import { NextRequest, NextResponse } from 'next/server';
import { getPopularReferrers } from '@/lib/analytics';

export async function GET(request: NextRequest) {
  try {
    // 获取请求参数
    const { searchParams } = new URL(request.url);
    const linkId = searchParams.get('linkId') || undefined;
    const startDate = searchParams.get('startDate') || undefined;
    const endDate = searchParams.get('endDate') || undefined;
    const type = searchParams.get('type') as 'domain' | 'full' || 'domain';
    const limit = searchParams.get('limit') ? parseInt(searchParams.get('limit') as string, 10) : 10;
    
    // 获取热门引荐来源数据
    const referrersData = await getPopularReferrers(
      startDate,
      endDate,
      linkId,
      type,
      limit
    );
    
    // 返回数据
    return NextResponse.json(referrersData);
  } catch (error) {
    console.error('Error in popular-referrers API:', error);
    return NextResponse.json(
      { error: 'Failed to fetch popular referrers data' },
      { status: 500 }
    );
  }
}