refactor: dynamic list to nestjs

packages/server-nest/src/modules/Vendors/queries/GetVendors.service.ts

@@ -0,0 +1,66 @@
+import * as R from 'ramda';
+import { Vendor } from '../models/Vendor';
+import { DynamicListService } from '@/modules/DynamicListing/DynamicList.service';
+import { TransformerInjectable } from '@/modules/Transformer/TransformerInjectable.service';
+import { Inject, Injectable } from '@nestjs/common';
+import { IFilterMeta, IPaginationMeta } from '@/interfaces/Model';
+import { VendorTransfromer } from './VendorTransformer';
+
+@Injectable()
+export class GetVendorsService {
+  constructor(
+    private dynamicListService: DynamicListService,
+    private transformer: TransformerInjectable,
+
+    @Inject(Vendor.name) private vendorModel: typeof Vendor,
+  ) {}
+
+  /**
+   * Retrieve vendors datatable list.
+   * @param {IVendorsFilter} vendorsFilter - Vendors filter.
+   */
+  public async getVendorsList(filterDTO: IVendorsFilter): Promise<{
+    vendors: Vendor[];
+    pagination: IPaginationMeta;
+    filterMeta: IFilterMeta;
+  }> {
+    // Parses vendors list filter DTO.
+    const filter = this.parseVendorsListFilterDTO(filterDTO);
+
+    // Dynamic list service.
+    const dynamicList = await this.dynamicListService.dynamicList(
+      this.vendorModel,
+      filter,
+    );
+    // Vendors list.
+    const { results, pagination } = await this.vendorModel
+      .query()
+      .onBuild((builder) => {
+        dynamicList.buildQuery()(builder);
+
+        // Switches between active/inactive modes.
+        builder.modify('inactiveMode', filter.inactiveMode);
+      })
+      .pagination(filter.page - 1, filter.pageSize);
+
+    // Transform the vendors.
+    const transformedVendors = await this.transformer.transform(
+      results,
+      new VendorTransfromer(),
+    );
+    return {
+      vendors: transformedVendors,
+      pagination,
+      filterMeta: dynamicList.getResponseMeta(),
+    };
+  }
+
+  /**
+   *
+   * @param filterDTO
+   * @returns
+   */
+  private parseVendorsListFilterDTO(filterDTO) {
+    return R.compose(this.dynamicListService.parseStringifiedFilter)(filterDTO);
+  }
+}