Start parallel rewrite

ConfusedPolarBear.Plugin.IntroSkipper/ScheduledTasks/FingerprinterTask.cs

@@ -86,6 +86,20 @@ public class FingerprinterTask : IScheduledTask
         var totalProcessed = 0;
 
         foreach (var season in queue)
+        {
+            AnalyzeSeason(season, cancellationToken);
+
+            // TODO: report progress on a per episode basis
+            totalProcessed += season.Value.Count;
+            progress.Report((totalProcessed * 100) / Plugin.Instance!.TotalQueued);
+        }
+
+        return Task.CompletedTask;
+    }
+
+    private void AnalyzeSeason(
+        KeyValuePair<Guid, List<QueuedEpisode>> season,
+        CancellationToken cancellationToken)
     {
         var first = season.Value[0];
 
@@ -95,7 +109,7 @@ public class FingerprinterTask : IScheduledTask
          */
         if (season.Value.Count < 2 || first.SeasonNumber == 0)
         {
-                continue;
+            return;
         }
 
         _logger.LogInformation(
@@ -144,8 +158,11 @@ public class FingerprinterTask : IScheduledTask
                     lhs.EpisodeId,
                     rhs.EpisodeId);
 
+                /*
+                TODO: bring back
                 totalProcessed += 2;
                 progress.Report((totalProcessed * 100) / Plugin.Instance!.TotalQueued);
+                */
 
                 continue;
             }
@@ -173,30 +190,25 @@ public class FingerprinterTask : IScheduledTask
             }
             finally
             {
+                /*
+                TODO: bring back
                 totalProcessed += 2;
                 progress.Report((totalProcessed * 100) / Plugin.Instance!.TotalQueued);
+                */
             }
         }
 
         Plugin.Instance!.SaveTimestamps();
 
-            if (cancellationToken.IsCancellationRequested)
+        if (cancellationToken.IsCancellationRequested || !everFoundIntro)
         {
-                break;
+            return;
-            }
-
-            if (!everFoundIntro)
-            {
-                continue;
         }
 
         // Reanalyze this season to check for (and hopefully correct) outliers and failed episodes.
         CheckSeason(season.Value);
     }
 
-        return Task.CompletedTask;
-    }
-
     /// <summary>
     /// Analyze two episodes to find an introduction sequence shared between them.
     /// </summary>