add server to monorepo.

packages/server/src/services/Branches/DeleteBranch.ts

@@ -0,0 +1,76 @@
+import { Service, Inject } from 'typedi';
+import { EventPublisher } from '@/lib/EventPublisher/EventPublisher';
+import HasTenancyService from '@/services/Tenancy/TenancyService';
+import UnitOfWork from '@/services/UnitOfWork';
+import { Knex } from 'knex';
+import events from '@/subscribers/events';
+import { IBranchDeletedPayload, IBranchDeletePayload } from '@/interfaces';
+import { CURDBranch } from './CRUDBranch';
+import { BranchValidator } from './BranchValidate';
+import { ERRORS } from './constants';
+@Service()
+export class DeleteBranch extends CURDBranch {
+  @Inject()
+  private tenancy: HasTenancyService;
+
+  @Inject()
+  private uow: UnitOfWork;
+
+  @Inject()
+  private eventPublisher: EventPublisher;
+
+  @Inject()
+  private validator: BranchValidator;
+
+  /**
+   * Validates the branch deleteing.
+   * @param   {number} tenantId
+   * @param   {number} branchId
+   * @returns {Promise<void>}
+   */
+  private authorize = async (tenantId: number, branchId: number) => {
+    await this.validator.validateBranchNotOnlyWarehouse(tenantId, branchId);
+  };
+
+  /**
+   * Deletes branch.
+   * @param   {number} tenantId
+   * @param   {number} branchId
+   * @returns {Promise<void>}
+   */
+  public deleteBranch = async (
+    tenantId: number,
+    branchId: number
+  ): Promise<void> => {
+    const { Branch } = this.tenancy.models(tenantId);
+
+    // Retrieves the old branch or throw not found service error.
+    const oldBranch = await Branch.query()
+      .findById(branchId)
+      .throwIfNotFound()
+      .queryAndThrowIfHasRelations({
+        type: ERRORS.BRANCH_HAS_ASSOCIATED_TRANSACTIONS,
+      });
+    // Authorize the branch before deleting.
+    await this.authorize(tenantId, branchId);
+
+    // Deletes branch under unit-of-work.
+    return this.uow.withTransaction(tenantId, async (trx: Knex.Transaction) => {
+      // Triggers `onBranchCreate` event.
+      await this.eventPublisher.emitAsync(events.warehouse.onEdit, {
+        tenantId,
+        oldBranch,
+        trx,
+      } as IBranchDeletePayload);
+
+      await Branch.query().findById(branchId).delete();
+
+      // Triggers `onBranchCreate` event.
+      await this.eventPublisher.emitAsync(events.warehouse.onEdited, {
+        tenantId,
+        oldBranch,
+        trx,
+      } as IBranchDeletedPayload);
+    });
+  };
+}