veterans_H5/h5_web/pages/skillsTraining/courseDetailed/courseDetailed.vue

<template>
  <view class="details">
    <u-navbar back-text="" title="" back-icon-color="#FFFFFF" :background="{ background: '#3D5D4C' }" :border-bottom="false"></u-navbar>
    <!-- 视频 -->
    <view class="details-video" v-if="isPlay" v-loading="videoLoading">
      <video
        class="details-video-con"
        id="myVideo"
        @timeupdate="timeUpdate"
        :src="videoInfo.videoUrl"
        controls
        :initial-time="initial_time"
        object-fit="fill"
        play-btn-position="center"
        @ended="ended"
        @tap="videoClick"
        @loadedmetadata="loadedmetadata"
      >
        <cover-view class="video-control">
          <cover-view class="multi rate" @tap.stop="showSwitchRate">x {{ currentRate }}</cover-view>
        </cover-view>
        <cover-view class="multi-list rate" :class="{ active: rateShow }">
          <cover-view
            v-for="(item, index) in ['0.5', '1.0', '1.5', '2.0']"
            :key="index"
            class="multi-item rate"
            :data-rate="item"
            @tap="switchRate"
            :class="{ active: item == currentRate }"
          >
            {{ item }}
          </cover-view>
        </cover-view>
      </video>
    </view>
    <!-- 介绍 -->
    <view class="details-content">
      <view class="details-content-title">{{ videoInfo.chapterName || '-' }}</view>
      <view class="details-content-progress"
        >本课程 共{{ info.amount || 0 }}课，已学完{{ info.finishCount || 0 }}课，共进度{{ info.finishPercent || 0 }}%</view
      >
      <view class="details-content-teacher">主讲老师：{{ info.presenter || '-' }}</view>
      <view class="details-content-info">{{ videoInfo.chapterInfo || '-' }}</view>
    </view>

    <!-- 课程章节 -->
    <view class="details-classes">
      <view class="details-classes-header">
        <view>精选课程</view>
        <view>
          更多
          <u-icon name="arrow-right" size="22" color="#A3A3A3" />
        </view>
      </view>
      <view class="details-classes-list">
        <view
          class="details-classes-list-item"
          v-for="(item, index) in info.chapterList"
          :key="index"
          :class="{ active: index === videoIndex }"
          @click="classesClick(index)"
        >
          <view>{{ index + 1 }}</view>
          <view>{{ item.flag === 2 ? '已学' : item.finishPercent + '%' }}</view>
        </view>
      </view>
    </view>
    <view class="details-line">
      <view></view>
    </view>
    <!-- 评论 -->
    <view class="details-comment">
      <view class="details-comment-header">
        <view>课程评论</view>
        <view>共{{ total || 0 }}条评论</view>
      </view>
      <view class="details-comment-list">
        <view class="details-comment-list-item" v-for="(item, index) in commentList" :key="index">
          <view class="left">
            <u-avatar :src="item.createByAvatar" size="96" mode="square"></u-avatar>
          </view>
          <view class="right">
            <view>{{ item.createBy }}</view>
            <view>
              <u-rate :count="5" size="28" disabled="" active-color="#FFBC00" v-model="item.starLevel"> </u-rate>
              <text>{{ item.createTime }}</text>
            </view>
            <view>{{ item.content }}</view>
          </view>
        </view>
      </view>
      <view class="details-comment-page" v-if="total">
        <wyb-pagination :padding="0" :totalItems="total" :current="query.pageNum" @change="pageChange" />
      </view>
      <view class="details-comment-mine"><text>我的评论</text></view>
      <view class="details-comment-conent">
        <view class="details-comment-conent-star">
          <u-rate :count="5" size="40" active-color="#FFBC00" v-model="form.starLevel"></u-rate>
        </view>
        <view class="details-comment-content-textarea">
          <u-input
            v-model="form.content"
            placeholder="请输入您的评价"
            type="textarea"
            :custom-style="{ backgroundColor: '#F5F5F5', padding: '30rpx', borderRadius: '10rpx', minHeight: '280rpx' }"
          >
          </u-input>
        </view>
        <view class="details-comment-conent-button" @click="submitCommet">提交</view>
      </view>
    </view>
    <u-toast ref="uToast" />
  </view>
</template>

<script>
export default {
  data() {
    return {
      info: {},
      videoContext: uni.createVideoContext('myVideo', this),
      videoInfo: {},
      videoIndex: 0,
      // 视频实时时间
      initial_time: 0,
      // 视频已经播放时间
      playedTime: 0,
      rateShow: false, // 倍速浮层
      currentRate: 1.0, // 默认倍速
      // 视频实际时间
      video_real_time: 0,
      classesId: '',
      isPlay: true,
      query: {
        pageNum: 1,
        pageSize: 5,
        tabId: ''
      },
      total: 0,
      commentList: [],
      form: {
        tabId: '',
        starLevel: 0,
        content: ''
      },
      currentDuration: 0,
      duration: 0,
      isApply: 1,
      // 视频加载层
      videoLoading: false
    };
  },
  onLoad(page) {
    if (page.id) {
      this.getClassesDetails(page.id);
      this.classesId = page.id;
      this.query.tabId = this.classesId;
      this.form.tabId = this.classesId;
      this.isApply = page.isApply || 1;
    }
  },
  beforeDestroy() {
    this.confirmSubmitDuration();
  },
  methods: {
    /**
     * 获取视频总时长
     * @param {Object} data
     */
    loadedmetadata(data) {
      this.duration = data.detail.duration;
      this.videoLoading = false;
    },
    /**
     * 显示倍速浮层
     * @param {Object} rate
     */
    showSwitchRate(rate) {
      let that = this;
      that.rateShow = true;
    },
    /**
     * 切换倍速
     * @param {Object} e
     */
    switchRate(e) {
      let that = this;
      let rate = Number(e.currentTarget.dataset.rate);
      that.currentRate = rate;
      that.rateShow = false;
      this.videoContext.playbackRate(rate);
    },
    /**
     * 视频点击
     * @param {Object} e
     */
    videoClick(e) {
      this.rateShow = false;
    },
    pause(e) {
      console.log(e);
    },
    /**
     * 获取课程详情
     * @param {Object} id
     */
    getClassesDetails(id) {
      this.videoLoading = true;
      this.$u.api.school
        .getPackageCourseDetail({
          id
        })
        .then((res) => {
          if (res.code === 200) {
            this.info = res.data;
            this.videoInfo = res.data.chapterList[this.videoIndex];
            this.initial_time = Number(res.data.chapterList[this.videoIndex].currentDuration);
            this.video_real_time = Number(res.data.chapterList[this.videoIndex].playDuration);
            this.playedTime = Number(res.data.chapterList[this.videoIndex].playDuration);
            this.query.pageNum = 1;
            this.isPlay = true;
            this.getCommentList();
          }
        });
    },
    /**
     * 课程章节点击
     * @param {Object} index
     */
    classesClick(index) {
      this.isPlay = false;
      let playDuration = this.video_real_time;
      if (this.videoInfo.playDuration > this.video_real_time) {
        this.currentDuration = this.video_real_time;
        playDuration = this.videoInfo.playDuration;
      } else {
        this.currentDuration = this.video_real_time;
      }
      this.submitTimeLong(
        {
          tabId: this.videoInfo.id,
          playDuration: playDuration,
          duration: this.duration,
          currentDuration: this.currentDuration
        },
        index
      );
    },
    /**
     * 控制视频不能快进
     * @param {Object} e
     */
    timeUpdate(e) {
      //播放的总时长
      let duration = e.detail.duration;
      //实时播放进度 秒数
      let jumpTime = parseInt(e.detail.currentTime);
      //当前视频进度
      if (jumpTime - this.playedTime > 3) {
        // 差别过大，调用seek方法跳转到实际观看时间
        this.videoContext.seek(this.playedTime);
        wx.showToast({
          title: '未完整看完该视频，不能快进',
          icon: 'none',
          duration: 2000
        });
      } else {
        this.video_real_time = parseInt(e.detail.currentTime);
        if (this.video_real_time > this.playedTime) {
          this.playedTime = this.video_real_time;
        }
      }
      if (parseInt(this.duration) !== 0 && parseInt(this.duration) === parseInt(this.video_real_time)) {
        this.videoContext.pause();
        this.confirmSubmitDuration();
      }
    },
    /**
     * 视频结束
     */
    ended() {
      // 用户把进度条拉到最后，但是实际观看时间不够，跳转回去会自动暂停。
      // 这里加个判断。
      if (this.playedTime < this.duration) {
        this.videoContext.play();
        this.confirmSubmitDuration();
      }
    },
    /**
     * 提交课程时长
     */
    submitTimeLong({ tabId, playDuration, currentDuration, duration }, index, flag) {
      if (tabId) {
        this.$u.api.training
          .videoTimeLongApi({
            tabId,
            playDuration,
            currentDuration,
            duration
          })
          .then((res) => {
            if (res.code === 200) {
              if (!flag) {
                this.$refs.uToast.show({
                  title: '已记录章节时长!',
                  type: 'success'
                });
                this.videoInfo = this.info.chapterList[index];
                this.videoIndex = index;
                this.getClassesDetails(this.classesId);
              }
            } else {
              this.$refs.uToast.show({
                title: res.msg,
                type: 'error'
              });
            }
          });
      }
    },
    /**
     * 获取评论列表
     */
    getCommentList() {
      if (this.query.tabId) {
        this.$u.api.training.getClassesCommentApi(this.query).then((res) => {
          if (res.code === 200) {
            this.total = Number(res.total);
            this.commentList = res.rows;
          }
        });
      }
    },
    /**
     * @param {Object} e 分页触发
     */
    pageChange(e) {
      this.query.pageNum = e.current;
      this.getCommentList();
    },
    /**
     * 提交评论
     */
    submitCommet() {
      if (this.form.tabId) {
        if (this.form.starLevel && this.form.content) {
          this.$u.api.training.addClassesCommentApi(this.form).then((res) => {
            if (res.code === 200) {
              this.$refs.uToast.show({
                title: '评论成功!',
                type: 'success'
              });
              this.form.content = '';
              this.form.starLevel = 0;
              this.getCommentList();
            } else {
              this.$refs.uToast.show({
                title: res.msg,
                type: 'error'
              });
            }
          });
        }
        if (!this.form.starLevel) {
          this.$refs.uToast.show({
            title: '请选择星级',
            type: 'warning'
          });
        }
        if (!this.form.content) {
          this.$refs.uToast.show({
            title: '请输入评论内容',
            type: 'warning'
          });
        }
      } else {
        this.$refs.uToast.show({
          title: '未找到课程章节,无法提交评论!',
          type: 'warning'
        });
      }
    },
    confirmSubmitDuration() {
      let playDuration = this.video_real_time;
      if (this.videoInfo.playDuration > this.video_real_time) {
        this.currentDuration = this.video_real_time;
        playDuration = this.videoInfo.playDuration;
      } else {
        this.currentDuration = this.video_real_time;
      }
      if (Number(this.isApply) === 1) {
        this.submitTimeLong(
          {
            tabId: this.videoInfo.id,
            playDuration: playDuration,
            currentDuration: this.currentDuration,
            duration: this.duration
          },
          0,
          true
        );
      }
    }
  }
};
</script>

<style lang="scss" scoped>
@import './courseDetailed.scss';
</style>