/**
 * 将 Directus 返回的 Question 数据转换为 ProductQuestionView 视图模型
 *
 * @param raw: 原始的 Question 数据
 * @returns 转换后的 ProductQuestionView 对象
 *
 * @example
 * const view = toProductQuestionView(rawQuestion);
 */
export function toProductQuestionView(raw: Question): ProductQuestionView {
  const trans = raw.translations?.[0] ?? { title: '', content: '' };

  return {
    id: raw.id,
    title: trans.title,
    content: trans.content,
  };
}

/**
 * 将 Directus 返回的 Question 数据转换为 QuestionListView 视图模型
 *
 * @param raw: 原始的 Question 数据
 * @returns 转换后的 QuestionListView 对象
 * ---
 *  @example
 *  const view = toQuestionListView(rawQuestion);
 */
export function toQuestionListView(raw: Question): QuestionListView {
  const trans = raw.translations?.[0] ?? { title: '', content: '' };

  const related_products: QuestionListProduct[] = (raw.products ?? [])
    .filter(isObject<ProductsQuestion>)
    .map((item) => item.products_id)
    .filter(isObject<Product>)
    .map((item) => {
      const translations = item.translations[0] ?? { name: '' };

      const product_type =
        isObject<ProductType>(item.product_type) &&
        ({
          id: item.product_type.id,
          name: item.product_type.translations[0]?.name ?? '',
        } satisfies QuestionListProductType);

      return {
        id: item.id,
        name: translations.name,
        type: product_type,
      };
    });

  return {
    id: raw.id,
    title: trans.title,
    content: trans.content,
    products: related_products,
  };
}