import { NextRequest, NextResponse } from 'next/server'
import { cookies } from 'next/headers'

// GET /api/referrals/link - Get referral link for current user
export async function GET(request: NextRequest) {
  try {
    const cookieStore = cookies()
    const buyerIdCookie = cookieStore.get('buyer_id')?.value

    if (!buyerIdCookie) {
      return NextResponse.json(
        { error: 'Authentication required' },
        { status: 401 }
      )
    }

    const buyer_id = parseInt(buyerIdCookie, 10)

    // Get base URL
    const baseUrl = process.env.NEXT_PUBLIC_BASE_URL || 
                   request.headers.get('origin') || 
                   'http://localhost:3000'

    // Create referral link with buyer_id as referral parameter
    const referralLink = `${baseUrl}?ref=${buyer_id}`

    return NextResponse.json({
      referralLink,
      referralId: buyer_id,
    })
  } catch (error) {
    console.error('Error generating referral link:', error)
    return NextResponse.json(
      { error: 'Failed to generate referral link' },
      { status: 500 }
    )
  }
}