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feat(ux): dark/light theme + en/ja i18n + user preferences

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UX全体にテーマと言語設定を追加。

- lib/db/migrations/004_user_prefs.sql: users に theme/locale 列を追加(既定 dark/en)
- lib/i18n/: dictionary(en/ja) + I18nProvider(クライアントcontext: locale/theme/t/setLocale/setTheme) + server.ts(SSR用 getLocale/getTheme/translate) + constants.ts
- app/layout.tsx: theme/locale Cookie を読み <html class/lang> をSSR、I18nProvider でラップ(フラッシュなし)
- tailwind darkMode:'class' + 全画面に dark: バリアントを一括付与(Nodeスクリプト lookbehind で安全に変換)
- components/layout/ThemeToggle: 即時クラス切替+Cookie+永続化
- app/profile: テーマ/言語セレクタ、chrome翻訳(Header/ProjectNav/login/dashboard/profile)
- PATCH /api/users/me: theme/locale を受理(バリデーション→400)、Cookieを設定
- E2E: locale=ja storageState で既存JAアサーションを維持、theme-i18n.spec で既定en/darkと切替を検証
This commit is contained in:
Ken Yasue
2026-06-25 11:37:44 +02:00
parent 6a134a29bd
commit 921cdc457d
74 changed files with 1092 additions and 279 deletions
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20
app/api/users/me/route.ts
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@ -5,6 +5,8 @@ import { getDb } from '@/lib/db/sqlite';
import { getCurrentUser, toPublicUser } from '@/lib/auth/getCurrentUser';
import { UnauthorizedError } from '@/lib/errors';
import { handleApiError, jsonError } from '@/lib/api/handleError';
import type { Locale, Theme } from '@/lib/types';
import { PREF_MAX_AGE } from '@/lib/i18n/constants';
export const runtime = 'nodejs';
@ -21,6 +23,7 @@ export async function PATCH(request: NextRequest) {
return jsonError(400, 'リクエスト本文が不正です');
}
// theme/locale は生値を Service に渡し、バリデータで不正値を弾く(→ ValidationError → 400)
const authService = new AuthService(new UserRepository(getDb()));
try {
const updated = authService.updateProfile(currentUser.id, {
@ -28,8 +31,23 @@ export async function PATCH(request: NextRequest) {
email: typeof body.email === 'string' ? body.email : undefined,
avatarUrl:
typeof body.avatarUrl === 'string' ? body.avatarUrl : undefined,
theme: typeof body.theme === 'string' ? (body.theme as Theme) : undefined,
locale:
typeof body.locale === 'string' ? (body.locale as Locale) : undefined,
});
return NextResponse.json({ user: toPublicUser(updated) });
const res = NextResponse.json({ user: toPublicUser(updated) });
// 保存結果の theme/locale をCookieに反映(SSRでレイアウトが読めるように)
res.cookies.set('theme', updated.theme, {
path: '/',
maxAge: PREF_MAX_AGE,
sameSite: 'lax',
});
res.cookies.set('locale', updated.locale, {
path: '/',
maxAge: PREF_MAX_AGE,
sameSite: 'lax',
});
return res;
} catch (error) {
return handleApiError(error);
}