import { NextRequest, NextResponse } from "next/server";
import { prisma } from "prisma/client";
import * as XLSX from "xlsx";

export async function POST(request: NextRequest) {
  const searchParams = request.nextUrl.searchParams
  const companyId = searchParams.get('companyId')

  if (!companyId) return NextResponse.json({ error: 'Bad Request. Missing companyId' }, { status: 400 })
  const intCompanyId = parseInt(companyId)

  const body = await request.arrayBuffer();
  const workbook = XLSX.read(body, { type: 'buffer' })
  const worksheetName = workbook.SheetNames[0]
  const worksheet = workbook.Sheets[worksheetName]
  const fileData: any[] = XLSX.utils.sheet_to_json(worksheet, { header: 1 })
  fileData.shift();

  const newProducts = fileData.map(row => ({
    id: undefined,
    isDifferent: false,
    name: row[0].toString(),
    barcode: row[1].toString(),
    itemCode: row[2].toString(),
    onhandQty: row[3],
    differenceQty: row[4],
    companyId: row[5],
    externalId: row[6] ?? null
  }));

  const whereCompany = { companyId: intCompanyId }

  await prisma.stockOpname.deleteMany({ where: whereCompany })
  await prisma.product.deleteMany({ where: whereCompany })

  await prisma.product.createMany({ data: newProducts })

  return NextResponse.json(true)
}