Vapor-style Route Controller

1import Vapor
2 
3struct User: Content {
4    var id: UUID?
5    var name: String
6    var email: String
7}
8 
9struct UserController: RouteCollection {
10    func boot(routes: RoutesBuilder) throws {
11        let users = routes.grouped("users")
12        users.get(use: index)
13        users.post(use: create)
14        users.group(":userID") { user in
15            user.get(use: show)
16            user.put(use: update)
17            user.delete(use: delete)
18        }
19    }
20    
21    func index(req: Request) async throws -> [User] {
22        return [User(id: UUID(), name: "Alice", email: "alice@example.com")]
23    }
24    
25    func show(req: Request) async throws -> User {
26        guard let userID = req.parameters.get("userID", as: UUID.self) else {
27            throw Abort(.badRequest)
28        }
29        return User(id: userID, name: "User", email: "user@example.com")
30    }
31    
32    func create(req: Request) async throws -> User {
33        let user = try req.content.decode(User.self)
34        return user
35    }
36    
37    func update(req: Request) async throws -> User {
38        let user = try req.content.decode(User.self)
39        return user
40    }
41    
42    func delete(req: Request) async throws -> HTTPStatus {
43        return .noContent
44    }
45}