add basic image library support (#1608)

* add basic image library support

* add image page

* update changelog

ErsatzTV.Core/Scheduling/BlockScheduling/BlockPlayoutBuilder.cs

@@ -75,6 +75,10 @@ public class BlockPlayoutBuilder(
         }
 
         DateTimeOffset currentTime = start;
+        if (updatedEffectiveBlocks.Count > 0)
+        {
+            currentTime = updatedEffectiveBlocks.Min(eb => eb.Start);
+        }
 
         foreach (EffectiveBlock effectiveBlock in updatedEffectiveBlocks)
         {
@@ -128,6 +132,8 @@ public class BlockPlayoutBuilder(
                     historyKey,
                     collectionMediaItems);
 
+                bool pastTime = false;
+
                 foreach (MediaItem mediaItem in enumerator.Current)
                 {
                     Logger.LogDebug(
@@ -171,6 +177,7 @@ public class BlockPlayoutBuilder(
                             effectiveBlock.Block.Name,
                             blockFinish);
 
+                        pastTime = true;
                         break;
                     }
 
@@ -194,6 +201,11 @@ public class BlockPlayoutBuilder(
                     currentTime += itemDuration;
                     enumerator.MoveNext();
                 }
+                
+                if (pastTime)
+                {
+                    break;
+                }
             }
         }
 
@@ -337,6 +349,11 @@ public class BlockPlayoutBuilder(
 
     private static TimeSpan DurationForMediaItem(MediaItem mediaItem)
     {
+        if (mediaItem is Image)
+        {
+            return TimeSpan.FromSeconds(Domain.Image.DefaultSeconds);
+        }
+
         MediaVersion version = mediaItem.GetHeadVersion();
         return version.Duration;
     }

ErsatzTV.Core/Scheduling/PlayoutBuilder.cs

@@ -300,8 +300,8 @@ public class PlayoutBuilder : IPlayoutBuilder
             return None;
         }
 
-        playout.Items ??= new List<PlayoutItem>();
-        playout.ProgramScheduleAnchors ??= new List<PlayoutProgramScheduleAnchor>();
+        playout.Items ??= [];
+        playout.ProgramScheduleAnchors ??= [];
 
         Option<int> daysToBuild = await _configElementRepository.GetValue<int>(ConfigElementKey.PlayoutDaysToBuild);
 
@@ -791,6 +791,7 @@ public class PlayoutBuilder : IPlayoutBuilder
                         .IfNoneAsync(TimeSpan.Zero) == TimeSpan.Zero,
                     Song s => await s.MediaVersions.Map(v => v.Duration).HeadOrNone()
                         .IfNoneAsync(TimeSpan.Zero) == TimeSpan.Zero,
+                    Image => false,
                     _ => true
                 };
 
@@ -1097,6 +1098,10 @@ public class PlayoutBuilder : IPlayoutBuilder
                 return s.SongMetadata.HeadOrNone().Match(
                     sm => sm.Title ?? string.Empty,
                     () => "[unknown song]");
+            case Image i:
+                return i.ImageMetadata.HeadOrNone().Match(
+                    sm => sm.Title ?? string.Empty,
+                    () => "[unknown song]");
             default:
                 return string.Empty;
         }

ErsatzTV.Core/Scheduling/PlayoutModeSchedulerBase.cs

@@ -179,6 +179,11 @@ public abstract class PlayoutModeSchedulerBase<T> : IPlayoutModeScheduler<T> whe
 
     protected static TimeSpan DurationForMediaItem(MediaItem mediaItem)
     {
+        if (mediaItem is Image)
+        {
+            return TimeSpan.FromSeconds(Domain.Image.DefaultSeconds);
+        }
+
         MediaVersion version = mediaItem.GetHeadVersion();
         return version.Duration;
     }