import sys
import os
from pathlib import Path
sys.path.insert(0, str(Path(__file__).parent.parent))
from sqlalchemy.orm import Session
from src.shared.config.database import SessionLocal
from src.models.loyalty_reward import LoyaltyReward, RewardType
from src.models.loyalty_tier import LoyaltyTier, TierLevel
from datetime import datetime, timedelta

def get_db():
    db = SessionLocal()
    try:
        return db
    finally:
        pass

def seed_loyalty_rewards(db: Session):
    print('=' * 80)
    print('SEEDING LOYALTY REWARDS')
    print('=' * 80)
    
    # Get tier IDs for tier-specific rewards
    bronze_tier = db.query(LoyaltyTier).filter(LoyaltyTier.level == TierLevel.bronze).first()
    silver_tier = db.query(LoyaltyTier).filter(LoyaltyTier.level == TierLevel.silver).first()
    gold_tier = db.query(LoyaltyTier).filter(LoyaltyTier.level == TierLevel.gold).first()
    platinum_tier = db.query(LoyaltyTier).filter(LoyaltyTier.level == TierLevel.platinum).first()
    
    # Create default tiers if they don't exist
    if not bronze_tier:
        from src.services.loyalty_service import LoyaltyService
        LoyaltyService.create_default_tiers(db)
        db.refresh()
        bronze_tier = db.query(LoyaltyTier).filter(LoyaltyTier.level == TierLevel.bronze).first()
        silver_tier = db.query(LoyaltyTier).filter(LoyaltyTier.level == TierLevel.silver).first()
        gold_tier = db.query(LoyaltyTier).filter(LoyaltyTier.level == TierLevel.gold).first()
        platinum_tier = db.query(LoyaltyTier).filter(LoyaltyTier.level == TierLevel.platinum).first()
    
    # Sample rewards data
    rewards_data = [
        # Discount Rewards (Available to all tiers)
        {
            'name': '5% Booking Discount',
            'description': 'Get 5% off your next booking. Valid for bookings over $100.',
            'reward_type': RewardType.discount,
            'points_cost': 5000,
            'discount_percentage': 5.0,
            'max_discount_amount': 50.0,
            'min_booking_amount': 100.0,
            'applicable_tier_id': None,  # Available to all tiers
            'stock_quantity': None,  # Unlimited
            'icon': '🎫',
            'is_active': True
        },
        {
            'name': '10% Booking Discount',
            'description': 'Get 10% off your next booking. Valid for bookings over $200.',
            'reward_type': RewardType.discount,
            'points_cost': 10000,
            'discount_percentage': 10.0,
            'max_discount_amount': 100.0,
            'min_booking_amount': 200.0,
            'applicable_tier_id': silver_tier.id if silver_tier else None,
            'stock_quantity': None,
            'icon': '🎫',
            'is_active': True
        },
        {
            'name': '15% Premium Discount',
            'description': 'Get 15% off your next booking. Maximum discount $150. Valid for bookings over $300.',
            'reward_type': RewardType.discount,
            'points_cost': 15000,
            'discount_percentage': 15.0,
            'max_discount_amount': 150.0,
            'min_booking_amount': 300.0,
            'applicable_tier_id': gold_tier.id if gold_tier else None,
            'stock_quantity': None,
            'icon': '💎',
            'is_active': True
        },
        {
            'name': '20% VIP Discount',
            'description': 'Exclusive 20% discount for Platinum members. Maximum discount $200. Valid for bookings over $500.',
            'reward_type': RewardType.discount,
            'points_cost': 25000,
            'discount_percentage': 20.0,
            'max_discount_amount': 200.0,
            'min_booking_amount': 500.0,
            'applicable_tier_id': platinum_tier.id if platinum_tier else None,
            'stock_quantity': None,
            'icon': '👑',
            'is_active': True
        },
        
        # Room Upgrade Rewards
        {
            'name': 'Complimentary Room Upgrade',
            'description': 'Upgrade to the next room category at no extra cost. Subject to availability at check-in.',
            'reward_type': RewardType.room_upgrade,
            'points_cost': 20000,
            'applicable_tier_id': silver_tier.id if silver_tier else None,
            'stock_quantity': 50,  # Limited stock
            'icon': '🛏️',
            'is_active': True
        },
        {
            'name': 'Premium Suite Upgrade',
            'description': 'Upgrade to a premium suite or executive room. Subject to availability.',
            'reward_type': RewardType.room_upgrade,
            'points_cost': 35000,
            'applicable_tier_id': gold_tier.id if gold_tier else None,
            'stock_quantity': 30,
            'icon': '🏨',
            'is_active': True
        },
        {
            'name': 'Luxury Suite Upgrade',
            'description': 'Upgrade to our most luxurious suite category. Ultimate comfort guaranteed. Subject to availability.',
            'reward_type': RewardType.room_upgrade,
            'points_cost': 50000,
            'applicable_tier_id': platinum_tier.id if platinum_tier else None,
            'stock_quantity': 20,
            'icon': '✨',
            'is_active': True
        },
        
        # Amenity Rewards
        {
            'name': 'Welcome Amenity Package',
            'description': 'Complimentary welcome basket with fruits, chocolates, and wine upon arrival.',
            'reward_type': RewardType.amenity,
            'points_cost': 3000,
            'applicable_tier_id': None,
            'stock_quantity': None,
            'icon': '🍾',
            'is_active': True
        },
        {
            'name': 'Breakfast for Two',
            'description': 'Complimentary breakfast buffet for two guests during your stay.',
            'reward_type': RewardType.amenity,
            'points_cost': 8000,
            'applicable_tier_id': None,
            'stock_quantity': None,
            'icon': '🍳',
            'is_active': True
        },
        {
            'name': 'Spa Treatment Voucher',
            'description': 'One complimentary spa treatment of your choice (60 minutes). Valid for 90 days.',
            'reward_type': RewardType.amenity,
            'points_cost': 12000,
            'applicable_tier_id': silver_tier.id if silver_tier else None,
            'stock_quantity': 40,
            'icon': '💆',
            'is_active': True,
            'valid_until': datetime.utcnow() + timedelta(days=90)
        },
        {
            'name': 'Romantic Dinner Package',
            'description': 'Private romantic dinner for two with wine pairing at our fine dining restaurant.',
            'reward_type': RewardType.amenity,
            'points_cost': 18000,
            'applicable_tier_id': gold_tier.id if gold_tier else None,
            'stock_quantity': 25,
            'icon': '🍽️',
            'is_active': True
        },
        {
            'name': 'VIP Airport Transfer',
            'description': 'Complimentary luxury airport transfer (one-way) in premium vehicle.',
            'reward_type': RewardType.amenity,
            'points_cost': 15000,
            'applicable_tier_id': platinum_tier.id if platinum_tier else None,
            'stock_quantity': 20,
            'icon': '🚗',
            'is_active': True
        },
        
        # Voucher Rewards
        {
            'name': '$50 Hotel Credit',
            'description': 'Redeem for $50 credit towards room service, spa, or dining at the hotel. Valid for 6 months.',
            'reward_type': RewardType.voucher,
            'points_cost': 10000,
            'discount_amount': 50.0,
            'applicable_tier_id': None,
            'stock_quantity': None,
            'icon': '💳',
            'is_active': True,
            'valid_until': datetime.utcnow() + timedelta(days=180)
        },
        {
            'name': '$100 Hotel Credit',
            'description': 'Redeem for $100 credit towards any hotel service. Valid for 6 months.',
            'reward_type': RewardType.voucher,
            'points_cost': 20000,
            'discount_amount': 100.0,
            'applicable_tier_id': silver_tier.id if silver_tier else None,
            'stock_quantity': None,
            'icon': '💵',
            'is_active': True,
            'valid_until': datetime.utcnow() + timedelta(days=180)
        },
        {
            'name': '$200 Premium Credit',
            'description': 'Redeem for $200 credit towards premium services. Perfect for special occasions. Valid for 1 year.',
            'reward_type': RewardType.voucher,
            'points_cost': 40000,
            'discount_amount': 200.0,
            'applicable_tier_id': gold_tier.id if gold_tier else None,
            'stock_quantity': None,
            'icon': '💰',
            'is_active': True,
            'valid_until': datetime.utcnow() + timedelta(days=365)
        },
        
        # Cashback Rewards
        {
            'name': 'Early Check-in Benefit',
            'description': 'Guaranteed early check-in (12:00 PM) at no extra charge. Subject to availability.',
            'reward_type': RewardType.amenity,
            'points_cost': 2000,
            'applicable_tier_id': None,
            'stock_quantity': None,
            'icon': '⏰',
            'is_active': True
        },
        {
            'name': 'Late Check-out Benefit',
            'description': 'Extended check-out until 2:00 PM at no extra charge. Subject to availability.',
            'reward_type': RewardType.amenity,
            'points_cost': 2000,
            'applicable_tier_id': None,
            'stock_quantity': None,
            'icon': '🕐',
            'is_active': True
        },
        {
            'name': 'Free Night Stay',
            'description': 'One complimentary night stay in a standard room. Valid for bookings of 2+ nights.',
            'reward_type': RewardType.voucher,
            'points_cost': 30000,
            'applicable_tier_id': gold_tier.id if gold_tier else None,
            'stock_quantity': 15,
            'icon': '🌙',
            'is_active': True,
            'valid_until': datetime.utcnow() + timedelta(days=180)
        },
        {
            'name': 'Complimentary Room Service',
            'description': '$75 credit for room service orders. Valid for one stay.',
            'reward_type': RewardType.amenity,
            'points_cost': 6000,
            'discount_amount': 75.0,
            'applicable_tier_id': None,
            'stock_quantity': None,
            'icon': '🍽️',
            'is_active': True
        },
    ]
    
    created_count = 0
    skipped_count = 0
    
    for reward_data in rewards_data:
        # Check if reward already exists by name
        existing = db.query(LoyaltyReward).filter(LoyaltyReward.name == reward_data['name']).first()
        
        if existing:
            print(f'  ⚠️  Reward "{reward_data["name"]}" already exists, skipping...')
            skipped_count += 1
            continue
        
        # Create reward object
        reward = LoyaltyReward(**reward_data)
        db.add(reward)
        print(f'  ✓ Created reward: {reward_data["name"]} ({reward_data["points_cost"]:,} points)')
        created_count += 1
    
    db.commit()
    print('\n✓ Loyalty rewards seeded successfully!')
    print(f'  - Created: {created_count} reward(s)')
    print(f'  - Skipped: {skipped_count} reward(s) (already exist)')
    print('=' * 80)

def main():
    db = get_db()
    try:
        seed_loyalty_rewards(db)
        print('\n✅ Loyalty rewards seeding completed successfully!')
        print('=' * 80)
    except Exception as e:
        print(f'\n❌ Error: {e}')
        import traceback
        traceback.print_exc()
        db.rollback()
    finally:
        db.close()

if __name__ == '__main__':
    main()