error handler

app.py

@@ -43,6 +43,7 @@ from flask_socketio import SocketIO, emit, join_room
 from config import Config
 from PIL import Image, ExifTags, ImageFilter, ImageOps
 from werkzeug.middleware.proxy_fix import ProxyFix
+from werkzeug.exceptions import InternalServerError
 from sqlalchemy import func, extract, inspect, or_, case, text
 from sqlalchemy.orm import joinedload
 from collections import defaultdict, deque
@@ -260,10 +261,8 @@ class Receipt(db.Model):
     shopping_list = db.relationship("ShoppingList", back_populates="receipts")
 
 
-@app.errorhandler(OperationalError)
-def handle_db_error(e):
-    app.logger.error(f"[Błąd DB] {e}")
-
+def render_db_unavailable():
+    app.logger.error("[Błąd DB] Baza danych niedostępna")
     if request.accept_mimetypes.best == "application/json":
         return (
             jsonify(
@@ -285,6 +284,22 @@ def handle_db_error(e):
     )
 
 
+@app.errorhandler(OperationalError)
+def handle_db_error(e):
+    app.logger.error(f"[Błąd DB] {e}")
+    return render_db_unavailable()
+
+
+@app.errorhandler(Exception)
+def handle_any_exception(e):
+    orig_exc = getattr(e, "original_exception", None)
+    if isinstance(e, OperationalError) or isinstance(orig_exc, OperationalError):
+        app.logger.error(f"[Błąd DB] {orig_exc or e}")
+        return render_db_unavailable()
+
+    raise e
+
+
 def hash_password(password):
     pepper = app.config["BCRYPT_PEPPER"]
     peppered = (password + pepper).encode("utf-8")