新增基于lxserver的音乐功能

src/lib/music-v2-api.ts

@@ -0,0 +1,33 @@
+import { NextRequest, NextResponse } from 'next/server';
+
+import { getAuthInfoFromCookie } from '@/lib/auth';
+import { db } from '@/lib/db';
+
+export async function getMusicV2Username(request: NextRequest): Promise<string | null> {
+  const authInfo = getAuthInfoFromCookie(request);
+  if (!authInfo?.username) return null;
+
+  if (authInfo.username !== process.env.USERNAME) {
+    const userInfo = await db.getUserInfoV2(authInfo.username);
+    if (!userInfo || userInfo.banned) {
+      return null;
+    }
+  }
+
+  return authInfo.username;
+}
+
+export function unauthorized() {
+  return NextResponse.json({ success: false, error: { code: 'UNAUTHORIZED', message: 'Unauthorized' } }, { status: 401 });
+}
+
+export function badRequest(message: string, code = 'BAD_REQUEST') {
+  return NextResponse.json({ success: false, error: { code, message } }, { status: 400 });
+}
+
+export function internalError(message: string, details?: string) {
+  return NextResponse.json(
+    { success: false, error: { code: 'INTERNAL_ERROR', message, details } },
+    { status: 500 }
+  );
+}