fix(login): replace useSearchParams with native URLSearchParams + loading spinner

- useSearchParams can lose params during re-renders, causing blank page
- Use native window.location.search + URLSearchParams instead (always accessible)
- Add oauthProcessing spinner state so user sees 'Menyelesaikan login...'
  instead of blank page while /auth/me is being called

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/deploy.yml

@@ -179,6 +179,9 @@ jobs:
             SESSION_SECRET=${{ secrets.SESSION_SECRET }}
             WEB_APP_URL=https://zeavisedu.asepharyana.my.id
             ML_SERVICE_URL=http://zeavis-ml:8000
+            GOOGLE_CLIENT_ID=${{ secrets.GOOGLE_CLIENT_ID }}
+            GOOGLE_CLIENT_SECRET=${{ secrets.GOOGLE_CLIENT_SECRET }}
+            GOOGLE_REDIRECT_URI=https://zeavisedu.asepharyana.my.id/api/v1/auth/google/callback
             ENVEOF
             } > .env
 

apps/api/src/routes/auth.ts

@@ -186,7 +186,8 @@ export const authRoutes = new Elysia({ prefix: '/api/v1/auth' })
       prompt: 'select_account',
     });
 
-    set.redirect = `https://accounts.google.com/o/oauth2/v2/auth?${params.toString()}`;
+    set.status = 302;
+    set.headers['Location'] = `https://accounts.google.com/o/oauth2/v2/auth?${params.toString()}`;
   })
   .get('/google/callback', async ({ query, set, request }) => {
     if (!env.googleOAuthEnabled) {
@@ -199,7 +200,8 @@ export const authRoutes = new Elysia({ prefix: '/api/v1/auth' })
 
     // User denied or Google returned an error
     if (error || !code) {
-      set.redirect = `${env.webAppUrl}/login?error=${encodeURIComponent(error ?? 'missing_code')}`;
+      set.status = 302;
+      set.headers['Location'] = `${env.webAppUrl}/login?error=${encodeURIComponent(error ?? 'missing_code')}`;
       return;
     }
 
@@ -210,13 +212,15 @@ export const authRoutes = new Elysia({ prefix: '/api/v1/auth' })
       idPayload = decodeGoogleIdToken(tokens.id_token);
     } catch (err) {
       const msg = err instanceof Error ? err.message : 'Google auth failed';
-      set.redirect = `${env.webAppUrl}/login?error=${encodeURIComponent(msg)}`;
+      set.status = 302;
+      set.headers['Location'] = `${env.webAppUrl}/login?error=${encodeURIComponent(msg)}`;
       return;
     }
 
     // Validate email
     if (!idPayload.email_verified || !idPayload.email) {
-      set.redirect = `${env.webAppUrl}/login?error=${encodeURIComponent('Email not verified by Google')}`;
+      set.status = 302;
+      set.headers['Location'] = `${env.webAppUrl}/login?error=${encodeURIComponent('Email not verified by Google')}`;
       return;
     }
 
@@ -256,8 +260,10 @@ export const authRoutes = new Elysia({ prefix: '/api/v1/auth' })
       authCounter.labels('login', 'true').inc();
 
       // Redirect to web app with token in URL for localStorage fallback
-      set.redirect = `${env.webAppUrl}/login?token=${encodeURIComponent(token)}`;
+      set.status = 302;
+      set.headers['Location'] = `${env.webAppUrl}/login?token=${encodeURIComponent(token)}`;
     } catch (err) {
-      set.redirect = `${env.webAppUrl}/login?error=${encodeURIComponent('Database unavailable')}`;
+      set.status = 302;
+      set.headers['Location'] = `${env.webAppUrl}/login?error=${encodeURIComponent('Database unavailable')}`;
     }
   });

apps/web/src/pages/login-page.tsx

@@ -1,23 +1,28 @@
 import { useState, useEffect, useRef } from "react";
-import { Link, useNavigate, useSearchParams } from "react-router-dom";
+import { Link, useNavigate } from "react-router-dom";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import { AuthForm } from "@/components/auth-form";
 import { apiClient, setAuthToken } from "@/lib/api-client";
 import { useAuthStore } from "@/store/auth-store";
 
+function getUrlParam(name: string): string | null {
+  return new URLSearchParams(window.location.search).get(name);
+}
+
 export function LoginPage() {
   const navigate = useNavigate();
   const queryClient = useQueryClient();
   const setUser = useAuthStore((state) => state.setUser);
   const [error, setError] = useState<string | null>(null);
-  const [searchParams] = useSearchParams();
   const oauthTokenConsumed = useRef(false);
+  const [oauthProcessing, setOauthProcessing] = useState(false);
 
   // Handle OAuth callback: the API redirects to /login?token=<session_token>
   useEffect(() => {
-    const token = searchParams.get("token");
+    const token = getUrlParam("token");
     if (!token || oauthTokenConsumed.current) return;
     oauthTokenConsumed.current = true;
+    setOauthProcessing(true);
 
     // Store token for future API calls and fetch user
     setAuthToken(token);
@@ -31,12 +36,13 @@ export function LoginPage() {
       })
       .catch((err) => {
         setAuthToken(null);
+        setOauthProcessing(false);
         setError(err instanceof Error ? err.message : "Google login gagal");
       });
-  }, [searchParams, setUser, queryClient, navigate]);
+  }, [setUser, queryClient, navigate]);
 
   // Show OAuth error from query param
-  const oauthError = searchParams.get("error");
+  const oauthError = getUrlParam("error");
   const meQuery = useQuery({
     queryKey: ["auth", "me"],
     queryFn: () => apiClient.getMe(),
@@ -53,6 +59,18 @@ export function LoginPage() {
       setError(err instanceof Error ? err.message : "Login gagal"),
   });
 
+  // Show loading spinner while OAuth token is being processed
+  if (oauthProcessing) {
+    return (
+      <main className="flex min-h-screen items-center justify-center px-6 py-12">
+        <div className="flex flex-col items-center gap-3">
+          <div className="h-10 w-10 border-4 border-green-500 border-t-transparent rounded-full animate-spin" />
+          <p className="text-gray-500 text-sm">Menyelesaikan login dengan Google...</p>
+        </div>
+      </main>
+    );
+  }
+
   return (
     <main className="flex min-h-screen items-center justify-center px-6 py-12">
       <div className="w-full max-w-sm md:max-w-md space-y-4">