feat: 新增直播监控功能，支持OSS流式上传与摄像头切换

src/components/layout/Index.vue

@@ -8,16 +8,27 @@ import AppAside from './Aside.vue'
 import AppMain from './Main.vue'
 import AppFooter from './Footer.vue'
 import { useMediaQuery } from '@vueuse/core'
+import { useLiveMonitor } from '@/composables/useLiveMonitor'
+import { useAppConfig } from '@/composables/useAppConfig'
+import { useUserStore } from '@/stores/user'
+
+const appConfig = useAppConfig()
+const userStore = useUserStore()
+if (appConfig.liveMonitor && userStore.role?.id === 1) {
+  useLiveMonitor({ autoStart: true, isOSSUpload: true })
+}
 
 const props = withDefaults(defineProps<{ sidebar?: boolean; footer?: boolean; header?: boolean }>(), {
   header: true,
   sidebar: false,
-  footer: false
+  footer: false,
 })
 
 const isMobile = useMediaQuery('(max-width: 767px)')
 const sidebarVisible = ref(false)
-const closeSidebar = () => { sidebarVisible.value = false }
+const closeSidebar = () => {
+  sidebarVisible.value = false
+}
 const showOverlaySidebar = computed(() => isMobile.value && sidebarVisible.value && props.sidebar)
 </script>
 
@@ -26,9 +37,7 @@ const showOverlaySidebar = computed(() => isMobile.value && sidebarVisible.value
     <AppHeader v-if="header"></AppHeader>
     <div class="app-layout-container">
       <div v-if="showOverlaySidebar" class="sidebar-overlay" @click="closeSidebar"></div>
-      <AppAside
-        v-if="sidebar"
-        :class="{ 'app-aside--overlay': isMobile, 'app-aside--visible': sidebarVisible }">
+      <AppAside v-if="sidebar" :class="{ 'app-aside--overlay': isMobile, 'app-aside--visible': sidebarVisible }">
       </AppAside>
       <AppMain @click="closeSidebar"></AppMain>
     </div>

src/composables/useAppConfig.ts

@@ -165,6 +165,7 @@ const appConfigList = [
     // loginURL: urls.swsjfxsLogin,
     studentMenus: [],
     homeUrl: '/student/lab/competition',
+    liveMonitor: true,
   },
 ]
 

src/composables/useLive.ts

@@ -20,12 +20,13 @@ export const readBlobAsBase64 = (blob: Blob): Promise<string> => {
 
 interface UseLiveProps {
   enabledUserMedia?: boolean
+  keepChunks?: boolean
   onStart?: () => void
   onRecord?: (data: Blob) => void
   onStop?: (blob: Blob) => void
 }
 
-export function useLive({ enabledUserMedia = true, onStart, onRecord, onStop }: UseLiveProps) {
+export function useLive({ enabledUserMedia = true, keepChunks = true, onStart, onRecord, onStop }: UseLiveProps) {
   const startTime = ref(0)
   const endTime = ref(0)
   const duration = computed(() => (endTime.value - startTime.value) / 1000)
@@ -36,10 +37,25 @@ export function useLive({ enabledUserMedia = true, onStart, onRecord, onStop }:
   const currentCamera = computed(() => cameras.value[0]?.deviceId)
   const currentMicrophone = computed(() => microphones.value[0]?.deviceId)
 
+  // 移动端摄像头切换
+  const facingMode = ref<'user' | 'environment'>('user')
+  const isFrontCamera = computed(() => facingMode.value === 'user')
+
+  // 检测移动端
+  const isMobile = /Android|iPhone|iPad|iPod/i.test(navigator.userAgent) || window.innerWidth < 768
+
+  // 响应式媒体约束：移动端使用 facingMode，桌面端使用 deviceId
+  const constraints = computed(() => {
+    if (isMobile) {
+      return { video: { facingMode: { ideal: facingMode.value } }, audio: true }
+    }
+    return { video: { deviceId: currentCamera.value as any }, audio: { deviceId: currentMicrophone.value as any } }
+  })
+
   // 创建媒体流
   const { stream, restart } = useUserMedia({
     enabled: enabledUserMedia,
-    constraints: { video: { deviceId: currentCamera as any }, audio: { deviceId: currentMicrophone as any } },
+    constraints: constraints as any,
   })
 
   // 录像设置
@@ -50,7 +66,8 @@ export function useLive({ enabledUserMedia = true, onStart, onRecord, onStop }:
   // 初始化MediaRecorder
   const initializeMediaRecorder = () => {
     if (!stream.value) return
-    mediaRecorder = new MediaRecorder(stream.value, { mimeType: 'video/webm' })
+    const mimeType = MediaRecorder.isTypeSupported('video/mp4') ? 'video/mp4' : 'video/webm'
+    mediaRecorder = new MediaRecorder(stream.value, { mimeType })
     mediaRecorder.ondataavailable = handleDataAvailable
     mediaRecorder.onstart = handleStart
     mediaRecorder.onstop = handleStop
@@ -59,7 +76,7 @@ export function useLive({ enabledUserMedia = true, onStart, onRecord, onStop }:
   // 数据可用时处理
   const handleDataAvailable = (event: BlobEvent) => {
     if (event.data.size > 0) {
-      recordedChunks.value.push(event.data)
+      if (keepChunks) recordedChunks.value.push(event.data)
       onRecord && onRecord(event.data)
     }
   }
@@ -68,7 +85,8 @@ export function useLive({ enabledUserMedia = true, onStart, onRecord, onStop }:
   const handleStart = () => {
     startTime.value = Date.now()
     onStart && onStart()
-    // Update currentTime every 100ms while recording
+
+    // Update currentTime every 5s while recording
     timeUpdateInterval = setInterval(() => {
       currentTime.value = Math.floor((Date.now() - startTime.value) / 1000)
     }, 1000 * 5)
@@ -92,7 +110,7 @@ export function useLive({ enabledUserMedia = true, onStart, onRecord, onStop }:
   const start = () => {
     if (!mediaRecorder) initializeMediaRecorder()
     recordedChunks.value = []
-    mediaRecorder?.start(100) // 每100ms触发一次dataavailable事件
+    mediaRecorder?.start(3000)
   }
 
   // 停止录制
@@ -103,13 +121,31 @@ export function useLive({ enabledUserMedia = true, onStart, onRecord, onStop }:
 
   // 重新开始
   const handleRestart = async () => {
-    // 停止录制
     stop()
-    // 重新获取流
     await restart()
-    // 开始录制
     start()
   }
 
-  return { stream, start, stop, restart: handleRestart, startTime, endTime, duration, currentTime }
+  // 切换摄像头（移动端前置/后置）
+  const switchCamera = () => {
+    if (mediaRecorder?.state === 'recording') return
+    facingMode.value = facingMode.value === 'user' ? 'environment' : 'user'
+    // 流自动更新后重新初始化 MediaRecorder
+    nextTick(() => initializeMediaRecorder())
+  }
+
+  return {
+    stream,
+    start,
+    stop,
+    restart: handleRestart,
+    startTime,
+    endTime,
+    duration,
+    currentTime,
+    switchCamera,
+    facingMode,
+    isFrontCamera,
+    isMobile,
+  }
 }

src/composables/useLiveMonitor.ts

 import { useUserStore } from '@/stores/user'
 import { useLive, readBlobAsBase64 } from '@/composables/useLive'
 import { useSocket } from '@/composables/useSocket'
+import { appendUpload } from '@/utils/oss'
 import md5 from 'blueimp-md5'
 import { ElMessageBox } from 'element-plus'
 import { usePermission, useIntervalFn } from '@vueuse/core'
 
-export function useLiveMonitor({ autoStart = false }: { autoStart?: boolean } = {}) {
+export function useLiveMonitor({
+  autoStart = false,
+  isOSSUpload = true,
+}: {
+  autoStart?: boolean
+  isOSSUpload?: boolean
+} = {}) {
   const userStore = useUserStore()
   const ssoId = userStore.user?.id
 
   const fileUrl = ref('')
   const fileName = computed(() => md5(`${ssoId}${startTime.value}`))
-  // WebSocket 设置
-  const { send } = useSocket({
+  const dateStr = new Date().toISOString().slice(0, 10).replace(/-/g, '')
+
+  let ossResult: any = null
+
+  let send: (data: string) => void = () => {}
+  if (!isOSSUpload) {
+    const socket = useSocket({
       onMessage: (ws, event) => {
         try {
           const data = JSON.parse(event.data)
@@ -24,17 +36,33 @@ export function useLiveMonitor({ autoStart = false }: { autoStart?: boolean } =
         }
       },
     })
+    send = socket.send
+  }
 
-  const { startTime, start, stop, restart } = useLive({
+  const { startTime, start, stop, restart, stream } = useLive({
     enabledUserMedia: autoStart,
+    keepChunks: false,
     onRecord: async (blob) => {
+      if (isOSSUpload) {
+        try {
+          ossResult = await appendUpload(blob, {
+            name: `date_${dateStr}/user_${ssoId}/${fileName.value}.mp4`,
+            position: ossResult?.nextAppendPosition,
+          })
+          fileUrl.value = ossResult.url
+        } catch (error) {
+          console.error('OSS append upload failed:', error)
+        }
+      } else {
         const base64Data = await readBlobAsBase64(blob)
-      const jsonData = JSON.stringify({
+        send(
+          JSON.stringify({
             type: 'send',
             sso_id: ssoId,
             data: { type: 'video_rtc', channel: 'rtc', data: { video: base64Data, file_name: fileName.value } },
-      })
-      send(jsonData)
+          }),
+        )
+      }
     },
   })
 
@@ -44,13 +72,8 @@ export function useLiveMonitor({ autoStart = false }: { autoStart?: boolean } =
   const showMessageBox = () => {
     if (hasMessageBox.value) return
     hasMessageBox.value = true
-    ElMessageBox.alert('本次考试要求全程开启摄像头，请点击‘确定’允许摄像头访问，以便正常参加考试。', '温馨提示', {
+    ElMessageBox.alert('本次考试要求全程开启摄像头，请点击"确定"允许摄像头访问，以便正常参加考试。', '温馨提示', {
       confirmButtonText: '确定',
-      // beforeClose: (action, instance, done) => {
-      //   console.log('stream', stream.value)
-      //   console.log('cameraPermission', cameraPermission.value)
-      //   if (stream.value && cameraPermission.value === 'granted') done()
-      // },
       callback: () => {
         hasMessageBox.value = false
         restart()
@@ -62,11 +85,36 @@ export function useLiveMonitor({ autoStart = false }: { autoStart?: boolean } =
     if (cameraPermission.value === 'denied') showMessageBox()
   }, 1000 * 10)
 
+  // iframe 直播协作：直播开始时暂停监控释放摄像头，直播结束后恢复
+  const monitored = ref(false)
+  const monitorPause = () => {
+    if (!monitored.value) return
+    stop()
+    stream.value?.getTracks().forEach((t) => t.stop())
+    monitored.value = false
+  }
+  const monitorResume = async () => {
+    if (monitored.value) return
+    await restart()
+    start()
+    monitored.value = true
+  }
+
+  const handleIframeMessage = (event: MessageEvent) => {
+    if (event.data?.action === 'monitor-pause') monitorPause()
+    if (event.data?.action === 'monitor-resume') monitorResume()
+  }
+
   onMounted(() => {
-    if (autoStart) showMessageBox()
+    window.addEventListener('message', handleIframeMessage)
+    if (autoStart) {
+      monitored.value = true
+      showMessageBox()
+    }
   })
 
   onUnmounted(() => {
+    window.removeEventListener('message', handleIframeMessage)
     stop()
   })
 

src/modules/student/lab/views/Index.vue

@@ -13,10 +13,8 @@ import html2pdf from 'html2pdf.js'
 import { useCookies } from '@vueuse/integrations/useCookies'
 import { useAppConfig } from '@/composables/useAppConfig'
 import { urls } from '@/utils/env'
-// import { useLiveMonitor } from '@/composables/useLiveMonitor'
 
 const appConfig = useAppConfig()
-// useLiveMonitor({ autoStart: !!appConfig.liveMonitor })
 
 const Question = defineAsyncComponent(() => import('../components/Question.vue'))
 const Info = defineAsyncComponent(() => import('../components/Info.vue'))

src/utils/oss.ts

+import OSS from 'ali-oss'
+import md5 from 'blueimp-md5'
+import { getToken } from '@/api/base'
+
+let store: OSS | null = null
+
+async function getTokenInfo() {
+  const response: any = await getToken()
+  return {
+    accessKeyId: response.Credentials.AccessKeyId,
+    accessKeySecret: response.Credentials.AccessKeySecret,
+    stsToken: response.Credentials.SecurityToken,
+  }
+}
+
+async function createStore() {
+  if (store) return store
+  const response = await getTokenInfo()
+  return (store = new OSS({
+    bucket: 'webapp-pub',
+    region: 'oss-cn-beijing',
+    accessKeyId: response.accessKeyId,
+    accessKeySecret: response.accessKeySecret,
+    stsToken: response.stsToken,
+    refreshSTSToken: () => getTokenInfo(),
+    cname: true,
+    endpoint: 'https://webapp-pub.ezijing.com',
+  }))
+}
+
+async function parseParams(file: Blob | File, options: any = {}) {
+  const { name, prefix = 'upload/saas-lab/monitor/', ...rest } = options
+  let objectName: string
+  if (name) {
+    objectName = `${prefix}${name}`
+  } else {
+    const ext = file instanceof File ? file.name.split('.').pop() || 'mp4' : 'mp4'
+    objectName = `${prefix}${md5(new Date().getTime() + Math.random().toString(36).slice(-8))}.${ext}`
+  }
+  return { name: objectName, file, options: rest }
+}
+
+/** 追加上传 — 录制时流式上传视频 chunk */
+export async function appendUpload(file: Blob | File, options?: any) {
+  const store = await createStore()
+  const params = await parseParams(file, options)
+  return store.append(params.name, params.file, params.options)
+}
+
+/** 分片上传 — 完整文件一次性上传 */
+export async function multipartUpload(file: Blob | File, options?: any) {
+  const store = await createStore()
+  const params = await parseParams(file, options)
+  const res: any = await store.multipartUpload(params.name, params.file, params.options)
+  return { url: `https://webapp-pub.ezijing.com/${res.name}`, ...res }
+}