增加首页背景图设置

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

@@ -36,6 +36,7 @@ export async function POST(request: NextRequest) {
       cacheMinutes,
       loginBackgroundImage,
       registerBackgroundImage,
+      homeBackgroundImage,
       progressThumbType,
       progressThumbPresetId,
       progressThumbCustomUrl,
@@ -47,6 +48,7 @@ export async function POST(request: NextRequest) {
       cacheMinutes: number;
       loginBackgroundImage?: string;
       registerBackgroundImage?: string;
+      homeBackgroundImage?: string;
       progressThumbType?: 'default' | 'preset' | 'custom';
       progressThumbPresetId?: string;
       progressThumbCustomUrl?: string;
@@ -96,6 +98,22 @@ export async function POST(request: NextRequest) {
       }
     }
 
+    if (homeBackgroundImage && homeBackgroundImage.trim() !== '') {
+      const urls = homeBackgroundImage
+        .split('\n')
+        .map((url) => url.trim())
+        .filter((url) => url !== '');
+
+      for (const url of urls) {
+        if (!url.startsWith('http://') && !url.startsWith('https://')) {
+          return NextResponse.json(
+            { error: `首页背景图URL格式错误：${url}，每个URL必须以http://或https://开头` },
+            { status: 400 }
+          );
+        }
+      }
+    }
+
     const adminConfig = await getConfig();
 
     // 权限校验 - 使用v2用户系统
@@ -124,6 +142,7 @@ export async function POST(request: NextRequest) {
       cacheVersion: cssChanged ? currentVersion + 1 : currentVersion,
       loginBackgroundImage: loginBackgroundImage?.trim() || undefined,
       registerBackgroundImage: registerBackgroundImage?.trim() || undefined,
+      homeBackgroundImage: homeBackgroundImage?.trim() || undefined,
       progressThumbType: progressThumbType || 'default',
       progressThumbPresetId: progressThumbPresetId?.trim() || undefined,
       progressThumbCustomUrl: progressThumbCustomUrl?.trim() || undefined,