"""HTTP routes for the Swedish calendar (röda dagar / klämdagar).

Routers stay thin: validate via Pydantic/query params, call the service, map
domain errors to HTTP. Serves both §3.4 (Kalender shading) and §3.8 (Settings
red-days list) from one endpoint — see `app.services.calendar_service`.
"""

from uuid import UUID

from fastapi import APIRouter, HTTPException, Query, status

from app.dependencies import CalendarServiceDep, WorkspaceScopeDep
from app.models.calendar import CalendarDaysResponse
from app.services.calendar_service import MAX_WINDOW_YEARS
from app.utils.errors import ValidationError

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


@router.get("/days", response_model=CalendarDaysResponse)
async def get_calendar_days(
    workspace_id: UUID,
    start_year: int,
    service: CalendarServiceDep,
    scope: WorkspaceScopeDep,
    years: int = Query(default=MAX_WINDOW_YEARS, ge=1, le=MAX_WINDOW_YEARS),
) -> CalendarDaysResponse:
    scope.check_workspace(workspace_id)
    try:
        window = await service.get_calendar_window(
            workspace_id=workspace_id, start_year=start_year, years=years
        )
    except ValidationError as exc:
        raise HTTPException(status.HTTP_422_UNPROCESSABLE_CONTENT, str(exc)) from exc
    return CalendarDaysResponse.from_domain(window)