import { PrismaClient } from '@prisma/client';

async function main() {
  const prisma = new PrismaClient();

  const invoicesWithoutDoc = await prisma.clientInvoice.findMany({
    where: {
      documents: { none: { documentType: 'INVOICE' } },
    },
    include: {
      order: { select: { id: true, clientId: true, managerId: true } },
    },
  });

  console.log(`Found ${invoicesWithoutDoc.length} invoices without Document.`);

  let created = 0;
  for (const inv of invoicesWithoutDoc) {
    if (!inv.order) {
      console.warn(`Invoice ${inv.id} has no order — skipping.`);
      continue;
    }

    await prisma.document.create({
      data: {
        documentType: 'INVOICE',
        direction: 'CLIENT',
        title: `Счёт ${inv.invoiceNumber}`,
        documentReference: inv.invoiceNumber,
        orderId: inv.order.id,
        clientId: inv.order.clientId,
        clientInvoiceId: inv.id,
        responsibleId: inv.order.managerId,
        createdAt: inv.createdAt,
        sentAt: inv.status === 'ISSUED' || inv.status === 'PAID' ? inv.updatedAt : null,
        closedAt: inv.status === 'CANCELLED' ? inv.updatedAt : null,
      },
    });
    console.log(`  ✓ Invoice #${inv.id} (${inv.invoiceNumber}) → Document created`);
    created++;
  }

  console.log(`Created ${created} Documents (backfill complete).`);
  await prisma.$disconnect();
}

main().catch((err) => {
  console.error(err);
  process.exit(1);
});