WIP: Initial pdf generation and download, needs improvement and put somewhere different.

Public/css/output.css

@@ -8548,6 +8548,10 @@
   .italic {
     font-style: italic;
   }
+  .lining-nums {
+    --tw-numeric-figure: lining-nums;
+    font-variant-numeric: var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,);
+  }
   .tabular-nums {
     --tw-numeric-spacing: tabular-nums;
     font-variant-numeric: var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,);

Sources/App/Middleware/ViewRoute+middleware.swift

@@ -14,10 +14,11 @@ private let viewRouteMiddleware: [any Middleware] = [
 extension SiteRoute.View {
   var middleware: [any Middleware]? {
     switch self {
+    // TODO: Should pdf require authentication, just here now for testing.
+    case .project(.detail(_, .pdf)), .login, .signup, .test:
+      return nil
     case .project, .user:
       return viewRouteMiddleware
-    case .login, .signup, .test:
-      return nil
     }
   }
 }

Sources/App/configure.swift

@@ -114,6 +114,39 @@ extension SiteRoute {
 
 extension DuctSizes: Content {}
 
+// FIX: Move
+func handlePdf(_ projectID: Project.ID, on request: Request) async throws -> Response {
+  @Dependency(\.projectClient) var projectClient
+
+  let html = try await projectClient.toHTML(projectID)
+  let url = "/tmp/\(projectID)"
+  try await request.fileio.writeFile(.init(string: html.renderFormatted()), at: "\(url).html")
+
+  let process = Process()
+  let standardInput = Pipe()
+  let standardOutput = Pipe()
+  process.standardInput = standardInput
+  process.standardOutput = standardOutput
+  process.executableURL = URL(fileURLWithPath: "/bin/pandoc")
+  process.arguments = [
+    "\(url).html", "--pdf-engine=weasyprint", "-f", "html",
+    "--css=Public/css/pdf.css",
+    "-o", "\(url).pdf",
+  ]
+  try process.run()
+  process.waitUntilExit()
+
+  var headers = HTTPHeaders()
+  headers.add(name: .contentType, value: "application/octet-stream")
+  headers.add(name: .contentDisposition, value: "attachment")
+
+  let response = try await request.fileio.asyncStreamFile(at: "\(url).pdf", mediaType: .pdf)
+  response.headers.replaceOrAdd(name: .contentType, value: "application/octet-stream")
+  response.headers.replaceOrAdd(
+    name: .contentDisposition, value: "attachment; filename=Duct-Calc.pdf")
+  return response
+}
+
 @Sendable
 private func siteHandler(
   request: Request,
@@ -128,6 +161,9 @@ private func siteHandler(
     return try await apiController.respond(route, request: request)
   case .health:
     return HTTPStatus.ok
+  // FIX: Move
+  case .view(.project(.detail(let projectID, .pdf))):
+    return try await handlePdf(projectID, on: request)
   case .view(let route):
     return try await viewController.respond(route: route, request: request)
   }

Sources/PdfClient/Request+html.swift

@@ -20,7 +20,7 @@ struct PdfDocument: HTMLDocument {
 
   var body: some HTML {
     div {
-      h1(.class("headline")) { "Duct Calc" }
+      // h1(.class("headline")) { "Duct Calc" }
 
       h2 { "Project" }
 

Sources/Styleguide/ResultView.swift

@@ -69,7 +69,7 @@ public struct ErrorView: HTML, Sendable {
     div {
       h1(.class("text-xl font-bold text-error")) { "Oops: Error" }
       p {
-        "\(error)"
+        "\(error.localizedDescription)"
       }
     }
   }

Sources/ViewController/Live.swift

@@ -193,15 +193,9 @@ extension SiteRoute.View.ProjectRoute {
       case .frictionRate(let route):
         return await route.renderView(on: request, projectID: projectID)
       case .pdf:
-        // return await ResultView2 {
-        //   try await projectClient.toHTML(projectID)
-        // } onError: {
-        //   ErrorView2(error: $0)
-        // }
-        // return await ResultView {
+        // FIX: This should return a pdf to download or be wrapped in a
+        //      result view.
         return try! await projectClient.toHTML(projectID)
-      // }
-      // fatalError()
       case .rooms(let route):
         return await route.renderView(on: request, projectID: projectID)
       }