704 lines
22 KiB
JavaScript
704 lines
22 KiB
JavaScript
/**
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* ==========================================
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* 1. 类型定义 (Type Definitions)
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* 后端可参考此部分设计数据库模型和 API 响应格式
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* ==========================================
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*/
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/**
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* @typedef {Object} CallSession
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* @property {string} id - 通话唯一标识 (UUID)
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* @property {'video'|'audio'} type - 通话类型
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* @property {'connecting'|'ongoing'|'ended'|'failed'} status - 通话状态
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* @property {string} startTime - ISO 8601 时间戳
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* @property {number} duration - 已进行秒数
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* @property {boolean} isEncrypted - 是否启用端到端加密
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* @property {LocalUser} localUser - 本地用户信息
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* @property {RemoteUser} remoteUser - 远端用户信息
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*/
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/**
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* @typedef {Object} LocalUser
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* @property {string} id - 用户ID
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* @property {string} name - 显示名称
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* @property {string} avatar - 头像URL
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* @property {boolean} isHost - 是否主持人
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* @property {MediaState} mediaState - 媒体状态
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*/
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/**
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* @typedef {Object} RemoteUser
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* @property {string} id - 用户ID
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* @property {string} name - 显示名称
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* @property {string} avatar - 头像URL
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* @property {'online'|'offline'|'connecting'} status - 在线状态
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* @property {MediaState} mediaState - 媒体状态
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* @property {'excellent'|'good'|'fair'|'poor'} networkQuality - 网络质量
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*/
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/**
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* @typedef {Object} MediaState
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* @property {boolean} audio - 音频是否开启
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* @property {boolean} video - 视频是否开启
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* @property {boolean} screenShare - 是否屏幕共享
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* @property {boolean} isSpeaking - 是否正在说话(VAD)
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*/
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/**
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* @typedef {Object} ChatMessage
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* @property {string} id - 消息唯一ID
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* @property {string} senderId - 发送者ID
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* @property {string} senderName - 发送者名称
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* @property {string} senderAvatar - 发送者头像URL
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* @property {string} content - 消息内容
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* @property {'text'|'file'|'system'} type - 消息类型
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* @property {string} timestamp - ISO 8601 时间戳
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* @property {boolean} isSelf - 是否为自己发送
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*/
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/**
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* ==========================================
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* 2. 模拟数据层 (Mock Data Layer)
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* 后端接口返回的数据格式应与此结构一致
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* ==========================================
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*/
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// [API_RESPONSE: GET /api/call/:callId]
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const mockCallSession = {
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id: "call-8842-2024-001",
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type: "video",
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status: "ongoing", // connecting | ongoing | ended | failed
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startTime: "2024-01-15T14:30:00.000Z",
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duration: 0, // 秒数，后端可不返回，前端本地计算
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isEncrypted: true,
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// [API_RESPONSE: 嵌套用户信息]
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localUser: {
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id: "user-local-001",
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name: "我",
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avatar: "https://images.unsplash.com/photo-1507003211169-0a1dd7228f2d?w=400&h=400&fit=crop",
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isHost: true,
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mediaState: {
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audio: true,
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video: true,
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screenShare: false,
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isSpeaking: false
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}
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},
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remoteUser: {
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id: "user-remote-002",
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name: "Sarah Chen",
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avatar: "https://images.unsplash.com/photo-1494790108377-be9c29b29330?w=400&h=400&fit=crop",
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status: "online", // online | offline | connecting
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networkQuality: "excellent", // excellent | good | fair | poor
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mediaState: {
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audio: true,
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video: true,
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screenShare: false,
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isSpeaking: false
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}
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}
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};
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// [API_RESPONSE: GET /api/call/:callId/messages]
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const mockMessages = [
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{
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id: "msg-001",
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senderId: "system",
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senderName: "系统",
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senderAvatar: "/assets/system.png",
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content: "通话已建立连接",
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type: "system",
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timestamp: "2024-01-15T14:30:00.000Z",
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isSelf: false
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},
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{
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id: "msg-002",
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senderId: "user-remote-002",
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senderName: "Sarah Chen",
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senderAvatar: "https://images.unsplash.com/photo-1494790108377-be9c29b29330?w=100&h=100&fit=crop",
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content: "嗨，能听到我说话吗？",
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type: "text",
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timestamp: "2024-01-15T14:32:15.000Z",
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isSelf: false
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},
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{
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id: "msg-003",
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senderId: "user-local-001",
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senderName: "我",
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senderAvatar: "https://images.unsplash.com/photo-1507003211169-0a1dd7228f2d?w=100&h=100&fit=crop",
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content: "很清楚！你的画面也很清晰 👍",
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type: "text",
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timestamp: "2024-01-15T14:32:45.000Z",
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isSelf: true
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}
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];
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/**
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* ==========================================
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* 3. 状态管理 (State Management)
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* 使用简单的 Observable 模式，可替换为 Redux/Vuex/Pinia
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* ==========================================
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*/
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class CallStateManager {
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constructor() {
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// 核心状态
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this.state = {
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session: { ...mockCallSession },
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messages: [...mockMessages],
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isSidebarOpen: false,
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unreadCount: 0,
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localStream: null, // MediaStream 对象
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remoteStream: null // MediaStream 对象
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};
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// 监听器数组
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this.listeners = [];
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// 初始化
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this.init();
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}
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// 订阅状态变化
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subscribe(callback) {
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this.listeners.push(callback);
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return () => {
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this.listeners = this.listeners.filter(cb => cb !== callback);
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};
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}
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// 通知所有监听器
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notify(changes) {
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this.listeners.forEach(cb => cb(this.state, changes));
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}
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// 初始化
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init() {
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// 启动通话时长计时器
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this.durationInterval = setInterval(() => {
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this.state.session.duration++;
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this.notify({ type: 'DURATION_UPDATE', duration: this.state.session.duration });
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}, 1000);
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// 模拟远端音频活动 (实际应由 WebRTC VAD 检测触发)
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this.simulateRemoteActivity();
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}
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// 更新本地媒体状态
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updateLocalMedia(mediaType, value) {
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this.state.session.localUser.mediaState[mediaType] = value;
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this.notify({ type: 'LOCAL_MEDIA_CHANGE', mediaType, value });
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// [API_CALL: POST /api/call/:callId/media]
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// [WEBSOCKET_EMIT: media-state-changed]
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this.emitMediaStateChange();
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}
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// 更新远端媒体状态 (由 WebSocket 消息触发)
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updateRemoteMedia(mediaState) {
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this.state.session.remoteUser.mediaState = {
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...this.state.session.remoteUser.mediaState,
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...mediaState
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};
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this.notify({ type: 'REMOTE_MEDIA_CHANGE', mediaState });
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}
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// 添加消息
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addMessage(message) {
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this.state.messages.push(message);
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// 如果侧边栏关闭且不是自己发的，增加未读
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if (!this.state.isSidebarOpen && !message.isSelf) {
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this.state.unreadCount++;
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}
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this.notify({ type: 'NEW_MESSAGE', message, unreadCount: this.state.unreadCount });
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}
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// 切换侧边栏
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toggleSidebar() {
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this.state.isSidebarOpen = !this.state.isSidebarOpen;
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if (this.state.isSidebarOpen) {
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this.state.unreadCount = 0;
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}
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this.notify({ type: 'SIDEBAR_TOGGLE', isOpen: this.state.isSidebarOpen });
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}
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// 结束通话
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endCall() {
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clearInterval(this.durationInterval);
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this.state.session.status = 'ended';
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this.notify({ type: 'CALL_ENDED' });
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// [API_CALL: POST /api/call/:callId/leave]
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// [WEBSOCKET_EMIT: leave-call]
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}
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// 模拟远端活动 (开发测试用)
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simulateRemoteActivity() {
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setInterval(() => {
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if (Math.random() > 0.7) {
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const isSpeaking = Math.random() > 0.5;
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this.updateRemoteMedia({ isSpeaking });
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}
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}, 800);
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}
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// 模拟网络质量变化 (开发测试用)
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simulateNetworkChange() {
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const qualities = ['excellent', 'good', 'fair', 'poor'];
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setInterval(() => {
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if (Math.random() > 0.8) {
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const quality = qualities[Math.floor(Math.random() * qualities.length)];
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this.state.session.remoteUser.networkQuality = quality;
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this.notify({ type: 'NETWORK_CHANGE', quality });
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}
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}, 5000);
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}
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// 发送媒体状态到服务器
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emitMediaStateChange() {
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const payload = {
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userId: this.state.session.localUser.id,
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...this.state.session.localUser.mediaState
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};
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console.log('[WebSocket Emit] media-state-changed:', payload);
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// socket.emit('media-state-changed', payload);
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}
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// Getters
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getState() { return this.state; }
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getLocalUser() { return this.state.session.localUser; }
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getRemoteUser() { return this.state.session.remoteUser; }
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getMessages() { return this.state.messages; }
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}
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/**
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* ==========================================
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* 4. UI 渲染器 (UI Renderer)
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* 负责将状态映射到 DOM，与状态管理解耦
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* ==========================================
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*/
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class UIRenderer {
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constructor(stateManager) {
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this.stateManager = stateManager;
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this.unsubscribe = stateManager.subscribe(this.render.bind(this));
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// 缓存 DOM 元素
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this.elements = {
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// 头部
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headerTitle: document.getElementById('headerTitle'),
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callDuration: document.getElementById('callDuration'),
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encryptionBadge: document.getElementById('encryptionBadge'),
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unreadBadge: document.getElementById('unreadBadge'),
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// 远端视频
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remoteVideo: document.getElementById('remoteVideo'),
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remoteAvatar: document.getElementById('remoteAvatar'),
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remoteName: document.getElementById('remoteName'),
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remoteStatus: document.getElementById('remoteStatus'),
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remoteSpeakingIndicator: document.getElementById('remoteSpeakingIndicator'),
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remoteAudioWave: document.getElementById('remoteAudioWave'),
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networkStatus: document.getElementById('networkStatus'),
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networkStatusText: document.getElementById('networkStatusText'),
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connectingOverlay: document.getElementById('connectingOverlay'),
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// 本地视频
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localVideo: document.getElementById('localVideo'),
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localVideoPlaceholder: document.getElementById('localVideoPlaceholder'),
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localAudioWave: document.getElementById('localAudioWave'),
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localInitials: document.getElementById('localInitials'),
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// 侧边栏
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sidebar: document.getElementById('sidebar'),
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chatContent: document.getElementById('chatContent'),
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userList: document.getElementById('userList'),
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// 控制按钮
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micBtn: document.getElementById('micBtn'),
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videoBtn: document.getElementById('videoBtn'),
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screenBtn: document.getElementById('screenBtn'),
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connectionQuality: document.getElementById('connectionQuality')
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};
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}
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// 主渲染入口
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render(state, changes) {
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if (!changes) {
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// 初始化全量渲染
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this.renderHeader(state);
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this.renderRemoteVideo(state);
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this.renderLocalVideo(state);
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this.renderUserList(state);
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this.renderMessages(state);
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this.renderControls(state);
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return;
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}
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// 增量更新
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switch (changes.type) {
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case 'DURATION_UPDATE':
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this.updateDuration(changes.duration);
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break;
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case 'LOCAL_MEDIA_CHANGE':
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this.updateLocalControl(changes.mediaType, changes.value);
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this.updateLocalVideoUI(state);
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break;
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case 'REMOTE_MEDIA_CHANGE':
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this.updateRemoteVideoUI(state);
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break;
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case 'NEW_MESSAGE':
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this.appendMessage(changes.message);
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this.updateUnreadBadge(changes.unreadCount);
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break;
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case 'SIDEBAR_TOGGLE':
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this.toggleSidebarUI(changes.isOpen);
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break;
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case 'NETWORK_CHANGE':
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this.updateNetworkStatus(changes.quality);
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break;
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case 'CALL_ENDED':
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this.showCallEnded(state.session.duration);
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break;
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}
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}
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// 渲染头部信息
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renderHeader(state) {
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const { session } = state;
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this.elements.headerTitle.textContent = `与 ${session.remoteUser.name} 的通话`;
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this.elements.encryptionBadge.style.display = session.isEncrypted ? 'flex' : 'none';
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this.updateDuration(session.duration);
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}
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updateDuration(seconds) {
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const mins = Math.floor(seconds / 60);
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const secs = seconds % 60;
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this.elements.callDuration.textContent =
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`${String(mins).padStart(2, '0')}:${String(secs).padStart(2, '0')}`;
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}
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// 渲染远端视频区域
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renderRemoteVideo(state) {
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const { remoteUser } = state.session;
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this.elements.remoteName.textContent = remoteUser.name;
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this.elements.remoteAvatar.src = remoteUser.avatar;
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this.elements.remoteVideo.src = remoteUser.avatar; // 实际应为视频流
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this.updateRemoteVideoUI(state);
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this.updateNetworkStatus(remoteUser.networkQuality);
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}
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updateRemoteVideoUI(state) {
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const { remoteUser } = state.session;
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const media = remoteUser.mediaState;
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// 音频状态
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if (media.isSpeaking && media.audio) {
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this.elements.remoteAudioWave.classList.remove('hidden');
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this.elements.remoteSpeakingIndicator.classList.remove('hidden');
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} else {
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this.elements.remoteAudioWave.classList.add('hidden');
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this.elements.remoteSpeakingIndicator.classList.add('hidden');
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}
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// 连接状态
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const statusText = {
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'online': '正在通话',
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'connecting': '连接中...',
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'offline': '已断开'
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};
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this.elements.remoteStatus.textContent = statusText[remoteUser.status];
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// 视频占位 (实际应根据 video track 判断)
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if (!media.video) {
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this.elements.remoteVideo.style.opacity = '0.3';
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} else {
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this.elements.remoteVideo.style.opacity = '1';
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}
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}
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// 渲染本地视频
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renderLocalVideo(state) {
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const { localUser } = state.session;
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this.elements.localVideo.src = localUser.avatar; // 实际应为视频流
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this.elements.localInitials.textContent = localUser.name.substring(0, 2);
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this.updateLocalVideoUI(state);
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}
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updateLocalVideoUI(state) {
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const { localUser } = state.session;
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const media = localUser.mediaState;
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// 视频开关
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if (!media.video) {
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this.elements.localVideoPlaceholder.classList.remove('hidden');
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this.elements.localVideo.style.opacity = '0';
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} else {
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this.elements.localVideoPlaceholder.classList.add('hidden');
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this.elements.localVideo.style.opacity = '1';
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}
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// 音频波形
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if (media.isSpeaking && media.audio) {
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this.elements.localAudioWave.classList.remove('hidden');
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} else {
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this.elements.localAudioWave.classList.add('hidden');
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}
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}
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// 渲染用户列表
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renderUserList(state) {
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// 实际项目中应根据用户列表动态生成
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// 这里使用静态HTML，仅更新状态
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}
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// 渲染消息列表
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renderMessages(state) {
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// 实际项目中应根据消息列表动态生成
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// 这里使用静态HTML，仅更新新消息
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}
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// 追加新消息
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appendMessage(message) {
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// 实际项目中应动态生成消息元素
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console.log('New message:', message);
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}
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// 渲染控制按钮
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renderControls(state) {
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const { localUser } = state.session;
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const media = localUser.mediaState;
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this.updateLocalControl('audio', media.audio);
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this.updateLocalControl('video', media.video);
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this.updateLocalControl('screenShare', media.screenShare);
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}
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// 更新本地控制按钮状态
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updateLocalControl(mediaType, value) {
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const btnMap = {
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'audio': this.elements.micBtn,
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'video': this.elements.videoBtn,
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'screenShare': this.elements.screenBtn
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};
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const btn = btnMap[mediaType];
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if (btn) {
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btn.dataset.active = !value;
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btn.querySelector('[data-icon="default"]').classList.toggle('hidden', !value);
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btn.querySelector('[data-icon="active"]').classList.toggle('hidden', value);
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}
|
||
}
|
||
|
||
// 更新未读消息徽章
|
||
updateUnreadBadge(count) {
|
||
if (count > 0) {
|
||
this.elements.unreadBadge.textContent = count;
|
||
this.elements.unreadBadge.classList.remove('hidden');
|
||
} else {
|
||
this.elements.unreadBadge.classList.add('hidden');
|
||
}
|
||
}
|
||
|
||
// 切换侧边栏UI
|
||
toggleSidebarUI(isOpen) {
|
||
this.elements.sidebar.classList.toggle('hidden', !isOpen);
|
||
}
|
||
|
||
// 更新网络状态
|
||
updateNetworkStatus(quality) {
|
||
const qualityText = {
|
||
'excellent': '优秀',
|
||
'good': '良好',
|
||
'fair': '一般',
|
||
'poor': '较差'
|
||
};
|
||
|
||
if (quality !== 'excellent') {
|
||
this.elements.networkStatus.classList.remove('hidden');
|
||
this.elements.networkStatusText.textContent = `网络${qualityText[quality]}`;
|
||
} else {
|
||
this.elements.networkStatus.classList.add('hidden');
|
||
}
|
||
|
||
this.elements.connectionQuality.textContent = `连接质量: ${qualityText[quality]}`;
|
||
}
|
||
|
||
// 显示通话结束
|
||
showCallEnded(duration) {
|
||
const mins = Math.floor(duration / 60);
|
||
const secs = duration % 60;
|
||
alert(`通话已结束，时长: ${mins}分${secs}秒`);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* ==========================================
|
||
* 5. 事件处理 (Event Handlers)
|
||
* 处理用户交互事件
|
||
* ==========================================
|
||
*/
|
||
|
||
// 全局状态管理器实例
|
||
let stateManager;
|
||
let uiRenderer;
|
||
|
||
// 初始化应用
|
||
function initApp() {
|
||
stateManager = new CallStateManager();
|
||
uiRenderer = new UIRenderer(stateManager);
|
||
|
||
// 绑定键盘事件
|
||
document.addEventListener('keydown', handleKeyPress);
|
||
}
|
||
|
||
// 处理键盘事件
|
||
function handleKeyPress(e) {
|
||
// 空格键静音
|
||
if (e.code === 'Space') {
|
||
e.preventDefault();
|
||
const micBtn = document.getElementById('micBtn');
|
||
toggleMute(micBtn);
|
||
}
|
||
|
||
// Ctrl+V 切换视频
|
||
if (e.ctrlKey && e.key === 'v') {
|
||
e.preventDefault();
|
||
const videoBtn = document.getElementById('videoBtn');
|
||
toggleVideo(videoBtn);
|
||
}
|
||
}
|
||
|
||
// 切换静音
|
||
function toggleMute(btn) {
|
||
const isActive = btn.dataset.active === 'true';
|
||
stateManager.updateLocalMedia('audio', !isActive);
|
||
}
|
||
|
||
// 切换视频
|
||
function toggleVideo(btn) {
|
||
const isActive = btn.dataset.active === 'true';
|
||
stateManager.updateLocalMedia('video', !isActive);
|
||
}
|
||
|
||
// 切换屏幕共享
|
||
function toggleScreenShare(btn) {
|
||
const isActive = btn.dataset.active === 'true';
|
||
stateManager.updateLocalMedia('screenShare', !isActive);
|
||
}
|
||
|
||
// 切换本地视频
|
||
function toggleLocalVideo() {
|
||
const videoBtn = document.getElementById('videoBtn');
|
||
toggleVideo(videoBtn);
|
||
}
|
||
|
||
// 切换侧边栏
|
||
function toggleSidebar() {
|
||
stateManager.toggleSidebar();
|
||
}
|
||
|
||
// 结束通话
|
||
function endCall() {
|
||
stateManager.endCall();
|
||
}
|
||
|
||
// 发送消息
|
||
function sendMessage() {
|
||
const input = document.getElementById('chatInput');
|
||
const content = input.value.trim();
|
||
|
||
if (content) {
|
||
const newMessage = {
|
||
id: `msg-${Date.now()}`,
|
||
senderId: stateManager.getLocalUser().id,
|
||
senderName: stateManager.getLocalUser().name,
|
||
senderAvatar: stateManager.getLocalUser().avatar,
|
||
content: content,
|
||
type: 'text',
|
||
timestamp: new Date().toISOString(),
|
||
isSelf: true
|
||
};
|
||
|
||
stateManager.addMessage(newMessage);
|
||
input.value = '';
|
||
|
||
// [API_CALL: POST /api/call/:callId/message]
|
||
// [WEBSOCKET_EMIT: send-message]
|
||
console.log('[WebSocket Emit] send-message:', newMessage);
|
||
}
|
||
}
|
||
|
||
// 处理聊天输入提交
|
||
function handleChatSubmit(e) {
|
||
if (e.key === 'Enter') {
|
||
sendMessage();
|
||
}
|
||
}
|
||
|
||
// 本地视频窗口拖拽功能
|
||
document.addEventListener('DOMContentLoaded', function() {
|
||
const videoContainer = document.getElementById('localVideoContainer');
|
||
let isDragging = false;
|
||
let offsetX, offsetY;
|
||
const edgeThreshold = 20; // 边缘吸附阈值
|
||
|
||
videoContainer.addEventListener('mousedown', function(e) {
|
||
// 只有在点击容器本身而不是内部按钮时才开始拖拽
|
||
if (e.target === videoContainer || e.target === videoContainer.querySelector('#localVideo') || e.target === videoContainer.querySelector('#localVideoPlaceholder')) {
|
||
isDragging = true;
|
||
offsetX = e.clientX - videoContainer.getBoundingClientRect().left;
|
||
offsetY = e.clientY - videoContainer.getBoundingClientRect().top;
|
||
videoContainer.style.cursor = 'grabbing';
|
||
videoContainer.style.zIndex = '100';
|
||
}
|
||
});
|
||
|
||
document.addEventListener('mousemove', function(e) {
|
||
if (!isDragging) return;
|
||
|
||
let newX = e.clientX - offsetX;
|
||
let newY = e.clientY - offsetY;
|
||
|
||
// 计算屏幕边界
|
||
const windowWidth = window.innerWidth;
|
||
const windowHeight = window.innerHeight;
|
||
const containerWidth = videoContainer.offsetWidth;
|
||
const containerHeight = videoContainer.offsetHeight;
|
||
|
||
// 边缘吸附逻辑
|
||
if (newX < edgeThreshold) {
|
||
newX = 0;
|
||
} else if (newX > windowWidth - containerWidth - edgeThreshold) {
|
||
newX = windowWidth - containerWidth;
|
||
}
|
||
|
||
if (newY < edgeThreshold) {
|
||
newY = 0;
|
||
} else if (newY > windowHeight - containerHeight - edgeThreshold) {
|
||
newY = windowHeight - containerHeight;
|
||
}
|
||
|
||
// 更新位置
|
||
videoContainer.style.left = newX + 'px';
|
||
videoContainer.style.top = newY + 'px';
|
||
videoContainer.style.bottom = 'auto';
|
||
videoContainer.style.right = 'auto';
|
||
});
|
||
|
||
document.addEventListener('mouseup', function() {
|
||
if (isDragging) {
|
||
isDragging = false;
|
||
videoContainer.style.cursor = 'move';
|
||
videoContainer.style.zIndex = '10';
|
||
}
|
||
});
|
||
});
|
||
|
||
// 页面加载完成后初始化
|
||
window.addEventListener('DOMContentLoaded', initApp);
|