import os
from sqlalchemy import text

def generate_alembic(session):

    try:
        result = session.execute(
            text(
                "SELECT EXISTS (SELECT 1 FROM information_schema.tables WHERE table_name = "
                "'alembic_version') AS table_existence;"
            )
        )
        if result.first()[0]:
            session.execute(text("delete from alembic_version;"))
            session.commit()
    except Exception as e:
        print(e)
    finally:
        run_command = "python -m alembic stamp head;"
        run_command += (
            "python -m alembic revision --autogenerate;python -m alembic upgrade head;"
        )
        os.system(run_command)