updated the shuffling algorithm and added a deduplication detection mechanism (#3521)

UPDATELOG.md

@@ -65,6 +65,8 @@
  - Mihomo 内核默认日志等级为 warn
  - Clash Verge Rev 应用默认日志等级为 warn
  - 重构了原来的 IP 信息请求重试机制，采用轮询检测，解决了 Network Error 和超时问题
+ - 对轮询检测机制进行了优化，引入洗牌算法来增强随机性。
+ - 对获取系统信息的流程进行了优化，并添加了去重检测机制，确保剔除重复的信息
 
 ## v2.2.3
 

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

@@ -26,28 +26,34 @@ export const SystemInfoCard = () => {
   const navigate = useNavigate();
   const { isAdminMode, isSidecarMode, mutateRunningMode } = useSystemState();
 
-  // 系统信息状态
-  const [systemState, setSystemState] = useState({
-    osInfo: "",
-    lastCheckUpdate: "-",
-  });
+// 系统信息状态
+const [systemState, setSystemState] = useState({
+  osInfo: "",
+  lastCheckUpdate: "-",
+});
 
-  // 初始化系统信息
-  useEffect(() => {
-    // 获取系统信息
-    getSystemInfo()
-      .then((info) => {
-        const lines = info.split("\n");
-        if (lines.length > 0) {
-          const sysName = lines[0].split(": ")[1] || "";
-          const sysVersion = lines[1].split(": ")[1] || "";
-          setSystemState((prev) => ({
-            ...prev,
-            osInfo: `${sysName} ${sysVersion}`,
-          }));
+// 初始化系统信息
+useEffect(() => {
+  // 获取系统信息
+  getSystemInfo()
+    .then((info) => {
+      const lines = info.split("\n");
+      if (lines.length > 0) {
+        const sysName = lines[0].split(": ")[1] || "";
+        let sysVersion = lines[1].split(": ")[1] || "";
+        
+        // 处理sysVersion前缀与sysName相同的情况
+        if (sysName && sysVersion.toLowerCase().startsWith(sysName.toLowerCase())) {
+          sysVersion = sysVersion.substring(sysName.length).trim();
         }
-      })
-      .catch(console.error);
+        
+        setSystemState((prev) => ({
+          ...prev,
+          osInfo: `${sysName} ${sysVersion}`,
+        }));
+      }
+    })
+    .catch(console.error);
 
     // 获取最后检查更新时间
     const lastCheck = localStorage.getItem("last_check_update");

src/services/api.ts

@@ -376,31 +376,97 @@ const IP_CHECK_SERVICES: ServiceConfig[] = [
     }),
   },
   {
-    url: "https://ipinfo.io/json",
-    mapping: (data) => {
-      const [asn, ...orgParts] = (data.org || '').split(' ');
-      const asnOrg = orgParts.join(' ');
-
-      return {
-        ip: data.ip || '',
-        country_code: data.country || '',
-        country: data.country || '', 
-        region: data.region || '',
-        city: data.city || '',
-        organization: asnOrg || '',
-        asn: asn? parseInt(asn.replace('AS', '')) : 0,
-        asn_organization: asnOrg || '',
-        longitude: parseFloat(data.loc?.split(',')[1] || '0'),
-        latitude: parseFloat(data.loc?.split(',')[0] || '0'),
-        timezone: data.timezone || '',
-      };
-    },
+    url: "https://api.ipapi.is/",
+    mapping: (data) => ({
+      ip: data.ip || '',
+      country_code: data.location?.country_code || '',
+      country: data.location?.country || '',
+      region: data.location?.state || '',
+      city: data.location?.city || '',
+      organization: data.asn?.org || data.company?.name || '',
+      asn: data.asn?.asn || 0,
+      asn_organization: data.asn?.org || '',
+      longitude: data.location?.longitude || 0,
+      latitude: data.location?.latitude || 0,
+      timezone: data.location?.timezone || '',
+    }),
+  },
+  {
+    url: "https://ipwho.is/",
+    mapping: (data) => ({
+      ip: data.ip || '',
+      country_code: data.country_code || '',
+      country: data.country || '',
+      region: data.region || '',
+      city: data.city || '',
+      organization: data.connection?.org || data.connection?.isp || '',
+      asn: data.connection?.asn || 0,
+      asn_organization: data.connection?.isp || '',
+      longitude: data.longitude || 0,
+      latitude: data.latitude || 0,
+      timezone: data.timezone?.id || '',
+    }),
   },
 ];
 
-// 随机打乱服务列表顺序
+// 随机性服务列表洗牌函数
 function shuffleServices() {
-  return [...IP_CHECK_SERVICES].sort(() => Math.random() - 0.5);
+  // 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