feat: slightly more debug logs, enrich message events with extra data

Catalogger.Backend/Extensions/LogUtils.cs

@@ -0,0 +1,58 @@
+using Remora.Discord.API.Abstractions.Gateway.Events;
+using Remora.Rest.Core;
+using Serilog.Context;
+
+namespace Catalogger.Backend.Extensions;
+
+public static class LogUtils
+{
+    public static IDisposable Enrich<T>(T evt)
+        where T : IGatewayEvent
+    {
+        var type = ("Event", typeof(T).Name);
+
+        return evt switch
+        {
+            IMessageDelete md => PushProperties(
+                type,
+                ("GuildId", md.GuildID),
+                ("ChannelId", md.ChannelID),
+                ("MessageId", md.ID)
+            ),
+            IMessageUpdate mc => PushProperties(
+                type,
+                ("GuildId", mc.GuildID),
+                ("ChannelId", mc.ChannelID),
+                ("MessageId", mc.ID)
+            ),
+            IMessageDeleteBulk mdb => PushProperties(
+                type,
+                ("GuildId", mdb.GuildID),
+                ("ChannelId", mdb.ChannelID),
+                ("MessageIds", mdb.IDs)
+            ),
+            _ => PushProperties(type),
+        };
+    }
+
+    public static IDisposable PushProperties(params (string, object?)[] properties) =>
+        new MultiDisposable(
+            properties
+                .Select(p =>
+                {
+                    if (p.Item2 is Optional<Snowflake> s)
+                        return LogContext.PushProperty(p.Item1, s.IsDefined() ? s.Value : null);
+                    return LogContext.PushProperty(p.Item1, p.Item2);
+                })
+                .ToArray()
+        );
+
+    private record MultiDisposable(IDisposable[] Entries) : IDisposable
+    {
+        public void Dispose()
+        {
+            foreach (var e in Entries)
+                e.Dispose();
+        }
+    }
+}