Backup - essentially working

devdocs/todo.txt

@@ -13,7 +13,8 @@ todo: OPS routes (SERVER AND CLIENT)
 	- Backup, restore https://rockfish.ayanova.com/default.htm#!/rfcaseEdit/3369
 	- These need to be done fairly early on in order to have shit to play with for testing etc
 	
-
+todo: Test backup on Linux
+	- going to need to run in vm I think maybe
 
 todo: Search indexing performance improvement and exception avoidance (Search.cs 828)
 	ON CONFLICT IDEA

server/AyaNova/generator/CoreJobBackup.cs

@@ -81,7 +81,7 @@ namespace AyaNova.Biz
                 log.LogInformation("BACKUP STUB: ATTACHMENTS BACKUP RUNNING NOW");
 
                 //PRUNE BACKUP SETS NOT KEPT
-                log.LogInformation("BACKUP STUB: PRUNING RUNNING NOW");
+                FileUtil.BackupCleanUp(ServerGlobalOpsSettings.BackupSetsToKeep);
 
 
                 //v.next - COPY TO ONLINE STORAGE

server/AyaNova/util/FileUtil.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 using System.Threading.Tasks;
 using System.IO;
 using System.IO.Compression;
@@ -152,6 +153,29 @@ namespace AyaNova.Util
             }
         }
 
+
+
+        /// <summary>
+        /// Cleanup excess backups (backup folder file)        
+        /// </summary>
+        /// <param name="keepCount"></param>
+        internal static void BackupCleanUp(int keepCount)
+        {
+            if (keepCount < 1) keepCount = 1;
+            var BackupFileList = UtilityFileList("*.backup");
+
+            if (BackupFileList.Count > keepCount)
+            {
+                //sort, skip newest x (keepcount) delete the rest
+                var DeleteCount = BackupFileList.Count - keepCount;
+                var DeleteFileList = BackupFileList.OrderByDescending(m => m).Skip(keepCount).ToList();
+                foreach (string ExtraBackupFile in DeleteFileList)
+                {
+                    DeleteUtilityFile(ExtraBackupFile);
+                }
+            }
+        }
+
         #endregion Utility file handling
 
         #region Zip handling