from typing import Dict, List
import os

from app.llm.client import llm_client


class GeneralAgent:
    """Agent for general construction questions and conversations."""
    
    def __init__(self):
        """Initialize general agent with prompt template."""
        prompt_path = os.path.join(
            os.path.dirname(__file__), 
            "..", 
            "prompts", 
            "general.txt"
        )
        with open(prompt_path, "r") as f:
            self.system_prompt = f.read()
    
    def answer(self, query: str, chat_history: List[Dict] = None) -> Dict[str, any]:
        """
        Generate answer for general construction queries.
        
        Args:
            query: User query string
            chat_history: Optional chat history for context
            
        Returns:
            Dictionary with 'answer' and 'agent' keys
        """
        try:
            messages = [{"role": "system", "content": self.system_prompt}]
            
            # Add chat history if provided
            if chat_history:
                messages.extend(chat_history[-6:])  # Last 3 exchanges
            
            messages.append({"role": "user", "content": query})
            
            answer = llm_client.get_completion(
                messages=messages,
                temperature=0.7,
                max_tokens=1024
            )
            
            return {
                "answer": answer,
                "agent": "general"
            }
            
        except Exception as e:
            print(f"General agent error: {e}")
            return {
                "answer": "I apologize, but I encountered an error. Please try again.",
                "agent": "general"
            }


# Global general agent instance
general_agent = GeneralAgent()