feat: 관리자 역할 변경 기능 구현

Author: tnals0924

src/main/kotlin/site/billilge/api/backend/domain/member/controller/AdminMemberApi.kt

@@ -5,9 +5,14 @@ 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 org.springframework.http.ResponseEntity
+import io.swagger.v3.oas.annotations.media.Content
+import io.swagger.v3.oas.annotations.media.Schema
 import org.springframework.web.bind.annotation.ModelAttribute
+import org.springframework.web.bind.annotation.PathVariable
 import org.springframework.web.bind.annotation.RequestBody
 import site.billilge.api.backend.domain.member.dto.request.AdminRequest
+import site.billilge.api.backend.domain.member.dto.request.AdminRoleUpdateRequest
+import site.billilge.api.backend.global.exception.ErrorResponse
 import site.billilge.api.backend.domain.member.dto.response.AdminFindAllResponse
 import site.billilge.api.backend.domain.member.dto.response.MemberFindAllResponse
 import site.billilge.api.backend.global.dto.PageableCondition
@@ -49,6 +54,28 @@ interface AdminMemberApi {
         @ModelAttribute searchCondition: SearchCondition
     ): ResponseEntity<AdminFindAllResponse>
 
+    @Operation(
+        summary = "관리자 역할 변경",
+        description = "관리자의 역할을 변경하는 API"
+    )
+    @ApiResponses(
+        value = [
+            ApiResponse(
+                responseCode = "200",
+                description = "관리자 역할 변경 성공"
+            ),
+            ApiResponse(
+                responseCode = "404",
+                description = "회원을 찾을 수 없습니다.",
+                content = [Content(schema = Schema(implementation = ErrorResponse::class))]
+            )
+        ]
+    )
+    fun updateAdminRole(
+        @PathVariable memberId: Long,
+        @RequestBody request: AdminRoleUpdateRequest
+    ): ResponseEntity<Void>
+
     @Operation(
         summary = "관리자 추가",
         description = "회원을 관리자에 추가하는 API"

src/main/kotlin/site/billilge/api/backend/domain/member/controller/AdminMemberController.kt

@@ -3,6 +3,7 @@ package site.billilge.api.backend.domain.member.controller
 import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.*
 import site.billilge.api.backend.domain.member.dto.request.AdminRequest
+import site.billilge.api.backend.domain.member.dto.request.AdminRoleUpdateRequest
 import site.billilge.api.backend.domain.member.dto.response.AdminFindAllResponse
 import site.billilge.api.backend.domain.member.dto.response.MemberFindAllResponse
 import site.billilge.api.backend.domain.member.facade.AdminMemberFacade
@@ -33,6 +34,16 @@ class AdminMemberController(
         return ResponseEntity.ok(adminMemberFacade.getAdminList(pageableCondition, searchCondition))
     }
 
+    @OnlyAdmin
+    @PatchMapping("/{memberId}/admins")
+    override fun updateAdminRole(
+        @PathVariable memberId: Long,
+        @RequestBody request: AdminRoleUpdateRequest
+    ): ResponseEntity<Void> {
+        adminMemberFacade.updateAdminRole(memberId, request)
+        return ResponseEntity.ok().build()
+    }
+
     @OnlyAdmin
     @PostMapping("/admins")
     override fun addAdmins(@RequestBody request: AdminRequest): ResponseEntity<Void> {

src/main/kotlin/site/billilge/api/backend/domain/member/dto/request/AdminRoleUpdateRequest.kt

@@ -0,0 +1,10 @@
+package site.billilge.api.backend.domain.member.dto.request
+
+import io.swagger.v3.oas.annotations.media.Schema
+import site.billilge.api.backend.domain.member.enums.Role
+
+@Schema
+data class AdminRoleUpdateRequest(
+    @field:Schema(description = "변경할 역할", example = "GA")
+    val role: Role,
+)

src/main/kotlin/site/billilge/api/backend/domain/member/facade/AdminMemberFacade.kt

@@ -2,6 +2,7 @@ package site.billilge.api.backend.domain.member.facade
 
 import org.springframework.stereotype.Component
 import site.billilge.api.backend.domain.member.dto.request.AdminRequest
+import site.billilge.api.backend.domain.member.dto.request.AdminRoleUpdateRequest
 import site.billilge.api.backend.domain.member.dto.response.AdminFindAllResponse
 import site.billilge.api.backend.domain.member.dto.response.AdminMemberDetail
 import site.billilge.api.backend.domain.member.dto.response.MemberDetail
@@ -26,6 +27,10 @@ class AdminMemberFacade(
         return AdminFindAllResponse(adminDetails, adminList.totalPages)
     }
 
+    fun updateAdminRole(memberId: Long, request: AdminRoleUpdateRequest) {
+        memberService.updateAdminRole(memberId, request.role)
+    }
+
     fun addAdmins(request: AdminRequest) {
         memberService.addAdmins(request.memberIds, request.role)
     }

src/main/kotlin/site/billilge/api/backend/domain/member/service/MemberService.kt

@@ -68,6 +68,14 @@ class MemberService(
         return memberRepository.findAllByRoleAndNameContaining(Role.ADMIN, searchCondition.search, pageRequest)
     }
 
+    @Transactional
+    fun updateAdminRole(memberId: Long, role: Role) {
+        val member = memberRepository.findByIdOrNull(memberId)
+            ?: throw ApiException(MemberErrorCode.MEMBER_NOT_FOUND)
+
+        member.updateRole(role)
+    }
+
     @Transactional
     fun addAdmins(memberIds: List<Long>, role: Role) {
         memberRepository.findAllByIds(memberIds)