Update app/main.py

app/main.py

@@ -8,8 +8,7 @@ from fastapi import FastAPI, Query, Response
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import FileResponse, HTMLResponse, RedirectResponse
 from pydantic import BaseModel
-from app.google_oauth import build_flow, save_credentials
-
+from app.google_oauth import build_flow, save_credentials, OAUTH_TEMP
 
 from .agent import ShoppingAgent
 from .feedback import caminho_feedback, google_sheets_habilitado, salvar_feedback
@@ -119,28 +118,29 @@ def auth_google():
 @app.get("/oauth2callback")
 def oauth2callback(request: Request):
     try:
-        state = request.query_params.get("state")
         code = request.query_params.get("code")
 
         if not code:
-            return HTMLResponse(f"""
-            <h2>Erro OAuth</h2>
-            <p>Code não recebido</p>
-            <pre>{request.url}</pre>
-            """, status_code=400)
+            return HTMLResponse("Erro: código OAuth não recebido.", status_code=400)
 
-        flow = build_flow(state=oauth_state.get("state"))
+        flow = build_flow(
+            state=OAUTH_TEMP.get("state"),
+            code_verifier=OAUTH_TEMP.get("code_verifier"),
+        )
 
         flow.fetch_token(code=code)
-
         save_credentials(flow.credentials)
 
         return HTMLResponse("""
         <h2>✅ Google Sheets autorizado com sucesso!</h2>
+        <p>Agora o backend pode salvar feedbacks na planilha.</p>
         """)
 
     except Exception as e:
-        return HTMLResponse(f"<pre>{e}</pre>", status_code=500)
+        return HTMLResponse(
+            f"<h2>Erro no OAuth callback</h2><pre>{type(e).__name__}: {str(e)}</pre>",
+            status_code=500
+        )
 
 
 @app.get("/auth/status")