Refactor PRAgent class and has_ai_handler_param

method

This commit refactors the PRAgent class and the has_ai_handler_param
method. The has_ai_handler_param method is moved outside the class and
made a standalone function. This change improves code organization and
readability. The has_ai_handler_param function now takes a class object
as a parameter and checks if the class constructor has an "ai_handler"
parameter. This refactoring is done to streamline the code and improve
its maintainability.

No issue references.

pr_agent/agent/pr_agent.py

@@ -38,17 +38,18 @@ command2class = {
 
 commands = list(command2class.keys())
 
+def has_ai_handler_param(cls: object):
+    constructor = getattr(cls, "__init__", None)
+    if constructor is not None:
+        parameters = inspect.signature(constructor).parameters
+        return "ai_handler" in parameters
+    return False
+
 class PRAgent:
     def __init__(self, ai_handler: BaseAiHandler = None):
         self.ai_handler = ai_handler
         pass
     
-    def has_ai_handler_param(cls: object):
-        constructor = getattr(cls, "__init__", None)
-        if constructor is not None:
-            parameters = inspect.signature(constructor).parameters
-            return "ai_handler" in parameters
-        return False
 
     async def handle_request(self, pr_url, request, notify=None) -> bool:
         # First, apply repo specific settings if exists
@@ -75,7 +76,7 @@ class PRAgent:
                 notify()
                 
             get_logger().info(f"Class: {command2class[action]}")
-            if(not self.has_ai_handler_param(cls=command2class[action])):
+            if(not has_ai_handler_param(cls=command2class[action])):
                 await command2class[action](pr_url, args=args).run()
             else:
                 await command2class[action](pr_url, ai_handler=self.ai_handler, args=args).run()