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

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

@@ -0,0 +1,34 @@
+import { Service, Inject } from 'typedi';
+import HasTenancyService from '@/services/Tenancy/TenancyService';
+import { InvoicePaymentTransactionTransformer } from './InvoicePaymentTransactionTransformer';
+import { TransformerInjectable } from '@/lib/Transformer/TransformerInjectable';
+
+@Service()
+export class GetInvoicePaymentsService {
+  @Inject()
+  private tenancy: HasTenancyService;
+
+  @Inject()
+  private transformer: TransformerInjectable;
+
+  /**
+   * Retrieve the invoice assocaited payments transactions.
+   * @param {number} tenantId - Tenant id.
+   * @param {number} invoiceId - Invoice id.
+   */
+  public getInvoicePayments = async (tenantId: number, invoiceId: number) => {
+    const { PaymentReceiveEntry } = this.tenancy.models(tenantId);
+
+    const paymentsEntries = await PaymentReceiveEntry.query()
+      .where('invoiceId', invoiceId)
+      .withGraphJoined('payment.depositAccount')
+      .withGraphJoined('invoice')
+      .orderBy('payment:paymentDate', 'ASC');
+
+    return this.transformer.transform(
+      tenantId,
+      paymentsEntries,
+      new InvoicePaymentTransactionTransformer()
+    );
+  };
+}