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">
			<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 }}课，已学完{{ info.finishCount }}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 }}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>
import wybPagination from '@/components/wyb-pagination/wyb-pagination.vue';
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
		};
	},
	onLoad(page) {
		if (page.id) {
			this.getClassesDetails(page.id);
			this.classesId = page.id;
		}
	},
	beforeDestroy() {
		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,
				currentDuration: this.currentDuration,
				duration: this.duration
			},
			0,
			true
		);
	},
	methods: {
		/**
		 * 获取视频总时长
		 * @param {Object} data
		 */
		loadedmetadata(data) {
			this.duration = data.detail.duration;
		},
		/**
		 * 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;
		},
		/**
		 * 获取课程详情
		 * @param {Object} id
		 */
		getClassesDetails(id) {
			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.tabId = res.data.chapterList[this.videoIndex].id;
						this.form.tabId = res.data.chapterList[this.videoIndex].id;
						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;
				}
			}
		},
		/**
		 * 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();
			}
		},
		/**
		 * 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.$refs.uToast.show({
									title: '已记录章节时长!',
									type: 'success'
								});
								this.videoInfo = this.info.chapterList[index];
								this.form.tabId = this.videoInfo.id;
								this.query.tabId = this.videoInfo.id;
								this.videoIndex = index;
								this.getClassesDetails(this.classesId);
							}
						} else {
							this.$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'
				});
			}
		}
	}
};
</script>

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