feat(nestjs): migrate to NestJS

packages/server/src/modules/ManualJournals/commands/DeleteManualJournal.service.ts

@@ -0,0 +1,75 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Knex } from 'knex';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import {
+  IManualJournalEventDeletedPayload,
+  IManualJournalDeletingPayload,
+} from '../types/ManualJournals.types';
+import { UnitOfWork } from '@/modules/Tenancy/TenancyDB/UnitOfWork.service';
+import { ManualJournal } from '../models/ManualJournal';
+import { ManualJournalEntry } from '../models/ManualJournalEntry';
+import { events } from '@/common/events/events';
+import { TenantModelProxy } from '@/modules/System/models/TenantBaseModel';
+
+@Injectable()
+export class DeleteManualJournalService {
+  constructor(
+    private readonly eventPublisher: EventEmitter2,
+    private readonly uow: UnitOfWork,
+
+    @Inject(ManualJournal.name)
+    private readonly manualJournalModel: TenantModelProxy<typeof ManualJournal>,
+
+    @Inject(ManualJournalEntry.name)
+    private readonly manualJournalEntryModel: TenantModelProxy<
+      typeof ManualJournalEntry
+    >,
+  ) {}
+
+  /**
+   * Deletes the given manual journal
+   * @param {number} manualJournalId
+   * @return {Promise<void>}
+   */
+  public deleteManualJournal = async (
+    manualJournalId: number,
+  ): Promise<{
+    oldManualJournal: ManualJournal;
+  }> => {
+    // Validate the manual journal exists on the storage.
+    const oldManualJournal = await this.manualJournalModel()
+      .query()
+      .findById(manualJournalId)
+      .throwIfNotFound();
+
+    // Deletes the manual journal with associated transactions under unit-of-work envirement.
+    return this.uow.withTransaction(async (trx: Knex.Transaction) => {
+      // Triggers `onManualJournalDeleting` event.
+      await this.eventPublisher.emitAsync(events.manualJournals.onDeleting, {
+        oldManualJournal,
+        trx,
+      } as IManualJournalDeletingPayload);
+
+      // Deletes the manual journal entries.
+      await this.manualJournalEntryModel()
+        .query(trx)
+        .where('manualJournalId', manualJournalId)
+        .delete();
+
+      // Deletes the manual journal transaction.
+      await this.manualJournalModel()
+        .query(trx)
+        .findById(manualJournalId)
+        .delete();
+
+      // Triggers `onManualJournalDeleted` event.
+      await this.eventPublisher.emitAsync(events.manualJournals.onDeleted, {
+        manualJournalId,
+        oldManualJournal,
+        trx,
+      } as IManualJournalEventDeletedPayload);
+
+      return { oldManualJournal };
+    });
+  };
+}