wip: guild member remove

Catalogger.Backend/Bot/Responders/Guilds/GuildMemberRemoveResponder.cs

@@ -0,0 +1,49 @@
+using Catalogger.Backend.Cache;
+using Catalogger.Backend.Cache.InMemoryCache;
+using Catalogger.Backend.Database;
+using Catalogger.Backend.Extensions;
+using Catalogger.Backend.Services;
+using Remora.Discord.API.Abstractions.Gateway.Events;
+using Remora.Discord.API.Abstractions.Rest;
+using Remora.Discord.Extensions.Embeds;
+using Remora.Discord.Gateway.Responders;
+using Remora.Results;
+
+namespace Catalogger.Backend.Bot.Responders.Guilds;
+
+public class GuildMemberRemoveResponder(
+    ILogger logger,
+    DatabaseContext db,
+    IMemberCache memberCache,
+    UserCache userCache,
+    WebhookExecutorService webhookExecutor,
+    IDiscordRestGuildAPI guildApi) : IResponder<IGuildMemberRemove>
+{
+    private readonly ILogger _logger = logger.ForContext<GuildMemberAddResponder>();
+    
+    public async Task<Result> RespondAsync(IGuildMemberRemove evt, CancellationToken ct = default)
+    {
+        try
+        {
+            var embed = new EmbedBuilder()
+                .WithTitle("Member left")
+                .WithAuthor(evt.User.Tag(), iconUrl: evt.User.AvatarUrl())
+                .WithColour(DiscordUtils.Orange)
+                .WithDescription($"<@{evt.User.ID}>")
+                .WithFooter($"ID: {evt.User.ID}")
+                .WithCurrentTimestamp();
+            
+            var member = await memberCache.TryGetAsync(evt.GuildID, evt.User.ID);
+            if (member != null)
+            {
+                
+            }
+
+            return Result.Success;
+        }
+        finally
+        {
+            await memberCache.RemoveAsync(evt.GuildID, evt.User.ID);
+        }
+    }
+}