import asyncio
from abc import ABC, abstractmethod
from typing import Dict, List, Any, Optional
from core.models import AgentConfig, Task, AgentMessage
import logging

# Set up logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)


class BaseAgent(ABC):
    """Abstract base class for all agents in the system"""
    
    def __init__(self, config: AgentConfig):
        self.config = config
        self.name = config.name
        self.enabled = config.enabled
        self.max_iterations = config.max_iterations
        self.timeout_seconds = config.timeout_seconds
        self.model_name = config.model_name
        self.message_queue = asyncio.Queue()
        self.tasks = []
        
    async def run(self):
        """Main execution loop for the agent"""
        if not self.enabled:
            logger.info(f"Agent {self.name} is disabled, skipping execution")
            return
            
        logger.info(f"Starting agent: {self.name}")
        iteration = 0
        
        while iteration < self.max_iterations:
            try:
                # Process any incoming messages
                await self.process_messages()
                
                # Execute agent-specific logic
                await self.execute()
                
                # Check for new tasks
                await self.check_tasks()
                
                iteration += 1
                await asyncio.sleep(1)  # Small delay to prevent busy waiting
                
            except Exception as e:
                logger.error(f"Error in agent {self.name}: {str(e)}")
                break
                
        logger.info(f"Agent {self.name} finished after {iteration} iterations")
    
    async def process_messages(self):
        """Process messages from other agents"""
        while not self.message_queue.empty():
            message: AgentMessage = await self.message_queue.get()
            await self.handle_message(message)
    
    async def handle_message(self, message: AgentMessage):
        """Handle an incoming message"""
        logger.info(f"Agent {self.name} received message from {message.sender}: {message.content}")
        # Default implementation - override in subclasses as needed
    
    async def send_message(self, recipient: str, content: str, message_type: str = "info"):
        """Send a message to another agent"""
        message = AgentMessage(
            sender=self.name,
            recipient=recipient,
            content=content,
            message_type=message_type
        )
        # In a real implementation, this would send to a message broker
        # For now, we'll just log it
        logger.info(f"Agent {self.name} sending message to {recipient}: {content}")
    
    async def add_task(self, task: Task):
        """Add a task to the agent's queue"""
        self.tasks.append(task)
        logger.info(f"Agent {self.name} added task: {task.description}")
    
    async def check_tasks(self):
        """Check and process any assigned tasks"""
        for task in self.tasks:
            if task.status == "pending" and task.assigned_agent == self.name:
                await self.execute_task(task)
    
    async def execute_task(self, task: Task):
        """Execute a specific task"""
        task.status = "running"
        logger.info(f"Agent {self.name} starting task: {task.description}")
        
        try:
            result = await self._execute_task_logic(task)
            task.status = "completed"
            task.completed_at = datetime.now()
            task.result = result
            logger.info(f"Agent {self.name} completed task: {task.description}")
        except Exception as e:
            task.status = "failed"
            logger.error(f"Agent {self.name} failed task {task.description}: {str(e)}")
    
    @abstractmethod
    async def execute(self):
        """Execute the agent's primary function - must be implemented by subclasses"""
        pass
    
    @abstractmethod
    async def _execute_task_logic(self, task: Task) -> Dict[str, Any]:
        """Execute the specific logic for a task - must be implemented by subclasses"""
        pass