add server to monorepo.

packages/server/src/services/Items/DeleteItem.ts

@@ -0,0 +1,66 @@
+import { Service, Inject } from 'typedi';
+import {
+  IItemEventDeletedPayload,
+  IItemEventDeletingPayload,
+} from '@/interfaces';
+import { Knex } from 'knex';
+import { EventPublisher } from '@/lib/EventPublisher/EventPublisher';
+import HasTenancyService from '@/services/Tenancy/TenancyService';
+import UnitOfWork from '@/services/UnitOfWork';
+import events from '@/subscribers/events';
+import { ERRORS } from './constants';
+import { ItemsValidators } from './ItemValidators';
+
+@Service()
+export class DeleteItem {
+  @Inject()
+  private validators: ItemsValidators;
+
+  @Inject()
+  private tenancy: HasTenancyService;
+
+  @Inject()
+  private eventPublisher: EventPublisher;
+
+  @Inject()
+  private uow: UnitOfWork;
+
+  /**
+   * Delete the given item from the storage.
+   * @param {number} tenantId - Tenant id.
+   * @param {number} itemId - Item id.
+   * @return {Promise<void>}
+   */
+  public async deleteItem(tenantId: number, itemId: number) {
+    const { Item } = this.tenancy.models(tenantId);
+
+    // Retreive the given item or throw not found service error.
+    const oldItem = await Item.query()
+      .findById(itemId)
+      .throwIfNotFound()
+      .queryAndThrowIfHasRelations({
+        type: ERRORS.ITEM_HAS_ASSOCIATED_TRANSACTIONS,
+      });
+    // Delete item in unit of work.
+    return this.uow.withTransaction(tenantId, async (trx: Knex.Transaction) => {
+      // Triggers `onItemDeleting` event.
+      await this.eventPublisher.emitAsync(events.item.onDeleting, {
+        tenantId,
+        trx,
+        oldItem,
+      } as IItemEventDeletingPayload);
+
+      // Deletes the item.
+      await Item.query(trx).findById(itemId).delete();
+
+      const eventPayload: IItemEventDeletedPayload = {
+        tenantId,
+        oldItem,
+        itemId,
+        trx,
+      };
+      // Triggers `onItemDeleted` event.
+      await this.eventPublisher.emitAsync(events.item.onDeleted, eventPayload);
+    });
+  }
+}