feat(nestjs): migrate to NestJS

packages/server/src/modules/Roles/queries/GetRoles.service.ts

@@ -0,0 +1,27 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Role } from '../models/Role.model';
+import { TenantModelProxy } from '@/modules/System/models/TenantBaseModel';
+import { TransformerInjectable } from '@/modules/Transformer/TransformerInjectable.service';
+import { RoleTransformer } from './RoleTransformer';
+
+@Injectable()
+export class GetRolesService {
+  constructor(
+    private readonly transformer: TransformerInjectable,
+
+    @Inject(Role.name)
+    private readonly roleModel: TenantModelProxy<typeof Role>,
+  ) {}
+
+  /**
+   * Retrieve the roles list.
+   * @param {Promise<Role[]>}
+   */
+  public getRoles = async (): Promise<Role[]> => {
+    const roles = await this.roleModel()
+      .query()
+      .withGraphFetched('permissions');
+
+    return this.transformer.transform(roles, new RoleTransformer());
+  };
+}