/**
 * 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] ?? {
    title: '',
  };

  const fileId = typeof raw.file === 'string' ? raw.file : raw.file?.id;
  const file = raw.file as DirectusFile;

  const { getFileUrl } = useDirectusFiles();

  const url = getFileUrl(fileId);

  return {
    id: raw.id,
    filename: file.filename_download,
    title: trans.title,
    url: url,
    size: file.filesize,
  };
}

/**
 * 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] ?? { title: '' };

  const fileId = typeof raw.file === 'string' ? raw.file : raw.file?.id;
  const file = raw.file as DirectusFile;

  const { getFileUrl } = useDirectusFiles();
  const url = getFileUrl(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,
          name: item.product_type.translations?.[0]?.name,
        } satisfies DocumentListProductType);
      return {
        id: item.id,
        name: item.translations?.[0]?.name,
        type: productType,
      };
    });

  return {
    id: raw.id,
    filename: file.filename_download,
    title: trans.title,
    url: url,
    size: file.filesize,
    products: related_products,
  };
}