feat(nestjs): migrate to NestJS

packages/server/src/modules/InventoryAdjutments/commands/DeleteInventoryAdjustment.service.ts

@@ -0,0 +1,73 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Knex } from 'knex';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { events } from '@/common/events/events';
+import {
+  IInventoryAdjustmentDeletingPayload,
+  IInventoryAdjustmentEventDeletedPayload,
+} from '../types/InventoryAdjustments.types';
+import { UnitOfWork } from '@/modules/Tenancy/TenancyDB/UnitOfWork.service';
+import { InventoryAdjustmentEntry } from '../models/InventoryAdjustmentEntry';
+import { InventoryAdjustment } from '../models/InventoryAdjustment';
+import { TenantModelProxy } from '@/modules/System/models/TenantBaseModel';
+
+@Injectable()
+export class DeleteInventoryAdjustmentService {
+  constructor(
+    private readonly eventEmitter: EventEmitter2,
+    private readonly uow: UnitOfWork,
+
+    @Inject(InventoryAdjustment.name)
+    private readonly inventoryAdjustmentModel: TenantModelProxy<
+      typeof InventoryAdjustment
+    >,
+
+    @Inject(InventoryAdjustmentEntry.name)
+    private readonly inventoryAdjustmentEntryModel: TenantModelProxy<
+      typeof InventoryAdjustmentEntry
+    >,
+  ) {}
+
+  /**
+   * Deletes the inventory adjustment transaction.
+   * @param {number} inventoryAdjustmentId - Inventory adjustment id.
+   */
+  public async deleteInventoryAdjustment(
+    inventoryAdjustmentId: number,
+  ): Promise<void> {
+    // Retrieve the inventory adjustment or throw not found service error.
+    const oldInventoryAdjustment = await this.inventoryAdjustmentModel()
+      .query()
+      .findById(inventoryAdjustmentId)
+      .throwIfNotFound();
+
+    // Deletes the inventory adjustment transaction and associated transactions
+    // under unit-of-work env.
+    return this.uow.withTransaction(async (trx: Knex.Transaction) => {
+      // Triggers `onInventoryAdjustmentDeleting` event.
+      await this.eventEmitter.emitAsync(events.inventoryAdjustment.onDeleting, {
+        oldInventoryAdjustment,
+        trx,
+      } as IInventoryAdjustmentDeletingPayload);
+
+      // Deletes the inventory adjustment entries.
+      await this.inventoryAdjustmentEntryModel()
+        .query(trx)
+        .where('adjustment_id', inventoryAdjustmentId)
+        .delete();
+
+      // Deletes the inventory adjustment transaction.
+      await this.inventoryAdjustmentModel()
+        .query(trx)
+        .findById(inventoryAdjustmentId)
+        .delete();
+
+      // Triggers `onInventoryAdjustmentDeleted` event.
+      await this.eventEmitter.emitAsync(events.inventoryAdjustment.onDeleted, {
+        inventoryAdjustmentId,
+        oldInventoryAdjustment,
+        trx,
+      } as IInventoryAdjustmentEventDeletedPayload);
+    });
+  }
+}