Created
January 14, 2025 00:04
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Payload CMS Middleware + Clerk
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import { NextResponse } from 'next/server' | |
import type { NextRequest } from 'next/server' | |
import { verifyToken } from '@clerk/backend' | |
interface JwtPayload { | |
exp: number; | |
fva?: [number, number] | undefined; | |
iat: number; | |
iss: string; | |
nbf: number; | |
sid: string; | |
sub: string; | |
} | |
// This function can be marked `async` if using `await` inside | |
export async function middleware(request: NextRequest) { | |
const clerkToken = request.headers.get('x-clerk-session-token'); | |
if (clerkToken) { | |
verifyClerkToken(clerkToken) | |
} | |
return NextResponse.next(); | |
} | |
export const config = { | |
matcher: '/api/diagnosis/:function*', | |
} | |
// Reference: https://clerk.com/docs/references/backend/verify-token#parameters | |
const tokenIsValid = (payload: JwtPayload): boolean => { | |
return payload.exp && payload.iat && payload.iss && payload.nbf && payload.sid && payload.sub ? true : false; | |
} | |
// Only runs if the header contains `x-clerk-session-token` | |
const verifyClerkToken = async (clerkToken: string) => { | |
let resultToken = undefined; | |
try { | |
resultToken = await verifyToken(clerkToken, { | |
jwtKey: process.env.CLERK_JWT_KEY, | |
}) | |
} catch (error) { | |
return Response.json({ | |
"status": 401, | |
"clerkError": true, | |
"errors": [ | |
{ | |
"code": "unexpected_error", | |
"message": "Unexpected error.", | |
"longMessage": "Unexpected error.", | |
} | |
] | |
}, { status: 401 }) | |
} | |
if (!tokenIsValid(resultToken)) { | |
return Response.json({ | |
"status": 401, | |
"clerkError": true, | |
"errors": [ | |
{ | |
"code": "token_invalid", | |
"message": "Token invalid. User must sign in.", | |
"longMessage": "Token invalid. User must sign in.", | |
} | |
] | |
}, { status: 401 }) | |
} | |
} |
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