"""
Insight Generator module for VoxPop.
Generates structured insights from analyzed perspective data.
"""

import logging
import json
from typing import Dict, List, Any
import time
import os
from datetime import datetime

logger = logging.getLogger(__name__)

class InsightGenerator:
    """
    Generates structured insights from analyzed perspective data.
    """
    
    def __init__(self, output_dir: str = "insights"):
        """
        Initialize the insight generator.
        
        Args:
            output_dir: Directory to store generated insights
        """
        self.output_dir = output_dir
        os.makedirs(output_dir, exist_ok=True)
        logger.info(f"Insight generator initialized with output directory: {output_dir}")
    
    def generate_insights(self, analysis_results: Dict[str, Any]) -> Dict[str, Any]:
        """
        Generate structured insights from analysis results.
        
        Args:
            analysis_results: Results from the analyzer
            
        Returns:
            Structured insights
        """
        logger.info("Generating insights from analysis results")
        
        # Extract insights from analysis results
        raw_insights = analysis_results.get("insights", [])
        
        # Format insights and filter out low confidence ones
        structured_insights = []
        
        for insight in raw_insights:
            summary = insight.get("summary", "")
            confidence = insight.get("confidence", 0.0)
            
            # Filter out low confidence insights
            if confidence < 0.05:
                continue
                
            structured_insights.append({
                "summary": summary,
                "confidence": confidence,
                "timestamp": datetime.now().isoformat()
            })
        
        # Save insights to file
        timestamp = int(time.time())
        output_path = os.path.join(self.output_dir, f"insights_{timestamp}.json")
        
        insights_data = {
            "insights": structured_insights,
            "metadata": {
                "timestamp": timestamp,
                "perspective_count": len(analysis_results.get("perspectives", [])),
                "generated_at": datetime.now().isoformat()
            }
        }
        
        try:
            with open(output_path, 'w') as f:
                json.dump(insights_data, f, indent=2)
            logger.info(f"Insights saved to {output_path}")
        except Exception as e:
            logger.error(f"Error saving insights to file: {e}")
        
        return insights_data
    
    def get_recent_insights(self, count: int = 10) -> List[Dict[str, Any]]:
        """
        Get the most recent insights.
        
        Args:
            count: Number of recent insight files to retrieve
            
        Returns:
            List of insight dictionaries
        """
        insights = []
        
        try:
            # Get all insight files
            files = [os.path.join(self.output_dir, f) for f in os.listdir(self.output_dir) 
                     if f.startswith("insights_") and f.endswith(".json")]
            
            # Sort by modification time (most recent first)
            files.sort(key=lambda x: os.path.getmtime(x), reverse=True)
            
            # Load the most recent files
            for file_path in files[:count]:
                try:
                    with open(file_path, 'r') as f:
                        data = json.load(f)
                        insights.append(data)
                except Exception as e:
                    logger.error(f"Error loading insight file {file_path}: {e}")
        
        except Exception as e:
            logger.error(f"Error retrieving recent insights: {e}")
        
        return insights
    
    def get_consolidated_insights(self, days: int = 1) -> Dict[str, Any]:
        """
        Consolidate insights from a recent time period.
        
        Args:
            days: Number of days to look back
            
        Returns:
            Consolidated insights
        """
        # Get all insight files
        all_insights = []
        cutoff_time = time.time() - (days * 24 * 60 * 60)
        
        try:
            files = [os.path.join(self.output_dir, f) for f in os.listdir(self.output_dir) 
                     if f.startswith("insights_") and f.endswith(".json")]
            
            for file_path in files:
                # Check if file is within the time period
                if os.path.getmtime(file_path) >= cutoff_time:
                    try:
                        with open(file_path, 'r') as f:
                            data = json.load(f)
                            all_insights.extend(data.get("insights", []))
                    except Exception as e:
                        logger.error(f"Error loading insight file {file_path}: {e}")
        except Exception as e:
            logger.error(f"Error consolidating insights: {e}")
        
        # Group similar insights (simplified approach)
        consolidated = {}
        
        for insight in all_insights:
            summary = insight.get("summary", "")
            
            # Use first few words as a key to group similar insights
            key_words = " ".join(summary.split()[:3])
            
            if key_words in consolidated:
                # Update confidence with max value
                consolidated[key_words]["confidence"] = max(
                    consolidated[key_words]["confidence"],
                    insight.get("confidence", 0.0)
                )
                consolidated[key_words]["count"] += 1
            else:
                consolidated[key_words] = {
                    "summary": summary,
                    "confidence": insight.get("confidence", 0.0),
                    "count": 1,
                    "last_seen": insight.get("timestamp", datetime.now().isoformat())
                }
        
        # Convert to list and sort by confidence
        result = list(consolidated.values())
        result.sort(key=lambda x: x["confidence"], reverse=True)
        
        return {
            "consolidated_insights": result,
            "metadata": {
                "period_days": days,
                "total_insights": len(all_insights),
                "consolidated_count": len(result),
                "generated_at": datetime.now().isoformat()
            }
        }