Removed premove and instead check for source file being in use

NzbDrone.Core/MediaFiles/EpisodeImport/Specifications/NotInUseSpecification.cs

@@ -0,0 +1,40 @@
+using System.IO;
+using System.Linq;
+using NLog;
+using NzbDrone.Common;
+using NzbDrone.Core.Parser.Model;
+using NzbDrone.Core.Tv;
+
+namespace NzbDrone.Core.MediaFiles.EpisodeImport.Specifications
+{
+    public class NotInUseSpecification : IImportDecisionEngineSpecification
+    {
+        private readonly IDiskProvider _diskProvider;
+        private readonly Logger _logger;
+
+        public NotInUseSpecification(IDiskProvider diskProvider, Logger logger)
+        {
+            _diskProvider = diskProvider;
+            _logger = logger;
+        }
+
+        public string RejectionReason { get { return "File is in use"; } }
+
+        public bool IsSatisfiedBy(LocalEpisode localEpisode)
+        {
+            if (_diskProvider.IsParent(localEpisode.Series.Path, localEpisode.Path))
+            {
+                _logger.Trace("{0} is in series folder, skipping in use check", localEpisode.Path);
+                return true;
+            }
+
+            if (_diskProvider.IsFileLocked(new FileInfo(localEpisode.Path)))
+            {
+                _logger.Trace("{0} is in use");
+                return false;
+            }
+
+            return true;
+        }
+    }
+}