improve sync batching; added playback types

AZKiServer/Services/AZKiRpcService.cs

@@ -18,4 +18,29 @@ public class AZKiRpcService(MediaService mediaService) : RPC.AZKi.AZKiBase
 		result.Entries.AddRange(items.Select(e => e.ToRpc()));
 		return result;
 	}
+
+	public override async Task<PlaybackInfo> GetMediaPlayback(MediaPlaybackRequest request, ServerCallContext context)
+	{
+		var from = request.Date.ToDateTime().Date;
+		var to = request.Date.ToDateTime().Date.AddDays(1);
+		var items = await mediaService.GetEntriesInRangeAsync(Models.MediaType.All, from, to);
+		var channels = items.GroupBy(i => i.CameraId).Select(c =>
+		{
+			var images = c.Where(m => m.Type == Models.MediaType.Image).Select(m => m.ToRpc());
+			var videos = c.Where(m => m.Type == Models.MediaType.Video).Select(m => m.ToRpc());
+			var result = new MediaChannel
+			{
+				CameraId = c.Key,
+			};
+			result.Images.AddRange(images);
+			result.Videos.AddRange(videos);
+			return result;
+		});
+		var playback = new PlaybackInfo
+		{
+			Date = Google.Protobuf.WellKnownTypes.Timestamp.FromDateTime(from),
+		};
+		playback.Channels.AddRange(channels);
+		return playback;
+	}
 }