added connection to the dataBase

.example

@@ -0,0 +1,7 @@
+PORT=
+JWT_SECRET=
+DB_HOST=
+DB_PORT=
+DB_USER=
+DB_PASSWORD=
+DB_NAME=

package.json

@@ -22,9 +22,15 @@
   "dependencies": {
     "@nestjs/common": "^11.0.1",
     "@nestjs/core": "^11.0.1",
+    "@nestjs/mapped-types": "*",
     "@nestjs/platform-express": "^11.0.1",
+    "@nestjs/typeorm": "^11.0.0",
+    "class-transformer": "^0.5.1",
+    "class-validator": "^0.14.2",
+    "mysql2": "^3.14.4",
     "reflect-metadata": "^0.2.2",
-    "rxjs": "^7.8.1"
+    "rxjs": "^7.8.1",
+    "typeorm": "^0.3.26"
   },
   "devDependencies": {
     "@eslint/eslintrc": "^3.2.0",

src/app.module.ts

@@ -1,10 +1,24 @@
 import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
+import { UserModule } from './user/user.module';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { User } from './user/entities/user.entity';
 
 @Module({
-  imports: [],
+  imports: [
+    TypeOrmModule.forRoot({
+      type: 'mysql',
+      host: 'localhost',
+      port: 3306,
+      username: 'root',
+      password: 'root',
+      database: 'test',
+      entities: [User],
+      synchronize: false,
+    }),
+    UserModule],
   controllers: [AppController],
   providers: [AppService],
 })
-export class AppModule {}
+export class AppModule { }

src/main.ts

@@ -1,8 +1,11 @@
 import { NestFactory } from '@nestjs/core';
 import { AppModule } from './app.module';
+import { ValidationPipe } from '@nestjs/common';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
+  app.useGlobalPipes(new ValidationPipe());
+  app.enableCors();
   await app.listen(process.env.PORT ?? 3000);
 }
 bootstrap();

src/user/dto/create-user.dto.ts

@@ -0,0 +1 @@
+export class CreateUserDto {}

src/user/dto/update-user.dto.ts

@@ -0,0 +1,4 @@
+import { PartialType } from '@nestjs/mapped-types';
+import { CreateUserDto } from './create-user.dto';
+
+export class UpdateUserDto extends PartialType(CreateUserDto) {}

src/user/entities/user.entity.ts

@@ -0,0 +1,6 @@
+import { Entity } from "typeorm";
+
+@Entity()
+export class User {
+
+}

src/user/user.controller.spec.ts

@@ -0,0 +1,20 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { UserController } from './user.controller';
+import { UserService } from './user.service';
+
+describe('UserController', () => {
+  let controller: UserController;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [UserController],
+      providers: [UserService],
+    }).compile();
+
+    controller = module.get<UserController>(UserController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});

src/user/user.controller.ts

@@ -0,0 +1,34 @@
+import { Controller, Get, Post, Body, Patch, Param, Delete } from '@nestjs/common';
+import { UserService } from './user.service';
+import { CreateUserDto } from './dto/create-user.dto';
+import { UpdateUserDto } from './dto/update-user.dto';
+
+@Controller('user')
+export class UserController {
+  constructor(private readonly userService: UserService) {}
+
+  @Post()
+  create(@Body() createUserDto: CreateUserDto) {
+    return this.userService.create(createUserDto);
+  }
+
+  @Get()
+  findAll() {
+    return this.userService.findAll();
+  }
+
+  @Get(':id')
+  findOne(@Param('id') id: string) {
+    return this.userService.findOne(+id);
+  }
+
+  @Patch(':id')
+  update(@Param('id') id: string, @Body() updateUserDto: UpdateUserDto) {
+    return this.userService.update(+id, updateUserDto);
+  }
+
+  @Delete(':id')
+  remove(@Param('id') id: string) {
+    return this.userService.remove(+id);
+  }
+}

src/user/user.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { UserService } from './user.service';
+import { UserController } from './user.controller';
+
+@Module({
+  controllers: [UserController],
+  providers: [UserService],
+})
+export class UserModule {}

src/user/user.service.spec.ts

@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { UserService } from './user.service';
+
+describe('UserService', () => {
+  let service: UserService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [UserService],
+    }).compile();
+
+    service = module.get<UserService>(UserService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});

src/user/user.service.ts

@@ -0,0 +1,26 @@
+import { Injectable } from '@nestjs/common';
+import { CreateUserDto } from './dto/create-user.dto';
+import { UpdateUserDto } from './dto/update-user.dto';
+
+@Injectable()
+export class UserService {
+  create(createUserDto: CreateUserDto) {
+    return 'This action adds a new user';
+  }
+
+  findAll() {
+    return `This action returns all user`;
+  }
+
+  findOne(id: number) {
+    return `This action returns a #${id} user`;
+  }
+
+  update(id: number, updateUserDto: UpdateUserDto) {
+    return `This action updates a #${id} user`;
+  }
+
+  remove(id: number) {
+    return `This action removes a #${id} user`;
+  }
+}