feat: add supabase db

backend/app/api/datasources.py

@@ -133,4 +133,7 @@ def test_datasource_connection(
         else:
              raise HTTPException(status_code=400, detail="Connection failed")
     except Exception as e:
+        import traceback
+        import sys
+        print(f"Datasource Test Error: {str(e)}\n{traceback.format_exc()}", file=sys.stderr)
         raise HTTPException(status_code=400, detail=f"Connection failed: {str(e)}")

backend/app/connectors/factory.py

@@ -13,9 +13,17 @@ def _get_cached_connector(ds_type: str, config_json: str):
     config = json.loads(config_json)
     
     if ds_type in ["postgres", "postgresql", "supabase"]:
-        # Supabase is just postgres
-        db_url = config.get("connection_string") or \
-                 f"postgresql://{config.get('user')}:{config.get('password')}@{config.get('host')}:{config.get('port', 5432)}/{config.get('database')}"
+        db_url = config.get("connection_string")
+        if not db_url:
+            default_port = 6543 if ds_type == "supabase" else 5432
+            port = config.get("port") or default_port
+            db_url = f"postgresql://{config.get('user')}:{config.get('password')}@{config.get('host')}:{port}/{config.get('database')}"
+            
+        if ds_type == "supabase" and "?" not in db_url:
+            db_url += "?sslmode=require"
+        elif ds_type == "supabase" and "sslmode=" not in db_url:
+            db_url += "&sslmode=require"
+            
         return PostgresConnector(db_url=db_url)
         
     elif ds_type == "sqlite":

backend/app/connectors/postgres.py

@@ -69,6 +69,6 @@ class PostgresConnector:
             return True
         except Exception as e:
             print(f"PostgreSQL Connection Error: {e}")
-            return False
+            raise e
 
 postgres_connector = PostgresConnector()