feat: 회원의 예약 페이지에서 본인의 정보(이름, 전화번호)를 조회할 때 사용할 별도의 DTO 및 로직 정의

src/main/kotlin/roomescape/member/business/UserService.kt

@@ -13,6 +13,7 @@ import roomescape.common.dto.UserLoginCredentials
 import roomescape.member.exception.UserErrorCode
 import roomescape.member.exception.UserException
 import roomescape.member.infrastructure.persistence.*
+import roomescape.member.web.UserContactRetrieveResponse
 import roomescape.member.web.UserCreateRequest
 import roomescape.member.web.UserCreateResponse
 import roomescape.member.web.toEntity
@@ -54,6 +55,18 @@ class UserService(
             }
     }
 
+    @Transactional(readOnly = true)
+    fun findContactById(id: Long) : UserContactRetrieveResponse {
+        log.info { "[UserService.findContactById] 회원 연락 정보 조회 시작: id=${id}" }
+
+        val user = findOrThrow(id)
+
+        return UserContactRetrieveResponse(user.id, user.name, user.phone)
+            .also {
+                log.info { "[UserService.findContactById] 회원 연락 정보 조회 완료: id=${id}, name=${it.name}" }
+            }
+    }
+
     @Transactional
     fun signup(request: UserCreateRequest): UserCreateResponse {
         log.info { "[UserService.signup] 회원가입 시작: request:$request" }

src/main/kotlin/roomescape/member/web/UserDTO.kt

@@ -41,3 +41,9 @@ data class UserCreateResponse(
     val id: Long,
     val name: String
 )
+
+data class UserContactRetrieveResponse(
+    val id: Long,
+    val name: String,
+    val phone: String
+)