import logging
from typing import List, Dict, Optional
from core.llm_factory import llm_factory, ProviderNotAvailableError

logger = logging.getLogger(__name__)

class LLMClient:
    """High-level LLM client that uses the factory pattern"""
    
    def __init__(self, provider: Optional[str] = None):
        self.provider_name = provider
        try:
            self.provider = llm_factory.get_provider(provider)
        except ProviderNotAvailableError:
            self.provider = None
            logger.error("No LLM providers available")
    
    def generate(self, prompt: str, conversation_history: List[Dict], stream: bool = False):
        """Generate a response"""
        if not self.provider:
            raise ProviderNotAvailableError("No LLM provider available")
            
        try:
            if stream:
                return self.provider.stream_generate(prompt, conversation_history)
            else:
                return self.provider.generate(prompt, conversation_history)
        except Exception as e:
            logger.error(f"LLM generation failed: {e}")
            raise

def send_to_ollama(prompt: str, conversation_history: List[Dict], ollama_url: str, model: str) -> Optional[str]:
    """Legacy function for backward compatibility"""
    try:
        from core.providers.ollama import OllamaProvider
        provider = OllamaProvider(model)
        return provider.generate(prompt, conversation_history)
    except Exception as e:
        logger.error(f"Ollama call failed: {e}")
        return None

def send_to_hf(prompt: str, conversation_history: List[Dict]) -> Optional[str]:
    """Legacy function for backward compatibility"""
    try:
        from utils.config import config
        from core.providers.huggingface import HuggingFaceProvider
        provider = HuggingFaceProvider("meta-llama/Llama-2-7b-chat-hf")
        return provider.generate(prompt, conversation_history)
    except Exception as e:
        logger.error(f"Hugging Face call failed: {e}")
        return None