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

// PUT /api/levels/reorder - Batch update sort order
export async function PUT(request: NextRequest) {
  try {
    const session = await auth.api.getSession({
      headers: request.headers,
    })

    if (!session) {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }

    const body = await request.json()
    const { orders } = body as { orders: { id: string; sortOrder: number }[] }

    if (!Array.isArray(orders)) {
      return NextResponse.json(
        { error: 'orders must be an array' },
        { status: 400 }
      )
    }

    // Update each level's sort order in a transaction
    await prisma.$transaction(
      orders.map((item) =>
        prisma.level.update({
          where: { id: item.id },
          data: { sortOrder: item.sortOrder },
        })
      )
    )

    return NextResponse.json({ success: true })
  } catch (error) {
    console.error('Error reordering levels:', error)
    return NextResponse.json(
      { error: 'Failed to reorder levels' },
      { status: 500 }
    )
  }
}