EpisodeFileOrganizer: Improve error handling (alternate approach)

Previously some methods were just returning null or empty values in case
of encountered errors; as a consequence, the actual reason for failure
was never written to the auto-organize log.
Instead, only a generic message like "Unable to sort xxx because target
path could not be determined." was displayed.

After this change, the actual reason for failure will be saved to the
auto-organize log or displayed in the UI (when completing the organize
dialog).

This information is very important for the user. Examples are "No
permission", "Target folder not available", "Disk full", etc..

MediaBrowser.Server.Implementations/FileOrganization/EpisodeFileOrganizer.cs

@@ -43,13 +43,6 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
             _providerManager = providerManager;
         }
 
-        public Task<FileOrganizationResult> OrganizeEpisodeFile(string path, CancellationToken cancellationToken)
-        {
-            var options = _config.GetAutoOrganizeOptions();
-
-            return OrganizeEpisodeFile(path, options, false, cancellationToken);
-        }
-
         public async Task<FileOrganizationResult> OrganizeEpisodeFile(string path, AutoOrganizeOptions options, bool overwriteExisting, CancellationToken cancellationToken)
         {
             _logger.Info("Sorting file {0}", path);
@@ -63,6 +56,8 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
                 FileSize = new FileInfo(path).Length
             };
 
+            try
+            { 
             if (_libraryMonitor.IsPathLocked(path))
             {
                 result.Status = FileSortingStatus.Failure;
@@ -148,6 +143,12 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
             }
 
             await _organizationService.SaveResult(result, CancellationToken.None).ConfigureAwait(false);
+            }
+            catch (Exception ex)
+            {
+                result.Status = FileSortingStatus.Failure;
+                result.StatusMessage = ex.Message;
+            }
 
             return result;
         }
@@ -156,6 +157,8 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
         {
             var result = _organizationService.GetResult(request.ResultId);
 
+            try
+            { 
             Series series = null;
 
             if (request.NewSeriesProviderIds.Count > 0)
@@ -207,6 +210,12 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
                 cancellationToken).ConfigureAwait(false);
 
             await _organizationService.SaveResult(result, CancellationToken.None).ConfigureAwait(false);
+            }
+            catch (Exception ex)
+            {
+                result.Status = FileSortingStatus.Failure;
+                result.StatusMessage = ex.Message;
+            }
 
             return result;
         }
@@ -263,16 +272,15 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
 
             var originalExtractedSeriesString = result.ExtractedName;
 
+            try
+            {
             // Proceed to sort the file
             var newPath = await GetNewPath(sourcePath, series, seasonNumber, episodeNumber, endingEpiosdeNumber, premiereDate, options.TvOptions, cancellationToken).ConfigureAwait(false);
 
             if (string.IsNullOrEmpty(newPath))
             {
                 var msg = string.Format("Unable to sort {0} because target path could not be determined.", sourcePath);
-                result.Status = FileSortingStatus.Failure;
-                result.StatusMessage = msg;
-                _logger.Warn(msg);
-                return;
+                throw new Exception(msg);
             }
 
             _logger.Info("Sorting file {0} to new path {1}", sourcePath, newPath);
@@ -347,6 +355,14 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
                     }
                 }
             }
+            }
+            catch (Exception ex)
+            {
+                result.Status = FileSortingStatus.Failure;
+                result.StatusMessage = ex.Message;
+                _logger.Warn(ex.Message);
+                return;
+            }
 
             if (rememberCorrection)
             {
@@ -505,7 +521,7 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
             }
             catch (Exception ex)
             {
-                var errorMsg = string.Format("Failed to move file from {0} to {1}", result.OriginalPath, result.TargetPath);
+                var errorMsg = string.Format("Failed to move file from {0} to {1}: {2}", result.OriginalPath, result.TargetPath, ex.Message);
 
                 result.Status = FileSortingStatus.Failure;
                 result.StatusMessage = errorMsg;
@@ -616,7 +632,7 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
             {
                 var msg = string.Format("No provider metadata found for {0} season {1} episode {2}", series.Name, seasonNumber, episodeNumber);
                 _logger.Warn(msg);
-                return null;
+                throw new Exception(msg);
             }
 
             var episodeName = episode.Name;
@@ -715,6 +731,11 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
 
             var pattern = endingEpisodeNumber.HasValue ? options.MultiEpisodeNamePattern : options.EpisodeNamePattern;
 
+            if (string.IsNullOrWhiteSpace(pattern))
+            {
+                throw new Exception("GetEpisodeFileName: Configured episode name pattern is empty!");
+            }
+
             var result = pattern.Replace("%sn", seriesName)
                 .Replace("%s.n", seriesName.Replace(" ", "."))
                 .Replace("%s_n", seriesName.Replace(" ", "_"))
@@ -759,8 +780,7 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
                 // There may be cases where reducing the title length may still not be sufficient to
                 // stay below maxLength
                 var msg = string.Format("Unable to generate an episode file name shorter than {0} characters to constrain to the max path limit", maxLength);
-                _logger.Warn(msg);
-                return string.Empty;
+                throw new Exception(msg);
             }
 
             return result;

MediaBrowser.Server.Implementations/FileOrganization/FileOrganizationService.cs

@@ -112,8 +112,13 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
             var organizer = new EpisodeFileOrganizer(this, _config, _fileSystem, _logger, _libraryManager,
                 _libraryMonitor, _providerManager);
 
-            await organizer.OrganizeEpisodeFile(result.OriginalPath, GetAutoOrganizeOptions(), true, CancellationToken.None)
+            var organizeResult = await organizer.OrganizeEpisodeFile(result.OriginalPath, GetAutoOrganizeOptions(), true, CancellationToken.None)
                     .ConfigureAwait(false);
+
+            if (organizeResult.Status != FileSortingStatus.Success)
+            {
+                throw new Exception(result.StatusMessage);
+            }
         }
 
         public Task ClearLog()
@@ -126,7 +131,12 @@ namespace MediaBrowser.Server.Implementations.FileOrganization
             var organizer = new EpisodeFileOrganizer(this, _config, _fileSystem, _logger, _libraryManager,
                 _libraryMonitor, _providerManager);
 
-            await organizer.OrganizeWithCorrection(request, GetAutoOrganizeOptions(), CancellationToken.None).ConfigureAwait(false);
+            var result = await organizer.OrganizeWithCorrection(request, GetAutoOrganizeOptions(), CancellationToken.None).ConfigureAwait(false);
+
+            if (result.Status != FileSortingStatus.Success)
+            {
+                throw new Exception(result.StatusMessage);
+            }
         }
 
         public QueryResult<SmartMatchInfo> GetSmartMatchInfos(FileOrganizationResultQuery query)

MediaBrowser.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs

@@ -1139,7 +1139,7 @@ namespace MediaBrowser.Server.Implementations.LiveTv.EmbyTV
 
                         var organize = new EpisodeFileOrganizer(_organizationService, _config, _fileSystem, _logger, _libraryManager, _libraryMonitor, _providerManager);
 
-                        var result = await organize.OrganizeEpisodeFile(path, CancellationToken.None).ConfigureAwait(false);
+                        var result = await organize.OrganizeEpisodeFile(path, _config.GetAutoOrganizeOptions(), false, CancellationToken.None).ConfigureAwait(false);
                     }
                     catch (Exception ex)
                     {