import { NextRequest, NextResponse } from 'next/server'
import { auth } from '@/auth'
import { prisma } from '@/lib/prisma'

export async function GET(request: NextRequest) {
  try {
    const session = await auth()
    
    if (!session?.user?.id || session.user.role !== 'ADMIN') {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }

    const url = new URL(request.url)
    const status = url.searchParams.get('status')
    const type = url.searchParams.get('type')
    const level = url.searchParams.get('level')
    const page = parseInt(url.searchParams.get('page') || '1')
    const limit = parseInt(url.searchParams.get('limit') || '50')

    const where: any = {}
    
    if (status && status !== 'all') {
      where.status = status
    }
    
    if (type && type !== 'all') {
      where.type = type
    }
    
    if (level && level !== 'all') {
      where.level = parseInt(level)
    }

    const commissions = await prisma.commission.findMany({
      where,
      include: {
        user: {
          select: {
            id: true,
            name: true,
            email: true
          }
        },
        fromUser: {
          select: {
            id: true,
            name: true,
            email: true
          }
        }
      },
      orderBy: {
        createdAt: 'desc'
      },
      skip: (page - 1) * limit,
      take: limit
    })

    const total = await prisma.commission.count({ where })

    return NextResponse.json({
      commissions: commissions || [],
      pagination: {
        page,
        limit,
        total,
        pages: Math.ceil(total / limit)
      }
    })
  } catch (error) {
    console.error('Error fetching admin commissions:', error)
    return NextResponse.json({
      commissions: [],
      pagination: { page: 1, limit: 50, total: 0, pages: 0 }
    })
  }
}