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

src/app/layout.tsx

@@ -14,6 +14,9 @@ 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';
+  
+  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'
@@ -21,6 +24,10 @@ export async function generateMetadata(): Promise<Metadata> {
       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 {
     title: siteName,

src/lib/config.ts

@@ -225,16 +225,21 @@ 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
+  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';
@@ -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

@@ -39,9 +39,24 @@ interface D1ExecResult {
 
 // 获取全局D1数据库实例
 function getD1Database(): 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 {
   private db: D1Database | null = null;