feat: implement Google SSO and Password Reset flows

backend/.env.example

@@ -2,6 +2,11 @@ NODE_ENV=development
 PORT=6003
 FRONTEND_URL=http://localhost:3000
 
+# Google OAuth
+GOOGLE_CLIENT_ID=your_google_client_id
+GOOGLE_CLIENT_SECRET=your_google_client_secret
+GOOGLE_CALLBACK_URL=http://localhost:3000/api/auth/google/callback
+
 DB_HOST=localhost
 DB_PORT=5432
 DB_USERNAME=postgres

backend/package.json

@@ -66,6 +66,7 @@
     "otplib": "^13.1.1",
     "papaparse": "^5.5.3",
     "passport": "^0.7.0",
+    "passport-google-oauth20": "^2.0.0",
     "passport-jwt": "^4.0.1",
     "passport-local": "^1.0.0",
     "pdfkit": "^0.17.2",
@@ -96,6 +97,7 @@
     "@types/nodemailer": "^7.0.9",
     "@types/otplib": "^7.0.0",
     "@types/papaparse": "^5.3.16",
+    "@types/passport-google-oauth20": "^2.0.17",
     "@types/passport-jwt": "^4.0.1",
     "@types/passport-local": "^1.0.38",
     "@types/pdfkit": "^0.17.3",

backend/src/app.module.ts

@@ -4,6 +4,8 @@ import { ConfigModule, ConfigService } from '@nestjs/config';
 import { TypeOrmModule } from '@nestjs/typeorm';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
+import { UsersModule } from './users/users.module';
+import { AuthModule } from './auth/auth.module';
 
 @Module({
   imports: [
@@ -22,6 +24,8 @@ import { AppService } from './app.service';
       }),
       inject: [ConfigService],
     }),
+    UsersModule,
+    AuthModule,
   ],
   controllers: [AppController],
   providers: [AppService],

backend/src/auth/auth.controller.spec.ts

@@ -0,0 +1,31 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { AuthController } from './auth.controller';
+import { AuthService } from './auth.service';
+
+describe('AuthController', () => {
+  let controller: AuthController;
+
+  const mockAuthService = {
+    forgotPassword: jest.fn(),
+    resetPassword: jest.fn(),
+    validateOAuthLogin: jest.fn(),
+  };
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [AuthController],
+      providers: [
+        {
+          provide: AuthService,
+          useValue: mockAuthService,
+        },
+      ],
+    }).compile();
+
+    controller = module.get<AuthController>(AuthController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});

backend/src/auth/auth.controller.ts

@@ -0,0 +1,44 @@
+import {
+  Controller,
+  Post,
+  Body,
+  Get,
+  UseGuards,
+  Req,
+  HttpCode,
+  HttpStatus,
+} from '@nestjs/common';
+import { AuthGuard } from '@nestjs/passport';
+import { AuthService } from './auth.service';
+
+@Controller('auth')
+export class AuthController {
+  constructor(private readonly authService: AuthService) {}
+
+  @Post('forgot-password')
+  @HttpCode(HttpStatus.OK)
+  async forgotPassword(@Body('email') email: string) {
+    await this.authService.forgotPassword(email);
+    return { message: 'If the email exists, a reset link has been sent.' };
+  }
+
+  @Post('reset-password')
+  @HttpCode(HttpStatus.OK)
+  async resetPassword(@Body() body: any) {
+    await this.authService.resetPassword(body.token, body.newPassword);
+    return { message: 'Password has been reset successfully.' };
+  }
+
+  @Get('google')
+  @UseGuards(AuthGuard('google'))
+  async googleAuth() {
+    // Initiates the Google OAuth flow
+  }
+
+  @Get('google/callback')
+  @UseGuards(AuthGuard('google'))
+  async googleAuthRedirect(@Req() req: any) {
+    // user is attached to req by the strategy
+    return req.user;
+  }
+}

backend/src/auth/auth.module.ts

@@ -0,0 +1,22 @@
+import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { PassportModule } from '@nestjs/passport';
+import { AuthController } from './auth.controller';
+import { AuthService } from './auth.service';
+import { GoogleStrategy } from './strategies/google.strategy';
+import { PasswordResetToken } from './entities/password-reset-token.entity';
+import { UsersModule } from '../users/users.module';
+import { MailModule } from '../mail/mail.module';
+
+@Module({
+  imports: [
+    TypeOrmModule.forFeature([PasswordResetToken]),
+    PassportModule,
+    UsersModule,
+    MailModule,
+  ],
+  controllers: [AuthController],
+  providers: [AuthService, GoogleStrategy],
+  exports: [AuthService],
+})
+export class AuthModule {}