const app = getApp();
const util = require('../../util/util.js');

const backgroundAudioManager = xhs.getBackgroundAudioManager();
let updateInterval;

Page({
  onShareAppMessage() {
    return {
      title: '背景音乐',
      path: 'packageAPI/pages/background-audio/background-audio',
    };
  },
  onShow() {
    if (!backgroundAudioManager.paused && backgroundAudioManager.paused !== undefined) {
      this._enableInterval();
      this.setData({
        playing: true,
      });
    }
  },
  onLoad() {
    const that = this;
    // 监听播放事件
    backgroundAudioManager.onPlay(() => {
      // 刷新播放时间
      this._enableInterval();
      this.setData({
        pause: false,
      });
    });

    // 监听暂停事件
    backgroundAudioManager.onPause(() => {
      clearInterval(updateInterval);
      that.setData({
        playing: false,
        pause: true,
      });
    });

    backgroundAudioManager.onEnded(() => {
      clearInterval(updateInterval);
      that.setData({
        playing: false,
        playTime: 0,
        formatedPlayTime: util.formatTime(0),
      });
    });

    backgroundAudioManager.onStop(() => {
      clearInterval(updateInterval);
      that.setData({
        playing: false,
        playTime: 0,
        formatedPlayTime: util.formatTime(0),
      });
    });
  },

  data: {
    playing: false, // 播放状态
    pause: false,
    playTime: 0, // 播放时长
    formatedPlayTime: '00:00:00', // 格式化后的播放时长
  },

  play() {
    backgroundAudioManager.title = '此时此刻';
    backgroundAudioManager.epname = '此时此刻';
    backgroundAudioManager.singer = '许巍';
    backgroundAudioManager.coverImgUrl = 'http://y.gtimg.cn/music/photo_new/T002R300x300M000003rsKF44GyaSk.jpg?max_age=2592000';

    const that = this;
    if (that.data.pause) {
      backgroundAudioManager.play();
      this.setData({
        playing: true,
      });
    } else {
      that.setData({
        playing: true,
      }, () => {
        // 设置src后会自动播放
        backgroundAudioManager.src = 'https://dldir1.qq.com/music/release/upload/t_mm_file_publish/2339610.m4a';
      });
    }
  },

  seek(e) {
    backgroundAudioManager.seek(e.detail.value);
  },

  pause() {
    clearInterval(updateInterval);
    backgroundAudioManager.pause();
  },

  stop() {
    clearInterval(updateInterval);
    backgroundAudioManager.stop();
  },

  _enableInterval() {
    const that = this;
    function update() {
      console.log(backgroundAudioManager.currentTime);
      that.setData({
        playTime: backgroundAudioManager.currentTime + 1,
        formatedPlayTime: util.formatTime(backgroundAudioManager.currentTime + 1),
      });
    }
    updateInterval = setInterval(update, 1000);
  },

  onUnload() {
    clearInterval(updateInterval);
  },
});