refactor: tax rates to nestjs

packages/server-nest/src/modules/TaxRates/commands/InactivateTaxRate.ts

@@ -0,0 +1,59 @@
+import { Inject, Injectable } from '@nestjs/common';
+import {
+  ITaxRateActivatedPayload,
+  ITaxRateActivatingPayload,
+} from '../TaxRates.types';
+import { Knex } from 'knex';
+import { CommandTaxRatesValidators } from './CommandTaxRatesValidator.service';
+import { UnitOfWork } from '@/modules/Tenancy/TenancyDB/UnitOfWork.service';
+import { TaxRateModel } from '../models/TaxRate.model';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { events } from '@/common/events/events';
+
+@Injectable()
+export class InactivateTaxRateService {
+  constructor(
+    private readonly eventEmitter: EventEmitter2,
+    private readonly uow: UnitOfWork,
+    private readonly validators: CommandTaxRatesValidators,
+
+    @Inject(TaxRateModel.name)
+    private readonly taxRateModel: typeof TaxRateModel,
+  ) {}
+
+  /**
+   * Edits the given tax rate.
+   * @param {number} taxRateId
+   * @returns {Promise<ITaxRate>}
+   */
+  public async inactivateTaxRate(taxRateId: number) {
+    const oldTaxRate = await this.taxRateModel.query().findById(taxRateId);
+
+    // Validates the tax rate existance.
+    this.validators.validateTaxRateExistance(oldTaxRate);
+
+    // Validates the tax rate active.
+    this.validators.validateTaxRateNotInactive(oldTaxRate);
+
+    return this.uow.withTransaction(async (trx: Knex.Transaction) => {
+      // Triggers `onTaxRateActivating` event.
+      await this.eventEmitter.emitAsync(events.taxRates.onInactivating, {
+        taxRateId,
+        trx,
+      } as ITaxRateActivatingPayload);
+
+      const taxRate = await this.taxRateModel
+        .query(trx)
+        .findById(taxRateId)
+        .patch({ active: false });
+
+      // Triggers `onTaxRateCreated` event.
+      await this.eventEmitter.emitAsync(events.taxRates.onInactivated, {
+        taxRateId,
+        trx,
+      } as ITaxRateActivatedPayload);
+
+      return taxRate;
+    });
+  }
+}