import {getToken} from './token'
import { MyMqttManager } from '@/uni_modules/flight-mqtt';
  
export class Onenet {
  url = "tcp://mqtts.heclouds.com:1883" 
  productId = ""
  deviceName = ""
  secretKey = ""
  userId = ""       //用户id
  userSecretKey = "" //用户 访问秘钥
  mqtt = null
  dataId = 1 // 上传数据时的编号
  
  topics = {} //主题及对应的处理方法
  
  /**
   * @param {string} pid 产品Id
   * @param {string} dn  设备名称
   * @param {string} sk  产品秘钥
   * @param {string} usk 用户账号访问秘钥
   * @param {string} url onenet 链接服务器地址， 默认为"tcp://mqtts.heclouds.com:1883"
   */
  constructor(pid, dn, sk, usk, uid, url){
    if(!!url){
      this.url = url
    }
    
    this.productId = pid
    this.deviceName = dn
    this.secretKey = sk
    this.userSecretKey = usk
    this.userId = uid
  }
  
  /**
   * @param {Object} topic   接收到的publish 主题
   * @param {Object} content 接收到的publish 载荷
   */
  receiveProcess(topic, content){
    console.log(topic, content)
  }
  
  connectParam(pid, dn, sk) {
    const res = `products/${pid}/devices/${dn}`;
    const token = getToken(res, "sha1", sk)
    
    return {
      clientId: dn,
      username: pid,
      password: token
    }
  }
  
  connectMqttServer(){
    const mqtt = new MyMqttManager()
    mqtt.on(this.receiveProcess)
    
    let param = this.connectParam(this.productId, this.deviceName, this.secretKey)
    mqtt.connect(this.url, param.clientId, param.username, param.password);
    mqtt.initCallback();
    this.mqtt = mqtt
  }
  
  subscript(type, fn){
    this.mqtt.subscript(this.generateTopic(type))
    this.topics[type] = fn
  }
  
  publishRealData(fn){
    let data = fn()
    let real = {
      "id": (this.dataId++).toString(),
      "version": "1.0",
      "params": {}
    }
    
    if(typeof data === "string") {
      try{        
        data = JSON.parse(data)
      }catch(e){
        //TODO handle the exception
        console.log("传入数据格式错误")
        return
      }
    }
    const keys = Object.keys(data);
    
    const timestamp = Date.now();
    keys.forEach((key) => {
        const value = data[key];
        
        real.params[key] = {
          time: timestamp,
          value: value
        }
    });
    
    this.mqtt.publish(this.generateTopic("property"), JSON.stringify(real))
  }
  
  generateTopic(type) {
    switch(type) {
      case "property":
        return `$sys/${this.productId}/${this.deviceName}/thing/property/post`
      case 'propertyRespond':
        return `$sys/${this.productId}/${this.deviceName}/thing/property/post/reply`
      case "setProperty":
        return `$sys/${this.productId}/${this.deviceName}/thing/property/set`
      case 'setPropertyRespond':
        return `$sys/${this.productId}/${this.deviceName}/thing/property/set/reply`
      default:
        return `$sys/${this.productId}/${this.deviceName}/thing/property/get`
    }
  }
  
  
  apiParam(uid, usk) {
    const res = `userid/${uid}`;
    const token = getToken(res, "sha1", usk)
    
    return token
  }
  
  uploadFile(file) {
        return new Promise((resolve, reject) => {
          uni.uploadFile({
            url: 'https://iot-api.heclouds.com/device/file-upload',
            filePath: file,
            name: "file",
            formData: {
              imei: this.deviceName,
              device_name: this.deviceName,
              product_id: this.productId
            },
            header:{
              authorization: this.apiParam(this.userId, this.userSecretKey)
            },
            success: uploadFileRes => {
              if(uploadFileRes.statusCode == 200) {
                // getApp().$loger.log('上传成功', uploadFileRes, file)
                console.log('上传成功', uploadFileRes, file)
                
                resolve(uploadFileRes)
              }
              else
              {
                // getApp().$loger.log('上传失败', uploadFileRes, file)
                console.log('上传失败', uploadFileRes, file)
                
                reject(Error(uploadFileRes.errMsg))
              }
            },
            fail: err => {
              // getApp().$loger.log('上传失败', err);
                console.log('上传失败', err);
              
              reject(err)
            },
            complete: console.log
          });
        })
  }
}