feat(nestjs): migrate to NestJS

packages/server/src/modules/Bills/queries/GetBills.service.ts

@@ -0,0 +1,68 @@
+import { Inject, Injectable } from '@nestjs/common';
+import * as R from 'ramda';
+import { TransformerInjectable } from '@/modules/Transformer/TransformerInjectable.service';
+import { DynamicListService } from '@/modules/DynamicListing/DynamicList.service';
+import { Bill } from '../models/Bill';
+import { IFilterMeta, IPaginationMeta } from '@/interfaces/Model';
+import { BillTransformer } from './Bill.transformer';
+import { IBillsFilter } from '../Bills.types';
+import { TenantModelProxy } from '@/modules/System/models/TenantBaseModel';
+
+@Injectable()
+export class GetBillsService {
+  constructor(
+    private transformer: TransformerInjectable,
+    private dynamicListService: DynamicListService,
+
+    @Inject(Bill.name) private billModel: TenantModelProxy<typeof Bill>,
+  ) {}
+
+  /**
+   * Retrieve bills data table list.
+   * @param {IBillsFilter} billsFilter -
+   */
+  public async getBills(filterDTO: IBillsFilter): Promise<{
+    bills: Bill;
+    pagination: IPaginationMeta;
+    filterMeta: IFilterMeta;
+  }> {
+    // Parses bills list filter DTO.
+    const filter = this.parseListFilterDTO(filterDTO);
+
+    // Dynamic list service.
+    const dynamicFilter = await this.dynamicListService.dynamicList(
+      this.billModel(),
+      filter,
+    );
+    const { results, pagination } = await this.billModel()
+      .query()
+      .onBuild((builder) => {
+        builder.withGraphFetched('vendor');
+        builder.withGraphFetched('entries.item');
+        dynamicFilter.buildQuery()(builder);
+
+        // Filter query.
+        filterDTO?.filterQuery && filterDTO?.filterQuery(builder);
+      })
+      .pagination(filter.page - 1, filter.pageSize);
+
+    // Tranform the bills to POJO.
+    const bills = await this.transformer.transform(
+      results,
+      new BillTransformer(),
+    );
+    return {
+      bills,
+      pagination,
+      filterMeta: dynamicFilter.getResponseMeta(),
+    };
+  }
+
+  /**
+   * Parses bills list filter DTO.
+   * @param filterDTO -
+   */
+  private parseListFilterDTO(filterDTO) {
+    return R.compose(this.dynamicListService.parseStringifiedFilter)(filterDTO);
+  }
+}