Merge branch 'feat-pdf'

.gitea/workflows/release.yaml

@@ -0,0 +1,65 @@
+name: Create and publish a Docker image
+
+# Configures this workflow to run every time a change is pushed to the branch called `release`.
+on:
+  push:
+    # branches: ['main']
+    tags:
+      - '*.*.*'
+  workflow_dispatch:
+
+# Defines two custom environment variables for the workflow. These are used for the Container registry domain,
+# and a name for the Docker image that this workflow builds.
+env:
+  REGISTRY: git.housh.dev
+  IMAGE_NAME: ${{ gitea.repository }}
+
+# There is a single job in this workflow. It's configured to run on the latest available version of Ubuntu.
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    # Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job.
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      # Uses the `docker/login-action` action to log in to the Container registry registry using the account
+      # and password that will publish the packages. Once published, the packages are scoped to the account defined here.
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ gitea.actor }}
+          password: ${{ secrets.CONTAINER_TOKEN }}
+      # This step uses [docker/metadata-action](https://github.com/docker/metadata-action#about) to extract tags and labels
+      # that will be applied to the specified image. The `id` "meta" allows the output of this step to be referenced in a
+      # subsequent step. The `images` value provides the base name for the tags and labels.
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=semver,pattern={{version}}
+            type=sha
+            type=raw,value=prod
+      # This step uses the `docker/build-push-action` action to build the image, based on your repository's `Dockerfile`. If
+      # the build succeeds, it pushes the image to GitHub Packages. It uses the `context` parameter to define the build's context
+      # as the set of files located in the specified path. For more information, see "[Usage](https://github.com/docker/build-push-action#usage)"
+      # in the README of the `docker/build-push-action` repository.
+      # It uses the `tags` and `labels` parameters to tag and label the image with the output from the "meta" step.
+      - name: Build and push Docker image
+        id: push
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          context: .
+          file: docker/Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+

.gitignore

@@ -9,3 +9,7 @@ DerivedData/
 .swift-version
 node_modules/
 tailwindcss
+.envrc
+*.pdf
+.env
+.env*

Package.resolved

@@ -1,5 +1,5 @@
 {
-  "originHash" : "5d6dad57209ac74e3c47d8e8eb162768b81c9e63e15df87d29019d46a13cfec2",
+  "originHash" : "c3efcfd33bc1490f59ae406e4e5292027b2d01cafee9fc625652213505df50fb",
   "pins" : [
     {
       "identity" : "async-http-client",
@@ -226,6 +226,15 @@
         "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 +370,15 @@
         "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",

Package.swift

@@ -7,7 +7,13 @@ let package = Package(
   products: [
     .executable(name: "App", targets: ["App"]),
     .library(name: "ApiController", targets: ["ApiController"]),
+    .library(name: "AuthClient", targets: ["AuthClient"]),
     .library(name: "DatabaseClient", targets: ["DatabaseClient"]),
+    .library(name: "EnvClient", targets: ["EnvClient"]),
+    .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"]),
@@ -19,6 +25,7 @@ let package = Package(
     .package(url: "https://github.com/vapor/fluent-sqlite-driver.git", from: "4.6.0"),
     .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-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"),
@@ -31,6 +38,7 @@ let package = Package(
       name: "App",
       dependencies: [
         .target(name: "ApiController"),
+        .target(name: "AuthClient"),
         .target(name: "DatabaseClient"),
         .target(name: "ViewController"),
         .product(name: "Dependencies", package: "swift-dependencies"),
@@ -53,6 +61,15 @@ let package = Package(
         .product(name: "Vapor", package: "vapor"),
       ]
     ),
+    .target(
+      name: "AuthClient",
+      dependencies: [
+        .target(name: "DatabaseClient"),
+        .target(name: "ManualDCore"),
+        .product(name: "Dependencies", package: "swift-dependencies"),
+        .product(name: "DependenciesMacros", package: "swift-dependencies"),
+      ]
+    ),
     .target(
       name: "DatabaseClient",
       dependencies: [
@@ -63,10 +80,66 @@ let package = Package(
         .product(name: "Vapor", package: "vapor"),
       ]
     ),
+
+    .target(
+      name: "EnvClient",
+      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: "EnvClient"),
+        .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: "Dependencies", package: "swift-dependencies"),
+        .product(name: "Fluent", package: "fluent"),
         .product(name: "URLRouting", package: "swift-url-routing"),
         .product(name: "CasePaths", package: "swift-case-paths"),
       ]
@@ -103,6 +176,11 @@ let package = Package(
     .target(
       name: "ViewController",
       dependencies: [
+        .target(name: "AuthClient"),
+        .target(name: "DatabaseClient"),
+        .target(name: "PdfClient"),
+        .target(name: "ProjectClient"),
+        .target(name: "ManualDClient"),
         .target(name: "ManualDCore"),
         .target(name: "Styleguide"),
         .product(name: "Dependencies", package: "swift-dependencies"),
@@ -112,5 +190,15 @@ 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

@@ -1,5 +1,4 @@
 @import "tailwindcss";
 @plugin "daisyui" {
-	themes: light --default, dark --prefersdark, dracula;
+	themes: all;
 }
-

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;
+        }
+    },
+});

Public/site.webmanifest

@@ -0,0 +1 @@
+{"name":"","short_name":"","icons":[{"src":"/android-chrome-192x192.png","sizes":"192x192","type":"image/png"},{"src":"/android-chrome-512x512.png","sizes":"512x512","type":"image/png"}],"theme_color":"#ffffff","background_color":"#ffffff","display":"standalone"}

Sources/ApiController/Live.swift

@@ -31,6 +31,15 @@ extension SiteRoute.Api.ProjectRoute {
     case .delete(let id):
       try await database.projects.delete(id)
       return nil
+    case .detail(let id, let route):
+      switch route {
+      case .index:
+        return try await database.projects.detail(id)
+      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)")

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

@@ -1,12 +1,14 @@
 import ApiController
+import AuthClient
 import DatabaseClient
 import Dependencies
+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
@@ -29,9 +31,12 @@ struct DependenciesMiddleware: AsyncMiddleware {
     try await values.yield {
       try await withDependencies {
         $0.apiController = apiController
+        $0.authClient = .live(on: request)
         $0.database = database
         // $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

@@ -6,19 +6,18 @@ import Vapor
 private let viewRouteMiddleware: [any Middleware] = [
   UserPasswordAuthenticator(),
   UserSessionAuthenticator(),
-  User.redirectMiddleware(path: "/login"),
+  User.redirectMiddleware { req in
+    "/login?next=\(req.url.string)"
+  },
 ]
 
 extension SiteRoute.View {
   var middleware: [any Middleware]? {
     switch self {
-    case .project,
-      .frictionRate,
-      .effectiveLength,
-      .room:
-      return viewRouteMiddleware
-    case .login, .signup:
+    case .login, .signup, .test:
       return nil
+    case .project, .user:
+      return viewRouteMiddleware
     }
   }
 }

Sources/App/configure.swift

@@ -5,6 +5,7 @@ import Fluent
 import FluentSQLiteDriver
 import ManualDCore
 import NIOSSL
+import ProjectClient
 import Vapor
 import VaporElementary
 @preconcurrency import VaporRouting
@@ -65,7 +66,7 @@ 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
@@ -111,6 +112,8 @@ extension SiteRoute {
   }
 }
 
+extension DuctSizes: Content {}
+
 @Sendable
 private func siteHandler(
   request: Request,
@@ -118,12 +121,17 @@ private func siteHandler(
 ) 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)
   }

Sources/AuthClient/Interface.swift

@@ -0,0 +1,51 @@
+import DatabaseClient
+import Dependencies
+import DependenciesMacros
+import ManualDCore
+import Vapor
+
+extension DependencyValues {
+  public var authClient: AuthClient {
+    get { self[AuthClient.self] }
+    set { self[AuthClient.self] = newValue }
+  }
+}
+
+@DependencyClient
+public struct AuthClient: Sendable {
+  public var createAndLogin: @Sendable (User.Create) async throws -> User
+  public var currentUser: @Sendable () throws -> User
+  public var login: @Sendable (User.Login) async throws -> 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/DatabaseClient/ComponentPressureLoss.swift

@@ -10,8 +10,11 @@ extension DatabaseClient {
     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 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
   }
 }
 
@@ -34,18 +37,26 @@ extension DatabaseClient.ComponentLoss {
         try await model.delete(on: database)
       },
       fetch: { projectID in
-        guard
-          let model = try await ComponentLossModel.query(on: database)
-            .filter("projectID", .equal, projectID)
-            .first()
-        else {
-          throw NotFoundError()
-        }
-        return try model.toDTO()
+        try await ComponentLossModel.query(on: database)
+          .with(\.$project)
+          .filter(\.$project.$id, .equal, projectID)
+          .all()
+          .map { try $0.toDTO() }
 
       },
       get: { id in
         try await ComponentLossModel.find(id, on: database).map { try $0.toDTO() }
+      },
+      update: { id, updates in
+        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)
+        }
+        return try model.toDTO()
       }
     )
   }
@@ -71,6 +82,24 @@ extension ComponentPressureLoss.Create {
   }
 }
 
+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 {
   struct Migrate: AsyncMigration {
     let name = "CreateComponentLoss"
@@ -82,8 +111,10 @@ extension ComponentPressureLoss {
         .field("value", .double, .required)
         .field("createdAt", .datetime)
         .field("updatedAt", .datetime)
-        .field("projectID", .uuid, .required, .references(ProjectModel.schema, "id"))
-        .unique(on: "projectID", "name")
+        .field(
+          "projectID", .uuid, .required, .references(ProjectModel.schema, "id", onDelete: .cascade)
+        )
+        // .unique(on: "projectID", "name")
         .create()
     }
 
@@ -143,4 +174,13 @@ final class ComponentLossModel: Model, @unchecked Sendable {
       updatedAt: updatedAt!
     )
   }
+
+  func applyUpdates(_ updates: ComponentPressureLoss.Update) {
+    if let name = updates.name, name != self.name {
+      self.name = name
+    }
+    if let value = updates.value, value != self.value {
+      self.value = value
+    }
+  }
 }

Sources/DatabaseClient/EffectiveLength.swift

@@ -9,8 +9,11 @@ extension DatabaseClient {
   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 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
   }
 }
 
@@ -31,18 +34,41 @@ extension DatabaseClient.EffectiveLengthClient: TestDependencyKey {
         try await model.delete(on: database)
       },
       fetch: { projectID in
-        guard
-          let model = try await EffectiveLengthModel.query(on: database)
-            .filter("projectID", .equal, projectID)
-            .first()
-        else {
-          throw NotFoundError()
-        }
+        try await EffectiveLengthModel.query(on: database)
+          .with(\.$project)
+          .filter(\.$project.$id, .equal, projectID)
+          .all()
+          .map { try $0.toDTO() }
+      },
+      fetchMax: { projectID in
+        let effectiveLengths = try await EffectiveLengthModel.query(on: database)
+          .with(\.$project)
+          .filter(\.$project.$id, .equal, projectID)
+          .all()
+          .map { try $0.toDTO() }
+
+        return .init(
+          supply: effectiveLengths.filter({ $0.type == .supply })
+            .sorted(by: { $0.totalEquivalentLength > $1.totalEquivalentLength })
+            .first,
+          return: effectiveLengths.filter({ $0.type == .return })
+            .sorted(by: { $0.totalEquivalentLength > $1.totalEquivalentLength })
+            .first
+        )
 
-        return try model.toDTO()
       },
       get: { id in
         try await EffectiveLengthModel.find(id, on: database).map { try $0.toDTO() }
+      },
+      update: { id, updates in
+        guard let model = try await EffectiveLengthModel.find(id, on: database) else {
+          throw NotFoundError()
+        }
+        try model.applyUpdates(updates)
+        if model.hasChanges {
+          try await model.save(on: database)
+        }
+        return try model.toDTO()
       }
     )
   }
@@ -82,7 +108,9 @@ extension EffectiveLength {
         .field("groups", .data)
         .field("createdAt", .datetime)
         .field("updatedAt", .datetime)
-        .field("projectID", .uuid, .required, .references(ProjectModel.schema, "id"))
+        .field(
+          "projectID", .uuid, .required, .references(ProjectModel.schema, "id", onDelete: .cascade)
+        )
         .unique(on: "projectID", "name", "type")
         .create()
     }
@@ -157,4 +185,19 @@ final class EffectiveLengthModel: Model, @unchecked Sendable {
       updatedAt: updatedAt!
     )
   }
+
+  func applyUpdates(_ updates: EffectiveLength.Update) throws {
+    if let name = updates.name, name != self.name {
+      self.name = name
+    }
+    if let type = updates.type, type.rawValue != self.type {
+      self.type = type.rawValue
+    }
+    if let straightLengths = updates.straightLengths, straightLengths != self.straightLengths {
+      self.straightLengths = straightLengths
+    }
+    if let groups = updates.groups {
+      self.groups = try JSONEncoder().encode(groups)
+    }
+  }
 }

Sources/DatabaseClient/Equipment.swift

@@ -11,6 +11,8 @@ extension DatabaseClient {
     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
   }
 }
 
@@ -38,12 +40,23 @@ extension DatabaseClient.Equipment {
             .filter("projectID", .equal, projectId)
             .first()
         else {
-          throw NotFoundError()
+          return nil
         }
         return try model.toDTO()
       },
       get: { id in
         try await EquipmentModel.find(id, on: database).map { try $0.toDTO() }
+      },
+      update: { id, updates in
+        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)
+        }
+        return try model.toDTO()
       }
     )
   }
@@ -77,6 +90,30 @@ extension EquipmentInfo.Create {
   }
 }
 
+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 {
 
   struct Migrate: AsyncMigration {
@@ -91,7 +128,9 @@ extension EquipmentInfo {
         .field("coolingCFM", .int16, .required)
         .field("createdAt", .datetime)
         .field("updatedAt", .datetime)
-        .field("projectID", .uuid, .required, .references(ProjectModel.schema, "id"))
+        .field(
+          "projectID", .uuid, .required, .references(ProjectModel.schema, "id", onDelete: .cascade)
+        )
         .unique(on: "projectID")
         .create()
     }
@@ -159,4 +198,16 @@ final class EquipmentModel: Model, @unchecked Sendable {
       updatedAt: updatedAt!
     )
   }
+
+  func applyUpdates(_ updates: EquipmentInfo.Update) {
+    if let staticPressure = updates.staticPressure {
+      self.staticPressure = staticPressure
+    }
+    if let heatingCFM = updates.heatingCFM {
+      self.heatingCFM = heatingCFM
+    }
+    if let coolingCFM = updates.coolingCFM {
+      self.coolingCFM = coolingCFM
+    }
+  }
 }

Sources/DatabaseClient/Errors.swift

@@ -1,5 +1,6 @@
 import Foundation
 
+// TODO: Move to ManualDCore
 public struct ValidationError: Error {
   public let message: String
 
@@ -8,4 +9,6 @@ public struct ValidationError: Error {
   }
 }
 
-public struct NotFoundError: Error {}
+public struct NotFoundError: Error {
+  public init() {}
+}

Sources/DatabaseClient/Interface.swift

@@ -19,6 +19,8 @@ public struct DatabaseClient: Sendable {
   public var componentLoss: ComponentLoss
   public var effectiveLength: EffectiveLengthClient
   public var users: Users
+  public var userProfile: UserProfile
+  public var trunkSizes: TrunkSizes
 }
 
 extension DatabaseClient: TestDependencyKey {
@@ -29,7 +31,9 @@ extension DatabaseClient: TestDependencyKey {
     equipment: .testValue,
     componentLoss: .testValue,
     effectiveLength: .testValue,
-    users: .testValue
+    users: .testValue,
+    userProfile: .testValue,
+    trunkSizes: .testValue
   )
 
   public static func live(database: any Database) -> Self {
@@ -40,7 +44,9 @@ extension DatabaseClient: TestDependencyKey {
       equipment: .live(database: database),
       componentLoss: .live(database: database),
       effectiveLength: .live(database: database),
-      users: .live(database: database)
+      users: .live(database: database),
+      userProfile: .live(database: database),
+      trunkSizes: .live(database: database)
     )
   }
 }
@@ -49,6 +55,10 @@ extension DatabaseClient {
   @DependencyClient
   public struct Migrations: Sendable {
     public var run: @Sendable () async throws -> [any AsyncMigration]
+
+    public func callAsFunction() async throws -> [any AsyncMigration] {
+      try await self.run()
+    }
   }
 }
 
@@ -60,13 +70,15 @@ extension DatabaseClient.Migrations: DependencyKey {
   public static let liveValue = Self(
     run: {
       [
+        Project.Migrate(),
         User.Migrate(),
         User.Token.Migrate(),
-        Project.Migrate(),
+        User.Profile.Migrate(),
         ComponentPressureLoss.Migrate(),
         EquipmentInfo.Migrate(),
         Room.Migrate(),
         EffectiveLength.Migrate(),
+        TrunkSize.Migrate(),
       ]
     }
   )

Sources/DatabaseClient/Projects.swift

@@ -9,8 +9,12 @@ extension DatabaseClient {
   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
   }
 }
 
@@ -30,9 +34,95 @@ extension DatabaseClient.Projects: TestDependencyKey {
         }
         try await model.delete(on: database)
       },
+      detail: { id in
+        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 == id)
+            .first()
+        else {
+          throw NotFoundError()
+        }
+
+        // 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()
+
+        var equivalentLengthsCompleted = false
+
+        if equivalentLengths.filter({ $0.type == "supply" }).first != nil,
+          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.$id == id)
+          .first()
+
+        return .init(
+          equipmentInfo: equipmentInfo != nil,
+          rooms: roomsCount > 0,
+          equivalentLength: equivalentLengthsCompleted,
+          frictionRate: componentLosses > 0
+        )
+      },
+      getSensibleHeatRatio: { id in
+        guard
+          let shr = try await ProjectModel.query(on: database)
+            .field(\.$id)
+            .field(\.$sensibleHeatRatio)
+            .filter(\.$id == id)
+            .first()
+        else {
+          throw NotFoundError()
+        }
+        return shr.sensibleHeatRatio
+      },
       fetch: { userID, request in
         try await ProjectModel.query(on: database)
           .sort(\.$createdAt, .descending)
@@ -40,6 +130,17 @@ extension DatabaseClient.Projects: TestDependencyKey {
           .filter(\.$user.$id == userID)
           .paginate(request)
           .map { try $0.toDTO() }
+      },
+      update: { id, updates in
+        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)
+        }
+        return try model.toDTO()
       }
     )
   }
@@ -75,6 +176,53 @@ extension Project.Create {
     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.")
+      }
+    }
   }
 }
 
@@ -90,6 +238,7 @@ extension Project {
         .field("city", .string, .required)
         .field("state", .string, .required)
         .field("zipCode", .string, .required)
+        .field("sensibleHeatRatio", .double)
         .field("createdAt", .datetime)
         .field("updatedAt", .datetime)
         .field("userID", .uuid, .required, .references(UserModel.schema, "id"))
@@ -126,6 +275,9 @@ final class ProjectModel: Model, @unchecked Sendable {
   @Field(key: "zipCode")
   var zipCode: String
 
+  @Field(key: "sensibleHeatRatio")
+  var sensibleHeatRatio: Double?
+
   @Timestamp(key: "createdAt", on: .create, format: .iso8601)
   var createdAt: Date?
 
@@ -135,6 +287,18 @@ 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
 
@@ -147,6 +311,7 @@ final class ProjectModel: Model, @unchecked Sendable {
     city: String,
     state: String,
     zipCode: String,
+    sensibleHeatRatio: Double? = nil,
     userID: User.ID,
     createdAt: Date? = nil,
     updatedAt: Date? = nil
@@ -155,9 +320,9 @@ final class ProjectModel: Model, @unchecked Sendable {
     self.name = name
     self.streetAddress = streetAddress
     self.city = city
-    self.city = city
     self.state = state
     self.zipCode = zipCode
+    self.sensibleHeatRatio = sensibleHeatRatio
     $user.id = userID
     self.createdAt = createdAt
     self.updatedAt = updatedAt
@@ -171,8 +336,32 @@ final class ProjectModel: Model, @unchecked Sendable {
       city: city,
       state: state,
       zipCode: zipCode,
+      sensibleHeatRatio: sensibleHeatRatio,
       createdAt: createdAt!,
       updatedAt: updatedAt!
     )
   }
+
+  func applyUpdates(_ updates: Project.Update) {
+    if let name = updates.name, name != self.name {
+      self.name = name
+    }
+    if let streetAddress = updates.streetAddress, streetAddress != self.streetAddress {
+      self.streetAddress = streetAddress
+    }
+    if let city = updates.city, city != self.city {
+      self.city = city
+    }
+    if let state = updates.state, state != self.state {
+      self.state = state
+    }
+    if let zipCode = updates.zipCode, zipCode != self.zipCode {
+      self.zipCode = zipCode
+    }
+    if let sensibleHeatRatio = updates.sensibleHeatRatio,
+      sensibleHeatRatio != self.sensibleHeatRatio
+    {
+      self.sensibleHeatRatio = sensibleHeatRatio
+    }
+  }
 }

Sources/DatabaseClient/RectangularDuct.swift

@@ -0,0 +1,175 @@
+// 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/DatabaseClient/Rooms.swift

@@ -9,15 +9,18 @@ extension DatabaseClient {
   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, 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
   }
 }
 
 extension DatabaseClient.Rooms: TestDependencyKey {
   public static let testValue = Self()
-}
 
-extension DatabaseClient.Rooms {
   public static func live(database: any Database) -> Self {
     .init(
       create: { request in
@@ -31,8 +34,53 @@ extension DatabaseClient.Rooms {
         }
         try await model.delete(on: database)
       },
+      deleteRectangularSize: { roomID, rectangularDuctID in
+        guard let model = try await RoomModel.find(roomID, on: database) else {
+          throw NotFoundError()
+        }
+        model.rectangularSizes?.removeAll {
+          $0.id == rectangularDuctID
+        }
+        if model.hasChanges {
+          try await model.save(on: database)
+        }
+        return try model.toDTO()
+      },
       get: { id in
         try await RoomModel.find(id, on: database).map { try $0.toDTO() }
+      },
+      fetch: { projectID in
+        try await RoomModel.query(on: database)
+          .with(\.$project)
+          .filter(\.$project.$id, .equal, projectID)
+          .sort(\.$name, .ascending)
+          .all()
+          .map { try $0.toDTO() }
+      },
+      update: { id, updates in
+        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)
+        }
+        return try model.toDTO()
+      },
+      updateRectangularSize: { id, size in
+        guard let model = try await RoomModel.find(id, on: database) else {
+          throw NotFoundError()
+        }
+        var rectangularSizes = model.rectangularSizes ?? []
+        rectangularSizes.removeAll {
+          $0.id == size.id
+        }
+        rectangularSizes.append(size)
+        model.rectangularSizes = rectangularSizes
+        try await model.save(on: database)
+        return try model.toDTO()
       }
     )
   }
@@ -62,8 +110,10 @@ extension Room.Create {
     guard coolingTotal >= 0 else {
       throw ValidationError("Room cooling total should not be less than 0.")
     }
-    guard coolingSensible >= 0 else {
-      throw ValidationError("Room cooling sensible 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.")
@@ -71,6 +121,37 @@ extension Room.Create {
   }
 }
 
+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 {
   struct Migrate: AsyncMigration {
     let name = "CreateRoom"
@@ -81,9 +162,14 @@ extension Room {
         .field("name", .string, .required)
         .field("heatingLoad", .double, .required)
         .field("coolingTotal", .double, .required)
-        .field("coolingSensible", .double, .required)
+        .field("coolingSensible", .double)
         .field("registerCount", .int8, .required)
-        .field("projectID", .uuid, .required, .references(ProjectModel.schema, "id"))
+        .field("rectangularSizes", .array)
+        .field("createdAt", .datetime)
+        .field("updatedAt", .datetime)
+        .field(
+          "projectID", .uuid, .required, .references(ProjectModel.schema, "id", onDelete: .cascade)
+        )
         .unique(on: "projectID", "name")
         .create()
     }
@@ -111,11 +197,14 @@ final class RoomModel: Model, @unchecked Sendable {
   var coolingTotal: Double
 
   @Field(key: "coolingSensible")
-  var coolingSensible: Double
+  var coolingSensible: Double?
 
   @Field(key: "registerCount")
   var registerCount: Int
 
+  @Field(key: "rectangularSizes")
+  var rectangularSizes: [Room.RectangularSize]?
+
   @Timestamp(key: "createdAt", on: .create, format: .iso8601)
   var createdAt: Date?
 
@@ -132,8 +221,9 @@ final class RoomModel: Model, @unchecked Sendable {
     name: String,
     heatingLoad: Double,
     coolingTotal: Double,
-    coolingSensible: Double,
+    coolingSensible: Double? = nil,
     registerCount: Int,
+    rectangularSizes: [Room.RectangularSize]? = nil,
     createdAt: Date? = nil,
     updatedAt: Date? = nil,
     projectID: Project.ID
@@ -144,6 +234,7 @@ final class RoomModel: Model, @unchecked Sendable {
     self.coolingTotal = coolingTotal
     self.coolingSensible = coolingSensible
     self.registerCount = registerCount
+    self.rectangularSizes = rectangularSizes
     self.createdAt = createdAt
     self.updatedAt = updatedAt
     $project.id = projectID
@@ -155,11 +246,36 @@ final class RoomModel: Model, @unchecked Sendable {
       projectID: $project.id,
       name: name,
       heatingLoad: heatingLoad,
-      coolingLoad: .init(total: coolingTotal, sensible: coolingSensible),
+      coolingTotal: coolingTotal,
+      coolingSensible: coolingSensible,
       registerCount: registerCount,
+      rectangularSizes: rectangularSizes,
       createdAt: createdAt!,
       updatedAt: updatedAt!
     )
+  }
+
+  func applyUpdates(_ updates: Room.Update) {
+
+    if let name = updates.name, name != self.name {
+      self.name = name
+    }
+    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 registerCount = updates.registerCount, registerCount != self.registerCount {
+      self.registerCount = registerCount
+    }
+    if let rectangularSizes = updates.rectangularSizes, rectangularSizes != self.rectangularSizes {
+      self.rectangularSizes = rectangularSizes
+    }
 
   }
+
 }

Sources/DatabaseClient/TrunkSizes.swift

@@ -0,0 +1,369 @@
+import Dependencies
+import DependenciesMacros
+import Fluent
+import Foundation
+import ManualDCore
+
+extension DatabaseClient {
+  @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
+  }
+}
+
+extension DatabaseClient.TrunkSizes: TestDependencyKey {
+  public static let testValue = Self()
+
+  public static func live(database: any Database) -> Self {
+    .init(
+      create: { request in
+        try request.validate()
+
+        let trunk = request.toModel()
+        var roomProxies = [TrunkSize.RoomProxy]()
+
+        try await trunk.save(on: database)
+
+        for (roomID, registers) in request.rooms {
+          guard let room = try await RoomModel.find(roomID, on: database) else {
+            throw NotFoundError()
+          }
+          let model = try TrunkRoomModel(
+            trunkID: trunk.requireID(),
+            roomID: room.requireID(),
+            registers: registers,
+            type: request.type
+          )
+          try await model.save(on: database)
+          roomProxies.append(
+            .init(room: try room.toDTO(), registers: registers)
+          )
+        }
+
+        return try .init(
+          id: trunk.requireID(),
+          projectID: trunk.$project.id,
+          type: .init(rawValue: trunk.type)!,
+          rooms: roomProxies
+        )
+      },
+      delete: { id in
+        guard let model = try await TrunkModel.find(id, on: database) else {
+          throw NotFoundError()
+        }
+        try await model.delete(on: database)
+      },
+      fetch: { projectID in
+        try await TrunkModel.query(on: database)
+          .with(\.$project)
+          .with(\.$rooms, { $0.with(\.$room) })
+          .filter(\.$project.$id == projectID)
+          .all()
+          .toDTO()
+      },
+      get: { id in
+        guard
+          let model =
+            try await TrunkModel
+            .query(on: database)
+            .with(\.$rooms, { $0.with(\.$room) })
+            .filter(\.$id == id)
+            .first()
+        else {
+          return nil
+        }
+        return try model.toDTO()
+      },
+      update: { id, updates in
+        guard
+          let model =
+            try await TrunkModel
+            .query(on: database)
+            .with(\.$rooms, { $0.with(\.$room) })
+            .filter(\.$id == id)
+            .first()
+        else {
+          throw NotFoundError()
+        }
+        try updates.validate()
+        try await model.applyUpdates(updates, on: database)
+        return try model.toDTO()
+      }
+    )
+  }
+}
+
+extension 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.")
+      }
+    }
+  }
+
+  func toModel() -> TrunkModel {
+    .init(
+      projectID: projectID,
+      type: type,
+      height: height,
+      name: name
+    )
+  }
+}
+
+extension 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 TrunkSize {
+
+  struct Migrate: AsyncMigration {
+    let name = "CreateTrunkSize"
+
+    func prepare(on database: any Database) async throws {
+      try await database.schema(TrunkModel.schema)
+        .id()
+        .field("height", .int8)
+        .field("name", .string)
+        .field("type", .string, .required)
+        .field(
+          "projectID", .uuid, .required, .references(ProjectModel.schema, "id", onDelete: .cascade)
+        )
+        .create()
+
+      try await database.schema(TrunkRoomModel.schema)
+        .id()
+        .field("registers", .array(of: .int), .required)
+        .field("type", .string, .required)
+        .field(
+          "trunkID", .uuid, .required, .references(TrunkModel.schema, "id", onDelete: .cascade)
+        )
+        .field(
+          "roomID", .uuid, .required, .references(RoomModel.schema, "id", onDelete: .cascade)
+        )
+        .unique(on: "trunkID", "roomID", "type")
+        .create()
+    }
+
+    func revert(on database: any Database) async throws {
+      try await database.schema(TrunkRoomModel.schema).delete()
+      try await database.schema(TrunkModel.schema).delete()
+    }
+  }
+}
+
+// Pivot table for associating rooms and trunks.
+final class TrunkRoomModel: Model, @unchecked Sendable {
+
+  static let schema = "room+trunk"
+
+  @ID(key: .id)
+  var id: UUID?
+
+  @Parent(key: "trunkID")
+  var trunk: TrunkModel
+
+  @Parent(key: "roomID")
+  var room: RoomModel
+
+  @Field(key: "registers")
+  var registers: [Int]
+
+  @Field(key: "type")
+  var type: String
+
+  init() {}
+
+  init(
+    id: UUID? = nil,
+    trunkID: TrunkModel.IDValue,
+    roomID: RoomModel.IDValue,
+    registers: [Int],
+    type: TrunkSize.TrunkType
+  ) {
+    self.id = id
+    $trunk.id = trunkID
+    $room.id = roomID
+    self.registers = registers
+    self.type = type.rawValue
+  }
+
+  func toDTO() throws -> TrunkSize.RoomProxy {
+    // guard let room = try await RoomModel.find($room.id, on: database) else {
+    //   throw NotFoundError()
+    // }
+    return .init(
+      room: try room.toDTO(),
+      registers: registers
+    )
+  }
+
+}
+
+final class TrunkModel: Model, @unchecked Sendable {
+
+  static let schema = "trunk"
+
+  @ID(key: .id)
+  var id: UUID?
+
+  @Parent(key: "projectID")
+  var project: ProjectModel
+
+  @OptionalField(key: "height")
+  var height: Int?
+
+  @Field(key: "type")
+  var type: String
+
+  @OptionalField(key: "name")
+  var name: String?
+
+  @Children(for: \.$trunk)
+  var rooms: [TrunkRoomModel]
+
+  init() {}
+
+  init(
+    id: UUID? = nil,
+    projectID: Project.ID,
+    type: TrunkSize.TrunkType,
+    height: Int? = nil,
+    name: String? = nil
+  ) {
+    self.id = id
+    $project.id = projectID
+    self.height = height
+    self.type = type.rawValue
+    self.name = name
+  }
+
+  func toDTO() throws -> TrunkSize {
+    // let rooms = try await withThrowingTaskGroup(of: TrunkSize.RoomProxy.self) { group in
+    //   for room in self.rooms {
+    //     group.addTask {
+    //       try await room.toDTO(on: database)
+    //     }
+    //   }
+    //
+    //   return try await group.reduce(into: [TrunkSize.RoomProxy]()) {
+    //     $0.append($1)
+    //   }
+    //
+    // }
+
+    let rooms = try rooms.reduce(into: [TrunkSize.RoomProxy]()) {
+      $0.append(try $1.toDTO())
+    }
+
+    return try .init(
+      id: requireID(),
+      projectID: $project.id,
+      type: .init(rawValue: type)!,
+      rooms: rooms,
+      height: height,
+      name: name
+    )
+
+  }
+
+  func applyUpdates(
+    _ updates: TrunkSize.Update,
+    on database: any Database
+  ) async throws {
+    if let type = updates.type, type.rawValue != self.type {
+      self.type = type.rawValue
+    }
+    if let height = updates.height, height != self.height {
+      self.height = height
+    }
+    if let name = updates.name, name != self.name {
+      self.name = name
+    }
+    if hasChanges {
+      try await self.save(on: database)
+    }
+
+    guard let updateRooms = updates.rooms else {
+      return
+    }
+
+    // Update rooms.
+    let rooms = try await TrunkRoomModel.query(on: database)
+      .with(\.$room)
+      .filter(\.$trunk.$id == requireID())
+      .all()
+
+    for (roomID, registers) in updateRooms {
+      if let currRoom = rooms.first(where: { $0.$room.id == roomID }) {
+        database.logger.debug("CURRENT ROOM: \(currRoom.room.name)")
+        if registers != currRoom.registers {
+          database.logger.debug("Updating registers for: \(currRoom.room.name)")
+          currRoom.registers = registers
+        }
+        if currRoom.hasChanges {
+          try await currRoom.save(on: database)
+        }
+      } else {
+        database.logger.debug("CREATING NEW TrunkRoomModel")
+        let newModel = try TrunkRoomModel(
+          trunkID: requireID(),
+          roomID: roomID,
+          registers: registers,
+          type: .init(rawValue: type)!
+        )
+        try await newModel.save(on: database)
+      }
+    }
+
+    let roomsToDelete = rooms.filter {
+      !updateRooms.keys.contains($0.$room.id)
+    }
+
+    for room in roomsToDelete {
+      try await room.delete(on: database)
+    }
+
+    database.logger.debug("DONE WITH UPDATES")
+
+  }
+}
+
+extension Array where Element == TrunkModel {
+
+  func toDTO() throws -> [TrunkSize] {
+    // try await withThrowingTaskGroup(of: TrunkSize.self) { group in
+    //   for model in self {
+    //     group.addTask {
+    //       try await model.toDTO(on: database)
+    //     }
+    //   }
+
+    return try reduce(into: [TrunkSize]()) {
+      $0.append(try $1.toDTO())
+    }
+  }
+  // }
+}

Sources/DatabaseClient/UserProfile.swift

@@ -0,0 +1,283 @@
+import Dependencies
+import DependenciesMacros
+import Fluent
+import ManualDCore
+import Vapor
+
+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 {
+
+  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)
+        return try model.toDTO()
+      },
+      delete: { id in
+        guard let model = try await UserProfileModel.find(id, on: database) else {
+          throw NotFoundError()
+        }
+        try await model.delete(on: database)
+      },
+      fetch: { userID in
+        try await UserProfileModel.query(on: database)
+          .with(\.$user)
+          .filter(\.$user.$id == userID)
+          .first()
+          .map { try $0.toDTO() }
+      },
+      get: { id in
+        try await UserProfileModel.find(id, on: database)
+          .map { try $0.toDTO() }
+      },
+      update: { id, updates in
+        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)
+        }
+        return try model.toDTO()
+      }
+    )
+  }
+}
+
+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,
+      firstName: firstName,
+      lastName: lastName,
+      companyName: companyName,
+      streetAddress: streetAddress,
+      city: city,
+      state: state,
+      zipCode: zipCode,
+      theme: theme
+    )
+  }
+}
+
+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 {
+    let name = "Create UserProfile"
+
+    func prepare(on database: any Database) async throws {
+      try await database.schema(UserProfileModel.schema)
+        .id()
+        .field("firstName", .string, .required)
+        .field("lastName", .string, .required)
+        .field("companyName", .string, .required)
+        .field("streetAddress", .string, .required)
+        .field("city", .string, .required)
+        .field("state", .string, .required)
+        .field("zipCode", .string, .required)
+        .field("theme", .string)
+        .field("userID", .uuid, .references(UserModel.schema, "id", onDelete: .cascade))
+        .field("createdAt", .datetime)
+        .field("updatedAt", .datetime)
+        .unique(on: "userID")
+        .create()
+    }
+
+    func revert(on database: any Database) async throws {
+      try await database.schema(UserProfileModel.schema).delete()
+    }
+  }
+}
+
+final class UserProfileModel: Model, @unchecked Sendable {
+
+  static let schema = "user_profile"
+
+  @ID(key: .id)
+  var id: UUID?
+
+  @Parent(key: "userID")
+  var user: UserModel
+
+  @Field(key: "firstName")
+  var firstName: String
+
+  @Field(key: "lastName")
+  var lastName: String
+
+  @Field(key: "companyName")
+  var companyName: String
+
+  @Field(key: "streetAddress")
+  var streetAddress: String
+
+  @Field(key: "city")
+  var city: String
+
+  @Field(key: "state")
+  var state: String
+
+  @Field(key: "zipCode")
+  var zipCode: String
+
+  @Field(key: "theme")
+  var theme: String?
+
+  @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,
+    userID: User.ID,
+    firstName: String,
+    lastName: String,
+    companyName: String,
+    streetAddress: String,
+    city: String,
+    state: String,
+    zipCode: String,
+    theme: Theme? = nil
+  ) {
+    self.id = id
+    $user.id = userID
+    self.firstName = firstName
+    self.lastName = lastName
+    self.companyName = companyName
+    self.streetAddress = streetAddress
+    self.city = city
+    self.state = state
+    self.zipCode = zipCode
+    self.theme = theme?.rawValue
+  }
+
+  func toDTO() throws -> User.Profile {
+    try .init(
+      id: requireID(),
+      userID: $user.id,
+      firstName: firstName,
+      lastName: lastName,
+      companyName: companyName,
+      streetAddress: streetAddress,
+      city: city,
+      state: state,
+      zipCode: zipCode,
+      theme: self.theme.flatMap(Theme.init),
+      createdAt: createdAt!,
+      updatedAt: updatedAt!
+    )
+  }
+
+  func applyUpdates(_ updates: User.Profile.Update) {
+    if let firstName = updates.firstName, firstName != self.firstName {
+      self.firstName = firstName
+    }
+    if let lastName = updates.lastName, lastName != self.lastName {
+      self.lastName = lastName
+    }
+    if let companyName = updates.companyName, companyName != self.companyName {
+      self.companyName = companyName
+    }
+    if let streetAddress = updates.streetAddress, streetAddress != self.streetAddress {
+      self.streetAddress = streetAddress
+    }
+    if let city = updates.city, city != self.city {
+      self.city = city
+    }
+    if let state = updates.state, state != self.state {
+      self.state = state
+    }
+    if let zipCode = updates.zipCode, zipCode != self.zipCode {
+      self.zipCode = zipCode
+    }
+    if let theme = updates.theme, theme.rawValue != self.theme {
+      self.theme = theme.rawValue
+    }
+  }
+
+}

Sources/DatabaseClient/Users.swift

@@ -80,12 +80,11 @@ extension User {
     func prepare(on database: any Database) async throws {
       try await database.schema(UserModel.schema)
         .id()
-        .field("username", .string, .required)
         .field("email", .string, .required)
         .field("password_hash", .string, .required)
         .field("createdAt", .datetime)
         .field("updatedAt", .datetime)
-        .unique(on: "email", "username")
+        .unique(on: "email")
         .create()
     }
 
@@ -104,6 +103,8 @@ extension User.Token {
         .id()
         .field("value", .string, .required)
         .field("user_id", .uuid, .required, .references(UserModel.schema, "id"))
+        .field("createdAt", .datetime)
+        .field("updatedAt", .datetime)
         .unique(on: "value")
         .create()
     }
@@ -126,13 +127,10 @@ extension User.Create {
 
   func toModel() throws -> UserModel {
     try validate()
-    return try .init(username: username, email: email, passwordHash: User.hashPassword(password))
+    return try .init(email: email, passwordHash: User.hashPassword(password))
   }
 
   func validate() throws {
-    guard !username.isEmpty else {
-      throw ValidationError("Username should not be empty.")
-    }
     guard !email.isEmpty else {
       throw ValidationError("Email should not be empty")
     }
@@ -152,9 +150,6 @@ final class UserModel: Model, @unchecked Sendable {
   @ID(key: .id)
   var id: UUID?
 
-  @Field(key: "username")
-  var username: String
-
   @Field(key: "email")
   var email: String
 
@@ -174,12 +169,10 @@ final class UserModel: Model, @unchecked Sendable {
 
   init(
     id: UUID? = nil,
-    username: String,
     email: String,
     passwordHash: String
   ) {
     self.id = id
-    self.username = username
     self.email = email
     self.passwordHash = passwordHash
   }
@@ -188,7 +181,6 @@ final class UserModel: Model, @unchecked Sendable {
     try .init(
       id: requireID(),
       email: email,
-      username: username,
       createdAt: createdAt!,
       updatedAt: updatedAt!
     )
@@ -237,7 +229,7 @@ final class UserTokenModel: Model, Codable, @unchecked Sendable {
 
 extension User: Authenticatable {}
 extension User: SessionAuthenticatable {
-  public var sessionID: String { username }
+  public var sessionID: String { email }
 }
 
 public struct UserPasswordAuthenticator: AsyncBasicAuthenticator {
@@ -248,7 +240,7 @@ public struct UserPasswordAuthenticator: AsyncBasicAuthenticator {
   public func authenticate(basic: BasicAuthorization, for request: Request) async throws {
     guard
       let user = try await UserModel.query(on: request.db)
-        .filter(\UserModel.$username == basic.username)
+        .filter(\UserModel.$email == basic.username)
         .first(),
       try user.verifyPassword(basic.password)
     else {
@@ -284,7 +276,7 @@ public struct UserSessionAuthenticator: AsyncSessionAuthenticator {
   public func authenticate(sessionID: User.SessionID, for request: Request) async throws {
     guard
       let user = try await UserModel.query(on: request.db)
-        .filter(\UserModel.$username == sessionID)
+        .filter(\UserModel.$email == sessionID)
         .first()
     else {
       throw Abort(.unauthorized)

Sources/EnvClient/Interface.swift

@@ -0,0 +1,74 @@
+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 env: @Sendable () throws -> EnvVars {
+    get { self[EnvClient.self].env }
+    set { self[EnvClient.self].env = newValue }
+  }
+}
+
+@DependencyClient
+struct EnvClient: Sendable {
+  public var env: @Sendable () throws -> EnvVars
+}
+
+/// 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
+
+  public init(
+    pandocPath: String = "/usr/bin/pandoc",
+    pdfEngine: String = "weasyprint"
+  ) {
+    self.pandocPath = pandocPath
+    self.pdfEngine = pdfEngine
+  }
+
+  enum CodingKeys: String, CodingKey {
+    case pandocPath = "PANDOC_PATH"
+    case pdfEngine = "PDF_ENGINE"
+  }
+
+}
+
+extension EnvClient: DependencyKey {
+  static let testValue = Self()
+
+  static let liveValue = Self(env: {
+    // 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(ProcessInfo.processInfo.environment, uniquingKeysWith: { $1 })
+
+    return (try? JSONSerialization.data(withJSONObject: assigned))
+      .flatMap { try? decoder.decode(EnvVars.self, from: $0) }
+      ?? .init()
+  })
+}
+
+private let encoder: JSONEncoder = {
+  JSONEncoder()
+}()
+
+private let decoder: JSONDecoder = {
+  JSONDecoder()
+}()

Sources/FileClient/Interface.swift

@@ -0,0 +1,40 @@
+import Dependencies
+import DependenciesMacros
+import Foundation
+import Vapor
+
+extension DependencyValues {
+  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
+
+  public var writeFile: @Sendable (String, String) async throws -> Void
+  public var removeFile: @Sendable (String) async throws -> Void
+  public var streamFile: @Sendable (String, @escaping OnCompleteHandler) async throws -> Response
+}
+
+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

@@ -1,6 +1,51 @@
 import Foundation
 import ManualDCore
 
+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) -> Double {
+    room.coolingSensiblePerRegister(projectSHR: projectSHR) * Double(actualRegisterCount)
+  }
+}
+
+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) }
+  }
+}
+
 extension ComponentPressureLosses {
   var totalLosses: Double { values.reduce(0) { $0 + $1 } }
 }
@@ -19,6 +64,8 @@ func roundSize(_ size: Double) throws -> Int {
     throw ManualDError(message: "Size should be less than 24.")
   }
 
+  // let size = size.rounded(.toNearestOrEven)
+
   switch size {
   case 0..<4:
     return 4

Sources/ManualDClient/Interface.swift

@@ -1,20 +1,8 @@
 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
-}
-
-extension ManualDClient: TestDependencyKey {
-  public static let testValue = Self()
-}
-
 extension DependencyValues {
   public var manualD: ManualDClient {
     get { self[ManualDClient.self] }
@@ -22,8 +10,25 @@ extension DependencyValues {
   }
 }
 
-// MARK: Duct Size
+/// Performs manual-d duct sizing calculations.
+///
+///
+@DependencyClient
+public struct ManualDClient: Sendable {
+  public var ductSize: @Sendable (DuctSizeRequest) async throws -> DuctSizeResponse
+  public var frictionRate: @Sendable (FrictionRateRequest) async throws -> FrictionRate
+  public var totalEquivalentLength: @Sendable (TotalEquivalentLengthRequest) async throws -> Int
+  public var rectangularSize:
+    @Sendable (RectangularSizeRequest) async throws -> RectangularSizeResponse
+
+}
+
+extension ManualDClient: TestDependencyKey {
+  public static let testValue = Self()
+}
+
 extension ManualDClient {
+
   public struct DuctSizeRequest: Codable, Equatable, Sendable {
     public let designCFM: Int
     public let frictionRate: Double
@@ -39,36 +44,33 @@ extension ManualDClient {
 
   public struct DuctSizeResponse: Codable, Equatable, Sendable {
 
-    public let ductulatorSize: Double
+    public let calculatedSize: Double
     public let finalSize: Int
     public let flexSize: Int
     public let velocity: Int
 
     public init(
-      ductulatorSize: Double,
+      calculatedSize: Double,
       finalSize: Int,
       flexSize: Int,
       velocity: Int
     ) {
-      self.ductulatorSize = ductulatorSize
+      self.calculatedSize = calculatedSize
       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: ComponentPressureLosses
+    public let componentPressureLosses: [ComponentPressureLoss]
     public let totalEffectiveLength: Int
 
     public init(
       externalStaticPressure: Double,
-      componentPressureLosses: ComponentPressureLosses,
+      componentPressureLosses: [ComponentPressureLoss],
       totalEffectiveLength: Int
     ) {
       self.externalStaticPressure = externalStaticPressure
@@ -87,11 +89,8 @@ extension ManualDClient {
       self.frictionRate = frictionRate
     }
   }
-}
 
-// MARK: Total Effective Length
-extension ManualDClient {
-  public struct TotalEffectiveLengthRequest: Codable, Equatable, Sendable {
+  public struct TotalEquivalentLengthRequest: Codable, Equatable, Sendable {
 
     public let trunkLengths: [Int]
     public let runoutLengths: [Int]
@@ -107,11 +106,8 @@ extension ManualDClient {
       self.effectiveLengthGroups = effectiveLengthGroups
     }
   }
-}
 
-// MARK: Equivalent Rectangular Duct
-extension ManualDClient {
-  public struct EquivalentRectangularDuctRequest: Codable, Equatable, Sendable {
+  public struct RectangularSizeRequest: Codable, Equatable, Sendable {
     public let roundSize: Int
     public let height: Int
 
@@ -121,7 +117,7 @@ extension ManualDClient {
     }
   }
 
-  public struct EquivalentRectangularDuctResponse: Codable, Equatable, Sendable {
+  public struct RectangularSizeResponse: Codable, Equatable, Sendable {
     public let height: Int
     public let width: Int
 

Sources/ManualDClient/Live.swift

@@ -13,7 +13,7 @@ extension ManualDClient: DependencyKey {
       let finalSize = try roundSize(ductulatorSize)
       let flexSize = try flexSize(request)
       return .init(
-        ductulatorSize: ductulatorSize,
+        calculatedSize: ductulatorSize,
         finalSize: finalSize,
         flexSize: flexSize,
         velocity: velocity(cfm: request.designCFM, roundSize: finalSize)
@@ -25,36 +25,20 @@ extension ManualDClient: DependencyKey {
         throw ManualDError(message: "Total Effective Length should be greater than 0.")
       }
 
-      let totalComponentLosses = request.componentPressureLosses.totalLosses
+      let totalComponentLosses = request.componentPressureLosses.total
       let availableStaticPressure = request.externalStaticPressure - totalComponentLosses
       let frictionRate = availableStaticPressure * 100.0 / Double(request.totalEffectiveLength)
-      return .init(availableStaticPressure: availableStaticPressure, frictionRate: frictionRate)
+      return .init(availableStaticPressure: availableStaticPressure, value: frictionRate)
     },
-    totalEffectiveLength: { request in
+    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
     },
-    equivalentRectangularDuct: { request in
+    rectangularSize: { request in
       let width = (Double.pi * (pow(Double(request.roundSize) / 2.0, 2.0))) / Double(request.height)
-      // Round the width up or fail (really should never fail since we know the input is a number).
-      guard let widthStr = numberFormatter.string(for: width),
-        let widthInt = Int(widthStr)
-      else {
-        throw ManualDError(
-          message: "Failed to convert to to rectangular duct size, width: \(width)"
-        )
-      }
-      return .init(height: request.height, width: widthInt)
+      return .init(height: request.height, width: Int(width.rounded(.toNearestOrEven)))
     }
   )
 }
-
-private let numberFormatter: NumberFormatter = {
-  let formatter = NumberFormatter()
-  formatter.maximumFractionDigits = 0
-  formatter.minimumFractionDigits = 0
-  formatter.roundingMode = .ceiling
-  return formatter
-}()

Sources/ManualDCore/ComponentPressureLosses.swift

@@ -1,3 +1,4 @@
+import Dependencies
 import Foundation
 
 public struct ComponentPressureLoss: Codable, Equatable, Identifiable, Sendable {
@@ -42,6 +43,35 @@ extension ComponentPressureLoss {
       self.name = name
       self.value = value
     }
+
+    // Return's commonly used default component pressure losses.
+    public static func `default`(projectID: Project.ID) -> [Self] {
+      [
+        .init(projectID: projectID, name: "supply-outlet", value: 0.03),
+        .init(projectID: projectID, name: "return-grille", value: 0.03),
+        .init(projectID: projectID, name: "balancing-damper", value: 0.03),
+      ]
+    }
+  }
+
+  public struct Update: Codable, Equatable, Sendable {
+
+    public let name: String?
+    public let value: Double?
+
+    public init(
+      name: String? = nil,
+      value: Double? = nil
+    ) {
+      self.name = name
+      self.value = value
+    }
+  }
+}
+
+extension Array where Element == ComponentPressureLoss {
+  public var total: Double {
+    reduce(into: 0) { $0 += $1.value }
   }
 }
 
@@ -60,7 +90,61 @@ public typealias ComponentPressureLosses = [String: Double]
     }
   }
 
+  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/DuctSizes.swift

@@ -0,0 +1,256 @@
+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]
+    ) -> Self {
+
+      let totalHeatingLoad = rooms.totalHeatingLoad
+      let totalCoolingLoad = rooms.totalCoolingLoad
+
+      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)
+        )
+      }
+
+      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
+    ) -> [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 = room.coolingTotal / 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/EffectiveLength.swift

@@ -61,6 +61,26 @@ extension EffectiveLength {
     }
   }
 
+  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
@@ -85,11 +105,81 @@ extension EffectiveLength {
       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 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
+        ),
+      ]
+    }
+
     public static let mocks: [Self] = [
       .init(
         id: UUID(0),

Sources/ManualDCore/EquipmentInfo.swift

@@ -50,10 +50,41 @@ extension EquipmentInfo {
       self.coolingCFM = coolingCFM
     }
   }
+
+  public struct Update: Codable, Equatable, Sendable {
+    public let staticPressure: Double?
+    public let heatingCFM: Int?
+    public let coolingCFM: Int?
+
+    public init(
+      staticPressure: Double? = nil,
+      heatingCFM: Int? = nil,
+      coolingCFM: Int? = nil
+    ) {
+      self.staticPressure = staticPressure
+      self.heatingCFM = heatingCFM
+      self.coolingCFM = coolingCFM
+    }
+  }
 }
 
 #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/FrictionRate.swift

@@ -0,0 +1,57 @@
+/// Holds onto values returned when calculating the design
+/// friction rate for a project.
+public struct FrictionRate: Codable, Equatable, Sendable {
+  public let availableStaticPressure: Double
+  public let value: Double
+  public var hasErrors: Bool { error != nil }
+
+  public init(
+    availableStaticPressure: Double,
+    value: Double
+  ) {
+    self.availableStaticPressure = availableStaticPressure
+    self.value = value
+  }
+
+  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
+  }
+}
+
+public struct FrictionRateError: Error, Equatable, Sendable {
+  public let reason: String
+  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/Numbers+string.swift

@@ -0,0 +1,24 @@
+import Foundation
+
+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/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/Project.swift

@@ -9,6 +9,7 @@ public struct Project: Codable, Equatable, Identifiable, Sendable {
   public let city: String
   public let state: String
   public let zipCode: String
+  public let sensibleHeatRatio: Double?
   public let createdAt: Date
   public let updatedAt: Date
 
@@ -19,6 +20,7 @@ public struct Project: Codable, Equatable, Identifiable, Sendable {
     city: String,
     state: String,
     zipCode: String,
+    sensibleHeatRatio: Double? = nil,
     createdAt: Date,
     updatedAt: Date
   ) {
@@ -28,6 +30,7 @@ public struct Project: Codable, Equatable, Identifiable, Sendable {
     self.city = city
     self.state = state
     self.zipCode = zipCode
+    self.sensibleHeatRatio = sensibleHeatRatio
     self.createdAt = createdAt
     self.updatedAt = updatedAt
   }
@@ -42,6 +45,7 @@ extension Project {
     public let city: String
     public let state: String
     public let zipCode: String
+    public let sensibleHeatRatio: Double?
 
     public init(
       name: String,
@@ -49,12 +53,86 @@ extension Project {
       city: String,
       state: String,
       zipCode: String,
+      sensibleHeatRatio: Double? = nil,
     ) {
       self.name = name
       self.streetAddress = streetAddress
       self.city = city
       self.state = state
       self.zipCode = zipCode
+      self.sensibleHeatRatio = sensibleHeatRatio
+    }
+  }
+
+  public struct CompletedSteps: Codable, Equatable, Sendable {
+
+    public let equipmentInfo: Bool
+    public let rooms: Bool
+    public let equivalentLength: Bool
+    public let frictionRate: Bool
+
+    public init(
+      equipmentInfo: Bool,
+      rooms: Bool,
+      equivalentLength: Bool,
+      frictionRate: Bool
+    ) {
+      self.equipmentInfo = equipmentInfo
+      self.rooms = rooms
+      self.equivalentLength = equivalentLength
+      self.frictionRate = frictionRate
+    }
+  }
+
+  public struct Detail: Codable, Equatable, Sendable {
+
+    public let project: Project
+    public let componentLosses: [ComponentPressureLoss]
+    public let equipmentInfo: EquipmentInfo
+    public let equivalentLengths: [EffectiveLength]
+    public let rooms: [Room]
+    public let trunks: [TrunkSize]
+
+    public init(
+      project: Project,
+      componentLosses: [ComponentPressureLoss],
+      equipmentInfo: EquipmentInfo,
+      equivalentLengths: [EffectiveLength],
+      rooms: [Room],
+      trunks: [TrunkSize]
+    ) {
+      self.project = project
+      self.componentLosses = componentLosses
+      self.equipmentInfo = equipmentInfo
+      self.equivalentLengths = equivalentLengths
+      self.rooms = rooms
+      self.trunks = trunks
+    }
+  }
+
+  public struct Update: Codable, Equatable, Sendable {
+
+    public let name: String?
+    public let streetAddress: String?
+    public let city: String?
+    public let state: String?
+    public let zipCode: String?
+    public let sensibleHeatRatio: Double?
+
+    public init(
+      name: String? = nil,
+      streetAddress: String? = nil,
+      city: String? = nil,
+      state: String? = nil,
+      zipCode: String? = nil,
+      sensibleHeatRatio: Double? = nil
+    ) {
+      self.name = name
+      self.streetAddress = streetAddress
+      self.city = city
+      self.state = state
+      self.zipCode = zipCode
+      self.sensibleHeatRatio = sensibleHeatRatio
     }
   }
 }
@@ -62,16 +140,22 @@ 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

@@ -6,8 +6,10 @@ public struct Room: Codable, Equatable, Identifiable, Sendable {
   public let projectID: Project.ID
   public let name: String
   public let heatingLoad: Double
-  public let coolingLoad: CoolingLoad
+  public let coolingTotal: Double
+  public let coolingSensible: Double?
   public let registerCount: Int
+  public let rectangularSizes: [RectangularSize]?
   public let createdAt: Date
   public let updatedAt: Date
 
@@ -16,8 +18,10 @@ public struct Room: Codable, Equatable, Identifiable, Sendable {
     projectID: Project.ID,
     name: String,
     heatingLoad: Double,
-    coolingLoad: CoolingLoad,
+    coolingTotal: Double,
+    coolingSensible: Double? = nil,
     registerCount: Int = 1,
+    rectangularSizes: [RectangularSize]? = nil,
     createdAt: Date,
     updatedAt: Date
   ) {
@@ -25,8 +29,10 @@ public struct Room: Codable, Equatable, Identifiable, Sendable {
     self.projectID = projectID
     self.name = name
     self.heatingLoad = heatingLoad
-    self.coolingLoad = coolingLoad
+    self.coolingTotal = coolingTotal
+    self.coolingSensible = coolingSensible
     self.registerCount = registerCount
+    self.rectangularSizes = rectangularSizes
     self.createdAt = createdAt
     self.updatedAt = updatedAt
   }
@@ -34,13 +40,12 @@ public struct Room: Codable, Equatable, Identifiable, Sendable {
 
 extension Room {
 
-  // TODO: Maybe remove project ID, and make dependencies that retrieves current project id??
   public struct Create: Codable, Equatable, Sendable {
     public let projectID: Project.ID
     public let name: String
     public let heatingLoad: Double
     public let coolingTotal: Double
-    public let coolingSensible: Double
+    public let coolingSensible: Double?
     public let registerCount: Int
 
     public init(
@@ -48,7 +53,7 @@ extension Room {
       name: String,
       heatingLoad: Double,
       coolingTotal: Double,
-      coolingSensible: Double,
+      coolingSensible: Double? = nil,
       registerCount: Int = 1
     ) {
       self.projectID = projectID
@@ -59,6 +64,76 @@ extension Room {
       self.registerCount = registerCount
     }
   }
+
+  public struct RectangularSize: 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 Update: Codable, Equatable, Sendable {
+    public let name: String?
+    public let heatingLoad: Double?
+    public let coolingTotal: Double?
+    public let coolingSensible: Double?
+    public let registerCount: Int?
+    public let rectangularSizes: [RectangularSize]?
+
+    public init(
+      name: String? = nil,
+      heatingLoad: Double? = nil,
+      coolingTotal: Double? = nil,
+      coolingSensible: Double? = nil,
+      registerCount: Int? = nil
+    ) {
+      self.name = name
+      self.heatingLoad = heatingLoad
+      self.coolingTotal = coolingTotal
+      self.coolingSensible = coolingSensible
+      self.registerCount = registerCount
+      self.rectangularSizes = nil
+    }
+
+    public init(
+      rectangularSizes: [RectangularSize]
+    ) {
+      self.name = nil
+      self.heatingLoad = nil
+      self.coolingTotal = nil
+      self.coolingSensible = nil
+      self.registerCount = nil
+      self.rectangularSizes = rectangularSizes
+    }
+  }
+}
+
+extension Array where Element == Room {
+
+  public var totalHeatingLoad: Double {
+    reduce(into: 0) { $0 += $1.heatingLoad }
+  }
+
+  public var totalCoolingLoad: Double {
+    reduce(into: 0) { $0 += $1.coolingTotal }
+  }
+
+  public func totalCoolingSensible(shr: Double) -> Double {
+    reduce(into: 0) {
+      let sensible = $1.coolingSensible ?? ($1.coolingTotal * shr)
+      $0 += sensible
+    }
+  }
 }
 
 #if DEBUG
@@ -70,7 +145,7 @@ extension Room {
         projectID: UUID(0),
         name: "Kitchen",
         heatingLoad: 12345,
-        coolingLoad: .init(total: 12345, sensible: 12345),
+        coolingTotal: 1234,
         registerCount: 2,
         createdAt: Date(),
         updatedAt: Date()
@@ -80,7 +155,7 @@ extension Room {
         projectID: UUID(1),
         name: "Bedroom - 1",
         heatingLoad: 12345,
-        coolingLoad: .init(total: 12345, sensible: 12345),
+        coolingTotal: 1456,
         registerCount: 1,
         createdAt: Date(),
         updatedAt: Date()
@@ -90,12 +165,92 @@ extension Room {
         projectID: UUID(2),
         name: "Family Room",
         heatingLoad: 12345,
-        coolingLoad: .init(total: 12345, sensible: 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,
+          coolingTotal: 2472,
+          coolingSensible: nil,
+          registerCount: 1,
+          rectangularSizes: nil,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Entry",
+          heatingLoad: 8284,
+          coolingTotal: 2916,
+          coolingSensible: nil,
+          registerCount: 2,
+          rectangularSizes: nil,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Family Room",
+          heatingLoad: 9785,
+          coolingTotal: 7446,
+          coolingSensible: nil,
+          registerCount: 3,
+          rectangularSizes: nil,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Kitchen",
+          heatingLoad: 4518,
+          coolingTotal: 5096,
+          coolingSensible: nil,
+          registerCount: 2,
+          rectangularSizes: nil,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Living Room",
+          heatingLoad: 7553,
+          coolingTotal: 6829,
+          coolingSensible: nil,
+          registerCount: 2,
+          rectangularSizes: nil,
+          createdAt: now,
+          updatedAt: now
+        ),
+        .init(
+          id: uuid(),
+          projectID: projectID,
+          name: "Master",
+          heatingLoad: 8202,
+          coolingTotal: 2076,
+          coolingSensible: nil,
+          registerCount: 2,
+          rectangularSizes: nil,
+          createdAt: now,
+          updatedAt: now
+        ),
+      ]
+    }
   }
 
 #endif

Sources/ManualDCore/Routes/ApiRoute.swift

@@ -45,6 +45,7 @@ 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
 
@@ -74,6 +75,36 @@ extension SiteRoute.Api {
         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 index
+    case completedSteps
+
+    static let rootPath = "details"
+
+    static let router = OneOf {
+      Route(.case(Self.index)) {
+        Path { rootPath }
+        Method.get
+      }
+      Route(.case(Self.completedSteps)) {
+        Path {
+          rootPath
+          "completed"
+        }
+        Method.get
+      }
     }
   }
 }

Sources/ManualDCore/Routes/SiteRoute.swift

@@ -1,4 +1,5 @@
 import CasePathsCore
+import FluentKit
 import Foundation
 @preconcurrency import URLRouting
 

Sources/ManualDCore/Theme.swift

@@ -0,0 +1,31 @@
+import Foundation
+
+public enum Theme: String, CaseIterable, Codable, Equatable, Sendable {
+  case aqua
+  case cupcake
+  case cyberpunk
+  case dark
+  case `default`
+  case dracula
+  case light
+  case night
+  case nord
+  case retro
+  case synthwave
+
+  public static let darkThemes = [
+    Self.aqua,
+    Self.cyberpunk,
+    Self.dark,
+    Self.dracula,
+    Self.night,
+    Self.synthwave,
+  ]
+
+  public static let lightThemes = [
+    Self.cupcake,
+    Self.light,
+    Self.nord,
+    Self.retro,
+  ]
+}

Sources/ManualDCore/TrunkSize.swift

@@ -0,0 +1,114 @@
+import Dependencies
+import Foundation
+
+// 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: 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 {
+  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: 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: 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
+    }
+  }
+
+  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]
+  }
+}
+
+#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

@@ -1,23 +1,21 @@
 import Dependencies
 import Foundation
 
+// FIX: Remove username.
 public struct User: Codable, Equatable, Identifiable, Sendable {
 
   public let id: UUID
   public let email: String
-  public let username: String
   public let createdAt: Date
   public let updatedAt: Date
 
   public init(
     id: UUID,
     email: String,
-    username: String,
     createdAt: Date,
     updatedAt: Date
   ) {
     self.id = id
-    self.username = username
     self.email = email
     self.createdAt = createdAt
     self.updatedAt = updatedAt
@@ -27,18 +25,15 @@ public struct User: Codable, Equatable, Identifiable, Sendable {
 extension User {
   public struct Create: Codable, Equatable, Sendable {
 
-    public let username: String
     public let email: String
     public let password: String
     public let confirmPassword: String
 
     public init(
-      username: String,
       email: String,
       password: String,
       confirmPassword: String
     ) {
-      self.username = username
       self.email = email
       self.password = password
       self.confirmPassword = confirmPassword
@@ -48,10 +43,12 @@ extension User {
   public struct Login: Codable, Equatable, Sendable {
     public let email: String
     public let password: String
+    public let next: String?
 
-    public init(email: String, password: String) {
+    public init(email: String, password: String, next: String? = nil) {
       self.email = email
       self.password = password
+      self.next = next
     }
   }
 
@@ -68,3 +65,15 @@ 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

@@ -0,0 +1,140 @@
+import Dependencies
+import Foundation
+
+extension User {
+  public struct Profile: Codable, Equatable, Identifiable, Sendable {
+
+    public let id: UUID
+    public let userID: User.ID
+    public let firstName: String
+    public let lastName: String
+    public let companyName: String
+    public let streetAddress: String
+    public let city: String
+    public let state: String
+    public let zipCode: String
+    public let theme: Theme?
+    public let createdAt: Date
+    public let updatedAt: Date
+
+    public init(
+      id: UUID,
+      userID: User.ID,
+      firstName: String,
+      lastName: String,
+      companyName: String,
+      streetAddress: String,
+      city: String,
+      state: String,
+      zipCode: String,
+      theme: Theme? = nil,
+      createdAt: Date,
+      updatedAt: Date
+    ) {
+      self.id = id
+      self.userID = userID
+      self.firstName = firstName
+      self.lastName = lastName
+      self.companyName = companyName
+      self.streetAddress = streetAddress
+      self.city = city
+      self.state = state
+      self.zipCode = zipCode
+      self.theme = theme
+      self.createdAt = createdAt
+      self.updatedAt = updatedAt
+    }
+  }
+}
+
+extension User.Profile {
+
+  public struct Create: Codable, Equatable, Sendable {
+    public let userID: User.ID
+    public let firstName: String
+    public let lastName: String
+    public let companyName: String
+    public let streetAddress: String
+    public let city: String
+    public let state: String
+    public let zipCode: String
+    public let theme: Theme?
+
+    public init(
+      userID: User.ID,
+      firstName: String,
+      lastName: String,
+      companyName: String,
+      streetAddress: String,
+      city: String,
+      state: String,
+      zipCode: String,
+      theme: Theme? = nil
+    ) {
+      self.userID = userID
+      self.firstName = firstName
+      self.lastName = lastName
+      self.companyName = companyName
+      self.streetAddress = streetAddress
+      self.city = city
+      self.state = state
+      self.zipCode = zipCode
+      self.theme = theme
+    }
+  }
+
+  public struct Update: Codable, Equatable, Sendable {
+    public let firstName: String?
+    public let lastName: String?
+    public let companyName: String?
+    public let streetAddress: String?
+    public let city: String?
+    public let state: String?
+    public let zipCode: String?
+    public let theme: Theme?
+
+    public init(
+      firstName: String? = nil,
+      lastName: String? = nil,
+      companyName: String? = nil,
+      streetAddress: String? = nil,
+      city: String? = nil,
+      state: String? = nil,
+      zipCode: String? = nil,
+      theme: Theme? = nil
+    ) {
+      self.firstName = firstName
+      self.lastName = lastName
+      self.companyName = companyName
+      self.streetAddress = streetAddress
+      self.city = city
+      self.state = state
+      self.zipCode = zipCode
+      self.theme = theme
+    }
+  }
+}
+
+#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 +1,153 @@
+import Dependencies
+import DependenciesMacros
+import Elementary
+import EnvClient
+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 {
+    let html = try await self.html(request)
+    return try await self.generatePdf(request.project.id, html)
+  }
+
+}
+
+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(\.env) var env
+
+      let envVars = try env()
+      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: envVars.pandocPath)
+      process.arguments = [
+        "\(baseUrl).html",
+        "--pdf-engine=\(envVars.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 {
+  /// Container for the data required to generate a pdf for a given project.
+  public struct Request: Codable, Equatable, Sendable {
+
+    public let project: Project
+    public let rooms: [Room]
+    public let componentLosses: [ComponentPressureLoss]
+    public let ductSizes: DuctSizes
+    public let equipmentInfo: EquipmentInfo
+    public let maxSupplyTEL: EffectiveLength
+    public let maxReturnTEL: EffectiveLength
+    public let frictionRate: FrictionRate
+    public let projectSHR: Double
+
+    var totalEquivalentLength: Double {
+      maxReturnTEL.totalEquivalentLength + maxSupplyTEL.totalEquivalentLength
+    }
+
+    public init(
+      project: Project,
+      rooms: [Room],
+      componentLosses: [ComponentPressureLoss],
+      ductSizes: DuctSizes,
+      equipmentInfo: EquipmentInfo,
+      maxSupplyTEL: EffectiveLength,
+      maxReturnTEL: EffectiveLength,
+      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
+    }
+  }
+
+  public struct Response: Equatable, Sendable {
+
+    public let htmlPath: String
+    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 = EffectiveLength.mock(projectID: project.id)
+
+      return .init(
+        project: project,
+        rooms: rooms,
+        componentLosses: ComponentPressureLoss.mock(projectID: project.id),
+        ductSizes: .mock(equipmentInfo: equipmentInfo, rooms: rooms, trunks: trunks),
+        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: [EffectiveLength]
+
+  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: [EffectiveLength.Group]
+
+  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 +1,50 @@
+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 { room.coolingTotal.string(digits: 0) }
+            td {
+              (room.coolingSensible
+                ?? (room.coolingTotal * projectSHR)).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")) {
+            rooms.totalCoolingLoad.string(digits: 0)
+          }
+          td(.class("coolingSensible label")) {
+            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/DuctCalcClientError.swift

@@ -0,0 +1,9 @@
+import Foundation
+
+public struct ProjectClientError: Error {
+  public let reason: String
+
+  public init(_ reason: String) {
+    self.reason = reason
+  }
+}

Sources/ProjectClient/Interface.swift

@@ -0,0 +1,76 @@
+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 client to render views.
+@DependencyClient
+public struct ProjectClient: Sendable {
+  public var calculateDuctSizes: @Sendable (Project.ID) async throws -> DuctSizes
+  public var calculateRoomDuctSizes:
+    @Sendable (Project.ID) async throws -> [DuctSizes.RoomContainer]
+  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
+}
+
+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: EffectiveLength.MaxContainer
+    public let frictionRate: FrictionRate?
+
+    public init(
+      componentLosses: [ComponentPressureLoss],
+      equivalentLengths: EffectiveLength.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.ComponentLoss {
+
+  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 +1,200 @@
+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)
+    let (trunks, _) = try await calculateTrunkDuctSizes(details: details)
+    return (.init(rooms: rooms, trunks: trunks), shared)
+  }
+
+  func calculateDuctSizes(
+    projectID: Project.ID
+  ) async throws -> (DuctSizes, DuctSizeSharedRequest, [Room]) {
+    @Dependency(\.manualD) var manualD
+
+    let shared = try await sharedDuctRequest(projectID)
+    let rooms = try await rooms.fetch(projectID)
+
+    return try await (
+      manualD.calculateDuctSizes(
+        rooms: rooms,
+        trunks: trunkSizes.fetch(projectID),
+        sharedRequest: shared
+      ),
+      shared,
+      rooms
+    )
+  }
+
+  func calculateRoomDuctSizes(
+    details: Project.Detail
+  ) async throws -> ([DuctSizes.RoomContainer], 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 calculateRoomDuctSizes(
+    projectID: Project.ID
+  ) async throws -> ([DuctSizes.RoomContainer], DuctSizeSharedRequest) {
+    @Dependency(\.manualD) var manualD
+
+    let shared = try await sharedDuctRequest(projectID)
+
+    return try await (
+      manualD.calculateRoomSizes(
+        rooms: rooms.fetch(projectID),
+        sharedRequest: shared
+      ),
+      shared
+    )
+  }
+
+  func calculateTrunkDuctSizes(
+    details: Project.Detail
+  ) async throws -> ([DuctSizes.TrunkContainer], DuctSizeSharedRequest) {
+    @Dependency(\.manualD) var manualD
+
+    let shared = try sharedDuctRequest(details: details)
+    let trunks = try await manualD.calculateTrunkSizes(
+      rooms: details.rooms,
+      trunks: details.trunks,
+      sharedRequest: shared
+    )
+    return (trunks, shared)
+  }
+
+  func calculateTrunkDuctSizes(
+    projectID: Project.ID
+  ) async throws -> ([DuctSizes.TrunkContainer], DuctSizeSharedRequest) {
+    @Dependency(\.manualD) var manualD
+
+    let shared = try await sharedDuctRequest(projectID)
+
+    return try await (
+      manualD.calculateTrunkSizes(
+        rooms: rooms.fetch(projectID),
+        trunks: trunkSizes.fetch(projectID),
+        sharedRequest: shared
+      ),
+      shared
+    )
+  }
+
+  func sharedDuctRequest(details: Project.Detail) throws -> DuctSizeSharedRequest {
+    guard
+      let dfrResponse = designFrictionRate(
+        componentLosses: details.componentLosses,
+        equipmentInfo: details.equipmentInfo,
+        equivalentLengths: details.maxContainer
+      )
+    else {
+      throw ProjectClientError("Project not complete.")
+    }
+
+    guard let projectSHR = details.project.sensibleHeatRatio else {
+      throw ProjectClientError("Project sensible heat ratio not set.")
+    }
+
+    let ensuredTEL = try dfrResponse.ensureMaxContainer()
+
+    return .init(
+      equipmentInfo: dfrResponse.equipmentInfo,
+      maxSupplyLength: ensuredTEL.supply,
+      maxReturnLenght: ensuredTEL.return,
+      designFrictionRate: dfrResponse.designFrictionRate,
+      projectSHR: projectSHR
+    )
+  }
+
+  func sharedDuctRequest(_ projectID: Project.ID) async throws -> DuctSizeSharedRequest {
+
+    guard let dfrResponse = try await designFrictionRate(projectID: projectID) else {
+      throw ProjectClientError("Project not complete.")
+    }
+
+    let ensuredTEL = try dfrResponse.ensureMaxContainer()
+
+    return try await .init(
+      equipmentInfo: dfrResponse.equipmentInfo,
+      maxSupplyLength: ensuredTEL.supply,
+      maxReturnLenght: ensuredTEL.return,
+      designFrictionRate: dfrResponse.designFrictionRate,
+      projectSHR: ensuredSHR(projectID)
+    )
+
+  }
+
+  // Fetches the project sensible heat ratio or throws an error if it's nil.
+  func ensuredSHR(_ projectID: Project.ID) async throws -> Double {
+    guard let projectSHR = try await projects.getSensibleHeatRatio(projectID) else {
+      throw ProjectClientError("Project sensible heat ratio not set.")
+    }
+    return projectSHR
+  }
+
+  // Internal container.
+  struct DesignFrictionRateResponse: Equatable, Sendable {
+
+    typealias EnsuredTEL = (supply: EffectiveLength, return: EffectiveLength)
+
+    let designFrictionRate: Double
+    let equipmentInfo: EquipmentInfo
+    let telMaxContainer: EffectiveLength.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: EffectiveLength.MaxContainer
+  ) -> DesignFrictionRateResponse? {
+    guard let tel = equivalentLengths.total,
+      componentLosses.count > 0
+    else { return nil }
+
+    let availableStaticPressure = equipmentInfo.staticPressure - componentLosses.total
+
+    return .init(
+      designFrictionRate: (availableStaticPressure * 100) / tel,
+      equipmentInfo: equipmentInfo,
+      telMaxContainer: equivalentLengths
+    )
+
+  }
+
+  func designFrictionRate(
+    projectID: Project.ID
+  ) async throws -> DesignFrictionRateResponse? {
+
+    guard let equipmentInfo = try await equipment.fetch(projectID) else {
+      return nil
+    }
+
+    return try await designFrictionRate(
+      componentLosses: componentLoss.fetch(projectID),
+      equipmentInfo: equipmentInfo,
+      equivalentLengths: effectiveLength.fetchMax(projectID)
+    )
+  }
+}

Sources/ProjectClient/Internal/ManualDClient+calculateDuctSizes.swift

@@ -0,0 +1,223 @@
+import Logging
+import ManualDClient
+import ManualDCore
+
+struct DuctSizeSharedRequest {
+  let equipmentInfo: EquipmentInfo
+  let maxSupplyLength: EffectiveLength
+  let maxReturnLenght: EffectiveLength
+  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 = rooms.totalCoolingSensible(shr: sharedRequest.projectSHR)
+
+    for room in rooms {
+      let heatingLoad = room.heatingLoadPerRegister
+      let coolingLoad = 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(
+        .init(designCFM: Int(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(
+            .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,
+            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 = rooms.totalCoolingSensible(shr: sharedRequest.projectSHR)
+
+    for trunk in trunks {
+      let heatingLoad = trunk.totalHeatingLoad
+      let coolingLoad = 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(
+        .init(designCFM: Int(designCFM.value), frictionRate: sharedRequest.designFrictionRate)
+      )
+      var width: Int? = nil
+      if let height = trunk.height {
+        let rectangularSize = try await self.rectangularSize(
+          .init(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.DuctSizeResponse,
+    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.DuctSizeResponse,
+    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) -> Double {
+    room.coolingSensiblePerRegister(projectSHR: projectSHR) * Double(actualRegisterCount)
+  }
+}
+
+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) }
+  }
+}

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.total 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,
+          totalEffectiveLength: Int(totalEquivalentLength)
+        )
+      )
+    )
+  }
+
+  func frictionRate(projectID: Project.ID) async throws -> ProjectClient.FrictionRateResponse {
+    @Dependency(\.database) var database
+
+    let componentLosses = try await database.componentLoss.fetch(projectID)
+    let lengths = try await database.effectiveLength.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.total else {
+      return .init(componentLosses: componentLosses, equivalentLengths: lengths)
+    }
+
+    return try await .init(
+      componentLosses: componentLosses,
+      equivalentLengths: lengths,
+      frictionRate: frictionRate(
+        .init(
+          externalStaticPressure: staticPressure,
+          componentPressureLosses: database.componentLoss.fetch(projectID),
+          totalEffectiveLength: Int(totalEquivalentLength)
+        )
+      )
+    )
+  }
+}

Sources/ProjectClient/Internal/ProjectDetail+maxContainer.swift

@@ -0,0 +1,14 @@
+import ManualDCore
+
+extension Project.Detail {
+  var maxContainer: EffectiveLength.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 +1,110 @@
+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(
+      calculateDuctSizes: { projectID in
+        try await database.calculateDuctSizes(projectID: projectID).0
+      },
+      calculateRoomDuctSizes: { projectID in
+        try await database.calculateRoomDuctSizes(projectID: projectID).0
+      },
+      calculateTrunkDuctSizes: { projectID in
+        try await database.calculateTrunkDuctSizes(projectID: projectID).0
+      },
+      createProject: { userID, request in
+        let project = try await database.projects.create(userID, request)
+        try await database.componentLoss.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(
+          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
+      }
+    )
+  }
+
+}
+
+extension DatabaseClient {
+
+  fileprivate func makePdfRequest(_ projectID: Project.ID) async throws -> PdfClient.Request {
+    @Dependency(\.manualD) var manualD
+
+    guard let projectDetails = try await projects.detail(projectID) else {
+      throw ProjectClientError("Project not found. id: \(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("Friction rate not found. id: \(projectID)")
+    }
+
+    return .init(
+      details: projectDetails,
+      ductSizes: ductSizes,
+      shared: shared,
+      frictionRate: frictionRate
+    )
+  }
+
+}
+
+extension PdfClient.Request {
+  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/Styleguide/Alert.swift

@@ -0,0 +1,28 @@
+import Elementary
+
+public struct Alert<Content: HTML>: HTML {
+
+  let inner: Content
+
+  public init(@HTMLBuilder content: () -> Content) {
+    self.inner = content()
+  }
+
+  public var body: some HTML<HTMLTag.div> {
+    div(.class("flex space-x-2")) {
+      SVG(.triangleAlert)
+      inner
+    }
+  }
+}
+
+extension Alert: Sendable where Content: Sendable {}
+
+extension Alert where Content == p<HTMLText> {
+
+  public init(_ description: String) {
+    self.init {
+      p { description }
+    }
+  }
+}

Sources/Styleguide/Badge.swift

@@ -0,0 +1,28 @@
+import Elementary
+
+public struct Badge<Inner: HTML>: HTML, Sendable where Inner: Sendable {
+
+  let inner: Inner
+
+  public init(
+    @HTMLBuilder inner: () -> Inner
+  ) {
+    self.inner = inner()
+  }
+
+  public var body: some HTML<HTMLTag.div> {
+    div(.class("badge badge-lg badge-outline")) {
+      inner
+    }
+  }
+}
+
+extension Badge where Inner == Number {
+  public init(number: Int) {
+    self.inner = Number(number)
+  }
+
+  public init(number: Double, digits: Int = 2) {
+    self.inner = Number(number, digits: digits)
+  }
+}

Sources/Styleguide/Buttons.swift

@@ -16,7 +16,7 @@ public struct SubmitButton: HTML, Sendable {
     button(
       .class(
         """
-        text-white font-bold text-xl bg-blue-500 hover:bg-blue-600 px-4 py-2 rounded-lg shadow-lg
+        btn btn-secondary
         """
       ),
       .type(type)
@@ -53,11 +53,11 @@ public struct CancelButton: HTML, Sendable {
 }
 
 public struct EditButton: HTML, Sendable {
-  let title: String
+  let title: String?
   let type: HTMLAttribute<HTMLTag.button>.ButtonType
 
   public init(
-    title: String = "Edit",
+    title: String? = nil,
     type: HTMLAttribute<HTMLTag.button>.ButtonType = .button
   ) {
     self.title = title
@@ -65,16 +65,11 @@ public struct EditButton: HTML, Sendable {
   }
 
   public var body: some HTML<HTMLTag.button> {
-    button(
-      .class(
-        """
-        text-white font-bold text-xl bg-blue-500 hover:bg-blue-600 px-4 py-2 rounded-lg shadow-lg
-        """
-      ),
-      .type(type)
-    ) {
+    button(.class("btn"), .type(type)) {
       div(.class("flex")) {
-        span(.class("pe-2")) { title }
+        if let title {
+          span(.class("pe-2")) { title }
+        }
         SVG(.squarePen)
       }
     }
@@ -86,6 +81,22 @@ public struct PlusButton: HTML, Sendable {
   public init() {}
 
   public var body: some HTML<HTMLTag.button> {
-    button(.type(.button)) { SVG(.circlePlus) }
+    button(
+      .type(.button),
+      .class("btn")
+    ) { SVG(.circlePlus) }
+  }
+}
+
+public struct TrashButton: HTML, Sendable {
+  public init() {}
+
+  public var body: some HTML<HTMLTag.button> {
+    button(
+      .type(.button),
+      .class("btn btn-error")
+    ) {
+      SVG(.trash)
+    }
   }
 }

Sources/Styleguide/Date.swift

@@ -0,0 +1,20 @@
+import Elementary
+import Foundation
+
+public struct DateView: HTML, Sendable {
+  let date: Date
+
+  var formatter: DateFormatter {
+    let formatter = DateFormatter()
+    formatter.dateFormat = "MM/dd/yyyy"
+    return formatter
+  }
+
+  public init(_ date: Date) {
+    self.date = date
+  }
+
+  public var body: some HTML<HTMLTag.span> {
+    span { formatter.string(from: date) }
+  }
+}

Sources/Styleguide/ElementaryExtensions.swift

@@ -1,4 +1,5 @@
 import Elementary
+import Foundation
 import ManualDCore
 
 extension HTMLAttribute where Tag: HTMLTrait.Attributes.href {
@@ -7,3 +8,49 @@ extension HTMLAttribute where Tag: HTMLTrait.Attributes.href {
     href(SiteRoute.View.router.path(for: route))
   }
 }
+
+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 {
+    value(string ?? "")
+  }
+
+  public static func value(_ int: Int?) -> Self {
+    value(int == nil ? "" : "\(int!)")
+  }
+
+  public static func value(_ double: Double?) -> Self {
+    value(double == nil ? "" : "\(double!)")
+  }
+
+  public static func value(_ uuid: UUID?) -> Self {
+    value(uuid?.uuidString ?? "")
+  }
+}
+
+extension HTMLAttribute where Tag == HTMLTag.button {
+  public static func showModal(id: String) -> Self {
+    .on(.click, "\(id).showModal()")
+  }
+}
+
+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)
+  }
+
+  public func bold(when shouldBeBold: Bool = true) -> _AttributedElement<Self> {
+    attributes(.class("font-bold"), when: shouldBeBold)
+  }
+}

Sources/Styleguide/HTMXExtensions.swift

@@ -23,8 +23,15 @@ extension HTMLAttribute.hx {
     put(SiteRoute.View.router.path(for: route))
   }
 
-  // @Sendable
-  // static func delete(route: SiteRoute.Api) -> HTMLAttribute {
-  //   delete(SiteRoute.Api.router.path(for: route))
-  // }
+  @Sendable
+  public static func delete(route: SiteRoute.View) -> HTMLAttribute {
+    delete(SiteRoute.View.router.path(for: route))
+  }
+}
+
+extension HTMLAttribute.hx {
+  @Sendable
+  public static func indicator() -> HTMLAttribute {
+    indicator(".htmx-indicator")
+  }
 }

Sources/Styleguide/Icon.swift

@@ -1,5 +1,6 @@
 import Elementary
 
+// TODO: Remove, using svg's.
 public struct Icon: HTML, Sendable {
 
   let icon: String

Sources/Styleguide/Input.swift

@@ -1,5 +1,26 @@
 import Elementary
 
+public struct LabeledInput: HTML, Sendable {
+
+  let labelText: String
+  let inputAttributes: [HTMLAttribute<HTMLTag.input>]
+
+  public init(
+    _ label: String,
+    _ attributes: HTMLAttribute<HTMLTag.input>...
+  ) {
+    self.labelText = label
+    self.inputAttributes = attributes
+  }
+
+  public var body: some HTML<HTMLTag.label> {
+    label(.class("input w-full")) {
+      span(.class("label")) { labelText }
+      input(attributes: inputAttributes)
+    }
+  }
+}
+
 public struct Input: HTML, Sendable {
 
   let id: String?

Sources/Styleguide/Label.swift

@@ -13,7 +13,7 @@ public struct Label: HTML, Sendable {
   }
 
   public var body: some HTML<HTMLTag.span> {
-    span(.class("text-xl text-gray-400 font-bold")) {
+    span(.class("text-lg label font-bold")) {
       title
     }
   }

Sources/Styleguide/LabeledContent.swift

@@ -0,0 +1,72 @@
+import Elementary
+
+public struct LabeledContent<Label: HTML, Content: HTML>: HTML {
+  let label: @Sendable () -> Label
+  let content: @Sendable () -> Content
+  let position: LabelPosition
+
+  public init(
+    position: LabelPosition = .default,
+    @HTMLBuilder label: @escaping @Sendable () -> Label,
+    @HTMLBuilder content: @escaping @Sendable () -> Content
+  ) {
+    self.position = position
+    self.label = label
+    self.content = content
+  }
+
+  public var body: some HTML<HTMLTag.div> {
+    div {
+      switch position {
+      case .leading:
+        label()
+        content()
+      case .trailing:
+        content()
+        label()
+      case .top:
+        label()
+        content()
+      case .bottom:
+        content()
+        label()
+      }
+    }
+    .attributes(.class("flex space-x-4"), when: position.isHorizontal)
+    .attributes(.class("space-y-4"), when: position.isVertical)
+  }
+}
+
+// TODO: Merge / use TooltipPosition
+public enum LabelPosition: String, CaseIterable, Equatable, Sendable {
+  case leading
+  case trailing
+  case top
+  case bottom
+
+  var isHorizontal: Bool {
+    self == .leading || self == .trailing
+  }
+
+  var isVertical: Bool {
+    self == .top || self == .bottom
+  }
+
+  public static let `default` = Self.leading
+}
+
+extension LabeledContent: Sendable where Label: Sendable, Content: Sendable {}
+
+extension LabeledContent where Label == Styleguide.Label {
+
+  public init(
+    _ label: String, position: LabelPosition = .default,
+    @HTMLBuilder content: @escaping @Sendable () -> Content
+  ) {
+    self.init(
+      position: position,
+      label: { Label(label) },
+      content: content
+    )
+  }
+}

Sources/Styleguide/ModalForm.swift

@@ -2,36 +2,37 @@ import Elementary
 
 public struct ModalForm<T: HTML>: HTML, Sendable where T: Sendable {
 
+  let closeButton: Bool
   let dismiss: Bool
   let id: String
   let inner: T
 
   public init(
     id: String,
+    closeButton: Bool = true,
     dismiss: Bool,
     @HTMLBuilder inner: () -> T
   ) {
+    self.closeButton = closeButton
     self.dismiss = dismiss
     self.id = id
     self.inner = inner()
   }
 
-  public var body: some HTML {
-    if dismiss {
-      div(.id(id)) {}
-    } else {
-      div(
-        .id(id),
-        .class(
-          """
-          fixed top-40 left-[25vw] w-1/2 z-50 text-gray-800
-          bg-gray-200 border border-gray-400 
-          rounded-lg shadow-lg mx-10
-          """
-        )
-      ) {
+  public var body: some HTML<HTMLTag.dialog> {
+    dialog(.id(id), .class("modal")) {
+      div(.class("modal-box")) {
+        if closeButton {
+          button(
+            .class("btn btn-sm btn-circle btn-ghost absolute right-2 top-2"),
+            .on(.click, "\(id).close()")
+          ) {
+            SVG(.close)
+          }
+        }
         inner
       }
     }
+    .attributes(.class("modal-open"), when: dismiss == false)
   }
 }

Sources/Styleguide/Number.swift

@@ -1,16 +1,19 @@
 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
-  }
+  // private var formatter: NumberFormatter {
+  //   let formatter = NumberFormatter()
+  //   formatter.maximumFractionDigits = fractionDigits
+  //   formatter.numberStyle = .decimal
+  //   formatter.groupingSize = 3
+  //   formatter.groupingSeparator = ","
+  //   return formatter
+  // }
 
   public init(
     _ value: Double,
@@ -27,6 +30,6 @@ 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/PageTitle.swift

@@ -0,0 +1,40 @@
+import Elementary
+
+public struct PageTitleRow<Content: HTML>: HTML, Sendable where Content: Sendable {
+
+  let inner: Content
+
+  public init(@HTMLBuilder content: () -> Content) {
+    self.inner = content()
+  }
+
+  public var body: some HTML<HTMLTag.div> {
+    div(
+      .class(
+        """
+        flex justify-between bg-secondary border-2 border-primary rounded-sm shadow-sm 
+        p-6 w-full
+        """
+      )
+    ) {
+      inner
+    }
+  }
+}
+
+public struct PageTitle: HTML, Sendable {
+
+  let title: String
+
+  public init(_ title: String) {
+    self.title = title
+  }
+
+  public init(_ title: () -> String) {
+    self.title = title()
+  }
+
+  public var body: some HTML<HTMLTag.h1> {
+    h1(.class("text-3xl font-bold")) { title }
+  }
+}

Sources/Styleguide/ResultView.swift

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

Sources/Styleguide/SVG.swift

@@ -15,23 +15,66 @@ public struct SVG: HTML, Sendable {
 
 extension SVG {
   public enum Key: Sendable {
+    case badgeCheck
+    case ban
+    case chevronDown
+    case chevronRight
+    case chevronsLeft
     case circlePlus
+    case circleUser
     case close
+    case doorClosed
     case email
+    case fan
     case key
+    case mapPin
+    case rulerDimensionLine
+    case sidebarToggle
+    case squareFunction
     case squarePen
+    case trash
+    case triangleAlert
     case user
+    case wind
 
     var svg: String {
       switch self {
+      case .badgeCheck:
+        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-badge-check-icon lucide-badge-check"><path d="M3.85 8.62a4 4 0 0 1 4.78-4.77 4 4 0 0 1 6.74 0 4 4 0 0 1 4.78 4.78 4 4 0 0 1 0 6.74 4 4 0 0 1-4.77 4.78 4 4 0 0 1-6.75 0 4 4 0 0 1-4.78-4.77 4 4 0 0 1 0-6.76Z"/><path d="m9 12 2 2 4-4"/></svg>
+          """
+      case .ban:
+        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-ban-icon lucide-ban"><path d="M4.929 4.929 19.07 19.071"/><circle cx="12" cy="12" r="10"/></svg>
+          """
+      case .chevronDown:
+        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-chevron-down-icon lucide-chevron-down"><path d="m6 9 6 6 6-6"/></svg>
+          """
+      case .chevronRight:
+        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-chevron-right-icon lucide-chevron-right"><path d="m9 18 6-6-6-6"/></svg>
+          """
+      case .chevronsLeft:
+        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-chevrons-left-icon lucide-chevrons-left"><path d="m11 17-5-5 5-5"/><path d="m18 17-5-5 5-5"/></svg>
+          """
       case .circlePlus:
         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-circle-plus-icon lucide-circle-plus"><circle cx="12" cy="12" r="10"/><path d="M8 12h8"/><path d="M12 8v8"/></svg>
           """
+      case .circleUser:
+        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-circle-user-icon lucide-circle-user"><circle cx="12" cy="12" r="10"/><circle cx="12" cy="10" r="3"/><path d="M7 20.662V19a2 2 0 0 1 2-2h6a2 2 0 0 1 2 2v1.662"/></svg>
+          """
       case .close:
         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-x-icon lucide-x"><path d="M18 6 6 18"/><path d="m6 6 12 12"/></svg>
           """
+      case .doorClosed:
+        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-door-closed-icon lucide-door-closed"><path d="M10 12h.01"/><path d="M18 20V6a2 2 0 0 0-2-2H8a2 2 0 0 0-2 2v14"/><path d="M2 20h20"/></svg>
+          """
       case .email:
         return """
             <svg class="h-[1em] opacity-50" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
@@ -47,6 +90,10 @@ extension SVG {
             </g>
           </svg>
           """
+      case .fan:
+        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 .key:
         return """
             <svg class="h-[1em] opacity-50" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
@@ -64,9 +111,34 @@ extension SVG {
               </g>
             </svg>
           """
+      case .mapPin:
+        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-map-pin-icon lucide-map-pin"><path d="M20 10c0 4.993-5.539 10.193-7.399 11.799a1 1 0 0 1-1.202 0C9.539 20.193 4 14.993 4 10a8 8 0 0 1 16 0"/><circle cx="12" cy="10" r="3"/></svg>
+          """
+      case .rulerDimensionLine:
+        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-ruler-dimension-line-icon lucide-ruler-dimension-line"><path d="M10 15v-3"/><path d="M14 15v-3"/><path d="M18 15v-3"/><path d="M2 8V4"/><path d="M22 6H2"/><path d="M22 8V4"/><path d="M6 15v-3"/><rect x="2" y="12" width="20" height="8" rx="2"/></svg>
+          """
+      case .sidebarToggle:
+        return """
+          <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" stroke-linejoin="round" stroke-linecap="round" stroke-width="2" fill="none" stroke="currentColor" class="my-1.5 inline-block"><path d="M4 4m0 2a2 2 0 0 1 2 -2h12a2 2 0 0 1 2 2v12a2 2 0 0 1 -2 2h-12a2 2 0 0 1 -2 -2z"></path><path d="M9 4v16"></path><path d="M14 10l2 2l-2 2"></path></svg>
+          """
+      case .squareFunction:
+        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-square-function-icon lucide-square-function"><rect width="18" height="18" x="3" y="3" rx="2" ry="2"/><path d="M9 17c2 0 2.8-1 2.8-2.8V10c0-2 1-3.3 3.2-3"/><path d="M9 11.2h5.7"/></svg>
+          """
       case .squarePen:
         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-square-pen-icon lucide-square-pen"><path d="M12 3H5a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7"/><path d="M18.375 2.625a1 1 0 0 1 3 3l-9.013 9.014a2 2 0 0 1-.853.505l-2.873.84a.5.5 0 0 1-.62-.62l.84-2.873a2 2 0 0 1 .506-.852z"/></svg>
+
+          """
+      case .trash:
+        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-trash2-icon lucide-trash-2"><path d="M10 11v6"/><path d="M14 11v6"/><path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6"/><path d="M3 6h18"/><path d="M8 6V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/></svg>
+          """
+      case .triangleAlert:
+        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-triangle-alert-icon lucide-triangle-alert"><path d="m21.73 18-8-14a2 2 0 0 0-3.48 0l-8 14A2 2 0 0 0 4 21h16a2 2 0 0 0 1.73-3"/><path d="M12 9v4"/><path d="M12 17h.01"/></svg>
           """
       case .user:
         return """
@@ -83,6 +155,10 @@ extension SVG {
             </g>
           </svg>
           """
+      case .wind:
+        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-wind-icon lucide-wind"><path d="M12.8 19.6A2 2 0 1 0 14 16H2"/><path d="M17.5 8a2.5 2.5 0 1 1 2 4H2"/><path d="M9.8 4.4A2 2 0 1 1 11 8H2"/></svg>
+          """
       }
     }
   }

Sources/Styleguide/Tooltip.swift

@@ -0,0 +1,51 @@
+import Elementary
+
+extension HTML {
+
+  public func tooltip(
+    _ tip: String,
+    position: TooltipPosition = .default
+  ) -> Tooltip<Self> {
+    Tooltip(tip, position: position) {
+      self
+    }
+  }
+}
+
+public struct Tooltip<Inner: HTML>: HTML {
+
+  let tooltip: String
+  let position: TooltipPosition
+  let inner: Inner
+
+  public init(
+    _ tooltip: String,
+    position: TooltipPosition = .default,
+    @HTMLBuilder inner: () -> Inner
+  ) {
+    self.tooltip = tooltip
+    self.position = position
+    self.inner = inner()
+  }
+
+  public var body: some HTML<HTMLTag.div> {
+    div(
+      .class("tooltip tooltip-\(position.rawValue)"),
+      .data("tip", value: tooltip)
+    ) {
+      inner
+    }
+  }
+}
+
+extension Tooltip: Sendable where Inner: Sendable {}
+
+public enum TooltipPosition: String, CaseIterable, Sendable {
+
+  public static let `default` = Self.left
+
+  case bottom
+  case left
+  case right
+  case top
+}

Sources/ViewController/Extensions/EquivalentLengthForm+extensions.swift

@@ -0,0 +1,60 @@
+import DatabaseClient
+import ManualDCore
+
+extension SiteRoute.View.ProjectRoute.EquivalentLengthRoute.StepThree {
+
+  func validate() throws(ValidationError) {
+    guard groupGroups.count == groupLengths.count,
+      groupGroups.count == groupLetters.count,
+      groupGroups.count == groupQuantities.count
+    else {
+      throw ValidationError("Equivalent length form group counts are not equal.")
+    }
+  }
+
+  var groups: [EffectiveLength.Group] {
+    var groups = [EffectiveLength.Group]()
+    for (n, group) in groupGroups.enumerated() {
+      groups.append(
+        .init(
+          group: group,
+          letter: groupLetters[n],
+          value: Double(groupLengths[n]),
+          quantity: groupQuantities[n]
+        )
+      )
+    }
+    return groups
+
+  }
+}
+
+extension EffectiveLength.Create {
+
+  init(
+    form: SiteRoute.View.ProjectRoute.EquivalentLengthRoute.StepThree,
+    projectID: Project.ID
+  ) {
+    self.init(
+      projectID: projectID,
+      name: form.name,
+      type: form.type,
+      straightLengths: form.straightLengths,
+      groups: form.groups
+    )
+  }
+}
+
+extension EffectiveLength.Update {
+  init(
+    form: SiteRoute.View.ProjectRoute.EquivalentLengthRoute.StepThree,
+    projectID: Project.ID
+  ) throws {
+    self.init(
+      name: form.name,
+      type: form.type,
+      straightLengths: form.straightLengths,
+      groups: form.groups
+    )
+  }
+}

Sources/ViewController/Extensions/String+extensions.swift

@@ -0,0 +1,25 @@
+import Foundation
+
+extension String {
+
+  func appendingPath(_ string: String) -> Self {
+    guard string.starts(with: "/") else {
+      return self.appending("/\(string)")
+    }
+    return self.appending(string)
+  }
+
+  func appendingPath(_ id: UUID?) -> Self {
+    guard let id else { return self }
+    return appendingPath(id.uuidString)
+  }
+
+  func appendingPath(_ id: UUID) -> Self {
+    return appendingPath(id.uuidString)
+  }
+
+  var idString: Self {
+    replacing("-", with: "")
+      .replacing(" ", with: "")
+  }
+}

Sources/ViewController/Extensions/TrunkSizeForm+extensions.swift

@@ -0,0 +1,54 @@
+import Foundation
+import Logging
+import ManualDCore
+
+extension SiteRoute.View.ProjectRoute.DuctSizingRoute.TrunkSizeForm {
+
+  func toCreate(logger: Logger? = nil) throws -> TrunkSize.Create {
+    try .init(
+      projectID: projectID,
+      type: type,
+      rooms: makeRooms(logger: logger),
+      height: height,
+      name: name
+    )
+  }
+
+  func toUpdate(logger: Logger? = nil) throws -> TrunkSize.Update {
+    try .init(
+      type: type,
+      rooms: makeRooms(logger: logger),
+      height: height,
+      name: name
+    )
+  }
+
+  func makeRooms(logger: Logger?) throws -> [Room.ID: [Int]] {
+    var retval = [Room.ID: [Int]]()
+    for room in rooms {
+      let split = room.split(separator: "_")
+      guard let idString = split.first,
+        let id = UUID(uuidString: String(idString))
+      else {
+        logger?.error("Could not parse id from: \(room)")
+        throw RoomError()
+      }
+      guard let registerString = split.last,
+        let register = Int(registerString)
+      else {
+        logger?.error("Could not register number from: \(room)")
+        throw RoomError()
+      }
+      if var currRegisters = retval[id] {
+        currRegisters.append(register)
+        retval[id] = currRegisters
+      } else {
+        retval[id] = [register]
+      }
+
+    }
+    return retval
+  }
+}
+
+struct RoomError: Error {}

Sources/ViewController/Extensions/UUID+idString.swift

@@ -0,0 +1,7 @@
+import Foundation
+
+extension UUID {
+  var idString: String {
+    uuidString.idString
+  }
+}

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
 }
 
@@ -29,26 +26,17 @@ 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
     }
 
-    func authenticate(_ user: User) {
-      self.authenticateUser(user)
-    }
   }
 }
 
@@ -58,7 +46,30 @@ extension ViewController: DependencyKey {
   // FIX: Fix.
   public static let liveValue = Self(
     view: { request in
-      try await request.render()
+      await request.render()
     }
   )
 }
+
+extension ViewController.Request {
+
+  func currentUser() throws -> User {
+    @Dependency(\.authClient.currentUser) var currentUser
+    return try currentUser()
+  }
+
+  func authenticate(
+    _ login: User.Login
+  ) async throws -> User {
+    @Dependency(\.authClient) var auth
+    return try await auth.login(login)
+  }
+
+  @discardableResult
+  func createAndAuthenticate(
+    _ signup: User.Create
+  ) async throws -> User {
+    @Dependency(\.authClient) var auth
+    return try await auth.createAndLogin(signup)
+  }
+}