from sqlalchemy import func, select

from app.core.config import Settings
from app.infrastructure.mysql.core_models import (
    AdminUserRecord,
    PlanRecord,
    ProductRecord,
    ProductVersionRecord,
)
from app.infrastructure.mysql.sessions import (
    DatabaseName,
    create_mysql_engine,
    create_session_factory,
)

EXPECTED_COUNTS = {
    "admin_users": 9,
    "products": 4,
    "product_versions": 7,
    "plans": 10,
}


def read_seed_counts(settings: Settings | None = None) -> dict[str, int]:
    resolved_settings = settings or Settings()
    engine = create_mysql_engine(resolved_settings, DatabaseName.CORE)
    factory = create_session_factory(engine)
    models = {
        "admin_users": AdminUserRecord,
        "products": ProductRecord,
        "product_versions": ProductVersionRecord,
        "plans": PlanRecord,
    }
    with factory() as session:
        counts = {
            name: session.scalar(select(func.count()).select_from(model)) or 0
            for name, model in models.items()
        }
    engine.dispose()
    return counts


def main() -> None:
    counts = read_seed_counts()
    failures = {
        name: (counts[name], expected)
        for name, expected in EXPECTED_COUNTS.items()
        if counts[name] != expected
    }
    if failures:
        raise SystemExit(f"种子数据数量不符合固定契约：{failures}")
    print(f"种子数据验证通过：{counts}")


if __name__ == "__main__":
    main()