classroom-instruments/src/components/card-preview/video-modal/index.tsx

import { defineComponent, nextTick, onMounted, reactive, toRefs } from 'vue';
// import 'plyr/dist/plyr.css';
// import Plyr from 'plyr';
import { ref } from 'vue';
import TCPlayer from 'tcplayer.js';
import 'tcplayer.js/dist/tcplayer.min.css';
import styles from './index.module.less';
import iconplay from '@views/attend-class/image/icon-pause.png';
import iconpause from '@views/attend-class/image/icon-play.png';
import iconReplay from '@views/attend-class/image/icon-replay.png';
import iconPreviewDownload from '@views/attend-class/image/icon-preivew-download.png';
import iconSpeed from '@views/attend-class/image/icon-speed.png';
import { NSlider, useMessage } from 'naive-ui';
import { saveAs } from 'file-saver';

export default defineComponent({
  name: 'video-play',
  props: {
    src: {
      type: String,
      default: ''
    },
    title: {
      type: String,
      default: ''
    },
    poster: {
      type: String,
      default: ''
    },
    isEmtry: {
      type: Boolean,
      default: false
    },
    isDownload: {
      type: Boolean,
      default: false
    }
  },
  emits: ['loadedmetadata', 'togglePlay', 'ended', 'reset'],
  setup(props, { emit, expose }) {
    const message = useMessage();
    const { src, poster, isEmtry } = toRefs(props);
    const videoFroms = reactive({
      paused: true,
      currentTimeNum: 0,
      currentTime: '00:00',
      durationNum: 0,
      duration: '00:00',
      showBar: true,
      speedControl: false,
      speedStyle: {
        left: '1px'
      },
      defaultSpeed: 1 // 默认速度
    });
    const videoRef = ref();
    const videoItem = ref();
    const videoID = 'video' + Date.now() + Math.floor(Math.random() * 100);

    // 对时间进行格式化
    const timeFormat = (num: number) => {
      if (num > 0) {
        const m = Math.floor(num / 60);
        const s = num % 60;
        return (m < 10 ? '0' + m : m) + ':' + (s < 10 ? '0' + s : s);
      } else {
        return '00:00';
      }
    };

    //
    const toggleHideControl = (isShow: false) => {
      videoFroms.showBar = isShow;
      videoFroms.speedControl = false;
    };

    const onReplay = () => {
      videoFroms.speedControl = false;
      if (!videoItem.value) return;
      videoItem.value.currentTime(0);
    };

    // 切换音频播放
    const onToggleVideo = (e?: MouseEvent) => {
      videoFroms.speedControl = false;
      e?.stopPropagation();
      if (videoFroms.paused) {
        videoItem.value.play();
        videoFroms.paused = false;
      } else {
        videoItem.value.pause();
        videoFroms.paused = true;
      }
      emit('togglePlay', videoFroms.paused);
    };

    // 下载资源
    const onDownload = () => {
      if (!props.src) {
        message.error('下载失败');
        return;
      }
      const fileUrl = props.src;
      // 发起Fetch请求
      fetch(fileUrl)
        .then(response => response.blob())
        .then(blob => {
          saveAs(blob, props.title || new Date().getTime() + '');
        })
        .catch(() => {
          message.error('下载失败');
        });
    };

    const __init = () => {
      if (videoItem.value) {
        videoItem.value.poster(poster.value); // 封面
        videoItem.value.src(isEmtry.value ? '' : src.value); // url 播放地址

        // 初步加载时
        videoItem.value.one('loadedmetadata', () => {
          console.log(' Loading metadata');

          // 获取时长
          videoFroms.duration = timeFormat(
            Math.round(videoItem.value.duration())
          );
          videoFroms.durationNum = videoItem.value.duration();

          emit('loadedmetadata', videoItem.value);
        });

        // 视频播放时加载
        videoItem.value.on('timeupdate', () => {
          videoFroms.currentTime = timeFormat(
            Math.round(videoItem.value?.currentTime() || 0)
          );
          videoFroms.currentTimeNum = videoItem.value.currentTime();
        });

        // 视频播放结束
        videoItem.value.on('ended', () => {
          videoFroms.paused = true;
          emit('ended');
        });
      }
    };

    onMounted(() => {
      videoItem.value = TCPlayer(videoID, {
        appID: '',
        controls: false
      }); // player-container-id 为播放器容器 ID，必须与 html 中一致
      __init();
    });
    expose({
      // changePlayBtn,
      toggleHideControl
    });
    return () => (
      <div class={styles.videoWrap}>
        <video
          style={{ width: '100%', height: '100%' }}
          src={isEmtry.value ? '' : src.value}
          poster={poster.value}
          ref={videoRef}
          id={videoID}
          preload="auto"
          playsinline
          webkit-playsinline></video>

        <div
          class={[
            styles.controls,
            videoFroms.showBar ? '' : styles.sectionAnimate
          ]}
          onClick={(e: MouseEvent) => {
            e.stopPropagation();
            emit('reset');
          }}>
          <div class={styles.actions}>
            <div class={styles.actionWrap}>
              <button class={styles.actionBtn} onClick={onToggleVideo}>
                {videoFroms.paused ? (
                  <img class={styles.playIcon} src={iconplay} />
                ) : (
                  <img class={styles.playIcon} src={iconpause} />
                )}
              </button>

              <button class={styles.iconReplay} onClick={onReplay}>
                <img src={iconReplay} />
              </button>

              <div
                class={styles.actionBtnSpeed}
                onClick={() => {
                  videoFroms.speedControl = !videoFroms.speedControl;
                }}>
                <img src={iconSpeed} />
              </div>
            </div>
          </div>

          <div class={styles.slider}>
            <NSlider
              value={videoFroms.currentTimeNum}
              step={0.01}
              max={videoFroms.durationNum}
              tooltip={false}
              onUpdate:value={(val: number) => {
                videoFroms.speedControl = false;
                videoItem.value.currentTime(val);
                videoFroms.currentTimeNum = val;
                videoFroms.currentTime = timeFormat(Math.round(val || 0));
              }}
            />
          </div>

          <div class={styles.actions}>
            <div class={styles.time}>
              <div
                class="plyr__time plyr__time--current"
                aria-label="Current time">
                {videoFroms.currentTime}
              </div>
              <span class={styles.line}>/</span>
              <div
                class="plyr__time plyr__time--duration"
                aria-label="Duration">
                {videoFroms.duration}
              </div>
            </div>
            <div class={styles.actionWrap}>
              {props.isDownload && (
                <button class={styles.iconDownload} onClick={onDownload}>
                  <img src={iconPreviewDownload} />
                </button>
              )}
            </div>
          </div>
        </div>

        <div
          style={{
            display: videoFroms.speedControl ? 'block' : 'none'
          }}>
          <div
            class={styles.sliderPopup}
            onClick={(e: Event) => {
              e.stopPropagation();
            }}>
            <i
              class={styles.iconAdd}
              onClick={() => {
                if (videoFroms.defaultSpeed >= 1.5) {
                  return;
                }

                if (videoItem.value) {
                  videoFroms.defaultSpeed =
                    (videoFroms.defaultSpeed * 10 + 1) / 10;
                  videoItem.value.playbackRate(videoFroms.defaultSpeed);
                }
              }}></i>
            <NSlider
              value={videoFroms.defaultSpeed}
              step={0.1}
              max={1.5}
              min={0.5}
              vertical
              tooltip={false}
              onUpdate:value={(val: number) => {
                videoFroms.defaultSpeed = val;
                if (videoItem.value) {
                  videoItem.value.playbackRate(videoFroms.defaultSpeed);
                }
              }}>
              {{
                thumb: () => (
                  <div class={styles.sliderPoint}>
                    {videoFroms.defaultSpeed}
                    <span>x</span>
                  </div>
                )
              }}
            </NSlider>
            <i
              class={[styles.iconCut]}
              onClick={() => {
                if (videoFroms.defaultSpeed <= 0.5) {
                  return;
                }
                if (videoItem.value) {
                  videoFroms.defaultSpeed =
                    (videoFroms.defaultSpeed * 10 - 1) / 10;
                  videoItem.value.playbackRate(videoFroms.defaultSpeed);
                }
              }}></i>
          </div>
        </div>
      </div>
    );
  }
});