[feat] 로그인한 유저 정보 불러오기 API에 단체 추가

src/main/java/org/pingle/pingleserver/domain/User.java

@@ -9,6 +9,7 @@
 import org.pingle.pingleserver.domain.enums.URole;
 
 import java.time.LocalDateTime;
+import java.util.List;
 
 @Entity
 @Getter
@@ -41,6 +42,9 @@ public class User {
 
     private LocalDateTime deletedAt;
 
+    @OneToMany(mappedBy = "user")
+    private List<UserTeam> userTeams;
+
     @Builder
     public User(String serialId, String name, String email, Provider provider, URole role, String refreshToken) {
         this.serialId = serialId;

src/main/java/org/pingle/pingleserver/dto/response/SimpleGroupInfo.java

@@ -0,0 +1,9 @@
+package org.pingle.pingleserver.dto.response;
+
+import org.pingle.pingleserver.domain.UserTeam;
+
+public record SimpleGroupInfo(Long id, String name) {
+    public static SimpleGroupInfo of(UserTeam userTeam) {
+        return new SimpleGroupInfo(userTeam.getTeam().getId(), userTeam.getTeam().getName());
+    }
+}

src/main/java/org/pingle/pingleserver/dto/response/UserInfoResponse.java

@@ -1,10 +1,21 @@
 package org.pingle.pingleserver.dto.response;
 
 import org.pingle.pingleserver.domain.User;
+import org.pingle.pingleserver.domain.UserTeam;
 import org.pingle.pingleserver.domain.enums.Provider;
 
-public record UserInfoResponse(Long id, String name, String email, Provider provider){
+import java.util.List;
+import java.util.stream.Collectors;
+
+public record UserInfoResponse(Long id, String name, String email, Provider provider, List<SimpleGroupInfo> groups){
     public static UserInfoResponse of(User user){
-        return new UserInfoResponse(user.getId(), user.getName(), user.getEmail(), user.getProvider());
+        return new UserInfoResponse(user.getId(), user.getName(),
+                user.getEmail(), user.getProvider(), getSimpleGroupsInfo(user.getUserTeams()));
+    }
+
+    private static List<SimpleGroupInfo> getSimpleGroupsInfo(List<UserTeam> userTeams){
+        return userTeams.stream()
+                .map(SimpleGroupInfo::of)
+                .collect(Collectors.toList());
     }
 }