Feat/#25 회원가입 로직에서 닉네임 중복 검사 추가

src/main/java/com/pyro/yolog/domain/member/api/SignApi.java

@@ -10,16 +10,16 @@
 public interface SignApi {
     @Operation(
             summary = "회원가입",
-            description = "사용자의 닉네임을 입력받아 회원가입을 진행합니다.",
+            description = "사용자의 닉네임을 입력받아 회원가입을 진행합니다. 중복된 닉네임이 입력되면 false를 반환합니다.",
             security = {@SecurityRequirement(name = "access_token")},
             tags = {"로그인"}
     )
     @ApiResponses(value = {
             @ApiResponse(
-                    responseCode = "200",
+                    responseCode = "201",
                     description = "회원가입이 성공적으로 완료되었습니다."
             )
     })
-    void signUp(@RequestBody SignUpRequest dto);
+    boolean signUp(@RequestBody SignUpRequest dto);
 
 }

src/main/java/com/pyro/yolog/domain/member/api/SignController.java

@@ -14,9 +14,9 @@
 public class SignController {
     private final SignUpService signUpService;
 
-    @ResponseStatus(HttpStatus.OK)
+    @ResponseStatus(HttpStatus.CREATED)
     @PostMapping("/oauth2/sign-up")
-    public void signUp(@RequestBody SignUpRequest request) {
-        signUpService.signUp(request);
+    public boolean signUp(@RequestBody SignUpRequest request) {
+        return signUpService.signUp(request);
     }
 }

src/main/java/com/pyro/yolog/domain/member/entity/Member.java

@@ -32,6 +32,6 @@ public class Member extends BaseTimeEntity {
 
     public void signUp(SignUpRequest dto) {
         this.nickname = dto.getNickname();
-        this.role = Role.USER;
+        this.role = Role.GUEST;
     }
 }

src/main/java/com/pyro/yolog/domain/member/repository/MemberRepository.java

@@ -1,6 +1,7 @@
 package com.pyro.yolog.domain.member.repository;
 
 import com.pyro.yolog.domain.member.entity.Member;
+import com.pyro.yolog.domain.member.entity.Role;
 import com.pyro.yolog.domain.member.entity.SocialType;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
@@ -12,5 +13,8 @@ public interface MemberRepository extends JpaRepository<Member, Long> {
     Optional<Member> findByEmail(String email);
 
     Optional<Member> findBySocialTypeAndOauthId(SocialType socialType, String oauthId);
+
+    boolean existsByNicknameAndRole(String nickname, Role role);
+    boolean existsByNickname(String nickname);
 }
 

src/main/java/com/pyro/yolog/domain/member/service/SignUpService.java

@@ -2,10 +2,11 @@
 
 import com.pyro.yolog.domain.member.dto.SignUpRequest;
 import com.pyro.yolog.domain.member.entity.Member;
+import com.pyro.yolog.domain.member.entity.Role;
 import com.pyro.yolog.domain.member.query.AuthService;
+import com.pyro.yolog.domain.member.repository.MemberRepository;
 import com.pyro.yolog.global.jwt.refresh.service.RefreshTokenService;
 import com.pyro.yolog.global.jwt.service.JwtService;
-import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -17,16 +18,19 @@ public class SignUpService {
     private final AuthService authService;
     private final RefreshTokenService refreshTokenService;
     private final JwtService jwtService;
-    private final HttpServletRequest request;
     private final HttpServletResponse response;
+    private final MemberRepository memberRepository;
 
     @Transactional
-    public void signUp(SignUpRequest request) {
+    public boolean signUp(SignUpRequest request) {
+        if (memberRepository.existsByNickname(request.getNickname())) {
+            return false;
+        }
         Member member = authService.getLoginUser();
         member.signUp(request);
-
         String refreshToken = jwtService.createRefreshToken();
         jwtService.setRefreshTokenHeader(response, refreshToken);
         refreshTokenService.updateToken(member.getEmail(), refreshToken);
+        return true;
     }
 }

src/main/java/com/pyro/yolog/global/config/SecurityConfig.java

@@ -35,9 +35,9 @@ public class SecurityConfig {
     @Bean
     public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
         http
-                .formLogin(AbstractHttpConfigurer::disable)  //FormLogin 사용 X
-                .httpBasic(AbstractHttpConfigurer::disable)  //httpBasic 사용 X
-                .csrf(AbstractHttpConfigurer::disable)  //csrf 보안 사용 X
+                .formLogin(AbstractHttpConfigurer::disable)
+                .httpBasic(AbstractHttpConfigurer::disable)
+                .csrf(AbstractHttpConfigurer::disable)
                 .headers(c -> c.frameOptions(HeadersConfigurer.FrameOptionsConfig::disable).disable())
                 .sessionManagement(sessionManagement ->
                         sessionManagement.sessionCreationPolicy(SessionCreationPolicy.STATELESS)

src/main/java/com/pyro/yolog/global/oauth2/OAuthAttributes.java

@@ -41,7 +41,7 @@ public Member toEntity(SocialType socialType, OAuth2UserInfo oauth2UserInfo) {
                 .email(oauth2UserInfo.getEmail())
                 .nickname(oauth2UserInfo.getNickname())
                 .imageUrl(oauth2UserInfo.getImageUrl())
-                .role(Role.USER)
+                .role(Role.GUEST)
                 .status(Status.ACTIVE)
                 .build();
     }