fix channel sorting (#54)

ErsatzTV.Core/Iptv/ChannelGuide.cs

@@ -30,7 +30,7 @@ namespace ErsatzTV.Core.Iptv
             xml.WriteStartElement("tv");
             xml.WriteAttributeString("generator-info-name", "ersatztv");
 
-            foreach (Channel channel in _channels)
+            foreach (Channel channel in _channels.OrderBy(c => c.Number))
             {
                 xml.WriteStartElement("channel");
                 xml.WriteAttributeString("id", channel.Number);
@@ -53,7 +53,7 @@ namespace ErsatzTV.Core.Iptv
                 xml.WriteEndElement(); // channel
             }
 
-            foreach (Channel channel in _channels)
+            foreach (Channel channel in _channels.OrderBy(c => c.Number))
             {
                 foreach (PlayoutItem playoutItem in channel.Playouts.Collect(p => p.Items).OrderBy(i => i.Start))
                 {

ErsatzTV.Core/Iptv/ChannelPlaylist.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Text;
 using ErsatzTV.Core.Domain;
 using static LanguageExt.Prelude;
@@ -25,7 +26,7 @@ namespace ErsatzTV.Core.Iptv
 
             var xmltv = $"{_scheme}://{_host}/iptv/xmltv.xml";
             sb.AppendLine($"#EXTM3U url-tvg=\"{xmltv}\" x-tvg-url=\"{xmltv}\"");
-            foreach (Channel channel in _channels)
+            foreach (Channel channel in _channels.OrderBy(c => c.Number))
             {
                 string logo = Optional(channel.Artwork).Flatten()
                     .Filter(a => a.ArtworkKind == ArtworkKind.Logo)