添加自定义主题支持

src/app/api/theme/css/route.ts

@@ -0,0 +1,74 @@
+/* eslint-disable @typescript-eslint/no-explicit-any,no-console */
+
+import { NextRequest, NextResponse } from 'next/server';
+
+import { getConfig } from '@/lib/config';
+import { getThemeCSS } from '@/styles/themes';
+
+export const runtime = 'nodejs';
+
+export async function GET(request: NextRequest) {
+  try {
+    const adminConfig = await getConfig();
+    const themeConfig = adminConfig.ThemeConfig;
+
+    // 如果没有配置主题，返回空CSS
+    if (!themeConfig) {
+      return new NextResponse('', {
+        headers: {
+          'Content-Type': 'text/css',
+          'Cache-Control': 'no-store',
+        },
+      });
+    }
+
+    let css = '';
+
+    // 如果启用了内置主题，使用内置主题CSS
+    if (themeConfig.enableBuiltInTheme) {
+      css = getThemeCSS(themeConfig.builtInTheme as any);
+    } else {
+      // 否则使用自定义CSS
+      css = themeConfig.customCSS || '';
+    }
+
+    // 设置缓存控制
+    const cacheMinutes = themeConfig.cacheMinutes || 1440; // 默认1天（1440分钟）
+    const maxAge = cacheMinutes * 60; // 转换为秒
+    const staleWhileRevalidate = maxAge * 7; // 过期后7倍时间内可使用旧版本
+    const cacheControl = themeConfig.enableCache
+      ? `public, max-age=${maxAge}, stale-while-revalidate=${staleWhileRevalidate}`
+      : 'no-store';
+
+    // 添加版本号到ETag
+    const etag = `"${themeConfig.cacheVersion}"`;
+
+    // 检查客户端缓存
+    const ifNoneMatch = request.headers.get('if-none-match');
+    if (ifNoneMatch === etag && themeConfig.enableCache) {
+      return new NextResponse(null, {
+        status: 304,
+        headers: {
+          'Cache-Control': cacheControl,
+          ETag: etag,
+        },
+      });
+    }
+
+    return new NextResponse(css, {
+      headers: {
+        'Content-Type': 'text/css; charset=utf-8',
+        'Cache-Control': cacheControl,
+        ETag: etag,
+      },
+    });
+  } catch (error) {
+    console.error('获取主题CSS失败:', error);
+    return new NextResponse('', {
+      headers: {
+        'Content-Type': 'text/css',
+        'Cache-Control': 'no-store',
+      },
+    });
+  }
+}