GET /users/my/groups 구현

내가 속한 그룹 목록 조회

back/src/main/kotlin/knu/dong/onedayonebaek/containgroup/repository/ContainGroupRepository.kt

@@ -14,4 +14,7 @@ interface ContainGroupRepository: JpaRepository<ContainGroup, Long> {
 
     @EntityGraph(attributePaths = ["user"])
     fun findAllByGroup(group: Group): List<ContainGroup>
+
+    @EntityGraph(attributePaths = ["group"])
+    fun findAllByUser(user: User): List<ContainGroup>
 }

back/src/main/kotlin/knu/dong/onedayonebaek/group/repository/GroupRepository.kt

@@ -7,4 +7,5 @@ import java.util.*
 interface GroupRepository: JpaRepository<Group, Long> {
 
     fun findByInviteCode(inviteCode: String): Optional<Group>
+
 }

back/src/main/kotlin/knu/dong/onedayonebaek/group/service/GroupService.kt

@@ -19,7 +19,6 @@ import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
 import java.time.LocalDate
 import java.time.YearMonth
-import java.util.stream.Collectors
 
 private val myLogger = KotlinLogging.logger {}
 
@@ -32,11 +31,11 @@ class GroupService (
     private val problemRepository: ProblemRepository,
     private val passwordEncoder: PasswordEncoder
 ){
-    fun getGroups(): List<GroupOfListDto> =
-        groupRepository.findAll()
-            .stream()
-            .map { it.toGroupOfListDto() }
-            .collect(Collectors.toList())
+    fun getGroups(): List<GroupOfListDto> = groupRepository.findAll().map { it.toGroupOfListDto() }
+
+
+    fun getGroupsOfUser(user: User): List<GroupOfListDto> =
+        containGroupRepository.findAllByUser(user).map { it.group.toGroupOfListDto() }
 
     fun getGroupDetail(user: User, groupId: Long): GroupDetailDto {
         val group = groupRepository.findById(groupId).orElseThrow{ NotFoundException(message = "해당 그룹이 없습니다.") }

back/src/main/kotlin/knu/dong/onedayonebaek/user/controller/UserController.kt

@@ -8,6 +8,8 @@ import io.swagger.v3.oas.annotations.responses.ApiResponse
 import io.swagger.v3.oas.annotations.responses.ApiResponses
 import io.swagger.v3.oas.annotations.tags.Tag
 import knu.dong.onedayonebaek.common.exception.response.UnauthorizedResponse
+import knu.dong.onedayonebaek.group.dto.GroupOfListDto
+import knu.dong.onedayonebaek.group.service.GroupService
 import knu.dong.onedayonebaek.user.domain.User
 import knu.dong.onedayonebaek.user.dto.toUserDto
 import org.springframework.security.core.Authentication
@@ -18,7 +20,9 @@ import org.springframework.web.bind.annotation.RestController
 @RestController
 @RequestMapping("/users")
 @Tag(name = "User APIs", description = "유저 정보와 관련된 APIs")
-class UserController {
+class UserController(
+    private val groupService: GroupService
+) {
 
     @Operation(
         summary = "로그인된 유저의 정보 조회",
@@ -38,4 +42,12 @@ class UserController {
     )
     @GetMapping
     fun loginUserInfo(authentication: Authentication) = (authentication.principal as User).toUserDto()
+
+
+    @GetMapping("/my/groups")
+    fun getMyGroups(authentication: Authentication): List<GroupOfListDto> {
+        val user = authentication.principal as User
+
+        return groupService.getGroupsOfUser(user)
+    }
 }