#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Seed script to create the PILOT2025 coupon for the pilot customer program.
This coupon provides 3 months (90 days) free trial extension for the first 20 customers.

This script runs as a Kubernetes job inside the tenant-service container.

Usage:
    python /app/services/tenant/scripts/seed_pilot_coupon.py

Environment Variables Required:
    TENANT_DATABASE_URL - PostgreSQL connection string for tenant database
    LOG_LEVEL - Logging level (default: INFO)
"""

import asyncio
import sys
import os
from datetime import datetime, timedelta, timezone
from pathlib import Path
import uuid

# Add app to path
sys.path.insert(0, str(Path(__file__).parent.parent))

from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
from sqlalchemy.orm import sessionmaker
from sqlalchemy import select
import structlog

from app.models.coupon import CouponModel

# Configure logging
structlog.configure(
    processors=[
        structlog.stdlib.add_log_level,
        structlog.processors.TimeStamper(fmt="iso"),
        structlog.dev.ConsoleRenderer()
    ]
)

logger = structlog.get_logger()


async def seed_pilot_coupon(db: AsyncSession):
    """Create or update the PILOT2025 coupon"""

    coupon_code = "PILOT2025"

    logger.info("=" * 80)
    logger.info("🎫 Seeding PILOT2025 Coupon")
    logger.info("=" * 80)

    # Check if coupon already exists
    result = await db.execute(
        select(CouponModel).where(CouponModel.code == coupon_code)
    )
    existing_coupon = result.scalars().first()

    if existing_coupon:
        logger.info(
            "Coupon already exists",
            code=coupon_code,
            current_redemptions=existing_coupon.current_redemptions,
            max_redemptions=existing_coupon.max_redemptions,
            active=existing_coupon.active,
            valid_from=existing_coupon.valid_from,
            valid_until=existing_coupon.valid_until
        )
        return existing_coupon

    # Create new coupon
    now = datetime.now(timezone.utc)
    valid_until = now + timedelta(days=180)  # Valid for 6 months

    coupon = CouponModel(
        id=uuid.uuid4(),
        code=coupon_code,
        discount_type="trial_extension",
        discount_value=90,  # 90 days = 3 months
        max_redemptions=20,  # First 20 pilot customers
        current_redemptions=0,
        valid_from=now,
        valid_until=valid_until,
        active=True,
        created_at=now,
        extra_data={
            "program": "pilot_launch_2025",
            "description": "Programa piloto - 3 meses gratis para los primeros 20 clientes",
            "terms": "Válido para nuevos registros únicamente. Un cupón por cliente."
        }
    )

    db.add(coupon)
    await db.commit()
    await db.refresh(coupon)

    logger.info("=" * 80)
    logger.info(
        "✅ Successfully created coupon",
        code=coupon_code,
        type="Trial Extension",
        value="90 days (3 months)",
        max_redemptions=20,
        valid_from=coupon.valid_from,
        valid_until=coupon.valid_until,
        id=str(coupon.id)
    )
    logger.info("=" * 80)

    return coupon


async def main():
    """Main execution function"""

    logger.info("Pilot Coupon Seeding Script Starting")
    logger.info("Log Level: %s", os.getenv("LOG_LEVEL", "INFO"))

    # Get database URL from environment
    database_url = os.getenv("TENANT_DATABASE_URL") or os.getenv("DATABASE_URL")
    if not database_url:
        logger.error("❌ TENANT_DATABASE_URL or DATABASE_URL environment variable must be set")
        return 1

    # Convert to async URL if needed
    if database_url.startswith("postgresql://"):
        database_url = database_url.replace("postgresql://", "postgresql+asyncpg://", 1)

    logger.info("Connecting to tenant database")

    # Create engine and session
    engine = create_async_engine(
        database_url,
        echo=False,
        pool_pre_ping=True,
        pool_size=5,
        max_overflow=10
    )

    async_session = sessionmaker(
        engine,
        class_=AsyncSession,
        expire_on_commit=False
    )

    try:
        async with async_session() as session:
            await seed_pilot_coupon(session)

            logger.info("")
            logger.info("🎉 Success! PILOT2025 coupon is ready.")
            logger.info("")
            logger.info("Coupon Details:")
            logger.info("  Code: PILOT2025")
            logger.info("  Type: Trial Extension")
            logger.info("  Value: 90 days (3 months)")
            logger.info("  Max Redemptions: 20")
            logger.info("")

            return 0

    except Exception as e:
        logger.error("=" * 80)
        logger.error("❌ Pilot Coupon Seeding Failed")
        logger.error("=" * 80)
        logger.error("Error: %s", str(e))
        logger.error("", exc_info=True)
        return 1

    finally:
        await engine.dispose()


if __name__ == "__main__":
    exit_code = asyncio.run(main())
    sys.exit(exit_code)