feat: add admin module

src/modules/tests/providers/tests.service.ts

@@ -0,0 +1,57 @@
+import {
+  HttpStatus,
+  Injectable,
+  RequestTimeoutException,
+} from '@nestjs/common';
+import { Repository } from 'typeorm';
+import { Test } from '../entities/test.entity';
+import { InjectRepository } from '@nestjs/typeorm';
+import { CreateTestDTO } from '../dtos/create-test.dto';
+import { AppException } from '@/common/exceptions/app.exception';
+import { AppResponse } from '@/common/responses';
+import { I18nService } from 'nestjs-i18n';
+
+@Injectable()
+export class TestsService {
+  constructor(
+    /**
+     * Inject Tests Repository
+     */
+    @InjectRepository(Test)
+    private readonly testRepository: Repository<Test>,
+
+    /**
+     * Inject I18n Service
+     */
+    private readonly i18nService: I18nService,
+  ) {}
+
+  public async createOne(createTestDto: CreateTestDTO) {
+    const titleExists = await this.testRepository.findOne({
+      where: {
+        title: createTestDto.title,
+      },
+    });
+
+    if (titleExists) {
+      throw new AppException('validation.duplicateField', HttpStatus.CONFLICT, {
+        field: '$t(tests.fields.title)',
+      });
+    }
+
+    const newTest = this.testRepository.create(createTestDto);
+
+    try {
+      await this.testRepository.save(newTest);
+      return new AppResponse(
+        newTest,
+        this.i18nService.translate('tests.messages.createSuccess'),
+      );
+    } catch (err) {
+      throw new RequestTimeoutException('common.errors.requestTimeout', {
+        cause: err,
+        description: 'Error connecting to the database',
+      });
+    }
+  }
+}