Component({

  /**
   * 组件的属性列表
   */
  properties: {
    start:{
      type:Boolean,
      value:false,
      observer(s){
        console.log(s);
        if(s){
          this.start();
        }else{
          this.stop();
        }
      }
    }
  },

  /**
   * 组件的初始数据
   */
  data: {
    emptyAudio:'',
    haveOrderAudio:'',
    initing:true
  },
  lifetimes:{
    attached(){
      this.data.initing = true;
      this.downloadResource().then(()=>{
        this.bgam = wx.getBackgroundAudioManager();
        this.bgam.title = '后台通知';
        this.bgam.audioType = 'music';
        this.bgam.coverImgUrl = 'https://dman-1311994147.cos.ap-chengdu.myqcloud.com/static/logo_large.jpg';
        this.bgam.onEnded(()=>{
          this.bgam.src = this.data.emptyAudio;
        });
        this.bgam.onStop(()=>{
          this.triggerEvent('stop')
        });
        this.triggerEvent('initSuccess');
      }).catch(()=>{
        this.triggerEvent('initError');
      })
      
    }
  },
  /**
   * 组件的方法列表
   */
  methods: {
    async downloadResource(){
      this.data.emptyAudio = `${wx.env.USER_DATA_PATH}/empty.wav`;
      const emptyServerPath = 'https://dman-1311994147.cos.ap-chengdu.myqcloud.com/static/silence_file.wav';
      this.data.haveOrderAudio = `${wx.env.USER_DATA_PATH}/haveorder.mp3`;
      const haveOrderPath = 'https://dman-1311994147.cos.ap-chengdu.myqcloud.com/static/new_order.mp3';
      await this.download(this.data.emptyAudio,emptyServerPath);
      await this.download(this.data.haveOrderAudio,haveOrderPath);
    },
    async download(localPath,serverPath){
      try {
        //判断文件是否存在
        const fs = wx.getFileSystemManager();
        fs.accessSync(localPath);
      } catch (error) {
        await this.downloadFile(serverPath,localPath);
      }
    },
    start(){
      this.bgam.src = this.data.emptyAudio;
      if(this.loopOrderTimer){
        clearInterval(this.loopOrderTimer);
      }
      this.loopOrderTimer = setInterval(()=>{
        this.triggerEvent('onTrigger');
      },10000);
    },
    stop(){
      if(this.loopOrderTimer){
        clearInterval(this.loopOrderTimer);
      }
      if(this.bgam){
        this.bgam.stop();
      }
    },
    notice(){
      //这里通知改为下面的inneraudio 之前用的上面的 但是突然有一天 在切换 src 之后会执行onStop
      //从而导致停止播放音乐逻辑 不知道为什么  怀疑微信偷偷改东西或者手机问题

      // this.bgam.src = this.data.haveOrderAudio;
      // this.bgam.onEnded(()=>{
      //   this.bgam.src = this.data.emptyAudio;
      // });


      console.log('notice order');
      const innerAudioContext = wx.createInnerAudioContext({
        useWebAudioImplement:true
      })
      innerAudioContext.src = this.data.haveOrderAudio;
      innerAudioContext.play();
      innerAudioContext.onEnded(()=>{
        innerAudioContext.destroy();
      })
    },
    downloadFile(url,filePath){
      console.log('download',url,filePath);
      return new Promise((rs,rj)=>{
        wx.downloadFile({
          url: url,
          filePath: filePath,
          success: (result) => {
            console.log('success',result);
            rs()
          },
          fail: (res) => {
            console.log('error',res.errMsg,url,filePath);
            rj()
          }
        })
      })
    }
  }
})