feat: [#7] - Add. static authentication for SignIn api

.talismanrc

@@ -1,6 +1,8 @@
 fileignoreconfig:
-- filename: frontend/src/app/auth/auth.tsx
-  checksum: 4ffb9648d31740f2a6fff7fa3368d13d2bfaea047f2eb0f2bc342984ca1d633f
-- filename: frontend/src/app/signup/page.tsx
-  checksum: 98adba90b3c2e6e6b2c9d43996a844467b8afb4881e606f9b22dbd5f239d69ea
-version: ""
+- filename: apis.rest
+  checksum: 2e52807fb85686dd07d53d8af0296040d2c4b0cd0e3389fee66bd9c86ad501c0
+- filename: backend/src/auth/auth.service.ts
+  checksum: b1e774f02679869d2647ea66be0b6f56163b3dff854af6f66b9512db235a2529
+- filename: backend/src/users/users.service.ts
+  checksum: d6456d97232e89cec4e3960ebb6d1b29d9d9cf571a23ec72035ea7de8e63c60f
+version: ""

apis.rest

@@ -0,0 +1,9 @@
+POST http://localhost:3001/login
+Content-Type: application/json
+
+{
+    "userId": 2,
+    "username": "maria",
+    "password": "guess"
+}
+

backend/src/app.controller.ts

@@ -2,23 +2,15 @@ import { Controller, Get } from '@nestjs/common';
 import { AppService } from './app.service';
 import { ApiTags, ApiOperation, ApiResponse } from '@nestjs/swagger';
 
-@ApiTags('App') 
+@ApiTags('App')
 @Controller()
 export class AppController {
   constructor(private readonly appService: AppService) {}
 
   @Get()
-  @ApiOperation({ summary: 'Get a welcome message' }) 
-  @ApiResponse({ status: 200, description: 'Return Hello World message' }) 
+  @ApiOperation({ summary: 'Get a welcome message' })
+  @ApiResponse({ status: 200, description: 'Return Hello World message' })
   getHello(): string {
     return this.appService.getHello();
   }
-
-  // Dummy API
-  @Get('dummy')
-  @ApiOperation({ summary: 'Get dummy data' })
-  @ApiResponse({ status: 200, description: 'Dummy data returned successfully' })
-  getDummy(): string {
-    return 'This is dummy data';
-  }
 }

backend/src/app.module.ts

@@ -1,9 +1,11 @@
 import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
+import { AuthModule } from './auth/auth.module';
+import { UsersModule } from './users/users.module';
 
 @Module({
-  imports: [],
+  imports: [AuthModule, UsersModule],
   controllers: [AppController],
   providers: [AppService],
 })

backend/src/auth/auth.controller.ts

@@ -0,0 +1,24 @@
+import { Body, Controller, HttpCode, HttpStatus, Post } from '@nestjs/common';
+import { ApiTags, ApiOperation, ApiResponse } from '@nestjs/swagger';
+import { AuthService } from './auth.service';
+import { UserDto } from 'src/users/users.dto';
+
+@ApiTags('Authentication')
+@Controller()
+export class AuthController {
+  constructor(private readonly authService: AuthService) {}
+
+  @Post('signup')
+  @ApiOperation({ summary: 'Register new user' })
+  @ApiResponse({ status: 201, description: 'API for registering new user' })
+  async signupUser(): Promise<string> {
+    return this.authService.signupUser();
+  }
+
+  @HttpCode(HttpStatus.OK)
+  @ApiOperation({ summary: 'Login user' })
+  @Post('login')
+  signIn(@Body() signInDto: UserDto) {
+    return this.authService.signIn(signInDto.username, signInDto.password);
+  }
+}

backend/src/auth/auth.module.ts

@@ -0,0 +1,11 @@
+import { Module } from '@nestjs/common';
+import { AuthController } from './auth.controller';
+import { AuthService } from './auth.service';
+import { UsersModule } from 'src/users/users.module';
+
+@Module({
+  imports: [UsersModule],
+  controllers: [AuthController],
+  providers: [AuthService],
+})
+export class AuthModule {}

backend/src/auth/auth.service.ts

@@ -0,0 +1,21 @@
+import { Injectable, UnauthorizedException } from '@nestjs/common';
+import { UsersService } from 'src/users/users.service';
+
+@Injectable()
+export class AuthService {
+  constructor(private readonly usersService: UsersService) {}
+  async signupUser() {
+    return 'hello';
+  }
+
+  async signIn(username: string, pass: string): Promise<any> {
+    const user = await this.usersService.findOne(username);
+    if (user?.password !== pass) {
+      throw new UnauthorizedException();
+    }
+    const { password, ...result } = user;
+    // TODO: Generate a JWT and return it here
+    // instead of the user object
+    return { success: true, result };
+  }
+}

backend/src/main.ts

@@ -6,8 +6,8 @@ async function bootstrap() {
   const app = await NestFactory.create(AppModule);
 
   const config = new DocumentBuilder()
-    .setTitle('NestJS API')
-    .setDescription('NestJS API documentation')
+    .setTitle('NetVibe')
+    .setDescription('Emphasizing networking with an energetic twist')
     .setVersion('1.0')
     .build();
   const document = SwaggerModule.createDocument(app, config);

backend/src/users/users.dto.ts

@@ -0,0 +1,10 @@
+import { ApiProperty } from '@nestjs/swagger';
+
+export class UserDto {
+  @ApiProperty()
+  userId: string;
+  @ApiProperty()
+  username: string;
+  @ApiProperty()
+  password: string;
+}

backend/src/users/users.module.ts

@@ -0,0 +1,10 @@
+import { Module } from '@nestjs/common';
+import { UsersService } from './users.service';
+
+@Module({
+  imports: [],
+  controllers: [],
+  providers: [UsersService],
+  exports: [UsersService],
+})
+export class UsersModule {}

backend/src/users/users.service.ts

@@ -0,0 +1,23 @@
+import { Injectable } from '@nestjs/common';
+
+export type User = { userId: number; username: string; password: string };
+
+@Injectable()
+export class UsersService {
+  private readonly users = [
+    {
+      userId: 1,
+      username: 'john',
+      password: 'changeme',
+    },
+    {
+      userId: 2,
+      username: 'maria',
+      password: 'guess',
+    },
+  ];
+
+  async findOne(username: string): Promise<User | undefined> {
+    return this.users.find((user) => user.username === username);
+  }
+}