feat: Begins vapor application, begins view controller.

Sources/App/Extensions/Request+extensions.swift

@@ -0,0 +1,7 @@
+import Vapor
+
+extension Request {
+  var isHtmxRequest: Bool {
+    headers.contains(name: "hx-request")
+  }
+}

Sources/App/Extensions/ViewController+respond.swift

@@ -0,0 +1,60 @@
+import Elementary
+import ManualDCore
+import Vapor
+import VaporElementary
+import ViewController
+
+extension ViewController {
+  func respond(route: SiteRoute.View, request: Vapor.Request) async throws
+    -> any AsyncResponseEncodable
+  {
+    let html = try await view(
+      .init(
+        route: route,
+        isHtmxRequest: request.isHtmxRequest,
+        logger: request.logger,
+        // authenticate: { request.session.authenticate($0) },
+        // currentUser: {
+        //   try request.auth.require(User.self)
+        // }
+      )
+    )
+    return AnyHTMLResponse(value: html)
+  }
+}
+
+// Re-adapted from `HTMLResponse` in the VaporElementary package to work with any html types
+// returned from the view controller.
+struct AnyHTMLResponse: AsyncResponseEncodable {
+
+  public var chunkSize: Int
+  public var headers: HTTPHeaders = ["Content-Type": "text/html; charset=utf-8"]
+  var value: _SendableAnyHTMLBox
+
+  init(chunkSize: Int = 1024, additionalHeaders: HTTPHeaders = [:], value: AnySendableHTML) {
+    self.chunkSize = chunkSize
+    if additionalHeaders.contains(name: .contentType) {
+      self.headers = additionalHeaders
+    } else {
+      headers.add(contentsOf: additionalHeaders)
+    }
+    self.value = .init(value)
+  }
+
+  func encodeResponse(for request: Request) async throws -> Response {
+    Response(
+      status: .ok,
+      headers: headers,
+      body: .init(asyncStream: { [value, chunkSize] writer in
+        guard let html = value.tryTake() else {
+          assertionFailure("Non-sendable HTML value consumed more than once")
+          request.logger.error("Non-sendable HTML value consumed more than once")
+          throw Abort(.internalServerError)
+        }
+        try await writer.writeHTML(html, chunkSize: chunkSize)
+        try await writer.write(.end)
+
+      })
+    )
+  }
+}