feat: 核心股历史前端 API 客户端

src/lib/core-stock-api.ts

@@ -0,0 +1,47 @@
+// 核心股历史数据获取工具
+import { getApiBaseUrl } from "@/lib/api-client";
+
+export interface ActiveCoreStock {
+  stockCode: string;
+  stockName: string;
+  dailyGains: Record<string, number>; // 日期 -> 当日涨幅
+  appearCount: number;
+  lastAppear: string | null;
+}
+
+export interface ActiveCoreStocksResponse {
+  dates: string[];
+  stocks: ActiveCoreStock[];
+}
+
+export interface CoreStockHistoryItem {
+  id: number;
+  trade_date: string;
+  stock_code: string;
+  stock_name: string;
+  f3: number | null;
+  cover_count: number | null;
+  rank: number;
+  themes: { theme_code: string; theme_name: string }[];
+}
+
+export interface CoreStockHistoryResponse {
+  date: string;
+  items: CoreStockHistoryItem[];
+}
+
+/** 获取活跃核心股 + 最近10日涨幅矩阵 */
+export async function fetchActiveCoreStocks(): Promise<ActiveCoreStocksResponse> {
+  const baseUrl = getApiBaseUrl();
+  const resp = await fetch(`${baseUrl}/api/core-stocks/active`, { method: "GET", cache: "no-store" });
+  if (!resp.ok) return { dates: [], stocks: [] };
+  return resp.json();
+}
+
+/** 获取指定交易日核心股(含所属题材) */
+export async function fetchCoreStockHistory(date: string): Promise<CoreStockHistoryResponse | null> {
+  const baseUrl = getApiBaseUrl();
+  const resp = await fetch(`${baseUrl}/api/core-stocks/history?date=${date}`, { method: "GET", cache: "no-store" });
+  if (!resp.ok) return null;
+  return resp.json();
+}