From 4c2d44ac246f308af3097aebd28c6d9a7b640bf3 Mon Sep 17 00:00:00 2001
From: Ivandro IG Jao <ivandrofly@gmail.com>
Date: Mon, 24 Aug 2020 22:37:38 +0100
Subject: [PATCH] optimize clean up auto-backup

---
 src/Forms/Main.cs | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/Forms/Main.cs b/src/Forms/Main.cs
index 2c5fee4e5..2b62783a8 100644
--- a/src/Forms/Main.cs
+++ b/src/Forms/Main.cs
@@ -128,6 +128,7 @@ namespace Nikse.SubtitleEdit.Forms
         private GoogleOrMicrosoftTranslate _googleOrMicrosoftTranslate;
 
         private bool _cancelWordSpellCheck = true;
+        private bool _cleanupHasRun = false;
 
         private bool _clearLastFind;
         private FindType _clearLastFindType = FindType.Normal;
@@ -20556,7 +20557,6 @@ namespace Nikse.SubtitleEdit.Forms
             CallPluginTranslateSelectedLines(sender);
         }
 
-
         private void CallPlugin(object sender, bool allowChangeFormat, bool translate)
         {
             try
@@ -20873,8 +20873,13 @@ namespace Nikse.SubtitleEdit.Forms
                         }
                     }
 
-                    // let the cleanup proccess be handled by a worker thread
-                    System.Threading.Tasks.Task.Factory.StartNew(() => { RestoreAutoBackup.CleanAutoBackupFolder(Configuration.AutoBackupDirectory, Configuration.Settings.General.AutoBackupDeleteAfterMonths); });
+                    // the clean up process can only happen minimum once per month. don't keep creating new threading
+                    if (!_cleanupHasRun)
+                    {
+                        // let the cleanup process be handled by worker thread
+                        System.Threading.Tasks.Task.Factory.StartNew(() => { RestoreAutoBackup.CleanAutoBackupFolder(Configuration.AutoBackupDirectory, Configuration.Settings.General.AutoBackupDeleteAfterMonths); });
+                        _cleanupHasRun = true;
+                    }
                 }
             }