✨ Feature: 구글 로그인 기능 구현 (#92)

moodoodle-api/src/main/java/zzangdol/auth/implement/AuthService.java

@@ -15,6 +15,7 @@
 import zzangdol.jwt.JwtResponse;
 import zzangdol.jwt.JwtService;
 import zzangdol.oauth.client.SocialLoginClient;
+import zzangdol.oauth.dto.GoogleUserInfoResponse;
 import zzangdol.oauth.dto.KakaoUserInfoResponse;
 import zzangdol.oauth.dto.SocialUserInfoResponse;
 import zzangdol.response.status.ErrorStatus;
@@ -35,13 +36,18 @@ public class AuthService {
 
     private static final int RANDOM_PASSWORD_LENGTH = 10;
 
-    public AuthService(PasswordEncoder passwordEncoder, UserRepository userRepository, JwtService jwtService,
-                       SocialLoginClient<KakaoUserInfoResponse> kakaoLoginClient /*, SocialLoginClient<NaverUserInfoResponse> naverLoginClient */) {
+    public AuthService(PasswordEncoder passwordEncoder,
+                       UserRepository userRepository,
+                       JwtService jwtService,
+                       SocialLoginClient<KakaoUserInfoResponse> kakaoLoginClient,
+                       SocialLoginClient<GoogleUserInfoResponse> googleLoginClient
+            /*, SocialLoginClient<NaverUserInfoResponse> naverLoginClient */) {
         this.passwordEncoder = passwordEncoder;
         this.userRepository = userRepository;
         this.jwtService = jwtService;
         this.socialLoginClients = new EnumMap<>(AuthProvider.class);
         this.socialLoginClients.put(AuthProvider.KAKAO, kakaoLoginClient);
+        this.socialLoginClients.put(AuthProvider.GOOGLE, googleLoginClient);
         // this.socialLoginClients.put(AuthProvider.NAVER, naverLoginClient);
     }
 

moodoodle-domain/src/main/java/zzangdol/user/domain/AuthProvider.java

@@ -1,5 +1,5 @@
 package zzangdol.user.domain;
 
 public enum AuthProvider {
-    KAKAO, NAVER, APPLE, DEFAULT
+    KAKAO, GOOGLE, NAVER, APPLE, DEFAULT
 }

moodoodle-domain/src/main/java/zzangdol/user/domain/User.java

@@ -1,5 +1,6 @@
 package zzangdol.user.domain;
 
+import jakarta.persistence.Column;
 import jakarta.persistence.Entity;
 import jakarta.persistence.EnumType;
 import jakarta.persistence.Enumerated;
@@ -33,6 +34,7 @@ public class User extends BaseTimeEntity implements UserDetails {
     private LocalTime notificationTime;
     private Boolean isRead;
 
+    @Column(nullable = false, length = 50)
     @Enumerated(EnumType.STRING)
     private AuthProvider authProvider;
 

moodoodle-infrastructure/src/main/java/zzangdol/oauth/client/google/GoogleLoginClient.java

@@ -0,0 +1,21 @@
+package zzangdol.oauth.client.google;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import zzangdol.oauth.client.SocialLoginClient;
+import zzangdol.oauth.dto.GoogleTokenResponse;
+import zzangdol.oauth.dto.GoogleUserInfoResponse;
+
+@RequiredArgsConstructor
+@Service
+public class GoogleLoginClient implements SocialLoginClient<GoogleUserInfoResponse> {
+
+    private final GoogleLoginTokenClient googleLoginTokenClient;
+    private final GoogleLoginUserClient googleLoginUserClient;
+
+    @Override
+    public GoogleUserInfoResponse getUserInfo(String authorizationCode) {
+        GoogleTokenResponse tokenInfo = googleLoginTokenClient.getTokenInfo(authorizationCode);
+        return googleLoginUserClient.getUserInfo(tokenInfo.getAccessToken());
+    }
+}

moodoodle-infrastructure/src/main/java/zzangdol/oauth/client/google/GoogleLoginTokenClient.java

@@ -0,0 +1,68 @@
+package zzangdol.oauth.client.google;
+
+import jakarta.annotation.PostConstruct;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.MediaType;
+import org.springframework.stereotype.Component;
+import org.springframework.web.reactive.function.BodyInserters;
+import org.springframework.web.reactive.function.client.WebClient;
+import reactor.core.publisher.Mono;
+import zzangdol.oauth.dto.GoogleTokenResponse;
+
+@Slf4j
+@Component
+public class GoogleLoginTokenClient {
+
+    private WebClient webClient;
+
+    @Value("${google.token.uri}")
+    private String TOKEN_URI;
+
+    @Value("${google.redirect.uri}")
+    private String REDIRECT_URI;
+
+    @Value("${google.grant.type}")
+    private String GRANT_TYPE;
+
+    @Value("${google.client.id}")
+    private String CLIENT_ID;
+
+    @Value("${google.client.secret}")
+    private String CLIENT_SECRET;
+
+    @Value("${google.scope}")
+    private String SCOPE;
+
+    @Value("${google.response_type}")
+    private String RESPONSE_TYPE;
+
+    @PostConstruct
+    private void init() {
+        this.webClient = WebClient.builder()
+                .baseUrl(TOKEN_URI)
+                .build();
+    }
+
+    public GoogleTokenResponse getTokenInfo(final String code) {
+        log.info("Requesting token with code: {}", code);
+
+        return webClient.post()
+                .uri("")
+                .contentType(MediaType.APPLICATION_FORM_URLENCODED)
+                .body(BodyInserters.fromFormData("grant_type", GRANT_TYPE)
+                        .with("client_id", CLIENT_ID)
+                        .with("redirect_uri", REDIRECT_URI)
+                        .with("code", code)
+                        .with("client_secret", CLIENT_SECRET))
+                .retrieve()
+                .onStatus(status -> status.is4xxClientError() || status.is5xxServerError(), clientResponse -> clientResponse.bodyToMono(String.class)
+                        .flatMap(response -> {
+                            log.error("Error Response: {}", response);
+                            return Mono.error(new RuntimeException("Error Response: " + response));
+                        }))
+                .bodyToMono(GoogleTokenResponse.class)
+                .block();
+    }
+
+}

moodoodle-infrastructure/src/main/java/zzangdol/oauth/client/google/GoogleLoginUserClient.java

@@ -0,0 +1,31 @@
+package zzangdol.oauth.client.google;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+import org.springframework.web.reactive.function.client.WebClient;
+import zzangdol.oauth.dto.GoogleUserInfoResponse;
+
+@Slf4j
+@Component
+public class GoogleLoginUserClient {
+
+    private final WebClient webClient;
+
+    private static final String USER_INFO_URI = "https://www.googleapis.com/oauth2/v3/userinfo";
+
+    public GoogleLoginUserClient() {
+        this.webClient = WebClient.builder()
+                .baseUrl(USER_INFO_URI)
+                .build();
+    }
+
+    public GoogleUserInfoResponse getUserInfo(final String token) {
+        return webClient.get()
+                .uri("")
+                .header("Authorization", "Bearer " + token)
+                .retrieve()
+                .bodyToMono(GoogleUserInfoResponse.class)
+                .block();
+    }
+
+}

moodoodle-infrastructure/src/main/java/zzangdol/oauth/client/KakaoLoginClient.java → moodoodle-infrastructure/src/main/java/zzangdol/oauth/client/kakao/KakaoLoginClient.java

@@ -1,7 +1,8 @@
-package zzangdol.oauth.client;
+package zzangdol.oauth.client.kakao;
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
+import zzangdol.oauth.client.SocialLoginClient;
 import zzangdol.oauth.dto.KakaoTokenResponse;
 import zzangdol.oauth.dto.KakaoUserInfoResponse;
 

moodoodle-infrastructure/src/main/java/zzangdol/oauth/client/KakaoLoginTokenClient.java → moodoodle-infrastructure/src/main/java/zzangdol/oauth/client/kakao/KakaoLoginTokenClient.java

@@ -1,4 +1,4 @@
-package zzangdol.oauth.client;
+package zzangdol.oauth.client.kakao;
 
 import jakarta.annotation.PostConstruct;
 import lombok.extern.slf4j.Slf4j;

moodoodle-infrastructure/src/main/java/zzangdol/oauth/client/KakaoLoginUserClient.java → moodoodle-infrastructure/src/main/java/zzangdol/oauth/client/kakao/KakaoLoginUserClient.java

@@ -1,4 +1,4 @@
-package zzangdol.oauth.client;
+package zzangdol.oauth.client.kakao;
 
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;

moodoodle-infrastructure/src/main/java/zzangdol/oauth/dto/GoogleTokenResponse.java

@@ -0,0 +1,22 @@
+package zzangdol.oauth.dto;
+
+import com.fasterxml.jackson.databind.PropertyNamingStrategies;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+public class GoogleTokenResponse {
+
+    private String accessToken;
+    private int expiresIn;
+    private String refreshToken;
+    private String scope;
+    private String tokenType;
+    private String idToken;
+
+}

moodoodle-infrastructure/src/main/java/zzangdol/oauth/dto/GoogleUserInfoResponse.java

@@ -0,0 +1,20 @@
+package zzangdol.oauth.dto;
+
+import lombok.AllArgsConstructor;
+
+@AllArgsConstructor
+public class GoogleUserInfoResponse implements SocialUserInfoResponse {
+
+    private String email;
+    private String name;
+
+    @Override
+    public String getEmail() {
+        return this.email;
+    }
+
+    @Override
+    public String getNickname() {
+        return this.name;
+    }
+}