feat: login 서비스 구현

server/src/main/java/com/ticketing/server/user/service/UserServiceImpl.java

@@ -5,6 +5,7 @@ import com.ticketing.server.user.domain.User;
 import com.ticketing.server.user.domain.repository.UserRepository;
 import com.ticketing.server.user.service.dto.ChangePasswordDTO;
 import com.ticketing.server.user.service.dto.DeleteUserDTO;
+import com.ticketing.server.user.service.dto.LoginDTO;
 import com.ticketing.server.user.service.dto.SignUpDTO;
 import com.ticketing.server.user.service.interfaces.UserService;
 import java.util.Optional;
@@ -24,6 +25,20 @@ public class UserServiceImpl implements UserService {
 
 	private final UserRepository userRepository;
 
+
+	@Override
+	public User login(LoginDTO loginDto) {
+		Optional<User> optionalUser = userRepository.findByEmailAndIsDeletedFalse(loginDto.getEmail());
+		if (optionalUser.isEmpty()) {
+			log.error("존재하지 않는 이메일 입니다. :: {}", loginDto);
+			throw new NotFoundEmailException();
+		}
+
+		User user = optionalUser.get();
+		user.checkPassword(loginDto);
+		return user;
+	}
+
 	@Override
 	@Transactional
 	public User register(@Valid SignUpDTO signUpDto) {

server/src/main/java/com/ticketing/server/user/service/dto/LoginDTO.java

@@ -0,0 +1,41 @@
+package com.ticketing.server.user.service.dto;
+
+import javax.validation.constraints.Email;
+import javax.validation.constraints.NotEmpty;
+import lombok.Getter;
+import org.springframework.security.crypto.password.PasswordEncoder;
+
+@Getter
+public class LoginDTO implements PasswordMatches {
+
+	public LoginDTO() {
+	}
+
+	public LoginDTO(String email, String password, PasswordEncoder passwordEncoder) {
+		this.email = email;
+		this.password = password;
+		this.passwordEncoder = passwordEncoder;
+	}
+
+	@NotEmpty(message = "{validation.not.empty.email}")
+	@Email(message = "{validation.email}")
+	private String email;
+
+	@NotEmpty(message = "{validation.not.empty.password}")
+	private String password;
+
+	private PasswordEncoder passwordEncoder;
+
+	@Override
+	public boolean passwordMatches(String encodedPassword) {
+		return passwordEncoder.matches(this.password, encodedPassword);
+	}
+
+	@Override
+	public String toString() {
+		return "LoginDTO{" +
+			"email='" + email + '\'' +
+			'}';
+	}
+
+}

server/src/main/java/com/ticketing/server/user/service/interfaces/UserService.java

@@ -3,11 +3,14 @@ package com.ticketing.server.user.service.interfaces;
 import com.ticketing.server.user.domain.User;
 import com.ticketing.server.user.service.dto.ChangePasswordDTO;
 import com.ticketing.server.user.service.dto.DeleteUserDTO;
+import com.ticketing.server.user.service.dto.LoginDTO;
 import com.ticketing.server.user.service.dto.SignUpDTO;
 import javax.validation.Valid;
 
 public interface UserService {
 
+	User login(@Valid LoginDTO loginDto);
+
 	User register(@Valid SignUpDTO signUpDto);
 
 	User delete(@Valid DeleteUserDTO deleteUserDto);

server/src/test/java/com/ticketing/server/user/service/UserServiceImplTest.java

@@ -6,12 +6,14 @@ import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.when;
 
 import com.ticketing.server.global.exception.NotFoundEmailException;
+import com.ticketing.server.global.exception.PasswordMismatchException;
 import com.ticketing.server.user.domain.User;
 import com.ticketing.server.user.domain.UserGrade;
 import com.ticketing.server.user.domain.repository.UserRepository;
 import com.ticketing.server.user.service.dto.ChangePasswordDTO;
 import com.ticketing.server.user.service.dto.DeleteUserDTO;
 import com.ticketing.server.user.service.dto.DeleteUserDtoTest;
+import com.ticketing.server.user.service.dto.LoginDTO;
 import com.ticketing.server.user.service.dto.SignUpDTO;
 import java.util.Optional;
 import org.junit.jupiter.api.BeforeEach;
@@ -120,4 +122,44 @@ class UserServiceImplTest {
 		assertThat(user).isNotNull();
 	}
 
+	@Test
+	@DisplayName("로그인 성공 시")
+	void loginSuccess() {
+		// given
+		LoginDTO loginDTO = new LoginDTO("ticketing@gmail.com", "123456", DeleteUserDtoTest.CUSTOM_PASSWORD_ENCODER);
+		when(userRepository.findByEmailAndIsDeletedFalse("ticketing@gmail.com")).thenReturn(Optional.of(user));
+
+		// when
+		User user = userService.login(loginDTO);
+
+		// then
+		assertThat(user).isInstanceOf(User.class);
+	}
+
+	@Test
+	@DisplayName("로그인 시도 시 이메일이 없을 경우")
+	void loginNotFoundEmail() {
+		// given
+		LoginDTO loginDTO = new LoginDTO("ticketing1@gmail.com", "123456", DeleteUserDtoTest.CUSTOM_PASSWORD_ENCODER);
+		when(userRepository.findByEmailAndIsDeletedFalse(any())).thenReturn(Optional.empty());
+
+		// when
+		// then
+		assertThatThrownBy(() -> userService.login(loginDTO))
+			.isInstanceOf(NotFoundEmailException.class);
+	}
+
+	@Test
+	@DisplayName("로그인 시도 시 패스워드가 일치하지 않을 경우")
+	void loginPasswordMatchesFail() {
+		// given
+		LoginDTO loginDTO = new LoginDTO("ticketing@gmail.com", "1234567", DeleteUserDtoTest.CUSTOM_PASSWORD_ENCODER);
+		when(userRepository.findByEmailAndIsDeletedFalse("ticketing@gmail.com")).thenReturn(Optional.of(user));
+
+		// when
+		// then
+		assertThatThrownBy(() -> userService.login(loginDTO))
+			.isInstanceOf(PasswordMismatchException.class);
+	}
+
 }