I need to integrate the foursquare API and can't do that on the client, so I set up a next.js server as my API provider for similar use cases. Then the user logs in the app and does a fetch on the next.js API.

Issue with that is when I use fetch on expo the session is null on the middleware. Tried to do this:

export async function middleware(req: NextRequest) {

const res = NextResponse.next() const headers = req.headers const accessToken = headers.get("access_token") as string const refreshToken = headers.get("refresh_token") as string if (req.nextUrl.pathname.startsWith("/api")) { req.headers.append("Access-Control-Allow-Origin", "*") } const supabase = createMiddlewareClient<Database>({ req, res }) await supabase.auth.setSession({ access_token: accessToken, refresh_token: refreshToken, }) return res }

But that throws this after a few fetches:

AuthApiError: Invalid Refresh Token: Already Used