Feature: 회원가입 및 로그인 구현

cakk-api/src/main/java/com/cakk/api/controller/user/SignController.java

@@ -0,0 +1,32 @@
+package com.cakk.api.controller.user;
+
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import lombok.RequiredArgsConstructor;
+
+import com.cakk.api.dto.request.user.UserSignInRequest;
+import com.cakk.api.dto.request.user.UserSignUpRequest;
+import com.cakk.api.dto.response.user.JwtResponse;
+import com.cakk.api.service.user.UserService;
+import com.cakk.common.response.ApiResponse;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/v1")
+public class SignController {
+
+	private final UserService userService;
+
+	@PostMapping("/sign-up")
+	public ApiResponse<JwtResponse> signUp(@RequestBody UserSignUpRequest request) {
+		return ApiResponse.success(userService.signUp(request));
+	}
+
+	@PostMapping("/sign-in")
+	public ApiResponse<JwtResponse> signIn(@RequestBody UserSignInRequest request) {
+		return ApiResponse.success(userService.signIn(request));
+	}
+}

cakk-api/src/main/java/com/cakk/api/dto/request/user/UserSignInRequest.java

@@ -0,0 +1,14 @@
+package com.cakk.api.dto.request.user;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+
+import com.cakk.common.enums.Provider;
+
+public record UserSignInRequest(
+	@NotNull
+	Provider provider,
+	@NotBlank
+	String idToken
+) {
+}

cakk-api/src/main/java/com/cakk/api/dto/request/user/UserSignUpRequest.java

@@ -0,0 +1,27 @@
+package com.cakk.api.dto.request.user;
+
+import java.time.LocalDate;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+
+import com.cakk.common.enums.Gender;
+import com.cakk.common.enums.Provider;
+
+public record UserSignUpRequest(
+	@NotNull
+	Provider provider,
+	@NotBlank
+	String idToken,
+	String deviceOs,
+	String deviceToken,
+	@NotBlank
+	String nickname,
+	@NotBlank
+	String email,
+	@NotNull
+	LocalDate birthday,
+	@NotNull
+	Gender gender
+) {
+}

cakk-api/src/main/java/com/cakk/api/dto/response/user/JwtResponse.java

@@ -0,0 +1,14 @@
+package com.cakk.api.dto.response.user;
+
+import com.cakk.api.vo.JsonWebToken;
+
+public record JwtResponse(
+	String accessToken,
+	String refreshToken,
+	String grantType
+) {
+
+	public static JwtResponse from(JsonWebToken jwt) {
+		return new JwtResponse(jwt.accessToken(), jwt.refreshToken(), jwt.grantType());
+	}
+}

cakk-api/src/main/java/com/cakk/api/mapper/UserMapper.java

@@ -0,0 +1,25 @@
+package com.cakk.api.mapper;
+
+import com.cakk.api.dto.request.user.UserSignUpRequest;
+import com.cakk.common.enums.Role;
+import com.cakk.domain.entity.user.User;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public class UserMapper {
+
+	public static User supplyUserBy(UserSignUpRequest dto, String providerId) {
+		return User.builder()
+			.provider(dto.provider())
+			.providerId(providerId)
+			.nickname(dto.nickname())
+			.email(dto.email())
+			.gender(dto.gender())
+			.birthday(dto.birthday())
+			.deviceOs(dto.deviceOs())
+			.deviceToken(dto.deviceToken())
+			.role(Role.USER)
+			.build();
+	}
+}

cakk-api/src/main/java/com/cakk/api/service/user/UserService.java

@@ -1,10 +1,42 @@
 package com.cakk.api.service.user;
 
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
+import com.cakk.api.dto.request.user.UserSignInRequest;
+import com.cakk.api.dto.request.user.UserSignUpRequest;
+import com.cakk.api.dto.response.user.JwtResponse;
+import com.cakk.api.factory.OidcProviderFactory;
+import com.cakk.api.mapper.UserMapper;
+import com.cakk.api.provider.jwt.JwtProvider;
+import com.cakk.domain.entity.user.User;
+import com.cakk.domain.repository.reader.UserReader;
+import com.cakk.domain.repository.writer.UserWriter;
 import lombok.RequiredArgsConstructor;
 
 @Service
 @RequiredArgsConstructor
 public class UserService {
+
+	private final OidcProviderFactory oidcProviderFactory;
+	private final JwtProvider jwtProvider;
+
+	private final UserReader userReader;
+	private final UserWriter userWriter;
+
+	@Transactional
+	public JwtResponse signUp(UserSignUpRequest dto) {
+		final String providerId = oidcProviderFactory.getProviderId(dto.provider(), dto.idToken());
+		final User user = userWriter.create(UserMapper.supplyUserBy(dto, providerId));
+
+		return JwtResponse.from(jwtProvider.generateToken(user));
+	}
+
+	@Transactional(readOnly = true)
+	public JwtResponse signIn(UserSignInRequest dto) {
+		final String providerId = oidcProviderFactory.getProviderId(dto.provider(), dto.idToken());
+		final User user = userReader.findByProviderId(providerId);
+
+		return JwtResponse.from(jwtProvider.generateToken(user));
+	}
 }

cakk-common/src/main/java/com/cakk/common/enums/ReturnCode.java

@@ -18,6 +18,7 @@ public enum ReturnCode {
 
 	// 공통 유저 관련 (1200 ~ 1250)
 	WRONG_PROVIDER("1200", "잘못된 인증 제공자 입니다."),
+	NOT_EXIST_USER("1201", "존재하지 않는 유저 입니다."),
 
 	// 클라이언트 에러
 	WRONG_PARAMETER("9000", "잘못된 파라미터 입니다."),

cakk-domain/src/main/java/com/cakk/domain/repository/jpa/UserJpaRepository.java

@@ -1,7 +1,11 @@
 package com.cakk.domain.repository.jpa;
 
+import java.util.Optional;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import com.cakk.domain.entity.user.User;
 
-public interface UserJpaRepository extends JpaRepository<User, Long> { }
+public interface UserJpaRepository extends JpaRepository<User, Long> {
+
+	Optional<User> findByProviderId(String providerId);
+}

cakk-domain/src/main/java/com/cakk/domain/repository/reader/UserReader.java

@@ -15,6 +15,10 @@ public class UserReader {
 	private final UserJpaRepository userJpaRepository;
 
 	public User findByUserId(Long userId) {
-		return userJpaRepository.findById(userId).orElseThrow(() -> new CakkException(ReturnCode.WRONG_PARAMETER));
+		return userJpaRepository.findById(userId).orElseThrow(() -> new CakkException(ReturnCode.NOT_EXIST_USER));
+	}
+
+	public User findByProviderId(String providerId) {
+		return userJpaRepository.findByProviderId(providerId).orElseThrow(() -> new CakkException(ReturnCode.NOT_EXIST_USER));
 	}
 }

cakk-domain/src/main/java/com/cakk/domain/repository/writer/UserWriter.java

@@ -0,0 +1,17 @@
+package com.cakk.domain.repository.writer;
+
+import com.cakk.domain.annotation.Writer;
+import com.cakk.domain.entity.user.User;
+import com.cakk.domain.repository.jpa.UserJpaRepository;
+import lombok.RequiredArgsConstructor;
+
+@Writer
+@RequiredArgsConstructor
+public class UserWriter {
+
+	private final UserJpaRepository userJpaRepository;
+
+	public User create(User user) {
+		return userJpaRepository.save(user);
+	}
+}