"""
MTG Card Interaction Pipeline

Orchestrates the full interaction determination and recommendation pipeline.
Handles initial loads and rolling updates.
"""
import json
import logging
from datetime import datetime
from typing import List, Dict, Optional, Tuple

from sqlalchemy import create_engine, text
from sqlalchemy.orm import sessionmaker

from card_profile_extractor import CardProfileExtractor, CardProfile
from interaction_determinator import InteractionDeterminator, InteractionResult


# Configure logging
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)
logger = logging.getLogger(__name__)


class MTGInteractionPipeline:
    """
    Main pipeline for processing card interactions.
    
    Handles:
    1. Loading cards from database
    2. Extracting card profiles
    3. Determining interactions (synergies, counters, evolutions)
    4. Storing interactions in database
    5. Updating interaction statistics
    """
    
    def __init__(
        self,
        db_url: str,
        min_confidence: float = 0.5,
    ):
        """
        Initialize the pipeline.
        
        Args:
            db_url: PostgreSQL database URL
            min_confidence: Minimum confidence to auto-store interactions
        """
        self.db_url = db_url
        self.min_confidence = min_confidence
        self.engine = create_engine(db_url)
        self.SessionLocal = sessionmaker(bind=self.engine)
        
        self.profile_extractor = CardProfileExtractor()
        self.determinator = InteractionDeterminator()
        
        # Statistics
        self.stats = {
            'cards_processed': 0,
            'interactions_determined': 0,
            'interactions_stored': 0,
            'interactions_review_queue': 0,
            'errors': 0,
        }
    
    def load_cards_from_db(self, set_code: Optional[str] = None) -> List[Dict]:
        """
        Load cards from the database.
        
        Args:
            set_code: Optional set code to filter by
            
        Returns:
            List of card dictionaries
        """
        db = self.SessionLocal()
        try:
            if set_code:
                query = text("""
                    SELECT c.*, s.code as set_code, s.name as set_name
                    FROM mtg_cards c
                    JOIN mtg_sets s ON c.set_id = s.id
                    WHERE s.code = :set_code
                """)
                cards = [dict(row._mapping) for row in 
                    db.execute(query, {"set_code": set_code}).fetchall()]
            else:
                query = text("""
                    SELECT c.*, s.code as set_code, s.name as set_name
                    FROM mtg_cards c
                    JOIN mtg_sets s ON c.set_id = s.id
                """)
                cards = [dict(row._mapping) for row in db.execute(query).fetchall()]
            
            logger.info(f"Loaded {len(cards)} cards from database")
            return cards
        finally:
            db.close()
    
    def extract_profiles(self, cards: List[Dict]) -> List[CardProfile]:
        """
        Extract card profiles from card data.
        
        Args:
            cards: List of card dictionaries
            
        Returns:
            List of CardProfile objects
        """
        return self.profile_extractor.extract_profiles_batch(cards)
    
    def determine_interactions(self, profiles: List[CardProfile]) -> dict:
        """
        Determine interactions for a batch of card profiles.
        
        Args:
            profiles: List of CardProfile objects
            
        Returns:
            Dictionary with synergies, counters, and evolutions
        """
        return self.determinator.determine_all_interactions(profiles)
    
    def _determine_synergy_type(self, interaction: InteractionResult) -> str:
        """
        Determine synergy type from interaction metadata.
        
        Args:
            interaction: Interaction result
            
        Returns:
            Synergy type string
        """
        metadata = interaction.metadata or {}
        
        if 'common_archetypes' in metadata:
            return 'archetype'
        elif 'mechanics' in metadata:
            return 'mechanic'
        elif 'colors' in metadata:
            return 'mana'
        elif 'card_a_targets' in metadata:
            return 'combo'
        else:
            return 'support'
    
    def _determine_counter_type(self, interaction: InteractionResult) -> str:
        """
        Determine counter type from interaction metadata.
        
        Args:
            interaction: Interaction result
            
        Returns:
            Counter type string
        """
        metadata = interaction.metadata or {}
        
        if 'colors_a' in metadata:
            return 'color'
        elif 'power_a' in metadata:
            return 'stats'
        else:
            return 'keyword'
    
    def _determine_evolution_type(self, interaction: InteractionResult) -> str:
        """
        Determine evolution type from interaction metadata.
        
        Args:
            interaction: Interaction result
            
        Returns:
            Evolution type string
        """
        metadata = interaction.metadata or {}
        
        if 'card_name' in metadata:
            return 'reprint'
        else:
            return 'evolution'
    
    def store_interactions(self, interactions: dict) -> Tuple[int, int]:
        """
        Store interactions in the database.
        
        Args:
            interactions: Dictionary with synergies, counters, evolutions
            
        Returns:
            Tuple of (stored_count, review_queue_count)
        """
        db = self.SessionLocal()
        stored = 0
        review_queue = 0
        
        try:
            # Store synergies
            for interaction in interactions['synergies']:
                if interaction.confidence >= self.min_confidence:
                    synergy_type = self._determine_synergy_type(interaction)
                    db.execute(text("""
                        INSERT INTO mtg_card_synergies (
                            card_a_id, card_b_id, synergy_type, strength, notes, confidence
                        ) VALUES (
                            :card_a, :card_b, :synergy_type, :strength, :notes, :confidence
                        ) ON CONFLICT DO NOTHING
                    """), {
                        "card_a": interaction.card_a_id,
                        "card_b": interaction.card_b_id,
                        "synergy_type": synergy_type,
                        "strength": interaction.strength,
                        "notes": interaction.notes,
                        "confidence": interaction.confidence,
                    })
                    stored += 1
                else:
                    review_queue += 1
            
            # Store counters
            for interaction in interactions['counters']:
                if interaction.confidence >= self.min_confidence:
                    counter_type = self._determine_counter_type(interaction)
                    db.execute(text("""
                        INSERT INTO mtg_card_counters (
                            card_a_id, card_b_id, counter_type, strength, notes, confidence
                        ) VALUES (
                            :card_a, :card_b, :counter_type, :strength, :notes, :confidence
                        ) ON CONFLICT DO NOTHING
                    """), {
                        "card_a": interaction.card_a_id,
                        "card_b": interaction.card_b_id,
                        "counter_type": counter_type,
                        "strength": interaction.strength,
                        "notes": interaction.notes,
                        "confidence": interaction.confidence,
                    })
                    stored += 1
                else:
                    review_queue += 1
            
            # Store evolutions
            for interaction in interactions['evolutions']:
                if interaction.confidence >= self.min_confidence:
                    evolution_type = self._determine_evolution_type(interaction)
                    db.execute(text("""
                        INSERT INTO mtg_card_evolution (
                            card_id, evolved_card_id, evolution_type, strength, notes, confidence
                        ) VALUES (
                            :card_id, :evolved_card_id, :evolution_type, :strength, :notes, :confidence
                        ) ON CONFLICT DO NOTHING
                    """), {
                        "card_id": interaction.card_a_id,
                        "evolved_card_id": interaction.card_b_id,
                        "evolution_type": evolution_type,
                        "strength": interaction.strength,
                        "notes": interaction.notes,
                        "confidence": interaction.confidence,
                    })
                    stored += 1
                else:
                    review_queue += 1
            
            db.commit()
            logger.info(f"Stored {stored} interactions, {review_queue} sent to review queue")
            
        except Exception as e:
            db.rollback()
            logger.error(f"Error storing interactions: {e}")
            self.stats['errors'] += 1
        finally:
            db.close()
        
        return stored, review_queue
    
    def update_interaction_stats(self):
        """Update interaction statistics for all cards."""
        db = self.SessionLocal()
        try:
            # Delete existing stats
            db.execute(text("DELETE FROM mtg_card_interaction_stats"))
            
            # Recalculate stats
            db.execute(text("""
                INSERT INTO mtg_card_interaction_stats (
                    card_id, total_synergies, total_counters, total_evolutions,
                    total_synergy_strength, avg_synergy_strength
                )
                SELECT 
                    c.id,
                    COALESCE(synergies.synergy_count, 0),
                    COALESCE(counters.counter_count, 0),
                    COALESCE(evolution.evolution_count, 0),
                    COALESCE(synergies.total_strength, 0),
                    COALESCE(synergies.avg_strength, 0)
                FROM mtg_cards c
                LEFT JOIN (
                    SELECT card_a_id as card_id, COUNT(*) as synergy_count,
                           SUM(strength) as total_strength,
                           AVG(strength) as avg_strength
                    FROM mtg_card_synergies
                    GROUP BY card_a_id
                ) synergies ON c.id = synergies.card_id
                LEFT JOIN (
                    SELECT card_a_id as card_id, COUNT(*) as counter_count
                    FROM mtg_card_counters
                    GROUP BY card_a_id
                ) counters ON c.id = counters.card_id
                LEFT JOIN (
                    SELECT card_id as card_id, COUNT(*) as evolution_count
                    FROM mtg_card_evolution
                    GROUP BY card_id
                ) evolution ON c.id = evolution.card_id
            """))
            
            db.commit()
            logger.info("Updated interaction statistics")
            
        except Exception as e:
            db.rollback()
            logger.error(f"Error updating interaction stats: {e}")
            self.stats['errors'] += 1
        finally:
            db.close()
    
    def run_initial_load(self, set_code: Optional[str] = None):
        """
        Run initial load for all cards or a specific set.
        
        This is used for the first time data is loaded into the database.
        
        Args:
            set_code: Optional set code to process
        """
        logger.info("=" * 60)
        logger.info("Starting Initial Load")
        logger.info("=" * 60)
        
        # Load all cards
        all_cards = self.load_cards_from_db(set_code)
        
        if not all_cards:
            logger.warning("No cards found in database")
            return
        
        # Extract profiles
        logger.info(f"Extracting profiles for {len(all_cards)} cards...")
        profiles = self.extract_profiles(all_cards)
        
        # Determine interactions
        logger.info(f"Determining interactions for {len(profiles)} cards...")
        interactions = self.determine_interactions(profiles)
        
        logger.info(
            f"Determined {len(interactions['synergies'])} synergies, "
            f"{len(interactions['counters'])} counters, "
            f"{len(interactions['evolutions'])} evolutions"
        )
        
        # Store interactions
        stored, review_queue = self.store_interactions(interactions)
        
        # Update statistics
        self.update_interaction_stats()
        
        # Update stats
        self.stats['cards_processed'] = len(all_cards)
        self.stats['interactions_determined'] = len(interactions['synergies']) + len(interactions['counters']) + len(interactions['evolutions'])
        self.stats['interactions_stored'] = stored
        self.stats['interactions_review_queue'] = review_queue
        
        logger.info("=" * 60)
        logger.info(f"Initial Load Complete")
        logger.info(f"  Cards processed: {self.stats['cards_processed']}")
        logger.info(f"  Interactions determined: {self.stats['interactions_determined']}")
        logger.info(f"  Interactions stored: {self.stats['interactions_stored']}")
        logger.info(f"  Interactions in review queue: {self.stats['interactions_review_queue']}")
        logger.info("=" * 60)
    
    def run_rolling_update(self, new_cards: List[Dict], set_code: Optional[str] = None):
        """
        Run rolling update for new cards.
        
        This is used when new cards are added via MTGJSON updates.
        
        Args:
            new_cards: List of new card dictionaries
            set_code: Optional set code
        """
        logger.info("=" * 60)
        logger.info("Starting Rolling Update")
        logger.info(f"New cards: {len(new_cards)}")
        logger.info("=" * 60)
        
        # Load existing cards
        existing_cards = self.load_cards_from_db(set_code)
        
        # Combine existing and new cards
        all_cards = existing_cards + new_cards
        
        # Extract profiles
        logger.info(f"Extracting profiles for {len(all_cards)} cards...")
        profiles = self.extract_profiles(all_cards)
        
        # Determine interactions
        logger.info(f"Determining interactions for {len(profiles)} cards...")
        interactions = self.determine_interactions(profiles)
        
        logger.info(
            f"Determined {len(interactions['synergies'])} synergies, "
            f"{len(interactions['counters'])} counters, "
            f"{len(interactions['evolutions'])} evolutions"
        )
        
        # Store interactions
        stored, review_queue = self.store_interactions(interactions)
        
        # Update statistics
        self.update_interaction_stats()
        
        # Update stats
        self.stats['cards_processed'] = len(new_cards)
        self.stats['interactions_determined'] = len(interactions['synergies']) + len(interactions['counters']) + len(interactions['evolutions'])
        self.stats['interactions_stored'] = stored
        self.stats['interactions_review_queue'] = review_queue
        
        logger.info("=" * 60)
        logger.info(f"Rolling Update Complete")
        logger.info(f"  New cards processed: {self.stats['cards_processed']}")
        logger.info(f"  Interactions determined: {self.stats['interactions_determined']}")
        logger.info(f"  Interactions stored: {self.stats['interactions_stored']}")
        logger.info(f"  Interactions in review queue: {self.stats['interactions_review_queue']}")
        logger.info("=" * 60)
    
    def get_pipeline_stats(self) -> Dict:
        """Get pipeline statistics."""
        return {
            **self.stats,
            'timestamp': datetime.now().isoformat(),
        }
    
    def close(self):
        """Close database connection."""
        self.engine.dispose()


def main():
    """Main entry point for pipeline execution."""
    import sys
    
    # Database URL from environment or default
    db_url = "postgresql+psycopg2://mtgonline:mtgonline_pass@172.18.0.2:5432/mtgdata"
    
    # Get command line arguments
    if len(sys.argv) < 2:
        print("Usage: python pipeline.py [initial|rolling] [set_code]")
        print("  initial: Run initial load for all cards or a specific set")
        print("  rolling: Run rolling update for new cards (requires JSON input)")
        sys.exit(1)
    
    command = sys.argv[1]
    set_code = sys.argv[2] if len(sys.argv) > 2 else None
    
    # Initialize pipeline
    pipeline = MTGInteractionPipeline(db_url)
    
    try:
        if command == "initial":
            pipeline.run_initial_load(set_code)
        elif command == "rolling":
            # Read new cards from stdin (JSON)
            new_cards = json.loads(sys.stdin.read())
            pipeline.run_rolling_update(new_cards, set_code)
        else:
            print(f"Unknown command: {command}")
            sys.exit(1)
        
        # Print statistics
        stats = pipeline.get_pipeline_stats()
        print("\nPipeline Statistics:")
        for key, value in stats.items():
            print(f"  {key}: {value}")
    
    finally:
        pipeline.close()


if __name__ == "__main__":
    main()