<!-- eslint-disable -->
<template>
  <view
    v-html="videoHtml"
    id="dom-video"
    class="dom-video"
    :eventDrive="eventDrive"
    :change:eventDrive="domVideo.eventHandle"
    :videoSrc="videoSrc"
    :change:videoSrc="domVideo.srcChange"
    :videoProps="videoProps"
    :change:videoProps="domVideo.propsChange"
    :randomNum="randomNum"
    :change:randomNum="domVideo.randomNumChange"
  />
</template>

<script>
  export default {
    props: {
      src: {
        type: String,
        default: '',
      },
      autoplay: {
        type: Boolean,
        default: false,
      },
      loop: {
        type: Boolean,
        default: false,
      },
      controls: {
        type: Boolean,
        default: false,
      },
      objectFit: {
        type: String,
        default: 'contain',
      },
      muted: {
        type: Boolean,
        default: false,
      },
      poster: {
        type: String,
        default: '',
      },
    },

    // 数据状态
    data() {
      return {
        videoHtml: '',
        videoSrc: '',
        eventDrive: null,
        videoProps: {},
        randomNum: Math.floor(Math.random() * 100000000 + 1),
      };
    },
    watch: {
      // 监听视频资源文件更新
      src: {
        handler(val) {
          if (!val) return;
          this.initVideoHtml();
          setTimeout(() => {
            this.videoSrc = val;
          }, 0);
        },
        immediate: true,
      },
      // 监听首次加载
      autoplay: {
        handler(val) {
          this.videoProps.autoplay = val;
        },
        immediate: true,
      },
    },
    // 生命周期
    mounted() {
      this.initVideoHtml();
    },

    // 方法
    methods: {
      // 将video的事件传递给父组件
      videoEvent(data) {
        // console.log('向父组件传递事件 =>', data)
        this.$emit(data);
      },
      // 初始化视频
      initVideoHtml() {
        this.videoHtml = `<video
          src="${this.src}"
          id="dom-html-video_${this.randomNum}"
          class="dom-html-video"
          ${this.autoplay ? 'autoplay' : ''}
          ${this.loop ? 'loop' : ''}
          ${this.controls ? 'controls' : ''}
          ${this.muted ? 'muted' : ''}
          ${this.poster ? 'poster="' + this.poster + '"' : ''}
          preload="auto"
          playsinline
          webkit-playsinline
          width="100%"
          height="100%"
          style="object-fit: ${this.objectFit};padding:0;"
        >
          <source src="${this.src}" type="video/mp4">
          <source src="${this.src}" type="video/ogg">
          <source src="${this.src}" type="video/webm">
        </video>
      `;
        // console.log('视频html =>', this.videoHtml)
      },
      resetEventDrive() {
        this.eventDrive = null;
      },
      // 将service层的事件/数据 => 传递给renderjs层
      play() {
        this.eventDrive = 'play';
      },
      pause() {
        this.eventDrive = 'pause';
      },
      stop() {
        this.eventDrive = 'stop';
      },
    },
  };
</script>

<script module="domVideo" lang="renderjs">
  export default {
    data() {
      return {
        video: null,
        num: '',
        options: {}
      }
    },
    mounted() {
      this.initVideoEvent()
    },
    methods: {
      initVideoEvent() {
        setTimeout(() => {
          let video = document.getElementById(`dom-html-video_${this.num}`)
          this.video = video

          // 监听视频事件
          video.addEventListener('play', () => {
            this.$ownerInstance.callMethod('videoEvent', 'play')
          })
          video.addEventListener('pause', () => {
            this.$ownerInstance.callMethod('videoEvent', 'pause')
          })
          video.addEventListener('ended', () => {
            this.$ownerInstance.callMethod('videoEvent', 'ended')
            this.$ownerInstance.callMethod('resetEventDrive')
          })
        }, 100)
      },
      eventHandle(eventType) {
        if (eventType) {
          this.video = document.getElementById(`dom-html-video_${this.num}`)

          if (eventType === 'play') {
            this.video.play()
          } else if (eventType === 'pause') {
            this.video.pause()
          } else if (eventType === 'stop') {
            this.video.stop()
          }
        }
      },
      srcChange(val) {
        // 实现视频的第一帧作为封面，避免视频展示黑屏
        this.initVideoEvent()
        setTimeout(() => {
          let video = document.getElementById(`dom-html-video_${this.num}`)

          video.addEventListener('loadedmetadata', () => {
            let { autoplay } = this.options
            video.play()
            if (!autoplay) {
              video.pause()
            }
          })
        }, 0)
      },
      propsChange(obj) {
        this.options = obj
      },
      randomNumChange(val) {
        this.num = val
      },
    }
  }
</script>

<style lang="scss" scoped>
  .dom-video {
    overflow: hidden;
    height: 100%;
    padding: 0;
    &-height {
      height: 100%;
    }
  }
</style>