import asyncio
import asyncpg
import os
from asyncpg.connection import Connection


async def drop_tables(connection: Connection):
    await connection.execute(
        "DROP TABLE users, tags, categories, projects CASCADE"
    )


async def main():
    DB_URL = os.getenv("DB_URL")
    connection = await asyncpg.connect(DB_URL)
    await drop_tables(connection)
    await connection.close()


if __name__ == '__main__':
    asyncio.run(main())