"""Library browsing and Stats API (read-only over analysis results)."""

from __future__ import annotations

from fastapi import APIRouter, Query, Request

from photo_pipeline.services.library import LibraryService

router = APIRouter(tags=["library"])

_FILTER_KEYS = ("setting", "tod", "season", "status", "people", "year_min", "year_max", "has_location", "album")


def _service(request: Request) -> LibraryService:
    return LibraryService(request.app.state.session_factory)


@router.get("/library/assets")
def search(
    request: Request,
    q: str = "",
    sort: str = "path",
    limit: int = Query(60, ge=1, le=200),
    offset: int = Query(0, ge=0),
) -> dict:
    filters = {key: value for key, value in request.query_params.items() if key in _FILTER_KEYS}
    return _service(request).search(q=q, filters=filters, sort=sort, offset=offset, limit=limit)


@router.get("/library/facets")
def facets(request: Request) -> dict:
    return _service(request).facets()


@router.get("/library/stats")
def stats(request: Request) -> dict:
    return _service(request).stats()