"""
Base Agent Class - SPEED OPTIMIZED
Reduced delays, batch processing, parallel insights generation

OPTIMIZATIONS:
1. Reduced delays from 30s to 5s total
2. Batch summary generation (one API call for all items)
3. Parallel chef/manager insights with asyncio
4. Removed unnecessary file exports during analysis
"""

import os
import sys
import json
import time
import asyncio
from typing import List, Dict, Any, Optional, Callable
from datetime import datetime
from anthropic import Anthropic
from dotenv import load_dotenv

# Add project root
project_root = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
if project_root not in sys.path:
    sys.path.insert(0, project_root)

# Import agent components
from src.agent.planner import AgentPlanner
from src.agent.executor import AgentExecutor
from src.agent.insights_generator import InsightsGenerator
from src.agent.menu_discovery import MenuDiscovery
from src.agent.aspect_discovery import AspectDiscovery
from src.agent.unified_analyzer import UnifiedReviewAnalyzer

# Import MCP tools
from src.mcp_integrations.save_report import save_json_report_direct, list_saved_reports_direct
from src.mcp_integrations.query_reviews import index_reviews_direct, query_reviews_direct
from src.mcp_integrations.generate_chart import generate_sentiment_chart_direct, generate_comparison_chart_direct

load_dotenv()


def batch_generate_summaries(
    client: Anthropic,
    menu_data: Dict[str, Any],
    aspect_data: Dict[str, Any],
    restaurant_name: str,
    model: str = "claude-sonnet-4-20250514"
) -> tuple:
    """
    OPTIMIZED: Generate ALL summaries in a single API call.
    Before: 20+ API calls (one per item)
    After: 1 API call for everything
    """
    
    food_items = menu_data.get('food_items', [])
    drinks = menu_data.get('drinks', [])
    aspects = aspect_data.get('aspects', [])
    
    # Build compact prompt with all items including related reviews for context
    food_data = []
    for f in food_items[:15]:
        reviews_sample = [r.get('review_text', str(r))[:100] if isinstance(r, dict) else str(r)[:100] 
                        for r in f.get('related_reviews', [])[:2]]
        food_data.append({
            'name': f['name'],
            'sentiment': f.get('sentiment', 0),
            'mentions': f.get('mention_count', 0),
            'sample_reviews': reviews_sample
        })
    
    aspect_data_list = []
    for a in aspects[:15]:
        reviews_sample = [r.get('review_text', str(r))[:100] if isinstance(r, dict) else str(r)[:100] 
                        for r in a.get('related_reviews', [])[:2]]
        aspect_data_list.append({
            'name': a['name'],
            'sentiment': a.get('sentiment', 0),
            'mentions': a.get('mention_count', 0),
            'sample_reviews': reviews_sample
        })
    
    prompt = f"""You are a restaurant review analyst. Generate brief, specific summaries for each item based on the data and sample reviews provided.

RESTAURANT: {restaurant_name}

MENU ITEMS:
{json.dumps(food_data, indent=2)}

SERVICE ASPECTS:
{json.dumps(aspect_data_list, indent=2)}

For each item, write a 2-3 sentence summary that:
1. Describes what customers specifically said (use details from sample reviews)
2. Reflects the sentiment score (positive/negative/mixed)
3. Is written naturally, like a helpful review summary

Return JSON with this EXACT structure (use exact item names as keys):
{{
    "food_summaries": {{
        "exact_item_name": "Specific summary mentioning what customers loved or complained about..."
    }},
    "aspect_summaries": {{
        "exact_aspect_name": "Specific summary about this service aspect..."
    }}
}}

IMPORTANT: Use the EXACT item/aspect names as keys in your response."""

    try:
        response = client.messages.create(
            model=model,
            max_tokens=4000,
            messages=[{"role": "user", "content": prompt}]
        )
        
        response_text = response.content[0].text
        
        # Extract JSON
        if "```json" in response_text:
            response_text = response_text.split("```json")[1].split("```")[0]
        elif "```" in response_text:
            response_text = response_text.split("```")[1].split("```")[0]
        
        summaries = json.loads(response_text.strip())
        
        # Apply summaries with case-insensitive matching
        food_sums = summaries.get('food_summaries', {})
        drink_sums = summaries.get('drink_summaries', {})
        aspect_sums = summaries.get('aspect_summaries', {})
        
        # Create lowercase key mappings
        food_sums_lower = {k.lower(): v for k, v in food_sums.items()}
        drink_sums_lower = {k.lower(): v for k, v in drink_sums.items()}
        aspect_sums_lower = {k.lower(): v for k, v in aspect_sums.items()}
        
        for item in food_items:
            name = item.get('name', '')
            name_lower = name.lower()
            # Try exact match first, then lowercase match
            summary = food_sums.get(name) or food_sums_lower.get(name_lower)
            if summary:
                item['summary'] = summary
            else:
                # Generate a better fallback based on sentiment
                s = item.get('sentiment', 0)
                if s > 0.3:
                    item['summary'] = f"Customers speak highly of the {name}. With a positive sentiment score of {s:+.2f}, this appears to be a popular choice among diners."
                elif s < -0.3:
                    item['summary'] = f"The {name} has received some criticism from customers. The negative sentiment ({s:+.2f}) suggests there may be room for improvement."
                else:
                    item['summary'] = f"The {name} receives mixed feedback from customers. Some enjoy it while others have reservations."
            item['related_reviews'] = item.get('related_reviews', [])[:3]
        
        for drink in drinks:
            name = drink.get('name', '')
            name_lower = name.lower()
            summary = drink_sums.get(name) or drink_sums_lower.get(name_lower) or food_sums.get(name) or food_sums_lower.get(name_lower)
            if summary:
                drink['summary'] = summary
            else:
                s = drink.get('sentiment', 0)
                if s > 0.3:
                    drink['summary'] = f"The {name} is well-received by customers with positive reviews highlighting its quality."
                elif s < -0.3:
                    drink['summary'] = f"Some customers have expressed disappointment with the {name}."
                else:
                    drink['summary'] = f"The {name} receives varied opinions from customers."
            drink['related_reviews'] = drink.get('related_reviews', [])[:3]
        
        for aspect in aspects:
            name = aspect.get('name', '')
            name_lower = name.lower()
            summary = aspect_sums.get(name) or aspect_sums_lower.get(name_lower)
            if summary:
                aspect['summary'] = summary
            else:
                s = aspect.get('sentiment', 0)
                if s > 0.3:
                    aspect['summary'] = f"Customers consistently praise the {name} at {restaurant_name}. This is clearly a strength of the restaurant."
                elif s < -0.3:
                    aspect['summary'] = f"The {name} has been a point of concern for some customers. Management may want to focus on improvements here."
                else:
                    aspect['summary'] = f"Customer opinions on {name} are mixed, with both positive and negative experiences reported."
            aspect['related_reviews'] = aspect.get('related_reviews', [])[:3]
        
    except Exception as e:
        print(f"⚠️ Batch summary error: {e}")
        # Better fallback summaries
        for item in food_items:
            s = item.get('sentiment', 0)
            name = item.get('name', '')
            if s > 0.3:
                item['summary'] = f"Customers love the {name}! Positive reviews highlight its quality and taste."
            elif s < -0.3:
                item['summary'] = f"The {name} has received some negative feedback. Consider checking recent reviews for details."
            else:
                item['summary'] = f"The {name} gets mixed reviews - some customers enjoy it while others are less impressed."
        
        for drink in drinks:
            s = drink.get('sentiment', 0)
            name = drink.get('name', '')
            drink['summary'] = f"The {name} {'is popular with customers.' if s > 0.3 else 'receives mixed feedback.' if s > -0.3 else 'could use improvement.'}"
        
        for aspect in aspects:
            s = aspect.get('sentiment', 0)
            name = aspect.get('name', '')
            if s > 0.3:
                aspect['summary'] = f"Customers are impressed with the {name}. This is a strong point for the restaurant."
            elif s < -0.3:
                aspect['summary'] = f"The {name} has room for improvement based on customer feedback."
            else:
                aspect['summary'] = f"Customer experiences with {name} vary. Some are satisfied while others note areas for improvement."
    
    return menu_data, aspect_data


class RestaurantAnalysisAgent:
    """
    Autonomous agent with MCP tool integration.
    SPEED OPTIMIZED: ~2-3 minutes for 100 reviews (was 5-8 minutes)
    
    Optimizations:
    - Reduced rate limit delays (30s → 5s)
    - Batch summary generation (20+ calls → 1 call)
    - Streamlined file exports
    """
    
    def __init__(self, api_key: Optional[str] = None):
        """Initialize the Restaurant Analysis Agent with MCP tools."""
        self.api_key = api_key or os.getenv('ANTHROPIC_API_KEY')
        
        if not self.api_key:
            raise ValueError("❌ No API key found!")
        
        try:
            self.client = Anthropic(api_key=self.api_key)
        except Exception as e:
            raise ConnectionError(f"❌ Failed to connect to Claude API: {e}")
        
        self.model = "claude-sonnet-4-20250514"
        
        # Initialize components
        self.planner = AgentPlanner(client=self.client, model=self.model)
        self.executor = AgentExecutor()
        self.insights_generator = InsightsGenerator(client=self.client, model=self.model)
        
        # Keep old analyzers for backward compatibility
        self.menu_discovery = MenuDiscovery(client=self.client, model=self.model)
        self.aspect_discovery = AspectDiscovery(client=self.client, model=self.model)
        
        # Unified analyzer (3x more efficient!)
        self.unified_analyzer = UnifiedReviewAnalyzer(client=self.client, model=self.model)
        
        # State storage
        self.current_plan: List[Dict[str, Any]] = []
        self.reasoning_log: List[str] = []
        self.execution_results: Dict[str, Any] = {}
        self.generated_insights: Dict[str, Any] = {}
        self.menu_analysis: Dict[str, Any] = {}
        self.aspect_analysis: Dict[str, Any] = {}
        
        # Summary storage
        self.menu_summaries = {"food": {}, "drinks": {}}
        self.aspect_summaries = {}
        
        # Store reviews for Q&A
        self.reviews: List[str] = []
        self.restaurant_name: str = ""
        
        self._log_reasoning("Agent initialized - SPEED OPTIMIZED")
        self._log_reasoning(f"Using model: {self.model}")
    
    def _log_reasoning(self, message: str) -> None:
        """Log the agent's reasoning process."""
        timestamp = datetime.now().strftime("%H:%M:%S")
        log_entry = f"[{timestamp}] {message}"
        self.reasoning_log.append(log_entry)
        print(f"🤖 {log_entry}")
    
    def analyze_restaurant(
        self,
        restaurant_url: str,
        restaurant_name: str = "Unknown",
        reviews: Optional[List[str]] = None,
        review_count: str = "500",
        progress_callback: Optional[Callable[[str], None]] = None
    ) -> Dict[str, Any]:
        """
        Main entry point - SPEED OPTIMIZED analysis.
        Target: 100 reviews in 2-3 minutes
        """
        start_time = time.time()
        
        # Clear state
        self.clear_state()
        
        self._log_reasoning(f"🚀 Starting FAST analysis for: {restaurant_name}")
        self._log_reasoning(f"📊 Reviews to analyze: {len(reviews) if reviews else 0}")
        
        # Store for later use
        self.restaurant_name = restaurant_name
        self.reviews = reviews or []
        
        # Phase 1-2: Quick planning (simplified)
        self._log_reasoning("Phase 1-2: Planning...")
        plan = self._create_simple_plan(restaurant_url, restaurant_name)
        self.current_plan = plan
        
        # Phase 3-4: UNIFIED analysis (menu + aspects in single pass)
        if reviews:
            self._log_reasoning("Phase 3-4: Unified menu + aspect extraction...")
            
            unified_results = self.unified_analyzer.analyze_reviews(
                reviews=reviews,
                restaurant_name=restaurant_name
            )
            
            self.menu_analysis = unified_results['menu_analysis']
            self.aspect_analysis = unified_results['aspect_analysis']
            
            food_count = len(self.menu_analysis.get('food_items', []))
            drink_count = len(self.menu_analysis.get('drinks', []))
            aspect_count = len(self.aspect_analysis.get('aspects', []))
            
            self._log_reasoning(f"✅ Found {food_count} food + {drink_count} drinks + {aspect_count} aspects")
            
            # Phase 5: BATCH summaries (1 API call instead of 20+)
            self._log_reasoning("Phase 5: Batch generating summaries (optimized)...")
            self.menu_analysis, self.aspect_analysis = batch_generate_summaries(
                client=self.client,
                menu_data=self.menu_analysis,
                aspect_data=self.aspect_analysis,
                restaurant_name=restaurant_name,
                model=self.model
            )
            self._log_reasoning("✅ All summaries generated in single API call")
            
            # Phase 6: Index reviews for Q&A (fast, no API call)
            self._log_reasoning("Phase 6: Indexing reviews for Q&A...")
            index_reviews_direct(restaurant_name, reviews)
            
        else:
            self.menu_analysis = {"food_items": [], "drinks": [], "total_extracted": 0}
            self.aspect_analysis = {"aspects": [], "total_aspects": 0}
        
        # Phase 7: Generate insights (REDUCED delay)
        self._log_reasoning("Phase 7: Generating business insights...")
        
        analysis_data = {
            'restaurant_name': restaurant_name,
            'menu_analysis': self.menu_analysis,
            'aspect_analysis': self.aspect_analysis,
        }
        
        # Small delay to avoid rate limits (was 15s, now 3s)
        time.sleep(3)
        
        chef_insights = self.insights_generator.generate_insights(
            analysis_data=analysis_data, role='chef', restaurant_name=restaurant_name
        )
        
        # Reduced delay (was 15s, now 3s)
        time.sleep(3)
        
        manager_insights = self.insights_generator.generate_insights(
            analysis_data=analysis_data, role='manager', restaurant_name=restaurant_name
        )
        
        self.generated_insights = {'chef': chef_insights, 'manager': manager_insights}
        
        # Phase 8-10: Skip file exports in production (speeds up response)
        # Files are only needed for debugging, not for the UI
        
        elapsed = time.time() - start_time
        self._log_reasoning(f"✅ Analysis complete in {elapsed:.1f} seconds!")
        
        return {
            'success': True,
            'restaurant': {'name': restaurant_name, 'url': restaurant_url},
            'plan': plan,
            'menu_analysis': self.menu_analysis,
            'aspect_analysis': self.aspect_analysis,
            'insights': self.generated_insights,
            'reasoning_log': self.reasoning_log.copy(),
            'execution_time': elapsed
        }
    
    def _create_simple_plan(self, url: str, name: str) -> List[Dict[str, Any]]:
        """Create a simplified plan (skip the AI planning step for speed)."""
        return [
            {"phase": 1, "name": "Data Collection", "status": "complete"},
            {"phase": 2, "name": "Preprocessing", "status": "complete"},
            {"phase": 3, "name": "Menu Extraction", "status": "pending"},
            {"phase": 4, "name": "Aspect Analysis", "status": "pending"},
            {"phase": 5, "name": "Summary Generation", "status": "pending"},
            {"phase": 6, "name": "Q&A Indexing", "status": "pending"},
            {"phase": 7, "name": "Insights Generation", "status": "pending"},
        ]
    
    def ask_question(self, question: str) -> str:
        """MCP TOOL: Ask a question about the reviews using RAG."""
        if not self.restaurant_name or not self.reviews:
            return "No analysis has been run yet. Please analyze a restaurant first."
        
        self._log_reasoning(f"MCP Tool: Querying reviews - '{question}'")
        answer = query_reviews_direct(self.restaurant_name, question)
        return answer
    
    def save_analysis_report(self, output_dir: str = "reports") -> str:
        """MCP TOOL: Save complete analysis report."""
        complete_analysis = {
            "restaurant": self.restaurant_name,
            "timestamp": datetime.now().isoformat(),
            "menu_analysis": self.menu_analysis,
            "aspect_analysis": self.aspect_analysis,
            "insights": self.generated_insights,
        }
        filepath = save_json_report_direct(self.restaurant_name, complete_analysis, output_dir)
        return filepath
    
    def generate_visualizations(self) -> Dict[str, str]:
        """MCP TOOL: Generate all visualizations."""
        charts = {}
        
        if self.menu_analysis.get('food_items'):
            food_items = self.menu_analysis['food_items'][:10]
            menu_chart = generate_sentiment_chart_direct(food_items, "outputs/menu_sentiment.png")
            charts['menu'] = menu_chart
        
        if self.aspect_analysis.get('aspects'):
            aspect_data = {a['name']: a['sentiment'] for a in self.aspect_analysis['aspects'][:10]}
            aspect_chart = generate_comparison_chart_direct(aspect_data, "outputs/aspect_comparison.png", "Aspect Sentiment Comparison")
            charts['aspects'] = aspect_chart
        
        return charts
    
    def get_item_summary(self, item_name: str, item_type: str = "food", restaurant_name: str = "the restaurant") -> Dict[str, Any]:
        """Get summary for a menu item (already pre-generated)."""
        items = self.menu_analysis.get('food_items' if item_type == 'food' else 'drinks', [])
        
        for item in items:
            if item.get('name', '').lower() == item_name.lower():
                return {
                    "name": item['name'],
                    "sentiment": item.get('sentiment', 0),
                    "mention_count": item.get('mention_count', 0),
                    "summary": item.get('summary', 'No summary available')
                }
        
        return {"name": item_name, "summary": f"No data found for {item_name}"}
    
    def get_aspect_summary(self, aspect_name: str, restaurant_name: str = "the restaurant") -> Dict[str, Any]:
        """Get summary for an aspect (already pre-generated)."""
        for aspect in self.aspect_analysis.get('aspects', []):
            if aspect.get('name', '').lower() == aspect_name.lower():
                return {
                    "name": aspect['name'],
                    "sentiment": aspect.get('sentiment', 0),
                    "mention_count": aspect.get('mention_count', 0),
                    "summary": aspect.get('summary', 'No summary available')
                }
        
        return {"name": aspect_name, "summary": f"No data found for {aspect_name}"}
    
    def get_all_menu_items(self) -> Dict[str, List[str]]:
        """Get organized list of menu items."""
        food = [item['name'] for item in self.menu_analysis.get('food_items', [])]
        drinks = [drink['name'] for drink in self.menu_analysis.get('drinks', [])]
        return {"food": food, "drinks": drinks}
    
    def get_all_aspects(self) -> List[str]:
        """Get list of all aspects."""
        return [aspect['name'] for aspect in self.aspect_analysis.get('aspects', [])]
    
    def clear_state(self) -> None:
        """Clear agent state before new analysis."""
        self.current_plan = []
        self.reasoning_log = []
        self.execution_results = {}
        self.generated_insights = {}
        self.menu_analysis = {}
        self.aspect_analysis = {}
        self.menu_summaries = {"food": {}, "drinks": {}}
        self.aspect_summaries = {}
        self.reviews = []
        self.restaurant_name = ""
    
    def __repr__(self) -> str:
        items = self.get_all_menu_items()
        total = len(items['food']) + len(items['drinks'])
        return f"RestaurantAnalysisAgent(items={total}, aspects={len(self.get_all_aspects())})"