import { NextRequest, NextResponse } from 'next/server'
import pool from '@/lib/db'

// GET /api/buyers - Get all buyers with referral counts
export async function GET(request: NextRequest) {
  try {
    const [rows] = await pool.execute(
      `SELECT 
        b.id, 
        b.username, 
        b.email, 
        b.created_at,
        COALESCE(ref_counts.referral_count, 0) as referral_count
      FROM buyers b
      LEFT JOIN (
        SELECT referrer, COUNT(*) as referral_count
        FROM referrals
        GROUP BY referrer
      ) ref_counts ON b.id = ref_counts.referrer
      ORDER BY b.created_at DESC`
    )
    
    // Add access status for each buyer
    const buyersWithAccess = (rows as any[]).map((buyer: any) => {
      const referralCount = parseInt(buyer.referral_count) || 0
      return {
        ...buyer,
        referral_count: referralCount,
        hasWholesaleAccess: referralCount >= 3,
        hasInnerCircleAccess: referralCount >= 10
      }
    })
    
    return NextResponse.json(buyersWithAccess)
  } catch (error) {
    console.error('Error fetching buyers:', error)
    return NextResponse.json(
      { error: 'Failed to fetch buyers' },
      { status: 500 }
    )
  }
}