Make Google OAuth redirect_uri dynamic based on request origin to support both shahikitchen.se and www.shahikitchen.se

app/api/auth/google/route.ts

@@ -16,7 +16,7 @@ const OAUTH_STATE_COOKIE = 'shahi_google_oauth_state';
 
 export async function GET(request: Request) {
   if (!isGoogleOAuthConfigured()) {
-    return NextResponse.redirect(new URL('/login?tab=customer&error=google_not_configured', getOrigin()));
+    return NextResponse.redirect(new URL('/login?tab=customer&error=google_not_configured', getOrigin(request)));
   }
 
   const url = new URL(request.url);
@@ -39,9 +39,18 @@ export async function GET(request: Request) {
     maxAge: 600,
   });
 
-  return NextResponse.redirect(buildGoogleAuthUrl(state));
+  return NextResponse.redirect(buildGoogleAuthUrl(state, request));
 }
 
-function getOrigin(): string {
+function getOrigin(req?: Request): string {
+  if (req) {
+    try {
+      const url = new URL(req.url);
+      if (process.env.NODE_ENV === 'production' && url.protocol === 'http:') {
+        url.protocol = 'https:';
+      }
+      return url.origin;
+    } catch {}
+  }
   return process.env.NEXT_PUBLIC_SITE_URL ?? 'http://localhost:3000';
 }