web server: adding function handler

src/pyDataInterface/server/web_server.py

@@ -1,6 +1,6 @@
 from enum import Enum
 from pathlib import Path
-from typing import Any, TypedDict
+from typing import Any, TypedDict, get_type_hints
 
 import socketio
 from fastapi import FastAPI
@@ -50,8 +50,8 @@ class WebAPI:
         else:
             sio = socketio.AsyncServer(async_mode="asgi")
 
-        @sio.on("frontend_update")  # type: ignore
+        @sio.event  # type: ignore
-        def handle_frontend_update(sid: str, data: FrontendUpdate) -> None:
+        def frontend_update(sid: str, data: FrontendUpdate) -> Any:
             logger.debug(f"Received frontend update: {data}")
             attr = getattr(self.service, data["name"])
             if isinstance(attr, DataService):
@@ -60,6 +60,24 @@ class WebAPI:
                 setattr(
                     self.service, data["name"], attr.__class__[data["value"]["value"]]
                 )
+            elif callable(attr):
+                args: dict[str, Any] = data["value"]["args"]
+                type_hints = get_type_hints(attr)
+
+                # Convert arguments to their hinted types
+                for arg_name, arg_value in args.items():
+                    if arg_name in type_hints:
+                        arg_type = type_hints[arg_name]
+                        if isinstance(arg_type, type):
+                            # Attempt to convert the argument to its hinted type
+                            try:
+                                args[arg_name] = arg_type(arg_value)
+                            except ValueError:
+                                msg = f"Failed to convert argument '{arg_name}' to type {arg_type.__name__}"
+                                logger.error(msg)
+                                return msg
+
+                return attr(**args)
             else:
                 setattr(self.service, data["name"], data["value"])