"""Seed script to create initial admin user.

Usage:
    python scripts/seed_admin.py

Environment variables required:
    DATABASE_URL=postgresql+asyncpg://user:pass@host:5432/dbname
"""

import asyncio
import os
import sys
import uuid
from datetime import datetime

# Add app to path
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
from sqlalchemy import text

from app.models.user import User
from app.services.auth_service import hash_password
from app.config import settings


async def seed_admin():
    """Create initial admin user if none exists."""
    engine = create_async_engine(settings.DATABASE_URL, echo=False)

    async with engine.begin() as conn:
        # Create tables if they don't exist
        from app.database import Base
        await conn.run_sync(Base.metadata.create_all)

    async with AsyncSession(engine) as session:
        # Check if any admin exists
        result = await session.execute(
            text("SELECT COUNT(*) FROM users WHERE role = 'admin' AND is_active = true")
        )
        admin_count = result.scalar()

        if admin_count > 0:
            print("Admin user already exists. Skipping seed.")
            return

        # Create admin user
        admin = User(
            id=uuid.uuid4(),
            email="admin@erp.local",
            password_hash=hash_password("Admin123!ERP"),
            full_name="System Administrator",
            role="admin",
            language="de",
            is_active=True,
        )

        session.add(admin)
        await session.commit()

        print("=" * 50)
        print("Admin user created successfully!")
        print("=" * 50)
        print(f"Email: admin@erp.local")
        print(f"Password: Admin123!ERP")
        print(f"Role: admin")
        print(f"Language: de")
        print("=" * 50)
        print("⚠️  Please change the password after first login!")
        print("=" * 50)

    await engine.dispose()


if __name__ == "__main__":
    asyncio.run(seed_admin())