Fix 500 Internal Server Error: Add error handling for D1 database access in Cloudflare Pages

src/app/layout.tsx

@@ -14,12 +14,19 @@ const inter = Inter({ subsets: ['latin'] });
 // 动态生成 metadata，支持配置更新后的标题变化
 export async function generateMetadata(): Promise<Metadata> {
   let siteName = process.env.SITE_NAME || 'KatelyaTV';
-  if (
-    process.env.NEXT_PUBLIC_STORAGE_TYPE !== 'd1' &&
-    process.env.NEXT_PUBLIC_STORAGE_TYPE !== 'upstash'
-  ) {
-    const config = await getConfig();
-    siteName = config.SiteConfig.SiteName;
+  
+  try {
+    // 只有在非 d1 和 upstash 存储类型时才尝试获取配置
+    if (
+      process.env.NEXT_PUBLIC_STORAGE_TYPE !== 'd1' &&
+      process.env.NEXT_PUBLIC_STORAGE_TYPE !== 'upstash'
+    ) {
+      const config = await getConfig();
+      siteName = config.SiteConfig.SiteName;
+    }
+  } catch (error) {
+    // 如果配置获取失败，使用默认站点名称
+    // siteName 已经有默认值，不需要额外处理
   }
 
   return {

src/lib/config.ts

@@ -225,19 +225,24 @@ async function initConfig() {
 
 export async function getConfig(): Promise<AdminConfig> {
   const storageType = process.env.NEXT_PUBLIC_STORAGE_TYPE || 'localstorage';
+  
   if (process.env.DOCKER_ENV === 'true' || storageType === 'localstorage') {
     await initConfig();
     return cachedConfig;
   }
+  
   // 非 docker 环境且 DB 存储，直接读 db 配置
-  const storage = getStorage();
-  let adminConfig: AdminConfig | null = null;
-  if (storage && typeof (storage as any).getAdminConfig === 'function') {
-    adminConfig = await (storage as any).getAdminConfig();
-  }
-  if (adminConfig) {
-    // 合并一些环境变量配置
-    adminConfig.SiteConfig.SiteName = process.env.SITE_NAME || 'KatelyaTV';
+  try {
+    const storage = getStorage();
+    let adminConfig: AdminConfig | null = null;
+    
+    if (storage && typeof (storage as any).getAdminConfig === 'function') {
+      adminConfig = await (storage as any).getAdminConfig();
+    }
+    
+    if (adminConfig) {
+      // 合并一些环境变量配置
+      adminConfig.SiteConfig.SiteName = process.env.SITE_NAME || 'KatelyaTV';
     adminConfig.SiteConfig.Announcement =
       process.env.ANNOUNCEMENT ||
       '本网站仅提供影视信息搜索服务，所有内容均来自第三方网站。本站不存储任何视频资源，不对任何内容的准确性、合法性、完整性负责。';
@@ -306,6 +311,11 @@ export async function getConfig(): Promise<AdminConfig> {
     await initConfig();
   }
   return cachedConfig;
+  } catch (error) {
+    // 如果数据库访问失败，回退到默认配置
+    await initConfig();
+    return cachedConfig;
+  }
 }
 
 export async function resetConfig() {

src/lib/d1.db.ts

@@ -39,7 +39,22 @@ interface D1ExecResult {
 
 // 获取全局D1数据库实例
 function getD1Database(): D1Database {
-  return (process.env as any).DB as D1Database;
+  // 在 Cloudflare Pages/Workers 环境中，DB 是全局变量
+  if (typeof globalThis !== 'undefined' && (globalThis as any).DB) {
+    return (globalThis as any).DB as D1Database;
+  }
+  
+  // 回退到 process.env（用于本地开发）
+  if ((process.env as any).DB) {
+    return (process.env as any).DB as D1Database;
+  }
+  
+  // 最后尝试从 globalThis.process.env
+  if (typeof globalThis !== 'undefined' && (globalThis as any).process?.env?.DB) {
+    return (globalThis as any).process.env.DB as D1Database;
+  }
+  
+  throw new Error('D1 database not available. Make sure DB binding is configured.');
 }
 
 export class D1Storage implements IStorage {