import datetime
from typing import Annotated

from fastapi import Depends, HTTPException, status


def date_parser(date: str) -> datetime.date:
    if date == "today":
        return datetime.date.today()
    elif date == "tomorrow":
        return datetime.date.today() + datetime.timedelta(days=1)
    elif date.startswith("day-"):
        days = int(date.split("-")[-1])
        return datetime.date.today() + datetime.timedelta(days=days)
    else:
        try:
            return datetime.date.strptime(date, "%Y-%m-%d")
        except ValueError as exc:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail={"date": f"{exc}"},
            ) from exc


DateDepends = Annotated[datetime.date, Depends(date_parser)]