refactor: migrate credit note and vendor credit services to nestjs

packages/server-nest/src/modules/VendorCredit/commands/EditVendorCredit.service.ts

@@ -0,0 +1,105 @@
+import { Inject, Injectable } from '@nestjs/common';
+import {
+  IVendorCreditEditDTO,
+  IVendorCreditEditedPayload,
+  IVendorCreditEditingPayload,
+} from '../types/VendorCredit.types';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { UnitOfWork } from '@/modules/Tenancy/TenancyDB/UnitOfWork.service';
+import { ItemsEntriesService } from '@/modules/Items/ItemsEntries.service';
+import { VendorCredit } from '../models/VendorCredit';
+import { Contact } from '@/modules/Contacts/models/Contact';
+import { events } from '@/common/events/events';
+
+@Injectable()
+export class EditVendorCreditService {
+  /**
+   * @param {EventEmitter2} eventPublisher - The event emitter service.
+   * @param {UnitOfWork} uow - The unit of work service.
+   * @param {ItemsEntriesService} itemsEntriesService - The items entries service.
+   * @param {typeof VendorCredit} vendorCreditModel - The vendor credit model.
+   * @param {typeof Contact} contactModel - The contact model.
+   */
+  constructor(
+    private readonly eventPublisher: EventEmitter2,
+    private readonly uow: UnitOfWork,
+    private readonly itemsEntriesService: ItemsEntriesService,
+
+    @Inject(VendorCredit.name)
+    private readonly vendorCreditModel: typeof VendorCredit,
+
+    @Inject(Contact.name)
+    private readonly contactModel: typeof Contact,
+  ) {}
+
+  /**
+   * Deletes the given vendor credit.
+   * @param {number} vendorCreditId - Vendor credit id.
+   */
+  public editVendorCredit = async (
+    vendorCreditId: number,
+    vendorCreditDTO: IVendorCreditEditDTO,
+    trx?: Knex.Transaction,
+  ) => {
+    // Retrieve the vendor credit or throw not found service error.
+    const oldVendorCredit = await this.vendorCreditModel
+      .query()
+      .findById(vendorCreditId)
+      .throwIfNotFound();
+
+    // Validate customer existance.
+    const vendor = await this.contactModel
+      .query()
+      .modify('vendor')
+      .findById(vendorCreditDTO.vendorId)
+      .throwIfNotFound();
+
+    // Validate items ids existance.
+    await this.itemsEntriesService.validateItemsIdsExistance(
+      vendorCreditDTO.entries,
+    );
+    // Validate non-sellable entries items.
+    await this.itemsEntriesService.validateNonSellableEntriesItems(
+      vendorCreditDTO.entries,
+    );
+    // Validate the items entries existance.
+    await this.itemsEntriesService.validateEntriesIdsExistance(
+      vendorCreditId,
+      'VendorCredit',
+      vendorCreditDTO.entries,
+    );
+    // Transformes edit DTO to model storage layer.
+    const vendorCreditModel = this.transformCreateEditDTOToModel(
+      vendorCreditDTO,
+      vendor.currencyCode,
+      oldVendorCredit,
+    );
+    // Edits the vendor credit graph under unit-of-work envirement.
+    return this.uow.withTransaction(async (trx) => {
+      // Triggers `onVendorCreditEditing` event.
+      await this.eventPublisher.emitAsync(events.vendorCredit.onEditing, {
+        oldVendorCredit,
+        vendorCreditDTO,
+        trx,
+      } as IVendorCreditEditingPayload);
+
+      // Saves the vendor credit graph to the storage.
+      const vendorCredit = await this.vendorCreditModel
+        .query(trx)
+        .upsertGraphAndFetch({
+          id: vendorCreditId,
+          ...vendorCreditModel,
+        });
+      // Triggers `onVendorCreditEdited event.
+      await this.eventPublisher.emitAsync(events.vendorCredit.onEdited, {
+        oldVendorCredit,
+        vendorCredit,
+        vendorCreditId,
+        vendorCreditDTO,
+        trx,
+      } as IVendorCreditEditedPayload);
+
+      return vendorCredit;
+    }, trx);
+  };
+}