OnlineEducation-student-front/src/views/student/classCentre/index.vue

<template>
	<a-layout>
		<a-layout-sider v-model:collapsed="collapsed" :trigger="null" collapsible collapsedWidth="0">
			<div class="classTitle">
				<div>{{ classDetail.courseName }}</div>
			</div>
			<a-menu
				v-model:openKeys="openKeys"
				v-model:selectedKeys="selectedKeys"
				theme="dark"
				mode="inline"
				@click="menuClick"
			>
				<a-sub-menu :key="String(idx + 1)" v-for="(item, idx) in classTimeList">
					<template #title>{{ item.name }}</template>
					<a-menu-item :key="itemc.id" v-for="(itemc, idxc) in item.classHours">
						<span class="mr-2">
							<CheckSquareOutlined v-if="selectedKeys.includes(itemc.id)" />
							<BorderOutlined v-else />
						</span>
						<span>{{ itemc.name }}</span>
					</a-menu-item>
				</a-sub-menu>
			</a-menu>
		</a-layout-sider>
		<a-layout>
			<a-layout-header style="padding: 0 20px">
				<div class="flex-between">
					<div>
						<menu-unfold-outlined
							v-if="collapsed"
							class="trigger"
							@click="() => (collapsed = !collapsed)"
							style="font-size: 30px; color: #fff"
						/>
						<menu-fold-outlined
							v-else
							class="trigger"
							@click="() => (collapsed = !collapsed)"
							style="font-size: 30px; color: #fff"
						/>
					</div>
					<div @click="isLike">
						<a-tooltip title="收藏" style="cursor: pointer" :getPopupContainer="(trigger) => trigger.parentElement">
							<heart-outlined :style="{ 'font-size': '20px', color: classDetail.isCollect ? '#ff4d4f' : '#fff' }" />
						</a-tooltip>
					</div>
				</div>
			</a-layout-header>
			<a-layout-content style="overflow-y: auto">
				<a-card :bordered="false">
					<div v-if="videoUrl">
						<video
							style="height: 900px; width: 100%; background-color: #000"
							ref="videoRef"
							controls
							Controlslist="nodownload noplaybackrate noremoteplayback disablePictureInPicture"
							@timeupdate="timeUpdate"
							:currentTime="currentTimenew"
							:poster="videoPoster"
						>
							<source :src="videoUrl" type="video/mp4" />
							<source :src="videoUrl" type="video/ogg" />
							您的浏览器不支持 HTML5 video 标签。
						</video>
					</div>
					<rightMenu
						:idsObj="idsObj"
						:dataList="classTimeData"
						ref="rightNenuRef"
						@videoSpeed="videoSpeed"
						@videoStopTime="videoStopTime"
					></rightMenu>
				</a-card>
				<a-card :bordered="false" class="mt-3">
					<div>
						<div>
							<div v-for="(item,idx) in webCon" >
								<a :href="item.href" target="_blank">{{ item.title }}</a>
							</div>
						</div>
						<a-divider />
						<div>
							在小学和初中，我们已经接触过一些集合.例如，自然数的集合，同一平面内到一个定点的距离等于定长的点的集合(即圆)等.为了更有效地使用集合语言，我们需要进一步了解集合的有关知识.下面先从集合的含义开始.
							看下面的例子:<br/>
							(1)1~10之间的所有偶数;<br/>
							(2)立德中学今年人学的全体高一学生;<br/>
							(3)所有的正方形;<br/>
							(4)到直线l的距离等于定长d的所有点<br/>
							(5)方程x’-3x+2=0的所有实数根;<br/>
							(6)地球上的四大洋.<br/>
							例(1)中，我们把1~10之间的每一个偶数作为元素，这些元素的全体就是一个集合;同样地，<br/>
							例(2)中，把立德中学今年人学的每一位高一学生作为元素，这些元素的全体也是一个集合.
						</div>
					</div>
				</a-card>
				<div style="display: flex; justify-content: center">
					<a-card :bordered="false" class="mt-2" style="width: 100%">
						<a-tabs v-model:activeKey="tabsActiveKey">
							<a-tab-pane key="1" tab="讲义" style="height: 800px">
								<handouts :itemObj="itemObj" :hourId="classHourData.id" v-if="classHourData"></handouts>
							</a-tab-pane>
							<a-tab-pane key="2" tab="字幕" style="height: 800px">
								<subtitleBox :url="danmuObj.url" v-if="tabsActiveKey == 2" @videoSpeed="videoSpeed"></subtitleBox>
							</a-tab-pane>
							<a-tab-pane key="3" tab="笔记" style="min-height: 800px">
								<note
									:idsObj="idsObj"
									ref="noteRef"
									v-if="tabsActiveKey == 3"
									@videoSpeed="videoSpeed"
									@videoStopTime="videoStopTime"
								></note>
							</a-tab-pane>
							<a-tab-pane key="4" tab="问答" style="min-height: 800px">
								<askDiv
									:idsObj="idsObj"
									ref="askDivRef"
									v-if="tabsActiveKey == 4"
									@videoSpeed="videoSpeed"
									@videoStopTime="videoStopTime"
								></askDiv>
							</a-tab-pane>
						</a-tabs>
					</a-card>
				</div>
				<forumBtn :forumData="forumData" resourceType="0"></forumBtn>
			</a-layout-content>
		</a-layout>
	</a-layout>
</template>

<script setup name="classCentre">
	import classCentre from '@/api/student/classCentre'
	import rightMenu from './rightMenu.vue'
	import { useRoute, useRouter } from 'vue-router'
	import sysConfig from '@/config/index'
	import note from './note.vue'
	import askDiv from './ask.vue'
	import handouts from './handouts.vue'
	import subtitleBox from './subtitle.vue'
	import Broadcast from '@/utils/Broadcast.js'

	const route = useRoute()
	const router = useRouter()
	const classDetail = ref({})
	const classTimeList = ref([])
	const classTimeData = ref([])
	const openKeys = ref(['1'])
	const selectedKeys = ref([])
	const collapsed = ref(false)
	const videoRef = ref()
	const currentTimenew = ref(0)
	const idsObj = computed(() => {
		let item = findNodeByKey(classTimeList.value, selectedKeys.value[0], classTimeList.value[0])
		return {
			courseId: route.query.id,
			chapterId: selectedKeys.value[0],
			hourId: classHourData.value?.id,
			...item
		}
	})
	function findNodeByKey(list, id, parent = null) {
		for (const item of list) {
			const itemWithParent = {
				...item,
				parent: parent
			}
			if (itemWithParent.id === id) {
				return itemWithParent
			}
			if (item.classHours && Array.isArray(item.classHours)) {
				const found = findNodeByKey(item.classHours, id, itemWithParent)
				if (found) return found
			}
		}
		return null
	}
	const videoPoster = computed(() => {
		return classTimeData.value.find((r) => r.funcType == 0)?.url
	})
	const getClassData = () => {
		classCentre.addViewCount({ courseId: route.query.id })
		classCentre.courseDetail({ courseId: route.query.id }).then((data) => {
			classDetail.value = data
			classCentre.coursechapterList({ courseId: data.courseId }).then((data) => {
				classTimeList.value = data
				selectedKeys.value = selectedKeys.value[0] ? selectedKeys.value : [data[0]?.classHours[0].id]
				if (selectedKeys.value[0]) {
					menuClick()
				}
			})
		})
	}
	const getClassStatus = (e) => {
		classCentre
			.classGetStatus({
				examPaperId: e.relateId
			})
			.then((res) => {
				const idx = classTimeData.value.findIndex((item) => item.funcType == e.funcType)
				classTimeData.value[idx].status = res.isFinish
				classTimeData.value[idx].answerId = res.answerId
			})
	}
	const classHourData = ref()
	const rightNenuRef = ref()
	const menuClick = (e) => {
		rightNenuRef.value.onClose()
		if (e) {
			addClassPlan(1)
		}
		classCentre.courseTimeDetail({ id: e?.key ? e.key : selectedKeys.value[0] }).then((data) => {
			classHourData.value = data
			classTimeData.value = data.courseRelates.map((r) => {
				return {
					...r,
					url: sysConfig.FILE_URL + r.url
				}
			})
			videoUrl.value = classTimeData.value.find((r) => r.funcType == 1)?.url
			nextTick(() => {
				videoRef.value.src = classTimeData.value.find((r) => r.funcType == 1)?.url
				videoStart()
				footprintClassAdd()
				getVideoTime()

				const funcType4Item = classTimeData.value.find((r) => r.funcType == 4)
				const funcType5Item = classTimeData.value.find((r) => r.funcType == 5)
				if (funcType4Item) {
					getClassStatus(funcType4Item)
				}
				if (funcType5Item) {
					getClassStatus(funcType5Item)
				}
			})
		})
	}

	const tabsActiveKey = ref('1')
	const noteRef = ref()
	const askDivRef = ref()
	const itemObj = computed(() => {
		let item = classTimeData.value.length > 0 ? classTimeData.value.find((r) => r.funcType == 2) : { url: '' }
		return item
	})
	const danmuObj = computed(() => {
		let item = classTimeData.value.length > 0 ? classTimeData.value.find((r) => r.funcType == 3) : { url: '' }
		return item
	})
	const videoUrl = ref('')
	const newsschedule = ref(0)
	const currTime = ref(null)
	const maxTime = ref(0)
	const initialtime = ref(0)
	const videoContext = ref()
	const timeStamp1 = ref()
	const allTime = ref()
	const biNum = ref()
	const currentTime = ref()
	const videoStart = () => {
		videoContext.value = videoRef.value
		if (initialtime.value > 0) {
			videoContext.value.currentTime = initialtime.value
			timeStamp1.value = initialtime.value
		}
	}

	const timeUpdate = (e) => {
		//获取当前播放时间 durationinitialtime
		if (timeStamp1.value != parseInt(e.target.currentTime)) {
			allTime.value = parseInt(e.target.duration) //视频总时长（秒）
			//对播放的时间进行整
			timeStamp1.value = parseInt(e.target.currentTime) //播放进度 (秒)
			biNum.value = Math.floor((timeStamp1.value / allTime.value) * 10000) / 100 //暂时没用到
			currentTime.value = e.target.currentTime
			if (e.srcElement.currentTime - currTime.value > 3) {
				addClassPlan(3)
			}
			if (currTime.value - e.srcElement.currentTime > 3) {
				addClassPlan(3)
			}
			currTime.value = e.srcElement.currentTime
		}
	}

	const videoJumpTime = ref(false)
	const videoSpeed = (e) => {
		videoJumpTime.value = true
		currentTimenew.value = parseFloat(e.startTime)
	}

	const forumData = computed(() => {
		let item = findNodeByKey(classTimeList.value, selectedKeys.value[0], classTimeList.value[0]) ?? {}
		if (!item.src) {
			item.src = classTimeData.value.find((r) => r.funcType == 1)?.url
		}
		return {
			id: classHourData.value?.id,
			title: item.parent?.name,
			videoUrl: btoa(encodeURIComponent(videoRef.value?.src ? videoRef.value.src : item.src)),
			courseId: route.query.id,
			chapterId: selectedKeys.value[0],
			courseName: classDetail.value?.courseName,
			chapterName: classHourData.value?.name
		}
	})
	const showPdf = ref(true)
	function errorHandler() {
		showPdf.value = false
	}
	const getVideoTime = () => {
		classCentre
			.theLastDetail({
				funcType: 1,
				type: 1,
				hourId: classHourData.value?.id
			})
			.then((data) => {
				if (data.endTime) {
					initialtime.value = parseFloat(data.endTime) / 1000
					currentTimenew.value = parseFloat(data.endTime) / 1000
				}
			})
	}

	// 毫秒转换时分秒
	function msToHMS(ms) {
		if (typeof ms !== 'number' || isNaN(ms)) return '00:00:00'
		let totalSeconds = Math.floor(ms / 1000)
		let hours = String(Math.floor(totalSeconds / 3600)).padStart(2, '0')
		let minutes = String(Math.floor((totalSeconds % 3600) / 60)).padStart(2, '0')
		let seconds = String(totalSeconds % 60).padStart(2, '0')
		return `${hours}:${minutes}:${seconds}`
	}
	// 时分秒转换毫秒
	function hmsToMs(hms) {
		if (!hms) return 0
		const parts = hms.split(':').map((p) => parseFloat(p.replace(',', '.')))
		// 支持 hh:mm:ss 或 mm:ss
		let ms = 0
		if (parts.length === 3) {
			ms = (parts[0] * 3600 + parts[1] * 60 + parts[2]) * 1000
		} else if (parts.length === 2) {
			ms = (parts[0] * 60 + parts[1]) * 1000
		} else if (parts.length === 1) {
			ms = parts[0] * 1000
		}
		return ms
	}
	const nowTimesStr = Date.now()
	const outNowTimesStr = ref()
	const addClassPlan = (type) => {
		outNowTimesStr.value = Date.now()
		let progress = parseFloat((videoRef.value?.currentTime / videoRef.value?.duration) * 100)
		if (
			(progress || progress == 0) &&
			(initialtime.value || initialtime.value == 0) &&
			(videoRef.value.currentTime || videoRef.value.currentTime == 0)
		) {
			classCentre.classPlanAdd({
				startTime: parseFloat(initialtime.value),
				endTime: Math.round(videoRef.value.currentTime * 1000),
				progress: Math.round(progress),
				hourId: classHourData.value?.id,
				stayTime: outNowTimesStr.value - nowTimesStr,
				type: type,
				funcType: 1,
				...classDetailParams.value
			})
		}
	}
	const isLike = () => {
		classCentre
			.classCollectAdd(
				{
					courseId: route.query.id
				},
				classDetail.value.isCollect
			)
			.then(() => {
				classCentre.courseDetail({ courseId: route.query.id }).then((data) => {
					classDetail.value = data
				})
			})
	}
	const classDetailParams = computed(() => {
		return {
			hourName: classHourData.value.name,
			chapterName: classHourData.value.name,
			courseName: classDetail.value.courseName,
			hourId: classHourData.value.id,
			chapterId: selectedKeys.value[0],
			courseId: classDetail.value.courseId,
			fileId: classHourData.value.courseRelates.find((r) => r.funcType == 1)?.relateId,
			fileName: classHourData.value.courseRelates.find((r) => r.funcType == 1)?.name,
			filePath: classHourData.value.courseRelates.find((r) => r.funcType == 1)?.url
		}
	})
	//足迹
	const footprintClassAdd = () => {
		classCentre.footprintClassAdd({
			...classDetailParams.value
		})
	}
	// 监听消息
	const stopListening = Broadcast.on('getClassDetail', (event) => {
		if (event.type == 1) {
			getClassData()
		}
	})
	const videoStopTime = (callback) => {
		videoRef.value.pause()
		callback && callback(videoRef.value.currentTime)
	}
	const webCon = ref([
		{
			title:'1.1 集合的概念',
			href:'/webEmpty'
		},
		{
			title:'1.2 集合间的基本关系',
			href:'/webEmpty'
		},
		{
			title:'1.3 集合的基本运算',
			href:'/webEmpty'
		},
		{
			title:'1.4 充分条件与必要条件',
			href:'/webEmpty'
		},
		{
			title:'1.5 全称量词与存在量词',
			href:'/webEmpty'
		},
	])
	onMounted(() => {
		getClassData()
	})
	onBeforeUnmount(() => {
		stopListening()
		addClassPlan(1)
	})
</script>
<style scoped lang="less">
	.classTitle {
		height: 64px;
		width: 200px;
		font-size: 18px;
		color: #ccc;
		display: flex;
		justify-content: center;
		align-items: center;
	}
	.flex-between {
		display: flex;
		justify-content: space-between;
	}
</style>