import asyncio
import datetime

from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession

from backend.session import session_maker
from services.statistics.profit_statistics import ProfitStatisticsService


async def main():
    session: AsyncSession = session_maker()

    try:
        service = ProfitStatisticsService(session)
        service.date_from = datetime.date(2020, 1, 20)
        service.date_to = datetime.date(2020, 2, 10)
        stmt = service._generate_date_range(["expenses"])

        stmt = (
            select(
                stmt.c.date,
                stmt.c.expenses,
            )
        )

        result = await session.execute(stmt)

        for res in result:
            print(res)
    finally:
        await session.close()


if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())