refactor: wip to nestjs

packages/server-nest/src/modules/Vendors/commands/EditVendor.service.ts

@@ -0,0 +1,65 @@
+import {
+  IVendorEditDTO,
+  IVendorEventEditedPayload,
+  IVendorEventEditingPayload,
+} from '../types/Vendors.types';
+import { Knex } from 'knex';
+import { Inject, Injectable } from '@nestjs/common';
+import { CreateEditVendorDTOService } from './CreateEditVendorDTO';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { UnitOfWork } from '@/modules/Tenancy/TenancyDB/UnitOfWork.service';
+import { Vendor } from '../models/Vendor';
+import { events } from '@/common/events/events';
+
+@Injectable()
+export class EditVendorService {
+  constructor(
+    private readonly eventPublisher: EventEmitter2,
+    private readonly uow: UnitOfWork,
+    private readonly transformDTO: CreateEditVendorDTOService,
+
+    @Inject(Vendor.name) private readonly vendorModel: typeof Vendor,
+  ) {}
+
+  /**
+   * Edits details of the given vendor.
+   * @param   {number} vendorId -
+   * @param   {IVendorEditDTO} vendorDTO -
+   * @returns {Promise<IVendor>}
+   */
+  public async editVendor(vendorId: number, vendorDTO: IVendorEditDTO) {
+    // Retrieve the vendor or throw not found error.
+    const oldVendor = await this.vendorModel
+      .query()
+      .findById(vendorId)
+      .throwIfNotFound();
+
+    // Transforms vendor DTO to object.
+    const vendorObj = this.transformDTO.transformEditDTO(vendorDTO);
+
+    // Edits vendor contact under unit-of-work environment.
+    return this.uow.withTransaction(async (trx: Knex.Transaction) => {
+      // Triggers `onVendorEditing` event.
+      await this.eventPublisher.emitAsync(events.vendors.onEditing, {
+        trx,
+        vendorDTO,
+      } as IVendorEventEditingPayload);
+
+      // Edits the vendor contact.
+      const vendor = await this.vendorModel
+        .query()
+        .updateAndFetchById(vendorId, {
+          ...vendorObj,
+        });
+
+      // Triggers `onVendorEdited` event.
+      await this.eventPublisher.emitAsync(events.vendors.onEdited, {
+        vendorId,
+        vendor,
+        trx,
+      } as IVendorEventEditedPayload);
+
+      return vendor;
+    });
+  }
+}