0.0.34

- Deleted the globals.css file to streamline styles.
- Updated color variables in index.css for improved consistency and design coherence across the application.

package.json

@@ -1,7 +1,7 @@
 {
   "name": "litek",
   "private": true,
-  "version": "0.0.32",
+  "version": "0.0.34",
   "type": "module",
   "scripts": {
     "dev": "vite",

src/components/tool/currency.tsx

@@ -53,7 +53,6 @@ const AVAILABLE_CURRENCIES: Currency[] = [
 const REQUIRED_CURRENCIES = ["USD", "CNY"];
 
 const STORAGE_KEY = "selectedCurrencies";
-const RATES_CACHE_KEY = "currencyRatesCache";
 
 const Tool: FC = () => {
   const [amounts, setAmounts] = useState<Record<string, string>>({});
@@ -91,42 +90,13 @@ const Tool: FC = () => {
     }
   }, [selectedCurrencies]);
 
-  // Fetch exchange rates with date-based caching
+  // Fetch exchange rates (Service Worker handles caching)
   useEffect(() => {
     const fetchRates = async () => {
       try {
-        // 1. Try to load from cache
-        const cached = localStorage.getItem(RATES_CACHE_KEY);
-        if (cached) {
-          try {
-            const { rates: cachedRates, date: cachedDate, fetchedAt } = JSON.parse(cached);
-            
-            const now = Date.now();
-            const twelveHoursInMs = 12 * 60 * 60 * 1000;
-            
-            // Strategy: Use cache if it's recent enough (within 12 hours)
-            // This handles all edge cases: weekends, holidays, timezone differences
-            // Exchange rates update once per day, so 12-hour cache is reasonable
-            if (fetchedAt && (now - fetchedAt < twelveHoursInMs)) {
-              setRates(cachedRates);
-              setLoading(false);
-              return;
-            } else {
-              // Cache is older than 12 hours, show it first then update in background
-              setRates(cachedRates);
-              setLoading(false);
-              // Continue to fetch new data below
-            }
-          } catch (e) {
-            console.error("Failed to parse cached rates:", e);
-          }
-        }
-
-        // 2. Fetch latest data from network
         setLoading(true);
-        const response = await fetch("https://api.frankfurter.app/latest?base=USD", {
+        // Service Worker will handle caching with StaleWhileRevalidate strategy
-          cache: "no-cache",
+        const response = await fetch("https://api.frankfurter.app/latest?base=USD");
-        });
         
         if (!response.ok) {
           throw new Error(`HTTP error! status: ${response.status}`);
@@ -134,40 +104,14 @@ const Tool: FC = () => {
         
         const data = await response.json();
         const allRates: Record<string, number> = { USD: 1, ...data.rates };
-        const apiDate = data.date; // Date from API (YYYY-MM-DD format)
         
-        // 3. Update state and cache (with timestamp)
         setRates(allRates);
-        localStorage.setItem(
-          RATES_CACHE_KEY,
-          JSON.stringify({ 
-            rates: allRates, 
-            date: apiDate,
-            fetchedAt: Date.now() // Timestamp when we fetched the data
-          })
-        );
       } catch (error) {
-        // If cache exists, continue using it even if network fails
+        console.error("Failed to fetch rates:", error);
-        const cached = localStorage.getItem(RATES_CACHE_KEY);
+        if (error instanceof Error) {
-        if (cached) {
+          toast.error(`Failed to fetch exchange rates: ${error.message}`);
-          try {
-            const { rates: cachedRates } = JSON.parse(cached);
-            setRates(cachedRates);
-            toast.info("Using cached exchange rates (network request failed)");
-          } catch (e) {
-            console.error("Failed to use cached rates:", e);
-            if (error instanceof Error) {
-              toast.error(`Failed to fetch rates: ${error.message}`);
-            } else {
-              toast.error("Failed to fetch rates");
-            }
-          }
         } else {
-          if (error instanceof Error) {
+          toast.error("Failed to fetch exchange rates");
-            toast.error(`Failed to fetch rates: ${error.message}`);
-          } else {
-            toast.error("Failed to fetch rates");
-          }
         }
       } finally {
         setLoading(false);

src/globals.css

@@ -1,23 +0,0 @@
-@layer base {
-  :root {
-    --sidebar: oklch(0.985 0 0);
-    --sidebar-foreground: oklch(0.145 0 0);
-    --sidebar-primary: oklch(0.205 0 0);
-    --sidebar-primary-foreground: oklch(0.985 0 0);
-    --sidebar-accent: oklch(0.97 0 0);
-    --sidebar-accent-foreground: oklch(0.205 0 0);
-    --sidebar-border: oklch(0.922 0 0);
-    --sidebar-ring: oklch(0.708 0 0);
-  }
-
-  .dark {
-    --sidebar: oklch(0.205 0 0);
-    --sidebar-foreground: oklch(0.985 0 0);
-    --sidebar-primary: oklch(0.488 0.243 264.376);
-    --sidebar-primary-foreground: oklch(0.985 0 0);
-    --sidebar-accent: oklch(0.269 0 0);
-    --sidebar-accent-foreground: oklch(0.985 0 0);
-    --sidebar-border: oklch(1 0 0 / 10%);
-    --sidebar-ring: oklch(0.439 0 0);
-  }
-}

src/index.css

@@ -42,72 +42,72 @@
 }
 
 :root {
-  --radius: 0.625rem;
+  --radius: 0.65rem;
   --background: oklch(1 0 0);
-  --foreground: oklch(0.13 0.028 261.692);
+  --foreground: oklch(0.141 0.005 285.823);
   --card: oklch(1 0 0);
-  --card-foreground: oklch(0.13 0.028 261.692);
+  --card-foreground: oklch(0.141 0.005 285.823);
   --popover: oklch(1 0 0);
-  --popover-foreground: oklch(0.13 0.028 261.692);
+  --popover-foreground: oklch(0.141 0.005 285.823);
-  --primary: oklch(0.21 0.034 264.665);
+  --primary: oklch(0.646 0.222 41.116);
-  --primary-foreground: oklch(0.985 0.002 247.839);
+  --primary-foreground: oklch(0.98 0.016 73.684);
-  --secondary: oklch(0.967 0.003 264.542);
+  --secondary: oklch(0.967 0.001 286.375);
-  --secondary-foreground: oklch(0.21 0.034 264.665);
+  --secondary-foreground: oklch(0.21 0.006 285.885);
-  --muted: oklch(0.967 0.003 264.542);
+  --muted: oklch(0.967 0.001 286.375);
-  --muted-foreground: oklch(0.551 0.027 264.364);
+  --muted-foreground: oklch(0.552 0.016 285.938);
-  --accent: oklch(0.967 0.003 264.542);
+  --accent: oklch(0.967 0.001 286.375);
-  --accent-foreground: oklch(0.21 0.034 264.665);
+  --accent-foreground: oklch(0.21 0.006 285.885);
   --destructive: oklch(0.577 0.245 27.325);
-  --border: oklch(0.928 0.006 264.531);
+  --border: oklch(0.92 0.004 286.32);
-  --input: oklch(0.928 0.006 264.531);
+  --input: oklch(0.92 0.004 286.32);
-  --ring: oklch(0.707 0.022 261.325);
+  --ring: oklch(0.75 0.183 55.934);
-  --chart-1: oklch(0.646 0.222 41.116);
+  --chart-1: oklch(0.837 0.128 66.29);
-  --chart-2: oklch(0.6 0.118 184.704);
+  --chart-2: oklch(0.705 0.213 47.604);
-  --chart-3: oklch(0.398 0.07 227.392);
+  --chart-3: oklch(0.646 0.222 41.116);
-  --chart-4: oklch(0.828 0.189 84.429);
+  --chart-4: oklch(0.553 0.195 38.402);
-  --chart-5: oklch(0.769 0.188 70.08);
+  --chart-5: oklch(0.47 0.157 37.304);
-  --sidebar: oklch(0.985 0.002 247.839);
+  --sidebar: oklch(0.985 0 0);
-  --sidebar-foreground: oklch(0.13 0.028 261.692);
+  --sidebar-foreground: oklch(0.141 0.005 285.823);
-  --sidebar-primary: oklch(0.21 0.034 264.665);
+  --sidebar-primary: oklch(0.646 0.222 41.116);
-  --sidebar-primary-foreground: oklch(0.985 0.002 247.839);
+  --sidebar-primary-foreground: oklch(0.98 0.016 73.684);
-  --sidebar-accent: oklch(0.967 0.003 264.542);
+  --sidebar-accent: oklch(0.967 0.001 286.375);
-  --sidebar-accent-foreground: oklch(0.21 0.034 264.665);
+  --sidebar-accent-foreground: oklch(0.21 0.006 285.885);
-  --sidebar-border: oklch(0.928 0.006 264.531);
+  --sidebar-border: oklch(0.92 0.004 286.32);
-  --sidebar-ring: oklch(0.707 0.022 261.325);
+  --sidebar-ring: oklch(0.75 0.183 55.934);
 }
 
 .dark {
-  --background: oklch(0.13 0.028 261.692);
+  --background: oklch(0.141 0.005 285.823);
-  --foreground: oklch(0.985 0.002 247.839);
+  --foreground: oklch(0.985 0 0);
-  --card: oklch(0.21 0.034 264.665);
+  --card: oklch(0.21 0.006 285.885);
-  --card-foreground: oklch(0.985 0.002 247.839);
+  --card-foreground: oklch(0.985 0 0);
-  --popover: oklch(0.21 0.034 264.665);
+  --popover: oklch(0.21 0.006 285.885);
-  --popover-foreground: oklch(0.985 0.002 247.839);
+  --popover-foreground: oklch(0.985 0 0);
-  --primary: oklch(0.928 0.006 264.531);
+  --primary: oklch(0.705 0.213 47.604);
-  --primary-foreground: oklch(0.21 0.034 264.665);
+  --primary-foreground: oklch(0.98 0.016 73.684);
-  --secondary: oklch(0.278 0.033 256.848);
+  --secondary: oklch(0.274 0.006 286.033);
-  --secondary-foreground: oklch(0.985 0.002 247.839);
+  --secondary-foreground: oklch(0.985 0 0);
-  --muted: oklch(0.278 0.033 256.848);
+  --muted: oklch(0.274 0.006 286.033);
-  --muted-foreground: oklch(0.707 0.022 261.325);
+  --muted-foreground: oklch(0.705 0.015 286.067);
-  --accent: oklch(0.278 0.033 256.848);
+  --accent: oklch(0.274 0.006 286.033);
-  --accent-foreground: oklch(0.985 0.002 247.839);
+  --accent-foreground: oklch(0.985 0 0);
   --destructive: oklch(0.704 0.191 22.216);
   --border: oklch(1 0 0 / 10%);
   --input: oklch(1 0 0 / 15%);
-  --ring: oklch(0.551 0.027 264.364);
+  --ring: oklch(0.408 0.123 38.172);
-  --chart-1: oklch(0.488 0.243 264.376);
+  --chart-1: oklch(0.837 0.128 66.29);
-  --chart-2: oklch(0.696 0.17 162.48);
+  --chart-2: oklch(0.705 0.213 47.604);
-  --chart-3: oklch(0.769 0.188 70.08);
+  --chart-3: oklch(0.646 0.222 41.116);
-  --chart-4: oklch(0.627 0.265 303.9);
+  --chart-4: oklch(0.553 0.195 38.402);
-  --chart-5: oklch(0.645 0.246 16.439);
+  --chart-5: oklch(0.47 0.157 37.304);
-  --sidebar: oklch(0.21 0.034 264.665);
+  --sidebar: oklch(0.21 0.006 285.885);
-  --sidebar-foreground: oklch(0.985 0.002 247.839);
+  --sidebar-foreground: oklch(0.985 0 0);
-  --sidebar-primary: oklch(0.488 0.243 264.376);
+  --sidebar-primary: oklch(0.705 0.213 47.604);
-  --sidebar-primary-foreground: oklch(0.985 0.002 247.839);
+  --sidebar-primary-foreground: oklch(0.98 0.016 73.684);
-  --sidebar-accent: oklch(0.278 0.033 256.848);
+  --sidebar-accent: oklch(0.274 0.006 286.033);
-  --sidebar-accent-foreground: oklch(0.985 0.002 247.839);
+  --sidebar-accent-foreground: oklch(0.985 0 0);
   --sidebar-border: oklch(1 0 0 / 10%);
-  --sidebar-ring: oklch(0.551 0.027 264.364);
+  --sidebar-ring: oklch(0.408 0.123 38.172);
 }
 
 @layer base {

vite.config.ts

@@ -54,6 +54,21 @@ export default defineConfig(({ mode }) => ({
               }
             }
           },
+          {
+            // Frankfurter API 汇率缓存
+            urlPattern: /^https:\/\/api\.frankfurter\.app\/.*/i,
+            handler: 'StaleWhileRevalidate',
+            options: {
+              cacheName: 'currency-rates-cache',
+              expiration: {
+                maxEntries: 5,
+                maxAgeSeconds: 60 * 60 * 12 // 12 小时
+              },
+              cacheableResponse: {
+                statuses: [0, 200]
+              }
+            }
+          },
           {
             // Google Fonts 样式表缓存
             urlPattern: /^https:\/\/fonts\.googleapis\.com\/.*/i,