feat: 특정 일정의 특정 이미지를 삭제하는 비즈니스 코드 구현

backend/src/main/java/com/isp/backend/domain/scheduleImage/service/DeleteScheduleImageService.java

@@ -0,0 +1,7 @@
+package com.isp.backend.domain.scheduleImage.service;
+
+import org.springframework.http.ResponseEntity;
+
+public interface DeleteScheduleImageService {
+    ResponseEntity<Void> delete(Long scheduleImageId);
+}

backend/src/main/java/com/isp/backend/domain/scheduleImage/service/ScheduleImageService.java

@@ -9,6 +9,8 @@
 import com.isp.backend.domain.scheduleImage.repository.ScheduleImageRepository;
 import com.isp.backend.domain.scheduleImage.repository.ScheduleImageS3Repository;
 import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -18,7 +20,7 @@
 
 @Service
 @RequiredArgsConstructor
-public class ScheduleImageService implements SaveScheduleImageService, ReadScheduleImageService {
+public class ScheduleImageService implements SaveScheduleImageService, ReadScheduleImageService, DeleteScheduleImageService {
 
 	private final ScheduleImageS3Repository scheduleImageS3Repository;
 	private final ScheduleRepository scheduleRepository;
@@ -45,4 +47,14 @@ public ReadScheduleImageResponse read(Long scheduleId) {
 
 		return new ReadScheduleImageResponse(scheduleId, pathSaveDateMap);
 	}
+
+	@Override
+	public ResponseEntity<Void> delete(Long scheduleImageId) {
+		if (!scheduleImageRepository.existsById(scheduleImageId)) {
+			return ResponseEntity.status(HttpStatus.NOT_FOUND).build();
+		}
+
+		scheduleImageRepository.deleteById(scheduleImageId);
+		return ResponseEntity.noContent().build();
+	}
 }