import { NextRequest, NextResponse } from 'next/server';
import { trackEvent, EventType, ConversionType } from '@/lib/analytics';

export async function POST(request: NextRequest) {
  try {
    // 解析请求体
    const body = await request.json();
    
    // 验证必要字段
    if (!body.linkId) {
      return NextResponse.json(
        { error: 'Missing required field: linkId' },
        { status: 400 }
      );
    }
    
    if (!body.eventType || !Object.values(EventType).includes(body.eventType)) {
      return NextResponse.json(
        { 
          error: 'Invalid or missing eventType',
          validValues: Object.values(EventType)
        },
        { status: 400 }
      );
    }
    
    // 验证转化类型（如果提供）
    if (
      body.conversionType && 
      !Object.values(ConversionType).includes(body.conversionType)
    ) {
      return NextResponse.json(
        { 
          error: 'Invalid conversionType',
          validValues: Object.values(ConversionType)
        },
        { status: 400 }
      );
    }
    
    // 添加客户端IP
    const clientIp = request.headers.get('x-forwarded-for') || 
                     request.headers.get('x-real-ip') || 
                     '0.0.0.0';
    
    // 添加用户代理
    const userAgent = request.headers.get('user-agent') || '';
    
    // 合并数据
    const eventData = {
      ...body,
      ipAddress: body.ipAddress || clientIp,
      userAgent: body.userAgent || userAgent,
    };
    
    // 追踪事件
    const result = await trackEvent(eventData);
    
    // 返回结果
    return NextResponse.json(result);
  } catch (error) {
    console.error('Error in track API:', error);
    return NextResponse.json(
      { error: 'Failed to track event' },
      { status: 500 }
    );
  }
}