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

/**
 * 将 Directus 返回的 Document 数据转换为 ProductDocumentView 视图模型
 *
 * @param raw: 原始的 Document 数据
 * @returns 转换后的 ProductDocumentView 对象
 *
 * @example
 * const view = toProductDocumentView(rawDocument);
 */
export function toProductDocumentView(
  raw: ProductDocument
): ProductDocumentView {
  const trans = raw.translations?.[0];
  const file = isObject<DirectusFile>(raw.file) ? raw.file : undefined;
  const fileId = file?.id ?? '';

  const url = `/api/assets/${fileId}`;

  return {
    id: raw.id.toString(),
    fileId: fileId,
    filename: file?.filename_download ?? '',
    title: trans?.title ?? '',
    url: url,
    size: file?.filesize ?? 0,
  };
}

/**
 * 将 Directus 返回的 Document 数据转换为 DocumentListView 视图模型
 *
 * @param raw: 原始的 Document 数据
 * @returns 转换后的 DocumentListView 对象
 *
 * @example
 * const view = toDocumentListView(rawDocument);
 */
export function toDocumentListView(raw: ProductDocument): DocumentListView {
  const trans = raw.translations?.[0];

  const file = isObject<DirectusFile>(raw.file) ? raw.file : undefined;
  const fileId = file?.id ?? '';

  const url = `/api/assets/${fileId}`;

  const related_products: DocumentListProduct[] = (raw.products ?? [])
    .filter(isObject<ProductsProductDocument>)
    .map((item) => item.products_id)
    .filter(isObject<Product>)
    .map((item) => {
      const productType = isObject<ProductType>(item.product_type)
        ? ({
            id: item.product_type.id.toString(),
            name: item.product_type.translations?.[0]?.name ?? '',
          } satisfies DocumentListProductType)
        : ({
            id: '',
            name: '',
          } satisfies DocumentListProductType);
      return {
        id: item.id.toString(),
        name: item.translations?.[0]?.name ?? '',
        type: productType,
      };
    });

  return {
    id: raw.id.toString(),
    fileId: fileId,
    filename: file?.filename_download ?? '',
    title: trans?.title ?? '',
    url: url,
    size: file?.filesize ?? 0,
    products: related_products,
  };
}