fix message edit embed, ignore pk;edit triggers

Catalogger.Backend/Bot/DiscordUtils.cs

@@ -1,9 +1,13 @@
 using System.Drawing;
+using Remora.Discord.API;
+using Remora.Rest.Core;
 
 namespace Catalogger.Backend.Bot;
 
 public static class DiscordUtils
 {
+    public static readonly Snowflake PkUserId = DiscordSnowflake.New(466378653216014359);
+    
     public static readonly Color Red = Color.FromArgb(231, 76, 60);
     public static readonly Color Purple = Color.FromArgb(155, 89, 182);
 }

Catalogger.Backend/Bot/Responders/MessageCreateResponder.cs

@@ -26,7 +26,6 @@ public class MessageCreateResponder(
     : IResponder<IMessageCreate>
 {
     private readonly ILogger _logger = logger.ForContext<MessageCreateResponder>();
-    private static readonly Snowflake PkUserId = DiscordSnowflake.New(466378653216014359);
 
     public async Task<Result> RespondAsync(IMessageCreate msg, CancellationToken ct = default)
     {
@@ -50,11 +49,11 @@ public class MessageCreateResponder(
             return Result.Success;
         }
 
-        if (msg.Author.ID == PkUserId)
+        if (msg.Author.ID == DiscordUtils.PkUserId)
             _ = pkMessageHandler.HandlePkMessageAsync(msg);
-        if (msg.ApplicationID.IsDefined(out var appId) && appId == PkUserId)
+        if (msg.ApplicationID.Is(DiscordUtils.PkUserId))
             _ = pkMessageHandler.HandleProxiedMessageAsync(msg.ID.Value);
-        else if (msg.ApplicationID.HasValue && appId == config.Discord.ApplicationId)
+        else if (msg.ApplicationID.HasValue && msg.ApplicationID.Is(config.Discord.ApplicationId))
         {
             db.IgnoredMessages.Add(new IgnoredMessage(msg.ID.Value));
             await db.SaveChangesAsync(ct);

Catalogger.Backend/Bot/Responders/MessageDeleteResponder.cs

@@ -4,6 +4,7 @@ using Catalogger.Backend.Database.Queries;
 using Catalogger.Backend.Extensions;
 using Catalogger.Backend.Services;
 using Humanizer;
+using Microsoft.VisualBasic;
 using NodaTime;
 using Remora.Discord.API;
 using Remora.Discord.API.Abstractions.Gateway.Events;
@@ -11,6 +12,7 @@ using Remora.Discord.API.Abstractions.Objects;
 using Remora.Discord.API.Objects;
 using Remora.Discord.Extensions.Embeds;
 using Remora.Discord.Gateway.Responders;
+using Remora.Rest.Core;
 using Remora.Results;
 
 namespace Catalogger.Backend.Bot.Responders;
@@ -22,15 +24,18 @@ public class MessageDeleteResponder(
     WebhookExecutorService webhookExecutor,
     ChannelCacheService channelCache,
     UserCacheService userCache,
-    IClock clock) : IResponder<IMessageDelete>
+    IClock clock,
+    PluralkitApiService pluralkitApi) : IResponder<IMessageDelete>
 {
     private readonly ILogger _logger = logger.ForContext<MessageDeleteResponder>();
 
+    private static bool MaybePkProxyTrigger(Snowflake id) => id.Timestamp > DateTimeOffset.Now - 1.Minutes();
+
     public async Task<Result> RespondAsync(IMessageDelete ev, CancellationToken ct = default)
     {
         if (!ev.GuildID.IsDefined()) return Result.Success;
 
-        if (ev.ID.Timestamp < DateTimeOffset.Now - 1.Minutes())
+        if (MaybePkProxyTrigger(ev.ID))
         {
             _logger.Debug(
                 "Deleted message {MessageId} is less than 1 minute old, delaying 5 seconds to give PK time to catch up",
@@ -59,6 +64,20 @@ public class MessageDeleteResponder(
             return Result.Success;
         }
 
+        // Check if the message is an edit trigger message.
+        // If it is, the API will return a valid message for its ID, but the ID won't match either `Id` or `Original`.
+        // (We also won't have any system/member information stored for it)
+        if (msg is { System: null, Member: null } && MaybePkProxyTrigger(ev.ID) && false)
+        {
+            // TODO: remove the "false" if/when the API is updated to actually return this :neofox_woozy:
+            var pkMsg = await pluralkitApi.GetPluralKitMessageAsync(ev.ID.Value, ct);
+            if (pkMsg != null && pkMsg.Id != ev.ID.Value && pkMsg.Original != ev.ID.Value)
+            {
+                _logger.Debug("Deleted message {MessageId} is a `pk;edit` message, ignoring", ev.ID);
+                return Result.Success;
+            }
+        }
+
         logChannel = webhookExecutor.GetLogChannel(guild, LogChannelType.MessageDelete, ev.ChannelID, msg.UserId);
         if (logChannel == null) return Result.Success;
 

Catalogger.Backend/Bot/Responders/MessageUpdateResponder.cs

@@ -20,7 +20,8 @@ public class MessageUpdateResponder(
     ChannelCacheService channelCache,
     UserCacheService userCache,
     MessageRepository messageRepository,
-    WebhookExecutorService webhookExecutor) : IResponder<IMessageUpdate>
+    WebhookExecutorService webhookExecutor,
+    PluralkitApiService pluralkitApi) : IResponder<IMessageUpdate>
 {
     private readonly ILogger _logger = logger.ForContext<MessageUpdateResponder>();
 
@@ -76,8 +77,7 @@ public class MessageUpdateResponder(
                 .WithFooter($"ID: {msg.ID}")
                 .WithTimestamp(msg.ID.Timestamp);
 
-            var fields = Enumerable.Range(0, msg.Content.Length / 1000)
+            var fields = ChunksUpTo(msg.Content, 1000)
-                .Select(i => msg.Content.Substring(i * 1000, 1000))
                 .Select<string, IEmbedField>((s, i) =>
                     new EmbedField($"New content{(i != 0 ? " (cont.)" : "")}", s, false))
                 .ToList();
@@ -110,7 +110,16 @@ public class MessageUpdateResponder(
         }
         finally
         {
-            await messageRepository.UpdateMessageAsync(msg, ct);
+            if (!await messageRepository.UpdateMessageAsync(msg, ct) && msg.ApplicationID.Is(DiscordUtils.PkUserId))
+            {
+                _logger.Debug(
+                    "Message {MessageId} wasn't stored yet and was proxied by PluralKit, fetching proxy information from its API",
+                    msg.ID);
+                var pkMsg = await pluralkitApi.GetPluralKitMessageAsync(msg.ID.Value, ct);
+                if (pkMsg != null)
+                    await messageRepository.SetProxiedMessageDataAsync(msg.ID.Value, pkMsg.Original, pkMsg.Sender,
+                        pkMsg.System?.Id, pkMsg.Member?.Id);
+            }
         }
     }
 
@@ -122,4 +131,10 @@ public class MessageUpdateResponder(
         evt.WebhookID, evt.Type.GetOrThrow(), evt.Activity, evt.Application, evt.ApplicationID, evt.MessageReference,
         evt.Flags, evt.ReferencedMessage, evt.Interaction, evt.Thread, evt.Components, evt.StickerItems, evt.Position,
         evt.Resolved, evt.InteractionMetadata, evt.Poll);
+
+    private static IEnumerable<string> ChunksUpTo(string str, int maxChunkSize)
+    {
+        for (var i = 0; i < str.Length; i += maxChunkSize)
+            yield return str.Substring(i, Math.Min(maxChunkSize, str.Length - i));
+    }
 }

Catalogger.Backend/Database/Queries/MessageRepository.cs

@@ -36,7 +36,12 @@ public class MessageRepository(ILogger logger, DatabaseContext db, IEncryptionSe
         await db.SaveChangesAsync(ct);
     }
 
-    public async Task UpdateMessageAsync(IMessageCreate msg, CancellationToken ct = default)
+    /// <summary>
+    /// Updates an edited message.
+    /// </summary>
+    /// <returns>true if the message was already stored and got updated,
+    /// false if the message wasn't stored and was newly inserted.</returns>
+    public async Task<bool> UpdateMessageAsync(IMessageCreate msg, CancellationToken ct = default)
     {
         _logger.Debug("Updating message {MessageId}", msg.ID);
 
@@ -44,7 +49,10 @@ public class MessageRepository(ILogger logger, DatabaseContext db, IEncryptionSe
         var (isStored, _) = await HasProxyInfoAsync(msg.ID.Value);
         if (!isStored)
         {
+            _logger.Debug("Edited message {MessageId} is not stored yet, storing it", msg.ID);
             await SaveMessageAsync(msg, ct);
+            await tx.CommitAsync(ct);
+            return false;
         }
         else
         {
@@ -62,9 +70,9 @@ public class MessageRepository(ILogger logger, DatabaseContext db, IEncryptionSe
 
             db.Update(dbMsg);
             await db.SaveChangesAsync(ct);
-        }
-
             await tx.CommitAsync(ct);
+            return true;
+        }
     }
 
     public async Task<Message?> GetMessageAsync(ulong id, CancellationToken ct = default)

Catalogger.Backend/Extensions/DiscordExtensions.cs

@@ -44,6 +44,9 @@ public static class DiscordExtensions
         return snowflake.Value.Value;
     }
 
+    public static bool Is(this Optional<Snowflake> s1, Snowflake s2) => s1.IsDefined(out var value) && value == s2;
+    public static bool Is(this Optional<Snowflake> s1, ulong s2) => s1.IsDefined(out var value) && value == s2;
+
     public static T GetOrThrow<T>(this Result<T> result)
     {
         if (result.Error != null) throw new DiscordRestException(result.Error.Message);