import os
import sys

from dotenv import load_dotenv

sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from app.core.config import configs
from app.core.database import Database
from app.core.security import get_password_hash
from app.model.user import Role, User
from app.util.hash import get_rand_hash


def _required_env(name: str) -> str:
    value = os.getenv(name)
    if not value:
        raise RuntimeError(f"{name} must be set")
    return value


def seed_admin() -> None:
    load_dotenv()

    email = _required_env("ADMIN_EMAIL")
    password = _required_env("ADMIN_PASSWORD")
    name = os.getenv("ADMIN_NAME", "System Admin")
    identity_number = os.getenv("ADMIN_IDENTITY_NUMBER", "ADMIN-0001")
    update_password = os.getenv("ADMIN_UPDATE_PASSWORD", "false").lower() in {"1", "true", "yes"}

    db = Database(configs.DATABASE_URI)
    with db.session() as session:
        user = session.query(User).filter(User.email == email).first()

        if user:
            user.role = Role.admin
            user.is_superuser = True
            user.is_active = True
            user.name = user.name or name
            if update_password:
                user.password = get_password_hash(password)
            session.add(user)
            session.commit()
            print(f"Admin user already exists and was updated: {email}")
            return

        existing_identity = (
            session.query(User)
            .filter(User.identity_number == identity_number)
            .first()
        )
        if existing_identity:
            raise RuntimeError(
                "ADMIN_IDENTITY_NUMBER is already used by another user. "
                "Set a different ADMIN_IDENTITY_NUMBER."
            )

        admin = User(
            email=email,
            password=get_password_hash(password),
            user_token=get_rand_hash(),
            role=Role.admin,
            identity_number=identity_number,
            name=name,
            is_active=True,
            is_superuser=True,
        )
        session.add(admin)
        session.commit()
        print(f"Admin user created: {email}")


if __name__ == "__main__":
    seed_admin()