fixes #579 - Year images not getting scanned

MediaBrowser.Server.Implementations/Library/Validators/YearsPostScanTask.cs

@@ -0,0 +1,59 @@
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Model.Logging;
+using System;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Server.Implementations.Library.Validators
+{
+    public class YearsPostScanTask : ILibraryPostScanTask
+    {
+        private readonly ILibraryManager _libraryManager;
+        private readonly ILogger _logger;
+
+        public YearsPostScanTask(ILibraryManager libraryManager, ILogger logger)
+        {
+            _libraryManager = libraryManager;
+            _logger = logger;
+        }
+
+        public async Task Run(IProgress<double> progress, CancellationToken cancellationToken)
+        {
+            var allYears = _libraryManager.RootFolder.RecursiveChildren
+                .Select(i => i.ProductionYear ?? -1)
+                .Where(i => i != -1)
+                .Distinct()
+                .ToList();
+
+            var count = allYears.Count;
+            var numComplete = 0;
+
+            foreach (var yearNumber in allYears)
+            {
+                var year = _libraryManager.GetYear(yearNumber);
+
+                try
+                {
+                    await year.RefreshMetadata(cancellationToken).ConfigureAwait(false);
+                }
+                catch (OperationCanceledException)
+                {
+                    // Don't clutter the log
+                    break;
+                }
+                catch (Exception ex)
+                {
+                    _logger.ErrorException("Error refreshing year {0}", ex, year);
+                }
+
+                numComplete++;
+                double percent = numComplete;
+                percent /= count;
+                percent *= 90;
+
+                progress.Report(percent + 10);
+            }
+        }
+    }
+}