feat(health): 趋势图升级为 ECharts 折线图 + 缓存 TTL 5分钟

apps/miniprogram/src/stores/health.ts

@@ -1,14 +1,22 @@
 import { create } from 'zustand';
 import * as healthApi from '@/services/health';
 
+interface CachedTrend {
+  data: { date: string; value: number }[];
+  cachedAt: number;
+}
+
 interface HealthState {
   todaySummary: healthApi.TodaySummary | null;
-  trendData: Record<string, { date: string; value: number }[]>;
+  trendData: Record<string, CachedTrend>;
   loading: boolean;
   refreshToday: () => Promise<void>;
   getTrend: (indicator: string, range: string) => Promise<{ date: string; value: number }[]>;
+  clearCache: () => void;
 }
 
+const CACHE_TTL = 5 * 60 * 1000; // 5 分钟
+
 export const useHealthStore = create<HealthState>((set, get) => ({
   todaySummary: null,
   trendData: {},
@@ -27,15 +35,19 @@ export const useHealthStore = create<HealthState>((set, get) => ({
   getTrend: async (indicator: string, range: string) => {
     const cacheKey = `${indicator}_${range}`;
     const cached = get().trendData[cacheKey];
-    if (cached) return cached;
+    if (cached && Date.now() - cached.cachedAt < CACHE_TTL) {
+      return cached.data;
+    }
 
     try {
       const resp = await healthApi.getTrend(indicator, range);
       const points = resp.data_points || [];
-      set((s) => ({ trendData: { ...s.trendData, [cacheKey]: points } }));
+      set((s) => ({ trendData: { ...s.trendData, [cacheKey]: { data: points, cachedAt: Date.now() } } }));
       return points;
     } catch {
       return [];
     }
   },
+
+  clearCache: () => set({ trendData: {}, todaySummary: null }),
 }));