"""
Deck models for deck building and management
"""

from sqlalchemy import Column, Integer, String, DateTime, Boolean, ForeignKey, Text, Float
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from app.database import Base


class Deck(Base):
    __tablename__ = "decks"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String, nullable=False)
    description = Column(Text)
    format = Column(String)  # Standard, Modern, Legacy, Commander, etc.
    game = Column(String, nullable=False)  # MTG, Pokemon, YuGiOh, etc.
    
    # Deck status and sharing
    is_public = Column(Boolean, default=False)
    is_complete = Column(Boolean, default=False)
    is_favorite = Column(Boolean, default=False)
    
    # Commander/Partner info (for MTG)
    commander_card_id = Column(Integer, ForeignKey("cards.id"))
    partner_card_id = Column(Integer, ForeignKey("cards.id"))
    
    # Deck statistics
    total_cards = Column(Integer, default=0)
    avg_mana_cost = Column(Float)
    estimated_value = Column(Float)
    
    # AI and optimization data
    ai_suggestions = Column(Text)  # JSON string of AI suggestions
    win_rate = Column(Float)  # If user tracks games
    last_played = Column(DateTime)
    
    # Ownership
    owner_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    
    # Metadata
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

    # Relationships
    owner = relationship("User", back_populates="decks")
    commander = relationship("Card", foreign_keys=[commander_card_id])
    partner = relationship("Card", foreign_keys=[partner_card_id])
    deck_cards = relationship("DeckCard", back_populates="deck", cascade="all, delete-orphan")

    @property
    def mainboard_cards(self):
        """Get only mainboard cards"""
        return [dc for dc in self.deck_cards if not dc.is_sideboard]

    @property
    def sideboard_cards(self):
        """Get only sideboard cards"""
        return [dc for dc in self.deck_cards if dc.is_sideboard]

    def calculate_stats(self):
        """Calculate deck statistics"""
        mainboard = self.mainboard_cards
        if not mainboard:
            return
        
        # Total cards
        self.total_cards = sum(dc.quantity for dc in mainboard)
        
        # Average mana cost
        total_cmc = sum(dc.card.cmc * dc.quantity for dc in mainboard if dc.card.cmc)
        self.avg_mana_cost = total_cmc / self.total_cards if self.total_cards > 0 else 0
        
        # Estimated value
        total_value = 0
        for dc in self.deck_cards:
            if dc.card.current_price:
                total_value += dc.card.current_price * dc.quantity
        self.estimated_value = total_value

    def __repr__(self):
        return f"<Deck(id={self.id}, name='{self.name}', format='{self.format}')>"


class DeckCard(Base):
    __tablename__ = "deck_cards"

    id = Column(Integer, primary_key=True, index=True)
    deck_id = Column(Integer, ForeignKey("decks.id"), nullable=False)
    card_id = Column(Integer, ForeignKey("cards.id"), nullable=False)
    
    # Deck composition
    quantity = Column(Integer, default=1)
    is_sideboard = Column(Boolean, default=False)
    is_commander = Column(Boolean, default=False)  # For commander format
    
    # Card preferences
    preferred_printing = Column(String)  # Specific set preference
    foil_preference = Column(Boolean, default=False)
    
    # Deck building notes
    category = Column(String)  # Removal, Ramp, Win-con, etc.
    notes = Column(Text)
    ai_suggestion = Column(Boolean, default=False)  # Was this card suggested by AI?
    
    # Ownership tracking
    owned = Column(Boolean, default=False)  # Does user own this card?
    need_to_acquire = Column(Boolean, default=True)
    
    # Metadata
    added_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

    # Relationships
    deck = relationship("Deck", back_populates="deck_cards")
    card = relationship("Card", back_populates="deck_cards")

    def __repr__(self):
        return f"<DeckCard(deck_id={self.deck_id}, card_id={self.card_id}, quantity={self.quantity})>"