import { NextResponse } from "next/server";
import {
  MAX_CONDUIT_FEATURES,
  MAX_MAP_FEATURE_IDS,
  createMapFeatureWfsUrl,
  normalizeMapFeatureCollection,
  parseMapFeatureQuery
} from "@/features/workbench/map/map-feature-query";

export async function POST(request: Request) {
  const parsed = parseMapFeatureQuery(await request.json().catch(() => null));
  if (!parsed.ok) {
    return NextResponse.json({ code: parsed.code }, { status: parsed.status });
  }

  try {
    const response = await fetch(createMapFeatureWfsUrl(parsed.value), {
      cache: "no-store",
      signal: AbortSignal.timeout(8_000)
    });
    const collection = normalizeMapFeatureCollection(
      await response.json(),
      parsed.value.featureIds ? MAX_MAP_FEATURE_IDS : MAX_CONDUIT_FEATURES
    );
    if (!response.ok || !collection) throw new Error("Invalid WFS response");
    return NextResponse.json(collection);
  } catch {
    return NextResponse.json({ code: "WFS_UNAVAILABLE" }, { status: 502 });
  }
}