Delete old files and create new nextjs+supabase project

app/auth/callback/route.ts

@@ -0,0 +1,20 @@
+import { createClient } from "@/utils/supabase/server";
+import { NextResponse } from "next/server";
+import { cookies } from "next/headers";
+
+export async function GET(request: Request) {
+  // The `/auth/callback` route is required for the server-side auth flow implemented
+  // by the Auth Helpers package. It exchanges an auth code for the user's session.
+  // https://supabase.com/docs/guides/auth/auth-helpers/nextjs#managing-sign-in-with-code-exchange
+  const requestUrl = new URL(request.url);
+  const code = requestUrl.searchParams.get("code");
+
+  if (code) {
+    const cookieStore = cookies();
+    const supabase = createClient(cookieStore);
+    await supabase.auth.exchangeCodeForSession(code);
+  }
+
+  // URL to redirect to after sign in process completes
+  return NextResponse.redirect(requestUrl.origin);
+}