feat(nestjs): migrate to NestJS

packages/server/src/modules/Items/GetItems.service.ts

@@ -0,0 +1,67 @@
+import * as R from 'ramda';
+import { Inject, Injectable } from '@nestjs/common';
+import { TransformerInjectable } from '../Transformer/TransformerInjectable.service';
+import { DynamicListService } from '../DynamicListing/DynamicList.service';
+import { Item } from './models/Item';
+import { IItemsFilter } from './types/Items.types';
+import { ItemTransformer } from './Item.transformer';
+import { TenantModelProxy } from '../System/models/TenantBaseModel';
+
+@Injectable()
+export class GetItemsService {
+  constructor(
+    private readonly dynamicListService: DynamicListService,
+    private readonly transformer: TransformerInjectable,
+    @Inject(Item.name)
+    private readonly itemModel: TenantModelProxy<typeof Item>,
+  ) {}
+
+  /**
+   * Parses items list filter DTO.
+   * @param {} filterDTO - Filter DTO.
+   */
+  private parseItemsListFilterDTO(filterDTO: IItemsFilter) {
+    return R.compose(
+      this.dynamicListService.parseStringifiedFilter<IItemsFilter>,
+    )(filterDTO);
+  }
+
+  /**
+   * Retrieves items datatable list.
+   * @param {IItemsFilter} itemsFilter - Items filter.
+   */
+  public async getItems(filterDTO: IItemsFilter) {
+    // Parses items list filter DTO.
+    const filter = this.parseItemsListFilterDTO(filterDTO);
+
+    // Dynamic list service.
+    const dynamicFilter = await this.dynamicListService.dynamicList(
+      Item,
+      filter,
+    );
+    const { results: items, pagination } = await this.itemModel()
+      .query()
+      .onBuild((builder) => {
+        builder.modify('inactiveMode', filter.inactiveMode);
+
+        builder.withGraphFetched('inventoryAccount');
+        builder.withGraphFetched('sellAccount');
+        builder.withGraphFetched('costAccount');
+        builder.withGraphFetched('category');
+
+        dynamicFilter.buildQuery()(builder);
+      })
+      .pagination(filter.page - 1, filter.pageSize);
+
+    // Retrieves the transformed items.
+    const transformedItems = await this.transformer.transform(
+      items,
+      new ItemTransformer(),
+    );
+    return {
+      items: transformedItems,
+      pagination,
+      filterMeta: dynamicFilter.getResponseMeta(),
+    };
+  }
+}