Feat: 깃허브 로그인 연동

Author: joyewon0705

src/main/java/com/back/domain/user/controller/AuthControllerDocs.java

@@ -292,14 +292,6 @@ ResponseEntity<RsData<LoginResponse>> login(
                     content = @Content(
                             mediaType = "application/json",
                             examples = {
-                                    @ExampleObject(name = "이메일 없음", value = """
-                                            {
-                                              "success": false,
-                                              "code": "AUTH_010",
-                                              "message": "소셜 계정에서 이메일 정보를 확인할 수 없습니다.",
-                                              "data": null
-                                            }
-                                            """),
                                     @ExampleObject(name = "필수 정보 누락", value = """
                                             {
                                               "success": false,
@@ -311,7 +303,7 @@ ResponseEntity<RsData<LoginResponse>> login(
                                     @ExampleObject(name = "인증 처리 실패", value = """
                                             {
                                               "success": false,
-                                              "code": "AUTH_011",
+                                              "code": "AUTH_010",
                                               "message": "소셜 로그인 인증에 실패했습니다.",
                                               "data": null
                                             }

src/main/java/com/back/global/exception/ErrorCode.java

@@ -68,8 +68,7 @@ public enum ErrorCode {
     ACCESS_DENIED(HttpStatus.FORBIDDEN, "AUTH_007", "권한이 없습니다."),
     UNSUPPORTED_OAUTH_PROVIDER(HttpStatus.BAD_REQUEST, "AUTH_008", "지원하지 않는 소셜 로그인 제공자입니다."),
     OAUTH2_ATTRIBUTE_MISSING(HttpStatus.UNAUTHORIZED, "AUTH_009", "소셜 계정에서 필요한 사용자 정보를 가져올 수 없습니다."),
-    OAUTH2_EMAIL_NOT_FOUND(HttpStatus.UNAUTHORIZED, "AUTH_010", "소셜 계정에서 이메일 정보를 확인할 수 없습니다."),
-    OAUTH2_AUTHENTICATION_FAILED(HttpStatus.UNAUTHORIZED, "AUTH_011", "소셜 로그인 인증에 실패했습니다.");
+    OAUTH2_AUTHENTICATION_FAILED(HttpStatus.UNAUTHORIZED, "AUTH_010", "소셜 로그인 인증에 실패했습니다.");
 
 
     private final HttpStatus status;

src/main/java/com/back/global/security/oauth/CustomOAuth2UserService.java

@@ -45,13 +45,11 @@ public OAuth2User loadUser(OAuth2UserRequest userRequest) throws OAuth2Authentic
                 case "kakao" -> new KakaoOAuth2UserInfo(attributes);
                 case "naver" -> new NaverOAuth2UserInfo(attributes);
                 case "google" -> new GoogleOAuth2UserInfo(attributes);
+                case "github" -> new GithubOAuth2UserInfo(attributes);
                 default -> throw new CustomException(ErrorCode.UNSUPPORTED_OAUTH_PROVIDER);
             };
 
             // 필수 정보 검증
-            if (userInfo.getEmail() == null || userInfo.getEmail().isBlank()) {
-                throw new CustomException(ErrorCode.OAUTH2_EMAIL_NOT_FOUND);
-            }
             if (userInfo.getProviderId() == null) {
                 throw new CustomException(ErrorCode.OAUTH2_ATTRIBUTE_MISSING);
             }

src/main/java/com/back/global/security/oauth/GithubOAuth2UserInfo.java

@@ -0,0 +1,39 @@
+package com.back.global.security.oauth;
+
+import java.util.Map;
+
+/**
+ * 깃허브 OAuth2 사용자 정보 구현체
+ */
+public class GithubOAuth2UserInfo implements OAuth2UserInfo {
+    private final Map<String, Object> attributes;
+
+    public GithubOAuth2UserInfo(Map<String, Object> attributes) {
+        this.attributes = attributes;
+    }
+
+    @Override
+    public String getProvider() {
+        return "github";
+    }
+
+    @Override
+    public String getProviderId() {
+        return String.valueOf(attributes.get("id")); // GitHub user id
+    }
+
+    @Override
+    public String getEmail() {
+        return (String) attributes.get("email"); // 이메일 공개 설정 안 돼 있으면 null
+    }
+
+    @Override
+    public String getNickname() {
+        return (String) attributes.get("login"); // GitHub username
+    }
+
+    @Override
+    public String getProfileImageUrl() {
+        return (String) attributes.get("avatar_url");
+    }
+}

src/main/resources/application-dev.yml

@@ -50,6 +50,13 @@ spring:
             scope:
               - email
               - profile
+          github:
+            client-id: ${GITHUB_CLIENT_ID}
+            client-secret: ${GITHUB_CLIENT_SECRET}
+            client-name: GitHub
+            authorization-grant-type: authorization_code
+            redirect-uri: "{baseUrl}/login/oauth2/code/{registrationId}"
+            scope: user:email
         provider:
           kakao:
             authorization-uri: https://kauth.kakao.com/oauth/authorize
@@ -66,6 +73,11 @@ spring:
             token-uri: https://oauth2.googleapis.com/token
             user-info-uri: https://www.googleapis.com/oauth2/v3/userinfo
             user-name-attribute: sub
+          github:
+            authorization-uri: https://github.com/login/oauth/authorize
+            token-uri: https://github.com/login/oauth/access_token
+            user-info-uri: https://api.github.com/user
+            user-name-attribute: id
 
 springdoc:
   default-produces-media-type: application/json;charset=UTF-8

src/main/resources/application-test.yml

@@ -31,6 +31,13 @@ spring:
             scope:
               - email
               - profile
+          github:
+            client-id: dummy-github-client-id
+            client-secret: dummy-github-client-secret
+            client-name: GitHub
+            authorization-grant-type: authorization_code
+            redirect-uri: "{baseUrl}/login/oauth2/code/{registrationId}"
+            scope: user:email
         provider:
           kakao:
             authorization-uri: https://kauth.kakao.com/oauth/authorize
@@ -47,6 +54,11 @@ spring:
             token-uri: https://oauth2.googleapis.com/token
             user-info-uri: https://www.googleapis.com/oauth2/v3/userinfo
             user-name-attribute: sub
+          github:
+            authorization-uri: https://github.com/login/oauth/authorize
+            token-uri: https://github.com/login/oauth/access_token
+            user-info-uri: https://api.github.com/user
+            user-name-attribute: id
 
 jwt:
   secret: test-jwt-secret-key-12345678901234567890