#!/usr/bin/env python3
"""
Database initialization script
Creates tables and optionally adds sample data
"""

import sys
import os

# Add the backend directory to the path so we can import our modules
sys.path.append(os.path.dirname(__file__))

from app.database import init_db, engine, SessionLocal
from app.models.user import User
from app.models.card import Card
from app.models.collection import Collection, CollectionCard
from app.models.deck import Deck, DeckCard
from sqlalchemy.orm import Session


def create_sample_user(db: Session):
    """Create a sample user for testing"""
    from app.routers.auth import hash_password
    
    # Check if user already exists
    existing_user = db.query(User).filter(User.username == "demo").first()
    if existing_user:
        print("Demo user already exists")
        return existing_user
    
    sample_user = User(
        email="demo@tcgvault.com",
        username="demo",
        hashed_password=hash_password("demo123"),
        full_name="Demo User",
        is_active=True,
        is_verified=True
    )
    
    db.add(sample_user)
    db.commit()
    db.refresh(sample_user)
    print(f"Created demo user: {sample_user.username}")
    return sample_user


def create_sample_cards(db: Session):
    """Create some sample cards for testing"""
    sample_cards = [
        {
            "name": "Lightning Bolt",
            "game": "MTG",
            "set_name": "Alpha",
            "set_code": "LEA",
            "rarity": "Common",
            "mana_cost": "{R}",
            "cmc": 1,
            "card_type": "Instant",
            "colors": ["Red"],
            "oracle_text": "Lightning Bolt deals 3 damage to any target.",
            "current_price": 15.99,
            "market_price": 14.50,
            "verified": True
        },
        {
            "name": "Black Lotus",
            "game": "MTG",
            "set_name": "Alpha",
            "set_code": "LEA",
            "rarity": "Rare",
            "mana_cost": "{0}",
            "cmc": 0,
            "card_type": "Artifact",
            "colors": [],
            "oracle_text": "{T}, Sacrifice Black Lotus: Add three mana of any one color.",
            "current_price": 25000.00,
            "market_price": 24500.00,
            "verified": True
        },
        {
            "name": "Pikachu",
            "game": "POKEMON",
            "set_name": "Base Set",
            "set_code": "BS1",
            "rarity": "Common",
            "card_type": "Pokemon",
            "oracle_text": "When several of these Pokemon gather, their electricity could build and cause lightning storms.",
            "current_price": 5.99,
            "market_price": 6.50,
            "verified": True
        }
    ]
    
    created_cards = []
    for card_data in sample_cards:
        # Check if card already exists
        existing_card = db.query(Card).filter(
            Card.name == card_data["name"],
            Card.set_name == card_data["set_name"]
        ).first()
        
        if not existing_card:
            card = Card(**card_data)
            db.add(card)
            db.commit()
            db.refresh(card)
            created_cards.append(card)
            print(f"Created sample card: {card.name}")
        else:
            created_cards.append(existing_card)
            print(f"Sample card already exists: {existing_card.name}")
    
    return created_cards


def create_sample_collection(db: Session, user: User, cards: list):
    """Create a sample collection with some cards"""
    # Check if collection already exists
    existing_collection = db.query(Collection).filter(
        Collection.owner_id == user.id,
        Collection.name == "My First Collection"
    ).first()
    
    if existing_collection:
        print("Sample collection already exists")
        return existing_collection
    
    collection = Collection(
        name="My First Collection",
        description="A starter collection with some classic cards",
        owner_id=user.id,
        is_public=True
    )
    
    db.add(collection)
    db.commit()
    db.refresh(collection)
    
    # Add some cards to the collection
    for i, card in enumerate(cards[:2]):  # Add first 2 cards
        collection_card = CollectionCard(
            collection_id=collection.id,
            card_id=card.id,
            quantity=1 if i == 0 else 2,  # Different quantities for variety
            condition="NM",
            foil=i == 1,  # Make one foil
            language="English"
        )
        db.add(collection_card)
    
    db.commit()
    print(f"Created sample collection: {collection.name}")
    return collection


def main():
    """Initialize the database and create sample data"""
    print("🚀 Initializing TCG Vault database...")
    
    # Create all tables
    init_db()
    print("✅ Database tables created")
    
    # Create sample data
    db = SessionLocal()
    try:
        print("\n📝 Creating sample data...")
        user = create_sample_user(db)
        cards = create_sample_cards(db)
        collection = create_sample_collection(db, user, cards)
        
        print("\n🎉 Database initialization complete!")
        print(f"   • Created user: {user.username}")
        print(f"   • Created {len(cards)} sample cards")
        print(f"   • Created collection: {collection.name}")
        print("\nYou can now start the API with: uvicorn main:app --reload")
        print("And test with the demo user credentials:")
        print("   Username: demo")
        print("   Password: demo123")
        
    except Exception as e:
        print(f"❌ Error creating sample data: {e}")
        db.rollback()
    finally:
        db.close()


if __name__ == "__main__":
    main()