Initial TrueGrowth source import

2026-07-07 09:36:36 +08:00
commit 3b6781d695
2283 changed files with 691996 additions and 0 deletions
--- a/apps/web/public/cdn-config.js
+++ b/apps/web/public/cdn-config.js
@@ -0,0 +1,236 @@
+/**
+ * CDN 智能选择器 - 在主应用加载前运行
+ * 
+ * 功能：
+ * 1. 检测可用的 CDN 源
+ * 2. 选择最快的 CDN
+ * 3. 将选择结果存储到 localStorage
+ * 4. 供 Service Worker 使用
+ * 
+ * 使用方式：
+ * 在 index.html 的 <head> 中添加:
+ * <script src="cdn-config.js"></script>
+ */
+
+(function() {
+  var CDN_GLOBAL_KEY = '__OPENTU_CDN__';
+  var CDN_API_GLOBAL_KEY = '__OPENTU_CDN_API__';
+  var LEGACY_CDN_GLOBAL_KEY = '__AITU_CDN__';
+  var LEGACY_CDN_API_GLOBAL_KEY = '__AITU_CDN_API__';
+  var STORAGE_KEY = 'opentu-cdn-preference';
+  var LEGACY_STORAGE_KEY = 'aitu-cdn-preference';
+
+  function setCDNPreference(value) {
+    window[CDN_GLOBAL_KEY] = value;
+    window[LEGACY_CDN_GLOBAL_KEY] = value;
+  }
+
+  function getCDNPreference() {
+    return window[CDN_GLOBAL_KEY] || window[LEGACY_CDN_GLOBAL_KEY] || null;
+  }
+
+  function isSupportedCDNName(name) {
+    for (var i = 0; i < CDN_SOURCES.length; i++) {
+      if (CDN_SOURCES[i].name === name) {
+        return true;
+      }
+    }
+    return name === 'local';
+  }
+
+  function setCDNApi(api) {
+    window[CDN_API_GLOBAL_KEY] = api;
+    window[LEGACY_CDN_API_GLOBAL_KEY] = api;
+  }
+  
+
+  // 开发模式检测 - 本地开发时跳过 CDN 逻辑
+  var isDevelopment = window.location.hostname === 'localhost' || 
+                      window.location.hostname === '127.0.0.1' ||
+                      window.location.hostname.endsWith('.localhost');
+  
+  if (isDevelopment) {
+    setCDNPreference({ cdn: 'local', latency: 0, timestamp: Date.now(), isDevelopment: true });
+    setCDNApi({
+      selectBestCDN: function() { return Promise.resolve(getCDNPreference()); },
+      getCDNBaseUrl: function() { return null; },
+      clearCDNCache: function() {},
+      reselectCDN: function() { return Promise.resolve(getCDNPreference()); },
+      sources: [],
+      config: {},
+      isDevelopment: true,
+    });
+    return; // 直接返回，不执行 CDN 检测
+  }
+
+  // 配置
+  var CONFIG = {
+    packageName: 'aitu-app',
+    storageKey: STORAGE_KEY,
+    testTimeout: 5000, // 测试超时时间（毫秒）
+    cacheExpiry: 3600000, // 缓存过期时间（1小时）
+  };
+
+  // 运行时 CDN 候选：主 CDN 优先，备用 CDN 兜底
+  var CDN_SOURCES = [
+    {
+      name: 'jsdelivr',
+      baseUrl: 'https://cdn.jsdelivr.net/npm/' + CONFIG.packageName,
+      testPath: '/version.json',
+    },
+  ];
+
+  /**
+   * 测试单个 CDN 的响应时间
+   */
+  function testCDN(source) {
+    return new Promise(function(resolve) {
+      var startTime = Date.now();
+      var testUrl = source.baseUrl + source.testPath + '?t=' + startTime;
+      
+      var xhr = new XMLHttpRequest();
+      xhr.timeout = CONFIG.testTimeout;
+      
+      xhr.onload = function() {
+        if (xhr.status === 200) {
+          var latency = Date.now() - startTime;
+          resolve({ name: source.name, latency: latency, success: true });
+        } else {
+          resolve({ name: source.name, latency: Infinity, success: false });
+        }
+      };
+      
+      xhr.onerror = function() {
+        resolve({ name: source.name, latency: Infinity, success: false });
+      };
+      
+      xhr.ontimeout = function() {
+        resolve({ name: source.name, latency: Infinity, success: false });
+      };
+      
+      xhr.open('GET', testUrl, true);
+      xhr.send();
+    });
+  }
+
+  /**
+   * 选择最快的 CDN
+   */
+  function selectBestCDN() {
+    // 检查缓存
+    try {
+      var cached =
+        localStorage.getItem(CONFIG.storageKey) ||
+        localStorage.getItem(LEGACY_STORAGE_KEY);
+      if (cached) {
+        var data = JSON.parse(cached);
+        if (
+          Date.now() - data.timestamp < CONFIG.cacheExpiry &&
+          isSupportedCDNName(data.cdn)
+        ) {
+          setCDNPreference(data);
+          return Promise.resolve(data);
+        }
+
+        if (!isSupportedCDNName(data.cdn)) {
+          clearCDNCache();
+        }
+      }
+    } catch (e) {
+      // 忽略解析错误
+    }
+
+    // 并行测试所有 CDN
+    var tests = CDN_SOURCES.map(testCDN);
+    
+    return Promise.all(tests).then(function(results) {
+      // 过滤成功的结果并按延迟排序
+      var successfulResults = results
+        .filter(function(r) { return r.success; })
+        .sort(function(a, b) { return a.latency - b.latency; });
+
+      if (successfulResults.length === 0) {
+        return { cdn: 'local', latency: 0, timestamp: Date.now(), allResults: results };
+      }
+
+      var best = successfulResults[0];
+      var preference = {
+        cdn: best.name,
+        latency: best.latency,
+        timestamp: Date.now(),
+        allResults: results,
+      };
+
+      // 缓存结果
+      try {
+        localStorage.setItem(CONFIG.storageKey, JSON.stringify(preference));
+      } catch (e) {
+        // 忽略存储错误
+      }
+
+      // 暴露到全局变量供 SW 使用
+      setCDNPreference(preference);
+      
+      return preference;
+    });
+  }
+
+  /**
+   * 获取 CDN 基础 URL
+   */
+  function getCDNBaseUrl(cdnName, version) {
+    for (var i = 0; i < CDN_SOURCES.length; i++) {
+      if (CDN_SOURCES[i].name === cdnName) {
+        var baseUrl = CDN_SOURCES[i].baseUrl;
+        if (version) {
+          baseUrl = baseUrl.replace(CONFIG.packageName, CONFIG.packageName + '@' + version);
+        }
+        return baseUrl;
+      }
+    }
+    return null;
+  }
+
+  /**
+   * 清除 CDN 缓存（用于调试）
+   */
+  function clearCDNCache() {
+    try {
+      localStorage.removeItem(CONFIG.storageKey);
+      localStorage.removeItem(LEGACY_STORAGE_KEY);
+      delete window[CDN_GLOBAL_KEY];
+      delete window[LEGACY_CDN_GLOBAL_KEY];
+    } catch (e) {
+      // 忽略
+    }
+  }
+
+  /**
+   * 强制重新选择 CDN
+   */
+  function reselectCDN() {
+    clearCDNCache();
+    return selectBestCDN();
+  }
+
+  // 暴露 API
+  setCDNApi({
+    selectBestCDN: selectBestCDN,
+    getCDNBaseUrl: getCDNBaseUrl,
+    clearCDNCache: clearCDNCache,
+    reselectCDN: reselectCDN,
+    sources: CDN_SOURCES,
+    config: CONFIG,
+  });
+
+  // 页面加载时自动选择 CDN（非阻塞）
+  if (document.readyState === 'loading') {
+    document.addEventListener('DOMContentLoaded', function() {
+      selectBestCDN();
+    });
+  } else {
+    // DOM 已加载完成
+    selectBestCDN();
+  }
+
+})();