MQTTMessage.swift

//
//  MQTTMessage.swift
//  MQTT
//
// Original source created by Feng Lee<feng@eqmtt.io> on 14/8/3.
// Copyright (c) 2015 emqtt.io MIT License
//
// Copyright (c) 2016 iAchieved.it LLC
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//

//

import Foundation

/**
 * MQTT Message
 */
public class MQTTMessage: NSObject {

    public var topic: String

    public var payload: [UInt8]

    //utf8 bytes array to string
    public var string: String? {
      get {
        if let nsString = NSString(bytes: payload, length: payload.count, encoding: String.Encoding.utf8.rawValue) {
          return String(nsString)
        } else {
          return nil
        }
      }
    }

    var qos: MQTTQOS = .QOS1

    var retained: Bool = false

    var dup: Bool = false

    public init(topic: String, string: String, qos: MQTTQOS = .QOS1, retained: Bool = false, dup: Bool = false) {
        self.topic = topic
        self.payload = [UInt8](string.utf8)
        self.qos = qos
        self.retained = retained
        self.dup = dup
    }

    public init(topic: String, payload: [UInt8], qos: MQTTQOS = .QOS1, retained: Bool = false, dup: Bool = false) {
        self.topic = topic
        self.payload = payload
        self.qos = qos
        self.retained = retained
        self.dup = dup
    }

}

/**
 * MQTT Will Message
 */
public class MQTTWill: MQTTMessage {

    public init(topic: String, message: String) {
        super.init(topic: topic, payload: message.bytesWithLength)
    }

}