upload 기능 구현 전에 일단 커밋

server/vworld.js

@@ -0,0 +1,65 @@
+const VWORLD_ENDPOINT = 'https://api.vworld.kr/req/data';
+
+function credentials() {
+  return {
+    key: process.env.VWORLD_API_KEY || process.env.VITE_VWORLD_API_KEY || '',
+    domain: process.env.VWORLD_DOMAIN || 'localhost',
+  };
+}
+
+async function fetchVworldFeatures(data, attrFilter) {
+  const { key, domain } = credentials();
+  if (!key) throw new Error('VWORLD_API_KEY 환경변수가 설정되지 않았습니다.');
+
+  const size = 1000;
+  const base = new URLSearchParams({
+    service: 'data',
+    request: 'GetFeature',
+    data,
+    format: 'json',
+    geometry: 'false',
+    size: String(size),
+    key,
+  });
+  if (attrFilter) base.set('attrFilter', attrFilter);
+  base.set('domain', domain);
+
+  const features = [];
+  let page = 1;
+  let total = Infinity;
+
+  while (features.length < total && page <= 20) {
+    const params = new URLSearchParams(base);
+    params.set('page', String(page));
+
+    const res = await fetch(`${VWORLD_ENDPOINT}?${params}`);
+    if (!res.ok) throw new Error(`VWorld 요청 실패 (HTTP ${res.status})`);
+    const json = await res.json();
+
+    const response = json.response;
+    if (response?.status !== 'OK') {
+      throw new Error(`VWorld 조회 실패: ${JSON.stringify(response ?? json)}`);
+    }
+
+    const result = response.result?.featureCollection?.features ?? [];
+    features.push(...result);
+
+    total = Number(response.record?.total ?? 0) || total;
+    if (result.length === 0) break;
+    page += 1;
+  }
+  return features;
+}
+
+export async function fetchGus() {
+  const features = await fetchVworldFeatures('LT_C_ADSIGG_INFO', 'full_nm:like:서울');
+  return features.map((f) => ({
+    code: f.properties.sig_cd,
+    name: f.properties.sig_kor_nm,
+  }));
+}
+
+export async function fetchDongs(guCode) {
+  const features = await fetchVworldFeatures('LT_C_ADEMD_INFO', `emd_cd:like:${guCode}`);
+  return features.map((f) => f.properties.emd_kor_nm).filter(Boolean);
+}