import 'dotenv/config';

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

const CATALOG_PAGES = ['https://fregat.org/catalog/', 'https://fregat.org/catalog/page/2/'];
const managerEmail = 'manager@fregat.local';
const clientEmail = 'client@fregat.local';

function decodeHtmlEntities(value) {
  return value
    .replaceAll(' ', ' ')
    .replaceAll('&', '&')
    .replaceAll('"', '"')
    .replaceAll(''', "'")
    .replaceAll('«', '«')
    .replaceAll('»', '»')
    .replaceAll('—', '—')
    .replaceAll('–', '-');
}

function normalizeText(value) {
  return decodeHtmlEntities(value.replaceAll(/<[^>]*>/g, ' ').replaceAll(/\s+/g, ' ')).trim();
}

function skuFromHref(href, index) {
  const pathname = href.replace(/^https?:\/\/[^/]+/i, '').split('?')[0] || '';
  const segments = pathname.split('/').filter(Boolean);
  const slug = segments[segments.length - 1] ?? '';
  if (!slug) {
    return `FREGAT-CATALOG-${String(index + 1).padStart(3, '0')}`;
  }
  const normalized = slug.toUpperCase().replaceAll(/[^A-Z0-9]+/g, '-').replace(/^-+|-+$/g, '');
  return `FREGAT-${normalized || String(index + 1).padStart(3, '0')}`;
}

function parseCatalogCards(html) {
  const cards = [];
  const cardRegex = /<a([^>]*)class="[^"]*product-card[^"]*"([^>]*)>([\s\S]*?)<\/a>/g;

  let match;
  while ((match = cardRegex.exec(html)) !== null) {
    const attrs = `${match[1]} ${match[2]}`;
    const body = match[3];
    const hrefMatch = attrs.match(/href="([^"]+)"/);
    const titleMatch = body.match(/<div class="product-card__title">([\s\S]*?)<\/div>/);
    const typeMatch = body.match(/<div class="product-card__type">([\s\S]*?)<\/div>/);
    const href = hrefMatch?.[1] ?? '';
    const title = normalizeText(titleMatch?.[1] ?? '');
    const type = normalizeText(typeMatch?.[1] ?? '');
    if (!title) {
      continue;
    }
    cards.push({ href, title, type });
  }

  return cards;
}

async function loadCatalogProducts() {
  const parsed = [];

  for (const pageUrl of CATALOG_PAGES) {
    const response = await fetch(pageUrl, { redirect: 'follow' });
    if (!response.ok) {
      throw new Error(`Catalog request failed: ${pageUrl} (${response.status})`);
    }
    const html = await response.text();
    const cards = parseCatalogCards(html);
    if (!cards.length) {
      throw new Error(`No product cards found at ${pageUrl}`);
    }
    parsed.push(...cards);
  }

  const deduped = new Map();
  for (const [index, card] of parsed.entries()) {
    const sku = skuFromHref(card.href, index);
    if (deduped.has(sku)) {
      continue;
    }

    const descriptionParts = [];
    if (card.type) {
      descriptionParts.push(card.type);
    }
    descriptionParts.push(`Источник: ${card.href}`);

    deduped.set(sku, {
      sku,
      name: card.title,
      description: descriptionParts.join('. '),
      isCustomizable: /логотип|печать/i.test(`${card.title} ${card.type}`),
      qtyMain: 300 + index * 17,
      qtyReserve: 120 + index * 9,
    });
  }

  return [...deduped.values()];
}

const company = await prisma.company.upsert({
  where: { inn: '7701000000' },
  update: {},
  create: {
    name: 'Fregat Client LLC',
    inn: '7701000000',
  },
});

const manager = await prisma.user.upsert({
  where: { email: managerEmail },
  update: { fullName: 'Default Manager' },
  create: {
    email: managerEmail,
    fullName: 'Default Manager',
    role: 'MANAGER',
  },
});

await prisma.user.upsert({
  where: { email: clientEmail },
  update: { fullName: 'Demo Client', companyId: company.id },
  create: {
    email: clientEmail,
    fullName: 'Demo Client',
    role: 'CLIENT',
    companyId: company.id,
  },
});

const warehouseMain = await prisma.warehouse.upsert({
  where: { code: 'MSK-01' },
  update: { name: 'Main warehouse' },
  create: { code: 'MSK-01', name: 'Main warehouse' },
});

const warehouseReserve = await prisma.warehouse.upsert({
  where: { code: 'SPB-01' },
  update: { name: 'Reserve warehouse' },
  create: { code: 'SPB-01', name: 'Reserve warehouse' },
});

const products = await loadCatalogProducts();
console.log(`Loaded ${products.length} products from fregat.org catalog.`);

for (const product of products) {
  const dbProduct = await prisma.product.upsert({
    where: { sku: product.sku },
    update: {
      name: product.name,
      description: product.description,
      isCustomizable: product.isCustomizable,
      isActive: true,
    },
    create: {
      sku: product.sku,
      name: product.name,
      description: product.description,
      isCustomizable: product.isCustomizable,
      isActive: true,
    },
  });

  await prisma.productStock.upsert({
    where: {
      productId_warehouseId: {
        productId: dbProduct.id,
        warehouseId: warehouseMain.id,
      },
    },
    update: { availableQty: product.qtyMain },
    create: {
      productId: dbProduct.id,
      warehouseId: warehouseMain.id,
      availableQty: product.qtyMain,
    },
  });

  await prisma.productStock.upsert({
    where: {
      productId_warehouseId: {
        productId: dbProduct.id,
        warehouseId: warehouseReserve.id,
      },
    },
    update: { availableQty: product.qtyReserve },
    create: {
      productId: dbProduct.id,
      warehouseId: warehouseReserve.id,
      availableQty: product.qtyReserve,
    },
  });
}

console.log('Seed complete. Use manager header x-user-id:', manager.id);
await prisma.$disconnect();