from pathlib import Path
import sys

from sqlalchemy import text

ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(ROOT))

from app.database import engine  # noqa: E402


def _column_exists(conn, table_name: str, column_name: str) -> bool:
    return bool(conn.execute(
        text("""
            SELECT COUNT(1)
            FROM information_schema.columns
            WHERE table_schema = DATABASE()
              AND table_name = :table_name
              AND column_name = :column_name
        """),
        {"table_name": table_name, "column_name": column_name},
    ).scalar())


def main() -> None:
    with engine.begin() as conn:
        if not _column_exists(conn, "production_reports", "review_remark"):
            conn.execute(text("""
                ALTER TABLE production_reports
                ADD COLUMN review_remark VARCHAR(500) NULL AFTER reject_reason
            """))
    print("report review remark column migrated")


if __name__ == "__main__":
    main()