Mapped column (#22644)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

api/services/app_service.py

@@ -1,6 +1,6 @@
 import json
 import logging
-from typing import Optional, cast
+from typing import Optional, TypedDict, cast
 
 from flask_login import current_user
 from flask_sqlalchemy.pagination import Pagination
@@ -220,18 +220,27 @@ class AppService:
 
         return app
 
-    def update_app(self, app: App, args: dict) -> App:
+    class ArgsDict(TypedDict):
+        name: str
+        description: str
+        icon_type: str
+        icon: str
+        icon_background: str
+        use_icon_as_answer_icon: bool
+        max_active_requests: int
+
+    def update_app(self, app: App, args: ArgsDict) -> App:
         """
         Update app
         :param app: App instance
         :param args: request args
         :return: App instance
         """
-        app.name = args.get("name")
-        app.description = args.get("description", "")
-        app.icon_type = args.get("icon_type", "emoji")
-        app.icon = args.get("icon")
-        app.icon_background = args.get("icon_background")
+        app.name = args["name"]
+        app.description = args["description"]
+        app.icon_type = args["icon_type"]
+        app.icon = args["icon"]
+        app.icon_background = args["icon_background"]
         app.use_icon_as_answer_icon = args.get("use_icon_as_answer_icon", False)
         app.max_active_requests = args.get("max_active_requests")
         app.updated_by = current_user.id