New: Add download client name to pending items waiting for a specific client

(cherry picked from commit 3cd4c67ba12cd5e8cc00d3df8929555fc0ad5918)

Closes #4504

src/NzbDrone.Core/Download/Pending/PendingReleaseService.cs

@@ -46,6 +46,8 @@ namespace NzbDrone.Core.Download.Pending
         private readonly IConfigService _configService;
         private readonly ICustomFormatCalculationService _formatCalculator;
         private readonly IRemoteAlbumAggregationService _aggregationService;
+        private readonly IDownloadClientFactory _downloadClientFactory;
+        private readonly IIndexerFactory _indexerFactory;
         private readonly IEventAggregator _eventAggregator;
         private readonly Logger _logger;
 
@@ -58,6 +60,8 @@ namespace NzbDrone.Core.Download.Pending
                                     IConfigService configService,
                                     ICustomFormatCalculationService formatCalculator,
                                     IRemoteAlbumAggregationService aggregationService,
+                                    IDownloadClientFactory downloadClientFactory,
+                                    IIndexerFactory indexerFactory,
                                     IEventAggregator eventAggregator,
                                     Logger logger)
         {
@@ -70,6 +74,8 @@ namespace NzbDrone.Core.Download.Pending
             _configService = configService;
             _formatCalculator = formatCalculator;
             _aggregationService = aggregationService;
+            _downloadClientFactory = downloadClientFactory;
+            _indexerFactory = indexerFactory;
             _eventAggregator = eventAggregator;
             _logger = logger;
         }
@@ -107,9 +113,16 @@ namespace NzbDrone.Core.Download.Pending
 
                         if (matchingReport.Reason != reason)
                         {
-                            _logger.Debug("The release {0} is already pending with reason {1}, changing to {2}", decision.RemoteAlbum, matchingReport.Reason, reason);
-                            matchingReport.Reason = reason;
-                            _repository.Update(matchingReport);
+                            if (matchingReport.Reason == PendingReleaseReason.DownloadClientUnavailable)
+                            {
+                                _logger.Debug("The release {0} is already pending with reason {1}, not changing reason", decision.RemoteAlbum, matchingReport.Reason);
+                            }
+                            else
+                            {
+                                _logger.Debug("The release {0} is already pending with reason {1}, changing to {2}", decision.RemoteAlbum, matchingReport.Reason, reason);
+                                matchingReport.Reason = reason;
+                                _repository.Update(matchingReport);
+                            }
                         }
                         else
                         {
@@ -190,6 +203,16 @@ namespace NzbDrone.Core.Download.Pending
                         timeleft = TimeSpan.Zero;
                     }
 
+                    string downloadClientName = null;
+                    var indexer = _indexerFactory.Find(pendingRelease.Release.IndexerId);
+
+                    if (indexer is { DownloadClientId: > 0 })
+                    {
+                        var downloadClient = _downloadClientFactory.Find(indexer.DownloadClientId);
+
+                        downloadClientName = downloadClient?.Name;
+                    }
+
                     var queue = new Queue.Queue
                     {
                         Id = GetQueueId(pendingRelease, album),
@@ -205,7 +228,8 @@ namespace NzbDrone.Core.Download.Pending
                         Added = pendingRelease.Added,
                         Status = pendingRelease.Reason.ToString(),
                         Protocol = pendingRelease.RemoteAlbum.Release.DownloadProtocol,
-                        Indexer = pendingRelease.RemoteAlbum.Release.Indexer
+                        Indexer = pendingRelease.RemoteAlbum.Release.Indexer,
+                        DownloadClient = downloadClientName
                     };
 
                     queued.Add(queue);