fix #494: add delete impact confirmations

src/main/java/com/cloudhandson/vpdbackoffice/service/PermissionService.java

@@ -76,6 +76,22 @@ public class PermissionService {
 
   @Transactional
   public void deleteRole(long roleId) {
+    deleteRole(roleId, true);
+  }
+
+  @Transactional
+  public void deleteRole(long roleId, boolean confirmImpact) {
+    if (!confirmImpact) {
+      throw new AppException("역할 삭제 전 영향 확인이 필요합니다.");
+    }
+    int userRoleCount = permissionMapper.countUserRolesByRoleId(roleId);
+    int groupRoleCount = permissionMapper.countGroupRolesByRoleId(roleId);
+    int permissionCount = permissionMapper.countPermissionsByRoleId(roleId);
+    if (userRoleCount + groupRoleCount + permissionCount > 0) {
+      throw new AppException("연결된 사용자/그룹/권한이 있는 역할은 삭제할 수 없습니다. 사용자 역할 "
+          + userRoleCount + "건, 그룹 역할 " + groupRoleCount + "건, 권한 " + permissionCount
+          + "건을 먼저 해제하세요.");
+    }
     int deleted = permissionMapper.deleteRole(roleId);
     if (deleted == 0) {
       throw new AppException("삭제할 역할을 찾을 수 없습니다.");
@@ -133,6 +149,14 @@ public class PermissionService {
 
   @Transactional
   public void deletePermission(long permissionId) {
+    deletePermission(permissionId, true);
+  }
+
+  @Transactional
+  public void deletePermission(long permissionId, boolean confirmImpact) {
+    if (!confirmImpact) {
+      throw new AppException("권한 삭제 전 영향 확인이 필요합니다.");
+    }
     Long objectId = permissionMapper.findObjectIdByPermissionId(permissionId);
     permissionMapper.deleteRules(permissionId);
     permissionMapper.deleteVisibleColumns(permissionId);
@@ -147,6 +171,10 @@ public class PermissionService {
         "permissionId=" + permissionId));
   }
 
+  public int countPermissionsByObjectId(long objectId) {
+    return permissionMapper.countPermissionsByObjectId(objectId);
+  }
+
   private void validateRules(long objectId, List<RuleCommand> rules) {
     if (rules == null || rules.isEmpty()) {
       throw new AppException("행 규칙은 하나 이상 필요합니다.");