Feat: Naver login 구현

src/main/java/com/gongjakso/server/domain/member/enumerate/LoginType.java

@@ -1,5 +1,5 @@
 package com.gongjakso.server.domain.member.enumerate;
 
 public enum LoginType {
-    GENERAL, KAKAO , GOOGLE
+    GENERAL, KAKAO , GOOGLE, NAVER
 }

src/main/java/com/gongjakso/server/domain/member/service/AuthService.java

@@ -14,6 +14,9 @@
 import com.gongjakso.server.global.security.kakao.KakaoClient;
 import com.gongjakso.server.global.security.kakao.dto.KakaoProfile;
 import com.gongjakso.server.global.security.kakao.dto.KakaoToken;
+import com.gongjakso.server.global.security.naver.NaverClient;
+import com.gongjakso.server.global.security.naver.dto.NaverProfile;
+import com.gongjakso.server.global.security.naver.dto.NaverToken;
 import com.gongjakso.server.global.util.redis.RedisClient;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -29,6 +32,7 @@ public class AuthService {
     private final RedisClient redisClient;
     private final TokenProvider tokenProvider;
     private final MemberRepository memberRepository;
+    private final NaverClient naverClient;
 
     @Transactional
     public LoginRes signIn(String code, String redirectUri, String type) {
@@ -39,7 +43,7 @@ public LoginRes signIn(String code, String redirectUri, String type) {
         Member member = switch (loginType) {
             case KAKAO -> kakaoMember(code, redirectUri);
             case GOOGLE -> googleMember(code, redirectUri);
-
+            case NAVER -> naverMember(code, redirectUri);
             default -> null;
         };
 
@@ -103,6 +107,30 @@ private Member googleMember(String code, String redirectUri) {
         return member;
     }
 
+    private Member naverMember(String code, String redirectUri){
+        // 네이버로 액세스 토큰 요청하기
+        NaverToken naverAccessToken = naverClient.getNaverAccessToken(code, redirectUri);
+
+        // 네이버에 있는 사용자 정보 반환
+        NaverProfile naverProfile = naverClient.getMemberInfo(naverAccessToken);
+
+        // 반환된 정보의 이메일 기반으로 사용자 테이블에서 계정 정보 조회 진행
+        // 이메일 존재 시 로그인 , 존재하지 않을 경우 회원가입 진행
+        Member member = memberRepository.findMemberByEmailAndDeletedAtIsNull(naverProfile.response().email()).orElse(null);
+
+        if(member == null) {
+            Member newMember = Member.builder()
+                    .email(naverProfile.response().email())
+                    .name(naverProfile.response().name())
+                    .memberType("GENERAL")
+                    .loginType("NAVER")
+                    .build();
+
+            return memberRepository.save(newMember);
+        }
+        return member;
+    }
+
     public void signOut(String token, Member member) {
         // Validation
         String accessToken = token.substring(7);

src/main/java/com/gongjakso/server/global/security/naver/NaverClient.java

@@ -0,0 +1,101 @@
+package com.gongjakso.server.global.security.naver;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.gongjakso.server.global.security.naver.dto.NaverProfile;
+import com.gongjakso.server.global.security.naver.dto.NaverToken;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.reactive.function.BodyInserters;
+import org.springframework.web.reactive.function.client.WebClient;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class NaverClient {
+
+    @Value("${spring.security.oauth2.client.provider.naver.token-uri}")
+    private String naverTokenUri;
+
+    @Value("${spring.security.oauth2.client.registration.naver.client-id}")
+    private String naverClientId;
+
+    @Value("${spring.security.oauth2.client.registration.naver.authorization-grant-type}")
+    private String naverGrantType;
+
+    @Value("${spring.security.oauth2.client.registration.naver.client-secret}")
+    private String naverClientSecret;
+
+    @Value("${spring.security.oauth2.client.provider.naver.user-info-uri}")
+    private String naverUserInfoUri;
+
+    @Value("${spring.security.oauth2.client.provider.naver.authorization-uri}")
+    private String naverAuthorizationUri;
+
+    /**
+     * 네이버 서버에 인가코드 기반으로 사용자의 토큰 정보를 조회하는 메소드
+     * @param code - 네이버에서 발급해준 인가 코드
+     * @return - 네이버에서 반환한 응답 토큰 객체
+     */
+    public NaverToken getNaverAccessToken(String code, String redirectUri) {
+        // 요청 보낼 객체 기본 생성
+        WebClient webClient = WebClient.create(naverTokenUri);
+
+        //요청 본문
+        MultiValueMap<String , String> params = new LinkedMultiValueMap<>();
+        params.add("grant_type", naverGrantType);
+        params.add("client_id", naverClientId);
+        params.add("redirect_uri", redirectUri);
+        params.add("code", code);
+        params.add("client_secret", naverClientSecret);
+
+        // 요청 보내기 및 응답 수신
+        String response = webClient.post()
+                .uri(naverTokenUri)
+                .header("Content-type", "application/x-www-form-urlencoded")
+                .body(BodyInserters.fromFormData(params))
+                .retrieve() // 데이터 받는 방식, 스프링에서는 exchange는 메모리 누수 가능성 때문에 retrieve 권장
+                .bodyToMono(String.class) // (Mono는 단일 데이터, Flux는 복수 데이터)
+                .block();// 비동기 방식의 데이터 수신
+
+        // 수신된 응답 Mapping
+        ObjectMapper objectMapper = new ObjectMapper();
+        NaverToken naverToken;
+        try {
+            naverToken = objectMapper.readValue(response, NaverToken.class);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+
+        return naverToken;
+    }
+
+    public NaverProfile getMemberInfo(NaverToken naverToken) {
+        // 요청 기본 객체 생성
+        WebClient webClient = WebClient.create(naverUserInfoUri);
+
+        // 요청 보내서 응답 받기
+        String response = webClient.post()
+                .uri(naverUserInfoUri)
+                .header("Content-Type", "application/x-www-form-urlencoded;charset=utf-8")
+                .header("Authorization", "Bearer " + naverToken.access_token())
+                .retrieve()
+                .bodyToMono(String.class)
+                .block();
+
+        // 수신된 응답 Mapping
+        ObjectMapper objectMapper = new ObjectMapper();
+        NaverProfile naverProfile;
+        try {
+            naverProfile = objectMapper.readValue(response, NaverProfile.class);
+
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+
+        return naverProfile;
+    }
+}

src/main/java/com/gongjakso/server/global/security/naver/NaverUserService.java

@@ -0,0 +1,18 @@
+package com.gongjakso.server.global.security.naver;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.oauth2.client.userinfo.DefaultOAuth2UserService;
+import org.springframework.security.oauth2.client.userinfo.OAuth2UserRequest;
+import org.springframework.security.oauth2.core.OAuth2AuthenticationException;
+import org.springframework.security.oauth2.core.user.OAuth2User;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class NaverUserService extends DefaultOAuth2UserService {
+
+    @Override
+    public OAuth2User loadUser(OAuth2UserRequest oAuth2UserRequest) throws OAuth2AuthenticationException {
+        return null;
+    }
+}

src/main/java/com/gongjakso/server/global/security/naver/dto/NaverProfile.java

@@ -0,0 +1,25 @@
+package com.gongjakso.server.global.security.naver.dto;
+
+import lombok.Builder;
+
+@Builder
+public record NaverProfile(
+        String resultcode,
+        String message,
+        NaverProfileResponse response
+) {
+    public record NaverProfileResponse(
+            String id,
+            String name,
+            String nickname,
+            String profile_image,
+            String email,
+            String age,
+            String birthday,
+            String gender,
+            String mobile,
+            String mobile_e164,
+            String birthyear
+    ) {
+    }
+}

src/main/java/com/gongjakso/server/global/security/naver/dto/NaverToken.java

@@ -0,0 +1,16 @@
+package com.gongjakso.server.global.security.naver.dto;
+
+import jakarta.validation.constraints.Null;
+import lombok.Builder;
+
+@Builder
+public record NaverToken(
+        String access_token,
+        @Null
+        String refresh_token,
+        int expires_in,
+        String token_type,
+        String error,
+        String error_description
+) {
+}