"""
Router "aggregate" provides:

- listing aggregate calendars
- finding aggregate calendars by name prefix
- getting aggregate calendar events by name prefix
"""

import logging

from fastapi import APIRouter, Depends

from ...core.caldav import CalDAV
from ...core.calevent import CalEvent
from ...core.config import Config, get_config
from ._common import LM_AGGREGATES, LM_CALENDARS

_logger = logging.getLogger(__name__)

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


@router.on_event("startup")
async def start_router() -> None:
    _logger.debug(f"{router.prefix} router starting.")


@router.get(
    "/list",
    responses=LM_AGGREGATES.lister.responses,
)
async def list_aggregate_calendars(
    names: list[str] = Depends(LM_AGGREGATES.lister.func),
) -> list[str]:
    return names


@router.get(
    "/find/{prefix}",
    responses=LM_AGGREGATES.filter.responses,
)
async def find_aggregate_calendars(
    names: list[str] = Depends(LM_AGGREGATES.filter.func),
) -> list[str]:
    return names


@router.get(
    "/get/{prefix}",
    responses=LM_AGGREGATES.getter.responses,
)
async def get_aggregate_calendar(
    cfg: Config = Depends(get_config),
    name: str = Depends(LM_AGGREGATES.getter.func),
) -> list[CalEvent]:
    events: list[CalEvent] = []

    for cal_prefix in cfg.calendar.aggregates[name]:
        cal_name = await LM_CALENDARS.getter.func(cal_prefix)
        events.extend(await CalDAV.get_events(cal_name, cfg))

    return sorted(events)