Nestjs sending data before complete execution from service to Controller - nestjs

Question

I have a controller and service. From service, I am sending login success data to the controller. but its sending data before complete execution in service. but i am trying to send data after complete execution in loginservice.
I need to return user data after complete Login function..
userService
import { Injectable, NotFoundException, UnauthorizedException } from '#nestjs/common';
import { InjectModel } from '#nestjs/mongoose';
import * as jwt from 'jsonwebtoken';
import { Model } from 'mongoose';
import { User } from './user.model';
import * as bcrypt from 'bcrypt'
#Injectable()
export class UserService {
constructor(
#InjectModel('User') private readonly userModel: Model<User>,
) { }
async Login(email: string, password: string) {
const user = await this.userModel.findOne({ email });
if (!user) {
console.log("User does exist on the database.");
throw new UnauthorizedException();
}
await bcrypt.compare(password, user.password, function (err, result) {
if (!result) {
throw new UnauthorizedException();
}
const authJwtToken = jwt.sign({ name: user.name, email: user.email, role: user.role }, "testSecreate");
const response = { name: user.name, email: user.email, role: user.role, token: authJwtToken }
console.log(response)
return response;
});
}
}
userController
import {
Controller,
Post,
Body,
Get,
Param,
Patch,
Delete,
} from '#nestjs/common';
import { UserService } from './user.service';
#Controller('users')
export class UserController {
constructor(private readonly userService: UserService) {}
#Post('/login')
async login(
#Body('email') userEmail,
#Body('password') userPassword
) {
const token = await this.userService.Login(userEmail, userPassword)
console.log(token, 'token')
return token;
}
}

Answer 1

since you're providing the callback func (last arg) to bcrypt.compare it will not return a promise. Please read the docs: https://www.npmjs.com/package/bcrypt#with-promises