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CamTalk/frontend/src/App.tsx

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// ============================================================
// CamTalk — 主应用组件Web 端三栏布局:侧边栏 + 视频 + 聊天)
// ============================================================
import { useCallback, useEffect, useMemo, useRef, useState } from "react";
import { useVisionSession } from "./hooks/useVisionSession";
import { useSessionList } from "./hooks/useSessionList";
import { VideoPreview } from "./components/VideoPreview";
import { ChatPanel } from "./components/ChatPanel";
import { ConfigPanel } from "./components/ConfigPanel";
import { SessionSidebar } from "./components/SessionSidebar";
import { ToastContainer } from "./components/Toast";
import { loadConfig, loadTheme, saveTheme } from "./lib/storage";
import { I18nContext, parseLocale, t } from "./lib/i18n";
import type { Locale } from "./lib/i18n";
import type { Theme } from "./types";
import "./App.css";
/** 内部组件,确保在 I18nContext.Provider 内部使用 hooks */
function AppContent() {
const [showConfig, setShowConfig] = useState(false);
const [theme, setTheme] = useState<Theme>(loadTheme);
const [elapsed, setElapsed] = useState(0);
const [sidebarCollapsed, setSidebarCollapsed] = useState(false);
const timerRef = useRef<ReturnType<typeof setInterval> | null>(null);
// 切换主题时更新 <html> 的 data-theme 属性
useEffect(() => {
document.documentElement.setAttribute("data-theme", theme);
}, [theme]);
const handleThemeChange = useCallback((t: Theme) => {
setTheme(t);
saveTheme(t);
}, []);
const formatTime = (s: number) => {
const m = Math.floor(s / 60);
const sec = s % 60;
return `${m.toString().padStart(2, "0")}:${sec.toString().padStart(2, "0")}`;
};
// ---- 会话列表 ----
const {
sessions,
activeSessionId,
createSession,
deleteSession,
renameSession,
persistSession,
selectSession,
} = useSessionList();
// ---- 视觉会话 ----
const {
messages,
setMessages,
currentReply,
isProcessing,
isAudioPlaying,
isSpeaking,
isVADReady,
vadError,
connectionStatus,
videoRef,
stream,
config,
updateConfig,
stats,
mode,
isObserving,
startSession,
stopSession,
interrupt,
isCameraOn,
isMicOn,
toggleCamera,
toggleMic,
sendTextMessage,
} = useVisionSession();
const isConnected = connectionStatus === "connected";
// 连接计时器
const elapsedRef = useRef(0);
useEffect(() => {
if (isConnected) {
elapsedRef.current = 0;
setElapsed(0); // eslint-disable-line react-hooks/set-state-in-effect -- 连接时重置计时器
}
}, [isConnected]);
useEffect(() => {
if (!isConnected) {
if (timerRef.current) {
clearInterval(timerRef.current);
timerRef.current = null;
}
return;
}
const id = setInterval(() => {
elapsedRef.current += 1;
setElapsed(elapsedRef.current);
}, 1000);
timerRef.current = id;
return () => clearInterval(id);
}, [isConnected]);
const { t: tr } = useMemo(() => ({ t: (key: string) => t(key, parseLocale(config.language)) }), [config.language]);
// ---- 初始化:如果没有会话,创建一个 ----
const initializedRef = useRef(false);
useEffect(() => {
if (!initializedRef.current) {
initializedRef.current = true;
if (sessions.length === 0) {
createSession();
}
}
}, [sessions.length, createSession]);
// ---- 自动保存messages 变化时持久化到当前会话 ----
const messagesRef = useRef(messages);
useEffect(() => { messagesRef.current = messages; }, [messages]);
useEffect(() => {
if (activeSessionId && messages.length > 0) {
persistSession(activeSessionId, messages);
}
}, [messages, activeSessionId, persistSession]);
// ---- 侧边栏操作 ----
const handleNewSession = useCallback(() => {
createSession();
setMessages([]);
// 如果已连接,断开
if (connectionStatus === "connected") {
stopSession();
}
}, [createSession, setMessages, connectionStatus, stopSession]);
const handleSelectSession = useCallback((id: string) => {
// 保存当前会话
if (activeSessionId && messagesRef.current.length > 0) {
persistSession(activeSessionId, messagesRef.current);
}
// 如果已连接,断开
if (connectionStatus === "connected") {
stopSession();
}
// 加载目标会话
const loaded = selectSession(id);
setMessages(loaded);
}, [activeSessionId, persistSession, connectionStatus, stopSession, selectSession, setMessages]);
const handleDeleteSession = useCallback((id: string) => {
deleteSession(id);
if (id === activeSessionId) {
setMessages([]);
}
}, [deleteSession, activeSessionId, setMessages]);
return (
<div className="app">
{/* ---- 顶部导航栏 ---- */}
<header className="header">
<div className="header__left">
<h1 className="header__title">CamTalk</h1>
<span className="header__subtitle">{tr("app.title")}</span>
</div>
<div className="header__right">
{isConnected && stats.queryCount > 0 && (
<span className="header__stats">
{stats.queryCount} {tr("app.stats.requests")}
</span>
)}
<span className={`badge badge--${connectionStatus}`}>
{isConnected ? tr("status.connected") : connectionStatus === "connecting" ? tr("status.connecting") : tr("status.disconnected")}
</span>
<button
className="btn-icon"
onClick={() => setShowConfig((v) => !v)}
title={tr("settings.title")}
aria-label={tr("settings.title")}
>
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<svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.8" strokeLinecap="round" strokeLinejoin="round">
<circle cx="12" cy="12" r="3" />
<path d="M19.4 15a1.65 1.65 0 0 0 .33 1.82l.06.06a2 2 0 0 1-2.83 2.83l-.06-.06a1.65 1.65 0 0 0-1.82-.33 1.65 1.65 0 0 0-1 1.51V21a2 2 0 0 1-4 0v-.09A1.65 1.65 0 0 0 9 19.4a1.65 1.65 0 0 0-1.82.33l-.06.06a2 2 0 0 1-2.83-2.83l.06-.06A1.65 1.65 0 0 0 4.68 15a1.65 1.65 0 0 0-1.51-1H3a2 2 0 0 1 0-4h.09A1.65 1.65 0 0 0 4.6 9a1.65 1.65 0 0 0-.33-1.82l-.06-.06a2 2 0 0 1 2.83-2.83l.06.06A1.65 1.65 0 0 0 9 4.68a1.65 1.65 0 0 0 1-1.51V3a2 2 0 0 1 4 0v.09a1.65 1.65 0 0 0 1 1.51 1.65 1.65 0 0 0 1.82-.33l.06-.06a2 2 0 0 1 2.83 2.83l-.06.06A1.65 1.65 0 0 0 19.4 9a1.65 1.65 0 0 0 1.51 1H21a2 2 0 0 1 0 4h-.09a1.65 1.65 0 0 0-1.51 1z" />
</svg>
</button>
</div>
</header>
{showConfig && (
<ConfigPanel
config={config}
theme={theme}
onUpdate={updateConfig}
onThemeChange={handleThemeChange}
onClose={() => setShowConfig(false)}
/>
)}
{/* ---- 主体:侧边栏 + 视频 + 聊天 ---- */}
<div className="workspace">
{/* 最左侧:会话历史侧边栏 */}
<SessionSidebar
sessions={sessions}
activeSessionId={activeSessionId}
collapsed={sidebarCollapsed}
onToggleCollapse={() => setSidebarCollapsed((v) => !v)}
onNewSession={handleNewSession}
onSelectSession={handleSelectSession}
onDeleteSession={handleDeleteSession}
onRenameSession={renameSession}
/>
{/* 中间:视频预览 + 控制栏 */}
<div className="video-panel">
<div className="video-container">
<VideoPreview ref={videoRef} isStreaming={!!stream} />
{isConnected && (
<div className="live-badge">
<span className="live-badge__dot" />
LIVE {formatTime(elapsed)}
</div>
)}
{config.detailLevel === "high" && (
<div className="detail-badge">HD</div>
)}
{isObserving && (
<div className="observation-badge">{tr("video.observing")}</div>
)}
{isSpeaking && (
<div className="video-indicator">{tr("video.listening")}</div>
)}
{isAudioPlaying && config.ttsEnabled && (
<div className="video-indicator video-indicator--audio">{tr("video.playing")}</div>
)}
{isConnected && !isVADReady && !vadError && (
<div className="video-indicator video-indicator--loading">{tr("video.initVad")}</div>
)}
{vadError && (
<div className="video-indicator video-indicator--error"> {vadError}</div>
)}
{isProcessing && (
<div className="video-overlay">
<div className="video-overlay__spinner" />
</div>
)}
{!isConnected && !stream && (
<div className="video-placeholder">
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<svg className="video-placeholder__icon" width="48" height="48" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.2" strokeLinecap="round" strokeLinejoin="round">
<path d="M23 19a2 2 0 0 1-2 2H3a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h4l2-3h6l2 3h4a2 2 0 0 1 2 2z" />
<circle cx="12" cy="13" r="4" />
</svg>
<span>{tr("video.placeholder")}</span>
</div>
)}
{isConnected && !isCameraOn && (
<div className="video-placeholder">
<svg className="video-placeholder__icon" width="48" height="48" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.2" strokeLinecap="round" strokeLinejoin="round">
<path d="M23 19a2 2 0 0 1-2 2H3a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h4l2-3h6l2 3h4a2 2 0 0 1 2 2z" />
<circle cx="12" cy="13" r="4" />
</svg>
<span>{tr("video.cameraOff")}</span>
<span className="video-placeholder__hint">{tr("video.cameraOff.hint")}</span>
</div>
)}
</div>
{/* 视频下方控制栏 */}
<div className="video-controls">
{!isConnected ? (
<button className="btn btn--primary btn--lg" onClick={startSession}>
{connectionStatus === "connecting" ? tr("controls.connecting") : tr("controls.startVideo")}
</button>
) : (
<div className="video-controls__row">
<button
className={`btn btn--ctrl ${isCameraOn ? "btn--ctrl-on" : "btn--ctrl-off"}`}
onClick={toggleCamera}
title={isCameraOn ? tr("controls.cameraOff") : tr("controls.cameraOn")}
>
📷
</button>
<button
className={`btn btn--ctrl ${isMicOn ? "btn--ctrl-on" : "btn--ctrl-off"} ${isSpeaking ? "btn--speaking" : ""}`}
onClick={toggleMic}
title={isMicOn ? tr("controls.micOff") : tr("controls.micOn")}
>
🎤
</button>
{isProcessing && (
<button className="btn btn--warning" onClick={interrupt}>
{tr("controls.interrupt")}
</button>
)}
<button className="btn btn--danger" onClick={stopSession}>
{tr("controls.stop")}
</button>
</div>
)}
</div>
</div>
{/* 右侧:聊天面板 */}
<div className="chat-panel-wrapper">
<div className="chat-panel-header">
<span>{tr("chat.title")}</span>
{isConnected && mode === "observation" && (
<span className="chat-panel-header__mode">{tr("chat.mode.observation")}</span>
)}
</div>
<div className="chat-panel-body">
{connectionStatus === "disconnected" && messages.length > 0 && (
<div className="system-message system-message--warning">
{tr("chat.reconnecting")}
</div>
)}
<ChatPanel
messages={messages}
currentReply={currentReply}
connectionStatus={connectionStatus}
onSendText={sendTextMessage}
/>
</div>
</div>
</div>
<ToastContainer />
</div>
);
}
function App() {
const [locale, setLocale] = useState<Locale>(() => parseLocale(loadConfig().language));
const i18nValue = useMemo(() => ({
locale,
t: (key: string) => t(key, locale),
}), [locale]);
// 监听配置变化以更新 locale
useEffect(() => {
const handler = () => {
const cfg = loadConfig();
setLocale(parseLocale(cfg.language));
};
// 自定义事件,由 saveConfig 触发
window.addEventListener("camtalk-config-changed", handler);
return () => window.removeEventListener("camtalk-config-changed", handler);
}, []);
return (
<I18nContext.Provider value={i18nValue}>
<AppContent />
</I18nContext.Provider>
);
}
export default App;