jinshen-website/server/mappers/questionMapper.ts

import { isObject } from '../../server/utils/object';

/**
 * 将 Directus 返回的 QuestionType 类型转换为 QuestionTypeView 视图模型
 *
 * @param raw: 原始的 QuestionType 数据
 * @returns 转换后的 QuestionTypeView 对象
 *
 * @example
 * const view = toQuestionTypeView(rawQuestionType);
 */
export function toQuestionTypeView(
  raw: QuestionType | string | null
): QuestionTypeView {
  if (typeof raw === 'string' || raw === null) {
    return {
      id: '-1',
      name: '',
    } satisfies QuestionTypeView;
  }
  const trans = raw.translations?.[0];

  return {
    id: raw.id.toString(),
    name: trans?.name ?? '',
  };
}

/**
 * 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];

  const type = toQuestionTypeView(raw.type ?? null);

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

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

      return {
        id: item.id.toString(),
        name: translations?.name ?? '',
        type: product_type,
      };
    });

  return {
    id: raw.id.toString(),
    type: type,
    title: trans?.title ?? '',
    content: trans?.content ?? '',
    products: related_products,
  };
}