Not tested yet

src/handlers/user_handler.py

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+import logging
+from typing import List
+from src.services.user_service import UserService
+from src.models.user import User
+
+logger = logging.getLogger(__name__)
+
+class UserHandler:
+    """Handler class for user-related commands"""
+    
+    def __init__(self, user_service: UserService):
+        self.user_service = user_service
+    
+    def handle_get_all_users(self) -> str:
+        """Handle command to get all users"""
+        try:
+            users = self.user_service.get_all_users()
+            if users:
+                user_list = "\n".join([f"• {user.username} ({user.name}) - ID: {user.id}" for user in users])
+                return f"👥 All Users ({len(users)}):\n{user_list}"
+            else:
+                return "📭 No users found"
+        except Exception as e:
+            logger.error(f"Error retrieving users: {e}")
+            return f"❌ Error retrieving users: {str(e)}"
+    
+    def handle_get_user_by_id(self, user_id: int) -> str:
+        """Handle command to get a specific user by ID"""
+        try:
+            user = self.user_service.get_user_by_id(user_id)
+            if user:
+                return f"👤 User Info:\nID: {user.id}\nUsername: {user.username}\nName: {user.name}"
+            else:
+                return f"❌ User with ID {user_id} not found"
+        except Exception as e:
+            logger.error(f"Error retrieving user {user_id}: {e}")
+            return f"❌ Error retrieving user: {str(e)}"
+    
+    def handle_add_user(self, username: str) -> str:
+        """Handle command to add a new user"""
+        try:
+            # Generate user_id as a hash of the username
+            import hashlib
+            user_id = int(hashlib.md5(username.encode()).hexdigest()[:8], 16)
+            
+            user = User(id=user_id, username=username, name=username)
+            success = self.user_service.save_user(user)
+            if success:
+                return f"✅ User {username} added successfully (ID: {user_id})"
+            else:
+                return "❌ Failed to add user"
+        except Exception as e:
+            logger.error(f"Error adding user {username}: {e}")
+            return f"❌ Error adding user: {str(e)}"
+    
+    def handle_delete_user(self, user_id: int) -> str:
+        """Handle command to delete a user"""
+        try:
+            success = self.user_service.delete_user(user_id)
+            if success:
+                return f"✅ User with ID {user_id} deleted successfully"
+            else:
+                return "❌ Failed to delete user"
+        except Exception as e:
+            logger.error(f"Error deleting user {user_id}: {e}")
+            return f"❌ Error deleting user: {str(e)}"