feat(nestjs): migrate to NestJS

packages/server/src/modules/CreditNoteRefunds/commands/DeleteRefundCreditNote.service.ts

@@ -0,0 +1,74 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { Knex } from 'knex';
+import {
+  IRefundCreditNoteDeletedPayload,
+  IRefundCreditNoteDeletingPayload,
+} from '../types/CreditNoteRefunds.types';
+import { RefundCreditNote } from '../models/RefundCreditNote';
+import { UnitOfWork } from '@/modules/Tenancy/TenancyDB/UnitOfWork.service';
+import { events } from '@/common/events/events';
+import { TenantModelProxy } from '@/modules/System/models/TenantBaseModel';
+
+@Injectable()
+export class DeleteRefundCreditNoteService {
+  /**
+   * @param {UnitOfWork} uow - Unit of work.
+   * @param {EventEmitter2} eventPublisher - Event emitter.
+   * @param {typeof RefundCreditNote} refundCreditNoteModel - Refund credit note model.
+   */
+  constructor(
+    private readonly uow: UnitOfWork,
+    private readonly eventPublisher: EventEmitter2,
+
+    @Inject(RefundCreditNote.name)
+    private readonly refundCreditNoteModel: TenantModelProxy<
+      typeof RefundCreditNote
+    >,
+  ) {}
+
+  /**
+   * Retrieve the credit note graph.
+   * @param {number} refundCreditId - Refund credit note ID.
+   * @returns {Promise<void>}
+   */
+  public deleteCreditNoteRefund = async (refundCreditId: number) => {
+    // Retrieve the old credit note or throw not found service error.
+    const oldRefundCredit = await this.refundCreditNoteModel()
+      .query()
+      .findById(refundCreditId)
+      .throwIfNotFound();
+
+    // Triggers `onCreditNoteRefundDeleted` event.
+    await this.eventPublisher.emitAsync(events.creditNote.onRefundDelete, {
+      refundCreditId,
+      oldRefundCredit,
+    } as IRefundCreditNoteDeletedPayload);
+
+    // Deletes refund credit note transactions with associated entries.
+    return this.uow.withTransaction(async (trx: Knex.Transaction) => {
+      const eventPayload = {
+        trx,
+        refundCreditId,
+        oldRefundCredit,
+      } as IRefundCreditNoteDeletedPayload | IRefundCreditNoteDeletingPayload;
+
+      // Triggers `onCreditNoteRefundDeleting` event.
+      await this.eventPublisher.emitAsync(
+        events.creditNote.onRefundDeleting,
+        eventPayload,
+      );
+      // Deletes the refund credit note graph from the storage.
+      await this.refundCreditNoteModel()
+        .query(trx)
+        .findById(refundCreditId)
+        .delete();
+
+      // Triggers `onCreditNoteRefundDeleted` event.
+      await this.eventPublisher.emitAsync(
+        events.creditNote.onRefundDeleted,
+        eventPayload as IRefundCreditNoteDeletedPayload,
+      );
+    });
+  };
+}