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1 | 1 | import { NextResponse } from 'next/server' |
2 | 2 | import { NextRequest, ProxyConfig } from 'next/server' |
| 3 | +import { getAuth } from 'firebase-admin/auth' |
| 4 | +import { adminApp } from './lib/firebase/admin' |
| 5 | + |
| 6 | +const auth = getAuth(adminApp) |
3 | 7 |
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4 | 8 | export async function proxy(request: NextRequest) { |
5 | | - if (!request.cookies.has(process.env.SESSION_COOKIE_NAME!)) { |
| 9 | + const sessionName = process.env.SESSION_COOKIE_NAME! |
| 10 | + const refreshTokenName = process.env.REFRESH_TOKEN_COOKIE_NAME! |
| 11 | + const refreshToken = request.cookies.get(refreshTokenName)?.value |
| 12 | + const idToken = request.cookies.get(sessionName)?.value |
| 13 | + |
| 14 | + // If neither token exists, redirect to login |
| 15 | + if (!idToken && !refreshToken) { |
| 16 | + const loginUrl = new URL('/login', request.url) |
| 17 | + loginUrl.searchParams.set('from', request.nextUrl.pathname) |
| 18 | + return NextResponse.redirect(loginUrl) |
| 19 | + } |
| 20 | + |
| 21 | + // If ID token is missing but refresh token exists, try to refresh |
| 22 | + if (!idToken && refreshToken) { |
| 23 | + try { |
| 24 | + console.log('proxy: ID token missing, refreshing with refresh token') |
| 25 | + const refreshResponse = await fetch( |
| 26 | + `https://securetoken.googleapis.com/v1/token?key=${process.env.FIREBASE_API_KEY}`, |
| 27 | + { |
| 28 | + method: 'POST', |
| 29 | + headers: { 'Content-Type': 'application/x-www-form-urlencoded' }, |
| 30 | + body: new URLSearchParams({ |
| 31 | + grant_type: 'refresh_token', |
| 32 | + refresh_token: refreshToken, |
| 33 | + }), |
| 34 | + } |
| 35 | + ) |
| 36 | + |
| 37 | + if (!refreshResponse.ok) { |
| 38 | + throw new Error('Failed to refresh token') |
| 39 | + } |
| 40 | + |
| 41 | + const data = await refreshResponse.json() |
| 42 | + const newIdToken = data.id_token |
| 43 | + const newRefreshToken = data.refresh_token |
| 44 | + |
| 45 | + const decodedToken = await auth.verifyIdToken(newIdToken) |
| 46 | + const expiresIn = decodedToken.exp * 1000 - Date.now() |
| 47 | + |
| 48 | + const response = NextResponse.next() |
| 49 | + |
| 50 | + response.cookies.set(sessionName, newIdToken, { |
| 51 | + maxAge: Math.floor(expiresIn / 1000), |
| 52 | + httpOnly: true, |
| 53 | + secure: true, |
| 54 | + sameSite: 'strict', |
| 55 | + }) |
| 56 | + |
| 57 | + response.cookies.set(refreshTokenName, newRefreshToken, { |
| 58 | + maxAge: 30 * 24 * 60 * 60, // 30 days |
| 59 | + httpOnly: true, |
| 60 | + secure: true, |
| 61 | + sameSite: 'strict', |
| 62 | + }) |
| 63 | + |
| 64 | + return response |
| 65 | + } catch (refreshError) { |
| 66 | + console.error('Token refresh failed:', refreshError) |
| 67 | + const loginUrl = new URL('/login', request.url) |
| 68 | + loginUrl.searchParams.set('from', request.nextUrl.pathname) |
| 69 | + return NextResponse.redirect(loginUrl) |
| 70 | + } |
| 71 | + } |
| 72 | + |
| 73 | + // ID token exists, verify it |
| 74 | + try { |
| 75 | + await auth.verifyIdToken(idToken!) |
| 76 | + return NextResponse.next() |
| 77 | + } catch (error: any) { |
| 78 | + console.log('proxy: Token verification error:', error) |
| 79 | + |
| 80 | + // Token is expired, try to refresh |
| 81 | + if (error?.code === 'auth/id-token-expired' && refreshToken) { |
| 82 | + try { |
| 83 | + console.log('proxy: ID token expired, refreshing') |
| 84 | + const refreshResponse = await fetch( |
| 85 | + `https://securetoken.googleapis.com/v1/token?key=${process.env.FIREBASE_API_KEY}`, |
| 86 | + { |
| 87 | + method: 'POST', |
| 88 | + headers: { 'Content-Type': 'application/x-www-form-urlencoded' }, |
| 89 | + body: new URLSearchParams({ |
| 90 | + grant_type: 'refresh_token', |
| 91 | + refresh_token: refreshToken, |
| 92 | + }), |
| 93 | + } |
| 94 | + ) |
| 95 | + |
| 96 | + if (!refreshResponse.ok) { |
| 97 | + throw new Error('Failed to refresh token') |
| 98 | + } |
| 99 | + |
| 100 | + const data = await refreshResponse.json() |
| 101 | + const newIdToken = data.id_token |
| 102 | + const newRefreshToken = data.refresh_token |
| 103 | + |
| 104 | + const decodedToken = await auth.verifyIdToken(newIdToken) |
| 105 | + const expiresIn = decodedToken.exp * 1000 - Date.now() |
| 106 | + |
| 107 | + const response = NextResponse.next() |
| 108 | + |
| 109 | + response.cookies.set(sessionName, newIdToken, { |
| 110 | + maxAge: Math.floor(expiresIn / 1000), |
| 111 | + httpOnly: true, |
| 112 | + secure: true, |
| 113 | + sameSite: 'strict', |
| 114 | + }) |
| 115 | + |
| 116 | + response.cookies.set(refreshTokenName, newRefreshToken, { |
| 117 | + maxAge: 30 * 24 * 60 * 60, // 30 days |
| 118 | + httpOnly: true, |
| 119 | + secure: true, |
| 120 | + sameSite: 'strict', |
| 121 | + }) |
| 122 | + |
| 123 | + return response |
| 124 | + } catch (refreshError) { |
| 125 | + console.error('Token refresh failed:', refreshError) |
| 126 | + const loginUrl = new URL('/login', request.url) |
| 127 | + loginUrl.searchParams.set('from', request.nextUrl.pathname) |
| 128 | + return NextResponse.redirect(loginUrl) |
| 129 | + } |
| 130 | + } |
| 131 | + |
| 132 | + // Token is revoked or invalid, redirect to login |
6 | 133 | const loginUrl = new URL('/login', request.url) |
7 | 134 | loginUrl.searchParams.set('from', request.nextUrl.pathname) |
8 | 135 | return NextResponse.redirect(loginUrl) |
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