Package me.josephsf.jobportaljosephsfeir.service

Class AuthService

java.lang.Object

me.josephsf.jobportaljosephsfeir.service.AuthService

@Service
public class AuthService
extends Object

Service class for authentication and user registration in the Job Portal system.

This service provides methods for user registration, password management, and basic authentication-related functionality. It interacts with the MongoDB database through the UserRepository and handles secure password storage using Spring Security's PasswordEncoder.

Since:

2025-05-15

Constructor Summary

Constructors

Constructor	Description
AuthService(UserRepository userRepository, org.springframework.security.crypto.password.PasswordEncoder passwordEncoder)	Constructs a new AuthService with required dependencies.

Method Summary

Modifier and Type	Method	Description
User	changePassword(String userId, String oldPassword, String newPassword)	Changes a user's password.
void	deleteUser(String userId)	Deletes a user account.
boolean	isEmailAvailable(String email)	Checks if an email is available for registration.
boolean	isUsernameAvailable(String username)	Checks if a username is available for registration.
User	registerUser(RegisterDto registrationRequest)	Registers a new user in the system.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

AuthService

public AuthService(UserRepository userRepository,
 org.springframework.security.crypto.password.PasswordEncoder passwordEncoder)

Constructs a new AuthService with required dependencies.

Parameters:

userRepository - Repository for user data operations

passwordEncoder - Encoder for securely hashing passwords

Method Details

isUsernameAvailable

public boolean isUsernameAvailable(String username)

Checks if a username is available for registration.

Parameters:

username - The username to check

Returns:

true if the username is available, false if it already exists

isEmailAvailable

public boolean isEmailAvailable(String email)

Checks if an email is available for registration.

Parameters:

email - The email to check

Returns:

true if the email is available, false if it already exists

registerUser

public User registerUser(RegisterDto registrationRequest)

Registers a new user in the system. Validates that the username and email are available before registration. Securely hashes the password and assigns appropriate roles.

Parameters:

registrationRequest - The data transfer object containing registration information

Returns:

The newly created user account

Throws:

RuntimeException - if the username or email is already taken

changePassword

public User changePassword(String userId,
 String oldPassword,
 String newPassword)

Changes a user's password. Verifies the old password before allowing the change.

Parameters:

userId - The ID of the user whose password is being changed

oldPassword - The current password for verification

newPassword - The new password to set

Returns:

The updated user account or null if the user is not found

Throws:

RuntimeException - if the old password is invalid

deleteUser

public void deleteUser(String userId)

Deletes a user account.

Parameters:

userId - The ID of the user to delete