goldenChat base source add

frontend/src/utils/marketStorage.ts

@@ -0,0 +1,108 @@
+/**
+ * 관심종목(즐겨찾기) / 보유종목 관리
+ * - DB(gc_watchlist)가 기준 저장소
+ * - localStorage(gc_favorites)는 오프라인 미러·UI 동기화용
+ */
+
+import { addWatchlistItem, removeWatchlistItem } from './backendApi';
+
+const FAV_KEY         = 'gc_favorites';
+const LEGACY_FAV_KEY  = 'upbit_market_favorites';
+const HOLD_KEY        = 'gc_holdings';
+
+/** 관심종목 변경 시 MarketSearchPanel·App 등이 동기화하도록 발행 */
+export const FAVORITES_CHANGED_EVENT = 'gc-favorites-changed';
+
+// ── 즐겨찾기 (관심종목) ─────────────────────────────────────────────────────
+
+/** 구버전 MarketSearchPanel 키 → gc_favorites 로 1회 마이그레이션 */
+function migrateLegacyFavorites(): void {
+  try {
+    const raw = localStorage.getItem(FAV_KEY);
+    if (raw) {
+      const current = JSON.parse(raw) as string[];
+      if (Array.isArray(current) && current.length > 0) return;
+    }
+    const legacy = localStorage.getItem(LEGACY_FAV_KEY);
+    if (!legacy) return;
+    const parsed = JSON.parse(legacy) as string[];
+    if (Array.isArray(parsed) && parsed.length > 0) {
+      saveFavorites(parsed, false);
+    }
+  } catch { /* ignore */ }
+}
+
+export function getFavorites(): string[] {
+  migrateLegacyFavorites();
+  try { return JSON.parse(localStorage.getItem(FAV_KEY) ?? '[]'); }
+  catch { return []; }
+}
+
+export function saveFavorites(markets: string[], notify = true): void {
+  try {
+    localStorage.setItem(FAV_KEY, JSON.stringify(markets));
+    if (notify) {
+      window.dispatchEvent(new CustomEvent(FAVORITES_CHANGED_EVENT, { detail: markets }));
+    }
+  } catch { /* ignore */ }
+}
+
+/**
+ * 관심종목 토글 — DB 저장 + 실시간 전략 체크 대상 자동 연동(백엔드).
+ * @returns 변경 후 관심종목 코드 목록
+ */
+export async function toggleFavorite(
+  market: string,
+  meta?: { koreanName?: string; englishName?: string },
+): Promise<string[]> {
+  const list = getFavorites();
+  let next: string[];
+  if (list.includes(market)) {
+    await removeWatchlistItem(market);
+    next = list.filter(m => m !== market);
+  } else {
+    await addWatchlistItem({
+      symbol:       market,
+      koreanName:   meta?.koreanName,
+      englishName:  meta?.englishName,
+    });
+    next = [...list, market];
+  }
+  saveFavorites(next);
+  return next;
+}
+
+export function isFavorite(market: string): boolean {
+  return getFavorites().includes(market);
+}
+
+// ── 보유종목 ─────────────────────────────────────────────────────────────────
+
+export function getHoldings(): string[] {
+  try { return JSON.parse(localStorage.getItem(HOLD_KEY) ?? '[]'); }
+  catch { return []; }
+}
+
+export function saveHoldings(markets: string[]): void {
+  try { localStorage.setItem(HOLD_KEY, JSON.stringify(markets)); } catch { /* ignore */ }
+}
+
+/** 추가 → 변경 후 전체 목록 반환 (중복 무시) */
+export function addHolding(market: string): string[] {
+  const list = getHoldings();
+  if (list.includes(market)) return list;
+  const next = [...list, market];
+  saveHoldings(next);
+  return next;
+}
+
+/** 제거 → 변경 후 전체 목록 반환 */
+export function removeHolding(market: string): string[] {
+  const next = getHoldings().filter(m => m !== market);
+  saveHoldings(next);
+  return next;
+}
+
+export function isHolding(market: string): boolean {
+  return getHoldings().includes(market);
+}