const app = getApp()
const mqtt = require("mqtt.js")
/**
 * 
 */
var mqttClient = function() {
  app.client = mqtt.connect('wxs://iotv2.ffcygl.com/mqtt', {
    // 心跳请求，单位s
    keepalive: 30,
    clientId: app.openId,
    protocolId: 'MQTT',
    protocolVersion: 4,
    username: 'admin',
    password: 'admin',
    reconnectPeriod: 5000,
  });

  app.client.on('message', function(topic, message, packet) {
    console.log(message.toString());
    if (app.that) app.that.onMessage(topic, JSON.parse(message.toString()));
  });

  app.client.on('connect', function(err) {
    //console.log("监听连接状态", err);
  });

  app.client.on('close', function(res) {
    // console.log("监听连接关闭");
    if (!app.client._activeEndFlag) {
      // 重新建立连接
      app.client.reconnect()
    }
  });

  app.client.on('error', function(err) {
    console.log("连接失败", err);
  });
}

/**
 * mqtt 重新连接
 */
var mqttConnect = function() {
  if (app.client == null) {
    mqttClient();
  }
  app.client.reconnect()
}

/**
 * mqtt 断开连接
 */
var mqttClose = function() {
  if (app.client == null) {
    mqttClient();
  }
  app.client.end(true, function(err) {
    console.log("断开连接", err);
  });
}

/**
 * 订阅主题
 */
var mqttSubscribe = function(top, page) {
  if (app.client == null) {
    mqttClient();
  }
  if (top == 1 && app.appTop1) {
    mqttunSubscribe(app.appTop1);
  }
  if (top == 2 && app.appTop2) {
    mqttunSubscribe(app.appTop2);
  }

  console.log("开始订阅信息" + top, mqttTop(top));
  app.client.subscribe(mqttTop(top), function(err) {
    console.log("订阅主题" + mqttTop(top), err);
  })
}

/**
 * 订阅主题
 */
var mqttSubscribe1 = function(top) {
  app.client.subscribe(top, function(err) {
    console.log("订阅主题", err);
  })
}

/**
 * 取消订阅
 */
var mqttunSubscribe = function(top) {
  app.client.unsubscribe(top, function(err) {
    console.log("取消订阅", err,top);
  });
}

/**
 * 发布订阅
 */
var mqttPubish = function(top) {
  if (app.client == null) {
    mqttClient();
  }
  app.client.publish(top, "hello");
}

/**
 * 接收消息
 */
var mqttOn = function(that) {
  if (app.client == null) {
    mqttClient();
  }
  app.that = that;
}

/**
 * 订单主题
 */
var mqttTop = function(type) {
  var store = wx.getStorageSync("store");
  var tenantId = app.globalData.tenantId;
  var storeId = store.storeId;
  if (type == 1) { // 接单主题
    return app.appTop1 = app.baseTopic + "/" + app.openId;
  }

  if (type == 2) { // 售罄主题
    return app.appTop2 = app.baseTopic2 + "/" + tenantId + "/" + storeId;
  }

  if (type == 3) {
    return app.getPayCode();
  }
  if (type == 4) {
    return app.getCouponConsumeCode(app.globalData.oldCode);
  }
  if (type == 5) {
    return  app.appTop3 = app.baseTopic3+ "/" + tenantId + "/" + storeId;
  }
  if(type==6) {  //骑手接单
    var orderNo=app.globalData.orderNo;
    return app.baseTopic4 + "/" + tenantId + "/" + orderNo;
  }
}

module.exports = {
  mqttunSubscribe: mqttunSubscribe,
  mqttSubscribe: mqttSubscribe,
  mqttPubish: mqttPubish,
  mqttOn: mqttOn,
  mqttTop: mqttTop
}