Everywhere: Implement HTMX todo page

Sources/App/Controllers/API/TodoAPIController.swift

@@ -0,0 +1,82 @@
+import Fluent
+import Vapor
+
+struct TodoAPIController: RouteCollection {
+    func boot(routes: RoutesBuilder) throws {
+        let todos = routes.grouped("todos")
+
+        todos.get(use: index)
+        todos.post(use: create)
+        todos.group(":id") { todo in
+            todo.get(use: show)
+            todo.put(use: update)
+            todo.delete(use: delete)
+        }
+        // todos.delete(":id", use: delete)
+    }
+
+    @Sendable
+    func index(req: Request) async throws -> [TodoDTO] {
+        try await Todo.query(on: req.db).all().map { $0.toDTO() }
+    }
+
+    @Sendable
+    func show(req: Request) async throws -> TodoDTO {
+        guard let uuid = hexToUUID(hex: req.parameters.get("id")!),
+              let todo = try await Todo.find(uuid, on: req.db) else {
+            throw Abort(.notFound)
+        }
+
+        return todo.toDTO()
+    }
+
+    @Sendable
+    func create(req: Request) async throws -> TodoDTO {
+        let todo = try req.content.decode(TodoDTO.self).toModel()
+
+        try await todo.save(on: req.db)
+
+        return todo.toDTO()
+    }
+
+    @Sendable
+    func update(req: Request) async throws -> TodoDTO {
+        guard let uuid = hexToUUID(hex: req.parameters.get("id")!),
+              let todo = try await Todo.find(uuid, on: req.db) else {
+            throw Abort(.notFound)
+        }
+
+        let updatedTodo = try req.content.decode(Todo.self)
+        todo.title = updatedTodo.title
+        try await todo.save(on: req.db)
+
+        return todo.toDTO()
+    }
+
+    @Sendable
+    func delete(req: Request) async throws -> HTTPStatus {
+        guard let uuid = hexToUUID(hex: req.parameters.get("id")!),
+              let todo = try await Todo.find(uuid, on: req.db) else {
+            throw Abort(.notFound)
+        }
+
+        try await todo.delete(on: req.db)
+
+        return .noContent
+    }
+
+    // -------------------------------------
+
+    private func hexToUUID(hex: String) -> UUID? {
+        var uuid: String = hex.replacingOccurrences(of: "-", with: "")
+
+        guard uuid.count == 32 else { return nil }
+
+        uuid.insert("-", at: uuid.index(uuid.startIndex, offsetBy: 8))
+        uuid.insert("-", at: uuid.index(uuid.startIndex, offsetBy: 12 + 1))
+        uuid.insert("-", at: uuid.index(uuid.startIndex, offsetBy: 16 + 2))
+        uuid.insert("-", at: uuid.index(uuid.startIndex, offsetBy: 20 + 3))
+
+        return UUID(uuidString: uuid)
+    }
+}