WIP: Adds database field to delegate airflow to another room, adds select to room form.

.devcontainer/devcontainer.json

@@ -0,0 +1,40 @@
+{
+	"name": "swift-manual-d-dev",
+	"image": "git.housh.dev/michael/swift-dev-container:latest",
+	"features": {
+    "ghcr.io/devcontainers/features/git:1": {
+      "version": "os-provided",
+      "ppa": "false"
+    },
+		"ghcr.io/jsburckhardt/devcontainer-features/just:1": {},
+		"ghcr.io/rocker-org/devcontainer-features/pandoc:1": {},
+		//"ghcr.io/devcontainers/features/docker-in-docker:2": {},
+		"ghcr.io/wxw-matt/devcontainer-features/apt:latest": {
+			"packages": "weasyprint gnupg2 tmux"
+    },
+	  "ghcr.io/swift-server-community/swift-devcontainer-features/jemalloc:1": { },
+
+	},
+	"runArgs": [
+    "--cap-add=SYS_PTRACE",
+    "--security-opt",
+    "seccomp=unconfined"
+  ],
+	"remoteEnv": {
+		// Set TERM, prevents problems when "xterm-ghostty" get's passed from host,
+		// which causes weird typing and display problems.
+		"TERM": "xterm-256color",
+		// Less backtrace error warnings from swift.
+		"SWIFT_BACKTRACE": "enable=no"
+	},
+  "remoteUser": "swift",
+	"forwardPorts": [8080],
+	"mounts": [
+		{
+			"type": "bind", 
+			"source": "${localEnv:HOME}/.local/share/nvim",
+			"target": "/home/swift/.local/share/nvim"
+		}
+	]
+}
+	

.gitea/workflows/ci.yaml

@@ -0,0 +1,31 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+      - dev
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  ubuntu:
+    name: Linux Tests
+    runs-on: ubuntu-22.04
+    steps:
+    - uses: actions/checkout@v4
+    - name: Setup QEMU
+      uses: docker/setup-qemu-action@v3
+    - name: Setup buildx
+      uses: docker/setup-buildx-action@v3 
+    - name: Build test image
+      uses: docker/build-push-action@v6
+      with:
+        context: .
+        file: docker/Dockerfile.test
+        push: false
+        load: true
+        tags: michael/ductcalc:test
+    - name: Run Tests
+      run: |
+        docker run --rm michael/ductcalc:test swift test

.gitignore

@@ -9,3 +9,9 @@ DerivedData/
 .swift-version
 node_modules/
 tailwindcss
+.envrc
+*.pdf
+.env
+.env*
+default.profraw
+rooms.csv

Package.resolved

@@ -1,5 +1,5 @@
 {
-  "originHash" : "5d6dad57209ac74e3c47d8e8eb162768b81c9e63e15df87d29019d46a13cfec2",
+  "originHash" : "b6e6af1076a5bcce49e1231c44be25d770eaef278e2d1ce1c961446d49cb2d00",
   "pins" : [
     {
       "identity" : "async-http-client",
@@ -73,6 +73,15 @@
         "version" : "1.53.0"
       }
     },
+    {
+      "identity" : "fluent-postgres-driver",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/vapor/fluent-postgres-driver.git",
+      "state" : {
+        "revision" : "59bff45a41d1ece1950bb8a6e0006d88c1fb6e69",
+        "version" : "2.12.0"
+      }
+    },
     {
       "identity" : "fluent-sqlite-driver",
       "kind" : "remoteSourceControl",
@@ -100,6 +109,24 @@
         "version" : "0.14.0"
       }
     },
+    {
+      "identity" : "postgres-kit",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/vapor/postgres-kit.git",
+      "state" : {
+        "revision" : "7c079553e9cda74811e627775bf22e40a9405ad9",
+        "version" : "2.15.1"
+      }
+    },
+    {
+      "identity" : "postgres-nio",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/vapor/postgres-nio.git",
+      "state" : {
+        "revision" : "d578b86fb2c8321b114d97cd70831d1a3e9531a6",
+        "version" : "1.30.1"
+      }
+    },
     {
       "identity" : "routing-kit",
       "kind" : "remoteSourceControl",
@@ -226,6 +253,15 @@
         "version" : "4.2.0"
       }
     },
+    {
+      "identity" : "swift-custom-dump",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/pointfreeco/swift-custom-dump",
+      "state" : {
+        "revision" : "93a8aa4937030b606de42f44b17870249f49af0b",
+        "version" : "1.3.4"
+      }
+    },
     {
       "identity" : "swift-dependencies",
       "kind" : "remoteSourceControl",
@@ -361,6 +397,15 @@
         "version" : "2.9.1"
       }
     },
+    {
+      "identity" : "swift-snapshot-testing",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/pointfreeco/swift-snapshot-testing",
+      "state" : {
+        "revision" : "a8b7c5e0ed33d8ab8887d1654d9b59f2cbad529b",
+        "version" : "1.18.7"
+      }
+    },
     {
       "identity" : "swift-syntax",
       "kind" : "remoteSourceControl",
@@ -379,6 +424,15 @@
         "version" : "1.6.3"
       }
     },
+    {
+      "identity" : "swift-tagged",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/pointfreeco/swift-tagged",
+      "state" : {
+        "revision" : "3907a9438f5b57d317001dc99f3f11b46882272b",
+        "version" : "0.10.0"
+      }
+    },
     {
       "identity" : "swift-url-routing",
       "kind" : "remoteSourceControl",
@@ -388,6 +442,15 @@
         "version" : "0.6.2"
       }
     },
+    {
+      "identity" : "swift-validations",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/m-housh/swift-validations.git",
+      "state" : {
+        "revision" : "95ea5d267e37f6cdb9f91c5c8a01e718b9299db6",
+        "version" : "0.3.4"
+      }
+    },
     {
       "identity" : "vapor",
       "kind" : "remoteSourceControl",

Package.swift

@@ -6,8 +6,14 @@ let package = Package(
   name: "swift-manual-d",
   products: [
     .executable(name: "App", targets: ["App"]),
-    .library(name: "ApiController", targets: ["ApiController"]),
+    .library(name: "AuthClient", targets: ["AuthClient"]),
+    .library(name: "CSVParser", targets: ["CSVParser"]),
     .library(name: "DatabaseClient", targets: ["DatabaseClient"]),
+    .library(name: "EnvVars", targets: ["EnvVars"]),
+    .library(name: "FileClient", targets: ["FileClient"]),
+    .library(name: "HTMLSnapshotTesting", targets: ["HTMLSnapshotTesting"]),
+    .library(name: "PdfClient", targets: ["PdfClient"]),
+    .library(name: "ProjectClient", targets: ["ProjectClient"]),
     .library(name: "ManualDCore", targets: ["ManualDCore"]),
     .library(name: "ManualDClient", targets: ["ManualDClient"]),
     .library(name: "Styleguide", targets: ["Styleguide"]),
@@ -17,25 +23,30 @@ let package = Package(
     .package(url: "https://github.com/vapor/vapor.git", from: "4.110.1"),
     .package(url: "https://github.com/vapor/fluent.git", from: "4.9.0"),
     .package(url: "https://github.com/vapor/fluent-sqlite-driver.git", from: "4.6.0"),
+    .package(url: "https://github.com/vapor/fluent-postgres-driver.git", from: "2.0.0"),
     .package(url: "https://github.com/apple/swift-nio.git", from: "2.65.0"),
     .package(url: "https://github.com/pointfreeco/swift-dependencies", from: "1.0.0"),
+    .package(url: "https://github.com/pointfreeco/swift-snapshot-testing", from: "1.12.0"),
+    .package(url: "https://github.com/pointfreeco/swift-tagged", from: "0.6.0"),
     .package(url: "https://github.com/pointfreeco/swift-url-routing.git", from: "0.6.2"),
     .package(url: "https://github.com/pointfreeco/vapor-routing.git", from: "0.1.3"),
     .package(url: "https://github.com/pointfreeco/swift-case-paths.git", from: "1.6.0"),
     .package(url: "https://github.com/elementary-swift/elementary.git", from: "0.6.0"),
     .package(url: "https://github.com/elementary-swift/elementary-htmx.git", from: "0.5.0"),
     .package(url: "https://github.com/vapor-community/vapor-elementary.git", from: "0.1.0"),
+    .package(url: "https://github.com/m-housh/swift-validations.git", from: "0.1.0"),
   ],
   targets: [
     .executableTarget(
       name: "App",
       dependencies: [
-        .target(name: "ApiController"),
+        .target(name: "AuthClient"),
         .target(name: "DatabaseClient"),
         .target(name: "ViewController"),
         .product(name: "Dependencies", package: "swift-dependencies"),
         .product(name: "Fluent", package: "fluent"),
         .product(name: "FluentSQLiteDriver", package: "fluent-sqlite-driver"),
+        .product(name: "FluentPostgresDriver", package: "fluent-postgres-driver"),
         .product(name: "Vapor", package: "vapor"),
         .product(name: "NIOCore", package: "swift-nio"),
         .product(name: "NIOPosix", package: "swift-nio"),
@@ -44,13 +55,26 @@ let package = Package(
       ]
     ),
     .target(
-      name: "ApiController",
+      name: "AuthClient",
       dependencies: [
         .target(name: "DatabaseClient"),
         .target(name: "ManualDCore"),
         .product(name: "Dependencies", package: "swift-dependencies"),
         .product(name: "DependenciesMacros", package: "swift-dependencies"),
-        .product(name: "Vapor", package: "vapor"),
+      ]
+    ),
+    .target(
+      name: "CSVParser",
+      dependencies: [
+        .target(name: "ManualDCore"),
+        .product(name: "Dependencies", package: "swift-dependencies"),
+        .product(name: "DependenciesMacros", package: "swift-dependencies"),
+      ]
+    ),
+    .testTarget(
+      name: "CSVParsingTests",
+      dependencies: [
+        .target(name: "CSVParser")
       ]
     ),
     .target(
@@ -61,29 +85,87 @@ let package = Package(
         .product(name: "DependenciesMacros", package: "swift-dependencies"),
         .product(name: "Fluent", package: "fluent"),
         .product(name: "Vapor", package: "vapor"),
+        .product(name: "Validations", package: "swift-validations"),
+      ]
+    ),
+    .testTarget(
+      name: "DatabaseClientTests",
+      dependencies: [
+        .target(name: "App"),
+        .target(name: "DatabaseClient"),
+        .product(name: "DependenciesTestSupport", package: "swift-dependencies"),
+        .product(name: "FluentSQLiteDriver", package: "fluent-sqlite-driver"),
+      ]
+    ),
+    .target(
+      name: "EnvVars",
+      dependencies: [
+        .product(name: "Dependencies", package: "swift-dependencies"),
+        .product(name: "DependenciesMacros", package: "swift-dependencies"),
+      ]
+    ),
+    .target(
+      name: "FileClient",
+      dependencies: [
+        .product(name: "Dependencies", package: "swift-dependencies"),
+        .product(name: "DependenciesMacros", package: "swift-dependencies"),
+        .product(name: "Vapor", package: "vapor"),
+      ]
+    ),
+    .target(
+      name: "HTMLSnapshotTesting",
+      dependencies: [
+        .product(name: "Elementary", package: "elementary"),
+        .product(name: "SnapshotTesting", package: "swift-snapshot-testing"),
+      ]
+    ),
+    .target(
+      name: "PdfClient",
+      dependencies: [
+        .target(name: "EnvVars"),
+        .target(name: "FileClient"),
+        .target(name: "ManualDCore"),
+        .product(name: "Dependencies", package: "swift-dependencies"),
+        .product(name: "DependenciesMacros", package: "swift-dependencies"),
+        .product(name: "Elementary", package: "elementary"),
+      ]
+    ),
+    .testTarget(
+      name: "PdfClientTests",
+      dependencies: [
+        .target(name: "HTMLSnapshotTesting"),
+        .target(name: "PdfClient"),
+        .product(name: "SnapshotTesting", package: "swift-snapshot-testing"),
+      ],
+      resources: [
+        .copy("__Snapshots__")
+      ]
+    ),
+    .target(
+      name: "ProjectClient",
+      dependencies: [
+        .target(name: "DatabaseClient"),
+        .target(name: "ManualDClient"),
+        .target(name: "PdfClient"),
+        .product(name: "Vapor", package: "vapor"),
       ]
     ),
     .target(
       name: "ManualDCore",
       dependencies: [
+        .product(name: "CasePaths", package: "swift-case-paths"),
         .product(name: "Dependencies", package: "swift-dependencies"),
         .product(name: "Fluent", package: "fluent"),
         .product(name: "URLRouting", package: "swift-url-routing"),
-        .product(name: "CasePaths", package: "swift-case-paths"),
-      ]
-    ),
-    .testTarget(
-      name: "ApiRouteTests",
-      dependencies: [
-        .target(name: "ManualDCore")
       ]
     ),
     .target(
       name: "ManualDClient",
       dependencies: [
-        "ManualDCore",
+        .target(name: "ManualDCore"),
         .product(name: "Dependencies", package: "swift-dependencies"),
         .product(name: "DependenciesMacros", package: "swift-dependencies"),
+        .product(name: "Tagged", package: "swift-tagged"),
       ]
     ),
     .target(
@@ -104,7 +186,11 @@ let package = Package(
     .target(
       name: "ViewController",
       dependencies: [
+        .target(name: "AuthClient"),
+        .target(name: "CSVParser"),
         .target(name: "DatabaseClient"),
+        .target(name: "PdfClient"),
+        .target(name: "ProjectClient"),
         .target(name: "ManualDClient"),
         .target(name: "ManualDCore"),
         .target(name: "Styleguide"),
@@ -115,5 +201,15 @@ let package = Package(
         .product(name: "Vapor", package: "vapor"),
       ]
     ),
+    .testTarget(
+      name: "ViewControllerTests",
+      dependencies: [
+        .target(name: "ViewController"),
+        .target(name: "HTMLSnapshotTesting"),
+      ],
+      resources: [
+        .copy("__Snapshots__")
+      ]
+    ),
   ]
 )

Public/css/htmx.css

@@ -0,0 +1,12 @@
+.htmx-indicator {
+	display: none;
+}
+
+.htmx-request .htmx-indicator {
+	display: inline;
+}
+
+.htmx-request.htmx-indicator {
+	display: inline;
+}
+

Public/css/main.css

@@ -2,4 +2,3 @@
 @plugin "daisyui" {
 	themes: all;
 }
-

Public/css/output.css

@@ -7,12 +7,7 @@
     'Noto Color Emoji';
     --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New',
     monospace;
-    --color-red-500: oklch(63.7% 0.237 25.331);
-    --color-red-600: oklch(57.7% 0.245 27.325);
     --color-green-400: oklch(79.2% 0.209 151.711);
-    --color-indigo-600: oklch(51.1% 0.262 276.966);
-    --color-slate-300: oklch(86.9% 0.022 252.894);
-    --color-slate-900: oklch(20.8% 0.042 265.755);
     --color-gray-200: oklch(92.8% 0.006 264.531);
     --color-gray-400: oklch(70.7% 0.022 261.325);
     --color-black: #000;
@@ -30,7 +25,6 @@
     --text-3xl--line-height: calc(2.25 / 1.875);
     --font-weight-bold: 700;
     --radius-sm: 0.25rem;
-    --radius-md: 0.375rem;
     --radius-lg: 0.5rem;
     --ease-out: cubic-bezier(0, 0, 0.2, 1);
     --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
@@ -6218,6 +6212,9 @@
   .hidden {
     display: none;
   }
+  .inline {
+    display: inline;
+  }
   .inline-block {
     display: inline-block;
   }
@@ -6982,9 +6979,6 @@
   .rounded-lg {
     border-radius: var(--radius-lg);
   }
-  .rounded-md {
-    border-radius: var(--radius-md);
-  }
   .rounded-selector {
     border-radius: var(--radius-selector);
   }
@@ -7449,15 +7443,9 @@
   .bg-error {
     background-color: var(--color-error);
   }
-  .bg-red-500 {
-    background-color: var(--color-red-500);
-  }
   .bg-secondary {
     background-color: var(--color-secondary);
   }
-  .bg-white {
-    background-color: var(--color-white);
-  }
   .divider-accent {
     @layer daisyui.l1.l2 {
       &:before, &:after {
@@ -7866,15 +7854,9 @@
       }
     }
   }
-  .px-3 {
-    padding-inline: calc(var(--spacing) * 3);
-  }
   .px-4 {
     padding-inline: calc(var(--spacing) * 4);
   }
-  .py-1\.5 {
-    padding-block: calc(var(--spacing) * 1.5);
-  }
   .py-2 {
     padding-block: calc(var(--spacing) * 2);
   }
@@ -8530,15 +8512,9 @@
   .text-info {
     color: var(--color-info);
   }
-  .text-slate-900 {
-    color: var(--color-slate-900);
-  }
   .text-success {
     color: var(--color-success);
   }
-  .text-white {
-    color: var(--color-white);
-  }
   .lowercase {
     text-transform: lowercase;
   }
@@ -8607,10 +8583,6 @@
     --tw-shadow: 0 25px 50px -12px var(--tw-shadow-color, rgb(0 0 0 / 0.25));
     box-shadow: var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow);
   }
-  .shadow-lg {
-    --tw-shadow: 0 10px 15px -3px var(--tw-shadow-color, rgb(0 0 0 / 0.1)), 0 4px 6px -4px var(--tw-shadow-color, rgb(0 0 0 / 0.1));
-    box-shadow: var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow);
-  }
   .shadow-sm {
     --tw-shadow: 0 1px 3px 0 var(--tw-shadow-color, rgb(0 0 0 / 0.1)), 0 1px 2px -1px var(--tw-shadow-color, rgb(0 0 0 / 0.1));
     box-shadow: var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow);
@@ -8619,13 +8591,6 @@
     outline-style: var(--tw-outline-style);
     outline-width: 1px;
   }
-  .outline-1 {
-    outline-style: var(--tw-outline-style);
-    outline-width: 1px;
-  }
-  .-outline-offset-1 {
-    outline-offset: calc(1px * -1);
-  }
   .btn-ghost {
     @layer daisyui.l1 {
       &:not(.btn-active, :hover, :active:focus, :focus-visible, input:checked:not(.filter .btn)) {
@@ -8650,9 +8615,6 @@
       }
     }
   }
-  .outline-slate-300 {
-    outline-color: var(--color-slate-300);
-  }
   .filter {
     filter: var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,);
   }
@@ -9406,16 +9368,6 @@
       }
     }
   }
-  .invalid\:border-red-500 {
-    &:invalid {
-      border-color: var(--color-red-500);
-    }
-  }
-  .out-of-range\:border-red-500 {
-    &:out-of-range {
-      border-color: var(--color-red-500);
-    }
-  }
   .hover\:bg-neutral {
     &:hover {
       @media (hover: hover) {
@@ -9423,13 +9375,6 @@
       }
     }
   }
-  .hover\:bg-red-600 {
-    &:hover {
-      @media (hover: hover) {
-        background-color: var(--color-red-600);
-      }
-    }
-  }
   .hover\:text-white {
     &:hover {
       @media (hover: hover) {
@@ -9437,22 +9382,6 @@
       }
     }
   }
-  .focus\:outline {
-    &:focus {
-      outline-style: var(--tw-outline-style);
-      outline-width: 1px;
-    }
-  }
-  .focus\:-outline-offset-2 {
-    &:focus {
-      outline-offset: calc(2px * -1);
-    }
-  }
-  .focus\:outline-indigo-600 {
-    &:focus {
-      outline-color: var(--color-indigo-600);
-    }
-  }
   .data-active\:bg-neutral {
     &[data-active] {
       background-color: var(--color-neutral);

Public/css/pdf.css

@@ -0,0 +1,109 @@
+@media print {
+  body {
+    -webkit-print-color-adjust: exact;
+    color-adjust: exact;
+    print-color-adjust: exact;
+  }
+  table td, table th {
+    -webkit-print-color-adjust: exact;
+  }
+}
+* {
+	font-size: 12px;
+}
+h1 { font-size: 24px; }
+h2 { font-size: 16px; }
+
+table {
+	border-collapse: collapse;
+  max-width: 100%;
+	margin: 10px auto;
+	border: none !important;
+	border-style: none;
+}
+th, td {
+  padding: 10px;
+	border: none;
+	border-style: none;
+}
+.table-bordered {
+  border: 1px solid #ccc;
+}
+.table-bordered th, td {
+  border: 1px solid #ccc;
+}
+.table-bordered tr:nth-child(even) {
+  background-color: #f2f2f2;
+}
+.w-full {
+  width: 100%;
+}
+.w-half {
+  width: 50%;
+}
+.table-footer {
+  background-color: #75af4c;
+  color: white;
+  font-weight: bold;
+}
+.bg-green { 
+  background-color: #4CAF50;
+  color: white;
+}
+.heating {
+  color: red;
+}
+.coolingTotal {
+  color: blue;
+}
+.coolingSensible {
+  color: cyan;
+}
+.justify-end {
+  text-align: end;
+}
+.flex { 
+  display: flex; 
+  flex-wrap: wrap;
+  justify-content: space-between;
+  gap: 10px;
+}
+.flex table {
+  width: 50%;
+  margin: 0;
+  flex: 1 1 calc(50% - 10px);
+}
+.container {
+  display: flex;
+  width: 100%;
+  gap: 10px;
+}
+.table-container {
+  flex: 1;
+  min-width: 0;
+}
+.table-container table {
+  width: 100%;
+  border-collapse: collapse;
+}
+.customerTable {
+  width: 50%;
+}
+.section {
+  padding: 10px;
+}
+.label {
+  font-weight: bold;
+}
+.error {
+  color: red;
+  font-weight: bold;
+}
+.effectiveLengthGroupTable, .effectiveLengthGroupHeader {
+  background-color: white;
+  color: black;
+  font-weight: bold;
+}
+.headline {
+  padding: 10px 0;
+}

Public/js/htmx-download.js

@@ -0,0 +1,63 @@
+// Copied from: https://github.com/dakixr/htmx-download/blob/main/htmx-download.js
+htmx.defineExtension('htmx-download', {
+    onEvent: function(name, evt) {
+
+        if (name === 'htmx:beforeRequest') {
+            // Set the responseType to 'arraybuffer' to handle binary data
+            evt.detail.xhr.responseType = 'arraybuffer';
+        }
+
+        if (name === 'htmx:beforeSwap') {
+            const xhr = evt.detail.xhr;
+
+            if (xhr.status === 200) {
+                // Parse headers
+                const headers = {};
+                const headerStr = xhr.getAllResponseHeaders();
+                const headerArr = headerStr.trim().split(/[\r\n]+/);
+                headerArr.forEach((line) => {
+                    const parts = line.split(": ");
+                    const header = parts.shift().toLowerCase();
+                    const value = parts.join(": ");
+                    headers[header] = value;
+                });
+
+                // Extract filename
+                let filename = 'downloaded_file.xlsx';
+                if (headers['content-disposition']) {
+                    const filenameMatch = headers['content-disposition'].match(/filename\*?=(?:UTF-8'')?"?([^;\n"]+)/i);
+                    if (filenameMatch && filenameMatch[1]) {
+                        filename = decodeURIComponent(filenameMatch[1].replace(/['"]/g, ''));
+                    }
+                }
+                
+                // Determine MIME type
+                const mimetype = headers['content-type'] || 'application/octet-stream';
+
+                // Create Blob
+                const blob = new Blob([xhr.response], { type: mimetype });
+                const url = URL.createObjectURL(blob);
+
+                // Trigger download
+                const link = document.createElement("a");
+                link.style.display = "none";
+                link.href = url;
+                link.download = filename;
+                document.body.appendChild(link);
+                link.click();
+
+                // Cleanup
+                setTimeout(() => {
+                    URL.revokeObjectURL(url);
+                    link.remove();
+                }, 100);
+
+            } else {
+                console.warn(`[htmx-download] Unexpected response status: ${xhr.status}`);
+            }
+
+            // Prevent htmx from swapping content
+            evt.detail.shouldSwap = false;
+        }
+    },
+});

Sources/ApiController/Interface.swift

@@ -1,38 +0,0 @@
-import Dependencies
-import DependenciesMacros
-import Logging
-import ManualDCore
-
-extension DependencyValues {
-  public var apiController: ApiController {
-    get { self[ApiController.self] }
-    set { self[ApiController.self] = newValue }
-  }
-}
-
-@DependencyClient
-public struct ApiController: Sendable {
-  public var json: @Sendable (Request) async throws -> (any Encodable)?
-}
-
-extension ApiController {
-  public struct Request: Sendable {
-    public let route: SiteRoute.Api
-    public let logger: Logger
-
-    public init(route: SiteRoute.Api, logger: Logger) {
-      self.route = route
-      self.logger = logger
-    }
-  }
-}
-
-extension ApiController: DependencyKey {
-  public static let testValue = Self()
-
-  public static let liveValue = Self(
-    json: { request in
-      try await request.route.respond(logger: request.logger)
-    }
-  )
-}

Sources/ApiController/Live.swift

@@ -1,127 +0,0 @@
-import DatabaseClient
-import Dependencies
-import Logging
-import ManualDCore
-
-extension SiteRoute.Api {
-  func respond(logger: Logger) async throws -> (any Encodable)? {
-    switch self {
-    case .project(let route):
-      return try await route.respond(logger: logger)
-    case .room(let route):
-      return try await route.respond(logger: logger)
-    case .equipment(let route):
-      return try await route.respond(logger: logger)
-    case .componentLoss(let route):
-      return try await route.respond(logger: logger)
-    }
-  }
-}
-
-extension SiteRoute.Api.ProjectRoute {
-
-  func respond(logger: Logger) async throws -> (any Encodable)? {
-    @Dependency(\.database) var database
-
-    switch self {
-    case .create(let request):
-      // return try await database.projects.create(request)
-      // FIX:
-      fatalError()
-    case .delete(let id):
-      try await database.projects.delete(id)
-      return nil
-    case .detail(let id, let route):
-      switch route {
-      case .completedSteps:
-        // FIX:
-        fatalError()
-
-      }
-    case .get(let id):
-      guard let project = try await database.projects.get(id) else {
-        logger.error("Project not found for id: \(id)")
-        throw ApiError("Project not found.")
-      }
-      return project
-    case .index:
-      // FIX: Fix to return projects.
-      return [Project]()
-    }
-  }
-}
-
-extension SiteRoute.Api.RoomRoute {
-
-  func respond(logger: Logger) async throws -> (any Encodable)? {
-    @Dependency(\.database) var database
-
-    switch self {
-    case .create(let request):
-      return try await database.rooms.create(request)
-    case .delete(let id):
-      try await database.rooms.delete(id)
-      return nil
-    case .get(let id):
-      guard let room = try await database.rooms.get(id) else {
-        logger.error("Room not found for id: \(id)")
-        throw ApiError("Room not found.")
-      }
-      return room
-    }
-  }
-}
-
-extension SiteRoute.Api.EquipmentRoute {
-
-  func respond(logger: Logger) async throws -> (any Encodable)? {
-    @Dependency(\.database) var database
-
-    switch self {
-    case .create(let request):
-      return try await database.equipment.create(request)
-    case .delete(let id):
-      try await database.equipment.delete(id)
-      return nil
-    case .fetch(let projectID):
-      return try await database.equipment.fetch(projectID)
-    case .get(let id):
-      guard let room = try await database.equipment.get(id) else {
-        logger.error("Equipment not found for id: \(id)")
-        throw ApiError("Equipment not found.")
-      }
-      return room
-    }
-  }
-}
-
-extension SiteRoute.Api.ComponentLossRoute {
-
-  func respond(logger: Logger) async throws -> (any Encodable)? {
-    @Dependency(\.database) var database
-
-    switch self {
-    case .create(let request):
-      return try await database.componentLoss.create(request)
-    case .delete(let id):
-      try await database.componentLoss.delete(id)
-      return nil
-    case .fetch(let projectID):
-      return try await database.componentLoss.fetch(projectID)
-    case .get(let id):
-      guard let room = try await database.componentLoss.get(id) else {
-        logger.error("Component loss not found for id: \(id)")
-        throw ApiError("Component loss not found.")
-      }
-      return room
-    }
-  }
-}
-
-public struct ApiError: Error {
-  let message: String
-
-  init(_ message: String) {
-    self.message = message
-  }
-}

Sources/App/Extensions/ApiController+respond.swift

@@ -1,37 +1,37 @@
-import ApiController
-import ManualDCore
-import Vapor
-
-extension ApiController {
-
-  func respond(_ route: SiteRoute.Api, request: Vapor.Request) async throws
-    -> any AsyncResponseEncodable
-  {
-    guard let encodable = try await json(.init(route: route, logger: request.logger)) else {
-      return HTTPStatus.ok
-    }
-    return AnyJSONResponse(value: encodable)
-  }
-}
-
-struct AnyJSONResponse: AsyncResponseEncodable {
-  public var headers: HTTPHeaders = ["Content-Type": "application/json"]
-  let value: any Encodable
-
-  init(additionalHeaders: HTTPHeaders = [:], value: any Encodable) {
-    if additionalHeaders.contains(name: .contentType) {
-      self.headers = additionalHeaders
-    } else {
-      headers.add(contentsOf: additionalHeaders)
-    }
-    self.value = value
-  }
-
-  func encodeResponse(for request: Request) async throws -> Response {
-    try Response(
-      status: .ok,
-      headers: headers,
-      body: .init(data: JSONEncoder().encode(value))
-    )
-  }
-}
+// import ApiController
+// import ManualDCore
+// import Vapor
+//
+// extension ApiController {
+//
+//   func respond(_ route: SiteRoute.Api, request: Vapor.Request) async throws
+//     -> any AsyncResponseEncodable
+//   {
+//     guard let encodable = try await json(.init(route: route, logger: request.logger)) else {
+//       return HTTPStatus.ok
+//     }
+//     return AnyJSONResponse(value: encodable)
+//   }
+// }
+//
+// struct AnyJSONResponse: AsyncResponseEncodable {
+//   public var headers: HTTPHeaders = ["Content-Type": "application/json"]
+//   let value: any Encodable
+//
+//   init(additionalHeaders: HTTPHeaders = [:], value: any Encodable) {
+//     if additionalHeaders.contains(name: .contentType) {
+//       self.headers = additionalHeaders
+//     } else {
+//       headers.add(contentsOf: additionalHeaders)
+//     }
+//     self.value = value
+//   }
+//
+//   func encodeResponse(for request: Request) async throws -> Response {
+//     try Response(
+//       status: .ok,
+//       headers: headers,
+//       body: .init(data: JSONEncoder().encode(value))
+//     )
+//   }
+// }

Sources/App/Extensions/ViewController+respond.swift

@@ -12,11 +12,7 @@ extension ViewController {
       .init(
         route: route,
         isHtmxRequest: request.isHtmxRequest,
-        logger: request.logger,
-        authenticateUser: { request.session.authenticate($0) },
-        currentUser: {
-          try request.auth.require(User.self)
-        }
+        logger: request.logger
       )
     )
     return AnyHTMLResponse(value: html)

Sources/App/Middleware/DependenciesMiddleware.swift

@@ -1,37 +1,47 @@
-import ApiController
+// import ApiController
+import AuthClient
 import DatabaseClient
 import Dependencies
+import EnvVars
+import ManualDCore
+import PdfClient
 import Vapor
 import ViewController
 
 // Taken from discussions page on `swift-dependencies`.
 
-// FIX: Use live view controller.
 struct DependenciesMiddleware: AsyncMiddleware {
 
   private let values: DependencyValues.Continuation
-  private let apiController: ApiController
+  // private let apiController: ApiController
   private let database: DatabaseClient
+  private let environment: EnvVars
   private let viewController: ViewController
 
   init(
     database: DatabaseClient,
-    apiController: ApiController = .liveValue,
+    environment: EnvVars,
+    // apiController: ApiController = .liveValue,
     viewController: ViewController = .liveValue
   ) {
     self.values = withEscapedDependencies { $0 }
-    self.apiController = apiController
+    // self.apiController = apiController
     self.database = database
+    self.environment = environment
     self.viewController = viewController
   }
 
   func respond(to request: Request, chainingTo next: any AsyncResponder) async throws -> Response {
     try await values.yield {
       try await withDependencies {
-        $0.apiController = apiController
+        // $0.apiController = apiController
+        $0.auth = .live(on: request)
         $0.database = database
+        $0.environment = environment
         // $0.dateFormatter = .liveValue
         $0.viewController = viewController
+        $0.pdfClient = .liveValue
+        $0.fileClient = .live(fileIO: request.fileio)
       } operation: {
         try await next.respond(to: request)
       }

Sources/App/Middleware/ViewRoute+middleware.swift

@@ -14,10 +14,10 @@ private let viewRouteMiddleware: [any Middleware] = [
 extension SiteRoute.View {
   var middleware: [any Middleware]? {
     switch self {
-    case .project, .user:
-      return viewRouteMiddleware
     case .login, .signup, .test:
       return nil
+    case .project, .user:
+      return viewRouteMiddleware
     }
   }
 }

Sources/App/configure.swift

@@ -1,10 +1,13 @@
 import DatabaseClient
 import Dependencies
 import Elementary
+import EnvVars
 import Fluent
+import FluentPostgresDriver
 import FluentSQLiteDriver
 import ManualDCore
 import NIOSSL
+import ProjectClient
 import Vapor
 import VaporElementary
 @preconcurrency import VaporRouting
@@ -13,12 +16,15 @@ import ViewController
 // configures your application
 public func configure(
   _ app: Application,
+  in environment: EnvVars,
   makeDatabaseClient: @escaping (any Database) -> DatabaseClient = { .live(database: $0) }
 ) async throws {
   // Setup the database client.
-  let databaseClient = try await setupDatabase(on: app, factory: makeDatabaseClient)
+  let databaseClient = try await setupDatabase(
+    on: app, environment: environment, factory: makeDatabaseClient
+  )
   // Add the global middlewares.
-  addMiddleware(to: app, database: databaseClient)
+  addMiddleware(to: app, database: databaseClient, environment: environment)
   #if DEBUG
     // Live reload of the application for development when launched with the `./swift-dev` command
     // app.lifecycle.use(BrowserSyncHandler())
@@ -32,7 +38,11 @@ public func configure(
   addCommands(to: app)
 }
 
-private func addMiddleware(to app: Application, database databaseClient: DatabaseClient) {
+private func addMiddleware(
+  to app: Application,
+  database databaseClient: DatabaseClient,
+  environment: EnvVars
+) {
   // cors middleware should come before default error middleware using `at: .beginning`
   let corsConfiguration = CORSMiddleware.Configuration(
     allowedOrigin: .all,
@@ -47,16 +57,20 @@ private func addMiddleware(to app: Application, database databaseClient: Databas
 
   app.middleware.use(FileMiddleware(publicDirectory: app.directory.publicDirectory))
   app.middleware.use(app.sessions.middleware)
-  app.middleware.use(DependenciesMiddleware(database: databaseClient))
+  app.middleware.use(DependenciesMiddleware(database: databaseClient, environment: environment))
 }
 
 private func setupDatabase(
   on app: Application,
+  environment: EnvVars,
   factory makeDatabaseClient: @escaping (any Database) -> DatabaseClient
 ) async throws -> DatabaseClient {
   switch app.environment {
-  case .production, .development:
-    let dbFileName = Environment.get("SQLITE_FILENAME") ?? "db.sqlite"
+  case .production:
+    let configuration = try environment.postgresConfiguration()
+    app.databases.use(.postgres(configuration: configuration), as: .psql)
+  case .development:
+    let dbFileName = environment.sqlitePath ?? "db.sqlite"
     app.databases.use(DatabaseConfigurationFactory.sqlite(.file(dbFileName)), as: .sqlite)
   default:
     app.databases.use(DatabaseConfigurationFactory.sqlite(.memory), as: .sqlite)
@@ -64,9 +78,7 @@ private func setupDatabase(
 
   let databaseClient = makeDatabaseClient(app.db)
 
-  if app.environment != .testing {
-    try await app.migrations.add(databaseClient.migrations.run())
-  }
+  try await app.migrations.add(databaseClient.migrations())
 
   return databaseClient
 }
@@ -101,8 +113,6 @@ extension SiteRoute {
 
   fileprivate func middleware() -> [any Middleware]? {
     switch self {
-    case .api:
-      return nil
     case .health:
       return nil
     case .view(let route):
@@ -111,20 +121,51 @@ extension SiteRoute {
   }
 }
 
+extension DuctSizes: Content {}
+
 @Sendable
 private func siteHandler(
   request: Request,
   route: SiteRoute
 ) async throws -> any AsyncResponseEncodable {
-  @Dependency(\.apiController) var apiController
   @Dependency(\.viewController) var viewController
+  @Dependency(\.projectClient) var projectClient
 
   switch route {
-  case .api(let route):
-    return try await apiController.respond(route, request: request)
   case .health:
     return HTTPStatus.ok
+  // Generating a pdf return's a `Response` instead of `HTML` like other views, so we
+  // need to handle it seperately.
+  case .view(.project(.detail(let projectID, .pdf))):
+    return try await projectClient.generatePdf(projectID)
   case .view(let route):
     return try await viewController.respond(route: route, request: request)
   }
 }
+
+extension EnvVars {
+  func postgresConfiguration() throws -> SQLPostgresConfiguration {
+    guard let hostname = postgresHostname,
+      let username = postgresUsername,
+      let password = postgresPassword,
+      let database = postgresDatabase
+    else {
+      throw EnvError("Missing environment variables for postgres connection.")
+    }
+    return .init(
+      hostname: hostname,
+      username: username,
+      password: password,
+      database: database,
+      tls: .disable
+    )
+  }
+}
+
+struct EnvError: Error {
+  let reason: String
+
+  init(_ reason: String) {
+    self.reason = reason
+  }
+}

Sources/App/entrypoint.swift

@@ -1,5 +1,6 @@
 import DatabaseClient
 import Dependencies
+import EnvVars
 import Logging
 import NIOCore
 import NIOPosix
@@ -17,11 +18,15 @@ enum Entrypoint {
     // You can enable it if you'd like to reduce the amount of context switching between NIO and Swift Concurrency.
     // Note: this has caused issues with some libraries that use `.wait()` and cleanly shutting down.
     // If enabled, you should be careful about calling async functions before this point as it can cause assertion failures.
-    // let executorTakeoverSuccess = NIOSingletons.unsafeTryInstallSingletonPosixEventLoopGroupAsConcurrencyGlobalExecutor()
-    // app.logger.debug("Tried to install SwiftNIO's EventLoopGroup as Swift's global concurrency executor", metadata: ["success": .stringConvertible(executorTakeoverSuccess)])
+    let executorTakeoverSuccess =
+      NIOSingletons.unsafeTryInstallSingletonPosixEventLoopGroupAsConcurrencyGlobalExecutor()
+    app.logger.debug(
+      "Tried to install SwiftNIO's EventLoopGroup as Swift's global concurrency executor",
+      metadata: ["success": .stringConvertible(executorTakeoverSuccess)]
+    )
 
     do {
-      try await configure(app)
+      try await configure(app, in: EnvVars.live())
     } catch {
       app.logger.report(error: error)
       try? await app.asyncShutdown()

Sources/AuthClient/Interface.swift

@@ -0,0 +1,57 @@
+import DatabaseClient
+import Dependencies
+import DependenciesMacros
+import ManualDCore
+import Vapor
+
+extension DependencyValues {
+  /// Authentication dependency, for handling authentication tasks.
+  public var auth: AuthClient {
+    get { self[AuthClient.self] }
+    set { self[AuthClient.self] = newValue }
+  }
+}
+
+/// Represents authentication tasks that are used in the application.
+@DependencyClient
+public struct AuthClient: Sendable {
+  /// Create a new user and log them in.
+  public var createAndLogin: @Sendable (User.Create) async throws -> User
+  /// Get the current user.
+  public var currentUser: @Sendable () throws -> User
+  /// Login a user.
+  public var login: @Sendable (User.Login) async throws -> User
+  /// Logout a user.
+  public var logout: @Sendable () throws -> Void
+}
+
+extension AuthClient: TestDependencyKey {
+  public static let testValue = Self()
+
+  public static func live(on request: Request) -> Self {
+    @Dependency(\.database) var database
+
+    return .init(
+      createAndLogin: { createForm in
+        let user = try await database.users.create(createForm)
+        _ = try await database.users.login(
+          .init(email: createForm.email, password: createForm.password)
+        )
+        request.auth.login(user)
+        request.logger.debug("LOGGED IN: \(user.id)")
+        return user
+      },
+      currentUser: {
+        try request.auth.require(User.self)
+      },
+      login: { loginForm in
+        let token = try await database.users.login(loginForm)
+        let user = try await database.users.get(token.userID)!
+        request.session.authenticate(user)
+        request.logger.debug("LOGGED IN: \(user.id)")
+        return user
+      },
+      logout: { request.auth.logout(User.self) }
+    )
+  }
+}

Sources/CSVParser/Interface.swift

@@ -0,0 +1,43 @@
+import Dependencies
+import DependenciesMacros
+import ManualDCore
+import Parsing
+
+extension DependencyValues {
+  public var csvParser: CSVParser {
+    get { self[CSVParser.self] }
+    set { self[CSVParser.self] = newValue }
+  }
+}
+
+@DependencyClient
+public struct CSVParser: Sendable {
+  public var parseRooms: @Sendable (Room.CSV) async throws -> [Room.Create]
+}
+
+extension CSVParser: DependencyKey {
+  public static let testValue = Self()
+
+  public static let liveValue = Self(
+    parseRooms: { csv in
+      guard let string = String(data: csv.file, encoding: .utf8) else {
+        throw CSVParsingError("Unreadable file data")
+      }
+      let rows = try RoomCSVParser().parse(string[...].utf8)
+      let rooms = rows.reduce(into: [Room.Create]()) {
+        if case .room(let room) = $1 {
+          $0.append(room)
+        }
+      }
+      return rooms
+    }
+  )
+}
+
+public struct CSVParsingError: Error {
+  let reason: String
+
+  public init(_ reason: String) {
+    self.reason = reason
+  }
+}

Sources/CSVParser/Internal/Room+parsing.swift

@@ -0,0 +1,59 @@
+import ManualDCore
+import Parsing
+
+struct RoomCSVParser: Parser {
+  var body: some Parser<Substring.UTF8View, [RoomRowType]> {
+    Many {
+      RoomRowParser()
+    } separator: {
+      "\n".utf8
+    }
+  }
+}
+
+struct RoomRowParser: Parser {
+
+  var body: some Parser<Substring.UTF8View, RoomRowType> {
+    OneOf {
+      RoomCreateParser().map { RoomRowType.room($0) }
+      Prefix { $0 != UInt8(ascii: "\n") }
+        .map(.string)
+        .map { RoomRowType.header($0) }
+    }
+  }
+}
+
+enum RoomRowType {
+  case header(String)
+  case room(Room.Create)
+}
+
+struct RoomCreateParser: ParserPrinter {
+
+  // FIX: The delegated to field won't work here, as we potentially have not created
+  //    the room yet, so we will need an intermediate representation for the csv data
+  //    that uses a room's name or disregard and require user to delegate airflow in
+  //    the ui.
+  var body: some ParserPrinter<Substring.UTF8View, Room.Create> {
+    ParsePrint {
+      Prefix { $0 != UInt8(ascii: ",") }.map(.string)
+      ",".utf8
+      Double.parser()
+      ",".utf8
+      Optionally {
+        Double.parser()
+      }
+      ",".utf8
+      Optionally {
+        Double.parser()
+      }
+      ",".utf8
+      Int.parser()
+      ",".utf8
+      Optionally {
+        Room.ID.parser()
+      }
+    }
+    .map(.memberwise(Room.Create.init))
+  }
+}

Sources/DatabaseClient/Interface.swift

@@ -4,23 +4,132 @@ import FluentKit
 import ManualDCore
 
 extension DependencyValues {
+  /// The database dependency.
   public var database: DatabaseClient {
     get { self[DatabaseClient.self] }
     set { self[DatabaseClient.self] = newValue }
   }
 }
 
+/// Represents the database interactions used by the application.
 @DependencyClient
 public struct DatabaseClient: Sendable {
+  /// Database migrations.
   public var migrations: Migrations
+  /// Interactions with the projects table.
   public var projects: Projects
+  /// Interactions with the rooms table.
   public var rooms: Rooms
+  /// Interactions with the equipment table.
   public var equipment: Equipment
-  public var componentLoss: ComponentLoss
-  public var effectiveLength: EffectiveLengthClient
+  /// Interactions with the component losses table.
+  public var componentLosses: ComponentLosses
+  /// Interactions with the equivalent lengths table.
+  public var equivalentLengths: EquivalentLengths
+  /// Interactions with the users table.
   public var users: Users
-  public var userProfile: UserProfile
+  /// Interactions with the user profiles table.
+  public var userProfiles: UserProfiles
+  /// Interactions with the trunk sizes table.
   public var trunkSizes: TrunkSizes
+
+  @DependencyClient
+  public struct ComponentLosses: Sendable {
+    public var create:
+      @Sendable (ComponentPressureLoss.Create) async throws -> ComponentPressureLoss
+    public var delete: @Sendable (ComponentPressureLoss.ID) async throws -> Void
+    public var fetch: @Sendable (Project.ID) async throws -> [ComponentPressureLoss]
+    public var get: @Sendable (ComponentPressureLoss.ID) async throws -> ComponentPressureLoss?
+    public var update:
+      @Sendable (ComponentPressureLoss.ID, ComponentPressureLoss.Update) async throws ->
+        ComponentPressureLoss
+  }
+
+  @DependencyClient
+  public struct EquivalentLengths: Sendable {
+    public var create: @Sendable (EquivalentLength.Create) async throws -> EquivalentLength
+    public var delete: @Sendable (EquivalentLength.ID) async throws -> Void
+    public var fetch: @Sendable (Project.ID) async throws -> [EquivalentLength]
+    public var fetchMax: @Sendable (Project.ID) async throws -> EquivalentLength.MaxContainer
+    public var get: @Sendable (EquivalentLength.ID) async throws -> EquivalentLength?
+    public var update:
+      @Sendable (EquivalentLength.ID, EquivalentLength.Update) async throws -> EquivalentLength
+  }
+
+  @DependencyClient
+  public struct Equipment: Sendable {
+    public var create: @Sendable (EquipmentInfo.Create) async throws -> EquipmentInfo
+    public var delete: @Sendable (EquipmentInfo.ID) async throws -> Void
+    public var fetch: @Sendable (Project.ID) async throws -> EquipmentInfo?
+    public var get: @Sendable (EquipmentInfo.ID) async throws -> EquipmentInfo?
+    public var update:
+      @Sendable (EquipmentInfo.ID, EquipmentInfo.Update) async throws -> EquipmentInfo
+  }
+
+  @DependencyClient
+  public struct Migrations: Sendable {
+    public var all: @Sendable () async throws -> [any AsyncMigration]
+
+    public func callAsFunction() async throws -> [any AsyncMigration] {
+      try await self.all()
+    }
+  }
+
+  @DependencyClient
+  public struct Projects: Sendable {
+    public var create: @Sendable (User.ID, Project.Create) async throws -> Project
+    public var delete: @Sendable (Project.ID) async throws -> Void
+    public var detail: @Sendable (Project.ID) async throws -> Project.Detail?
+    public var get: @Sendable (Project.ID) async throws -> Project?
+    public var getCompletedSteps: @Sendable (Project.ID) async throws -> Project.CompletedSteps
+    public var getSensibleHeatRatio: @Sendable (Project.ID) async throws -> Double?
+    public var fetch: @Sendable (User.ID, PageRequest) async throws -> Page<Project>
+    public var update: @Sendable (Project.ID, Project.Update) async throws -> Project
+  }
+
+  @DependencyClient
+  public struct Rooms: Sendable {
+    public var create: @Sendable (Project.ID, Room.Create) async throws -> Room
+    public var createMany: @Sendable (Project.ID, [Room.Create]) async throws -> [Room]
+    public var delete: @Sendable (Room.ID) async throws -> Void
+    public var deleteRectangularSize:
+      @Sendable (Room.ID, Room.RectangularSize.ID) async throws -> Room
+    public var get: @Sendable (Room.ID) async throws -> Room?
+    public var fetch: @Sendable (Project.ID) async throws -> [Room]
+    public var update: @Sendable (Room.ID, Room.Update) async throws -> Room
+    public var updateRectangularSize: @Sendable (Room.ID, Room.RectangularSize) async throws -> Room
+  }
+
+  @DependencyClient
+  public struct TrunkSizes: Sendable {
+    public var create: @Sendable (TrunkSize.Create) async throws -> TrunkSize
+    public var delete: @Sendable (TrunkSize.ID) async throws -> Void
+    public var fetch: @Sendable (Project.ID) async throws -> [TrunkSize]
+    public var get: @Sendable (TrunkSize.ID) async throws -> TrunkSize?
+    public var update:
+      @Sendable (TrunkSize.ID, TrunkSize.Update) async throws ->
+        TrunkSize
+  }
+
+  @DependencyClient
+  public struct UserProfiles: Sendable {
+    public var create: @Sendable (User.Profile.Create) async throws -> User.Profile
+    public var delete: @Sendable (User.Profile.ID) async throws -> Void
+    public var fetch: @Sendable (User.ID) async throws -> User.Profile?
+    public var get: @Sendable (User.Profile.ID) async throws -> User.Profile?
+    public var update: @Sendable (User.Profile.ID, User.Profile.Update) async throws -> User.Profile
+  }
+
+  @DependencyClient
+  public struct Users: Sendable {
+    public var create: @Sendable (User.Create) async throws -> User
+    public var delete: @Sendable (User.ID) async throws -> Void
+    public var get: @Sendable (User.ID) async throws -> User?
+    public var login: @Sendable (User.Login) async throws -> User.Token
+    public var logout: @Sendable (User.Token.ID) async throws -> Void
+    // public var token: @Sendable (User.ID) async throws -> User.Token
+  }
+
 }
 
 extension DatabaseClient: TestDependencyKey {
@@ -29,10 +138,10 @@ extension DatabaseClient: TestDependencyKey {
     projects: .testValue,
     rooms: .testValue,
     equipment: .testValue,
-    componentLoss: .testValue,
-    effectiveLength: .testValue,
+    componentLosses: .testValue,
+    equivalentLengths: .testValue,
     users: .testValue,
-    userProfile: .testValue,
+    userProfiles: .testValue,
     trunkSizes: .testValue
   )
 
@@ -42,40 +151,11 @@ extension DatabaseClient: TestDependencyKey {
       projects: .live(database: database),
       rooms: .live(database: database),
       equipment: .live(database: database),
-      componentLoss: .live(database: database),
-      effectiveLength: .live(database: database),
+      componentLosses: .live(database: database),
+      equivalentLengths: .live(database: database),
       users: .live(database: database),
-      userProfile: .live(database: database),
+      userProfiles: .live(database: database),
       trunkSizes: .live(database: database)
     )
   }
 }
-
-extension DatabaseClient {
-  @DependencyClient
-  public struct Migrations: Sendable {
-    public var run: @Sendable () async throws -> [any AsyncMigration]
-  }
-}
-
-extension DatabaseClient.Migrations: TestDependencyKey {
-  public static let testValue = Self()
-}
-
-extension DatabaseClient.Migrations: DependencyKey {
-  public static let liveValue = Self(
-    run: {
-      [
-        Project.Migrate(),
-        User.Migrate(),
-        User.Token.Migrate(),
-        User.Profile.Migrate(),
-        ComponentPressureLoss.Migrate(),
-        EquipmentInfo.Migrate(),
-        Room.Migrate(),
-        EffectiveLength.Migrate(),
-        DuctSizing.TrunkSize.Migrate(),
-      ]
-    }
-  )
-}

Sources/DatabaseClient/Internal/Array+validator.swift

@@ -0,0 +1,48 @@
+import Validations
+
+extension Validator {
+
+  static func validate<Child: Validatable>(
+    _ toChild: KeyPath<Value, [Child]>
+  )
+    -> Self
+  {
+    self.mapValue({ $0[keyPath: toChild] }, with: ArrayValidator())
+  }
+
+  static func validate<Child: Validatable>(
+    _ toChild: KeyPath<Value, [Child]?>
+  )
+    -> Self
+  {
+    self.mapValue({ $0[keyPath: toChild] }, with: ArrayValidator().optional())
+  }
+}
+
+extension Array where Element: Validatable {
+  static func validator() -> some Validation<Self> {
+    ArrayValidator<Element>()
+  }
+}
+
+struct ArrayValidator<Element>: Validation where Element: Validatable {
+  func validate(_ value: [Element]) throws {
+    for item in value {
+      try item.validate()
+    }
+  }
+}
+
+struct ForEachValidator<T, E>: Validation where T: Validation, T.Value == E {
+  let validator: T
+
+  init(@ValidationBuilder<E> builder: () -> T) {
+    self.validator = builder()
+  }
+
+  func validate(_ value: [E]) throws {
+    for item in value {
+      try validator.validate(item)
+    }
+  }
+}

Sources/DatabaseClient/Internal/ComponentLosses.swift

@@ -3,31 +3,19 @@ import DependenciesMacros
 import Fluent
 import Foundation
 import ManualDCore
+import SQLKit
+import Validations
 
-extension DatabaseClient {
-  @DependencyClient
-  public struct ComponentLoss: Sendable {
-    public var create:
-      @Sendable (ComponentPressureLoss.Create) async throws -> ComponentPressureLoss
-    public var delete: @Sendable (ComponentPressureLoss.ID) async throws -> Void
-    public var fetch: @Sendable (Project.ID) async throws -> [ComponentPressureLoss]
-    public var get: @Sendable (ComponentPressureLoss.ID) async throws -> ComponentPressureLoss?
-    public var update:
-      @Sendable (ComponentPressureLoss.ID, ComponentPressureLoss.Update) async throws ->
-        ComponentPressureLoss
-  }
-}
-
-extension DatabaseClient.ComponentLoss: TestDependencyKey {
+extension DatabaseClient.ComponentLosses: TestDependencyKey {
   public static let testValue = Self()
 }
 
-extension DatabaseClient.ComponentLoss {
+extension DatabaseClient.ComponentLosses {
   public static func live(database: any Database) -> Self {
     .init(
       create: { request in
-        let model = try request.toModel()
-        try await model.save(on: database)
+        let model = request.toModel()
+        try await model.validateAndSave(on: database)
         return try model.toDTO()
       },
       delete: { id in
@@ -48,13 +36,13 @@ extension DatabaseClient.ComponentLoss {
         try await ComponentLossModel.find(id, on: database).map { try $0.toDTO() }
       },
       update: { id, updates in
-        try updates.validate()
+        // try updates.validate()
         guard let model = try await ComponentLossModel.find(id, on: database) else {
           throw NotFoundError()
         }
         model.applyUpdates(updates)
         if model.hasChanges {
-          try await model.save(on: database)
+          try await model.validateAndSave(on: database)
         }
         return try model.toDTO()
       }
@@ -64,40 +52,9 @@ extension DatabaseClient.ComponentLoss {
 
 extension ComponentPressureLoss.Create {
 
-  func toModel() throws(ValidationError) -> ComponentLossModel {
-    try validate()
+  func toModel() -> ComponentLossModel {
     return .init(name: name, value: value, projectID: projectID)
   }
-
-  func validate() throws(ValidationError) {
-    guard !name.isEmpty else {
-      throw ValidationError("Component loss name should not be empty.")
-    }
-    guard value > 0 else {
-      throw ValidationError("Component loss value should be greater than 0.")
-    }
-    guard value < 1.0 else {
-      throw ValidationError("Component loss value should be less than 1.0.")
-    }
-  }
-}
-
-extension ComponentPressureLoss.Update {
-  func validate() throws(ValidationError) {
-    if let name {
-      guard !name.isEmpty else {
-        throw ValidationError("Component loss name should not be empty.")
-      }
-    }
-    if let value {
-      guard value > 0 else {
-        throw ValidationError("Component loss value should be greater than 0.")
-      }
-      guard value < 1.0 else {
-        throw ValidationError("Component loss value should be less than 1.0.")
-      }
-    }
-  }
 }
 
 extension ComponentPressureLoss {
@@ -184,3 +141,19 @@ final class ComponentLossModel: Model, @unchecked Sendable {
     }
   }
 }
+
+extension ComponentLossModel: Validatable {
+
+  var body: some Validation<ComponentLossModel> {
+    Validator.accumulating {
+      Validator.validate(\.name, with: .notEmpty())
+        .errorLabel("Name", inline: true)
+
+      Validator.validate(\.value) {
+        Double.greaterThan(0.0)
+        Double.lessThanOrEquals(1.0)
+      }
+      .errorLabel("Value", inline: true)
+    }
+  }
+}

Sources/DatabaseClient/Internal/Equipment.swift

@@ -3,29 +3,16 @@ import DependenciesMacros
 import Fluent
 import Foundation
 import ManualDCore
-
-extension DatabaseClient {
-  @DependencyClient
-  public struct Equipment: Sendable {
-    public var create: @Sendable (EquipmentInfo.Create) async throws -> EquipmentInfo
-    public var delete: @Sendable (EquipmentInfo.ID) async throws -> Void
-    public var fetch: @Sendable (Project.ID) async throws -> EquipmentInfo?
-    public var get: @Sendable (EquipmentInfo.ID) async throws -> EquipmentInfo?
-    public var update:
-      @Sendable (EquipmentInfo.ID, EquipmentInfo.Update) async throws -> EquipmentInfo
-  }
-}
+import Validations
 
 extension DatabaseClient.Equipment: TestDependencyKey {
   public static let testValue = Self()
-}
 
-extension DatabaseClient.Equipment {
   public static func live(database: any Database) -> Self {
     .init(
       create: { request in
-        let model = try request.toModel()
-        try await model.save(on: database)
+        let model = request.toModel()
+        try await model.validateAndSave(on: database)
         return try model.toDTO()
       },
       delete: { id in
@@ -51,10 +38,9 @@ extension DatabaseClient.Equipment {
         guard let model = try await EquipmentModel.find(id, on: database) else {
           throw NotFoundError()
         }
-        try updates.validate()
         model.applyUpdates(updates)
         if model.hasChanges {
-          try await model.save(on: database)
+          try await model.validateAndSave(on: database)
         }
         return try model.toDTO()
       }
@@ -64,8 +50,7 @@ extension DatabaseClient.Equipment {
 
 extension EquipmentInfo.Create {
 
-  func toModel() throws(ValidationError) -> EquipmentModel {
-    try validate()
+  func toModel() -> EquipmentModel {
     return .init(
       staticPressure: staticPressure,
       heatingCFM: heatingCFM,
@@ -74,44 +59,6 @@ extension EquipmentInfo.Create {
     )
   }
 
-  func validate() throws(ValidationError) {
-    guard staticPressure >= 0 else {
-      throw ValidationError("Equipment info static pressure should be greater than 0.")
-    }
-    guard staticPressure <= 1.0 else {
-      throw ValidationError("Equipment info static pressure should be less than 1.0.")
-    }
-    guard heatingCFM >= 0 else {
-      throw ValidationError("Equipment info heating CFM should be greater than 0.")
-    }
-    guard coolingCFM >= 0 else {
-      throw ValidationError("Equipment info heating CFM should be greater than 0.")
-    }
-  }
-}
-
-extension EquipmentInfo.Update {
-  var hasUpdates: Bool {
-    staticPressure != nil || heatingCFM != nil || coolingCFM != nil
-  }
-
-  func validate() throws(ValidationError) {
-    if let staticPressure {
-      guard staticPressure >= 0 else {
-        throw ValidationError("Equipment info static pressure should be greater than 0.")
-      }
-    }
-    if let heatingCFM {
-      guard heatingCFM >= 0 else {
-        throw ValidationError("Equipment info heating CFM should be greater than 0.")
-      }
-    }
-    if let coolingCFM {
-      guard coolingCFM >= 0 else {
-        throw ValidationError("Equipment info heating CFM should be greater than 0.")
-      }
-    }
-  }
 }
 
 extension EquipmentInfo {
@@ -211,3 +158,22 @@ final class EquipmentModel: Model, @unchecked Sendable {
     }
   }
 }
+
+extension EquipmentModel: Validatable {
+
+  var body: some Validation<EquipmentModel> {
+    Validator.accumulating {
+      Validator.validate(\.staticPressure) {
+        Double.greaterThan(0.0)
+        Double.lessThan(1.0)
+      }
+      .errorLabel("Static Pressure", inline: true)
+
+      Validator.validate(\.heatingCFM, with: .greaterThan(0))
+        .errorLabel("Heating CFM", inline: true)
+
+      Validator.validate(\.coolingCFM, with: .greaterThan(0))
+        .errorLabel("Cooling CFM", inline: true)
+    }
+  }
+}

Sources/DatabaseClient/Internal/EquivalentLengths.swift

@@ -3,28 +3,16 @@ import DependenciesMacros
 import Fluent
 import Foundation
 import ManualDCore
+import Validations
 
-extension DatabaseClient {
-  @DependencyClient
-  public struct EffectiveLengthClient: Sendable {
-    public var create: @Sendable (EffectiveLength.Create) async throws -> EffectiveLength
-    public var delete: @Sendable (EffectiveLength.ID) async throws -> Void
-    public var fetch: @Sendable (Project.ID) async throws -> [EffectiveLength]
-    public var fetchMax: @Sendable (Project.ID) async throws -> EffectiveLength.MaxContainer
-    public var get: @Sendable (EffectiveLength.ID) async throws -> EffectiveLength?
-    public var update:
-      @Sendable (EffectiveLength.ID, EffectiveLength.Update) async throws -> EffectiveLength
-  }
-}
-
-extension DatabaseClient.EffectiveLengthClient: TestDependencyKey {
+extension DatabaseClient.EquivalentLengths: TestDependencyKey {
   public static let testValue = Self()
 
   public static func live(database: any Database) -> Self {
     .init(
       create: { request in
         let model = try request.toModel()
-        try await model.save(on: database)
+        try await model.validateAndSave(on: database)
         return try model.toDTO()
       },
       delete: { id in
@@ -66,7 +54,7 @@ extension DatabaseClient.EffectiveLengthClient: TestDependencyKey {
         }
         try model.applyUpdates(updates)
         if model.hasChanges {
-          try await model.save(on: database)
+          try await model.validateAndSave(on: database)
         }
         return try model.toDTO()
       }
@@ -74,10 +62,12 @@ extension DatabaseClient.EffectiveLengthClient: TestDependencyKey {
   }
 }
 
-extension EffectiveLength.Create {
+extension EquivalentLength.Create {
 
   func toModel() throws -> EffectiveLengthModel {
-    try validate()
+    if groups.count > 0 {
+      try [EquivalentLength.FittingGroup].validator().validate(groups)
+    }
     return try .init(
       name: name,
       type: type.rawValue,
@@ -86,15 +76,9 @@ extension EffectiveLength.Create {
       projectID: projectID
     )
   }
-
-  func validate() throws(ValidationError) {
-    guard !name.isEmpty else {
-      throw ValidationError("Effective length name can not be empty.")
-    }
-  }
 }
 
-extension EffectiveLength {
+extension EquivalentLength {
 
   struct Migrate: AsyncMigration {
     let name = "CreateEffectiveLength"
@@ -173,20 +157,20 @@ final class EffectiveLengthModel: Model, @unchecked Sendable {
     $project.id = projectID
   }
 
-  func toDTO() throws -> EffectiveLength {
+  func toDTO() throws -> EquivalentLength {
     try .init(
       id: requireID(),
       projectID: $project.id,
       name: name,
       type: .init(rawValue: type)!,
       straightLengths: straightLengths,
-      groups: JSONDecoder().decode([EffectiveLength.Group].self, from: groups),
+      groups: JSONDecoder().decode([EquivalentLength.FittingGroup].self, from: groups),
       createdAt: createdAt!,
       updatedAt: updatedAt!
     )
   }
 
-  func applyUpdates(_ updates: EffectiveLength.Update) throws {
+  func applyUpdates(_ updates: EquivalentLength.Update) throws {
     if let name = updates.name, name != self.name {
       self.name = name
     }
@@ -197,7 +181,51 @@ final class EffectiveLengthModel: Model, @unchecked Sendable {
       self.straightLengths = straightLengths
     }
     if let groups = updates.groups {
+      if groups.count > 0 {
+        try [EquivalentLength.FittingGroup].validator().validate(groups)
+      }
       self.groups = try JSONEncoder().encode(groups)
     }
   }
 }
+
+extension EffectiveLengthModel: Validatable {
+
+  var body: some Validation<EffectiveLengthModel> {
+    Validator.accumulating {
+      Validator.validate(\.name, with: .notEmpty())
+        .errorLabel("Name", inline: true)
+
+      Validator.validate(
+        \.straightLengths,
+        with: [Int].empty().or(
+          ForEachValidator {
+            Int.greaterThan(0)
+          })
+      )
+      .errorLabel("Straight Lengths", inline: true)
+    }
+  }
+}
+
+extension EquivalentLength.FittingGroup: Validatable {
+
+  public var body: some Validation<Self> {
+    Validator.accumulating {
+      Validator.validate(\.group) {
+        Int.greaterThanOrEquals(1)
+        Int.lessThanOrEquals(12)
+      }
+      .errorLabel("Group", inline: true)
+
+      Validator.validate(\.letter, with: .regex(matching: "[a-zA-Z]"))
+        .errorLabel("Letter", inline: true)
+
+      Validator.validate(\.value, with: .greaterThan(0))
+        .errorLabel("Value", inline: true)
+
+      Validator.validate(\.quantity, with: .greaterThanOrEquals(1))
+        .errorLabel("Quantity", inline: true)
+    }
+  }
+}

Sources/DatabaseClient/Internal/Migrations.swift

@@ -0,0 +1,22 @@
+import Dependencies
+import ManualDCore
+
+extension DatabaseClient.Migrations: DependencyKey {
+  public static let testValue = Self()
+
+  public static let liveValue = Self(
+    all: {
+      [
+        Project.Migrate(),
+        User.Migrate(),
+        User.Token.Migrate(),
+        User.Profile.Migrate(),
+        ComponentPressureLoss.Migrate(),
+        EquipmentInfo.Migrate(),
+        Room.Migrate(),
+        EquivalentLength.Migrate(),
+        TrunkSize.Migrate(),
+      ]
+    }
+  )
+}

Sources/DatabaseClient/Internal/Model+validateAndSave.swift

@@ -0,0 +1,10 @@
+import Fluent
+import Validations
+
+extension Model where Self: Validations.Validatable {
+
+  func validateAndSave(on database: any Database) async throws {
+    try self.validate()
+    try await self.save(on: database)
+  }
+}

Sources/DatabaseClient/Internal/Projects.swift

@@ -3,19 +3,7 @@ import DependenciesMacros
 import Fluent
 import Foundation
 import ManualDCore
-
-extension DatabaseClient {
-  @DependencyClient
-  public struct Projects: Sendable {
-    public var create: @Sendable (User.ID, Project.Create) async throws -> Project
-    public var delete: @Sendable (Project.ID) async throws -> Void
-    public var get: @Sendable (Project.ID) async throws -> Project?
-    public var getCompletedSteps: @Sendable (Project.ID) async throws -> Project.CompletedSteps
-    public var getSensibleHeatRatio: @Sendable (Project.ID) async throws -> Double?
-    public var fetch: @Sendable (User.ID, PageRequest) async throws -> Page<Project>
-    public var update: @Sendable (Project.ID, Project.Update) async throws -> Project
-  }
-}
+import Validations
 
 extension DatabaseClient.Projects: TestDependencyKey {
   public static let testValue = Self()
@@ -23,8 +11,8 @@ extension DatabaseClient.Projects: TestDependencyKey {
   public static func live(database: any Database) -> Self {
     .init(
       create: { userID, request in
-        let model = try request.toModel(userID: userID)
-        try await model.save(on: database)
+        let model = request.toModel(userID: userID)
+        try await model.validateAndSave(on: database)
         return try model.toDTO()
       },
       delete: { id in
@@ -33,47 +21,51 @@ extension DatabaseClient.Projects: TestDependencyKey {
         }
         try await model.delete(on: database)
       },
+      detail: { id in
+        let model = try await ProjectModel.fetchDetail(for: id, on: database)
+
+        // TODO: Different error ??
+        guard let equipmentInfo = model.equipment else { return nil }
+
+        let trunks = try model.trunks.toDTO()
+
+        return try .init(
+          project: model.toDTO(),
+          componentLosses: model.componentLosses.map { try $0.toDTO() },
+          equipmentInfo: equipmentInfo.toDTO(),
+          equivalentLengths: model.equivalentLengths.map { try $0.toDTO() },
+          rooms: model.rooms.map { try $0.toDTO() },
+          trunks: trunks
+        )
+      },
       get: { id in
         try await ProjectModel.find(id, on: database).map { try $0.toDTO() }
       },
       getCompletedSteps: { id in
-        let roomsCount = try await RoomModel.query(on: database)
-          .with(\.$project)
-          .filter(\.$project.$id == id)
-          .count()
-
-        let equivalentLengths = try await EffectiveLengthModel.query(on: database)
-          .with(\.$project)
-          .filter(\.$project.$id == id)
-          .all()
-
+        let model = try await ProjectModel.fetchDetail(for: id, on: database)
         var equivalentLengthsCompleted = false
 
-        if equivalentLengths.filter({ $0.type == "supply" }).first != nil,
-          equivalentLengths.filter({ $0.type == "return" }).first != nil
+        if model.equivalentLengths.filter({ $0.type == "supply" }).first != nil,
+          model.equivalentLengths.filter({ $0.type == "return" }).first != nil
         {
           equivalentLengthsCompleted = true
         }
 
-        let componentLosses = try await ComponentLossModel.query(on: database)
-          .with(\.$project)
-          .filter(\.$project.$id == id)
-          .count()
-
-        let equipmentInfo = try await EquipmentModel.query(on: database)
-          .with(\.$project)
-          .filter(\.$project.$id == id)
-          .first()
-
         return .init(
-          equipmentInfo: equipmentInfo != nil,
-          rooms: roomsCount > 0,
+          equipmentInfo: model.equipment != nil,
+          rooms: model.rooms.count > 0,
           equivalentLength: equivalentLengthsCompleted,
-          frictionRate: componentLosses > 0
+          frictionRate: model.componentLosses.count > 0
         )
       },
       getSensibleHeatRatio: { id in
-        guard let model = try await ProjectModel.find(id, on: database) else {
+        guard
+          let model = try await ProjectModel.query(on: database)
+            .field(\.$id)
+            .field(\.$sensibleHeatRatio)
+            .filter(\.$id == id)
+            .first()
+        else {
           throw NotFoundError()
         }
         return model.sensibleHeatRatio
@@ -90,10 +82,9 @@ extension DatabaseClient.Projects: TestDependencyKey {
         guard let model = try await ProjectModel.find(id, on: database) else {
           throw NotFoundError()
         }
-        try updates.validate()
         model.applyUpdates(updates)
         if model.hasChanges {
-          try await model.save(on: database)
+          try await model.validateAndSave(on: database)
         }
         return try model.toDTO()
       }
@@ -103,8 +94,7 @@ extension DatabaseClient.Projects: TestDependencyKey {
 
 extension Project.Create {
 
-  func toModel(userID: User.ID) throws -> ProjectModel {
-    try validate()
+  func toModel(userID: User.ID) -> ProjectModel {
     return .init(
       name: name,
       streetAddress: streetAddress,
@@ -115,70 +105,6 @@ extension Project.Create {
     )
   }
 
-  func validate() throws(ValidationError) {
-    guard !name.isEmpty else {
-      throw ValidationError("Project name should not be empty.")
-    }
-    guard !streetAddress.isEmpty else {
-      throw ValidationError("Project street address should not be empty.")
-    }
-    guard !city.isEmpty else {
-      throw ValidationError("Project city should not be empty.")
-    }
-    guard !state.isEmpty else {
-      throw ValidationError("Project state should not be empty.")
-    }
-    guard !zipCode.isEmpty else {
-      throw ValidationError("Project zipCode should not be empty.")
-    }
-    if let sensibleHeatRatio {
-      guard sensibleHeatRatio >= 0 else {
-        throw ValidationError("Project sensible heat ratio should be greater than 0.")
-      }
-      guard sensibleHeatRatio <= 1 else {
-        throw ValidationError("Project sensible heat ratio should be less than 1.")
-      }
-    }
-  }
-}
-
-extension Project.Update {
-
-  func validate() throws(ValidationError) {
-    if let name {
-      guard !name.isEmpty else {
-        throw ValidationError("Project name should not be empty.")
-      }
-    }
-    if let streetAddress {
-      guard !streetAddress.isEmpty else {
-        throw ValidationError("Project street address should not be empty.")
-      }
-    }
-    if let city {
-      guard !city.isEmpty else {
-        throw ValidationError("Project city should not be empty.")
-      }
-    }
-    if let state {
-      guard !state.isEmpty else {
-        throw ValidationError("Project state should not be empty.")
-      }
-    }
-    if let zipCode {
-      guard !zipCode.isEmpty else {
-        throw ValidationError("Project zipCode should not be empty.")
-      }
-    }
-    if let sensibleHeatRatio {
-      guard sensibleHeatRatio >= 0 else {
-        throw ValidationError("Project sensible heat ratio should be greater than 0.")
-      }
-      guard sensibleHeatRatio <= 1 else {
-        throw ValidationError("Project sensible heat ratio should be less than 1.")
-      }
-    }
-  }
 }
 
 extension Project {
@@ -196,7 +122,7 @@ extension Project {
         .field("sensibleHeatRatio", .double)
         .field("createdAt", .datetime)
         .field("updatedAt", .datetime)
-        .field("userID", .uuid, .required, .references(UserModel.schema, "id"))
+        .field("userID", .uuid, .required, .references(UserModel.schema, "id", onDelete: .cascade))
         .unique(on: "userID", "name")
         .create()
     }
@@ -242,6 +168,18 @@ final class ProjectModel: Model, @unchecked Sendable {
   @Children(for: \.$project)
   var componentLosses: [ComponentLossModel]
 
+  @OptionalChild(for: \.$project)
+  var equipment: EquipmentModel?
+
+  @Children(for: \.$project)
+  var equivalentLengths: [EffectiveLengthModel]
+
+  @Children(for: \.$project)
+  var rooms: [RoomModel]
+
+  @Children(for: \.$project)
+  var trunks: [TrunkModel]
+
   @Parent(key: "userID")
   var user: UserModel
 
@@ -307,4 +245,67 @@ final class ProjectModel: Model, @unchecked Sendable {
       self.sensibleHeatRatio = sensibleHeatRatio
     }
   }
+
+  /// Returns a ``ProjectModel`` with all the relations eagerly loaded.
+  static func fetchDetail(
+    for projectID: Project.ID,
+    on database: any Database
+  ) async throws -> ProjectModel {
+    guard
+      let model =
+        try await ProjectModel.query(on: database)
+        .with(\.$componentLosses)
+        .with(\.$equipment)
+        .with(\.$equivalentLengths)
+        .with(\.$rooms)
+        .with(
+          \.$trunks,
+          { trunk in
+            trunk.with(
+              \.$rooms,
+              {
+                $0.with(\.$room)
+              }
+            )
+          }
+        )
+        .filter(\.$id == projectID)
+        .first()
+    else {
+      throw NotFoundError()
+    }
+    return model
+  }
+}
+
+extension ProjectModel: Validatable {
+
+  var body: some Validation<ProjectModel> {
+    Validator.accumulating {
+      Validator.validate(\.name, with: .notEmpty())
+        .errorLabel("Name", inline: true)
+
+      Validator.validate(\.streetAddress, with: .notEmpty())
+        .errorLabel("Address", inline: true)
+
+      Validator.validate(\.city, with: .notEmpty())
+        .errorLabel("City", inline: true)
+
+      Validator.validate(\.state, with: .notEmpty())
+        .errorLabel("State", inline: true)
+
+      Validator.validate(\.zipCode, with: .notEmpty())
+        .errorLabel("Zip", inline: true)
+
+      Validator.validate(\.sensibleHeatRatio) {
+        Validator {
+          Double.greaterThan(0)
+          Double.lessThanOrEquals(1.0)
+        }
+        .optional()
+      }
+      .errorLabel("Sensible Heat Ratio", inline: true)
+
+    }
+  }
 }

Sources/DatabaseClient/Internal/Rooms.swift

@@ -3,32 +3,25 @@ import DependenciesMacros
 import Fluent
 import Foundation
 import ManualDCore
-
-extension DatabaseClient {
-  @DependencyClient
-  public struct Rooms: Sendable {
-    public var create: @Sendable (Room.Create) async throws -> Room
-    public var delete: @Sendable (Room.ID) async throws -> Void
-    public var deleteRectangularSize:
-      @Sendable (Room.ID, DuctSizing.RectangularDuct.ID) async throws -> Room
-    public var get: @Sendable (Room.ID) async throws -> Room?
-    public var fetch: @Sendable (Project.ID) async throws -> [Room]
-    public var update: @Sendable (Room.ID, Room.Update) async throws -> Room
-    public var updateRectangularSize:
-      @Sendable (Room.ID, DuctSizing.RectangularDuct) async throws -> Room
-  }
-}
+import Validations
 
 extension DatabaseClient.Rooms: TestDependencyKey {
   public static let testValue = Self()
 
   public static func live(database: any Database) -> Self {
     .init(
-      create: { request in
-        let model = try request.toModel()
-        try await model.save(on: database)
+      create: { projectID, request in
+        let model = try request.toModel(projectID: projectID)
+        try await model.validateAndSave(on: database)
         return try model.toDTO()
       },
+      createMany: { projectID, rooms in
+        try await rooms.asyncMap { request in
+          let model = try request.toModel(projectID: projectID)
+          try await model.validateAndSave(on: database)
+          return try model.toDTO()
+        }
+      },
       delete: { id in
         guard let model = try await RoomModel.find(id, on: database) else {
           throw NotFoundError()
@@ -42,8 +35,11 @@ extension DatabaseClient.Rooms: TestDependencyKey {
         model.rectangularSizes?.removeAll {
           $0.id == rectangularDuctID
         }
+        if model.rectangularSizes?.count == 0 {
+          model.rectangularSizes = nil
+        }
         if model.hasChanges {
-          try await model.save(on: database)
+          try await model.validateAndSave(on: database)
         }
         return try model.toDTO()
       },
@@ -62,11 +58,9 @@ extension DatabaseClient.Rooms: TestDependencyKey {
         guard let model = try await RoomModel.find(id, on: database) else {
           throw NotFoundError()
         }
-
-        try updates.validate()
         model.applyUpdates(updates)
         if model.hasChanges {
-          try await model.save(on: database)
+          try await model.validateAndSave(on: database)
         }
         return try model.toDTO()
       },
@@ -89,68 +83,16 @@ extension DatabaseClient.Rooms: TestDependencyKey {
 
 extension Room.Create {
 
-  func toModel() throws(ValidationError) -> RoomModel {
-    try validate()
+  func toModel(projectID: Project.ID) throws -> RoomModel {
     return .init(
       name: name,
       heatingLoad: heatingLoad,
-      coolingTotal: coolingTotal,
-      coolingSensible: coolingSensible,
+      coolingLoad: coolingLoad,
       registerCount: registerCount,
+      delegetedToID: delegatedTo,
       projectID: projectID
     )
   }
-
-  func validate() throws(ValidationError) {
-    guard !name.isEmpty else {
-      throw ValidationError("Room name should not be empty.")
-    }
-    guard heatingLoad >= 0 else {
-      throw ValidationError("Room heating load should not be less than 0.")
-    }
-    guard coolingTotal >= 0 else {
-      throw ValidationError("Room cooling total should not be less than 0.")
-    }
-    if let coolingSensible {
-      guard coolingSensible >= 0 else {
-        throw ValidationError("Room cooling sensible should not be less than 0.")
-      }
-    }
-    guard registerCount >= 1 else {
-      throw ValidationError("Room cooling sensible should not be less than 1.")
-    }
-  }
-}
-
-extension Room.Update {
-
-  func validate() throws(ValidationError) {
-    if let name {
-      guard !name.isEmpty else {
-        throw ValidationError("Room name should not be empty.")
-      }
-    }
-    if let heatingLoad {
-      guard heatingLoad >= 0 else {
-        throw ValidationError("Room heating load should not be less than 0.")
-      }
-    }
-    if let coolingTotal {
-      guard coolingTotal >= 0 else {
-        throw ValidationError("Room cooling total should not be less than 0.")
-      }
-    }
-    if let coolingSensible {
-      guard coolingSensible >= 0 else {
-        throw ValidationError("Room cooling sensible should not be less than 0.")
-      }
-    }
-    if let registerCount {
-      guard registerCount >= 1 else {
-        throw ValidationError("Room cooling sensible should not be less than 1.")
-      }
-    }
-  }
 }
 
 extension Room {
@@ -162,9 +104,9 @@ extension Room {
         .id()
         .field("name", .string, .required)
         .field("heatingLoad", .double, .required)
-        .field("coolingTotal", .double, .required)
-        .field("coolingSensible", .double)
+        .field("coolingLoad", .dictionary, .required)
         .field("registerCount", .int8, .required)
+        .field("delegatedToID", .uuid, .references(RoomModel.schema, "id"))
         .field("rectangularSizes", .array)
         .field("createdAt", .datetime)
         .field("updatedAt", .datetime)
@@ -181,7 +123,7 @@ extension Room {
   }
 }
 
-final class RoomModel: Model, @unchecked Sendable {
+final class RoomModel: Model, @unchecked Sendable, Validatable {
 
   static let schema = "room"
 
@@ -194,17 +136,17 @@ final class RoomModel: Model, @unchecked Sendable {
   @Field(key: "heatingLoad")
   var heatingLoad: Double
 
-  @Field(key: "coolingTotal")
-  var coolingTotal: Double
-
-  @Field(key: "coolingSensible")
-  var coolingSensible: Double?
+  @Field(key: "coolingLoad")
+  var coolingLoad: Room.CoolingLoad
 
   @Field(key: "registerCount")
   var registerCount: Int
 
+  @OptionalParent(key: "delegatedToID")
+  var room: RoomModel?
+
   @Field(key: "rectangularSizes")
-  var rectangularSizes: [DuctSizing.RectangularDuct]?
+  var rectangularSizes: [Room.RectangularSize]?
 
   @Timestamp(key: "createdAt", on: .create, format: .iso8601)
   var createdAt: Date?
@@ -221,10 +163,10 @@ final class RoomModel: Model, @unchecked Sendable {
     id: UUID? = nil,
     name: String,
     heatingLoad: Double,
-    coolingTotal: Double,
-    coolingSensible: Double? = nil,
+    coolingLoad: Room.CoolingLoad,
     registerCount: Int,
-    rectangularSizes: [DuctSizing.RectangularDuct]? = nil,
+    delegetedToID: UUID? = nil,
+    rectangularSizes: [Room.RectangularSize]? = nil,
     createdAt: Date? = nil,
     updatedAt: Date? = nil,
     projectID: Project.ID
@@ -232,9 +174,9 @@ final class RoomModel: Model, @unchecked Sendable {
     self.id = id
     self.name = name
     self.heatingLoad = heatingLoad
-    self.coolingTotal = coolingTotal
-    self.coolingSensible = coolingSensible
+    self.coolingLoad = coolingLoad
     self.registerCount = registerCount
+    $room.id = delegetedToID
     self.rectangularSizes = rectangularSizes
     self.createdAt = createdAt
     self.updatedAt = updatedAt
@@ -247,9 +189,9 @@ final class RoomModel: Model, @unchecked Sendable {
       projectID: $project.id,
       name: name,
       heatingLoad: heatingLoad,
-      coolingTotal: coolingTotal,
-      coolingSensible: coolingSensible,
+      coolingLoad: coolingLoad,
       registerCount: registerCount,
+      delegatedTo: $room.id,
       rectangularSizes: rectangularSizes,
       createdAt: createdAt!,
       updatedAt: updatedAt!
@@ -264,11 +206,8 @@ final class RoomModel: Model, @unchecked Sendable {
     if let heatingLoad = updates.heatingLoad, heatingLoad != self.heatingLoad {
       self.heatingLoad = heatingLoad
     }
-    if let coolingTotal = updates.coolingTotal, coolingTotal != self.coolingTotal {
-      self.coolingTotal = coolingTotal
-    }
-    if let coolingSensible = updates.coolingSensible, coolingSensible != self.coolingSensible {
-      self.coolingSensible = coolingSensible
+    if let coolingLoad = updates.coolingLoad, coolingLoad != self.coolingLoad {
+      self.coolingLoad = coolingLoad
     }
     if let registerCount = updates.registerCount, registerCount != self.registerCount {
       self.registerCount = registerCount
@@ -279,4 +218,54 @@ final class RoomModel: Model, @unchecked Sendable {
 
   }
 
+  var body: some Validation<RoomModel> {
+    Validator.accumulating {
+      Validator.validate(\.name, with: .notEmpty())
+        .errorLabel("Name", inline: true)
+
+      Validator.validate(\.heatingLoad, with: .greaterThanOrEquals(0))
+        .errorLabel("Heating Load", inline: true)
+
+      Validator.validate(\.coolingLoad)
+        .errorLabel("Cooling Load", inline: true)
+
+      Validator.validate(\.registerCount, with: .greaterThanOrEquals(1))
+        .errorLabel("Register Count", inline: true)
+
+      Validator.validate(\.rectangularSizes)
+
+    }
+  }
+}
+
+extension Room.CoolingLoad: Validatable {
+
+  public var body: some Validation<Self> {
+    Validator.accumulating {
+      // Ensure that at least one of the values is not nil.
+      Validator.oneOf {
+        Validator.validate(\.total, with: .notNil())
+          .errorLabel("Total or Sensible", inline: true)
+        Validator.validate(\.sensible, with: .notNil())
+          .errorLabel("Total or Sensible", inline: true)
+      }
+
+      Validator.validate(\.total, with: Double.greaterThan(0).optional())
+      Validator.validate(\.sensible, with: Double.greaterThan(0).optional())
+    }
+  }
+
+}
+
+extension Room.RectangularSize: Validatable {
+
+  public var body: some Validation<Self> {
+    Validator.accumulating {
+      Validator.validate(\.register, with: Int.greaterThanOrEquals(1).optional())
+        .errorLabel("Register", inline: true)
+
+      Validator.validate(\.height, with: Int.greaterThanOrEquals(1))
+        .errorLabel("Height", inline: true)
+    }
+  }
 }

Sources/DatabaseClient/Internal/Sequence+asyncMap.swift

@@ -0,0 +1,41 @@
+import Foundation
+
+extension Sequence {
+
+  // Taken from: https://forums.swift.org/t/are-there-any-kind-of-asyncmap-method-for-a-normal-sequence/77354/7
+  func asyncMap<Result: Sendable>(
+    _ transform: @escaping @Sendable (Element) async throws -> Result
+  ) async rethrows -> [Result] where Element: Sendable {
+    try await withThrowingTaskGroup(of: (Int, Result).self) { group in
+
+      var i = 0
+      var iterator = self.makeIterator()
+      var results = [Result?]()
+      results.reserveCapacity(underestimatedCount)
+
+      func submitTask() throws {
+        try Task.checkCancellation()
+        if let element = iterator.next() {
+          results.append(nil)
+          group.addTask { [i] in try await (i, transform(element)) }
+          i += 1
+        }
+
+      }
+
+      // Add initial tasks
+      for _ in 0..<ProcessInfo.processInfo.processorCount {
+        try submitTask()
+      }
+
+      // Submit more tasks as results complete
+      while let (index, result) = try await group.next() {
+        results[index] = result
+        try submitTask()
+      }
+
+      return results.compactMap { $0 }
+
+    }
+  }
+}

Sources/DatabaseClient/Internal/TrunkSizes.swift

@@ -3,19 +3,7 @@ import DependenciesMacros
 import Fluent
 import Foundation
 import ManualDCore
-
-extension DatabaseClient {
-  @DependencyClient
-  public struct TrunkSizes: Sendable {
-    public var create: @Sendable (DuctSizing.TrunkSize.Create) async throws -> DuctSizing.TrunkSize
-    public var delete: @Sendable (DuctSizing.TrunkSize.ID) async throws -> Void
-    public var fetch: @Sendable (Project.ID) async throws -> [DuctSizing.TrunkSize]
-    public var get: @Sendable (DuctSizing.TrunkSize.ID) async throws -> DuctSizing.TrunkSize?
-    public var update:
-      @Sendable (DuctSizing.TrunkSize.ID, DuctSizing.TrunkSize.Update) async throws ->
-        DuctSizing.TrunkSize
-  }
-}
+import Validations
 
 extension DatabaseClient.TrunkSizes: TestDependencyKey {
   public static let testValue = Self()
@@ -23,12 +11,12 @@ extension DatabaseClient.TrunkSizes: TestDependencyKey {
   public static func live(database: any Database) -> Self {
     .init(
       create: { request in
-        try request.validate()
+        // try request.validate()
 
         let trunk = request.toModel()
-        var roomProxies = [DuctSizing.TrunkSize.RoomProxy]()
+        var roomProxies = [TrunkSize.RoomProxy]()
 
-        try await trunk.save(on: database)
+        try await trunk.validateAndSave(on: database)
 
         for (roomID, registers) in request.rooms {
           guard let room = try await RoomModel.find(roomID, on: database) else {
@@ -40,15 +28,19 @@ extension DatabaseClient.TrunkSizes: TestDependencyKey {
             registers: registers,
             type: request.type
           )
-          try await model.save(on: database)
-          try await roomProxies.append(model.toDTO(on: database))
+          try await model.validateAndSave(on: database)
+          roomProxies.append(
+            .init(room: try room.toDTO(), registers: registers)
+          )
         }
 
         return try .init(
           id: trunk.requireID(),
           projectID: trunk.$project.id,
           type: .init(rawValue: trunk.type)!,
-          rooms: roomProxies
+          rooms: roomProxies,
+          height: trunk.height,
+          name: trunk.name
         )
       },
       delete: { id in
@@ -60,48 +52,44 @@ extension DatabaseClient.TrunkSizes: TestDependencyKey {
       fetch: { projectID in
         try await TrunkModel.query(on: database)
           .with(\.$project)
-          .with(\.$rooms)
+          .with(\.$rooms, { $0.with(\.$room) })
           .filter(\.$project.$id == projectID)
           .all()
-          .toDTO(on: database)
+          .toDTO()
       },
       get: { id in
-        guard let model = try await TrunkModel.find(id, on: database) else {
+        guard
+          let model =
+            try await TrunkModel
+            .query(on: database)
+            .with(\.$rooms, { $0.with(\.$room) })
+            .filter(\.$id == id)
+            .first()
+        else {
           return nil
         }
-        return try await model.toDTO(on: database)
+        return try model.toDTO()
       },
       update: { id, updates in
         guard
           let model =
             try await TrunkModel
             .query(on: database)
-            .with(\.$rooms)
+            .with(\.$rooms, { $0.with(\.$room) })
             .filter(\.$id == id)
             .first()
         else {
           throw NotFoundError()
         }
-        try updates.validate()
+        // try updates.validate()
         try await model.applyUpdates(updates, on: database)
-        return try await model.toDTO(on: database)
+        return try model.toDTO()
       }
     )
   }
 }
 
-extension DuctSizing.TrunkSize.Create {
-
-  func validate() throws(ValidationError) {
-    guard rooms.count > 0 else {
-      throw ValidationError("Trunk size should have associated rooms / registers.")
-    }
-    if let height {
-      guard height > 0 else {
-        throw ValidationError("Trunk size height should be greater than 0.")
-      }
-    }
-  }
+extension TrunkSize.Create {
 
   func toModel() -> TrunkModel {
     .init(
@@ -113,22 +101,7 @@ extension DuctSizing.TrunkSize.Create {
   }
 }
 
-extension DuctSizing.TrunkSize.Update {
-  func validate() throws(ValidationError) {
-    if let rooms {
-      guard rooms.count > 0 else {
-        throw ValidationError("Trunk size should have associated rooms / registers.")
-      }
-    }
-    if let height {
-      guard height > 0 else {
-        throw ValidationError("Trunk size height should be greater than 0.")
-      }
-    }
-  }
-}
-
-extension DuctSizing.TrunkSize {
+extension TrunkSize {
 
   struct Migrate: AsyncMigration {
     let name = "CreateTrunkSize"
@@ -192,7 +165,7 @@ final class TrunkRoomModel: Model, @unchecked Sendable {
     trunkID: TrunkModel.IDValue,
     roomID: RoomModel.IDValue,
     registers: [Int],
-    type: DuctSizing.TrunkSize.TrunkType
+    type: TrunkSize.TrunkType
   ) {
     self.id = id
     $trunk.id = trunkID
@@ -201,16 +174,23 @@ final class TrunkRoomModel: Model, @unchecked Sendable {
     self.type = type.rawValue
   }
 
-  func toDTO(on database: any Database) async throws -> DuctSizing.TrunkSize.RoomProxy {
-    guard let room = try await RoomModel.find($room.id, on: database) else {
-      throw NotFoundError()
-    }
+  func toDTO() throws -> TrunkSize.RoomProxy {
     return .init(
       room: try room.toDTO(),
       registers: registers
     )
   }
+}
 
+extension TrunkRoomModel: Validatable {
+  var body: some Validation<TrunkRoomModel> {
+    Validator.validate(\.registers) {
+      [Int].notEmpty()
+      ForEachValidator {
+        Int.greaterThanOrEquals(1)
+      }
+    }
+  }
 }
 
 final class TrunkModel: Model, @unchecked Sendable {
@@ -240,7 +220,7 @@ final class TrunkModel: Model, @unchecked Sendable {
   init(
     id: UUID? = nil,
     projectID: Project.ID,
-    type: DuctSizing.TrunkSize.TrunkType,
+    type: TrunkSize.TrunkType,
     height: Int? = nil,
     name: String? = nil
   ) {
@@ -251,18 +231,9 @@ final class TrunkModel: Model, @unchecked Sendable {
     self.name = name
   }
 
-  func toDTO(on database: any Database) async throws -> DuctSizing.TrunkSize {
-    let rooms = try await withThrowingTaskGroup(of: DuctSizing.TrunkSize.RoomProxy.self) { group in
-      for room in self.rooms {
-        group.addTask {
-          try await room.toDTO(on: database)
-        }
-      }
-
-      return try await group.reduce(into: [DuctSizing.TrunkSize.RoomProxy]()) {
-        $0.append($1)
-      }
-
+  func toDTO() throws -> TrunkSize {
+    let rooms = try rooms.reduce(into: [TrunkSize.RoomProxy]()) {
+      $0.append(try $1.toDTO())
     }
 
     return try .init(
@@ -277,7 +248,7 @@ final class TrunkModel: Model, @unchecked Sendable {
   }
 
   func applyUpdates(
-    _ updates: DuctSizing.TrunkSize.Update,
+    _ updates: TrunkSize.Update,
     on database: any Database
   ) async throws {
     if let type = updates.type, type.rawValue != self.type {
@@ -290,7 +261,7 @@ final class TrunkModel: Model, @unchecked Sendable {
       self.name = name
     }
     if hasChanges {
-      try await self.save(on: database)
+      try await self.validateAndSave(on: database)
     }
 
     guard let updateRooms = updates.rooms else {
@@ -311,7 +282,7 @@ final class TrunkModel: Model, @unchecked Sendable {
           currRoom.registers = registers
         }
         if currRoom.hasChanges {
-          try await currRoom.save(on: database)
+          try await currRoom.validateAndSave(on: database)
         }
       } else {
         database.logger.debug("CREATING NEW TrunkRoomModel")
@@ -338,19 +309,27 @@ final class TrunkModel: Model, @unchecked Sendable {
   }
 }
 
-extension Array where Element == TrunkModel {
+extension TrunkModel: Validatable {
 
-  func toDTO(on database: any Database) async throws -> [DuctSizing.TrunkSize] {
-    try await withThrowingTaskGroup(of: DuctSizing.TrunkSize.self) { group in
-      for model in self {
-        group.addTask {
-          try await model.toDTO(on: database)
-        }
-      }
+  var body: some Validation<TrunkModel> {
+    Validator.accumulating {
+
+      Validator.validate(\.height, with: Int.greaterThan(0).optional())
+        .errorLabel("Height", inline: true)
+
+      Validator.validate(\.name, with: String.notEmpty().optional())
+        .errorLabel("Name", inline: true)
 
-      return try await group.reduce(into: [DuctSizing.TrunkSize]()) {
-        $0.append($1)
-      }
+    }
+  }
+}
+
+extension Array where Element == TrunkModel {
+
+  func toDTO() throws -> [TrunkSize] {
+
+    return try reduce(into: [TrunkSize]()) {
+      $0.append(try $1.toDTO())
     }
   }
 }

Sources/DatabaseClient/Internal/User+validation.swift

@@ -0,0 +1,20 @@
+import ManualDCore
+import Validations
+
+// Declaring this in seperate file because some Vapor imports
+// have same name's and this was easiest solution.
+extension User.Create: Validatable {
+  public var body: some Validation<Self> {
+    Validator.accumulating {
+      Validator.validate(\.email, with: .email())
+        .errorLabel("Email", inline: true)
+
+      Validator.validate(\.password.count, with: .greaterThanOrEquals(8))
+        .errorLabel("Password Count", inline: true)
+
+      Validator.validate(\.confirmPassword, with: .equals(password))
+        .mapError(ValidationError("Confirm password does not match."))
+        .errorLabel("Confirm Password", inline: true)
+    }
+  }
+}

Sources/DatabaseClient/Internal/UserProfiles.swift

@@ -1,30 +1,19 @@
 import Dependencies
 import DependenciesMacros
 import Fluent
+import Foundation
 import ManualDCore
-import Vapor
+import Validations
 
-extension DatabaseClient {
-  @DependencyClient
-  public struct UserProfile: Sendable {
-    public var create: @Sendable (User.Profile.Create) async throws -> User.Profile
-    public var delete: @Sendable (User.Profile.ID) async throws -> Void
-    public var fetch: @Sendable (User.ID) async throws -> User.Profile?
-    public var get: @Sendable (User.Profile.ID) async throws -> User.Profile?
-    public var update: @Sendable (User.Profile.ID, User.Profile.Update) async throws -> User.Profile
-  }
-}
-
-extension DatabaseClient.UserProfile: TestDependencyKey {
+extension DatabaseClient.UserProfiles: TestDependencyKey {
 
   public static let testValue = Self()
 
   public static func live(database: any Database) -> Self {
     .init(
       create: { profile in
-        try profile.validate()
         let model = profile.toModel()
-        try await model.save(on: database)
+        try await model.validateAndSave(on: database)
         return try model.toDTO()
       },
       delete: { id in
@@ -48,10 +37,9 @@ extension DatabaseClient.UserProfile: TestDependencyKey {
         guard let model = try await UserProfileModel.find(id, on: database) else {
           throw NotFoundError()
         }
-        try updates.validate()
         model.applyUpdates(updates)
         if model.hasChanges {
-          try await model.save(on: database)
+          try await model.validateAndSave(on: database)
         }
         return try model.toDTO()
       }
@@ -61,30 +49,6 @@ extension DatabaseClient.UserProfile: TestDependencyKey {
 
 extension User.Profile.Create {
 
-  func validate() throws(ValidationError) {
-    guard !firstName.isEmpty else {
-      throw ValidationError("User first name should not be empty.")
-    }
-    guard !lastName.isEmpty else {
-      throw ValidationError("User last name should not be empty.")
-    }
-    guard !companyName.isEmpty else {
-      throw ValidationError("User company name should not be empty.")
-    }
-    guard !streetAddress.isEmpty else {
-      throw ValidationError("User street address should not be empty.")
-    }
-    guard !city.isEmpty else {
-      throw ValidationError("User city should not be empty.")
-    }
-    guard !state.isEmpty else {
-      throw ValidationError("User state should not be empty.")
-    }
-    guard !zipCode.isEmpty else {
-      throw ValidationError("User zip code should not be empty.")
-    }
-  }
-
   func toModel() -> UserProfileModel {
     .init(
       userID: userID,
@@ -100,47 +64,6 @@ extension User.Profile.Create {
   }
 }
 
-extension User.Profile.Update {
-
-  func validate() throws(ValidationError) {
-    if let firstName {
-      guard !firstName.isEmpty else {
-        throw ValidationError("User first name should not be empty.")
-      }
-    }
-    if let lastName {
-      guard !lastName.isEmpty else {
-        throw ValidationError("User last name should not be empty.")
-      }
-    }
-    if let companyName {
-      guard !companyName.isEmpty else {
-        throw ValidationError("User company name should not be empty.")
-      }
-    }
-    if let streetAddress {
-      guard !streetAddress.isEmpty else {
-        throw ValidationError("User street address should not be empty.")
-      }
-    }
-    if let city {
-      guard !city.isEmpty else {
-        throw ValidationError("User city should not be empty.")
-      }
-    }
-    if let state {
-      guard !state.isEmpty else {
-        throw ValidationError("User state should not be empty.")
-      }
-    }
-    if let zipCode {
-      guard !zipCode.isEmpty else {
-        throw ValidationError("User zip code should not be empty.")
-      }
-    }
-  }
-}
-
 extension User.Profile {
 
   struct Migrate: AsyncMigration {
@@ -281,3 +204,31 @@ final class UserProfileModel: Model, @unchecked Sendable {
   }
 
 }
+
+extension UserProfileModel: Validatable {
+
+  var body: some Validation<UserProfileModel> {
+    Validator.accumulating {
+      Validator.validate(\.firstName, with: .notEmpty())
+        .errorLabel("First Name", inline: true)
+
+      Validator.validate(\.lastName, with: .notEmpty())
+        .errorLabel("Last Name", inline: true)
+
+      Validator.validate(\.companyName, with: .notEmpty())
+        .errorLabel("Company", inline: true)
+
+      Validator.validate(\.streetAddress, with: .notEmpty())
+        .errorLabel("Address", inline: true)
+
+      Validator.validate(\.city, with: .notEmpty())
+        .errorLabel("City", inline: true)
+
+      Validator.validate(\.state, with: .notEmpty())
+        .errorLabel("State", inline: true)
+
+      Validator.validate(\.zipCode, with: .notEmpty())
+        .errorLabel("Zip", inline: true)
+    }
+  }
+}

Sources/DatabaseClient/Internal/Users.swift

@@ -1,28 +1,17 @@
 import Dependencies
 import DependenciesMacros
 import Fluent
+import Foundation
 import ManualDCore
 import Vapor
 
-extension DatabaseClient {
-  @DependencyClient
-  public struct Users: Sendable {
-    public var create: @Sendable (User.Create) async throws -> User
-    public var delete: @Sendable (User.ID) async throws -> Void
-    public var get: @Sendable (User.ID) async throws -> User?
-    public var login: @Sendable (User.Login) async throws -> User.Token
-    public var logout: @Sendable (User.Token.ID) async throws -> Void
-    // public var token: @Sendable (User.ID) async throws -> User.Token
-  }
-
-}
-
 extension DatabaseClient.Users: TestDependencyKey {
   public static let testValue = Self()
 
   public static func live(database: any Database) -> Self {
     .init(
       create: { request in
+        try request.validate()
         let model = try request.toModel()
         try await model.save(on: database)
         return try model.toDTO()
@@ -46,6 +35,11 @@ extension DatabaseClient.Users: TestDependencyKey {
           throw NotFoundError()
         }
 
+        // Verify the password matches the user's hashed password.
+        guard try user.verifyPassword(request.password) else {
+          throw Abort(.unauthorized)
+        }
+
         let token: User.Token
 
         // Check if there's a user token
@@ -126,21 +120,8 @@ extension User {
 extension User.Create {
 
   func toModel() throws -> UserModel {
-    try validate()
     return try .init(email: email, passwordHash: User.hashPassword(password))
   }
-
-  func validate() throws {
-    guard !email.isEmpty else {
-      throw ValidationError("Email should not be empty")
-    }
-    guard password.count > 8 else {
-      throw ValidationError("Password should be more than 8 characters long.")
-    }
-    guard password == confirmPassword else {
-      throw ValidationError("Passwords do not match.")
-    }
-  }
 }
 
 final class UserModel: Model, @unchecked Sendable {

Sources/DatabaseClient/RectangularDuct.swift

@@ -1,175 +0,0 @@
-// import Dependencies
-// import DependenciesMacros
-// import Fluent
-// import Foundation
-// import ManualDCore
-//
-// extension DatabaseClient {
-//   @DependencyClient
-//   public struct RectangularDuct: Sendable {
-//     public var create:
-//       @Sendable (DuctSizing.RectangularDuct.Create) async throws -> DuctSizing.RectangularDuct
-//     public var delete: @Sendable (DuctSizing.RectangularDuct.ID) async throws -> Void
-//     public var fetch: @Sendable (Room.ID) async throws -> [DuctSizing.RectangularDuct]
-//     public var get:
-//       @Sendable (DuctSizing.RectangularDuct.ID) async throws -> DuctSizing.RectangularDuct?
-//     public var update:
-//       @Sendable (DuctSizing.RectangularDuct.ID, DuctSizing.RectangularDuct.Update) async throws ->
-//         DuctSizing.RectangularDuct
-//   }
-// }
-//
-// extension DatabaseClient.RectangularDuct: TestDependencyKey {
-//   public static let testValue = Self()
-//
-//   public static func live(database: any Database) -> Self {
-//     .init(
-//       create: { request in
-//         try request.validate()
-//         let model = request.toModel()
-//         try await model.save(on: database)
-//         return try model.toDTO()
-//       },
-//       delete: { id in
-//         guard let model = try await RectangularDuctModel.find(id, on: database) else {
-//           throw NotFoundError()
-//         }
-//         try await model.delete(on: database)
-//       },
-//       fetch: { roomID in
-//         try await RectangularDuctModel.query(on: database)
-//           .with(\.$room)
-//           .filter(\.$room.$id == roomID)
-//           .all()
-//           .map { try $0.toDTO() }
-//       },
-//       get: { id in
-//         try await RectangularDuctModel.find(id, on: database)
-//           .map { try $0.toDTO() }
-//       },
-//       update: { id, updates in
-//         guard let model = try await RectangularDuctModel.find(id, on: database) else {
-//           throw NotFoundError()
-//         }
-//         try updates.validate()
-//         model.applyUpdates(updates)
-//         if model.hasChanges {
-//           try await model.save(on: database)
-//         }
-//         return try model.toDTO()
-//       }
-//     )
-//   }
-// }
-//
-// extension DuctSizing.RectangularDuct.Create {
-//
-//   func validate() throws(ValidationError) {
-//     guard height > 0 else {
-//       throw ValidationError("Rectangular duct size height should be greater than 0.")
-//     }
-//     if let register {
-//       guard register > 0 else {
-//         throw ValidationError("Rectangular duct size register should be greater than 0.")
-//       }
-//     }
-//   }
-//
-//   func toModel() -> RectangularDuctModel {
-//     .init(roomID: roomID, height: height)
-//   }
-// }
-//
-// extension DuctSizing.RectangularDuct.Update {
-//
-//   func validate() throws(ValidationError) {
-//     if let height {
-//       guard height > 0 else {
-//         throw ValidationError("Rectangular duct size height should be greater than 0.")
-//       }
-//     }
-//     if let register {
-//       guard register > 0 else {
-//         throw ValidationError("Rectangular duct size register should be greater than 0.")
-//       }
-//     }
-//   }
-// }
-//
-// extension DuctSizing.RectangularDuct {
-//   struct Migrate: AsyncMigration {
-//     let name = "CreateRectangularDuct"
-//
-//     func prepare(on database: any Database) async throws {
-//       try await database.schema(RectangularDuctModel.schema)
-//         .id()
-//         .field("register", .int8)
-//         .field("height", .int8, .required)
-//         .field("roomID", .uuid, .required, .references(RoomModel.schema, "id", onDelete: .cascade))
-//         .field("createdAt", .datetime)
-//         .field("updatedAt", .datetime)
-//         .create()
-//     }
-//
-//     func revert(on database: any Database) async throws {
-//       try await database.schema(RectangularDuctModel.schema).delete()
-//     }
-//   }
-// }
-//
-// final class RectangularDuctModel: Model, @unchecked Sendable {
-//
-//   static let schema = "rectangularDuct"
-//
-//   @ID(key: .id)
-//   var id: UUID?
-//
-//   @Parent(key: "roomID")
-//   var room: RoomModel
-//
-//   @Field(key: "height")
-//   var height: Int
-//
-//   @Field(key: "register")
-//   var register: Int?
-//
-//   @Timestamp(key: "createdAt", on: .create, format: .iso8601)
-//   var createdAt: Date?
-//
-//   @Timestamp(key: "updatedAt", on: .update, format: .iso8601)
-//   var updatedAt: Date?
-//
-//   init() {}
-//
-//   init(
-//     id: UUID? = nil,
-//     roomID: Room.ID,
-//     register: Int? = nil,
-//     height: Int
-//   ) {
-//     self.id = id
-//     $room.id = roomID
-//     self.register = register
-//     self.height = height
-//   }
-//
-//   func toDTO() throws -> DuctSizing.RectangularDuct {
-//     return try .init(
-//       id: requireID(),
-//       roomID: $room.id,
-//       register: register,
-//       height: height,
-//       createdAt: createdAt!,
-//       updatedAt: updatedAt!
-//     )
-//   }
-//
-//   func applyUpdates(_ updates: DuctSizing.RectangularDuct.Update) {
-//     if let height = updates.height, height != self.height {
-//       self.height = height
-//     }
-//     if let register = updates.register, register != self.register {
-//       self.register = register
-//     }
-//   }
-// }

Sources/EnvVars/Interface.swift

@@ -0,0 +1,100 @@
+import Dependencies
+import DependenciesMacros
+import Foundation
+
+extension DependencyValues {
+
+  /// Holds values defined in the process environment that are needed.
+  ///
+  /// These are generally loaded from a `.env` file, but also have default values,
+  /// if not found.
+  public var environment: EnvVars {
+    get { self[EnvVars.self] }
+    set { self[EnvVars.self] = newValue }
+  }
+}
+
+/// Holds values defined in the process environment that are needed.
+///
+/// These are generally loaded from a `.env` file, but also have default values,
+/// if not found.
+public struct EnvVars: Codable, Equatable, Sendable {
+
+  /// The path to the pandoc executable on the system, used to generate pdf's.
+  public let pandocPath: String
+
+  /// The pdf engine to use with pandoc when creating pdf's.
+  public let pdfEngine: String
+
+  /// The postgres hostname, used for production database connection.
+  public let postgresHostname: String?
+
+  /// The postgres username, used for production database connection.
+  public let postgresUsername: String?
+
+  /// The postgres password, used for production database connection.
+  public let postgresPassword: String?
+
+  /// The postgres database, used for production database connection.
+  public let postgresDatabase: String?
+
+  /// The path to the sqlite database, used for development database connection.
+  public let sqlitePath: String?
+
+  public init(
+    pandocPath: String = "/usr/bin/pandoc",
+    pdfEngine: String = "weasyprint",
+    postgresHostname: String? = "localhost",
+    postgresUsername: String? = "vapor",
+    postgresPassword: String? = "super-secret",
+    postgresDatabase: String? = "vapor",
+    sqlitePath: String? = "db.sqlite"
+  ) {
+    self.pandocPath = pandocPath
+    self.pdfEngine = pdfEngine
+    self.postgresHostname = postgresHostname
+    self.postgresUsername = postgresUsername
+    self.postgresPassword = postgresPassword
+    self.postgresDatabase = postgresDatabase
+    self.sqlitePath = sqlitePath
+  }
+
+  enum CodingKeys: String, CodingKey {
+    case pandocPath = "PANDOC_PATH"
+    case pdfEngine = "PDF_ENGINE"
+    case postgresHostname = "POSTGRES_HOSTNAME"
+    case postgresUsername = "POSTGRES_USERNAME"
+    case postgresPassword = "POSTGRES_PASSWORD"
+    case postgresDatabase = "POSTGRES_DATABASE"
+    case sqlitePath = "SQLITE_PATH"
+  }
+
+  public static func live(_ env: [String: String] = ProcessInfo.processInfo.environment) -> Self {
+
+    // Convert default values into a dictionary.
+    let defaults =
+      (try? encoder.encode(EnvVars()))
+      .flatMap { try? decoder.decode([String: String].self, from: $0) }
+      ?? [:]
+
+    // Merge the default values with values found in process environment.
+    let assigned = defaults.merging(env, uniquingKeysWith: { $1 })
+
+    return (try? JSONSerialization.data(withJSONObject: assigned))
+      .flatMap { try? decoder.decode(EnvVars.self, from: $0) }
+      ?? .init()
+  }
+
+}
+
+extension EnvVars: TestDependencyKey {
+  public static let testValue = Self()
+}
+
+private let encoder: JSONEncoder = {
+  JSONEncoder()
+}()
+
+private let decoder: JSONDecoder = {
+  JSONDecoder()
+}()

Sources/FileClient/Interface.swift

@@ -0,0 +1,59 @@
+import Dependencies
+import DependenciesMacros
+import Foundation
+import Vapor
+
+extension DependencyValues {
+  /// Dependency used for file operations.
+  public var fileClient: FileClient {
+    get { self[FileClient.self] }
+    set { self[FileClient.self] = newValue }
+  }
+}
+
+@DependencyClient
+public struct FileClient: Sendable {
+  public typealias OnCompleteHandler = @Sendable () async throws -> Void
+
+  /// Write contents to a file.
+  ///
+  /// > Warning: This will overwrite a file if it exists.
+  public var writeFile: @Sendable (_ contents: String, _ path: String) async throws -> Void
+  /// Remove a file.
+  public var removeFile: @Sendable (_ path: String) async throws -> Void
+  /// Stream a file.
+  public var streamFile:
+    @Sendable (_ path: String, @escaping OnCompleteHandler) async throws -> Response
+
+  /// Stream a file at the given path.
+  ///
+  /// - Paramters:
+  ///   - path: The path to the file to stream.
+  ///   - onComplete: Completion handler to run when done streaming the file.
+  public func streamFile(
+    at path: String,
+    onComplete: @escaping OnCompleteHandler = {}
+  ) async throws -> Response {
+    try await streamFile(path, onComplete)
+  }
+}
+
+extension FileClient: TestDependencyKey {
+  public static let testValue = Self()
+
+  public static func live(fileIO: FileIO) -> Self {
+    .init(
+      writeFile: { contents, path in
+        try await fileIO.writeFile(ByteBuffer(string: contents), at: path)
+      },
+      removeFile: { path in
+        try FileManager.default.removeItem(atPath: path)
+      },
+      streamFile: { path, onComplete in
+        try await fileIO.asyncStreamFile(at: path) { _ in
+          try await onComplete()
+        }
+      }
+    )
+  }
+}

Sources/HTMLSnapshotTesting/Snapshotting.swift

@@ -0,0 +1,22 @@
+import Elementary
+import SnapshotTesting
+
+extension Snapshotting where Value == (any HTML), Format == String {
+  public static var html: Snapshotting {
+    var snapshotting = SimplySnapshotting.lines
+      .pullback { (html: any HTML) in html.renderFormatted() }
+
+    snapshotting.pathExtension = "html"
+    return snapshotting
+  }
+}
+
+// extension Snapshotting where Value == String, Format == String {
+//   public static var html: Snapshotting {
+//     var snapshotting = SimplySnapshotting.lines
+//       .pullback { $0 }
+//
+//     snapshotting.pathExtension = "html"
+//     return snapshotting
+//   }
+// }

Sources/ManualDClient/Helpers.swift

@@ -3,18 +3,17 @@ import ManualDCore
 
 extension Room {
 
-  var heatingLoadPerRegister: Double {
-
+  public var heatingLoadPerRegister: Double {
     heatingLoad / Double(registerCount)
   }
 
-  func coolingSensiblePerRegister(projectSHR: Double) -> Double {
-    let sensible = coolingSensible ?? (coolingTotal * projectSHR)
+  public func coolingSensiblePerRegister(projectSHR: Double) throws -> Double {
+    let sensible = try coolingLoad.ensured(shr: projectSHR).sensible
     return sensible / Double(registerCount)
   }
 }
 
-extension DuctSizing.TrunkSize.RoomProxy {
+extension TrunkSize.RoomProxy {
 
   // We need to make sure if registers got removed after a trunk
   // was already made / saved that we do not include registers that
@@ -30,26 +29,22 @@ extension DuctSizing.TrunkSize.RoomProxy {
     room.heatingLoadPerRegister * Double(actualRegisterCount)
   }
 
-  func totalCoolingSensible(projectSHR: Double) -> Double {
-    room.coolingSensiblePerRegister(projectSHR: projectSHR) * Double(actualRegisterCount)
+  func totalCoolingSensible(projectSHR: Double) throws -> Double {
+    try room.coolingSensiblePerRegister(projectSHR: projectSHR) * Double(actualRegisterCount)
   }
 }
 
-extension DuctSizing.TrunkSize {
+extension TrunkSize {
 
   var totalHeatingLoad: Double {
     rooms.reduce(into: 0) { $0 += $1.totalHeatingLoad }
   }
 
-  func totalCoolingSensible(projectSHR: Double) -> Double {
-    rooms.reduce(into: 0) { $0 += $1.totalCoolingSensible(projectSHR: projectSHR) }
+  func totalCoolingSensible(projectSHR: Double) throws -> Double {
+    try rooms.reduce(into: 0) { $0 += try $1.totalCoolingSensible(projectSHR: projectSHR) }
   }
 }
 
-extension ComponentPressureLosses {
-  var totalLosses: Double { values.reduce(0) { $0 + $1 } }
-}
-
 extension Array where Element == EffectiveLengthGroup {
   var totalEffectiveLength: Int {
     reduce(0) { $0 + $1.effectiveLength }
@@ -101,16 +96,16 @@ func roundSize(_ size: Double) throws -> Int {
   }
 }
 
-func velocity(cfm: Int, roundSize: Int) -> Int {
-  let cfm = Double(cfm)
+func velocity(cfm: ManualDClient.CFM, roundSize: Int) -> Int {
+  let cfm = Double(cfm.rawValue)
   let roundSize = Double(roundSize)
   let velocity = cfm / (pow(roundSize / 24, 2) * 3.14)
   return Int(round(velocity))
 }
 
-func flexSize(_ request: ManualDClient.DuctSizeRequest) throws -> Int {
-  let cfm = pow(Double(request.designCFM), 0.4)
-  let fr = pow(request.frictionRate / 1.76, 0.2)
+func flexSize(_ cfm: ManualDClient.CFM, _ frictionRate: Double) throws -> Int {
+  let cfm = pow(Double(cfm.rawValue), 0.4)
+  let fr = pow(frictionRate / 1.76, 0.2)
   let size = 0.55 * (cfm / fr)
   return try roundSize(size)
 }

Sources/ManualDClient/Interface.swift

@@ -0,0 +1,141 @@
+import Dependencies
+import DependenciesMacros
+import Logging
+import ManualDCore
+import Tagged
+
+extension DependencyValues {
+  /// Dependency that performs manual-d duct sizing calculations.
+  public var manualD: ManualDClient {
+    get { self[ManualDClient.self] }
+    set { self[ManualDClient.self] = newValue }
+  }
+}
+
+/// Performs manual-d duct sizing calculations.
+///
+///
+@DependencyClient
+public struct ManualDClient: Sendable {
+
+  /// Calculates the duct size for the given cfm and friction rate.
+  public var ductSize: @Sendable (CFM, DesignFrictionRate) async throws -> DuctSize
+  /// Calculates the design friction rate for the given request.
+  public var frictionRate: @Sendable (FrictionRateRequest) async throws -> FrictionRate
+  /// Calculates the equivalent rectangular size for the given round duct and rectangular height.
+  public var rectangularSize: @Sendable (RoundSize, Height) async throws -> RectangularSize
+
+  /// Calculates the duct size for the given cfm and friction rate.
+  ///
+  /// - Paramaters:
+  ///   - designCFM: The design cfm for the duct.
+  ///   - designFrictionRate: The design friction rate for the system.
+  public func ductSize(
+    cfm designCFM: Int,
+    frictionRate designFrictionRate: Double
+  ) async throws -> DuctSize {
+    try await ductSize(.init(rawValue: designCFM), .init(rawValue: designFrictionRate))
+  }
+
+  /// Calculates the duct size for the given cfm and friction rate.
+  ///
+  /// - Paramaters:
+  ///   - designCFM: The design cfm for the duct.
+  ///   - designFrictionRate: The design friction rate for the system.
+  public func ductSize(
+    cfm designCFM: Double,
+    frictionRate designFrictionRate: Double
+  ) async throws -> DuctSize {
+    try await ductSize(.init(rawValue: Int(designCFM)), .init(rawValue: designFrictionRate))
+  }
+
+  /// Calculates the equivalent rectangular size for the given round duct and rectangular height.
+  ///
+  /// - Paramaters:
+  ///   - roundSize: The round duct size.
+  ///   - height: The rectangular height of the duct.
+  public func rectangularSize(
+    round roundSize: RoundSize,
+    height: Height
+  ) async throws -> RectangularSize {
+    try await rectangularSize(roundSize, height)
+  }
+
+  /// Calculates the equivalent rectangular size for the given round duct and rectangular height.
+  ///
+  /// - Paramaters:
+  ///   - roundSize: The round duct size.
+  ///   - height: The rectangular height of the duct.
+  public func rectangularSize(
+    round roundSize: Int,
+    height: Int
+  ) async throws -> RectangularSize {
+    try await rectangularSize(.init(rawValue: roundSize), .init(rawValue: height))
+  }
+}
+
+extension ManualDClient: TestDependencyKey {
+  public static let testValue = Self()
+}
+
+extension ManualDClient {
+  /// A name space for tags used by the ManualDClient.
+  public enum Tag {
+    public enum CFM {}
+    public enum DesignFrictionRate {}
+    public enum Height {}
+    public enum Round {}
+  }
+
+  public typealias CFM = Tagged<Tag.CFM, Int>
+  public typealias DesignFrictionRate = Tagged<Tag.DesignFrictionRate, Double>
+  public typealias Height = Tagged<Tag.Height, Int>
+  public typealias RoundSize = Tagged<Tag.Round, Int>
+
+  public struct DuctSize: Codable, Equatable, Sendable {
+
+    public let calculatedSize: Double
+    public let finalSize: Int
+    public let flexSize: Int
+    public let velocity: Int
+
+    public init(
+      calculatedSize: Double,
+      finalSize: Int,
+      flexSize: Int,
+      velocity: Int
+    ) {
+      self.calculatedSize = calculatedSize
+      self.finalSize = finalSize
+      self.flexSize = flexSize
+      self.velocity = velocity
+    }
+  }
+
+  public struct FrictionRateRequest: Codable, Equatable, Sendable {
+
+    public let externalStaticPressure: Double
+    public let componentPressureLosses: [ComponentPressureLoss]
+    public let totalEquivalentLength: Int
+
+    public init(
+      externalStaticPressure: Double,
+      componentPressureLosses: [ComponentPressureLoss],
+      totalEquivalentLength: Int
+    ) {
+      self.externalStaticPressure = externalStaticPressure
+      self.componentPressureLosses = componentPressureLosses
+      self.totalEquivalentLength = totalEquivalentLength
+    }
+  }
+
+  public struct RectangularSize: Codable, Equatable, Sendable {
+    public let height: Int
+    public let width: Int
+
+    public init(height: Int, width: Int) {
+      self.height = height
+      self.width = width
+    }
+  }
+}

Sources/ManualDClient/Live.swift

@@ -4,41 +4,47 @@ import ManualDCore
 
 extension ManualDClient: DependencyKey {
   public static let liveValue: Self = .init(
-    ductSize: { request in
-      guard request.designCFM > 0 else {
+    ductSize: { cfm, frictionRate in
+      guard cfm > 0 else {
         throw ManualDError(message: "Design CFM should be greater than 0.")
       }
-      let fr = pow(request.frictionRate, 0.5)
-      let ductulatorSize = pow(Double(request.designCFM) / (3.12 * fr), 0.38)
+      let fr = pow(frictionRate.rawValue, 0.5)
+      let ductulatorSize = pow(Double(cfm.rawValue) / (3.12 * fr), 0.38)
       let finalSize = try roundSize(ductulatorSize)
-      let flexSize = try flexSize(request)
+      let flexSize = try flexSize(cfm, frictionRate.rawValue)
       return .init(
-        ductulatorSize: ductulatorSize,
+        calculatedSize: ductulatorSize,
         finalSize: finalSize,
         flexSize: flexSize,
-        velocity: velocity(cfm: request.designCFM, roundSize: finalSize)
+        velocity: velocity(cfm: cfm, roundSize: finalSize)
       )
     },
     frictionRate: { request in
       // Ensure the total effective length is greater than 0.
-      guard request.totalEffectiveLength > 0 else {
+      guard request.totalEquivalentLength > 0 else {
         throw ManualDError(message: "Total Effective Length should be greater than 0.")
       }
 
       let totalComponentLosses = request.componentPressureLosses.total
       let availableStaticPressure = request.externalStaticPressure - totalComponentLosses
-      let frictionRate = availableStaticPressure * 100.0 / Double(request.totalEffectiveLength)
-      return .init(availableStaticPressure: availableStaticPressure, frictionRate: frictionRate)
+      let frictionRate = availableStaticPressure * 100.0 / Double(request.totalEquivalentLength)
+      return .init(
+        availableStaticPressure: availableStaticPressure,
+        value: frictionRate
+      )
     },
-    totalEffectiveLength: { request in
-      let trunkLengths = request.trunkLengths.reduce(0) { $0 + $1 }
-      let runoutLengths = request.runoutLengths.reduce(0) { $0 + $1 }
-      let groupLengths = request.effectiveLengthGroups.totalEffectiveLength
-      return trunkLengths + runoutLengths + groupLengths
-    },
-    equivalentRectangularDuct: { request in
-      let width = (Double.pi * (pow(Double(request.roundSize) / 2.0, 2.0))) / Double(request.height)
-      return .init(height: request.height, width: Int(width.rounded(.toNearestOrEven)))
+    // totalEquivalentLength: { request in
+    //   let trunkLengths = request.trunkLengths.reduce(0) { $0 + $1 }
+    //   let runoutLengths = request.runoutLengths.reduce(0) { $0 + $1 }
+    //   let groupLengths = request.effectiveLengthGroups.totalEffectiveLength
+    //   return trunkLengths + runoutLengths + groupLengths
+    // },
+    rectangularSize: { round, height in
+      let width = (Double.pi * (pow(Double(round.rawValue) / 2.0, 2.0))) / Double(height.rawValue)
+      return .init(
+        height: height.rawValue,
+        width: Int(width.rounded(.toNearestOrEven))
+      )
     }
   )
 }

Sources/ManualDClient/ManualDClient.swift

@@ -1,274 +0,0 @@
-import Dependencies
-import DependenciesMacros
-import Logging
-import ManualDCore
-
-@DependencyClient
-public struct ManualDClient: Sendable {
-  public var ductSize: @Sendable (DuctSizeRequest) async throws -> DuctSizeResponse
-  public var frictionRate: @Sendable (FrictionRateRequest) async throws -> FrictionRateResponse
-  public var totalEffectiveLength: @Sendable (TotalEffectiveLengthRequest) async throws -> Int
-  public var equivalentRectangularDuct:
-    @Sendable (EquivalentRectangularDuctRequest) async throws -> EquivalentRectangularDuctResponse
-
-  public func calculateSizes(
-    rooms: [Room],
-    trunks: [DuctSizing.TrunkSize],
-    equipmentInfo: EquipmentInfo,
-    maxSupplyLength: EffectiveLength,
-    maxReturnLength: EffectiveLength,
-    designFrictionRate: Double,
-    projectSHR: Double,
-    logger: Logger? = nil
-  ) async throws -> (rooms: [DuctSizing.RoomContainer], trunks: [DuctSizing.TrunkContainer]) {
-    try await (
-      calculateSizes(
-        rooms: rooms, equipmentInfo: equipmentInfo,
-        maxSupplyLength: maxSupplyLength, maxReturnLength: maxReturnLength,
-        designFrictionRate: designFrictionRate, projectSHR: projectSHR
-      ),
-      calculateSizes(
-        rooms: rooms, trunks: trunks, equipmentInfo: equipmentInfo,
-        maxSupplyLength: maxSupplyLength, maxReturnLength: maxReturnLength,
-        designFrictionRate: designFrictionRate, projectSHR: projectSHR)
-    )
-  }
-
-  func calculateSizes(
-    rooms: [Room],
-    equipmentInfo: EquipmentInfo,
-    maxSupplyLength: EffectiveLength,
-    maxReturnLength: EffectiveLength,
-    designFrictionRate: Double,
-    projectSHR: Double,
-    logger: Logger? = nil
-  ) async throws -> [DuctSizing.RoomContainer] {
-
-    var retval: [DuctSizing.RoomContainer] = []
-    let totalHeatingLoad = rooms.totalHeatingLoad
-    let totalCoolingSensible = rooms.totalCoolingSensible(shr: projectSHR)
-
-    for room in rooms {
-      let heatingLoad = room.heatingLoadPerRegister
-      let coolingLoad = room.coolingSensiblePerRegister(projectSHR: projectSHR)
-      let heatingPercent = heatingLoad / totalHeatingLoad
-      let coolingPercent = coolingLoad / totalCoolingSensible
-      let heatingCFM = heatingPercent * Double(equipmentInfo.heatingCFM)
-      let coolingCFM = coolingPercent * Double(equipmentInfo.coolingCFM)
-      let designCFM = DuctSizing.DesignCFM(heating: heatingCFM, cooling: coolingCFM)
-      let sizes = try await self.ductSize(
-        .init(designCFM: Int(designCFM.value), frictionRate: designFrictionRate)
-      )
-
-      for n in 1...room.registerCount {
-
-        var rectangularWidth: Int? = nil
-        let rectangularSize = room.rectangularSizes?
-          .first(where: { $0.register == nil || $0.register == n })
-
-        if let rectangularSize {
-          let response = try await self.equivalentRectangularDuct(
-            .init(round: sizes.finalSize, height: rectangularSize.height)
-          )
-          rectangularWidth = response.width
-        }
-
-        retval.append(
-          .init(
-            roomID: room.id,
-            roomName: "\(room.name)-\(n)",
-            roomRegister: n,
-            heatingLoad: heatingLoad,
-            coolingLoad: coolingLoad,
-            heatingCFM: heatingCFM,
-            coolingCFM: coolingCFM,
-            designCFM: designCFM,
-            roundSize: sizes.ductulatorSize,
-            finalSize: sizes.finalSize,
-            velocity: sizes.velocity,
-            flexSize: sizes.flexSize,
-            rectangularSize: rectangularSize,
-            rectangularWidth: rectangularWidth
-          )
-        )
-      }
-    }
-
-    return retval
-  }
-
-  func calculateSizes(
-    rooms: [Room],
-    trunks: [DuctSizing.TrunkSize],
-    equipmentInfo: EquipmentInfo,
-    maxSupplyLength: EffectiveLength,
-    maxReturnLength: EffectiveLength,
-    designFrictionRate: Double,
-    projectSHR: Double,
-    logger: Logger? = nil
-  ) async throws -> [DuctSizing.TrunkContainer] {
-
-    var retval = [DuctSizing.TrunkContainer]()
-    let totalHeatingLoad = rooms.totalHeatingLoad
-    let totalCoolingSensible = rooms.totalCoolingSensible(shr: projectSHR)
-
-    for trunk in trunks {
-      let heatingLoad = trunk.totalHeatingLoad
-      let coolingLoad = trunk.totalCoolingSensible(projectSHR: projectSHR)
-      let heatingPercent = heatingLoad / totalHeatingLoad
-      let coolingPercent = coolingLoad / totalCoolingSensible
-      let heatingCFM = heatingPercent * Double(equipmentInfo.heatingCFM)
-      let coolingCFM = coolingPercent * Double(equipmentInfo.coolingCFM)
-      let designCFM = DuctSizing.DesignCFM(heating: heatingCFM, cooling: coolingCFM)
-      let sizes = try await self.ductSize(
-        .init(designCFM: Int(designCFM.value), frictionRate: designFrictionRate)
-      )
-      var width: Int? = nil
-      if let height = trunk.height {
-        let rectangularSize = try await self.equivalentRectangularDuct(
-          .init(round: sizes.finalSize, height: height)
-        )
-        width = rectangularSize.width
-      }
-
-      retval.append(
-        .init(
-          trunk: trunk,
-          ductSize: .init(
-            designCFM: designCFM,
-            roundSize: sizes.ductulatorSize,
-            finalSize: sizes.finalSize,
-            velocity: sizes.velocity,
-            flexSize: sizes.flexSize,
-            height: trunk.height,
-            width: width
-          )
-        )
-      )
-    }
-
-    return retval
-  }
-
-}
-
-extension ManualDClient: TestDependencyKey {
-  public static let testValue = Self()
-}
-
-extension DependencyValues {
-  public var manualD: ManualDClient {
-    get { self[ManualDClient.self] }
-    set { self[ManualDClient.self] = newValue }
-  }
-}
-
-// MARK: Duct Size
-extension ManualDClient {
-  public struct DuctSizeRequest: Codable, Equatable, Sendable {
-    public let designCFM: Int
-    public let frictionRate: Double
-
-    public init(
-      designCFM: Int,
-      frictionRate: Double
-    ) {
-      self.designCFM = designCFM
-      self.frictionRate = frictionRate
-    }
-  }
-
-  public struct DuctSizeResponse: Codable, Equatable, Sendable {
-
-    public let ductulatorSize: Double
-    public let finalSize: Int
-    public let flexSize: Int
-    public let velocity: Int
-
-    public init(
-      ductulatorSize: Double,
-      finalSize: Int,
-      flexSize: Int,
-      velocity: Int
-    ) {
-      self.ductulatorSize = ductulatorSize
-      self.finalSize = finalSize
-      self.flexSize = flexSize
-      self.velocity = velocity
-    }
-  }
-}
-
-// MARK: -  Friction Rate
-extension ManualDClient {
-  public struct FrictionRateRequest: Codable, Equatable, Sendable {
-
-    public let externalStaticPressure: Double
-    public let componentPressureLosses: [ComponentPressureLoss]
-    public let totalEffectiveLength: Int
-
-    public init(
-      externalStaticPressure: Double,
-      componentPressureLosses: [ComponentPressureLoss],
-      totalEffectiveLength: Int
-    ) {
-      self.externalStaticPressure = externalStaticPressure
-      self.componentPressureLosses = componentPressureLosses
-      self.totalEffectiveLength = totalEffectiveLength
-    }
-  }
-
-  public struct FrictionRateResponse: Codable, Equatable, Sendable {
-
-    public let availableStaticPressure: Double
-    public let frictionRate: Double
-
-    public init(availableStaticPressure: Double, frictionRate: Double) {
-      self.availableStaticPressure = availableStaticPressure
-      self.frictionRate = frictionRate
-    }
-  }
-}
-
-// MARK: Total Effective Length
-extension ManualDClient {
-  public struct TotalEffectiveLengthRequest: Codable, Equatable, Sendable {
-
-    public let trunkLengths: [Int]
-    public let runoutLengths: [Int]
-    public let effectiveLengthGroups: [EffectiveLengthGroup]
-
-    public init(
-      trunkLengths: [Int],
-      runoutLengths: [Int],
-      effectiveLengthGroups: [EffectiveLengthGroup]
-    ) {
-      self.trunkLengths = trunkLengths
-      self.runoutLengths = runoutLengths
-      self.effectiveLengthGroups = effectiveLengthGroups
-    }
-  }
-}
-
-// MARK: Equivalent Rectangular Duct
-extension ManualDClient {
-  public struct EquivalentRectangularDuctRequest: Codable, Equatable, Sendable {
-    public let roundSize: Int
-    public let height: Int
-
-    public init(round roundSize: Int, height: Int) {
-      self.roundSize = roundSize
-      self.height = height
-    }
-  }
-
-  public struct EquivalentRectangularDuctResponse: Codable, Equatable, Sendable {
-    public let height: Int
-    public let width: Int
-
-    public init(height: Int, width: Int) {
-      self.height = height
-      self.width = width
-    }
-  }
-}

Sources/ManualDCore/ComponentPressureLoss.swift

@@ -1,5 +1,10 @@
+import Dependencies
 import Foundation
 
+/// Represents component pressure losses used in the friction rate worksheet.
+///
+/// These are items such as filter, evaporator-coils, balance-dampers, etc. that
+/// need to be overcome by the system fan.
 public struct ComponentPressureLoss: Codable, Equatable, Identifiable, Sendable {
 
   public let id: UUID
@@ -43,7 +48,7 @@ extension ComponentPressureLoss {
       self.value = value
     }
 
-    // Return's commonly used default component pressure losses.
+    /// Commonly used default component pressure losses.
     public static func `default`(projectID: Project.ID) -> [Self] {
       [
         .init(projectID: projectID, name: "supply-outlet", value: 0.03),
@@ -74,22 +79,63 @@ extension Array where Element == ComponentPressureLoss {
   }
 }
 
-public typealias ComponentPressureLosses = [String: Double]
-
 #if DEBUG
-  extension ComponentPressureLosses {
-    public static var mock: Self {
-      [
-        "evaporator-coil": 0.2,
-        "filter": 0.1,
-        "supply-outlet": 0.03,
-        "return-grille": 0.03,
-        "balancing-damper": 0.03,
-      ]
+
+  extension Array where Element == ComponentPressureLoss {
+    public static func mock(projectID: Project.ID) -> Self {
+      ComponentPressureLoss.mock(projectID: projectID)
     }
   }
 
   extension ComponentPressureLoss {
+    public static func mock(projectID: Project.ID) -> [Self] {
+      @Dependency(\.uuid) var uuid
+      @Dependency(\.date.now) var now
+
+      return [
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "evaporator-coil",
+          value: 0.2,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "filter",
+          value: 0.1,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "supply-outlet",
+          value: 0.03,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "return-grille",
+          value: 0.03,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "balancing-damper",
+          value: 0.03,
+          createdAt: now,
+          updatedAt: now
+        ),
+      ]
+    }
+
     public static var mock: [Self] {
       [
         .init(

Sources/ManualDCore/CoolingLoad.swift

@@ -1,13 +1,14 @@
-import Foundation
+// import Foundation
 
-public struct CoolingLoad: Codable, Equatable, Sendable {
-  public let total: Double
-  public let sensible: Double
-  public var latent: Double { total - sensible }
-  public var shr: Double { sensible / total }
-
-  public init(total: Double, sensible: Double) {
-    self.total = total
-    self.sensible = sensible
-  }
-}
+//
+// public struct CoolingLoad: Codable, Equatable, Sendable {
+//   public let total: Double
+//   public let sensible: Double
+//   public var latent: Double { total - sensible }
+//   public var shr: Double { sensible / total }
+//
+//   public init(total: Double, sensible: Double) {
+//     self.total = total
+//     self.sensible = sensible
+//   }
+// }

Sources/ManualDCore/DuctSizes.swift

@@ -0,0 +1,259 @@
+import Dependencies
+import Foundation
+
+public struct DuctSizes: Codable, Equatable, Sendable {
+
+  public let rooms: [RoomContainer]
+  public let trunks: [TrunkContainer]
+
+  public init(
+    rooms: [DuctSizes.RoomContainer],
+    trunks: [DuctSizes.TrunkContainer]
+  ) {
+    self.rooms = rooms
+    self.trunks = trunks
+  }
+}
+
+extension DuctSizes {
+
+  public struct SizeContainer: Codable, Equatable, Sendable {
+
+    public let rectangularID: Room.RectangularSize.ID?
+    public let designCFM: DesignCFM
+    public let roundSize: Double
+    public let finalSize: Int
+    public let velocity: Int
+    public let flexSize: Int
+    public let height: Int?
+    public let width: Int?
+
+    public init(
+      rectangularID: Room.RectangularSize.ID? = nil,
+      designCFM: DuctSizes.DesignCFM,
+      roundSize: Double,
+      finalSize: Int,
+      velocity: Int,
+      flexSize: Int,
+      height: Int? = nil,
+      width: Int? = nil
+    ) {
+      self.rectangularID = rectangularID
+      self.designCFM = designCFM
+      self.roundSize = roundSize
+      self.finalSize = finalSize
+      self.velocity = velocity
+      self.flexSize = flexSize
+      self.height = height
+      self.width = width
+    }
+  }
+
+  @dynamicMemberLookup
+  public struct RoomContainer: Codable, Equatable, Sendable {
+
+    public let roomID: Room.ID
+    public let roomName: String
+    public let roomRegister: Int
+    public let heatingLoad: Double
+    public let coolingLoad: Double
+    public let heatingCFM: Double
+    public let coolingCFM: Double
+    public let ductSize: SizeContainer
+
+    public init(
+      roomID: Room.ID,
+      roomName: String,
+      roomRegister: Int,
+      heatingLoad: Double,
+      coolingLoad: Double,
+      heatingCFM: Double,
+      coolingCFM: Double,
+      ductSize: SizeContainer
+    ) {
+      self.roomID = roomID
+      self.roomName = roomName
+      self.roomRegister = roomRegister
+      self.heatingLoad = heatingLoad
+      self.coolingLoad = coolingLoad
+      self.heatingCFM = heatingCFM
+      self.coolingCFM = coolingCFM
+      self.ductSize = ductSize
+    }
+
+    public subscript<T>(dynamicMember keyPath: KeyPath<DuctSizes.SizeContainer, T>) -> T {
+      ductSize[keyPath: keyPath]
+    }
+  }
+
+  public enum DesignCFM: Codable, Equatable, Sendable {
+    case heating(Double)
+    case cooling(Double)
+
+    public init(heating: Double, cooling: Double) {
+      if heating >= cooling {
+        self = .heating(heating)
+      } else {
+        self = .cooling(cooling)
+      }
+    }
+
+    public var value: Double {
+      switch self {
+      case .heating(let value): return value
+      case .cooling(let value): return value
+      }
+    }
+  }
+
+  // Represents the database model that the duct sizes have been calculated
+  // for.
+  @dynamicMemberLookup
+  public struct TrunkContainer: Codable, Equatable, Identifiable, Sendable {
+    public var id: TrunkSize.ID { trunk.id }
+
+    public let trunk: TrunkSize
+    public let ductSize: SizeContainer
+
+    public init(
+      trunk: TrunkSize,
+      ductSize: SizeContainer
+    ) {
+      self.trunk = trunk
+      self.ductSize = ductSize
+    }
+
+    public subscript<T>(dynamicMember keyPath: KeyPath<TrunkSize, T>) -> T {
+      trunk[keyPath: keyPath]
+    }
+
+    public subscript<T>(dynamicMember keyPath: KeyPath<DuctSizes.SizeContainer, T>) -> T {
+      ductSize[keyPath: keyPath]
+    }
+
+    public func registerIDS(rooms: [RoomContainer]) -> [String] {
+      trunk.rooms.reduce(into: []) { array, room in
+        array = room.registers.reduce(into: array) { array, register in
+          if let room =
+            rooms
+            .first(where: { $0.roomID == room.id && $0.roomRegister == register })
+          {
+            array.append(room.roomName)
+          }
+        }
+      }
+      .sorted()
+    }
+  }
+}
+
+#if DEBUG
+  extension DuctSizes {
+    public static func mock(
+      equipmentInfo: EquipmentInfo,
+      rooms: [Room],
+      trunks: [TrunkSize],
+      shr: Double
+    ) -> Self {
+
+      let totalHeatingLoad = rooms.totalHeatingLoad
+      let totalCoolingLoad = try! rooms.totalCoolingLoad(shr: shr)
+
+      let roomContainers = rooms.reduce(into: [RoomContainer]()) { array, room in
+        array += RoomContainer.mock(
+          room: room,
+          totalHeatingLoad: totalHeatingLoad,
+          totalCoolingLoad: totalCoolingLoad,
+          totalHeatingCFM: Double(equipmentInfo.heatingCFM),
+          totalCoolingCFM: Double(equipmentInfo.coolingCFM),
+          shr: shr
+        )
+      }
+
+      return .init(
+        rooms: roomContainers,
+        trunks: TrunkContainer.mock(
+          trunks: trunks,
+          totalHeatingLoad: totalHeatingLoad,
+          totalCoolingLoad: totalCoolingLoad,
+          totalHeatingCFM: Double(equipmentInfo.heatingCFM),
+          totalCoolingCFM: Double(equipmentInfo.coolingCFM)
+        )
+      )
+    }
+  }
+
+  extension DuctSizes.RoomContainer {
+    public static func mock(
+      room: Room,
+      totalHeatingLoad: Double,
+      totalCoolingLoad: Double,
+      totalHeatingCFM: Double,
+      totalCoolingCFM: Double,
+      shr: Double
+    ) -> [Self] {
+      var retval = [DuctSizes.RoomContainer]()
+      let heatingLoad = room.heatingLoad / Double(room.registerCount)
+      let heatingFraction = heatingLoad / totalHeatingLoad
+      let heatingCFM = totalHeatingCFM * heatingFraction
+      // Not really accurate, but works for mocks.
+      let coolingLoad = (try! room.coolingLoad.ensured(shr: shr).total) / Double(room.registerCount)
+      let coolingFraction = coolingLoad / totalCoolingLoad
+      let coolingCFM = totalCoolingCFM * coolingFraction
+
+      for n in 1...room.registerCount {
+
+        retval.append(
+          .init(
+            roomID: room.id,
+            roomName: room.name,
+            roomRegister: n,
+            heatingLoad: heatingLoad,
+            coolingLoad: coolingLoad,
+            heatingCFM: heatingCFM,
+            coolingCFM: coolingCFM,
+            ductSize: .init(
+              rectangularID: nil,
+              designCFM: .init(heating: heatingCFM, cooling: coolingCFM),
+              roundSize: 7,
+              finalSize: 8,
+              velocity: 489,
+              flexSize: 8,
+              height: nil,
+              width: nil
+            )
+          )
+        )
+      }
+      return retval
+    }
+
+  }
+
+  extension DuctSizes.TrunkContainer {
+
+    public static func mock(
+      trunks: [TrunkSize],
+      totalHeatingLoad: Double,
+      totalCoolingLoad: Double,
+      totalHeatingCFM: Double,
+      totalCoolingCFM: Double
+    ) -> [Self] {
+      trunks.reduce(into: []) { array, trunk in
+        array.append(
+          .init(
+            trunk: trunk,
+            ductSize: .init(
+              designCFM: .init(heating: totalHeatingCFM, cooling: totalCoolingCFM),
+              roundSize: 18,
+              finalSize: 20,
+              velocity: 987,
+              flexSize: 20
+            )
+          )
+        )
+      }
+    }
+  }
+
+#endif

Sources/ManualDCore/DuctSizing.swift

@@ -1,248 +0,0 @@
-import Dependencies
-import Foundation
-
-public enum DuctSizing {
-
-  public struct RectangularDuct: Codable, Equatable, Identifiable, Sendable {
-
-    public let id: UUID
-    public let register: Int?
-    public let height: Int
-
-    public init(
-      id: UUID = .init(),
-      register: Int? = nil,
-      height: Int,
-    ) {
-      self.id = id
-      self.register = register
-      self.height = height
-    }
-
-  }
-
-  public struct SizeContainer: Codable, Equatable, Sendable {
-
-    public let designCFM: DesignCFM
-    public let roundSize: Double
-    public let finalSize: Int
-    public let velocity: Int
-    public let flexSize: Int
-    public let height: Int?
-    public let width: Int?
-
-    public init(
-      designCFM: DuctSizing.DesignCFM,
-      roundSize: Double,
-      finalSize: Int,
-      velocity: Int,
-      flexSize: Int,
-      height: Int? = nil,
-      width: Int? = nil
-    ) {
-      self.designCFM = designCFM
-      self.roundSize = roundSize
-      self.finalSize = finalSize
-      self.velocity = velocity
-      self.flexSize = flexSize
-      self.height = height
-      self.width = width
-    }
-  }
-
-  // TODO: Uses SizeContainer
-
-  public struct RoomContainer: Codable, Equatable, Sendable {
-
-    public let roomID: Room.ID
-    public let roomName: String
-    public let roomRegister: Int
-    public let heatingLoad: Double
-    public let coolingLoad: Double
-    public let heatingCFM: Double
-    public let coolingCFM: Double
-    public let designCFM: DesignCFM
-    public let roundSize: Double
-    public let finalSize: Int
-    public let velocity: Int
-    public let flexSize: Int
-    public let rectangularSize: RectangularDuct?
-    public let rectangularWidth: Int?
-
-    public init(
-      roomID: Room.ID,
-      roomName: String,
-      roomRegister: Int,
-      heatingLoad: Double,
-      coolingLoad: Double,
-      heatingCFM: Double,
-      coolingCFM: Double,
-      designCFM: DesignCFM,
-      roundSize: Double,
-      finalSize: Int,
-      velocity: Int,
-      flexSize: Int,
-      rectangularSize: RectangularDuct? = nil,
-      rectangularWidth: Int? = nil
-    ) {
-      self.roomID = roomID
-      self.roomName = roomName
-      self.roomRegister = roomRegister
-      self.heatingLoad = heatingLoad
-      self.coolingLoad = coolingLoad
-      self.heatingCFM = heatingCFM
-      self.coolingCFM = coolingCFM
-      self.designCFM = designCFM
-      self.roundSize = roundSize
-      self.finalSize = finalSize
-      self.velocity = velocity
-      self.flexSize = flexSize
-      self.rectangularSize = rectangularSize
-      self.rectangularWidth = rectangularWidth
-    }
-  }
-
-  public enum DesignCFM: Codable, Equatable, Sendable {
-    case heating(Double)
-    case cooling(Double)
-
-    public init(heating: Double, cooling: Double) {
-      if heating >= cooling {
-        self = .heating(heating)
-      } else {
-        self = .cooling(cooling)
-      }
-    }
-
-    public var value: Double {
-      switch self {
-      case .heating(let value): return value
-      case .cooling(let value): return value
-      }
-    }
-  }
-}
-
-extension DuctSizing {
-
-  // Represents the database model that the duct sizes have been calculated
-  // for.
-  @dynamicMemberLookup
-  public struct TrunkContainer: Codable, Equatable, Identifiable, Sendable {
-    public var id: TrunkSize.ID { trunk.id }
-
-    public let trunk: TrunkSize
-    public let ductSize: SizeContainer
-
-    public init(
-      trunk: TrunkSize,
-      ductSize: SizeContainer
-    ) {
-      self.trunk = trunk
-      self.ductSize = ductSize
-    }
-
-    public subscript<T>(dynamicMember keyPath: KeyPath<DuctSizing.TrunkSize, T>) -> T {
-      trunk[keyPath: keyPath]
-    }
-
-    public subscript<T>(dynamicMember keyPath: KeyPath<DuctSizing.SizeContainer, T>) -> T {
-      ductSize[keyPath: keyPath]
-    }
-  }
-
-  // TODO: Add an optional label that the user can set.
-
-  // Represents the database model.
-  public struct TrunkSize: Codable, Equatable, Identifiable, Sendable {
-
-    public let id: UUID
-    public let projectID: Project.ID
-    public let type: TrunkType
-    public let rooms: [RoomProxy]
-    public let height: Int?
-    public let name: String?
-
-    public init(
-      id: UUID,
-      projectID: Project.ID,
-      type: DuctSizing.TrunkSize.TrunkType,
-      rooms: [DuctSizing.TrunkSize.RoomProxy],
-      height: Int? = nil,
-      name: String? = nil
-    ) {
-      self.id = id
-      self.projectID = projectID
-      self.type = type
-      self.rooms = rooms
-      self.height = height
-      self.name = name
-    }
-  }
-
-}
-
-extension DuctSizing.TrunkSize {
-  public struct Create: Codable, Equatable, Sendable {
-
-    public let projectID: Project.ID
-    public let type: TrunkType
-    public let rooms: [Room.ID: [Int]]
-    public let height: Int?
-    public let name: String?
-
-    public init(
-      projectID: Project.ID,
-      type: DuctSizing.TrunkSize.TrunkType,
-      rooms: [Room.ID: [Int]],
-      height: Int? = nil,
-      name: String? = nil
-    ) {
-      self.projectID = projectID
-      self.type = type
-      self.rooms = rooms
-      self.height = height
-      self.name = name
-    }
-  }
-
-  public struct Update: Codable, Equatable, Sendable {
-
-    public let type: TrunkType?
-    public let rooms: [Room.ID: [Int]]?
-    public let height: Int?
-    public let name: String?
-
-    public init(
-      type: DuctSizing.TrunkSize.TrunkType? = nil,
-      rooms: [Room.ID: [Int]]? = nil,
-      height: Int? = nil,
-      name: String? = nil
-    ) {
-      self.type = type
-      self.rooms = rooms
-      self.height = height
-      self.name = name
-    }
-  }
-
-  // TODO: Make registers non-optional
-  public struct RoomProxy: Codable, Equatable, Identifiable, Sendable {
-
-    public var id: Room.ID { room.id }
-    public let room: Room
-    public let registers: [Int]
-
-    public init(room: Room, registers: [Int]) {
-      self.room = room
-      self.registers = registers
-    }
-  }
-
-  public enum TrunkType: String, CaseIterable, Codable, Equatable, Sendable {
-    case `return`
-    case supply
-
-    public static let allCases = [Self.supply, .return]
-  }
-}

Sources/ManualDCore/EffectiveLength.swift

@@ -1,177 +0,0 @@
-import Dependencies
-import Foundation
-
-// TODO: Not sure how to model effective length groups in the database.
-//       thinking perhaps just have a 'data' field that encoded / decodes
-//       to swift types??
-public struct EffectiveLength: Codable, Equatable, Identifiable, Sendable {
-
-  public let id: UUID
-  public let projectID: Project.ID
-  public let name: String
-  public let type: EffectiveLengthType
-  public let straightLengths: [Int]
-  public let groups: [Group]
-  public let createdAt: Date
-  public let updatedAt: Date
-
-  public init(
-    id: UUID,
-    projectID: Project.ID,
-    name: String,
-    type: EffectiveLength.EffectiveLengthType,
-    straightLengths: [Int],
-    groups: [EffectiveLength.Group],
-    createdAt: Date,
-    updatedAt: Date
-  ) {
-    self.id = id
-    self.projectID = projectID
-    self.name = name
-    self.type = type
-    self.straightLengths = straightLengths
-    self.groups = groups
-    self.createdAt = createdAt
-    self.updatedAt = updatedAt
-  }
-}
-
-extension EffectiveLength {
-
-  public struct Create: Codable, Equatable, Sendable {
-
-    public let projectID: Project.ID
-    public let name: String
-    public let type: EffectiveLengthType
-    public let straightLengths: [Int]
-    public let groups: [Group]
-
-    public init(
-      projectID: Project.ID,
-      name: String,
-      type: EffectiveLength.EffectiveLengthType,
-      straightLengths: [Int],
-      groups: [EffectiveLength.Group]
-    ) {
-      self.projectID = projectID
-      self.name = name
-      self.type = type
-      self.straightLengths = straightLengths
-      self.groups = groups
-    }
-  }
-
-  public struct Update: Codable, Equatable, Sendable {
-
-    public let name: String?
-    public let type: EffectiveLengthType?
-    public let straightLengths: [Int]?
-    public let groups: [Group]?
-
-    public init(
-      name: String? = nil,
-      type: EffectiveLength.EffectiveLengthType? = nil,
-      straightLengths: [Int]? = nil,
-      groups: [EffectiveLength.Group]? = nil
-    ) {
-      self.name = name
-      self.type = type
-      self.straightLengths = straightLengths
-      self.groups = groups
-    }
-  }
-
-  public enum EffectiveLengthType: String, CaseIterable, Codable, Sendable {
-    case `return`
-    case supply
-  }
-
-  public struct Group: Codable, Equatable, Sendable {
-
-    public let group: Int
-    public let letter: String
-    public let value: Double
-    public let quantity: Int
-
-    public init(
-      group: Int,
-      letter: String,
-      value: Double,
-      quantity: Int = 1
-    ) {
-      self.group = group
-      self.letter = letter
-      self.value = value
-      self.quantity = quantity
-    }
-  }
-
-  public struct MaxContainer: Codable, Equatable, Sendable {
-    public let supply: EffectiveLength?
-    public let `return`: EffectiveLength?
-
-    public var total: Double? {
-      guard let supply else { return nil }
-      guard let `return` else { return nil }
-      return supply.totalEquivalentLength + `return`.totalEquivalentLength
-    }
-
-    public init(supply: EffectiveLength? = nil, return: EffectiveLength? = nil) {
-      self.supply = supply
-      self.return = `return`
-    }
-  }
-}
-
-extension EffectiveLength {
-  public var totalEquivalentLength: Double {
-    straightLengths.reduce(into: 0.0) { $0 += Double($1) }
-      + groups.totalEquivalentLength
-  }
-}
-
-extension Array where Element == EffectiveLength.Group {
-
-  public var totalEquivalentLength: Double {
-    reduce(into: 0.0) {
-      $0 += ($1.value * Double($1.quantity))
-    }
-  }
-}
-
-#if DEBUG
-
-  extension EffectiveLength {
-    public static let mocks: [Self] = [
-      .init(
-        id: UUID(0),
-        projectID: UUID(0),
-        name: "Test Supply - 1",
-        type: .supply,
-        straightLengths: [10, 20, 25],
-        groups: [
-          .init(group: 1, letter: "a", value: 20),
-          .init(group: 2, letter: "b", value: 15, quantity: 2),
-          .init(group: 3, letter: "c", value: 10, quantity: 1),
-        ],
-        createdAt: Date(),
-        updatedAt: Date()
-      ),
-      .init(
-        id: UUID(1),
-        projectID: UUID(0),
-        name: "Test Return - 1",
-        type: .return,
-        straightLengths: [10, 20, 25],
-        groups: [
-          .init(group: 1, letter: "a", value: 20),
-          .init(group: 2, letter: "b", value: 15, quantity: 2),
-          .init(group: 3, letter: "c", value: 10, quantity: 1),
-        ],
-        createdAt: Date(),
-        updatedAt: Date()
-      ),
-    ]
-  }
-
-#endif

Sources/ManualDCore/EffectiveLengthGroup.swift

@@ -1,5 +1,7 @@
 import Foundation
 
+// TODO: These are not used, should they be removed??
+
 // TODO: Add other description / label for items that have same group & letter, but
 //       different effective length.
 public struct EffectiveLengthGroup: Codable, Equatable, Sendable {

Sources/ManualDCore/EquipmentInfo.swift

@@ -1,6 +1,10 @@
 import Dependencies
 import Foundation
 
+/// Represents the equipment information for a project.
+///
+/// This is used in the friction rate worksheet and sizing ducts. It holds on to items
+/// such as the target static pressure, cooling CFM, and heating CFM for the project.
 public struct EquipmentInfo: Codable, Equatable, Identifiable, Sendable {
   public let id: UUID
   public let projectID: Project.ID
@@ -70,6 +74,21 @@ extension EquipmentInfo {
 
 #if DEBUG
   extension EquipmentInfo {
+
+    public static func mock(projectID: Project.ID) -> Self {
+      @Dependency(\.uuid) var uuid
+      @Dependency(\.date.now) var now
+
+      return .init(
+        id: uuid(),
+        projectID: projectID,
+        heatingCFM: 900,
+        coolingCFM: 1000,
+        createdAt: now,
+        updatedAt: now
+      )
+    }
+
     public static let mock = Self(
       id: UUID(0),
       projectID: UUID(0),

Sources/ManualDCore/EquivalentLength.swift

@@ -0,0 +1,239 @@
+import Dependencies
+import Foundation
+
+/// Represents the equivalent length of a single duct path.
+///
+/// These consist of both straight lengths of duct / trunks, as well as the
+/// equivalent length of duct fittings.  They are used to determine the worst
+/// case total equivalent length of duct that the system fan has to move air
+/// through.
+///
+/// There can be many equivalent lengths saved for a project, however the only
+/// ones that matter in most calculations are the longest supply path and the
+/// the longest return path.
+///
+/// It is required that project has at least one equivalent length saved for
+/// the supply and one saved for return, otherwise duct sizes can not be calculated.
+public struct EquivalentLength: Codable, Equatable, Identifiable, Sendable {
+
+  /// The id of the equivalent length.
+  public let id: UUID
+  /// The project that this equivalent length is associated with.
+  public let projectID: Project.ID
+  /// A unique name / label for this equivalent length.
+  public let name: String
+  /// The type (supply or return) of the equivalent length.
+  public let type: EffectiveLengthType
+  /// The straight lengths of duct for this equivalent length.
+  public let straightLengths: [Int]
+  /// The fitting groups associated with this equivalent length.
+  public let groups: [FittingGroup]
+  /// When this equivalent length was created in the database.
+  public let createdAt: Date
+  /// When this equivalent length was updated in the database.
+  public let updatedAt: Date
+
+  public init(
+    id: UUID,
+    projectID: Project.ID,
+    name: String,
+    type: EquivalentLength.EffectiveLengthType,
+    straightLengths: [Int],
+    groups: [EquivalentLength.FittingGroup],
+    createdAt: Date,
+    updatedAt: Date
+  ) {
+    self.id = id
+    self.projectID = projectID
+    self.name = name
+    self.type = type
+    self.straightLengths = straightLengths
+    self.groups = groups
+    self.createdAt = createdAt
+    self.updatedAt = updatedAt
+  }
+}
+
+extension EquivalentLength {
+
+  /// Represents the data needed to create a new ``EquivalentLength`` in the database.
+  public struct Create: Codable, Equatable, Sendable {
+
+    /// The project that this equivalent length is associated with.
+    public let projectID: Project.ID
+    /// A unique name / label for this equivalent length.
+    public let name: String
+    /// The type (supply or return) of the equivalent length.
+    public let type: EffectiveLengthType
+    /// The straight lengths of duct for this equivalent length.
+    public let straightLengths: [Int]
+    /// The fitting groups associated with this equivalent length.
+    public let groups: [FittingGroup]
+
+    public init(
+      projectID: Project.ID,
+      name: String,
+      type: EquivalentLength.EffectiveLengthType,
+      straightLengths: [Int],
+      groups: [EquivalentLength.FittingGroup]
+    ) {
+      self.projectID = projectID
+      self.name = name
+      self.type = type
+      self.straightLengths = straightLengths
+      self.groups = groups
+    }
+  }
+
+  /// Represents the data needed to update an ``EquivalentLength`` in the database.
+  ///
+  /// Only the supplied fields are updated.
+  public struct Update: Codable, Equatable, Sendable {
+
+    /// A unique name / label for this equivalent length.
+    public let name: String?
+    /// The type (supply or return) of the equivalent length.
+    public let type: EffectiveLengthType?
+    /// The straight lengths of duct for this equivalent length.
+    public let straightLengths: [Int]?
+    /// The fitting groups associated with this equivalent length.
+    public let groups: [FittingGroup]?
+
+    public init(
+      name: String? = nil,
+      type: EquivalentLength.EffectiveLengthType? = nil,
+      straightLengths: [Int]? = nil,
+      groups: [EquivalentLength.FittingGroup]? = nil
+    ) {
+      self.name = name
+      self.type = type
+      self.straightLengths = straightLengths
+      self.groups = groups
+    }
+  }
+
+  /// Represents the type of equivalent length, either supply or return.
+  public enum EffectiveLengthType: String, CaseIterable, Codable, Sendable {
+    case `return`
+    case supply
+  }
+
+  /// Represents a Manual-D fitting group.
+  ///
+  /// These are defined by Manual-D and convert different types of fittings into
+  /// an equivalent length of straight duct.
+  public struct FittingGroup: Codable, Equatable, Sendable {
+    /// The fitting group number.
+    public let group: Int
+    /// The fitting group letter.
+    public let letter: String
+    /// The equivalent length of the fitting.
+    public let value: Double
+    /// The quantity of the fittings in the path.
+    public let quantity: Int
+
+    public init(
+      group: Int,
+      letter: String,
+      value: Double,
+      quantity: Int = 1
+    ) {
+      self.group = group
+      self.letter = letter
+      self.value = value
+      self.quantity = quantity
+    }
+  }
+
+  // TODO: Should these not be optional and we just throw an error or return nil from
+  //       a database query.
+
+  /// Represents the max ``EquivalentLength``'s for a project.
+  ///
+  /// Calculating the duct sizes for a project requires there to be a max supply
+  /// and a max return equivalent length, so this container represents those values
+  /// when they exist in the database.
+  public struct MaxContainer: Codable, Equatable, Sendable {
+
+    /// The longest supply equivalent length.
+    public let supply: EquivalentLength?
+    /// The longest return equivalent length.
+    public let `return`: EquivalentLength?
+
+    public init(supply: EquivalentLength? = nil, return: EquivalentLength? = nil) {
+      self.supply = supply
+      self.return = `return`
+    }
+
+    public var totalEquivalentLength: Double? {
+      guard let supply else { return nil }
+      guard let `return` else { return nil }
+      return supply.totalEquivalentLength + `return`.totalEquivalentLength
+    }
+  }
+}
+
+extension EquivalentLength {
+
+  /// The calculated total equivalent length.
+  ///
+  /// This is the sum of all the straigth lengths and fitting groups (with quantities).
+  public var totalEquivalentLength: Double {
+    straightLengths.reduce(into: 0.0) { $0 += Double($1) }
+      + groups.totalEquivalentLength
+  }
+}
+
+extension Array where Element == EquivalentLength.FittingGroup {
+
+  /// The calculated total equivalent length for the fitting groups.
+  public var totalEquivalentLength: Double {
+    reduce(into: 0.0) {
+      $0 += ($1.value * Double($1.quantity))
+    }
+  }
+}
+
+#if DEBUG
+
+  extension EquivalentLength {
+
+    public static func mock(projectID: Project.ID) -> [Self] {
+      @Dependency(\.uuid) var uuid
+      @Dependency(\.date.now) var now
+
+      return [
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Supply - 1",
+          type: .supply,
+          straightLengths: [10, 25],
+          groups: [
+            .init(group: 1, letter: "a", value: 20),
+            .init(group: 2, letter: "b", value: 30, quantity: 1),
+            .init(group: 3, letter: "a", value: 10, quantity: 1),
+            .init(group: 12, letter: "a", value: 10, quantity: 1),
+          ],
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Return - 1",
+          type: .return,
+          straightLengths: [10, 20, 5],
+          groups: [
+            .init(group: 5, letter: "a", value: 10),
+            .init(group: 6, letter: "a", value: 15, quantity: 1),
+            .init(group: 7, letter: "a", value: 20, quantity: 1),
+          ],
+          createdAt: now,
+          updatedAt: now
+        ),
+      ]
+    }
+  }
+
+#endif

Sources/ManualDCore/Extensions/Numbers+string.swift

@@ -0,0 +1,37 @@
+import Foundation
+import Tagged
+
+extension Tagged where RawValue == Double {
+  public func string(digits: Int = 2) -> String {
+    rawValue.string(digits: digits)
+  }
+}
+
+extension Tagged where RawValue == Int {
+  public func string() -> String {
+    rawValue.string()
+  }
+}
+
+extension Double {
+
+  public func string(digits: Int = 2) -> String {
+    numberString(self, digits: digits)
+  }
+}
+
+extension Int {
+
+  public func string() -> String {
+    numberString(Double(self), digits: 0)
+  }
+}
+
+private func numberString(_ value: Double, digits: Int = 2) -> String {
+  let formatter = NumberFormatter()
+  formatter.maximumFractionDigits = digits
+  formatter.groupingSize = 3
+  formatter.groupingSeparator = ","
+  formatter.numberStyle = .decimal
+  return formatter.string(for: value)!
+}

Sources/ManualDCore/Extensions/PageRequest+extensions.swift

@@ -0,0 +1,12 @@
+import Fluent
+
+extension PageRequest {
+
+  public static var first: Self {
+    .init(page: 1, per: 25)
+  }
+
+  public static func next<T>(_ currentPage: Page<T>) -> Self {
+    .init(page: currentPage.metadata.page + 1, per: currentPage.metadata.per)
+  }
+}

Sources/ManualDCore/FrictionRate.swift

@@ -0,0 +1,69 @@
+/// Holds onto values returned when calculating the design
+/// friction rate for a project.
+///
+/// **NOTE:** This is not stored in the database, it is calculated on the fly.
+public struct FrictionRate: Codable, Equatable, Sendable {
+  /// The available static pressure is the equipment's design static pressure
+  /// minus the ``ComponentPressureLoss``es for the project.
+  public let availableStaticPressure: Double
+  /// The calculated design friction rate value.
+  public let value: Double
+  /// Whether the design friction rate is within a valid range.
+  public var hasErrors: Bool { error != nil }
+
+  public init(
+    availableStaticPressure: Double,
+    value: Double
+  ) {
+    self.availableStaticPressure = availableStaticPressure
+    self.value = value
+  }
+
+  /// The error if the design friction rate is out of a valid range.
+  public var error: FrictionRateError? {
+    if value >= 0.18 {
+      return .init(
+        "Friction rate should be lower than 0.18",
+        resolutions: [
+          "Decrease the blower speed",
+          "Decrease the blower size",
+          "Increase the Total Equivalent Length",
+        ]
+      )
+    } else if value <= 0.02 {
+      return .init(
+        "Friction rate should be higher than 0.02",
+        resolutions: [
+          "Increase the blower speed",
+          "Increase the blower size",
+          "Decrease the Total Equivalent Length",
+        ]
+      )
+    }
+    return nil
+  }
+}
+
+/// Represents an error when the ``FrictionRate`` is out of a valid range.
+///
+/// This holds onto the reason for the error as well as possible resolutions.
+public struct FrictionRateError: Error, Equatable, Sendable {
+  /// The reason for the error.
+  public let reason: String
+  /// The possible resolutions to the error.
+  public let resolutions: [String]
+
+  public init(
+    _ reason: String,
+    resolutions: [String]
+  ) {
+    self.reason = reason
+    self.resolutions = resolutions
+  }
+}
+
+#if DEBUG
+  extension FrictionRate {
+    public static let mock = Self(availableStaticPressure: 0.21, value: 0.11)
+  }
+#endif

Sources/ManualDCore/Project.swift

@@ -1,16 +1,29 @@
 import Dependencies
 import Foundation
 
+/// Represents a single duct design project / system.
+///
+/// Holds items such as project name and address.
 public struct Project: Codable, Equatable, Identifiable, Sendable {
-
+  /// The unique ID of the project.
   public let id: UUID
+  /// The name of the project.
   public let name: String
+  /// The street address of the project.
   public let streetAddress: String
+  /// The city of the project.
   public let city: String
+  /// The state of the project.
   public let state: String
+  /// The zip code of the project.
   public let zipCode: String
+  /// The global sensible heat ratio for the project.
+  ///
+  /// **NOTE:** This is used for calculating the sensible cooling load for rooms.
   public let sensibleHeatRatio: Double?
+  /// When the project was created in the database.
   public let createdAt: Date
+  /// When the project was updated in the database.
   public let updatedAt: Date
 
   public init(
@@ -37,14 +50,20 @@ public struct Project: Codable, Equatable, Identifiable, Sendable {
 }
 
 extension Project {
-
+  /// Represents the data needed to create a new project.
   public struct Create: Codable, Equatable, Sendable {
 
+    /// The name of the project.
     public let name: String
+    /// The street address of the project.
     public let streetAddress: String
+    /// The city of the project.
     public let city: String
+    /// The state of the project.
     public let state: String
+    /// The zip code of the project.
     public let zipCode: String
+    /// The global sensible heat ratio for the project.
     public let sensibleHeatRatio: Double?
 
     public init(
@@ -64,11 +83,19 @@ extension Project {
     }
   }
 
+  /// Represents steps that are completed in order to calculate the duct sizes
+  /// for a project.
+  ///
+  /// This is primarily used on the web pages to display errors or color of the
+  /// different steps of a project.
   public struct CompletedSteps: Codable, Equatable, Sendable {
-
+    /// Whether there is ``EquipmentInfo`` for a project.
     public let equipmentInfo: Bool
+    /// Whether there are ``Room``'s for a project.
     public let rooms: Bool
+    /// Whether there are ``EquivalentLength``'s for a project.
     public let equivalentLength: Bool
+    /// Whether there is a ``FrictionRate`` for a project.
     public let frictionRate: Bool
 
     public init(
@@ -84,13 +111,58 @@ extension Project {
     }
   }
 
+  /// Represents project details loaded from the database.
+  ///
+  /// This is generally used to perform duct sizing calculations for the
+  /// project, once all the steps have been completed.
+  public struct Detail: Codable, Equatable, Sendable {
+
+    /// The project.
+    public let project: Project
+    /// The component pressure losses for the project.
+    public let componentLosses: [ComponentPressureLoss]
+    /// The equipment info for the project.
+    public let equipmentInfo: EquipmentInfo
+    /// The equivalent lengths for the project.
+    public let equivalentLengths: [EquivalentLength]
+    /// The rooms in the project.
+    public let rooms: [Room]
+    /// The trunk sizes in the project.
+    public let trunks: [TrunkSize]
+
+    public init(
+      project: Project,
+      componentLosses: [ComponentPressureLoss],
+      equipmentInfo: EquipmentInfo,
+      equivalentLengths: [EquivalentLength],
+      rooms: [Room],
+      trunks: [TrunkSize]
+    ) {
+      self.project = project
+      self.componentLosses = componentLosses
+      self.equipmentInfo = equipmentInfo
+      self.equivalentLengths = equivalentLengths
+      self.rooms = rooms
+      self.trunks = trunks
+    }
+  }
+
+  /// Represents fields that can be updated for a project that has already been created.
+  ///
+  /// Only fields that are supplied get updated in the database.
   public struct Update: Codable, Equatable, Sendable {
 
+    /// The name of the project.
     public let name: String?
+    /// The street address of the project.
     public let streetAddress: String?
+    /// The city of the project.
     public let city: String?
+    /// The state of the project.
     public let state: String?
+    /// The zip code of the project.
     public let zipCode: String?
+    /// The global sensible heat ratio for the project.
     public let sensibleHeatRatio: Double?
 
     public init(
@@ -114,16 +186,22 @@ extension Project {
 #if DEBUG
 
   extension Project {
-    public static let mock = Self(
-      id: UUID(0),
-      name: "Testy McTestface",
-      streetAddress: "1234 Sesame Street",
-      city: "Monroe",
-      state: "OH",
-      zipCode: "55555",
-      createdAt: Date(),
-      updatedAt: Date()
-    )
+
+    public static var mock: Self {
+      @Dependency(\.uuid) var uuid
+      @Dependency(\.date.now) var now
+
+      return .init(
+        id: uuid(),
+        name: "Testy McTestface",
+        streetAddress: "1234 Sesame Street",
+        city: "Monroe",
+        state: "OH",
+        zipCode: "55555",
+        createdAt: now,
+        updatedAt: now
+      )
+    }
   }
 
 #endif

Sources/ManualDCore/Room.swift

@@ -1,16 +1,44 @@
 import Dependencies
 import Foundation
 
+/// Represents a room in a project.
+///
+/// This contains data such as the heating and cooling load for the
+/// room, the number of registers in the room, and any rectangular
+/// duct size calculations stored for the room.
 public struct Room: Codable, Equatable, Identifiable, Sendable {
+
+  /// The unique id of the room.
   public let id: UUID
+
+  /// The project this room is associated with.
   public let projectID: Project.ID
+
+  /// A unique name for the room in the project.
   public let name: String
+
+  /// The heating load required for the room (from Manual-J).
   public let heatingLoad: Double
-  public let coolingTotal: Double
-  public let coolingSensible: Double?
+
+  /// The cooling load required for the room (from Manual-J).
+  public let coolingLoad: CoolingLoad
+
+  /// The number of registers for the room.
   public let registerCount: Int
-  public let rectangularSizes: [DuctSizing.RectangularDuct]?
+
+  /// An optional room that the airflow is delegated to.
+  public let delegatedTo: Room.ID?
+
+  /// The rectangular duct size calculations for a room.
+  ///
+  /// **NOTE:** These are optionally set after the round sizes have been calculate
+  ///           for a room.
+  public let rectangularSizes: [RectangularSize]?
+
+  /// When the room was created in the database.
   public let createdAt: Date
+
+  /// When the room was updated in the database.
   public let updatedAt: Date
 
   public init(
@@ -18,10 +46,10 @@ public struct Room: Codable, Equatable, Identifiable, Sendable {
     projectID: Project.ID,
     name: String,
     heatingLoad: Double,
-    coolingTotal: Double,
-    coolingSensible: Double? = nil,
+    coolingLoad: CoolingLoad,
     registerCount: Int = 1,
-    rectangularSizes: [DuctSizing.RectangularDuct]? = nil,
+    delegatedTo: Room.ID? = nil,
+    rectangularSizes: [RectangularSize]? = nil,
     createdAt: Date,
     updatedAt: Date
   ) {
@@ -29,49 +57,146 @@ public struct Room: Codable, Equatable, Identifiable, Sendable {
     self.projectID = projectID
     self.name = name
     self.heatingLoad = heatingLoad
-    self.coolingTotal = coolingTotal
-    self.coolingSensible = coolingSensible
+    self.coolingLoad = coolingLoad
     self.registerCount = registerCount
+    self.delegatedTo = delegatedTo
     self.rectangularSizes = rectangularSizes
     self.createdAt = createdAt
     self.updatedAt = updatedAt
   }
+
+  /// Represents the cooling load of a room.
+  ///
+  /// Generally only one of the values is provided by a Manual-J room x room
+  /// calculation.
+  ///
+  public struct CoolingLoad: Codable, Equatable, Sendable {
+
+    public let total: Double?
+    public let sensible: Double?
+
+    public init(total: Double? = nil, sensible: Double? = nil) {
+      self.total = total
+      self.sensible = sensible
+    }
+
+    /// Calculates the cooling load based on the shr.
+    ///
+    /// Generally Manual-J room x room loads provide either the total load or the
+    /// sensible load, so this allows us to calculate whichever is not provided.
+    public func ensured(shr: Double) throws -> (total: Double, sensible: Double) {
+      switch (total, sensible) {
+      case (.none, .none):
+        throw CoolingLoadError("Both the total and sensible loads are nil.")
+      case (.some(let total), .some(let sensible)):
+        return (total, sensible)
+      case (.some(let total), .none):
+        return (total, total * shr)
+      case (.none, .some(let sensible)):
+        return (sensible / shr, sensible)
+      }
+
+    }
+  }
 }
 
 extension Room {
-
+  /// Represents the data required to create a new room for a project.
   public struct Create: Codable, Equatable, Sendable {
-    public let projectID: Project.ID
+    /// A unique name for the room in the project.
     public let name: String
+
+    /// The heating load required for the room (from Manual-J).
     public let heatingLoad: Double
-    public let coolingTotal: Double
+
+    /// The total cooling load required for the room (from Manual-J).
+    public let coolingTotal: Double?
+
+    /// An optional sensible cooling load for the room.
     public let coolingSensible: Double?
+
+    /// The number of registers for the room.
     public let registerCount: Int
 
+    /// An optional room that this room delegates it's airflow to.
+    public let delegatedTo: Room.ID?
+
+    public var coolingLoad: Room.CoolingLoad {
+      .init(total: coolingTotal, sensible: coolingSensible)
+    }
+
     public init(
-      projectID: Project.ID,
       name: String,
       heatingLoad: Double,
-      coolingTotal: Double,
+      coolingTotal: Double? = nil,
       coolingSensible: Double? = nil,
-      registerCount: Int = 1
+      registerCount: Int = 1,
+      delegatedTo: Room.ID? = nil
     ) {
-      self.projectID = projectID
       self.name = name
       self.heatingLoad = heatingLoad
       self.coolingTotal = coolingTotal
       self.coolingSensible = coolingSensible
       self.registerCount = registerCount
+      self.delegatedTo = delegatedTo
     }
   }
 
+  public struct CSV: Equatable, Sendable {
+    public let file: Data
+
+    public init(file: Data) {
+      self.file = file
+    }
+  }
+
+  /// Represents a rectangular size calculation that is stored in the
+  /// database for a given room.
+  ///
+  /// These are done after the round duct sizes have been calculated and
+  /// can be used to calculate the equivalent rectangular size for a given run.
+  public struct RectangularSize: Codable, Equatable, Identifiable, Sendable {
+    /// The unique id of the rectangular size.
+    public let id: UUID
+    /// The register the rectangular size is associated with.
+    public let register: Int?
+    /// The height of the rectangular size, the width gets calculated.
+    public let height: Int
+
+    public init(
+      id: UUID = .init(),
+      register: Int? = nil,
+      height: Int,
+    ) {
+      self.id = id
+      self.register = register
+      self.height = height
+    }
+  }
+
+  /// Represents field that can be updated on a room after it's been created in the database.
+  ///
+  /// Onlly fields that are supplied get updated.
   public struct Update: Codable, Equatable, Sendable {
+    /// A unique name for the room in the project.
     public let name: String?
+    /// The heating load required for the room (from Manual-J).
     public let heatingLoad: Double?
+    /// The total cooling load required for the room (from Manual-J).
     public let coolingTotal: Double?
+    /// An optional sensible cooling load for the room.
     public let coolingSensible: Double?
+    /// The number of registers for the room.
     public let registerCount: Int?
-    public let rectangularSizes: [DuctSizing.RectangularDuct]?
+    /// The rectangular duct size calculations for a room.
+    public let rectangularSizes: [RectangularSize]?
+
+    public var coolingLoad: CoolingLoad? {
+      guard coolingTotal != nil || coolingSensible != nil else {
+        return nil
+      }
+      return .init(total: coolingTotal, sensible: coolingSensible)
+    }
 
     public init(
       name: String? = nil,
@@ -89,7 +214,7 @@ extension Room {
     }
 
     public init(
-      rectangularSizes: [DuctSizing.RectangularDuct]
+      rectangularSizes: [RectangularSize]
     ) {
       self.name = nil
       self.heatingLoad = nil
@@ -103,57 +228,119 @@ extension Room {
 
 extension Array where Element == Room {
 
+  /// The sum of heating loads for an array of rooms.
   public var totalHeatingLoad: Double {
     reduce(into: 0) { $0 += $1.heatingLoad }
   }
 
-  public var totalCoolingLoad: Double {
-    reduce(into: 0) { $0 += $1.coolingTotal }
+  /// The sum of total cooling loads for an array of rooms.
+  public func totalCoolingLoad(shr: Double) throws -> Double {
+    try reduce(into: 0) { $0 += try $1.coolingLoad.ensured(shr: shr).total }
   }
 
-  public func totalCoolingSensible(shr: Double) -> Double {
-    reduce(into: 0) {
-      let sensible = $1.coolingSensible ?? ($1.coolingTotal * shr)
-      $0 += sensible
+  /// The sum of sensible cooling loads for an array of rooms.
+  ///
+  /// - Parameters:
+  ///   - shr: The project wide sensible heat ratio.
+  public func totalCoolingSensible(shr: Double) throws -> Double {
+    try reduce(into: 0) {
+      // let sensible = $1.coolingSensible ?? ($1.coolingTotal * shr)
+      $0 += try $1.coolingLoad.ensured(shr: shr).sensible
     }
   }
 }
 
+public struct CoolingLoadError: Error, Equatable, Sendable {
+  public let reason: String
+
+  public init(_ reason: String) {
+    self.reason = reason
+  }
+}
+
 #if DEBUG
 
   extension Room {
-    public static let mocks = [
-      Room(
-        id: UUID(0),
-        projectID: UUID(0),
-        name: "Kitchen",
-        heatingLoad: 12345,
-        coolingTotal: 1234,
-        registerCount: 2,
-        createdAt: Date(),
-        updatedAt: Date()
-      ),
-      Room(
-        id: UUID(1),
-        projectID: UUID(1),
-        name: "Bedroom - 1",
-        heatingLoad: 12345,
-        coolingTotal: 1456,
-        registerCount: 1,
-        createdAt: Date(),
-        updatedAt: Date()
-      ),
-      Room(
-        id: UUID(2),
-        projectID: UUID(2),
-        name: "Family Room",
-        heatingLoad: 12345,
-        coolingTotal: 1673,
-        registerCount: 3,
-        createdAt: Date(),
-        updatedAt: Date()
-      ),
-    ]
+
+    public static func mock(projectID: Project.ID) -> [Self] {
+      @Dependency(\.uuid) var uuid
+      @Dependency(\.date.now) var now
+
+      return [
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Bed-1",
+          heatingLoad: 3913,
+          coolingLoad: .init(total: 2472),
+          // coolingSensible: nil,
+          registerCount: 1,
+          rectangularSizes: nil,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Entry",
+          heatingLoad: 8284,
+          coolingLoad: .init(total: 2916),
+          // coolingSensible: nil,
+          registerCount: 2,
+          rectangularSizes: nil,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Family Room",
+          heatingLoad: 9785,
+          coolingLoad: .init(total: 7446),
+          // coolingSensible: nil,
+          registerCount: 3,
+          rectangularSizes: nil,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Kitchen",
+          heatingLoad: 4518,
+          coolingLoad: .init(total: 5096),
+          // coolingSensible: nil,
+          registerCount: 2,
+          rectangularSizes: nil,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Living Room",
+          heatingLoad: 7553,
+          coolingLoad: .init(total: 6829),
+          // coolingSensible: nil,
+          registerCount: 2,
+          rectangularSizes: nil,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Master",
+          heatingLoad: 8202,
+          coolingLoad: .init(total: 2076),
+          // coolingSensible: nil,
+          registerCount: 2,
+          rectangularSizes: nil,
+          createdAt: now,
+          updatedAt: now
+        ),
+      ]
+    }
   }
 
 #endif

Sources/ManualDCore/Routes/ApiRoute.swift

@@ -1,265 +0,0 @@
-import CasePathsCore
-import Foundation
-@preconcurrency import URLRouting
-
-extension SiteRoute {
-  /// Represents api routes.
-  ///
-  /// The routes return json as opposed to view routes that return html.
-  public enum Api: Sendable, Equatable {
-
-    case project(Self.ProjectRoute)
-    case room(Self.RoomRoute)
-    case equipment(Self.EquipmentRoute)
-    case componentLoss(Self.ComponentLossRoute)
-
-    public static let rootPath = Path {
-      "api"
-      "v1"
-    }
-
-    public static let router = OneOf {
-      Route(.case(Self.project)) {
-        rootPath
-        ProjectRoute.router
-      }
-      Route(.case(Self.room)) {
-        rootPath
-        RoomRoute.router
-      }
-      Route(.case(Self.equipment)) {
-        rootPath
-        EquipmentRoute.router
-      }
-      Route(.case(Self.componentLoss)) {
-        rootPath
-        ComponentLossRoute.router
-      }
-    }
-
-  }
-
-}
-
-extension SiteRoute.Api {
-  public enum ProjectRoute: Sendable, Equatable {
-    case create(Project.Create)
-    case delete(id: Project.ID)
-    case detail(id: Project.ID, route: DetailRoute)
-    case get(id: Project.ID)
-    case index
-
-    static let rootPath = "projects"
-
-    public static let router = OneOf {
-      Route(.case(Self.create)) {
-        Path { rootPath }
-        Method.post
-        Body(.json(Project.Create.self))
-      }
-      Route(.case(Self.delete(id:))) {
-        Path {
-          rootPath
-          Project.ID.parser()
-        }
-        Method.delete
-      }
-      Route(.case(Self.get(id:))) {
-        Path {
-          rootPath
-          Project.ID.parser()
-        }
-        Method.get
-      }
-      Route(.case(Self.index)) {
-        Path { rootPath }
-        Method.get
-      }
-      Route(.case(Self.detail(id:route:))) {
-        Path {
-          rootPath
-          Project.ID.parser()
-        }
-        DetailRoute.router
-      }
-    }
-  }
-}
-
-extension SiteRoute.Api.ProjectRoute {
-  public enum DetailRoute: Equatable, Sendable {
-    case completedSteps
-
-    static let rootPath = "details"
-
-    static let router = OneOf {
-      Route(.case(Self.completedSteps)) {
-        Path {
-          rootPath
-          "completed"
-        }
-        Method.get
-      }
-    }
-  }
-}
-
-extension SiteRoute.Api {
-
-  public enum RoomRoute: Sendable, Equatable {
-    case create(Room.Create)
-    case delete(id: Room.ID)
-    case get(id: Room.ID)
-
-    static let rootPath = "rooms"
-
-    public static let router = OneOf {
-      Route(.case(Self.create)) {
-        Path { rootPath }
-        Method.post
-        Body(.json(Room.Create.self))
-      }
-      Route(.case(Self.delete(id:))) {
-        Path {
-          rootPath
-          Room.ID.parser()
-        }
-        Method.delete
-      }
-      Route(.case(Self.get(id:))) {
-        Path {
-          rootPath
-          Room.ID.parser()
-        }
-        Method.get
-      }
-    }
-  }
-}
-
-extension SiteRoute.Api {
-
-  public enum EquipmentRoute: Sendable, Equatable {
-    case create(EquipmentInfo.Create)
-    case delete(id: EquipmentInfo.ID)
-    case fetch(projectID: Project.ID)
-    case get(id: EquipmentInfo.ID)
-
-    static let rootPath = "equipment"
-
-    public static let router = OneOf {
-      Route(.case(Self.create)) {
-        Path { rootPath }
-        Method.post
-        Body(.json(EquipmentInfo.Create.self))
-      }
-      Route(.case(Self.delete(id:))) {
-        Path {
-          rootPath
-          EquipmentInfo.ID.parser()
-        }
-        Method.delete
-      }
-      Route(.case(Self.fetch(projectID:))) {
-        Path { rootPath }
-        Method.get
-        Query {
-          Field("projectID") { Project.ID.parser() }
-        }
-      }
-      Route(.case(Self.get(id:))) {
-        Path {
-          rootPath
-          EquipmentInfo.ID.parser()
-        }
-        Method.get
-      }
-    }
-  }
-}
-
-extension SiteRoute.Api {
-
-  public enum ComponentLossRoute: Sendable, Equatable {
-    case create(ComponentPressureLoss.Create)
-    case delete(id: ComponentPressureLoss.ID)
-    case fetch(projectID: Project.ID)
-    case get(id: ComponentPressureLoss.ID)
-
-    static let rootPath = "componentLoss"
-
-    public static let router = OneOf {
-      Route(.case(Self.create)) {
-        Path { rootPath }
-        Method.post
-        Body(.json(ComponentPressureLoss.Create.self))
-      }
-      Route(.case(Self.delete(id:))) {
-        Path {
-          rootPath
-          ComponentPressureLoss.ID.parser()
-        }
-        Method.delete
-      }
-      Route(.case(Self.fetch(projectID:))) {
-        Path { rootPath }
-        Method.get
-        Query {
-          Field("projectID") { Project.ID.parser() }
-        }
-      }
-      Route(.case(Self.get(id:))) {
-        Path {
-          rootPath
-          ComponentPressureLoss.ID.parser()
-        }
-        Method.get
-      }
-    }
-  }
-}
-
-extension SiteRoute.Api {
-  public enum EffectiveLengthRoute: Equatable, Sendable {
-    case create(EffectiveLength.Create)
-    case delete(id: EffectiveLength.ID)
-    case fetch(projectID: Project.ID)
-    case get(id: EffectiveLength.ID)
-
-    static let rootPath = "effectiveLength"
-
-    public static let router = OneOf {
-      Route(.case(Self.create)) {
-        Path {
-          rootPath
-          "create"
-        }
-        Method.post
-        Body(.json(EffectiveLength.Create.self))
-      }
-      Route(.case(Self.delete(id:))) {
-        Path {
-          rootPath
-          EffectiveLength.ID.parser()
-        }
-        Method.delete
-      }
-      Route(.case(Self.fetch(projectID:))) {
-        Path {
-          rootPath
-        }
-        Method.get
-        Query {
-          Field("projectID") { Project.ID.parser() }
-        }
-      }
-      Route(.case(Self.get(id:))) {
-        Path {
-          rootPath
-          EffectiveLength.ID.parser()
-        }
-        Method.get
-      }
-    }
-  }
-}

Sources/ManualDCore/Routes/SiteRoute.swift

@@ -5,14 +5,10 @@ import Foundation
 
 public enum SiteRoute: Equatable, Sendable {
 
-  case api(Self.Api)
   case health
   case view(Self.View)
 
   public static let router = OneOf {
-    Route(.case(Self.api)) {
-      SiteRoute.Api.router
-    }
     Route(.case(Self.health)) {
       Path { "health" }
       Method.get

Sources/ManualDCore/Routes/ViewRoute.swift

@@ -146,6 +146,7 @@ extension SiteRoute.View.ProjectRoute {
     case equipment(EquipmentInfoRoute)
     case equivalentLength(EquivalentLengthRoute)
     case frictionRate(FrictionRateRoute)
+    case pdf
     case rooms(RoomRoute)
 
     static let router = OneOf {
@@ -167,6 +168,10 @@ extension SiteRoute.View.ProjectRoute {
       Route(.case(Self.frictionRate)) {
         FrictionRateRoute.router
       }
+      Route(.case(Self.pdf)) {
+        Path { "pdf" }
+        Method.get
+      }
       Route(.case(Self.rooms)) {
         RoomRoute.router
       }
@@ -183,6 +188,7 @@ extension SiteRoute.View.ProjectRoute {
   }
 
   public enum RoomRoute: Equatable, Sendable {
+    case csv(Room.CSV)
     case delete(id: Room.ID)
     case index
     case submit(Room.Create)
@@ -192,6 +198,23 @@ extension SiteRoute.View.ProjectRoute {
     static let rootPath = "rooms"
 
     public static let router = OneOf {
+      Route(.case(Self.csv)) {
+        Path {
+          rootPath
+          "csv"
+        }
+        Headers {
+          Field("Content-Type") { "multipart/form-data" }
+        }
+        Method.post
+        Body().map(.memberwise(Room.CSV.init))
+        // Body {
+        //   FormData {
+        //
+        //   }
+        //   .map(.memberwise(Room.CSV.init))
+        // }
+      }
       Route(.case(Self.delete)) {
         Path {
           rootPath
@@ -210,14 +233,18 @@ extension SiteRoute.View.ProjectRoute {
         Method.post
         Body {
           FormData {
-            Field("projectID") { Project.ID.parser() }
             Field("name", .string)
             Field("heatingLoad") { Double.parser() }
-            Field("coolingTotal") { Double.parser() }
             Optionally {
-              Field("coolingSensible", default: nil) { Double.parser() }
+              Field("coolingTotal") { Double.parser() }
+            }
+            Optionally {
+              Field("coolingSensible") { Double.parser() }
             }
             Field("registerCount") { Digits() }
+            Optionally {
+              Field("delegatedTo") { Room.ID.parser() }
+            }
           }
           .map(.memberwise(Room.Create.init))
         }
@@ -389,11 +416,11 @@ extension SiteRoute.View.ProjectRoute {
   }
 
   public enum EquivalentLengthRoute: Equatable, Sendable {
-    case delete(id: EffectiveLength.ID)
-    case field(FieldType, style: EffectiveLength.EffectiveLengthType? = nil)
+    case delete(id: EquivalentLength.ID)
+    case field(FieldType, style: EquivalentLength.EffectiveLengthType? = nil)
     case index
     case submit(FormStep)
-    case update(EffectiveLength.ID, StepThree)
+    case update(EquivalentLength.ID, StepThree)
 
     static let rootPath = "effective-lengths"
 
@@ -401,7 +428,7 @@ extension SiteRoute.View.ProjectRoute {
       Route(.case(Self.delete(id:))) {
         Path {
           rootPath
-          EffectiveLength.ID.parser()
+          EquivalentLength.ID.parser()
         }
         Method.delete
       }
@@ -419,7 +446,7 @@ extension SiteRoute.View.ProjectRoute {
           Field("type") { FieldType.parser() }
           Optionally {
             Field("style", default: nil) {
-              EffectiveLength.EffectiveLengthType.parser()
+              EquivalentLength.EffectiveLengthType.parser()
             }
           }
         }
@@ -432,16 +459,16 @@ extension SiteRoute.View.ProjectRoute {
       Route(.case(Self.update)) {
         Path {
           rootPath
-          EffectiveLength.ID.parser()
+          EquivalentLength.ID.parser()
         }
         Method.patch
         Body {
           FormData {
             Optionally {
-              Field("id", default: nil) { EffectiveLength.ID.parser() }
+              Field("id", default: nil) { EquivalentLength.ID.parser() }
             }
             Field("name", .string)
-            Field("type") { EffectiveLength.EffectiveLengthType.parser() }
+            Field("type") { EquivalentLength.EffectiveLengthType.parser() }
             Many {
               Field("straightLengths") {
                 Int.parser()
@@ -485,10 +512,10 @@ extension SiteRoute.View.ProjectRoute {
           Body {
             FormData {
               Optionally {
-                Field("id", default: nil) { EffectiveLength.ID.parser() }
+                Field("id", default: nil) { EquivalentLength.ID.parser() }
               }
               Field("name", .string)
-              Field("type") { EffectiveLength.EffectiveLengthType.parser() }
+              Field("type") { EquivalentLength.EffectiveLengthType.parser() }
             }
             .map(.memberwise(StepOne.init))
           }
@@ -500,10 +527,10 @@ extension SiteRoute.View.ProjectRoute {
           Body {
             FormData {
               Optionally {
-                Field("id", default: nil) { EffectiveLength.ID.parser() }
+                Field("id", default: nil) { EquivalentLength.ID.parser() }
               }
               Field("name", .string)
-              Field("type") { EffectiveLength.EffectiveLengthType.parser() }
+              Field("type") { EquivalentLength.EffectiveLengthType.parser() }
               Many {
                 Field("straightLengths") {
                   Int.parser()
@@ -520,10 +547,10 @@ extension SiteRoute.View.ProjectRoute {
           Body {
             FormData {
               Optionally {
-                Field("id", default: nil) { EffectiveLength.ID.parser() }
+                Field("id", default: nil) { EquivalentLength.ID.parser() }
               }
               Field("name", .string)
-              Field("type") { EffectiveLength.EffectiveLengthType.parser() }
+              Field("type") { EquivalentLength.EffectiveLengthType.parser() }
               Many {
                 Field("straightLengths") {
                   Int.parser()
@@ -562,22 +589,22 @@ extension SiteRoute.View.ProjectRoute {
     }
 
     public struct StepOne: Codable, Equatable, Sendable {
-      public let id: EffectiveLength.ID?
+      public let id: EquivalentLength.ID?
       public let name: String
-      public let type: EffectiveLength.EffectiveLengthType
+      public let type: EquivalentLength.EffectiveLengthType
     }
 
     public struct StepTwo: Codable, Equatable, Sendable {
 
-      public let id: EffectiveLength.ID?
+      public let id: EquivalentLength.ID?
       public let name: String
-      public let type: EffectiveLength.EffectiveLengthType
+      public let type: EquivalentLength.EffectiveLengthType
       public let straightLengths: [Int]
 
       public init(
-        id: EffectiveLength.ID? = nil,
+        id: EquivalentLength.ID? = nil,
         name: String,
-        type: EffectiveLength.EffectiveLengthType,
+        type: EquivalentLength.EffectiveLengthType,
         straightLengths: [Int]
       ) {
         self.id = id
@@ -588,9 +615,9 @@ extension SiteRoute.View.ProjectRoute {
     }
 
     public struct StepThree: Codable, Equatable, Sendable {
-      public let id: EffectiveLength.ID?
+      public let id: EquivalentLength.ID?
       public let name: String
-      public let type: EffectiveLength.EffectiveLengthType
+      public let type: EquivalentLength.EffectiveLengthType
       public let straightLengths: [Int]
       public let groupGroups: [Int]
       public let groupLetters: [String]
@@ -627,7 +654,7 @@ extension SiteRoute.View.ProjectRoute {
         }
         Method.delete
         Query {
-          Field("rectangularSize") { DuctSizing.RectangularDuct.ID.parser() }
+          Field("rectangularSize") { Room.RectangularSize.ID.parser() }
           Field("register") { Int.parser() }
         }
         .map(.memberwise(DeleteRectangularDuct.init))
@@ -642,7 +669,7 @@ extension SiteRoute.View.ProjectRoute {
         Body {
           FormData {
             Optionally {
-              Field("id") { DuctSizing.RectangularDuct.ID.parser() }
+              Field("id") { Room.RectangularSize.ID.parser() }
             }
             Field("register") { Int.parser() }
             Field("height") { Int.parser() }
@@ -658,19 +685,19 @@ extension SiteRoute.View.ProjectRoute {
 
     public struct DeleteRectangularDuct: Equatable, Sendable {
 
-      public let rectangularSizeID: DuctSizing.RectangularDuct.ID
+      public let rectangularSizeID: Room.RectangularSize.ID
       public let register: Int
 
-      public init(rectangularSizeID: DuctSizing.RectangularDuct.ID, register: Int) {
+      public init(rectangularSizeID: Room.RectangularSize.ID, register: Int) {
         self.rectangularSizeID = rectangularSizeID
         self.register = register
       }
     }
 
     public enum TrunkRoute: Equatable, Sendable {
-      case delete(DuctSizing.TrunkSize.ID)
+      case delete(TrunkSize.ID)
       case submit(TrunkSizeForm)
-      case update(DuctSizing.TrunkSize.ID, TrunkSizeForm)
+      case update(TrunkSize.ID, TrunkSizeForm)
 
       public static let rootPath = "trunk"
 
@@ -678,7 +705,7 @@ extension SiteRoute.View.ProjectRoute {
         Route(.case(Self.delete)) {
           Path {
             rootPath
-            DuctSizing.TrunkSize.ID.parser()
+            TrunkSize.ID.parser()
           }
           Method.delete
         }
@@ -690,7 +717,7 @@ extension SiteRoute.View.ProjectRoute {
           Body {
             FormData {
               Field("projectID") { Project.ID.parser() }
-              Field("type") { DuctSizing.TrunkSize.TrunkType.parser() }
+              Field("type") { TrunkSize.TrunkType.parser() }
               Optionally {
                 Field("height") { Int.parser() }
 
@@ -708,13 +735,13 @@ extension SiteRoute.View.ProjectRoute {
         Route(.case(Self.update)) {
           Path {
             rootPath
-            DuctSizing.TrunkSize.ID.parser()
+            TrunkSize.ID.parser()
           }
           Method.patch
           Body {
             FormData {
               Field("projectID") { Project.ID.parser() }
-              Field("type") { DuctSizing.TrunkSize.TrunkType.parser() }
+              Field("type") { TrunkSize.TrunkType.parser() }
               Optionally {
                 Field("height") { Int.parser() }
               }
@@ -732,17 +759,43 @@ extension SiteRoute.View.ProjectRoute {
     }
 
     public struct RoomRectangularForm: Equatable, Sendable {
-      public let id: DuctSizing.RectangularDuct.ID?
+
+      public let id: Room.RectangularSize.ID?
       public let register: Int
       public let height: Int
+
+      public init(
+        id: Room.RectangularSize.ID? = nil,
+        register: Int,
+        height: Int
+      ) {
+        self.id = id
+        self.register = register
+        self.height = height
+      }
     }
 
     public struct TrunkSizeForm: Equatable, Sendable {
+
       public let projectID: Project.ID
-      public let type: DuctSizing.TrunkSize.TrunkType
+      public let type: TrunkSize.TrunkType
       public let height: Int?
       public let name: String?
       public let rooms: [String]
+
+      public init(
+        projectID: Project.ID,
+        type: TrunkSize.TrunkType,
+        height: Int? = nil,
+        name: String? = nil,
+        rooms: [String]
+      ) {
+        self.projectID = projectID
+        self.type = type
+        self.height = height
+        self.name = name
+        self.rooms = rooms
+      }
     }
   }
 }

Sources/ManualDCore/Theme.swift

@@ -1,5 +1,6 @@
 import Foundation
 
+/// Represents supported color themes for the website.
 public enum Theme: String, CaseIterable, Codable, Equatable, Sendable {
   case aqua
   case cupcake
@@ -13,6 +14,7 @@ public enum Theme: String, CaseIterable, Codable, Equatable, Sendable {
   case retro
   case synthwave
 
+  /// Represents dark color themes.
   public static let darkThemes = [
     Self.aqua,
     Self.cyberpunk,
@@ -22,6 +24,7 @@ public enum Theme: String, CaseIterable, Codable, Equatable, Sendable {
     Self.synthwave,
   ]
 
+  /// Represents light color themes.
   public static let lightThemes = [
     Self.cupcake,
     Self.light,

Sources/ManualDCore/TrunkSize.swift

@@ -0,0 +1,149 @@
+import Dependencies
+import Foundation
+
+/// Represents trunk calculations for a project.
+///
+/// These are used to size trunk ducts / runs for multiple rooms or registers.
+public struct TrunkSize: Codable, Equatable, Identifiable, Sendable {
+
+  /// The unique identifier of the trunk size.
+  public let id: UUID
+  /// The project the trunk size is for.
+  public let projectID: Project.ID
+  /// The type of the trunk size (supply or return).
+  public let type: TrunkType
+  /// The rooms / registers associated with the trunk size.
+  public let rooms: [RoomProxy]
+  /// An optional rectangular height used to calculate the equivalent
+  /// rectangular size of the trunk.
+  public let height: Int?
+  /// An optional name / label used for identifying the trunk.
+  public let name: String?
+
+  public init(
+    id: UUID,
+    projectID: Project.ID,
+    type: TrunkType,
+    rooms: [RoomProxy],
+    height: Int? = nil,
+    name: String? = nil
+  ) {
+    self.id = id
+    self.projectID = projectID
+    self.type = type
+    self.rooms = rooms
+    self.height = height
+    self.name = name
+  }
+}
+
+extension TrunkSize {
+  /// Represents the data needed to create a new ``TrunkSize`` in the database.
+  public struct Create: Codable, Equatable, Sendable {
+
+    /// The project the trunk size is for.
+    public let projectID: Project.ID
+    /// The type of the trunk size (supply or return).
+    public let type: TrunkType
+    /// The rooms / registers associated with the trunk size.
+    public let rooms: [Room.ID: [Int]]
+    /// An optional rectangular height used to calculate the equivalent
+    /// rectangular size of the trunk.
+    public let height: Int?
+    /// An optional name / label used for identifying the trunk.
+    public let name: String?
+
+    public init(
+      projectID: Project.ID,
+      type: TrunkType,
+      rooms: [Room.ID: [Int]],
+      height: Int? = nil,
+      name: String? = nil
+    ) {
+      self.projectID = projectID
+      self.type = type
+      self.rooms = rooms
+      self.height = height
+      self.name = name
+    }
+  }
+
+  /// Represents the fields that can be updated on a ``TrunkSize`` in the database.
+  ///
+  /// Only supplied fields are updated.
+  public struct Update: Codable, Equatable, Sendable {
+
+    /// The type of the trunk size (supply or return).
+    public let type: TrunkType?
+    /// The rooms / registers associated with the trunk size.
+    public let rooms: [Room.ID: [Int]]?
+    /// An optional rectangular height used to calculate the equivalent
+    /// rectangular size of the trunk.
+    public let height: Int?
+    /// An optional name / label used for identifying the trunk.
+    public let name: String?
+
+    public init(
+      type: TrunkType? = nil,
+      rooms: [Room.ID: [Int]]? = nil,
+      height: Int? = nil,
+      name: String? = nil
+    ) {
+      self.type = type
+      self.rooms = rooms
+      self.height = height
+      self.name = name
+    }
+  }
+
+  /// A container / wrapper around a ``Room`` that is used with a ``TrunkSize``.
+  ///
+  /// This is needed because a room can have multiple registers and it is possible
+  /// that a trunk does not serve all registers in that room.
+  @dynamicMemberLookup
+  public struct RoomProxy: Codable, Equatable, Sendable {
+
+    /// The room associated with the ``TrunkSize``.
+    public let room: Room
+    /// The specific room registers associated with the ``TrunkSize``.
+    public let registers: [Int]
+
+    public init(room: Room, registers: [Int]) {
+      self.room = room
+      self.registers = registers
+    }
+
+    public subscript<T>(dynamicMember keyPath: KeyPath<Room, T>) -> T {
+      room[keyPath: keyPath]
+    }
+  }
+
+  /// Represents the type of a ``TrunkSize``, either supply or return.
+  public enum TrunkType: String, CaseIterable, Codable, Equatable, Sendable {
+    case `return`
+    case supply
+
+    public static let allCases = [Self.supply, .return]
+  }
+}
+
+#if DEBUG
+  extension TrunkSize {
+    public static func mock(projectID: Project.ID, rooms: [Room]) -> [Self] {
+      @Dependency(\.uuid) var uuid
+
+      let allRooms = rooms.reduce(into: [TrunkSize.RoomProxy]()) { array, room in
+        var registers = [Int]()
+        for n in 1...room.registerCount {
+          registers.append(n)
+        }
+        array.append(.init(room: room, registers: registers))
+      }
+
+      return [
+        .init(id: uuid(), projectID: projectID, type: .supply, rooms: allRooms),
+        .init(id: uuid(), projectID: projectID, type: .return, rooms: allRooms),
+      ]
+    }
+  }
+#endif

Sources/ManualDCore/User.swift

@@ -1,12 +1,17 @@
 import Dependencies
 import Foundation
 
-// FIX: Remove username.
+/// Represents a user of the site.
+///
 public struct User: Codable, Equatable, Identifiable, Sendable {
 
+  /// The unique id of the user.
   public let id: UUID
+  /// The user's email address.
   public let email: String
+  /// When the user was created in the database.
   public let createdAt: Date
+  /// When the user was updated in the database.
   public let updatedAt: Date
 
   public init(
@@ -23,10 +28,14 @@ public struct User: Codable, Equatable, Identifiable, Sendable {
 }
 
 extension User {
+  /// Represents the data required to create a new user.
   public struct Create: Codable, Equatable, Sendable {
 
+    /// The user's email address.
     public let email: String
+    /// The password for the user.
     public let password: String
+    /// The password confirmation, must match the password.
     public let confirmPassword: String
 
     public init(
@@ -40,9 +49,13 @@ extension User {
     }
   }
 
+  /// Represents data required to login a user.
   public struct Login: Codable, Equatable, Sendable {
+    /// The user's email address.
     public let email: String
+    /// The password for the user.
     public let password: String
+    /// An optional page / route to navigate to after logging in the user.
     public let next: String?
 
     public init(email: String, password: String, next: String? = nil) {
@@ -52,10 +65,13 @@ extension User {
     }
   }
 
+  /// Represents a user session token, for a logged in user.
   public struct Token: Codable, Equatable, Identifiable, Sendable {
-
+    /// The unique id of the token.
     public let id: UUID
+    /// The user id the token is for.
     public let userID: User.ID
+    /// The token value.
     public let value: String
 
     public init(id: UUID, userID: User.ID, value: String) {
@@ -65,3 +81,15 @@ extension User {
     }
   }
 }
+
+#if DEBUG
+
+  extension User {
+    public static var mock: Self {
+      @Dependency(\.uuid) var uuid
+      @Dependency(\.date.now) var now
+      return .init(id: uuid(), email: "testy@example.com", createdAt: now, updatedAt: now)
+    }
+  }
+
+#endif

Sources/ManualDCore/UserProfile.swift

@@ -1,19 +1,33 @@
+import Dependencies
 import Foundation
 
 extension User {
+  /// Represents a user's profile. Which contains extra information about a user of the site.
   public struct Profile: Codable, Equatable, Identifiable, Sendable {
 
+    /// The unique id of the profile
     public let id: UUID
+    /// The user id the profile is for.
     public let userID: User.ID
+    /// The user's first name.
     public let firstName: String
+    /// The user's last name.
     public let lastName: String
+    /// The user's company name.
     public let companyName: String
+    /// The user's street address.
     public let streetAddress: String
+    /// The user's city.
     public let city: String
+    /// The user's state.
     public let state: String
+    /// The user's zip code.
     public let zipCode: String
+    /// An optional theme that the user prefers.
     public let theme: Theme?
+    /// When the profile was created in the database.
     public let createdAt: Date
+    /// When the profile was updated in the database.
     public let updatedAt: Date
 
     public init(
@@ -48,15 +62,25 @@ extension User {
 
 extension User.Profile {
 
+  /// Represents the data required to create a user profile.
   public struct Create: Codable, Equatable, Sendable {
+    /// The user id the profile is for.
     public let userID: User.ID
+    /// The user's first name.
     public let firstName: String
+    /// The user's last name.
     public let lastName: String
+    /// The user's company name.
     public let companyName: String
+    /// The user's street address.
     public let streetAddress: String
+    /// The user's city.
     public let city: String
+    /// The user's state.
     public let state: String
+    /// The user's zip code.
     public let zipCode: String
+    /// An optional theme that the user prefers.
     public let theme: Theme?
 
     public init(
@@ -82,14 +106,25 @@ extension User.Profile {
     }
   }
 
+  /// Represents the fields that can be updated on a user's profile.
+  ///
+  /// Only fields that are supplied get updated.
   public struct Update: Codable, Equatable, Sendable {
+    /// The user's first name.
     public let firstName: String?
+    /// The user's last name.
     public let lastName: String?
+    /// The user's company name.
     public let companyName: String?
+    /// The user's street address.
     public let streetAddress: String?
+    /// The user's city.
     public let city: String?
+    /// The user's state.
     public let state: String?
+    /// The user's zip code.
     public let zipCode: String?
+    /// An optional theme that the user prefers.
     public let theme: Theme?
 
     public init(
@@ -113,3 +148,27 @@ extension User.Profile {
     }
   }
 }
+
+#if DEBUG
+  extension User.Profile {
+    public static func mock(userID: User.ID) -> Self {
+      @Dependency(\.uuid) var uuid
+      @Dependency(\.date.now) var now
+
+      return .init(
+        id: uuid(),
+        userID: userID,
+        firstName: "Testy",
+        lastName: "McTestface",
+        companyName: "Acme Co.",
+        streetAddress: "1234 Sesame St",
+        city: "Monroe",
+        state: "OH",
+        zipCode: "55555",
+        createdAt: now,
+        updatedAt: now
+      )
+
+    }
+  }
+#endif

Sources/PdfClient/Interface.swift

@@ -0,0 +1,168 @@
+import Dependencies
+import DependenciesMacros
+import Elementary
+import EnvVars
+import FileClient
+import Foundation
+import ManualDCore
+
+extension DependencyValues {
+
+  /// Access the pdf client dependency that can be used to generate pdf's for
+  /// a project.
+  public var pdfClient: PdfClient {
+    get { self[PdfClient.self] }
+    set { self[PdfClient.self] = newValue }
+  }
+}
+
+@DependencyClient
+public struct PdfClient: Sendable {
+  /// Generate the html used to convert to pdf for a project.
+  public var html: @Sendable (Request) async throws -> (any HTML & Sendable)
+
+  /// Converts the generated html to a pdf.
+  ///
+  /// **NOTE:** This is generally not used directly, instead use the overload that accepts a request,
+  ///           which generates the html and does the conversion all in one step.
+  public var generatePdf: @Sendable (Project.ID, any HTML & Sendable) async throws -> Response
+
+  /// Generate a pdf for the given project request.
+  ///
+  /// - Parameters:
+  ///   - request: The project data used to generate the pdf.
+  public func generatePdf(request: Request) async throws -> Response {
+    try await self.generatePdf(request.project.id, html(request))
+  }
+
+}
+
+extension PdfClient: DependencyKey {
+  public static let testValue = Self()
+
+  public static let liveValue = Self(
+    html: { request in
+      request.toHTML()
+    },
+    generatePdf: { projectID, html in
+      @Dependency(\.fileClient) var fileClient
+      @Dependency(\.environment) var environment
+
+      let baseUrl = "/tmp/\(projectID)"
+      try await fileClient.writeFile(html.render(), "\(baseUrl).html")
+
+      let process = Process()
+      let standardInput = Pipe()
+      let standardOutput = Pipe()
+      process.standardInput = standardInput
+      process.standardOutput = standardOutput
+      process.executableURL = URL(fileURLWithPath: environment.pandocPath)
+      process.arguments = [
+        "\(baseUrl).html",
+        "--pdf-engine=\(environment.pdfEngine)",
+        "--from=html",
+        "--css=Public/css/pdf.css",
+        "--output=\(baseUrl).pdf",
+      ]
+      try process.run()
+      process.waitUntilExit()
+
+      return .init(htmlPath: "\(baseUrl).html", pdfPath: "\(baseUrl).pdf")
+
+    }
+  )
+}
+
+extension PdfClient {
+  /// Represents the data required to generate a pdf for a given project.
+  public struct Request: Codable, Equatable, Sendable {
+
+    /// The project we're generating a pdf for.
+    public let project: Project
+    /// The rooms in the project.
+    public let rooms: [Room]
+    /// The component pressure losses for the project.
+    public let componentLosses: [ComponentPressureLoss]
+    /// The calculated duct sizes for the project.
+    public let ductSizes: DuctSizes
+    /// The equipment information for the project.
+    public let equipmentInfo: EquipmentInfo
+    /// The max supply equivalent length for the project.
+    public let maxSupplyTEL: EquivalentLength
+    /// The max return equivalent length for the project.
+    public let maxReturnTEL: EquivalentLength
+    /// The calculated design friction rate for the project.
+    public let frictionRate: FrictionRate
+    /// The project wide sensible heat ratio.
+    public let projectSHR: Double
+
+    var totalEquivalentLength: Double {
+      maxReturnTEL.totalEquivalentLength + maxSupplyTEL.totalEquivalentLength
+    }
+
+    public init(
+      project: Project,
+      rooms: [Room],
+      componentLosses: [ComponentPressureLoss],
+      ductSizes: DuctSizes,
+      equipmentInfo: EquipmentInfo,
+      maxSupplyTEL: EquivalentLength,
+      maxReturnTEL: EquivalentLength,
+      frictionRate: FrictionRate,
+      projectSHR: Double
+    ) {
+      self.project = project
+      self.rooms = rooms
+      self.componentLosses = componentLosses
+      self.ductSizes = ductSizes
+      self.equipmentInfo = equipmentInfo
+      self.maxSupplyTEL = maxSupplyTEL
+      self.maxReturnTEL = maxReturnTEL
+      self.frictionRate = frictionRate
+      self.projectSHR = projectSHR
+    }
+  }
+
+  /// Represents the response after generating a pdf.
+  public struct Response: Equatable, Sendable {
+
+    /// The path to the html file used to generate the pdf from.
+    public let htmlPath: String
+    /// The path to the pdf file.
+    public let pdfPath: String
+
+    public init(htmlPath: String, pdfPath: String) {
+      self.htmlPath = htmlPath
+      self.pdfPath = pdfPath
+    }
+  }
+}
+
+#if DEBUG
+  extension PdfClient.Request {
+    public static func mock(project: Project = .mock) -> Self {
+      let rooms = Room.mock(projectID: project.id)
+      let trunks = TrunkSize.mock(projectID: project.id, rooms: rooms)
+      let equipmentInfo = EquipmentInfo.mock(projectID: project.id)
+      let equivalentLengths = EquivalentLength.mock(projectID: project.id)
+
+      return .init(
+        project: project,
+        rooms: rooms,
+        componentLosses: ComponentPressureLoss.mock(projectID: project.id),
+        ductSizes: .mock(
+          equipmentInfo: equipmentInfo,
+          rooms: rooms,
+          trunks: trunks,
+          shr: project.sensibleHeatRatio ?? 0.83
+        ),
+        equipmentInfo: equipmentInfo,
+        maxSupplyTEL: equivalentLengths.first { $0.type == .supply }!,
+        maxReturnTEL: equivalentLengths.first { $0.type == .return }!,
+        frictionRate: .mock,
+        projectSHR: 0.83
+      )
+
+    }
+  }
+#endif

Sources/PdfClient/Request+html.swift

@@ -0,0 +1,107 @@
+import Elementary
+import ManualDCore
+
+extension PdfClient.Request {
+
+  func toHTML() -> (some HTML & Sendable) {
+    PdfDocument(request: self)
+  }
+}
+
+struct PdfDocument: HTMLDocument {
+
+  let title = "Duct Calc"
+  let lang = "en"
+  let request: PdfClient.Request
+
+  var head: some HTML {
+    link(.rel(.stylesheet), .href("/css/pdf.css"))
+  }
+
+  var body: some HTML {
+    div {
+      // h1(.class("headline")) { "Duct Calc" }
+
+      h2 { "Project" }
+
+      div(.class("flex")) {
+        ProjectTable(project: request.project)
+        // HACK:
+        table {}
+      }
+
+      div(.class("section")) {
+        div(.class("flex")) {
+          h2 { "Equipment" }
+          h2 { "Friction Rate" }
+        }
+        div(.class("flex")) {
+          div(.class("container")) {
+            div(.class("table-container")) {
+              EquipmentTable(title: "Equipment", equipmentInfo: request.equipmentInfo)
+            }
+            div(.class("table-container")) {
+              FrictionRateTable(
+                title: "Friction Rate",
+                componentLosses: request.componentLosses,
+                frictionRate: request.frictionRate,
+                totalEquivalentLength: request.totalEquivalentLength,
+                displayTotals: false
+              )
+            }
+          }
+        }
+        if let error = request.frictionRate.error {
+          div(.class("section")) {
+            p(.class("error")) {
+              error.reason
+              for resolution in error.resolutions {
+                br()
+                "  * \(resolution)"
+              }
+            }
+          }
+        }
+      }
+      div(.class("section")) {
+        h2 { "Duct Sizes" }
+        DuctSizesTable(rooms: request.ductSizes.rooms)
+          .attributes(.class("w-full"))
+      }
+
+      div(.class("section")) {
+        h2 { "Supply Trunk / Run Outs" }
+        TrunkTable(sizes: request.ductSizes, type: .supply)
+          .attributes(.class("w-full"))
+      }
+
+      div(.class("section")) {
+        h2 { "Return Trunk / Run Outs" }
+        TrunkTable(sizes: request.ductSizes, type: .return)
+          .attributes(.class("w-full"))
+      }
+
+      div(.class("section")) {
+        h2 { "Total Equivalent Lengths" }
+        EffectiveLengthsTable(effectiveLengths: [
+          request.maxSupplyTEL, request.maxReturnTEL,
+        ])
+        .attributes(.class("w-full"))
+      }
+
+      div(.class("section")) {
+        h2 { "Register Detail" }
+        RegisterDetailTable(rooms: request.ductSizes.rooms)
+          .attributes(.class("w-full"))
+      }
+
+      div(.class("section")) {
+        h2 { "Room Detail" }
+        RoomsTable(rooms: request.rooms, projectSHR: request.projectSHR)
+          .attributes(.class("w-full"))
+      }
+    }
+
+  }
+
+}

Sources/PdfClient/Views/DuctSizeTable.swift

@@ -0,0 +1,37 @@
+import Elementary
+import ManualDCore
+
+struct DuctSizesTable: HTML, Sendable {
+  let rooms: [DuctSizes.RoomContainer]
+
+  var body: some HTML<HTMLTag.table> {
+    table {
+      thead {
+        tr(.class("bg-green")) {
+          th { "Name" }
+          th { "Dsn CFM" }
+          th { "Round Size" }
+          th { "Velocity" }
+          th { "Final Size" }
+          th { "Flex Size" }
+          th { "Height" }
+          th { "Width" }
+        }
+      }
+      tbody {
+        for row in rooms {
+          tr {
+            td { row.roomName }
+            td { row.designCFM.value.string(digits: 0) }
+            td { row.roundSize.string() }
+            td { row.velocity.string() }
+            td { row.flexSize.string() }
+            td { row.finalSize.string() }
+            td { row.ductSize.height?.string() ?? "" }
+            td { row.width?.string() ?? "" }
+          }
+        }
+      }
+    }
+  }
+}

Sources/PdfClient/Views/EquipmentTable.swift

@@ -0,0 +1,38 @@
+import Elementary
+import ManualDCore
+
+struct EquipmentTable: HTML, Sendable {
+  let title: String?
+  let equipmentInfo: EquipmentInfo
+
+  init(title: String? = nil, equipmentInfo: EquipmentInfo) {
+    self.title = title
+    self.equipmentInfo = equipmentInfo
+  }
+
+  var body: some HTML<HTMLTag.table> {
+
+    table {
+      thead {
+        tr(.class("bg-green")) {
+          th { title ?? "" }
+          th(.class("justify-end")) { "Value" }
+        }
+      }
+      tbody {
+        tr {
+          td { "Static Pressure" }
+          td(.class("justify-end")) { equipmentInfo.staticPressure.string() }
+        }
+        tr {
+          td { "Heating CFM" }
+          td(.class("justify-end")) { equipmentInfo.heatingCFM.string() }
+        }
+        tr {
+          td { "Cooling CFM" }
+          td(.class("justify-end")) { equipmentInfo.coolingCFM.string() }
+        }
+      }
+    }
+  }
+}

Sources/PdfClient/Views/EquivalentLengthTable.swift

@@ -0,0 +1,68 @@
+import Elementary
+import ManualDCore
+
+struct EffectiveLengthsTable: HTML, Sendable {
+  let effectiveLengths: [EquivalentLength]
+
+  var body: some HTML<HTMLTag.table> {
+    table {
+      thead {
+        tr(.class("bg-green")) {
+          th { "Name" }
+          th { "Type" }
+          th { "Straight Lengths" }
+          th { "Groups" }
+          th { "Total" }
+        }
+      }
+      tbody {
+        for row in effectiveLengths {
+          tr {
+            td { row.name }
+            td { row.type.rawValue }
+            td {
+              ul {
+                for length in row.straightLengths {
+                  li { length.string() }
+                }
+              }
+            }
+            td {
+              EffectiveLengthGroupTable(groups: row.groups)
+                .attributes(.class("w-full"))
+            }
+            td { row.totalEquivalentLength.string(digits: 0) }
+          }
+        }
+      }
+    }
+  }
+
+}
+
+struct EffectiveLengthGroupTable: HTML, Sendable {
+  let groups: [EquivalentLength.FittingGroup]
+
+  var body: some HTML<HTMLTag.table> {
+    table {
+      thead {
+        tr(.class("effectiveLengthGroupHeader")) {
+          th { "Name" }
+          th { "Length" }
+          th { "Quantity" }
+          th { "Total" }
+        }
+      }
+      tbody {
+        for row in groups {
+          tr {
+            td { "\(row.group)-\(row.letter)" }
+            td { row.value.string(digits: 0) }
+            td { row.quantity.string() }
+            td { (row.value * Double(row.quantity)).string(digits: 0) }
+          }
+        }
+      }
+    }
+  }
+}

Sources/PdfClient/Views/FrictionRateTable.swift

@@ -0,0 +1,47 @@
+import Elementary
+import ManualDCore
+
+struct FrictionRateTable: HTML, Sendable {
+  let title: String?
+  let componentLosses: [ComponentPressureLoss]
+  let frictionRate: FrictionRate
+  let totalEquivalentLength: Double
+  let displayTotals: Bool
+
+  var sortedLosses: [ComponentPressureLoss] {
+    componentLosses.sorted { $0.value > $1.value }
+  }
+
+  var body: some HTML<HTMLTag.table> {
+    table {
+      thead {
+        tr(.class("bg-green")) {
+          th { title ?? "" }
+          th(.class("justify-end")) { "Value" }
+        }
+      }
+      tbody {
+        for row in sortedLosses {
+          tr {
+            td { row.name }
+            td(.class("justify-end")) { row.value.string() }
+          }
+        }
+        if displayTotals {
+          tr {
+            td(.class("label justify-end")) { "Available Static Pressure" }
+            td(.class("justify-end")) { frictionRate.availableStaticPressure.string() }
+          }
+          tr {
+            td(.class("label justify-end")) { "Total Equivalent Length" }
+            td(.class("justify-end")) { totalEquivalentLength.string() }
+          }
+          tr {
+            td(.class("label justify-end")) { "Friction Rate Design Value" }
+            td(.class("justify-end")) { frictionRate.value.string() }
+          }
+        }
+      }
+    }
+  }
+}

Sources/PdfClient/Views/ProjectTable.swift

@@ -0,0 +1,33 @@
+import Elementary
+import ManualDCore
+
+struct ProjectTable: HTML, Sendable {
+  let project: Project
+
+  var body: some HTML<HTMLTag.table> {
+    table {
+      tbody {
+        tr {
+          td(.class("label")) { "Name" }
+          td { project.name }
+        }
+        tr {
+          td(.class("label")) { "Address" }
+          td {
+            p {
+              project.streetAddress
+              br()
+              project.cityStateZipString
+            }
+          }
+        }
+      }
+    }
+  }
+}
+
+extension Project {
+  var cityStateZipString: String {
+    return "\(city), \(state) \(zipCode)"
+  }
+}

Sources/PdfClient/Views/RegisterTable.swift

@@ -0,0 +1,33 @@
+import Elementary
+import ManualDCore
+
+struct RegisterDetailTable: HTML, Sendable {
+  let rooms: [DuctSizes.RoomContainer]
+
+  var body: some HTML<HTMLTag.table> {
+    table {
+      thead {
+        tr(.class("bg-green")) {
+          th { "Name" }
+          th { "Heating BTU" }
+          th { "Cooling BTU" }
+          th { "Heating CFM" }
+          th { "Cooling CFM" }
+          th { "Design CFM" }
+        }
+      }
+      tbody {
+        for row in rooms {
+          tr {
+            td { row.roomName }
+            td { row.heatingLoad.string(digits: 0) }
+            td { row.coolingLoad.string(digits: 0) }
+            td { row.heatingCFM.string(digits: 0) }
+            td { row.coolingCFM.string(digits: 0) }
+            td { row.designCFM.value.string(digits: 0) }
+          }
+        }
+      }
+    }
+  }
+}

Sources/PdfClient/Views/RoomTable.swift

@@ -0,0 +1,49 @@
+import Elementary
+import ManualDCore
+
+struct RoomsTable: HTML, Sendable {
+  let rooms: [Room]
+  let projectSHR: Double
+
+  var body: some HTML<HTMLTag.table> {
+    table {
+      thead {
+        tr(.class("bg-green")) {
+          th { "Name" }
+          th { "Heating BTU" }
+          th { "Cooling Total BTU" }
+          th { "Cooling Sensible BTU" }
+          th { "Register Count" }
+        }
+      }
+      tbody {
+        for room in rooms {
+          tr {
+            td { room.name }
+            td { room.heatingLoad.string(digits: 0) }
+            td { try! room.coolingLoad.ensured(shr: projectSHR).total.string(digits: 0) }
+            td {
+              try! room.coolingLoad.ensured(shr: projectSHR).sensible.string(digits: 0)
+            }
+            td { room.registerCount.string() }
+          }
+        }
+        // Totals
+        // tr(.class("table-footer")) {
+        tr {
+          td(.class("label")) { "Totals" }
+          td(.class("heating label")) {
+            rooms.totalHeatingLoad.string(digits: 0)
+          }
+          td(.class("coolingTotal label")) {
+            try! rooms.totalCoolingLoad(shr: projectSHR).string(digits: 0)
+          }
+          td(.class("coolingSensible label")) {
+            try! rooms.totalCoolingSensible(shr: projectSHR).string(digits: 0)
+          }
+          td {}
+        }
+      }
+    }
+  }
+}

Sources/PdfClient/Views/TrunkTable.swift

@@ -0,0 +1,42 @@
+import Elementary
+import ManualDCore
+
+struct TrunkTable: HTML, Sendable {
+  public let sizes: DuctSizes
+  public let type: TrunkSize.TrunkType
+
+  var trunks: [DuctSizes.TrunkContainer] {
+    sizes.trunks.filter { $0.type == type }
+  }
+
+  var body: some HTML<HTMLTag.table> {
+    table {
+      thead(.class("bg-green")) {
+        tr {
+          th { "Name" }
+          th { "Dsn CFM" }
+          th { "Round Size" }
+          th { "Velocity" }
+          th { "Final Size" }
+          th { "Flex Size" }
+          th { "Height" }
+          th { "Width" }
+        }
+      }
+      tbody {
+        for row in trunks {
+          tr {
+            td { row.name ?? "" }
+            td { row.designCFM.value.string(digits: 0) }
+            td { row.ductSize.roundSize.string() }
+            td { row.velocity.string() }
+            td { row.finalSize.string() }
+            td { row.flexSize.string() }
+            td { row.ductSize.height?.string() ?? "" }
+            td { row.width?.string() ?? "" }
+          }
+        }
+      }
+    }
+  }
+}

Sources/ProjectClient/Interface.swift

@@ -0,0 +1,86 @@
+import Dependencies
+import DependenciesMacros
+import Elementary
+import ManualDClient
+import ManualDCore
+import Vapor
+
+extension DependencyValues {
+  public var projectClient: ProjectClient {
+    get { self[ProjectClient.self] }
+    set { self[ProjectClient.self] = newValue }
+  }
+}
+
+/// Useful helper utilities for project's.
+///
+/// This is primarily used for implementing logic required to get the needed data
+/// for the view controller to render views.
+@DependencyClient
+public struct ProjectClient: Sendable {
+
+  /// Calculates the room duct sizes for the given project.
+  public var calculateRoomDuctSizes:
+    @Sendable (Project.ID) async throws -> [DuctSizes.RoomContainer]
+
+  /// Calculates the trunk duct sizes for the given project.
+  public var calculateTrunkDuctSizes:
+    @Sendable (Project.ID) async throws -> [DuctSizes.TrunkContainer]
+
+  public var createProject:
+    @Sendable (User.ID, Project.Create) async throws -> CreateProjectResponse
+
+  public var frictionRate: @Sendable (Project.ID) async throws -> FrictionRateResponse
+  public var generatePdf: @Sendable (Project.ID) async throws -> Response
+
+  public func calculateDuctSizes(_ projectID: Project.ID) async throws -> DuctSizes {
+    .init(
+      rooms: try await calculateRoomDuctSizes(projectID),
+      trunks: try await calculateTrunkDuctSizes(projectID)
+    )
+  }
+}
+
+extension ProjectClient: TestDependencyKey {
+  public static let testValue = Self()
+}
+
+extension ProjectClient {
+
+  public struct CreateProjectResponse: Codable, Equatable, Sendable {
+
+    public let projectID: Project.ID
+    public let rooms: [Room]
+    public let sensibleHeatRatio: Double?
+    public let completedSteps: Project.CompletedSteps
+
+    public init(
+      projectID: Project.ID,
+      rooms: [Room],
+      sensibleHeatRatio: Double? = nil,
+      completedSteps: Project.CompletedSteps
+    ) {
+      self.projectID = projectID
+      self.rooms = rooms
+      self.sensibleHeatRatio = sensibleHeatRatio
+      self.completedSteps = completedSteps
+    }
+  }
+
+  public struct FrictionRateResponse: Codable, Equatable, Sendable {
+
+    public let componentLosses: [ComponentPressureLoss]
+    public let equivalentLengths: EquivalentLength.MaxContainer
+    public let frictionRate: FrictionRate?
+
+    public init(
+      componentLosses: [ComponentPressureLoss],
+      equivalentLengths: EquivalentLength.MaxContainer,
+      frictionRate: FrictionRate? = nil
+    ) {
+      self.componentLosses = componentLosses
+      self.equivalentLengths = equivalentLengths
+      self.frictionRate = frictionRate
+    }
+  }
+}

Sources/ProjectClient/Internal/ComponentLoss+createDefaults.swift

@@ -0,0 +1,12 @@
+import DatabaseClient
+import ManualDCore
+
+extension DatabaseClient.ComponentLosses {
+
+  func createDefaults(projectID: Project.ID) async throws {
+    let defaults = ComponentPressureLoss.Create.default(projectID: projectID)
+    for loss in defaults {
+      _ = try await create(loss)
+    }
+  }
+}

Sources/ProjectClient/Internal/DatabaseClient+calculateDuctSizes.swift

@@ -0,0 +1,126 @@
+import DatabaseClient
+import Dependencies
+import ManualDClient
+import ManualDCore
+
+extension DatabaseClient {
+
+  func calculateDuctSizes(
+    details: Project.Detail
+  ) async throws -> (DuctSizes, DuctSizeSharedRequest) {
+    let (rooms, shared) = try await calculateRoomDuctSizes(details: details)
+    return try await (
+      .init(
+        rooms: rooms,
+        trunks: calculateTrunkDuctSizes(details: details, shared: shared)
+      ),
+      shared
+    )
+  }
+
+  func calculateRoomDuctSizes(
+    details: Project.Detail
+  ) async throws -> (rooms: [DuctSizes.RoomContainer], shared: DuctSizeSharedRequest) {
+    @Dependency(\.manualD) var manualD
+
+    let shared = try sharedDuctRequest(details: details)
+    let rooms = try await manualD.calculateRoomSizes(rooms: details.rooms, sharedRequest: shared)
+    return (rooms, shared)
+  }
+
+  func calculateTrunkDuctSizes(
+    details: Project.Detail,
+    shared: DuctSizeSharedRequest? = nil
+  ) async throws -> [DuctSizes.TrunkContainer] {
+    @Dependency(\.manualD) var manualD
+
+    let sharedRequest: DuctSizeSharedRequest
+    if let shared {
+      sharedRequest = shared
+    } else {
+      sharedRequest = try sharedDuctRequest(details: details)
+    }
+
+    return try await manualD.calculateTrunkSizes(
+      rooms: details.rooms,
+      trunks: details.trunks,
+      sharedRequest: sharedRequest
+    )
+  }
+
+  func sharedDuctRequest(details: Project.Detail) throws -> DuctSizeSharedRequest {
+    let projectSHR = try details.project.ensuredSHR()
+
+    guard
+      let dfrResponse = designFrictionRate(
+        componentLosses: details.componentLosses,
+        equipmentInfo: details.equipmentInfo,
+        equivalentLengths: details.maxContainer
+      )
+    else {
+      throw ProjectClientError("Project not complete.")
+    }
+
+    let ensuredTEL = try dfrResponse.ensureMaxContainer()
+
+    return .init(
+      equipmentInfo: dfrResponse.equipmentInfo,
+      maxSupplyLength: ensuredTEL.supply,
+      maxReturnLenght: ensuredTEL.return,
+      designFrictionRate: dfrResponse.designFrictionRate,
+      projectSHR: projectSHR
+    )
+  }
+
+  // Internal container.
+  struct DesignFrictionRateResponse: Equatable, Sendable {
+
+    typealias EnsuredTEL = (supply: EquivalentLength, return: EquivalentLength)
+
+    let designFrictionRate: Double
+    let equipmentInfo: EquipmentInfo
+    let telMaxContainer: EquivalentLength.MaxContainer
+
+    func ensureMaxContainer() throws -> EnsuredTEL {
+
+      guard let maxSupplyLength = telMaxContainer.supply else {
+        throw ProjectClientError("Max supply TEL not found")
+      }
+      guard let maxReturnLength = telMaxContainer.return else {
+        throw ProjectClientError("Max supply TEL not found")
+      }
+
+      return (maxSupplyLength, maxReturnLength)
+
+    }
+  }
+
+  func designFrictionRate(
+    componentLosses: [ComponentPressureLoss],
+    equipmentInfo: EquipmentInfo,
+    equivalentLengths: EquivalentLength.MaxContainer
+  ) -> DesignFrictionRateResponse? {
+    guard let tel = equivalentLengths.totalEquivalentLength,
+      componentLosses.count > 0
+    else { return nil }
+
+    let availableStaticPressure = equipmentInfo.staticPressure - componentLosses.total
+
+    return .init(
+      designFrictionRate: (availableStaticPressure * 100) / tel,
+      equipmentInfo: equipmentInfo,
+      telMaxContainer: equivalentLengths
+    )
+
+  }
+
+}
+
+extension Project {
+  func ensuredSHR() throws -> Double {
+    guard let shr = sensibleHeatRatio else {
+      throw ProjectClientError("Sensible heat ratio not set on project id: \(id)")
+    }
+    return shr
+  }
+}

Sources/ProjectClient/Internal/DatabaseClient+makePdfRequest.swift

@@ -0,0 +1,53 @@
+import DatabaseClient
+import Dependencies
+import ManualDClient
+import ManualDCore
+import PdfClient
+
+extension DatabaseClient {
+
+  /// Generate a pdf request for the given project.
+  func makePdfRequest(_ projectID: Project.ID) async throws -> PdfClient.Request {
+    @Dependency(\.manualD) var manualD
+
+    guard let projectDetails = try await projects.detail(projectID) else {
+      throw ProjectClientError.notFound(.project(projectID))
+    }
+
+    let (ductSizes, shared) = try await calculateDuctSizes(details: projectDetails)
+
+    let frictionRateResponse = try await manualD.frictionRate(details: projectDetails)
+    guard let frictionRate = frictionRateResponse.frictionRate else {
+      throw ProjectClientError.notFound(.frictionRate(projectID))
+    }
+
+    return .init(
+      details: projectDetails,
+      ductSizes: ductSizes,
+      shared: shared,
+      frictionRate: frictionRate
+    )
+  }
+
+}
+
+extension PdfClient.Request {
+  fileprivate init(
+    details: Project.Detail,
+    ductSizes: DuctSizes,
+    shared: DuctSizeSharedRequest,
+    frictionRate: FrictionRate
+  ) {
+    self.init(
+      project: details.project,
+      rooms: details.rooms,
+      componentLosses: details.componentLosses,
+      ductSizes: ductSizes,
+      equipmentInfo: details.equipmentInfo,
+      maxSupplyTEL: shared.maxSupplyLength,
+      maxReturnTEL: shared.maxReturnLenght,
+      frictionRate: frictionRate,
+      projectSHR: shared.projectSHR
+    )
+  }
+}

Sources/ProjectClient/Internal/ManualDClient+calculateDuctSizes.swift

@@ -0,0 +1,227 @@
+import Logging
+import ManualDClient
+import ManualDCore
+
+struct DuctSizeSharedRequest {
+  let equipmentInfo: EquipmentInfo
+  let maxSupplyLength: EquivalentLength
+  let maxReturnLenght: EquivalentLength
+  let designFrictionRate: Double
+  let projectSHR: Double
+}
+
+// TODO: Remove Logger and use depedency logger.
+
+extension ManualDClient {
+
+  func calculateDuctSizes(
+    rooms: [Room],
+    trunks: [TrunkSize],
+    sharedRequest: DuctSizeSharedRequest,
+    logger: Logger? = nil
+  ) async throws -> DuctSizes {
+    try await .init(
+      rooms: calculateRoomSizes(
+        rooms: rooms,
+        sharedRequest: sharedRequest
+      ),
+      trunks: calculateTrunkSizes(
+        rooms: rooms,
+        trunks: trunks,
+        sharedRequest: sharedRequest
+      )
+    )
+  }
+
+  func calculateRoomSizes(
+    rooms: [Room],
+    sharedRequest: DuctSizeSharedRequest,
+    logger: Logger? = nil
+  ) async throws -> [DuctSizes.RoomContainer] {
+
+    var retval: [DuctSizes.RoomContainer] = []
+    let totalHeatingLoad = rooms.totalHeatingLoad
+    let totalCoolingSensible = try rooms.totalCoolingSensible(shr: sharedRequest.projectSHR)
+
+    for room in rooms {
+      let heatingLoad = room.heatingLoadPerRegister
+      let coolingLoad = try room.coolingSensiblePerRegister(projectSHR: sharedRequest.projectSHR)
+      let heatingPercent = heatingLoad / totalHeatingLoad
+      let coolingPercent = coolingLoad / totalCoolingSensible
+      let heatingCFM = heatingPercent * Double(sharedRequest.equipmentInfo.heatingCFM)
+      let coolingCFM = coolingPercent * Double(sharedRequest.equipmentInfo.coolingCFM)
+      let designCFM = DuctSizes.DesignCFM(heating: heatingCFM, cooling: coolingCFM)
+      let sizes = try await self.ductSize(
+        cfm: designCFM.value,
+        frictionRate: sharedRequest.designFrictionRate
+      )
+
+      for n in 1...room.registerCount {
+
+        var rectangularWidth: Int? = nil
+        let rectangularSize = room.rectangularSizes?
+          .first(where: { $0.register == nil || $0.register == n })
+
+        if let rectangularSize {
+          let response = try await self.rectangularSize(
+            round: sizes.finalSize,
+            height: rectangularSize.height
+          )
+          rectangularWidth = response.width
+        }
+
+        retval.append(
+          .init(
+            roomID: room.id,
+            roomName: "\(room.name)-\(n)",
+            roomRegister: n,
+            heatingLoad: heatingLoad,
+            coolingLoad: coolingLoad,
+            heatingCFM: heatingCFM,
+            coolingCFM: coolingCFM,
+            ductSize: .init(
+              designCFM: designCFM,
+              sizes: sizes,
+              rectangularSize: rectangularSize,
+              width: rectangularWidth
+            )
+          )
+        )
+      }
+    }
+
+    return retval
+  }
+
+  func calculateTrunkSizes(
+    rooms: [Room],
+    trunks: [TrunkSize],
+    sharedRequest: DuctSizeSharedRequest,
+    logger: Logger? = nil
+  ) async throws -> [DuctSizes.TrunkContainer] {
+
+    var retval = [DuctSizes.TrunkContainer]()
+    let totalHeatingLoad = rooms.totalHeatingLoad
+    let totalCoolingSensible = try rooms.totalCoolingSensible(shr: sharedRequest.projectSHR)
+
+    for trunk in trunks {
+      let heatingLoad = trunk.totalHeatingLoad
+      let coolingLoad = try trunk.totalCoolingSensible(projectSHR: sharedRequest.projectSHR)
+      let heatingPercent = heatingLoad / totalHeatingLoad
+      let coolingPercent = coolingLoad / totalCoolingSensible
+      let heatingCFM = heatingPercent * Double(sharedRequest.equipmentInfo.heatingCFM)
+      let coolingCFM = coolingPercent * Double(sharedRequest.equipmentInfo.coolingCFM)
+      let designCFM = DuctSizes.DesignCFM(heating: heatingCFM, cooling: coolingCFM)
+      let sizes = try await self.ductSize(
+        cfm: designCFM.value,
+        frictionRate: sharedRequest.designFrictionRate
+      )
+      var width: Int? = nil
+      if let height = trunk.height {
+        let rectangularSize = try await self.rectangularSize(
+          round: sizes.finalSize,
+          height: height
+        )
+        width = rectangularSize.width
+      }
+
+      retval.append(
+        .init(
+          trunk: trunk,
+          ductSize: .init(
+            designCFM: designCFM,
+            sizes: sizes,
+            height: trunk.height,
+            width: width
+          )
+        )
+      )
+    }
+
+    return retval
+  }
+
+}
+
+extension DuctSizes.SizeContainer {
+  init(
+    designCFM: DuctSizes.DesignCFM,
+    sizes: ManualDClient.DuctSize,
+    height: Int?,
+    width: Int?
+  ) {
+    self.init(
+      rectangularID: nil,
+      designCFM: designCFM,
+      roundSize: sizes.calculatedSize,
+      finalSize: sizes.finalSize,
+      velocity: sizes.velocity,
+      flexSize: sizes.flexSize,
+      height: height,
+      width: width
+    )
+  }
+
+  init(
+    designCFM: DuctSizes.DesignCFM,
+    sizes: ManualDClient.DuctSize,
+    rectangularSize: Room.RectangularSize?,
+    width: Int?
+  ) {
+    self.init(
+      rectangularID: rectangularSize?.id,
+      designCFM: designCFM,
+      roundSize: sizes.calculatedSize,
+      finalSize: sizes.finalSize,
+      velocity: sizes.velocity,
+      flexSize: sizes.flexSize,
+      height: rectangularSize?.height,
+      width: width
+    )
+  }
+}
+
+// extension Room {
+//
+//   var heatingLoadPerRegister: Double {
+//
+//     heatingLoad / Double(registerCount)
+//   }
+//
+//   func coolingSensiblePerRegister(projectSHR: Double) -> Double {
+//     let sensible = coolingSensible ?? (coolingTotal * projectSHR)
+//     return sensible / Double(registerCount)
+//   }
+// }
+
+extension TrunkSize.RoomProxy {
+
+  // We need to make sure if registers got removed after a trunk
+  // was already made / saved that we do not include registers that
+  // no longer exist.
+  private var actualRegisterCount: Int {
+    guard registers.count <= room.registerCount else {
+      return room.registerCount
+    }
+    return registers.count
+  }
+
+  var totalHeatingLoad: Double {
+    room.heatingLoadPerRegister * Double(actualRegisterCount)
+  }
+
+  func totalCoolingSensible(projectSHR: Double) throws -> Double {
+    try room.coolingSensiblePerRegister(projectSHR: projectSHR) * Double(actualRegisterCount)
+  }
+}
+
+extension TrunkSize {
+
+  var totalHeatingLoad: Double {
+    rooms.reduce(into: 0) { $0 += $1.totalHeatingLoad }
+  }
+
+  func totalCoolingSensible(projectSHR: Double) throws -> Double {
+    try rooms.reduce(into: 0) { $0 += try $1.totalCoolingSensible(projectSHR: projectSHR) }
+  }
+}

Sources/ProjectClient/Internal/ManualDClient+frictionRate.swift

@@ -0,0 +1,55 @@
+import DatabaseClient
+import Dependencies
+import ManualDClient
+import ManualDCore
+
+extension ManualDClient {
+
+  func frictionRate(details: Project.Detail) async throws -> ProjectClient.FrictionRateResponse {
+
+    let maxContainer = details.maxContainer
+    guard let totalEquivalentLength = maxContainer.totalEquivalentLength else {
+      return .init(componentLosses: details.componentLosses, equivalentLengths: maxContainer)
+    }
+
+    return try await .init(
+      componentLosses: details.componentLosses,
+      equivalentLengths: maxContainer,
+      frictionRate: frictionRate(
+        .init(
+          externalStaticPressure: details.equipmentInfo.staticPressure,
+          componentPressureLosses: details.componentLosses,
+          totalEquivalentLength: Int(totalEquivalentLength)
+        )
+      )
+    )
+  }
+
+  func frictionRate(projectID: Project.ID) async throws -> ProjectClient.FrictionRateResponse {
+    @Dependency(\.database) var database
+
+    let componentLosses = try await database.componentLosses.fetch(projectID)
+    let lengths = try await database.equivalentLengths.fetchMax(projectID)
+
+    let equipmentInfo = try await database.equipment.fetch(projectID)
+    guard let staticPressure = equipmentInfo?.staticPressure else {
+      return .init(componentLosses: componentLosses, equivalentLengths: lengths)
+    }
+
+    guard let totalEquivalentLength = lengths.totalEquivalentLength else {
+      return .init(componentLosses: componentLosses, equivalentLengths: lengths)
+    }
+
+    return try await .init(
+      componentLosses: componentLosses,
+      equivalentLengths: lengths,
+      frictionRate: frictionRate(
+        .init(
+          externalStaticPressure: staticPressure,
+          componentPressureLosses: componentLosses,
+          totalEquivalentLength: Int(totalEquivalentLength)
+        )
+      )
+    )
+  }
+}

Sources/ProjectClient/Internal/ProjectDetail+maxContainer.swift

@@ -0,0 +1,14 @@
+import ManualDCore
+
+extension Project.Detail {
+  var maxContainer: EquivalentLength.MaxContainer {
+    .init(
+      supply: equivalentLengths.filter({ $0.type == .supply })
+        .sorted(by: { $0.totalEquivalentLength > $1.totalEquivalentLength })
+        .first,
+      return: equivalentLengths.filter({ $0.type == .return })
+        .sorted(by: { $0.totalEquivalentLength > $1.totalEquivalentLength })
+        .first
+    )
+  }
+}

Sources/ProjectClient/Live.swift

@@ -0,0 +1,63 @@
+import DatabaseClient
+import Dependencies
+import FileClient
+import Logging
+import ManualDClient
+import ManualDCore
+import PdfClient
+
+extension ProjectClient: DependencyKey {
+
+  public static var liveValue: Self {
+    @Dependency(\.database) var database
+    @Dependency(\.manualD) var manualD
+    @Dependency(\.pdfClient) var pdfClient
+    @Dependency(\.fileClient) var fileClient
+
+    return .init(
+      calculateRoomDuctSizes: { projectID in
+        guard let details = try await database.projects.detail(projectID) else {
+          throw ProjectClientError.notFound(.project(projectID))
+        }
+        return try await database.calculateRoomDuctSizes(details: details).rooms
+      },
+      calculateTrunkDuctSizes: { projectID in
+        guard let details = try await database.projects.detail(projectID) else {
+          throw ProjectClientError.notFound(.project(projectID))
+        }
+        return try await database.calculateTrunkDuctSizes(details: details)
+      },
+      createProject: { userID, request in
+        let project = try await database.projects.create(userID, request)
+        try await database.componentLosses.createDefaults(projectID: project.id)
+        return try await .init(
+          projectID: project.id,
+          rooms: database.rooms.fetch(project.id),
+          sensibleHeatRatio: database.projects.getSensibleHeatRatio(project.id),
+          completedSteps: database.projects.getCompletedSteps(project.id)
+        )
+      },
+      frictionRate: { projectID in
+        try await manualD.frictionRate(projectID: projectID)
+      },
+      generatePdf: { projectID in
+        let pdfResponse = try await pdfClient.generatePdf(
+          request: database.makePdfRequest(projectID)
+        )
+
+        let response = try await fileClient.streamFile(at: pdfResponse.pdfPath) {
+          try await fileClient.removeFile(pdfResponse.htmlPath)
+          try await fileClient.removeFile(pdfResponse.pdfPath)
+        }
+
+        response.headers.replaceOrAdd(name: .contentType, value: "application/octet-stream")
+        response.headers.replaceOrAdd(
+          name: .contentDisposition, value: "attachment; filename=Duct-Calc.pdf"
+        )
+
+        return response
+      }
+    )
+  }
+
+}

Sources/ProjectClient/ProjectClientError.swift

@@ -0,0 +1,35 @@
+import Foundation
+import ManualDCore
+
+public struct ProjectClientError: Error {
+  public let reason: String
+
+  public init(_ reason: String) {
+    self.reason = reason
+  }
+
+  static func notFound(_ notFound: NotFound) -> Self {
+    .init(notFound.reason)
+  }
+
+  enum NotFound {
+    case project(Project.ID)
+    case frictionRate(Project.ID)
+
+    var reason: String {
+      switch self {
+      case .project(let id):
+        return "Project not found. id: \(id)"
+      case .frictionRate(let id):
+        return """
+          Friction unable to be calculated. id: \(id)
+
+          This usually means that not all the required steps have been completed.
+
+          Calculating the friction rate requires the component pressure losses to be set and
+          have a max equivalent length for both the supply and return.
+          """
+      }
+    }
+  }
+}

Sources/Styleguide/Badge.swift

@@ -1,4 +1,5 @@
 import Elementary
+import Tagged
 
 public struct Badge<Inner: HTML>: HTML, Sendable where Inner: Sendable {
 
@@ -25,4 +26,5 @@ extension Badge where Inner == Number {
   public init(number: Double, digits: Int = 2) {
     self.inner = Number(number, digits: digits)
   }
+
 }

Sources/Styleguide/Buttons.swift

@@ -26,32 +26,6 @@ public struct SubmitButton: HTML, Sendable {
   }
 }
 
-public struct CancelButton: HTML, Sendable {
-  let title: String
-  let type: HTMLAttribute<HTMLTag.button>.ButtonType
-
-  public init(
-    title: String = "Cancel",
-    type: HTMLAttribute<HTMLTag.button>.ButtonType = .button
-  ) {
-    self.title = title
-    self.type = type
-  }
-
-  public var body: some HTML<HTMLTag.button> {
-    button(
-      .class(
-        """
-        text-white font-bold text-xl bg-red-500 hover:bg-red-600 px-4 py-2 rounded-lg shadow-lg
-        """
-      ),
-      .type(type)
-    ) {
-      title
-    }
-  }
-}
-
 public struct EditButton: HTML, Sendable {
   let title: String?
   let type: HTMLAttribute<HTMLTag.button>.ButtonType

Sources/Styleguide/Date.swift

@@ -6,7 +6,7 @@ public struct DateView: HTML, Sendable {
 
   var formatter: DateFormatter {
     let formatter = DateFormatter()
-    formatter.dateStyle = .short
+    formatter.dateFormat = "MM/dd/yyyy"
     return formatter
   }
 

Sources/Styleguide/ElementaryExtensions.swift

@@ -9,13 +9,6 @@ extension HTMLAttribute where Tag: HTMLTrait.Attributes.href {
   }
 }
 
-extension HTMLAttribute where Tag == HTMLTag.form {
-
-  public static func action(route: SiteRoute.View) -> Self {
-    action(SiteRoute.View.router.path(for: route))
-  }
-}
-
 extension HTMLAttribute where Tag == HTMLTag.input {
 
   public static func value(_ string: String?) -> Self {
@@ -42,9 +35,6 @@ extension HTMLAttribute where Tag == HTMLTag.button {
 }
 
 extension HTML where Tag: HTMLTrait.Attributes.Global {
-  public func badge() -> _AttributedElement<Self> {
-    attributes(.class("badge badge-lg badge-outline"))
-  }
 
   public func hidden(when shouldHide: Bool) -> _AttributedElement<Self> {
     attributes(.class("hidden"), when: shouldHide)

Sources/Styleguide/HTMXExtensions.swift

@@ -32,6 +32,6 @@ extension HTMLAttribute.hx {
 extension HTMLAttribute.hx {
   @Sendable
   public static func indicator() -> HTMLAttribute {
-    indicator(".hx-indicator")
+    indicator(".htmx-indicator")
   }
 }

Sources/Styleguide/Icon.swift

@@ -1,45 +0,0 @@
-import Elementary
-
-// TODO: Remove, using svg's.
-public struct Icon: HTML, Sendable {
-
-  let icon: String
-
-  public init(icon: String) {
-    self.icon = icon
-  }
-
-  public var body: some HTML {
-    i(.data("lucide", value: icon)) {}
-  }
-}
-
-extension Icon {
-
-  public init(_ icon: Key) {
-    self.init(icon: icon.icon)
-  }
-
-  public enum Key: String {
-
-    case circlePlus
-    case close
-    case doorClosed
-    case mapPin
-    case rulerDimensionLine
-    case squareFunction
-    case wind
-
-    var icon: String {
-      switch self {
-      case .circlePlus: return "circle-plus"
-      case .close: return "x"
-      case .doorClosed: return "door-closed"
-      case .mapPin: return "map-pin"
-      case .rulerDimensionLine: return "ruler-dimension-line"
-      case .squareFunction: return "square-function"
-      case .wind: return rawValue
-      }
-    }
-  }
-}

Sources/Styleguide/Input.swift

@@ -21,60 +21,6 @@ public struct LabeledInput: HTML, Sendable {
   }
 }
 
-public struct Input: HTML, Sendable {
-
-  let id: String?
-  let name: String?
-  let placeholder: String
-
-  private var _name: String {
-    guard let name else {
-      return id ?? ""
-    }
-    return name
-  }
-
-  init(
-    id: String? = nil,
-    name: String? = nil,
-    placeholder: String
-  ) {
-    self.id = id
-    self.name = name
-    self.placeholder = placeholder
-  }
-
-  public init(
-    id: String,
-    name: String? = nil,
-    placeholder: String
-  ) {
-    self.id = id
-    self.name = name
-    self.placeholder = placeholder
-  }
-
-  public init(
-    name: String,
-    placeholder: String
-  ) {
-    self.init(id: nil, name: name, placeholder: placeholder)
-  }
-
-  public var body: some HTML<HTMLTag.input> {
-    input(
-      .id(id ?? ""), .name(_name), .placeholder(placeholder),
-      .class(
-        """
-        input w-full rounded-md bg-white px-3 py-1.5 text-slate-900 outline-1
-        -outline-offset-1 outline-slate-300 focus:outline focus:-outline-offset-2
-        focus:outline-indigo-600 invalid:border-red-500 out-of-range:border-red-500
-        """
-      )
-    )
-  }
-}
-
 extension HTMLAttribute where Tag == HTMLTag.input {
 
   public static func max(_ value: String) -> Self {

Sources/Styleguide/Number.swift

@@ -1,17 +1,11 @@
 import Elementary
 import Foundation
+import ManualDCore
 
 public struct Number: HTML, Sendable {
   let fractionDigits: Int
   let value: Double
 
-  private var formatter: NumberFormatter {
-    let formatter = NumberFormatter()
-    formatter.maximumFractionDigits = fractionDigits
-    formatter.numberStyle = .decimal
-    return formatter
-  }
-
   public init(
     _ value: Double,
     digits fractionDigits: Int = 2
@@ -27,6 +21,6 @@ public struct Number: HTML, Sendable {
   }
 
   public var body: some HTML<HTMLTag.span> {
-    span { formatter.string(for: value) ?? "N/A" }
+    span { value.string(digits: fractionDigits) }
   }
 }

Sources/Styleguide/ResultView.swift

@@ -1,89 +1,76 @@
 import Elementary
 import Foundation
 
-public struct ResultView<
-  V: Sendable,
-  E: Error,
-  ValueView: HTML,
-  ErrorView: HTML
->: HTML {
+public struct ResultView<ValueView, ErrorView>: HTML where ValueView: HTML, ErrorView: HTML {
 
-  let onSuccess: @Sendable (V) -> ValueView
-  let onError: @Sendable (E) -> ErrorView
-  let result: Result<V, E>
+  let result: Result<ValueView, any Error>
+  let errorView: @Sendable (any Error) -> ErrorView
 
   public init(
-    result: Result<V, E>,
-    @HTMLBuilder onSuccess: @escaping @Sendable (V) -> ValueView,
-    @HTMLBuilder onError: @escaping @Sendable (E) -> ErrorView
-  ) {
-    self.result = result
-    self.onError = onError
-    self.onSuccess = onSuccess
+    _ content: @escaping @Sendable () async throws -> ValueView,
+    onError: @escaping @Sendable (any Error) -> ErrorView
+  ) async {
+    self.result = await Result(catching: content)
+    self.errorView = onError
   }
 
   public var body: some HTML {
     switch result {
-    case .success(let value):
-      onSuccess(value)
+    case .success(let view):
+      view
     case .failure(let error):
-      onError(error)
+      errorView(error)
     }
   }
 }
 
-extension ResultView {
+extension ResultView where ErrorView == Styleguide.ErrorView {
 
   public init(
-    result: Result<V, E>,
-    @HTMLBuilder onSuccess: @escaping @Sendable (V) -> ValueView
-  ) where ErrorView == Styleguide.ErrorView<E> {
-    self.init(result: result, onSuccess: onSuccess) { error in
-      Styleguide.ErrorView(error: error)
-    }
+    _ content: @escaping @Sendable () async throws -> ValueView
+  ) async {
+    await self.init(
+      content,
+      onError: { Styleguide.ErrorView(error: $0) }
+    )
+  }
+
+  public init<V: Sendable>(
+    catching: @escaping @Sendable () async throws -> V,
+    onSuccess content: @escaping @Sendable (V) -> ValueView
+  ) async where ValueView: Sendable {
+    await self.init(
+      {
+        try await content(catching())
+      }
+    )
   }
 
   public init(
-    catching: @escaping @Sendable () async throws(E) -> V,
-    @HTMLBuilder onSuccess: @escaping @Sendable (V) -> ValueView
-  ) async where ErrorView == Styleguide.ErrorView<E> {
+    catching: @escaping @Sendable () async throws -> Void
+  ) async where ValueView == EmptyHTML {
     await self.init(
-      result: .init(catching: catching),
-      onSuccess: onSuccess
-    ) { error in
-      Styleguide.ErrorView(error: error)
-    }
-  }
-
-  public init(
-    catching: @escaping @Sendable () async throws(E) -> V,
-  ) async where ErrorView == Styleguide.ErrorView<E>, V == Void, ValueView == EmptyHTML {
-    await self.init(
-      result: .init(catching: catching),
+      catching: catching,
       onSuccess: { EmptyHTML() }
-    ) { error in
-      Styleguide.ErrorView(error: error)
-    }
+    )
   }
 }
 
-extension ResultView: Sendable where Error: Sendable, ValueView: Sendable, ErrorView: Sendable {}
+extension ResultView: Sendable where ValueView: Sendable, ErrorView: Sendable {}
 
-public struct ErrorView<E: Error>: HTML, Sendable where Error: Sendable {
+public struct ErrorView: HTML, Sendable {
+  let error: any Error
 
-  let error: E
-
-  public init(error: E) {
+  public init(error: any Error) {
     self.error = error
   }
 
   public var body: some HTML<HTMLTag.div> {
     div {
-      h1(.class("text-2xl font-bold text-error")) { "Oops: Error" }
+      h1(.class("text-xl font-bold text-error")) { "Oops: Error" }
       p {
-        "\(error)"
+        "\(error.localizedDescription)"
       }
     }
   }
-
 }

Sources/Styleguide/SVG.swift

@@ -26,6 +26,7 @@ extension SVG {
     case doorClosed
     case email
     case fan
+    case filePlusCorner
     case key
     case mapPin
     case rulerDimensionLine
@@ -94,6 +95,10 @@ extension SVG {
         return """
           <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-fan-icon lucide-fan"><path d="M10.827 16.379a6.082 6.082 0 0 1-8.618-7.002l5.412 1.45a6.082 6.082 0 0 1 7.002-8.618l-1.45 5.412a6.082 6.082 0 0 1 8.618 7.002l-5.412-1.45a6.082 6.082 0 0 1-7.002 8.618l1.45-5.412Z"/><path d="M12 12v.01"/></svg>
           """
+      case .filePlusCorner:
+        return """
+          <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-file-plus-corner-icon lucide-file-plus-corner"><path d="M11.35 22H6a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h8a2.4 2.4 0 0 1 1.706.706l3.588 3.588A2.4 2.4 0 0 1 20 8v5.35"/><path d="M14 2v5a1 1 0 0 0 1 1h5"/><path d="M14 19h6"/><path d="M17 16v6"/></svg>
+          """
       case .key:
         return """
             <svg class="h-[1em] opacity-50" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">

Sources/Styleguide/Select.swift

@@ -0,0 +1,61 @@
+import Elementary
+import Foundation
+
+/// NOTE: This does not have the 'select' class added to it, because it's generally
+///       added to the label of the field.
+public struct Select<Label, Element>: HTML where Label: HTML {
+
+  let label: @Sendable (Element) -> Label
+  let value: @Sendable (Element) -> String
+  let selected: @Sendable (Element) -> Bool
+  let items: [Element]
+  let placeholder: String?
+
+  public init(
+    _ items: [Element],
+    placeholder: String? = nil,
+    value: @escaping @Sendable (Element) -> String,
+    selected: @escaping @Sendable (Element) -> Bool = { _ in false },
+    @HTMLBuilder label: @escaping @Sendable (Element) -> Label
+  ) {
+    self.label = label
+    self.items = items
+    self.placeholder = placeholder
+    self.selected = selected
+    self.value = value
+  }
+
+  public var body: some HTML<HTMLTag.select> {
+    select {
+      if let placeholder {
+        option(.selected, .disabled) { placeholder }
+      }
+      for item in items {
+        option(.value(value(item))) { label(item) }
+          .attributes(.selected, when: selected(item))
+      }
+    }
+  }
+}
+
+extension Select: Sendable where Element: Sendable, Label: Sendable {}
+
+extension Select where Element: Identifiable, Element.ID == UUID, Element: Sendable {
+
+  public init(
+    _ items: [Element],
+    placeholder: String? = nil,
+    selected: @escaping @Sendable (Element) -> Bool = { _ in false },
+    @HTMLBuilder label: @escaping @Sendable (Element) -> Label
+  ) {
+    self.init(
+      items,
+      placeholder: placeholder,
+      value: { $0.id.uuidString },
+      selected: selected,
+      label: label
+    )
+
+  }
+
+}

Sources/ViewController/Extensions/DatabaseExtensions.swift

@@ -1,78 +0,0 @@
-import DatabaseClient
-import Dependencies
-import Fluent
-import ManualDClient
-import ManualDCore
-import Vapor
-
-// FIX: Remove these, not used currently.
-extension DatabaseClient.Projects {
-
-  func fetchPage(
-    userID: User.ID,
-    page: Int = 1,
-    limit: Int = 25
-  ) async throws -> Page<Project> {
-    try await fetch(userID, .init(page: page, per: limit))
-  }
-
-  func fetchPage(
-    userID: User.ID,
-    page: PageRequest
-  ) async throws -> Page<Project> {
-    try await fetch(userID, page)
-  }
-}
-
-extension DatabaseClient {
-
-  func calculateDuctSizes(
-    projectID: Project.ID
-  ) async throws -> (rooms: [DuctSizing.RoomContainer], trunks: [DuctSizing.TrunkContainer]) {
-    @Dependency(\.manualD) var manualD
-
-    return try await manualD.calculate(
-      rooms: rooms.fetch(projectID),
-      trunks: trunkSizes.fetch(projectID),
-      designFrictionRateResult: designFrictionRate(projectID: projectID),
-      projectSHR: projects.getSensibleHeatRatio(projectID)
-    )
-  }
-
-  func designFrictionRate(
-    projectID: Project.ID
-  ) async throws -> (EquipmentInfo, EffectiveLength.MaxContainer, Double)? {
-    guard let equipmentInfo = try await equipment.fetch(projectID) else {
-      return nil
-    }
-
-    let equivalentLengths = try await effectiveLength.fetchMax(projectID)
-    guard let tel = equivalentLengths.total else { return nil }
-
-    let componentLosses = try await componentLoss.fetch(projectID)
-    guard componentLosses.count > 0 else { return nil }
-
-    let availableStaticPressure =
-      equipmentInfo.staticPressure - componentLosses.total
-
-    let designFrictionRate = (availableStaticPressure * 100) / tel
-
-    return (equipmentInfo, equivalentLengths, designFrictionRate)
-  }
-}
-
-extension DatabaseClient.ComponentLoss {
-
-  func createDefaults(projectID: Project.ID) async throws {
-    let defaults = ComponentPressureLoss.Create.default(projectID: projectID)
-    for loss in defaults {
-      _ = try await create(loss)
-    }
-  }
-}
-
-extension PageRequest {
-  static func next<T>(_ currentPage: Page<T>) -> Self {
-    .init(page: currentPage.metadata.page + 1, per: currentPage.metadata.per)
-  }
-}

Sources/ViewController/Extensions/EquivalentLengthForm+extensions.swift

@@ -12,8 +12,8 @@ extension SiteRoute.View.ProjectRoute.EquivalentLengthRoute.StepThree {
     }
   }
 
-  var groups: [EffectiveLength.Group] {
-    var groups = [EffectiveLength.Group]()
+  var groups: [EquivalentLength.FittingGroup] {
+    var groups = [EquivalentLength.FittingGroup]()
     for (n, group) in groupGroups.enumerated() {
       groups.append(
         .init(
@@ -29,7 +29,7 @@ extension SiteRoute.View.ProjectRoute.EquivalentLengthRoute.StepThree {
   }
 }
 
-extension EffectiveLength.Create {
+extension EquivalentLength.Create {
 
   init(
     form: SiteRoute.View.ProjectRoute.EquivalentLengthRoute.StepThree,
@@ -45,7 +45,7 @@ extension EffectiveLength.Create {
   }
 }
 
-extension EffectiveLength.Update {
+extension EquivalentLength.Update {
   init(
     form: SiteRoute.View.ProjectRoute.EquivalentLengthRoute.StepThree,
     projectID: Project.ID

Sources/ViewController/Extensions/ManualDClient+extensions.swift

@@ -1,38 +0,0 @@
-import Logging
-import ManualDClient
-import ManualDCore
-
-extension ManualDClient {
-
-  func calculate(
-    rooms: [Room],
-    trunks: [DuctSizing.TrunkSize],
-    designFrictionRateResult: (EquipmentInfo, EffectiveLength.MaxContainer, Double)?,
-    projectSHR: Double?,
-    logger: Logger? = nil
-  ) async throws -> (rooms: [DuctSizing.RoomContainer], trunks: [DuctSizing.TrunkContainer]) {
-    guard let designFrictionRateResult else { return ([], []) }
-    let equipmentInfo = designFrictionRateResult.0
-    let effectiveLengths = designFrictionRateResult.1
-    let designFrictionRate = designFrictionRateResult.2
-
-    guard let maxSupply = effectiveLengths.supply else { return ([], []) }
-    guard let maxReturn = effectiveLengths.return else { return ([], []) }
-
-    let ductRooms = try await self.calculateSizes(
-      rooms: rooms,
-      trunks: trunks,
-      equipmentInfo: equipmentInfo,
-      maxSupplyLength: maxSupply,
-      maxReturnLength: maxReturn,
-      designFrictionRate: designFrictionRate,
-      projectSHR: projectSHR ?? 1.0,
-      logger: logger
-    )
-
-    // logger?.debug("Rooms: \(ductRooms)")
-
-    return ductRooms
-
-  }
-}

Sources/ViewController/Extensions/TrunkSizeForm+extensions.swift

@@ -4,7 +4,7 @@ import ManualDCore
 
 extension SiteRoute.View.ProjectRoute.DuctSizingRoute.TrunkSizeForm {
 
-  func toCreate(logger: Logger? = nil) throws -> DuctSizing.TrunkSize.Create {
+  func toCreate(logger: Logger? = nil) throws -> TrunkSize.Create {
     try .init(
       projectID: projectID,
       type: type,
@@ -14,7 +14,7 @@ extension SiteRoute.View.ProjectRoute.DuctSizingRoute.TrunkSizeForm {
     )
   }
 
-  func toUpdate(logger: Logger? = nil) throws -> DuctSizing.TrunkSize.Update {
+  func toUpdate(logger: Logger? = nil) throws -> TrunkSize.Update {
     try .init(
       type: type,
       rooms: makeRooms(logger: logger),

Sources/ViewController/Interface.swift

@@ -1,3 +1,4 @@
+import AuthClient
 import Dependencies
 import DependenciesMacros
 import Elementary
@@ -15,10 +16,6 @@ public typealias AnySendableHTML = (any HTML & Sendable)
 
 @DependencyClient
 public struct ViewController: Sendable {
-
-  public typealias AuthenticateHandler = @Sendable (User) -> Void
-  public typealias CurrentUserHandler = @Sendable () throws -> User
-
   public var view: @Sendable (Request) async throws -> AnySendableHTML
 }
 
@@ -29,21 +26,15 @@ extension ViewController {
     public let route: SiteRoute.View
     public let isHtmxRequest: Bool
     public let logger: Logger
-    public let authenticateUser: AuthenticateHandler
-    public let currentUser: CurrentUserHandler
 
     public init(
       route: SiteRoute.View,
       isHtmxRequest: Bool,
-      logger: Logger,
-      authenticateUser: @escaping AuthenticateHandler,
-      currentUser: @escaping CurrentUserHandler
+      logger: Logger
     ) {
       self.route = route
       self.isHtmxRequest = isHtmxRequest
       self.logger = logger
-      self.authenticateUser = authenticateUser
-      self.currentUser = currentUser
     }
 
   }
@@ -62,28 +53,23 @@ extension ViewController: DependencyKey {
 
 extension ViewController.Request {
 
+  func currentUser() throws -> User {
+    @Dependency(\.auth.currentUser) var currentUser
+    return try currentUser()
+  }
+
   func authenticate(
     _ login: User.Login
   ) async throws -> User {
-    @Dependency(\.database.users) var users
-    let token = try await users.login(login)
-    let user = try await users.get(token.userID)!
-    authenticateUser(user)
-    logger.debug("Logged in user: \(user.id)")
-    return user
+    @Dependency(\.auth) var auth
+    return try await auth.login(login)
   }
 
   @discardableResult
   func createAndAuthenticate(
     _ signup: User.Create
   ) async throws -> User {
-    @Dependency(\.database.users) var users
-    let user = try await users.create(signup)
-    let _ = try await users.login(
-      .init(email: signup.email, password: signup.password)
-    )
-    authenticateUser(user)
-    logger.debug("Created and logged in user: \(user.id)")
-    return user
+    @Dependency(\.auth) var auth
+    return try await auth.createAndLogin(signup)
   }
 }

Sources/ViewController/Live.swift

@@ -1,8 +1,11 @@
+import CSVParser
 import DatabaseClient
 import Dependencies
 import Elementary
 import Foundation
 import ManualDCore
+import PdfClient
+import ProjectClient
 import Styleguide
 
 extension ViewController.Request {
@@ -10,20 +13,28 @@ extension ViewController.Request {
   func render() async -> AnySendableHTML {
 
     @Dependency(\.database) var database
+    @Dependency(\.projectClient) var projectClient
+    @Dependency(\.pdfClient) var pdfClient
 
     switch route {
     case .test:
-      let projectID = UUID(uuidString: "A9C20153-E2E5-4C65-B33F-4D8A29C63A7A")!
-      return await view {
-        await ResultView {
-          return (
-            try await database.projects.getCompletedSteps(projectID),
-            try await database.calculateDuctSizes(projectID: projectID)
-          )
-        } onSuccess: { (_, result) in
-          TestPage(trunks: result.trunks, rooms: result.rooms)
-        }
-      }
+      // let projectID = UUID(uuidString: "E796C96C-F527-4753-A00A-EBCF25630663")!
+      // return await view {
+      //   await ResultView {
+      //
+      //     // return (
+      //     //   try await database.projects.getCompletedSteps(projectID),
+      //     //   try await projectClient.calculateDuctSizes(projectID)
+      //     // )
+      //     return try await pdfClient.html(.mock())
+      //   } onSuccess: {
+      //     $0
+      //     // TestPage()
+      //     // TestPage(trunks: result.trunks, rooms: result.rooms)
+      //   }
+      // }
+      // return try! await pdfClient.html(.mock())
+      return EmptyHTML()
     case .login(let route):
       switch route {
       case .index(let next):
@@ -60,7 +71,7 @@ extension ViewController.Request {
       case .submitProfile(let profile):
         return await view {
           await ResultView {
-            _ = try await database.userProfile.create(profile)
+            _ = try await database.userProfiles.create(profile)
             let userID = profile.userID
             // let user = try currentUser()
             return (
@@ -98,7 +109,7 @@ extension ViewController.Request {
     get async {
       @Dependency(\.database) var database
       guard let user = try? currentUser() else { return nil }
-      return try? await database.userProfile.fetch(user.id)?.theme
+      return try? await database.userProfiles.fetch(user.id)?.theme
     }
   }
 
@@ -116,6 +127,7 @@ extension SiteRoute.View.ProjectRoute {
 
   func renderView(on request: ViewController.Request) async -> AnySendableHTML {
     @Dependency(\.database) var database
+    @Dependency(\.projectClient) var projectClient
 
     switch self {
     case .index:
@@ -124,7 +136,7 @@ extension SiteRoute.View.ProjectRoute {
           let user = try request.currentUser()
           return try await (
             user.id,
-            database.projects.fetchPage(userID: user.id)
+            database.projects.fetch(user.id, .first)
           )
 
         } onSuccess: { (userID, projects) in
@@ -146,19 +158,14 @@ extension SiteRoute.View.ProjectRoute {
       return await request.view {
         await ResultView {
           let user = try request.currentUser()
-          let project = try await database.projects.create(user.id, form)
-          try await database.componentLoss.createDefaults(projectID: project.id)
-          let rooms = try await database.rooms.fetch(project.id)
-          let shr = try await database.projects.getSensibleHeatRatio(project.id)
-          let completedSteps = try await database.projects.getCompletedSteps(project.id)
-          return (project.id, rooms, shr, completedSteps)
-        } onSuccess: { (projectID, rooms, shr, completedSteps) in
+          return try await projectClient.createProject(user.id, form)
+        } onSuccess: { response in
           ProjectView(
-            projectID: projectID,
+            projectID: response.projectID,
             activeTab: .rooms,
-            completedSteps: completedSteps
+            completedSteps: response.completedSteps
           ) {
-            RoomsView(rooms: rooms, sensibleHeatRatio: shr)
+            RoomsView(rooms: response.rooms, sensibleHeatRatio: response.sensibleHeatRatio)
           }
         }
       }
@@ -187,6 +194,12 @@ extension SiteRoute.View.ProjectRoute {
         return await route.renderView(on: request, projectID: projectID)
       case .frictionRate(let route):
         return await route.renderView(on: request, projectID: projectID)
+      case .pdf:
+        // FIX: This should return a pdf to download or be wrapped in a
+        //      result view.
+        // return try! await projectClient.toHTML(projectID)
+        // This get's handled elsewhere because it returns a response, not a view.
+        fatalError()
       case .rooms(let route):
         return await route.renderView(on: request, projectID: projectID)
       }
@@ -272,10 +285,18 @@ extension SiteRoute.View.ProjectRoute.RoomRoute {
     on request: ViewController.Request,
     projectID: Project.ID
   ) async -> AnySendableHTML {
+    @Dependency(\.csvParser) var csvParser
     @Dependency(\.database) var database
 
     switch self {
 
+    case .csv(let csv):
+      return await roomsView(on: request, projectID: projectID) {
+        let rooms = try await csvParser.parseRooms(csv)
+        _ = try await database.rooms.createMany(projectID, rooms)
+      }
+    // return EmptyHTML()
+
     case .delete(let id):
       return await ResultView {
         try await database.rooms.delete(id)
@@ -286,7 +307,7 @@ extension SiteRoute.View.ProjectRoute.RoomRoute {
 
     case .submit(let form):
       return await roomsView(on: request, projectID: projectID) {
-        _ = try await database.rooms.create(form)
+        _ = try await database.rooms.create(projectID, form)
       }
 
     case .update(let id, let form):
@@ -354,8 +375,8 @@ extension SiteRoute.View.ProjectRoute.FrictionRateRoute {
     return await request.view {
       await ResultView {
         let equipment = try await database.equipment.fetch(projectID)
-        let componentLosses = try await database.componentLoss.fetch(projectID)
-        let lengths = try await database.effectiveLength.fetchMax(projectID)
+        let componentLosses = try await database.componentLosses.fetch(projectID)
+        let lengths = try await database.equivalentLengths.fetchMax(projectID)
 
         return (
           try await database.projects.getCompletedSteps(projectID),
@@ -372,7 +393,7 @@ extension SiteRoute.View.ProjectRoute.FrictionRateRoute {
           FrictionRateView(
             componentLosses: losses,
             equivalentLengths: lengths,
-            frictionRateResponse: frictionRate
+            frictionRate: frictionRate
           )
         }
 
@@ -395,16 +416,16 @@ extension SiteRoute.View.ProjectRoute.ComponentLossRoute {
       return EmptyHTML()
     case .delete(let id):
       return await view(on: request, projectID: projectID) {
-        _ = try await database.componentLoss.delete(id)
+        _ = try await database.componentLosses.delete(id)
       }
     case .submit(let form):
       return await view(on: request, projectID: projectID) {
-        _ = try await database.componentLoss.create(form)
+        _ = try await database.componentLosses.create(form)
       }
 
     case .update(let id, let form):
       return await view(on: request, projectID: projectID) {
-        _ = try await database.componentLoss.update(id, form)
+        _ = try await database.componentLosses.update(id, form)
       }
     }
   }
@@ -416,32 +437,21 @@ extension SiteRoute.View.ProjectRoute.ComponentLossRoute {
   ) async -> AnySendableHTML {
 
     @Dependency(\.database) var database
-    @Dependency(\.manualD) var manualD
+    @Dependency(\.projectClient) var projectClient
 
     return await request.view {
       await ResultView {
         try await catching()
-
-        let equipment = try await database.equipment.fetch(projectID)
-        let componentLosses = try await database.componentLoss.fetch(projectID)
-        let lengths = try await database.effectiveLength.fetchMax(projectID)
-
         return (
           try await database.projects.getCompletedSteps(projectID),
-          componentLosses,
-          lengths,
-          try await manualD.frictionRate(
-            equipmentInfo: equipment,
-            componentLosses: componentLosses,
-            effectiveLength: lengths
-          )
+          try await projectClient.frictionRate(projectID)
         )
-      } onSuccess: { (steps, losses, lengths, frictionRate) in
+      } onSuccess: { (steps, response) in
         ProjectView(projectID: projectID, activeTab: .frictionRate, completedSteps: steps) {
           FrictionRateView(
-            componentLosses: losses,
-            equivalentLengths: lengths,
-            frictionRateResponse: frictionRate
+            componentLosses: response.componentLosses,
+            equivalentLengths: response.equivalentLengths,
+            frictionRate: response.frictionRate
           )
         }
 
@@ -463,7 +473,7 @@ extension SiteRoute.View.ProjectRoute.EquivalentLengthRoute {
 
     case .delete(let id):
       return await ResultView {
-        try await database.effectiveLength.delete(id)
+        try await database.equivalentLengths.delete(id)
       }
 
     case .index:
@@ -480,16 +490,16 @@ extension SiteRoute.View.ProjectRoute.EquivalentLengthRoute {
 
     case .update(let id, let form):
       return await view(on: request, projectID: projectID) {
-        _ = try await database.effectiveLength.update(id, .init(form: form, projectID: projectID))
+        _ = try await database.equivalentLengths.update(id, .init(form: form, projectID: projectID))
       }
 
     case .submit(let step):
       switch step {
       case .one(let stepOne):
         return await ResultView {
-          var effectiveLength: EffectiveLength? = nil
+          var effectiveLength: EquivalentLength? = nil
           if let id = stepOne.id {
-            effectiveLength = try await database.effectiveLength.get(id)
+            effectiveLength = try await database.equivalentLengths.get(id)
           }
           return effectiveLength
         } onSuccess: { effectiveLength in
@@ -502,9 +512,9 @@ extension SiteRoute.View.ProjectRoute.EquivalentLengthRoute {
       case .two(let stepTwo):
         return await ResultView {
           request.logger.debug("ViewController: Got step two...")
-          var effectiveLength: EffectiveLength? = nil
+          var effectiveLength: EquivalentLength? = nil
           if let id = stepTwo.id {
-            effectiveLength = try await database.effectiveLength.get(id)
+            effectiveLength = try await database.equivalentLengths.get(id)
           }
           return effectiveLength
         } onSuccess: { effectiveLength in
@@ -514,7 +524,7 @@ extension SiteRoute.View.ProjectRoute.EquivalentLengthRoute {
         }
       case .three(let stepThree):
         return await view(on: request, projectID: projectID) {
-          _ = try await database.effectiveLength.create(
+          _ = try await database.equivalentLengths.create(
             .init(form: stepThree, projectID: projectID)
           )
         }
@@ -535,7 +545,7 @@ extension SiteRoute.View.ProjectRoute.EquivalentLengthRoute {
         try await catching()
         return (
           try await database.projects.getCompletedSteps(projectID),
-          try await database.effectiveLength.fetch(projectID)
+          try await database.equivalentLengths.fetch(projectID)
         )
       } onSuccess: { (steps, equivalentLengths) in
         ProjectView(projectID: projectID, activeTab: .equivalentLength, completedSteps: steps) {
@@ -555,6 +565,7 @@ extension SiteRoute.View.ProjectRoute.DuctSizingRoute {
   ) async -> AnySendableHTML {
     @Dependency(\.database) var database
     @Dependency(\.manualD) var manualD
+    @Dependency(\.projectClient) var projectClient
 
     switch self {
     case .index:
@@ -563,8 +574,7 @@ extension SiteRoute.View.ProjectRoute.DuctSizingRoute {
     case .deleteRectangularSize(let roomID, let request):
       return await ResultView {
         let room = try await database.rooms.deleteRectangularSize(roomID, request.rectangularSizeID)
-        return try await database.calculateDuctSizes(projectID: projectID)
-          .rooms
+        return try await projectClient.calculateRoomDuctSizes(projectID)
           .filter({ $0.roomID == room.id && $0.roomRegister == request.register })
           .first!
       } onSuccess: { room in
@@ -577,8 +587,7 @@ extension SiteRoute.View.ProjectRoute.DuctSizingRoute {
           roomID,
           .init(id: form.id ?? .init(), register: form.register, height: form.height)
         )
-        return try await database.calculateDuctSizes(projectID: projectID)
-          .rooms
+        return try await projectClient.calculateRoomDuctSizes(projectID)
           .filter({ $0.roomID == room.id && $0.roomRegister == form.register })
           .first!
       } onSuccess: { room in
@@ -612,17 +621,18 @@ extension SiteRoute.View.ProjectRoute.DuctSizingRoute {
     catching: @escaping @Sendable () async throws -> Void = {}
   ) async -> AnySendableHTML {
     @Dependency(\.database) var database
+    @Dependency(\.projectClient) var project
 
     return await request.view {
       await ResultView {
         try await catching()
         return (
           try await database.projects.getCompletedSteps(projectID),
-          try await database.calculateDuctSizes(projectID: projectID)
+          try await project.calculateDuctSizes(projectID)
         )
       } onSuccess: { (steps, ducts) in
         ProjectView(projectID: projectID, activeTab: .ductSizing, completedSteps: steps) {
-          DuctSizingView(rooms: ducts.rooms, trunks: ducts.trunks)
+          DuctSizingView(ductSizes: ducts)
         }
       }
     }
@@ -651,11 +661,11 @@ extension SiteRoute.View.UserRoute.Profile {
       return await view(on: request)
     case .submit(let form):
       return await view(on: request) {
-        _ = try await database.userProfile.create(form)
+        _ = try await database.userProfiles.create(form)
       }
     case .update(let id, let updates):
       return await view(on: request) {
-        _ = try await database.userProfile.update(id, updates)
+        _ = try await database.userProfiles.update(id, updates)
       }
     }
   }
@@ -672,7 +682,7 @@ extension SiteRoute.View.UserRoute.Profile {
         let user = try request.currentUser()
         return (
           user,
-          try await database.userProfile.fetch(user.id)
+          try await database.userProfiles.fetch(user.id)
         )
       } onSuccess: { (user, profile) in
         UserView(user: user, profile: profile)

Sources/ViewController/Views/DuctSizing/DuctSizingView.swift

@@ -7,8 +7,7 @@ struct DuctSizingView: HTML, Sendable {
 
   @Environment(ProjectViewValue.$projectID) var projectID
 
-  let rooms: [DuctSizing.RoomContainer]
-  let trunks: [DuctSizing.TrunkContainer]
+  let ductSizes: DuctSizes
 
   var body: some HTML {
     div(.class("space-y-4")) {
@@ -21,13 +20,30 @@ struct DuctSizingView: HTML, Sendable {
             Must complete all the previous sections to display duct sizing calculations.
             """
           )
-          .hidden(when: rooms.count > 0)
+          .hidden(when: ductSizes.rooms.count > 0)
           .attributes(.class("text-error font-bold italic mt-4"))
         }
+
+        div {
+          button(
+            .class("btn btn-primary"),
+            .hx.get(route: .project(.detail(projectID, .pdf))),
+            .hx.ext("htmx-download"),
+            .hx.swap(.none),
+            .hx.indicator()
+          ) {
+            span { "PDF" }
+            Indicator()
+          }
+          // div {
+          //   Indicator()
+          // }
+        }
+
       }
 
-      if rooms.count != 0 {
-        RoomsTable(rooms: rooms)
+      if ductSizes.rooms.count != 0 {
+        RoomsTable(rooms: ductSizes.rooms)
 
         PageTitleRow {
           PageTitle {
@@ -42,13 +58,13 @@ struct DuctSizingView: HTML, Sendable {
             .tooltip("Add trunk / runout")
         }
 
-        if trunks.count > 0 {
-          TrunkTable(trunks: trunks, rooms: rooms)
+        if ductSizes.trunks.count > 0 {
+          TrunkTable(ductSizes: ductSizes)
         }
 
       }
 
-      TrunkSizeForm(rooms: rooms, dismiss: true)
+      TrunkSizeForm(rooms: ductSizes.rooms, dismiss: true)
     }
   }