import time
import logging
from typing import List, Dict, Optional, Union, Tuple
from src.llm.base_provider import LLMProvider
from src.llm.hf_provider import HuggingFaceProvider
from src.llm.ollama_provider import OllamaProvider
from core.session import session_manager
from utils.config import config

logger = logging.getLogger(__name__)

class MentorProvider(LLMProvider):
    """Mentor provider that uses HF as expert and Ollama as mentor/coach"""
    
    def __init__(self, model_name: str, timeout: int = 120, max_retries: int = 2):
        super().__init__(model_name, timeout, max_retries)
        self.hf_provider = None
        self.ollama_provider = None
        self.conversation_analyzer = ConversationAnalyzer()
        
        # Initialize providers
        try:
            if config.hf_token:
                self.hf_provider = HuggingFaceProvider(
                    model_name="DavidAU/OpenAi-GPT-oss-20b-abliterated-uncensored-NEO-Imatrix-gguf",
                    timeout=120
                )
        except Exception as e:
            logger.warning(f"Failed to initialize HF provider: {e}")
            
        try:
            if config.ollama_host:
                self.ollama_provider = OllamaProvider(
                    model_name=config.local_model_name,
                    timeout=60
                )
        except Exception as e:
            logger.warning(f"Failed to initialize Ollama provider: {e}")

    def generate(self, prompt: str, conversation_history: List[Dict]) -> Optional[str]:
        """Generate response using mentor approach"""
        try:
            # Step 1: Get expert response from HF Endpoint
            hf_response = self._get_expert_response(prompt, conversation_history)
            
            if not hf_response:
                raise Exception("HF Endpoint expert failed to provide response")
            
            # Step 2: Get mentor analysis from Ollama
            mentor_insights = self._get_mentor_analysis(
                prompt, 
                hf_response, 
                conversation_history
            )
            
            # Step 3: Combine expert response with mentor insights
            combined_response = self._combine_responses(hf_response, mentor_insights)
            
            # Step 4: Store interaction for learning
            self._store_interaction(prompt, hf_response, mentor_insights)
            
            return combined_response
            
        except Exception as e:
            logger.error(f"Mentor generation failed: {e}")
            
            # Fallback to HF only
            if self.hf_provider:
                try:
                    logger.info("Falling back to HF Endpoint only")
                    return self.hf_provider.generate(prompt, conversation_history)
                except Exception as fallback_error:
                    logger.error(f"HF fallback also failed: {fallback_error}")
            
            raise Exception(f"All providers failed: {str(e)}")

    def stream_generate(self, prompt: str, conversation_history: List[Dict]) -> Optional[Union[str, List[str]]]:
        """Stream response using mentor approach"""
        try:
            # For streaming, we'll stream HF response and add mentor insights at the end
            if self.hf_provider:
                hf_stream = self.hf_provider.stream_generate(prompt, conversation_history)
                return hf_stream
            else:
                raise Exception("No HF provider available for streaming")
        except Exception as e:
            logger.error(f"Mentor stream generation failed: {e}")
            raise

    def _get_expert_response(self, prompt: str, conversation_history: List[Dict]) -> Optional[str]:
        """Get expert response from HF Endpoint"""
        if not self.hf_provider:
            return None
            
        try:
            logger.info("🤖 Getting expert response from HF Endpoint...")
            response = self.hf_provider.generate(prompt, conversation_history)
            logger.info("✅ HF Endpoint expert response received")
            return response
        except Exception as e:
            logger.error(f"HF Endpoint expert failed: {e}")
            return None

    def _get_mentor_analysis(self, user_prompt: str, hf_response: str, conversation_history: List[Dict]) -> Dict:
        """Get mentor analysis and suggestions from Ollama"""
        if not self.ollama_provider:
            return {}
            
        try:
            logger.info("🐱 Getting mentor analysis from Ollama...")
            
            # Create mentor prompt for analysis
            mentor_prompt = self._create_mentor_prompt(user_prompt, hf_response, conversation_history)
            
            # Get mentor insights
            mentor_response = self.ollama_provider.generate(mentor_prompt, [])
            
            # Parse mentor response into structured insights
            insights = self.conversation_analyzer.parse_mentor_response(mentor_response)
            
            logger.info("✅ Ollama mentor analysis completed")
            return insights
            
        except Exception as e:
            logger.warning(f"Ollama mentor analysis failed: {e}")
            return {}

    def _create_mentor_prompt(self, user_prompt: str, hf_response: str, conversation_history: List[Dict]) -> str:
        """Create prompt for Ollama mentor to analyze interaction"""
        conversation_context = "\n".join([
            f"{msg['role']}: {msg['content']}" 
            for msg in conversation_history[-5:]  # Last 5 messages for context
        ])
        
        prompt = f"""
You are an AI mentor and conversation analyst. Your job is to analyze the interaction between a user and an expert AI, then provide insightful guidance.

ANALYZE THIS INTERACTION:
User Question: "{user_prompt}"
Expert Response: "{hf_response}"

Recent Conversation Context:
{conversation_context}

PROVIDE YOUR ANALYSIS IN THIS FORMAT:

<thinking_analysis>
Analyze the expert's reasoning approach, depth of analysis, and problem-solving methodology.
</thinking_analysis>

<goal_progress>
Assess how well this response advances toward the user's likely goals based on conversation history.
</goal_progress>

<follow_up_suggestions>
Provide 2-3 thoughtful follow-up questions or research directions that would deepen understanding.
</follow_up_suggestions>

<data_gathering>
Suggest what additional information or data would be valuable to collect.
</data_gathering>

<critical_insights>
Highlight any key insights, potential blind spots, or areas needing further exploration.
</critical_insights>

Keep your analysis concise but insightful. Focus on helping the user achieve their goals through better questioning and information gathering.
"""
        return prompt

    def _combine_responses(self, hf_response: str, mentor_insights: Dict) -> str:
        """Combine expert response with mentor insights"""
        if not mentor_insights:
            return hf_response
            
        # Format mentor insights nicely
        insights_section = "\n\n--- 🎓 Mentor Insights ---\n"
        
        if mentor_insights.get('thinking_analysis'):
            insights_section += f"\n🧠 **Thinking Analysis**\n{mentor_insights['thinking_analysis']}"
            
        if mentor_insights.get('goal_progress'):
            insights_section += f"\n\n🎯 **Goal Progress**\n{mentor_insights['goal_progress']}"
            
        if mentor_insights.get('follow_up_suggestions'):
            insights_section += f"\n\n🤔 **Follow-up Suggestions**\n{mentor_insights['follow_up_suggestions']}"
            
        if mentor_insights.get('data_gathering'):
            insights_section += f"\n\n📋 **Data to Gather**\n{mentor_insights['data_gathering']}"
            
        if mentor_insights.get('critical_insights'):
            insights_section += f"\n\n💡 **Critical Insights**\n{mentor_insights['critical_insights']}"
        
        return f"{hf_response}{insights_section}"

    def _store_interaction(self, user_prompt: str, hf_response: str, mentor_insights: Dict):
        """Store interaction for learning and pattern recognition"""
        try:
            user_session = session_manager.get_session("default_user")
            interaction_log = user_session.get("interaction_log", [])
            
            # Create interaction record
            interaction = {
                "timestamp": time.time(),
                "user_prompt": user_prompt,
                "expert_response": hf_response,
                "mentor_insights": mentor_insights,
                "conversation_length": len(interaction_log)
            }
            
            # Keep last 20 interactions
            interaction_log.append(interaction)
            if len(interaction_log) > 20:
                interaction_log = interaction_log[-20:]
                
            user_session["interaction_log"] = interaction_log
            session_manager.update_session("default_user", user_session)
            
        except Exception as e:
            logger.warning(f"Failed to store interaction: {e}")

class ConversationAnalyzer:
    """Analyzes conversation patterns and provides insights"""
    
    def parse_mentor_response(self, mentor_response: str) -> Dict:
        """Parse mentor response into structured insights"""
        if not mentor_response:
            return {}
            
        insights = {}
        
        # Extract sections using simple parsing
        sections = {
            'thinking_analysis': self._extract_section(mentor_response, 'thinking_analysis'),
            'goal_progress': self._extract_section(mentor_response, 'goal_progress'),
            'follow_up_suggestions': self._extract_section(mentor_response, 'follow_up_suggestions'),
            'data_gathering': self._extract_section(mentor_response, 'data_gathering'),
            'critical_insights': self._extract_section(mentor_response, 'critical_insights')
        }
        
        # Clean up sections
        for key, value in sections.items():
            if value:
                # Remove markdown and clean text
                cleaned = value.strip()
                if cleaned:
                    insights[key] = cleaned
                    
        return insights
    
    def _extract_section(self, text: str, section_name: str) -> Optional[str]:
        """Extract specific section from mentor response"""
        start_tag = f"<{section_name}>"
        end_tag = f"</{section_name}>"
        
        start_idx = text.find(start_tag)
        if start_idx == -1:
            return None
            
        start_idx += len(start_tag)
        end_idx = text.find(end_tag, start_idx)
        
        if end_idx == -1:
            return None
            
        return text[start_idx:end_idx].strip()

# Global instance
mentor_provider = MentorProvider("mentor_model")