put a few checks from sync methods into a single method

Author: loanstone

FolderSync/SyncLogic.cs

@@ -12,15 +12,7 @@ public SyncLogic(Config config)
 
         public void RunInitialSync()
         {
-            if(!Directory.Exists(Config.SourceFolder))
-                throw new DirectoryNotFoundException($"Source folder '{Config.SourceFolder}' no longer exists");
-            if(!Directory.Exists(Config.BackupFolder))
-                throw new DirectoryNotFoundException($"Backup folder '{Config.BackupFolder}' no longer exists");
-            if (!Directory.Exists(Directory.GetParent(Config.LogFilePath).ToString()))
-                throw new DirectoryNotFoundException($"Log file path '{Config.LogFilePath}' no longer exists");
-            if(!File.Exists(Config.LogFilePath))
-                throw new FileNotFoundException($"Log file '{Config.LogFilePath}' no longer exists");
-            
+            CheckExistingDirs();
             CheckForMissingDirs();
             CheckForDeletedFiles();
             CheckForDeletedDirs();
@@ -32,14 +24,7 @@ public void RunSyncLoop()
         {
             while (true)
             {
-                if(!Directory.Exists(Config.SourceFolder))
-                    throw new DirectoryNotFoundException($"Source folder '{Config.SourceFolder}' no longer exists");
-                if(!Directory.Exists(Config.BackupFolder))
-                    throw new DirectoryNotFoundException($"Backup folder '{Config.BackupFolder}' no longer exists");
-                if (!Directory.Exists(Directory.GetParent(Config.LogFilePath).ToString()))
-                    throw new DirectoryNotFoundException($"Log file path '{Config.LogFilePath}' no longer exists");
-                if(!File.Exists(Config.LogFilePath))
-                    throw new FileNotFoundException($"Log file '{Config.LogFilePath}' no longer exists");
+                CheckExistingDirs();
                 CheckForMissingDirs();
                 CheckForModifiedFiles();
                 CheckForCopiesInSource();
@@ -50,6 +35,18 @@ public void RunSyncLoop()
                 Thread.Sleep(Config.SyncPeriod * 60000);
             }
         }
+        
+        private void CheckExistingDirs()
+        {
+            if (!Directory.Exists(Config.SourceFolder))
+                throw new DirectoryNotFoundException($"Source folder '{Config.SourceFolder}' no longer exists");
+            if (!Directory.Exists(Config.BackupFolder))
+                throw new DirectoryNotFoundException($"Backup folder '{Config.BackupFolder}' no longer exists");
+            if (!Directory.Exists(Directory.GetParent(Config.LogFilePath).ToString()))
+                throw new DirectoryNotFoundException($"Log file path '{Config.LogFilePath}' no longer exists");
+            if (!File.Exists(Config.LogFilePath))
+                throw new FileNotFoundException($"Log file '{Config.LogFilePath}' no longer exists");
+        }
 
         private void WriteLogs()
         {