import { cache } from 'react';

import { getProductCategories } from '@lib/data/categories';
import { listProductTypes } from '@lib/data/products';
import { listRegions } from '@lib/data/regions';

import { OrderAnalysisCard } from '../../_components/order-analyses-cards';
import { ServiceCategory } from '../../_components/service-categories';

async function countryCodesLoader() {
  const countryCodes = await listRegions().then((regions) =>
    regions?.map((r) => r.countries?.map((c) => c.iso_2)).flat(),
  );
  return countryCodes ?? [];
}
export const loadCountryCodes = cache(countryCodesLoader);

async function productCategoriesLoader() {
  const productCategories = await getProductCategories({
    fields: '*products, *products.variants, is_active',
  });
  return productCategories.product_categories ?? [];
}
export const loadProductCategories = cache(productCategoriesLoader);

async function productTypesLoader() {
  const { productTypes } = await listProductTypes();
  return productTypes ?? [];
}
export const loadProductTypes = cache(productTypesLoader);

async function analysesLoader() {
  const [countryCodes, productCategories] = await Promise.all([
    loadCountryCodes(),
    loadProductCategories(),
  ]);
  const countryCode = countryCodes[0]!;

  const category = productCategories.find(
    ({ metadata }) => metadata?.page === 'order-analysis',
  );
  const serviceCategories = productCategories.filter(
    ({ parent_category }) => parent_category?.handle === 'tto-categories',
  );

  return {
    analyses:
      category?.products?.map<OrderAnalysisCard>(
        ({ title, description, subtitle, variants, status, metadata }) => {
          const variant = variants![0]!;
          return {
            title,
            description,
            subtitle,
            variant: {
              id: variant.id,
            },
            isAvailable:
              status === 'published' && !!metadata?.analysisIdOriginal,
          };
        },
      ) ?? [],
    countryCode,
  };
}
export const loadAnalyses = cache(analysesLoader);