import { NextResponse } from "next/server";

/**
 * 代理中国地图 GeoJSON，避免前端 CORS
 */
export async function GET() {
  try {
    const res = await fetch(
      "https://geo.datav.aliyun.com/areas_v3/bound/100000_full.json"
    );
    const data = await res.json();
    return NextResponse.json(data);
  } catch (e) {
    console.error("Failed to fetch china map:", e);
    return NextResponse.json(
      { error: "Failed to load map" },
      { status: 500 }
    );
  }
}