GetCategory

import { defineApi } from "@vsf-enterprise/unified-api-bigcommerce";
import { getCategorySlugFromUrl } from "@vsf-enterprise/unified-api-bigcommerce";
import type { CategoryTree, BigcommerceIntegrationContext } from "@vsf-enterprise/bigcommerce-api";
import type { GetCategoryArgs } from "@vsf-enterprise/unified-api-bigcommerce/udl";
import { getNormalizers } from "@vue-storefront/unified-data-model";

interface RawResult {
  ancestors: CategoryTree[];
  category: CategoryTree;
}

export const getCategory = defineApi.getCategory(async (context, args) => {
  const { normalizeCategory } = getNormalizers(context);
  const rawResult = await getRawCategory(context, args);

  return {
    ancestors: rawResult.ancestors.map((category) => normalizeCategory(category)),
    category: normalizeCategory(rawResult.category),
  };
});

export async function getRawCategory(
  context: BigcommerceIntegrationContext,
  args: GetCategoryArgs,
): Promise<RawResult> {
  const { data } = await context.api.getCategoryTree();
  let rawResult: RawResult | null = null;

  // eslint-disable-next-line complexity
  const searchCategory = (tree: CategoryTree[], ancestors: CategoryTree[]) => {
    for (const category of tree) {
      if (
        category.id.toString() === args.id ||
        (category.url && getCategorySlugFromUrl(category.url) === args.id)
      ) {
        rawResult = {
          category,
          ancestors: [...ancestors],
        };
        return;
      } else if (category.children && category.children.length > 0) {
        ancestors.push(category);
        searchCategory(category.children, ancestors);
        ancestors.pop(); // Remove the last ancestor for backtracking
      }
    }
  };

  searchCategory(data, []);

  if (!rawResult) {
    throw { statusCode: 404, message: "Category not found" };
  }

  return rawResult;
}