from datetime import date

from fastapi import APIRouter, Depends, HTTPException, status
from fastapi.responses import StreamingResponse
from PIL import Image

from ..core.config import Config
from ..core.depends import get_image, get_part, shuffle_solution
from ..core.image_helpers import api_return_image
from .user import user_is_admin

router = APIRouter(prefix="/days", tags=["days"])


@router.on_event("startup")
async def startup() -> None:
    cfg = await Config.get_config()
    print(cfg.puzzle.solution)

    shuffled_solution = await shuffle_solution(cfg)
    print(shuffled_solution)


@router.get("/date")
async def get_date() -> str:
    return date.today().isoformat()


@router.get("/visible_days")
async def get_visible_days() -> int:
    today = date.today()

    if today.month == 12:
        return today.day

    if today.month in (1, 2, 3):
        return 24

    return 0


async def user_can_view(
    day: int,
) -> bool:
    return day < await get_visible_days()


@router.get("/part/{day}")
async def get_part_for_day(part: str = Depends(get_part)) -> str:
    return part


@router.get(
    "/image/{day}",
    response_class=StreamingResponse,
)
async def get_image_for_day(
    image: Image.Image = Depends(get_image),
    can_view: bool = Depends(user_can_view),
    is_admin: bool = Depends(user_is_admin),
) -> StreamingResponse:
    """
    Bild für einen Tag erstellen
    """

    if not (can_view or is_admin):
        raise HTTPException(status.HTTP_401_UNAUTHORIZED, "Wie unhöflich!!!")

    return await api_return_image(image)