perf: optimize IP info card

Changelog.md

@@ -30,5 +30,6 @@
 - 连通性测试替换为更快的 https://1.1.1.1
 - 连接、规则、日志等页面的过滤搜索组件新增了清空输入框按钮
 - 链式代理增加明显的入口出口与数据流向标识
+- 优化 IP 信息卡
 
 </details>

src/components/home/ip-info-card.tsx

@@ -21,11 +21,13 @@ import { useTranslation } from "react-i18next";
 import useSWRImmutable from "swr/immutable";
 
 import { getIpInfo } from "@/services/api";
+import { SWR_EXTERNAL_API } from "@/services/config";
 
 import { EnhancedCard } from "./enhanced-card";
 
 // 定义刷新时间（秒）
 const IP_REFRESH_SECONDS = 300;
+const COUNTDOWN_TICK_INTERVAL = 5_000;
 const IP_INFO_CACHE_KEY = "cv_ip_info_cache";
 
 const InfoItem = memo(({ label, value }: { label: string; value?: string }) => (
@@ -180,7 +182,7 @@ export const IpInfoCard = () => {
       console.debug(
         "IP info card has entered the viewport, starting the countdown interval.",
       );
-      timer = window.setInterval(onCountdownTick, 1000);
+      timer = window.setInterval(onCountdownTick, COUNTDOWN_TICK_INTERVAL);
     } else {
       console.debug(
         "IP info card has not yet entered the viewport, no counting down.",
@@ -207,7 +209,7 @@ export const IpInfoCard = () => {
         console.debug("Document visible, resume the interval");
         // Resume the timer only when previous one is cleared
         if (timer == null) {
-          timer = window.setInterval(onCountdownTick, 1000);
+          timer = window.setInterval(onCountdownTick, COUNTDOWN_TICK_INTERVAL);
         }
       } else {
         console.debug(
@@ -420,7 +422,5 @@ export const IpInfoCard = () => {
 };
 
 function useIPInfo() {
-  return useSWRImmutable(IP_INFO_CACHE_KEY, getIpInfo, {
-    shouldRetryOnError: true,
-  });
+  return useSWRImmutable(IP_INFO_CACHE_KEY, getIpInfo, SWR_EXTERNAL_API);
 }

src/services/api.ts

@@ -137,62 +137,6 @@ const IP_CHECK_SERVICES: ServiceConfig[] = [
   },
 ];
 
-// 随机性服务列表洗牌函数
-function shuffleServices() {
-  // 过滤无效服务并确保每个元素符合ServiceConfig接口
-  const validServices = IP_CHECK_SERVICES.filter(
-    (service): service is ServiceConfig =>
-      service !== null &&
-      service !== undefined &&
-      typeof service.url === "string" &&
-      typeof service.mapping === "function", // 添加对mapping属性的检查
-  );
-
-  if (validServices.length === 0) {
-    console.error("No valid services found in IP_CHECK_SERVICES");
-    return [];
-  }
-
-  // 使用单一Fisher-Yates洗牌算法，增强随机性
-  const shuffled = [...validServices];
-  const length = shuffled.length;
-
-  // 使用多个种子进行多次洗牌
-  const seeds = [Math.random(), Date.now() / 1000, performance.now() / 1000];
-
-  for (const seed of seeds) {
-    const prng = createPrng(seed);
-
-    // Fisher-Yates洗牌算法
-    for (let i = length - 1; i > 0; i--) {
-      const j = Math.floor(prng() * (i + 1));
-
-      // 使用临时变量进行交换，避免解构赋值可能的问题
-      const temp = shuffled[i];
-      shuffled[i] = shuffled[j];
-      shuffled[j] = temp;
-    }
-  }
-
-  return shuffled;
-}
-
-// 创建一个简单的随机数生成器
-function createPrng(seed: number): () => number {
-  // 使用xorshift32算法
-  let state = seed >>> 0;
-
-  // 如果种子为0，设置一个默认值
-  if (state === 0) state = 123456789;
-
-  return function () {
-    state ^= state << 13;
-    state ^= state >>> 17;
-    state ^= state << 5;
-    return (state >>> 0) / 4294967296;
-  };
-}
-
 // 获取当前IP和地理位置信息
 export const getIpInfo = async (): Promise<
   IpInfo & { lastFetchTs: number }
@@ -201,7 +145,9 @@ export const getIpInfo = async (): Promise<
   const maxRetries = 2;
   const serviceTimeout = 5000;
 
-  const shuffledServices = shuffleServices();
+  const shuffledServices = IP_CHECK_SERVICES.toSorted(
+    () => Math.random() - 0.5,
+  );
   let lastError: unknown | null = null;
   const userAgent = await getUserAgentPromise();
   console.debug("User-Agent for IP detection:", userAgent);
@@ -236,7 +182,12 @@ export const getIpInfo = async (): Promise<
             );
           }
 
-          const data = await response.json();
+          let data: any;
+          try {
+            data = await response.json();
+          } catch {
+            return bail(new Error(`无法解析 JSON 响应 from ${service.url}`));
+          }
 
           if (data && data.ip) {
             debugLog(`IP检测成功，使用服务: ${service.url}`);
@@ -245,7 +196,7 @@ export const getIpInfo = async (): Promise<
               lastFetchTs: Date.now(),
             });
           } else {
-            throw new Error(`无效的响应格式 from ${service.url}`);
+            return bail(new Error(`无效的响应格式 from ${service.url}`));
           }
         },
         {

src/services/config.ts

@@ -26,3 +26,10 @@ export const SWR_MIHOMO = {
   errorRetryInterval: 500,
   errorRetryCount: 15,
 };
+
+export const SWR_EXTERNAL_API = {
+  ...SWR_NOT_SMART,
+  shouldRetryOnError: true,
+  errorRetryCount: 1,
+  errorRetryInterval: 30_000,
+} as const;