fix channel sort number when reordering channels (#2700)

* fix channel sort number when reordering channels

* tryparse

CHANGELOG.md

@@ -40,6 +40,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   - Fix loading requested number of epg entries for motion graphics elements
 - Fix bug with mirror channels where seemingly random content would be played every ~40 seconds
 - Fix chronological sorting for Other Videos that have release date metadata
+- Fix playout sorting after using channel number editor
+  - If your playouts are sorted incorrectly, use the channel number editor to fix (swap two channels, then swap them back)
 
 ### Changed
 - No longer round framerate to nearest integer when normalizing framerate

ErsatzTV.Application/Channels/Commands/UpdateChannelNumbersHandler.cs

@@ -1,3 +1,4 @@
+using System.Globalization;
 using System.Threading.Channels;
 using ErsatzTV.Core;
 using ErsatzTV.Infrastructure.Data;
@@ -38,6 +39,14 @@ public class UpdateChannelNumbersHandler(
             foreach (var channel in channelsToUpdate)
             {
                 channel.Number = numberUpdates[channel.Id];
+                if (double.TryParse(channel.Number, CultureInfo.InvariantCulture, out double sortNumber))
+                {
+                    channel.SortNumber = sortNumber;
+                }
+                else
+                {
+                    return BaseError.New($"Failed to parse channel number {channel.Number}");
+                }
             }
 
             // save those changes