增加漫画展馆功能

src/app/api/manga/_utils.ts

@@ -0,0 +1,23 @@
+import { NextRequest, NextResponse } from 'next/server';
+
+import { getAuthInfoFromCookie } from '@/lib/auth';
+import { db } from '@/lib/db';
+
+export async function getAuthorizedUsername(request: NextRequest): Promise<string | NextResponse> {
+  const authInfo = getAuthInfoFromCookie(request);
+  if (!authInfo || !authInfo.username) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+  }
+
+  if (authInfo.username !== process.env.USERNAME) {
+    const userInfoV2 = await db.getUserInfoV2(authInfo.username);
+    if (!userInfoV2) {
+      return NextResponse.json({ error: '用户不存在' }, { status: 401 });
+    }
+    if (userInfoV2.banned) {
+      return NextResponse.json({ error: '用户已被封禁' }, { status: 401 });
+    }
+  }
+
+  return authInfo.username;
+}