All files / src/services jwt-service.ts

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import {UserRepository} from '@loopback/authentication-jwt';
import {inject} from '@loopback/core';
import {repository} from '@loopback/repository';
import {UserProfile} from '@loopback/security';
import {promisify} from 'util';
import {TokenServiceBindings} from '../keys';
import errorMessages from '../utils/errorMessages';
const jwt = require('jsonwebtoken');
const signAsync = promisify(jwt.sign);
const verifyAsync = promisify(jwt.verify);
 
export class JWTService {
  // @inject('authentication.jwt.secret')
  @inject(TokenServiceBindings.TOKEN_SECRET)
  public readonly jwtSecret: string;
 
  @inject(TokenServiceBindings.TOKEN_EXPIRES_IN)
  public readonly expiresSecret: string;
  @repository(UserRepository)
  public userRepository: UserRepository;
  
  async generateToken(userProfile: UserProfile): Promise<string> {
    let methodName = "generateToken"
 
    Iif (!userProfile) {
      throw {code: 401, message: errorMessages.userProfileMissingInJWT, methodName,className:JWTService.name}
    }
 
    try {
      return await signAsync(userProfile, this.jwtSecret, {
        expiresIn: this.expiresSecret
      });
    } catch (err) {
      throw {code: 401, message: errorMessages.generatingToken + " " + err, methodName,className:JWTService.name}
    }
  }
 
  async verifyToken(token: string): Promise<UserProfile> {
    let methodName = "verifyToken"
    Iif (!token) {
      throw {code: 401, message: errorMessages.errorVerifyingToken + ": token is null", methodName,className:JWTService.name}
    };
 
    let userProfile: UserProfile;
 
    try {
      const decryptedToken = await verifyAsync(token, this.jwtSecret);
      const foundUser = await this.userRepository.findOne({where: {UID: decryptedToken.UID}, include: ['role']});
      Iif (!foundUser) {
        throw {code: 401, message: errorMessages.tokenNotValid, methodName,className:JWTService.name}
      }
      userProfile = Object.assign(foundUser);
    }
    catch (err: any) {
      throw {code: 401, message: errorMessages.errorVerifyingToken + " " + err.message, methodName,className:JWTService.name}
    }
    return userProfile;
  }
}