refactor: split the services to multiple service classes (#202)

packages/server/src/services/Sales/Invoices/SaleInvoiceWriteoffGLStorage.ts

@@ -0,0 +1,88 @@
+import { Knex } from 'knex';
+import LedgerStorageService from '@/services/Accounting/LedgerStorageService';
+import HasTenancyService from '@/services/Tenancy/TenancyService';
+import { Service, Inject } from 'typedi';
+import { SaleInvoiceWriteoffGLEntries } from './SaleInvoiceWriteoffGLEntries';
+
+@Service()
+export class SaleInvoiceWriteoffGLStorage {
+  @Inject()
+  private invoiceWriteoffLedger: SaleInvoiceWriteoffGLEntries;
+
+  @Inject()
+  private ledgerStorage: LedgerStorageService;
+
+  @Inject()
+  private tenancy: HasTenancyService;
+
+  /**
+   * Writes the invoice write-off GL entries.
+   * @param   {number} tenantId
+   * @param   {number} saleInvoiceId
+   * @param   {Knex.Transaction} trx
+   * @returns {Promise<void>}
+   */
+  public writeInvoiceWriteoffEntries = async (
+    tenantId: number,
+    saleInvoiceId: number,
+    trx?: Knex.Transaction
+  ) => {
+    const { SaleInvoice } = this.tenancy.models(tenantId);
+    const { accountRepository } = this.tenancy.repositories(tenantId);
+
+    // Retrieves the sale invoice.
+    const saleInvoice = await SaleInvoice.query(trx)
+      .findById(saleInvoiceId)
+      .withGraphFetched('writtenoffExpenseAccount');
+
+    // Find or create the A/R account.
+    const ARAccount = await accountRepository.findOrCreateAccountReceivable(
+      saleInvoice.currencyCode,
+      {},
+      trx
+    );
+    // Retrieves the invoice write-off ledger.
+    const ledger = this.invoiceWriteoffLedger.getInvoiceWriteoffLedger(
+      ARAccount.id,
+      saleInvoice
+    );
+    return this.ledgerStorage.commit(tenantId, ledger, trx);
+  };
+
+  /**
+   * Rewrites the invoice write-off GL entries.
+   * @param   {number} tenantId
+   * @param   {number} saleInvoiceId
+   * @param   {Knex.Transactio} actiontrx
+   * @returns {Promise<void>}
+   */
+  public rewriteInvoiceWriteoffEntries = async (
+    tenantId: number,
+    saleInvoiceId: number,
+    trx?: Knex.Transaction
+  ) => {
+    await this.revertInvoiceWriteoffEntries(tenantId, saleInvoiceId, trx);
+
+    await this.writeInvoiceWriteoffEntries(tenantId, saleInvoiceId, trx);
+  };
+
+  /**
+   * Reverts the invoice write-off GL entries.
+   * @param   {number} tenantId
+   * @param   {number} saleInvoiceId
+   * @param   {Knex.Transaction} trx
+   * @returns {Promise<void>}
+   */
+  public revertInvoiceWriteoffEntries = async (
+    tenantId: number,
+    saleInvoiceId: number,
+    trx?: Knex.Transaction
+  ) => {
+    await this.ledgerStorage.deleteByReference(
+      tenantId,
+      saleInvoiceId,
+      'InvoiceWriteOff',
+      trx
+    );
+  };
+}