bigcapital/packages/server/src/services/Accounts/AccountTransform.ts

import { IAccount, IAccountsStructureType } from '@/interfaces';
import { Transformer } from '@/lib/Transformer/Transformer';
import {
  assocDepthLevelToObjectTree,
  flatToNestedArray,
  formatNumber,
  nestedArrayToFlatten,
} from 'utils';

export class AccountTransformer extends Transformer {
  /**
   * Include these attributes to sale invoice object.
   * @returns {Array}
   */
  public includeAttributes = (): string[] => {
    return ['formattedAmount', 'flattenName', 'bankBalanceFormatted'];
  };

  /**
   * Retrieves the flatten name with all dependants accounts names.
   * @param {IAccount} account -
   * @returns {string}
   */
  public flattenName = (account: IAccount): string => {
    const parentDependantsIds = this.options.accountsGraph.dependantsOf(
      account.id
    );
    const prefixAccounts = parentDependantsIds.map((dependId) => {
      const node = this.options.accountsGraph.getNodeData(dependId);
      return `${node.name}: `;
    });
    return `${prefixAccounts}${account.name}`;
  };

  /**
   * Retrieve formatted account amount.
   * @param {IAccount} invoice
   * @returns {string}
   */
  protected formattedAmount = (account: IAccount): string => {
    return formatNumber(account.amount, { currencyCode: account.currencyCode });
  };

  /**
   * Retrieves the formatted bank balance.
   * @param {IAccount} account
   * @returns {string}
   */
  protected bankBalanceFormatted = (account: IAccount): string => {
    return formatNumber(account.bankBalance, {
      currencyCode: account.currencyCode,
    });
  };

  /**
   * Transformes the accounts collection to flat or nested array.
   * @param {IAccount[]}
   * @returns {IAccount[]}
   */
  protected postCollectionTransform = (accounts: IAccount[]) => {
    // Transfom the flatten to accounts tree.
    const transformed = flatToNestedArray(accounts, {
      id: 'id',
      parentId: 'parentAccountId',
    });
    // Associate `accountLevel` attr to indicate object depth.
    const transformed2 = assocDepthLevelToObjectTree(
      transformed,
      1,
      'accountLevel'
    );
    return this.options.structure === IAccountsStructureType.Flat
      ? nestedArrayToFlatten(transformed2)
      : transformed2;
  };
}