playout rework to maintain collection progress (#720)

* initial work on maintaining playout state

* debugging wip

* fix refresh playout logic

* fix failing test

* more fixes

* update changelog

* comment out some debug logs

* comment out more logs

ErsatzTV.Core/Scheduling/PlayoutModeSchedulerOne.cs

@@ -57,11 +57,6 @@ public class PlayoutModeSchedulerOne : PlayoutModeSchedulerBase<ProgramScheduleI
                 playoutItem,
                 itemChapters);
 
-            // only play one item from collection, so always advance to the next item
-            // _logger.LogDebug(
-            //     "Advancing to next schedule item after playout mode {PlayoutMode}",
-            //     "One");
-
             PlayoutBuilderState nextState = playoutBuilderState with
             {
                 CurrentTime = itemEndTimeWithFiller
@@ -72,6 +67,11 @@ public class PlayoutModeSchedulerOne : PlayoutModeSchedulerBase<ProgramScheduleI
 
             // LogScheduledItem(scheduleItem, mediaItem, itemStartTime);
 
+            // only play one item from collection, so always advance to the next item
+            // _logger.LogDebug(
+            //     "Advancing to next schedule item after playout mode {PlayoutMode}",
+            //     "One");
+
             DateTimeOffset nextItemStart = GetStartTimeAfter(nextState, nextScheduleItem);
 
             if (scheduleItem.TailFiller != null)
@@ -98,7 +98,7 @@ public class PlayoutModeSchedulerOne : PlayoutModeSchedulerBase<ProgramScheduleI
 
             return Tuple(nextState, playoutItems);
         }
-            
+
         return Tuple(playoutBuilderState, new List<PlayoutItem>());
     }
 }