gistfile1.txt

import HTTPServer
import Router
import JSON

import JSONMediaType
import MediaType
import ContentNegotiationMiddleware
import Mapper

import StructuredData
import Log
import LogMiddleware

class LogAppender : Appender {
    var name: String = "asdf"
    var closed: Bool = false
    var level: Log.Level = .all
    
    func append (event: LoggingEvent) {
        debugPrint(event.message as? String)
    }
}

struct Todo: Mappable, StructuredDataRepresentable {
    var id: Int?
    var title: String?
    var url: String?
    var completed: Bool?
    var order: Int?

    init(map: Mapper) throws {
        self.id = map.optionalFrom("id")
        self.title = map.optionalFrom("title")
        self.url = map.optionalFrom("url")
        self.completed = map.optionalFrom("completed")
        self.order = map.optionalFrom("order")
    }
    
    var structuredData: StructuredData {
        get {
            return [
               "id": StructuredData.from(id ?? 0),
               "title": StructuredData.from(title ?? ""),
               "url": StructuredData.from(url ?? ""),
               "completed": StructuredData.from(completed ?? false),
               "order": StructuredData.from(order ?? 0)
            ]
        }
    }
}

func getIdParameter(from request: Request) -> Int {
    guard let idString = request.pathParameters["id"] else { return 0 }
    return Int(idString) ?? 0
}

let contentNegotiation = ContentNegotiationMiddleware(mediaTypes: [JSONMediaType()])
let logMiddleware = LogMiddleware(logger: Logger(name: "Todo", appender: LogAppender()))

let router = Router(middleware: logMiddleware, contentNegotiation) { route in

    var todos = [Todo?]()
    let corsHeader = Headers(["access-control-allow-origin" : Header("*")])
    
    route.get("/") { request in
        var structuredTodos = [StructuredData]()
        for _todo in todos where _todo != nil {
            if let todo = _todo {
                structuredTodos.append(todo.structuredData)
            }
        }
        return Response(status: .ok, headers: corsHeader, content: StructuredData.from(structuredTodos))
    }
    
    route.post("/") { request in
        guard let content = request.content else {
            return Response(headers: corsHeader)
        }
        guard var todo = Todo.makeWith(structuredData: content) else {
            return Response(headers: corsHeader)
        }
        todo.url = "http://localhost:34197/todo/\(todos.count)"
        todo.completed = false
        todo.id = todos.count
        todos.append(todo)
        return Response(status: .ok, headers: corsHeader, content: todo)
    }
    
    route.delete("/") { request in
        todos = [Todo?]()
        return Response(headers: corsHeader)
    }
    
    route.get("/todo/:id") { request in
        let index = getIdParameter(from:request)
        guard let todo: Todo = todos[index] else {
            return Response(headers: corsHeader)
        }
        return Response(status: .ok, headers: corsHeader, content: todo)
    }
    
    route.delete("/todo/:id") { request in
        let index = getIdParameter(from:request)
        todos[index] = nil
        return Response(headers: corsHeader)
    }

    route.patch("/todo/:id") { request in
        let index = getIdParameter(from:request)
        guard let content = request.content else {
            return Response(headers: corsHeader)
        }
        guard var todo = Todo.makeWith(structuredData: content) else {
            return Response(headers: corsHeader)
        }
        todo.url = "http://localhost:34197/todo/\(todos.count)"
        todos[index] = todo
        return Response(status: .ok, headers: corsHeader, content: todo)
    }
}

try Server(on: 34197, responder: router).start()