bigcapital/packages/server/src/services/Sales/Invoices/SaleInvoiceWriteoffSubscriber.ts

import { Inject, Service } from 'typedi';
import events from '@/subscribers/events';
import {
  ISaleInvoiceWriteoffCreatePayload,
  ISaleInvoiceWrittenOffCanceledPayload,
} from '@/interfaces';
import { SaleInvoiceWriteoffGLStorage } from './SaleInvoiceWriteoffGLStorage';

@Service()
export default class SaleInvoiceWriteoffSubscriber {
  @Inject()
  writeGLStorage: SaleInvoiceWriteoffGLStorage;

  /**
   * Attaches events.
   */
  public attach(bus) {
    bus.subscribe(
      events.saleInvoice.onWrittenoff,
      this.writeJournalEntriesOnceWriteoffCreate
    );
    bus.subscribe(
      events.saleInvoice.onWrittenoffCanceled,
      this.revertJournalEntriesOnce
    );
  }
  /**
   * Write the written-off sale invoice journal entries.
   * @param {ISaleInvoiceWriteoffCreatePayload}
   */
  private writeJournalEntriesOnceWriteoffCreate = async ({
    tenantId,
    saleInvoice,
    trx,
  }: ISaleInvoiceWriteoffCreatePayload) => {
    await this.writeGLStorage.writeInvoiceWriteoffEntries(
      tenantId,
      saleInvoice.id,
      trx
    );
  };

  /**
   * Reverts the written-of sale invoice jounral entries.
   * @param {ISaleInvoiceWrittenOffCanceledPayload}
   */
  private revertJournalEntriesOnce = async ({
    tenantId,
    saleInvoice,
    trx,
  }: ISaleInvoiceWrittenOffCanceledPayload) => {
    await this.writeGLStorage.revertInvoiceWriteoffEntries(
      tenantId,
      saleInvoice.id,
      trx
    );
  };
}