add login flow for waiting list demo app

src/auth/services/auth.service.ts

@@ -18,8 +18,10 @@ import {
   ForgetPasswordRequestDto,
   LoginRequestDto,
   SendForgetPasswordOtpRequestDto,
+  SendLoginOtpRequestDto,
   SetEmailRequestDto,
   setJuniorPasswordRequestDto,
+  VerifyLoginOtpRequestDto,
   VerifyUserRequestDto,
 } from '../dtos/request';
 import { GrantType, Roles } from '../enums';
@@ -325,6 +327,39 @@ export class AuthService {
     }
   }
 
+  async sendLoginOtp({ email }: SendLoginOtpRequestDto) {
+    const user = await this.userService.findOrCreateByEmail(email);
+    this.logger.log(`Sending login OTP to ${email}`);
+    return this.otpService.generateAndSendOtp({
+      recipient: email,
+      scope: OtpScope.LOGIN,
+      otpType: OtpType.EMAIL,
+      userId: user.id,
+    });
+  }
+
+  async verifyLoginOtp({ email, otp }: VerifyLoginOtpRequestDto): Promise<[ILoginResponse, User]> {
+    const user = await this.userService.findUserOrThrow({ email });
+
+    this.logger.log(`Verifying login OTP for ${email}`);
+    const isOtpValid = await this.otpService.verifyOtp({
+      otpType: OtpType.EMAIL,
+      scope: OtpScope.LOGIN,
+      userId: user.id,
+      value: otp,
+    });
+
+    if (!isOtpValid) {
+      this.logger.error(`Invalid OTP for user with email ${email}`);
+      throw new BadRequestException('OTP.INVALID_OTP');
+    }
+
+    this.logger.log(`Login OTP verified successfully for ${email}`);
+
+    const token = await this.generateAuthToken(user);
+    return [token, user];
+  }
+
   logout(req: Request) {
     this.logger.log('Logging out');
     const accessToken = req.headers.authorization?.split(' ')[1] as string;