import UIKit
import Foundation
import Network

let host = "***.***.***.***"
let port = "****"

/* コネクション開始 */
let connection = connect(host: host, port: port)

class ViewController: UIViewController {
    @IBOutlet weak var status_label: UILabel!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }
}

func send(connection: NWConnection,message: String) {
    /* 送信データ生成 */
    let data = message.data(using: .utf8)!
    let semaphore = DispatchSemaphore(value: 0)

    /* データ送信 */
    connection.send(content: data, completion: .contentProcessed { error in
        if let error = error {
            NSLog("\(#function), \(error)")
        } else {
            semaphore.signal()
        }
    })
    /* 送信完了待ち */
    semaphore.wait()
}

func recv(connection: NWConnection){
    let semaphore = DispatchSemaphore(value: 0)
    var result : String?
    /* データ受信 */
    connection.receive(minimumIncompleteLength: 0,
                       maximumLength: 65535,
                       completion:{(data, context, flag, error) in
        if let error = error {
            NSLog("\(#function), \(error)")
        } else {
            if let data = data ,let message = String(data: data, encoding: .utf8){
                print(message)
                /* 受信データのデシリアライズ */
                semaphore.signal()
            }
            else {
                NSLog("receiveMessage data nil")
            }
        }
    })
    /* 受信完了待ち */
    semaphore.wait()
}

func disconnect(connection: NWConnection)
{
    /* コネクション切断 */
    connection.cancel()
}

func connect(host: String, port: String) -> NWConnection
{
    let t_host = NWEndpoint.Host(host)
    let t_port = NWEndpoint.Port(port)
    let connection : NWConnection
    let semaphore = DispatchSemaphore(value: 0)

    /* コネクションの初期化 */
    connection = NWConnection(host: t_host, port: t_port!, using: .udp)

    /* コネクションのStateハンドラ設定 */
    connection.stateUpdateHandler = { (newState) in
        switch newState {
            case .ready:
                NSLog("Ready to send")
                semaphore.signal()
            case .waiting(let error):
                NSLog("\(#function), \(error)")
            case .failed(let error):
                NSLog("\(#function), \(error)")
            case .setup: break
            case .cancelled: break
            case .preparing: break
            @unknown default:
                fatalError("Illegal state")
        }
    }
    
    /* コネクション開始 */
    let queue = DispatchQueue(label: "example")
    connection.start(queue:queue)

    /* コネクション完了待ち */
    semaphore.wait()
    return connection
}

import UIKit

class ModalViewController: UIViewController {
    @IBOutlet weak var label_temp: UILabel!
    @IBOutlet weak var label_level: UILabel!
    @IBOutlet weak var label_mode: UILabel!
    var mode = ""
    var temp = 0
    var level = 0
    
    override func viewDidLoad() {
        super.viewDidLoad()
        label_temp.text = ""
        label_level.text = ""
        label_mode.text = "OFF"

        // Do any additional setup after loading the view.
    }
    @IBAction func heat_button(_ sender: Any) {
        send(connection: connection, message: "heat")
        temp = 27
        level = 2
        label_temp.text = String(temp) + "℃"
        label_level.text = String(level)
        label_mode.text = "暖房"
    }
    
    @IBAction func cool_button(_ sender: Any) {
        send(connection: connection, message: "cool")
        temp = 27
        level = 2
        label_temp.text = String(temp) + "℃"
        label_level.text = String(level)
        label_mode.text = "冷房"
    }
    
    @IBAction func dehumi_button(_ sender: Any) {
        send(connection: connection, message: "dehumi")
        temp = 27
        level = 2
        label_temp.text = String(temp) + "℃"
        label_level.text = String(level)
        label_mode.text = "除湿"
    }
    
    @IBAction func tempup_button(_ sender: Any) {
        send(connection: connection, message: "tempup")
        temp = temp + 1
        label_temp.text = String(temp) + "℃"
    }
    
    @IBAction func tempdown_button(_ sender: Any) {
        send(connection: connection, message: "tempdown")
        temp = temp - 1
        label_temp.text = String(temp) + "℃"
    }
    
    @IBAction func levelup_button(_ sender: Any) {
        send(connection: connection, message: "levelup")
        level = level + 1
        label_level.text = String(level)
    }
    
    @IBAction func leveldown_button(_ sender: Any) {
        send(connection: connection, message: "leveldown")
        level = level - 1
        label_level.text = String(level)
    }
    
    @IBAction func off_button(_ sender: Any) {
        send(connection: connection, message: "off")
        label_temp.text = ""
        label_level.text = ""
        label_mode.text = "OFF"
    }
}