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

packages/server/src/services/Sales/Estimates/DeliverSaleEstimate.ts

@@ -0,0 +1,71 @@
+import { ServiceError } from '@/exceptions';
+import {
+  ISaleEstimateEventDeliveredPayload,
+  ISaleEstimateEventDeliveringPayload,
+} from '@/interfaces';
+import events from '@/subscribers/events';
+import { Knex } from 'knex';
+import { Inject, Service } from 'typedi';
+import UnitOfWork from '@/services/UnitOfWork';
+import { EventPublisher } from '@/lib/EventPublisher/EventPublisher';
+import HasTenancyService from '@/services/Tenancy/TenancyService';
+import { ERRORS } from './constants';
+import moment from 'moment';
+
+@Service()
+export class DeliverSaleEstimate {
+  @Inject()
+  private tenancy: HasTenancyService;
+
+  @Inject()
+  private eventPublisher: EventPublisher;
+
+  @Inject()
+  private uow: UnitOfWork;
+
+  /**
+   * Mark the sale estimate as delivered.
+   * @param {number} tenantId - Tenant id.
+   * @param {number} saleEstimateId - Sale estimate id.
+   */
+  public async deliverSaleEstimate(
+    tenantId: number,
+    saleEstimateId: number
+  ): Promise<void> {
+    const { SaleEstimate } = this.tenancy.models(tenantId);
+
+    // Retrieve details of the given sale estimate id.
+    const oldSaleEstimate = await SaleEstimate.query()
+      .findById(saleEstimateId)
+      .throwIfNotFound();
+
+    // Throws error in case the sale estimate already published.
+    if (oldSaleEstimate.isDelivered) {
+      throw new ServiceError(ERRORS.SALE_ESTIMATE_ALREADY_DELIVERED);
+    }
+    // Updates the sale estimate transaction with assocaited transactions
+    // under UOW envirement.
+    return this.uow.withTransaction(tenantId, async (trx: Knex.Transaction) => {
+      // Triggers `onSaleEstimateDelivering` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onDelivering, {
+        oldSaleEstimate,
+        trx,
+        tenantId,
+      } as ISaleEstimateEventDeliveringPayload);
+
+      // Record the delivered at on the storage.
+      const saleEstimate = await SaleEstimate.query(trx).patchAndFetchById(
+        saleEstimateId,
+        {
+          deliveredAt: moment().toMySqlDateTime(),
+        }
+      );
+      // Triggers `onSaleEstimateDelivered` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onDelivered, {
+        tenantId,
+        saleEstimate,
+        trx,
+      } as ISaleEstimateEventDeliveredPayload);
+    });
+  }
+}