import 'dotenv/config';

import { prisma } from '../src/prisma-client.js';

function normalizeText(value) {
  return String(value ?? '').replaceAll(/\s+/g, ' ').trim();
}

function sentenceCase(value) {
  if (!value) {
    return value;
  }

  return value[0].toUpperCase() + value.slice(1);
}

function parseProductName(name) {
  const normalizedName = normalizeText(name);
  const [productTypeRaw] = normalizedName.split(',');
  const sizeMatch = normalizedName.match(/(\d+)\s*[xх*]\s*(\d+)\s*м/i);
  const thicknessMatch = normalizedName.match(/(\d+)\s*мкм/i);
  const sleeveMatch = normalizedName.match(/втулка\s+([^,]+)/i);
  const quantityMatch = normalizedName.match(/короб\s+([^,]+)/i);

  if (!productTypeRaw || !sizeMatch || !thicknessMatch || !sleeveMatch || !quantityMatch) {
    throw new Error(`Unable to parse product name: ${name}`);
  }

  return {
    productType: normalizeText(productTypeRaw).toLowerCase(),
    widthMm: Number.parseInt(sizeMatch[1] ?? '', 10),
    lengthM: Number.parseInt(sizeMatch[2] ?? '', 10),
    thicknessMicron: Number.parseInt(thicknessMatch[1] ?? '', 10),
    sleeveBrand: normalizeText(sleeveMatch[1]).toLowerCase(),
    quantityPerBox: normalizeText(quantityMatch[1]),
  };
}

const products = await prisma.product.findMany({
  where: {
    isActive: true,
    OR: [
      { productType: null },
      { widthMm: null },
      { lengthM: null },
      { thicknessMicron: null },
      { sleeveBrand: null },
      { quantityPerBox: null },
    ],
  },
  select: {
    id: true,
    sku: true,
    name: true,
  },
});

for (const product of products) {
  const parsed = parseProductName(product.name);

  await prisma.product.update({
    where: { id: product.id },
    data: {
      productType: sentenceCase(parsed.productType),
      widthMm: parsed.widthMm,
      lengthM: parsed.lengthM,
      thicknessMicron: parsed.thicknessMicron,
      sleeveBrand: parsed.sleeveBrand,
      quantityPerBox: parsed.quantityPerBox,
    },
  });
}

console.log(`Backfilled ${products.length} products.`);
await prisma.$disconnect();