Update app.py

app.py

@@ -17,7 +17,7 @@ from langdetect import detect
 from transformers import MarianMTModel, MarianTokenizer
 from openai import OpenAI
 
-# ---- Postgres (Neon) ----
+# ---- Postgres ----
 import psycopg2
 from psycopg2 import sql as pgsql
 
@@ -43,14 +43,14 @@ DEVICE = torch.device("cpu")
 OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
 openai_client = OpenAI(api_key=OPENAI_API_KEY) if OPENAI_API_KEY else None
 
-# DSN de Neon (Postgres) – EJEMPLO:
-# postgres://user:pass@host/neondb?sslmode=require
+# DSN de Supabase Postgres – EJEMPLO:
+# postgresql://postgres:TU_PASSWORD@db.xxx.supabase.co:5432/postgres
 POSTGRES_DSN = os.getenv("POSTGRES_DSN")
 
 if not POSTGRES_DSN:
     raise RuntimeError(
         "⚠️ POSTGRES_DSN no está definido. "
-        "Configúralo en los secrets del Space con la cadena de conexión de Neon."
+        "Configúralo en los secrets del Space con la cadena de conexión de Supabase."
     )
 
 # ======================================================
@@ -128,8 +128,6 @@ class PostgresManager:
             "CREATE EXTENSION",
             "ALTER EXTENSION",
             "DROP EXTENSION",
-            "CREATE SCHEMA",          # no queremos recrear schemas globales
-            "ALTER SCHEMA",
             "REVOKE ",
             "GRANT ",
             "ALTER ROLE",
@@ -574,7 +572,7 @@ sql_manager = PostgresManager(POSTGRES_DSN)
 # ======================================================
 
 app = FastAPI(
-    title="NL2SQL Backend (Supabase + Postgres/Neon)",
+    title="NL2SQL Backend",
     version="3.0.0",
 )
 
@@ -1042,7 +1040,7 @@ def _combine_sql_files_from_zip(zip_bytes: bytes) -> str:
 @app.on_event("startup")
 async def startup_event():
     load_nl2sql_model()
-    print("✅ Backend NL2SQL inicializado (engine Postgres/Neon).")
+    print("✅ Backend NL2SQL inicializado.")
     print(f"MODEL_DIR={MODEL_DIR}, DEVICE={DEVICE}")
     print(f"Conexiones activas al inicio: {len(sql_manager.connections)}")
 
@@ -1383,9 +1381,9 @@ def get_my_databases(authorization: Optional[str] = Header(None)):
 @app.get("/")
 async def root():
     return {
-        "message": "NL2SQL T5-large backend running on Postgres/Neon (no SQLite).",
+        "message": "NL2SQL T5-large backend running.",
         "endpoints": [
-            "POST /upload            (subir .sql o .zip con .sql → crea schema en Neon)",
+            "POST /upload            (subir .sql o .zip con .sql → crea schema en Supabase)",
             "GET  /connections       (listar BDs subidas en esta instancia)",
             "GET  /schema/{id}       (esquema resumido)",
             "GET  /preview/{id}/{t}  (preview de tabla)",