<template>
  <div>
      <div class="video_box">
        <div class="video_center">
              <div class="resource-container" style="width:70%;position:relative;">
                <div class="video-title">1233123</div>
                <template>
                  <video
                    ref="video"
                    id="video"
                    src="./cat.mp4"
                    :autoplay="videolist.autoplay"
                    :controls="videolist.controls"
                    :controlslist="videolist.controlslist"
                    :webkit-playsinline="webkitplaysinline"
                    style="width:100%;height:100%"
                  >
                  </video>
                </template>
              </div>
              <div style="width:30%" class="video_right">
                <p style="padding:1rem;">选集</p>
                <ul>
                  <li v-for="(item,index) in 3" :key="index" 
                  style="cursor:pointer;padding:10px;"
                  :class="activeIndex == index + '' ? 'video-active':''"
                  @click="open(item,index)"
                  >{{index + 1}}. 中华人民...</li>
                </ul>
              </div>
        </div>
      </div>
  </div>
</template>

<script>
export default {
  name: '',
  data() {
    return {
      videolist:{
        autoplay:false, // 自动播放
        controls:'controls', //操作
        controlslist:'nodownload   noplaybackrate' 
        /*
        1、nodownload: 不要下载按钮
        2、nofullscreen: 不要全屏按钮
        3、noremoteplayback: 不要远程回放
        4、disablePictureInPicture 不要画中画按钮
        5、noplaybackrate 不要播放速度按钮
        */
      }, //video配置
      webkitplaysinline:'true',
      playHistory:{
        resourceIndex:-1,
        currentFileIndex:-1,
        currenTime:0
      }, //初始化时定位到的历史播放记录
      videoPlayer:null,
      activeIndex:'0', //右侧课程选择切换背景色
      currentResource:{} //当前的资源
    }
  },
  mounted(){
    this.querylist()
  },
  methods: {
    querylist(){
      this.$nextTick(() => {
        this.initVideoplayer()
        this.fileTimelengthRecord()
      })
    },
    initVideoplayer(){
      if(!this.videoPlayer && this.$refs.video){
        this.videoPlayer = this.$refs.video

        // 视频进度改变 -- 播放即触发
        this.videoPlayer.addEventListener('timeupdate',(e) => {
          // console.log(this.videoPlayer.currentTime,'currentTime') //当前播放进度
          // console.log(this.videoPlayer.duration,'duration') //当前播放进度
          sessionStorage.setItem('currentTime',this.videoPlayer.currentTime)
          sessionStorage.setItem('duration',this.videoPlayer.duration)
        })

        //视频暂停 --  点击暂停（退出也会触发并记录时间）
        this.videoPlayer.addEventListener('pause',(e) => {
          // this.fileTimelengthRecord(this.videoPlayer.currentTime,this.videoPlayer.duration)
        })

        // // 进度拖动
        // this.videoPlayer.addEventListener('seeking',(e) => {
        //   console.log(this.videoPlayer.currentTime,'seeking进行拖动')
        // })

        // // 进度拖动（进度条拖动会先 pause --> seeked--->play）
        // this.videoPlayer.addEventListener('seeked',(e) => {
        //   console.log(this.videoPlayer.currentTime,'seeked进行拖动')
        // })

        // 视频播放 -- 点击播放
        this.videoPlayer.addEventListener('play',(e) => {})

        // 视频播放 -- 播放结束
        this.videoPlayer.addEventListener('ended',(e) => {
          console.log(this.videoPlayer.currentTime,'ended 播放完成')
        })

        //   // 禁止快进
        // let sym
        // setInterval(() => {
        //     let time = this.videoPlayer.currentTime
        //     if(time-sym>1){
        //         this.videoPlayer.currentTime=sym
        //     }
        //     sym=this.videoPlayer.currentTime
        // },500)
      }
    },
    // 进度记录更新 - 记录当前播放附件的时长
    fileTimelengthRecord(){
      let stat = sessionStorage.getItem('currentTime')
      let end =  sessionStorage.getItem('duration')
      if(stat > 0){
        this.ifopen()
      }else{
        this.videoPlayer.currentTime = 0
      }
    },
    ifopen(){
      this.$confirm('是否从上次的记录开始播放?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          let stat = sessionStorage.getItem('currentTime')
          this.videoPlayer.currentTime = stat
          this.videoPlayer.play()
        }).catch(() => {
          this.videoPlayer.currentTime = 0
          this.videoPlayer.pause()
        })
    },

    open(it,id){
      // sessionStorage.setItem('arrylistId',id)
      sessionStorage.setItem('currentTime',0)
      sessionStorage.setItem('duration',0)
      this.activeIndex = id
    }
  }
}
</script>

<style scoped>
.video_box{
  margin: 0 auto;
  margin-top: 50px;
  width: 1450px;
  height: 640px;
  border: 1px solid #ccc;
  background: #000;
}
.video_center{
  margin: 20px auto;
  width: 1400px;
  height: 600px;
  background: #3f3f3f;
  display: flex;
  justify-content: space-between;
}
.video-title{
  width: 100%;
  display: none;
  padding: 1rem;
  position: absolute;
  top: 0;
  color: #fff;
  background-color: rgb(6, 6, 6,0.3);
  z-index: 2;
}
.resource-container:hover .video-title{
  display: block;
}
.video_right > p{
   background-color: rgb(6, 6, 6,0.3);
  color: #fff;
}
.video-active{
 background-color: rgb(6, 6, 6,0.3);
  color: aqua;
}

/* 全屏按钮 */
    /* video::-webkit-media-controls-fullscreen-button {
        display: none;
    } */
/* 播放按钮 */
    /* video::-webkit-media-controls-play-button {
        display: none;
    } */
/* 进度条 */
    video::-webkit-media-controls-timeline {
        display: none;
    }
/* 观看的当前时间 */
    /* video::-webkit-media-controls-current-time-display{
        display: none;            
    } */
/* 剩余时间 */
    /* video::-webkit-media-controls-time-remaining-display {
        display: none;            
    } */
/* 音量按钮 */
    /* video::-webkit-media-controls-mute-button {
        display: none;            
    } */
    /* video::-webkit-media-controls-toggle-closed-captions-button {
        display: none;            
    } */
/* 音量的控制条 */
    /* video::-webkit-media-controls-volume-slider {
        display: none;            
    } */
/* 所有控件 */
    /* video::-webkit-media-controls-enclosure{ 
        display: none;
    } */
</style>