// -----------------------------------------------------------------------------
// Author: Simon-Pierre Boucher
// Contact: contact@spboucher.ai
// Project: Groupe Ka / Ka Maps (Lou-Ka — location court terme)
// kamaps/ctAdapter.ts : adaptateur /api/ct/listings.geojson → MapProperty.
// -----------------------------------------------------------------------------
import type {
  BoundsQuery,
  BoundsQueryResult,
  KaDataAdapter,
  MapProperty,
} from "@groupe-ka/ka-maps";
import { bboxToString } from "@groupe-ka/ka-maps";
import type { CtFilters } from "../ctapi";

interface CtFeatureProps {
  uid: string;
  title: string | null;
  property_type: string | null;
  city: string | null;
  region: string | null;
  price_night: number | null;
  price_label: string | null;
  capacity: number | null;
  bedrooms: number | null;
  rating: number | null;
  source: string;
  image: string | null;
}

interface CtFC {
  type: "FeatureCollection";
  features: {
    geometry: { coordinates: [number, number] };
    properties: CtFeatureProps;
  }[];
  totalGeocoded?: number;
}

function toMapProperty(coords: [number, number], p: CtFeatureProps): MapProperty {
  return {
    id: p.uid,
    appSource: "lou-ka",
    longitude: coords[0],
    latitude: coords[1],
    kind: "listing",
    listingType: "rent",
    price: p.price_night ?? undefined,
    propertyType: p.property_type ?? undefined,
    address: p.title ?? undefined,
    city: p.city ?? undefined,
    region: p.region ?? undefined,
    thumbnailUrl: p.image ?? undefined,
    originalUrl: `/court-terme/${encodeURIComponent(p.uid)}`,
    extra: {
      title: p.title,
      priceLabel: p.price_label,
      capacity: p.capacity,
      bedrooms: p.bedrooms,
      rating: p.rating,
      source: p.source,
    },
  };
}

/** Adaptateur viewport→données pour la carte court terme. */
export const ctMapAdapter: KaDataAdapter = {
  id: "lou-ka-ct-listings",
  appSource: "lou-ka",
  async fetchInBounds(query: BoundsQuery): Promise<BoundsQueryResult> {
    const params = new URLSearchParams();
    const filters = (query.filters ?? {}) as Partial<CtFilters>;
    for (const [k, v] of Object.entries(filters)) {
      if (v) params.set(k, String(v));
    }
    params.set("bbox", bboxToString(query.bbox));
    params.set("limit", "4000");

    const res = await fetch(`/api/ct/listings.geojson?${params}`, {
      signal: query.signal,
    });
    if (!res.ok) throw new Error(`Carte : API ${res.status}`);
    const data = (await res.json()) as CtFC;

    return {
      properties: data.features.map((f) =>
        toMapProperty(f.geometry.coordinates, f.properties),
      ),
    };
  },
};