feat(ui): migrate Flutter UI library to Next.js 16 (App Router)

Migrate all 87 Dart files from /Users/chase/Documents/cozsweet/lib/ui/
to TypeScript React components, replacing Flutter-native features with
Web equivalents and reimplementing the BLoC pattern with React
Context + useReducer.

Highlights
- 1:1 BLoC -> Context+useReducer+side-effects mapping for auth, chat,
  user, and sidebar features (4 providers wired in root-providers.tsx)
- 500px MobileShell primitive eliminates per-screen layout boilerplate
- Headless Dialog primitive (createPortal + ESC + scroll lock) powers
  quota / pwa-install / username / pronouns / subscription / other-options
  dialogs
- New integrations/: facebook-sdk, google-identity, pwa-install,
  media-recorder (Web Speech API + MediaRecorder), browser-detect,
  chat-websocket (singleton), message-queue (throttled send)
- CSS Modules + existing design tokens (no new styling system);
  extended with breakpoints.css and dimensions.css
- Custom hooks: useBreakpoint (useSyncExternalStore),
  useFullVisibility (IntersectionObserver), usePwaInstall,
  usePullToRefresh
- Vitest + jsdom; 15 unit tests (chat-reducer, auth-validators)
- React 19.2.4, Next.js 16.2.7, Zod 4, lottie-react, classnames

Workarounds
- next.config.ts: experimental.staticGenerationRetryCount = 0 to
  bypass Next.js 16.2.7 /_global-error workStore prerender bug
- src/app/global-error.tsx: required Client Component
- src/types/globals.d.ts: centralized window.google / FB /
  SpeechRecognition declarations

Routes (/, /splash, /auth, /chat, /chat/deviceid/[deviceId],
/sidebar) all build and lint clean.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
2026-06-09 13:30:54 +08:00
parent b362945195
commit 8cab34864e
114 changed files with 6744 additions and 276 deletions
+45
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"use client";
/**
* 响应式断点 hook
*
* 原始 Dart: lib/ui/core/responsive.dart 的 `Responsive` widget + `isDesktop/isTablet/isMobile` 静态方法。
*
* 实现要点(与 `src/lib/auth/use-auth-gate.tsx` 同款 `useSyncExternalStore` 模式):
* - `subscribe` 监听 3 个 media query 的 change 事件,调用方重读 snapshot。
* - `getServerSnapshot` 返回 `"mobile"`(最保守的默认)以避免 SSR/水合首帧不一致。
* - `getSnapshot` 在客户端按 desktop → tablet → mobile 优先级匹配。
*
* 用法:
* const size = useBreakpoint();
* if (size === "mobile") return <MobileLayout />;
*/
import { useSyncExternalStore } from "react";
import type { DeviceSize } from "@/lib/breakpoints";
const QUERIES = {
mobile: "(max-width: 599.98px)",
tablet: "(min-width: 600px) and (max-width: 1023.98px)",
desktop: "(min-width: 1024px)",
} as const satisfies Record<DeviceSize, string>;
const subscribe = (cb: () => void): (() => void) => {
if (typeof window === "undefined") return () => {};
const mqls = Object.values(QUERIES).map((q) => window.matchMedia(q));
const handler = () => cb();
mqls.forEach((mql) => mql.addEventListener("change", handler));
return () => mqls.forEach((mql) => mql.removeEventListener("change", handler));
};
const getSnapshot = (): DeviceSize => {
if (typeof window === "undefined") return "mobile";
if (window.matchMedia(QUERIES.desktop).matches) return "desktop";
if (window.matchMedia(QUERIES.tablet).matches) return "tablet";
return "mobile";
};
const getServerSnapshot = (): DeviceSize => "mobile";
export function useBreakpoint(): DeviceSize {
return useSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
}
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"use client";
/**
* 下拉刷新 hook(占位实现)
*
* 原始 Dart: `easy_refresh` 包的 `EasyRefresh.builder`chat_area.dart 用来加载更多历史消息)。
*
* 当前实现:最小可用版本 —— 监听顶部 overscroll 触发 onRefresh。
* 后续可替换为 react-use / react-easy-refresh。
*/
import { useEffect, useRef, useState } from "react";
export function usePullToRefresh(
onRefresh: () => Promise<void> | void,
options: { threshold?: number; disabled?: boolean } = {},
): {
isRefreshing: boolean;
pullDistance: number;
containerRef: React.RefObject<HTMLDivElement | null>;
} {
const { threshold = 80, disabled = false } = options;
const [isRefreshing, setIsRefreshing] = useState(false);
const [pullDistance, setPullDistance] = useState(0);
const startY = useRef<number | null>(null);
const containerRef = useRef<HTMLDivElement | null>(null);
useEffect(() => {
if (disabled || typeof window === "undefined") return;
const el = containerRef.current;
if (!el) return;
const onTouchStart = (e: TouchEvent) => {
if (el.scrollTop > 0) return;
startY.current = e.touches[0]?.clientY ?? null;
};
const onTouchMove = (e: TouchEvent) => {
if (startY.current == null) return;
const y = e.touches[0]?.clientY ?? startY.current;
const delta = y - startY.current;
if (delta > 0 && el.scrollTop <= 0) {
setPullDistance(Math.min(delta, threshold * 1.5));
}
};
const onTouchEnd = async () => {
if (startY.current == null) return;
if (pullDistance >= threshold && !isRefreshing) {
setIsRefreshing(true);
try {
await onRefresh();
} finally {
setIsRefreshing(false);
setPullDistance(0);
}
} else {
setPullDistance(0);
}
startY.current = null;
};
el.addEventListener("touchstart", onTouchStart, { passive: true });
el.addEventListener("touchmove", onTouchMove, { passive: true });
el.addEventListener("touchend", onTouchEnd);
return () => {
el.removeEventListener("touchstart", onTouchStart);
el.removeEventListener("touchmove", onTouchMove);
el.removeEventListener("touchend", onTouchEnd);
};
}, [threshold, disabled, isRefreshing, onRefresh, pullDistance]);
return { isRefreshing, pullDistance, containerRef };
}
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"use client";
/**
* PWA Install 提示 hook
*
* 原始 Dart: `pwa_install` 包的 BeforeInstallPrompt 事件封装
* `lib/ui/chat/widgets/pwa_install_overlay.dart` + `pwa_install_dialog.dart`)。
*
* 浏览器 API`beforeinstallprompt` 事件 → 用户触发 → 浏览器展示原生安装提示。
*
* 用法:
* const { canInstall, promptInstall } = usePwaInstall();
* if (canInstall) <button onClick={promptInstall}>Install</button>;
*/
import { useEffect, useState } from "react";
interface BeforeInstallPromptEvent extends Event {
prompt(): Promise<void>;
userChoice: Promise<{ outcome: "accepted" | "dismissed" }>;
}
export function usePwaInstall(): {
canInstall: boolean;
promptInstall: () => Promise<"accepted" | "dismissed" | "unavailable">;
} {
const [deferred, setDeferred] = useState<BeforeInstallPromptEvent | null>(null);
useEffect(() => {
if (typeof window === "undefined") return;
const handler = (e: Event) => {
e.preventDefault();
setDeferred(e as BeforeInstallPromptEvent);
};
window.addEventListener("beforeinstallprompt", handler);
return () => window.removeEventListener("beforeinstallprompt", handler);
}, []);
return {
canInstall: deferred !== null,
promptInstall: async () => {
if (!deferred) return "unavailable";
await deferred.prompt();
const choice = await deferred.userChoice;
setDeferred(null);
return choice.outcome;
},
};
}
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"use client";
/**
* 元素全可见性 hook
*
* 原始 Dart: `visibility_detector` 包的 `VisibilityDetector`chat_screen 用法:
* onVisibilityChanged: (info) { if (info.visibleFraction == 1.0) ... })。
*
* 用 IntersectionObserverthreshold=1.0 触发 `isIntersecting` 即视为「完全可见」。
* 返回 `[isVisible, ref]`,与 Flutter `VisibilityDetector` 的语义对齐。
*
* 用法:
* const [isVisible, ref] = useFullVisibility();
* useEffect(() => { dispatch(isVisible ? Visible() : Invisible()); }, [isVisible]);
*/
import { useEffect, useRef, useState } from "react";
export function useFullVisibility(
threshold = 1.0,
): readonly [boolean, React.RefObject<HTMLDivElement | null>] {
const ref = useRef<HTMLDivElement | null>(null);
const [visible, setVisible] = useState(false);
useEffect(() => {
const el = ref.current;
if (!el || typeof IntersectionObserver === "undefined") return;
const observer = new IntersectionObserver(
(entries) => {
const entry = entries[0];
if (!entry) return;
setVisible(
entry.isIntersecting && entry.intersectionRatio >= threshold,
);
},
{ threshold: [threshold] },
);
observer.observe(el);
return () => observer.disconnect();
}, [threshold]);
return [visible, ref] as const;
}