"use client";

import { useQuery } from "@tanstack/react-query";

import { apiFetch } from "./api";
import type {
  BuildingListing,
  BuildingSaleShare,
  SaleShareQuery,
  SaleShareSummary,
} from "@/types/sale-share";

const BASE = "/api/v1/buildings";

/**
 * GET /api/v1/buildings/sale-share/summary
 * Сводка распределения sale_share_pct: coverage, max/p95, гистограмма.
 * Нужна для слайдера % и баннера покрытия — кэшируем подольше.
 */
export function useSaleShareSummary() {
  return useQuery<SaleShareSummary>({
    queryKey: ["sale-share", "summary"],
    queryFn: () => apiFetch<SaleShareSummary>(`${BASE}/sale-share/summary`),
    staleTime: 10 * 60_000,
  });
}

function buildParams(q: SaleShareQuery): string {
  const p = new URLSearchParams();
  p.set("min_pct", String(q.min_pct));
  if (q.max_pct != null) p.set("max_pct", String(q.max_pct));
  if (q.city) p.set("city", q.city);
  if (q.price_min != null) p.set("price_min", String(q.price_min));
  if (q.price_max != null) p.set("price_max", String(q.price_max));
  if (q.year_min != null) p.set("year_min", String(q.year_min));
  if (q.year_max != null) p.set("year_max", String(q.year_max));
  if (q.house_type) p.set("house_type", q.house_type);
  p.set("sort", q.sort);
  if (q.limit != null) p.set("limit", String(q.limit));
  return p.toString();
}

/**
 * GET /api/v1/buildings/sale-share
 * Список домов вторички с долей квартир в продаже >= min_pct (+ фильтры).
 */
export function useSaleShareBuildings(query: SaleShareQuery) {
  return useQuery<BuildingSaleShare[]>({
    queryKey: [
      "sale-share",
      "buildings",
      query.min_pct,
      query.max_pct ?? null,
      query.city ?? null,
      query.price_min ?? null,
      query.price_max ?? null,
      query.year_min ?? null,
      query.year_max ?? null,
      query.house_type ?? null,
      query.sort,
      query.limit ?? 200,
    ],
    queryFn: () =>
      apiFetch<BuildingSaleShare[]>(`${BASE}/sale-share?${buildParams(query)}`),
    staleTime: 5 * 60_000,
  });
}

/**
 * GET /api/v1/buildings/{house_id}/listings
 * Активные вторичные объявления одного дома (для drawer). Лениво —
 * enabled только когда выбран дом.
 */
export function useBuildingListings(houseId: number | null) {
  return useQuery<BuildingListing[]>({
    queryKey: ["sale-share", "listings", houseId],
    queryFn: () => apiFetch<BuildingListing[]>(`${BASE}/${houseId}/listings`),
    enabled: houseId !== null,
    staleTime: 5 * 60_000,
  });
}