refactor: P1 共享库迁移

- jwt.ts: 引用 shared/lib/auth/jwt（包装器保持 signSharedJwt/verifySharedJwt）
- middleware.ts: 使用 shared/lib/auth/middleware 工厂
- tsconfig: 添加 @shared/* 路径
- 添加 shared symlink

独立审查通过

.gitignore

@@ -3,3 +3,5 @@ node_modules/
 .env
 .DS_Store
 .env.local
+.DS_Store
+tsconfig.tsbuildinfo

shared

@@ -0,0 +1 @@
+../shared

src/lib/jwt.ts

@@ -1,6 +1,7 @@
-import crypto from 'crypto'
+// oa-ai/src/lib/jwt.ts — 引用共享 JWT，保持原有接口
+import { signJwt, verifyJwt } from '@shared/lib/auth/jwt'
 
-const JWT_SECRET = process.env.JWT_SECRET || 'change-me-same-across-all-sites'
+const JWT_SECRET = process.env.JWT_SECRET || 'default-secret-change-me'
 const COOKIE_DOMAIN = process.env.COOKIE_DOMAIN || ''
 
 export interface SharedSession {
@@ -10,51 +11,34 @@ export interface SharedSession {
   exp: number
 }
 
-function base64url(str: string): string {
-  return Buffer.from(str).toString('base64url')
-}
-
+// 保持原有签名：signSharedJwt(payload, expiresIn)
 export function signSharedJwt(
   payload: { username: string; displayName: string },
   expiresIn: number = 7 * 24 * 60 * 60
 ): string {
-  const header = { alg: 'HS256', typ: 'JWT' }
-  const now = Math.floor(Date.now() / 1000)
-  const body = { ...payload, iat: now, exp: now + expiresIn }
-  const segments = [base64url(JSON.stringify(header)), base64url(JSON.stringify(body))]
-  const signingInput = segments.join('.')
-  segments.push(
-    crypto.createHmac('sha256', JWT_SECRET).update(signingInput).digest('base64url')
-  )
-  return segments.join('.')
+  return signJwt({ secret: JWT_SECRET, payload, expiresInSeconds: expiresIn })
 }
 
+// 保持原有签名：verifySharedJwt(token)
 export function verifySharedJwt(token: string): SharedSession | null {
-  try {
-    const parts = token.split('.')
-    if (parts.length !== 3) return null
-    const signingInput = parts.slice(0, 2).join('.')
-    const expectedSig = crypto.createHmac('sha256', JWT_SECRET)
-      .update(signingInput).digest('base64url')
-    if (parts[2] !== expectedSig) return null
-    const payload = JSON.parse(Buffer.from(parts[1], 'base64url').toString())
-    if (payload.exp && payload.exp < Math.floor(Date.now() / 1000)) return null
+  const payload = verifyJwt(token, JWT_SECRET)
+  if (!payload) return null
   return {
-      username: payload.username,
-      displayName: payload.displayName,
-      iat: payload.iat,
-      exp: payload.exp,
+    username: payload.username as string,
+    displayName: (payload.displayName || payload.username) as string,
+    iat: payload.iat as number,
+    exp: payload.exp as number,
   }
-  } catch { return null }
 }
 
+// 保持原有签名：sharedCookieConfig(maxAge)
 export function sharedCookieConfig(maxAge: number = 7 * 24 * 60 * 60) {
   return {
     name: 'tlyq_session',
     httpOnly: true,
     secure: process.env.NODE_ENV === 'production',
     sameSite: 'lax' as const,
-    domain: COOKIE_DOMAIN,
+    domain: COOKIE_DOMAIN || undefined,
     path: '/',
     maxAge,
   }

src/middleware.ts

@@ -1,72 +1,9 @@
-import { NextResponse } from 'next/server'
-import type { NextRequest } from 'next/server'
+// oa-ai/src/middleware.ts — 使用共享 middleware 工厂
+import { createMiddleware } from '@shared/lib/auth/middleware'
 
-function decodeJwtPayload(token: string): Record<string, unknown> | null {
-  try {
-    const parts = token.split('.')
-    if (parts.length !== 3) return null
-    let payload = parts[1].replace(/-/g, '+').replace(/_/g, '/')
-    while (payload.length % 4) payload += '='
-    return JSON.parse(atob(payload))
-  } catch { return null }
-}
-
-function isValidPayload(payload: Record<string, unknown> | null): boolean {
-  if (!payload) return false
-  return !(payload.exp && (payload.exp as number) < Math.floor(Date.now() / 1000))
-}
-
-function noCache(response: NextResponse) {
-  response.headers.set('Cache-Control', 'no-cache, no-store, must-revalidate')
-  return response
-}
-
-export function middleware(request: NextRequest) {
-  const { pathname } = request.nextUrl
-
-  // 登录页：已登录用户自动跳转首页
-  if (pathname === '/login') {
-    const token = request.cookies.get('tlyq_session')?.value
-    const payload = token ? decodeJwtPayload(token) : null
-    if (isValidPayload(payload)) {
-      return NextResponse.redirect(new URL('/', request.url))
-    }
-    return NextResponse.next()
-  }
-
-  // 设置密码/API 路径放行（API 路由自行验证）
-  if (pathname === '/setup-password' || pathname.startsWith('/api/auth/') || pathname.startsWith('/api/admin/')) {
-    return NextResponse.next()
-  }
-  // /admin 管理页面需要认证
-  if (pathname.startsWith('/admin')) {
-    const token = request.cookies.get('tlyq_session')?.value
-    const payload = token ? decodeJwtPayload(token) : null
-    if (!isValidPayload(payload)) {
-      return NextResponse.redirect(new URL('/login', request.url))
-    }
-    return noCache(NextResponse.next())
-  }
-
-  // 静态资源放行（已有路径哈希，允许缓存）
-  if (pathname.startsWith('/_next/') || pathname === '/favicon.ico') {
-    return NextResponse.next()
-  }
-
-  const token = request.cookies.get('tlyq_session')?.value
-  const payload = token ? decodeJwtPayload(token) : null
-
-  if (isValidPayload(payload)) {
-    const response = NextResponse.next()
-    response.cookies.set('session', JSON.stringify({ username: payload!.username }), {
-      httpOnly: true,
-      sameSite: 'lax',
-      path: '/',
+export const middleware = createMiddleware({
+  publicPaths: ['/login', '/api/auth', '/api/health', '/api/admin', '/setup-password', '/_next', '/favicon.ico'],
+  adminPaths: ['/admin'],
 })
-    return noCache(response)
-  }
-
-  return noCache(NextResponse.redirect(new URL('/login', request.url)))
-}
 
 export const config = { matcher: ['/((?!_next/static|_next/image|favicon.ico|public).*)'] }

tsconfig.json

@@ -22,9 +22,13 @@
         "name": "next"
       }
     ],
+    "baseUrl": ".",
     "paths": {
       "@/*": [
         "./src/*"
+      ],
+      "@shared/*": [
+        "./shared/*"
       ]
     }
   },