made a user service

Author: IgorGunder

src/main/java/mate/academy/Main.java

@@ -2,17 +2,29 @@
 
 import java.time.LocalDate;
 import java.time.LocalDateTime;
+import mate.academy.lib.Injector;
 import mate.academy.model.CinemaHall;
 import mate.academy.model.Movie;
 import mate.academy.model.MovieSession;
+import mate.academy.model.User;
 import mate.academy.service.CinemaHallService;
 import mate.academy.service.MovieService;
 import mate.academy.service.MovieSessionService;
+import mate.academy.service.UserService;
 
 public class Main {
+    private static final Injector injector
+            = Injector.getInstance("mate.academy");
+
     public static void main(String[] args) {
-        MovieService movieService = null;
+        UserService userService = (UserService) injector.getInstance(UserService.class);
+        User user = new User();
+        user.setEmail("username@.com");
+        user.setPassword("password1111");
+        userService.add(user);
 
+        MovieService movieService
+                = (MovieService) injector.getInstance(MovieService.class);
         Movie fastAndFurious = new Movie("Fast and Furious");
         fastAndFurious.setDescription("An action film about street racing, heists, and spies.");
         movieService.add(fastAndFurious);
@@ -27,7 +39,8 @@ public static void main(String[] args) {
         secondCinemaHall.setCapacity(200);
         secondCinemaHall.setDescription("second hall with capacity 200");
 
-        CinemaHallService cinemaHallService = null;
+        CinemaHallService cinemaHallService
+                = (CinemaHallService) injector.getInstance(CinemaHallService.class);
         cinemaHallService.add(firstCinemaHall);
         cinemaHallService.add(secondCinemaHall);
 
@@ -44,7 +57,8 @@ public static void main(String[] args) {
         yesterdayMovieSession.setMovie(fastAndFurious);
         yesterdayMovieSession.setShowTime(LocalDateTime.now().minusDays(1L));
 
-        MovieSessionService movieSessionService = null;
+        MovieSessionService movieSessionService
+                = (MovieSessionService) injector.getInstance(MovieSessionService.class);
         movieSessionService.add(tomorrowMovieSession);
         movieSessionService.add(yesterdayMovieSession);
 

src/main/java/mate/academy/dao/UserDao.java

@@ -0,0 +1,10 @@
+package mate.academy.dao;
+
+import java.util.Optional;
+import mate.academy.model.User;
+
+public interface UserDao {
+    User add(User user);
+
+    Optional<User> findByEmail(String email);
+}

src/main/java/mate/academy/dao/impl/UserDaoImpl.java

@@ -0,0 +1,47 @@
+package mate.academy.dao.impl;
+
+import java.util.Optional;
+import mate.academy.dao.UserDao;
+import mate.academy.exception.DataProcessingException;
+import mate.academy.lib.Dao;
+import mate.academy.model.User;
+import mate.academy.util.HibernateUtil;
+import org.hibernate.Session;
+import org.hibernate.Transaction;
+
+@Dao
+public class UserDaoImpl implements UserDao {
+
+    @Override
+    public User add(User user) {
+        Transaction transaction = null;
+        Session session = null;
+        try {
+            session = HibernateUtil.getSessionFactory().openSession();
+            transaction = session.beginTransaction();
+            session.persist(user);
+            transaction.commit();
+            return user;
+        } catch (Exception e) {
+            if (transaction != null) {
+                transaction.rollback();
+            }
+            throw new DataProcessingException("Can not insert user " + user, e);
+        } finally {
+            if (session != null) {
+                session.close();
+            }
+        }
+    }
+
+    @Override
+    public Optional<User> findByEmail(String email) {
+        try (Session session = HibernateUtil.getSessionFactory().openSession()) {
+            return session.createQuery("from User u where u.email = :email", User.class)
+                    .setParameter("email", email)
+                    .uniqueResultOptional();
+        } catch (Exception e) {
+            throw new DataProcessingException("Can't get a user by email " + email, e);
+        }
+    }
+}

src/main/java/mate/academy/exception/AuthenticationException.java

@@ -0,0 +1,7 @@
+package mate.academy.exception;
+
+public class AuthenticationException extends Exception {
+    public AuthenticationException(String message) {
+        super(message);
+    }
+}

src/main/java/mate/academy/exception/RegistrationException.java

@@ -0,0 +1,8 @@
+package mate.academy.exception;
+
+public class RegistrationException extends Exception {
+    public RegistrationException(String message) {
+        super(message);
+    }
+
+}

src/main/java/mate/academy/model/User.java

@@ -0,0 +1,62 @@
+package mate.academy.model;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "users")
+public class User {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    private String email;
+    private String password;
+    private byte[] salt;
+
+    public User() {
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public byte[] getSalt() {
+        return salt;
+    }
+
+    public void setSalt(byte[] salt) {
+        this.salt = salt;
+    }
+
+    @Override
+    public String toString() {
+        return "User{"
+                + "id=" + id
+                + ", email='" + email + '\''
+                + ", password='" + password + '\''
+                + '}';
+    }
+}

src/main/java/mate/academy/security/AuthenticationService.java

@@ -0,0 +1,11 @@
+package mate.academy.security;
+
+import mate.academy.exception.AuthenticationException;
+import mate.academy.exception.RegistrationException;
+import mate.academy.model.User;
+
+public interface AuthenticationService {
+    User login(String email, String password) throws AuthenticationException;
+
+    User register(String email, String password) throws RegistrationException;
+}

src/main/java/mate/academy/security/impl/AuthenticationServiceImpl.java

@@ -0,0 +1,44 @@
+package mate.academy.security.impl;
+
+import java.util.Optional;
+import mate.academy.exception.AuthenticationException;
+import mate.academy.exception.RegistrationException;
+import mate.academy.lib.Inject;
+import mate.academy.model.User;
+import mate.academy.security.AuthenticationService;
+import mate.academy.service.UserService;
+import mate.academy.util.HashUtil;
+
+public class AuthenticationServiceImpl implements AuthenticationService {
+    private final UserService userService;
+
+    @Inject
+    public AuthenticationServiceImpl(UserService userService) {
+        this.userService = userService;
+    }
+
+    @Override
+    public User login(String email, String password) throws AuthenticationException {
+        Optional<User> userOptional = userService.findByEmail(email);
+        if (userOptional.isEmpty()) {
+            throw new AuthenticationException("Incorrect email or password");
+        }
+        User user = userOptional.get();
+        String hashedPassword = HashUtil.hashPassword(password, user.getSalt());
+        if (!hashedPassword.equals(user.getPassword())) {
+            throw new AuthenticationException("Incorrect email or password");
+        }
+        return user;
+    }
+
+    @Override
+    public User register(String email, String password) throws RegistrationException {
+        if (userService.findByEmail(email).isPresent()) {
+            throw new RegistrationException("Email already in use");
+        }
+        User user = new User();
+        user.setEmail(email);
+        user.setPassword(password);
+        return userService.add(user);
+    }
+}

src/main/java/mate/academy/service/UserService.java

@@ -0,0 +1,10 @@
+package mate.academy.service;
+
+import java.util.Optional;
+import mate.academy.model.User;
+
+public interface UserService {
+    User add(User user);
+
+    Optional<User> findByEmail(String email);
+}

src/main/java/mate/academy/service/impl/UserServiceImpl.java

@@ -0,0 +1,34 @@
+package mate.academy.service.impl;
+
+import java.util.Optional;
+import mate.academy.dao.UserDao;
+import mate.academy.lib.Inject;
+import mate.academy.lib.Service;
+import mate.academy.model.User;
+import mate.academy.service.UserService;
+import mate.academy.util.HashUtil;
+
+@Service
+public class UserServiceImpl implements UserService {
+    @Inject
+    private UserDao userDao;
+
+    public UserServiceImpl(UserDao userDao) {
+        this.userDao = userDao;
+    }
+
+    public UserServiceImpl() {
+    }
+
+    @Override
+    public User add(User user) {
+        user.setSalt(HashUtil.getSalt());
+        user.setPassword(HashUtil.hashPassword(user.getPassword(), user.getSalt()));
+        return userDao.add(user);
+    }
+
+    @Override
+    public Optional<User> findByEmail(String email) {
+        return userDao.findByEmail(email);
+    }
+}