Added Utility module

src/EllieBot/Modules/Utility/Alias/AliasCommands.cs

@@ -0,0 +1,138 @@
+#nullable disable
+using Microsoft.EntityFrameworkCore;
+using EllieBot.Db;
+using EllieBot.Modules.Utility.Services;
+using EllieBot.Db.Models;
+
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility
+{
+    [Group]
+    public partial class CommandMapCommands : EllieModule<AliasService>
+    {
+        private readonly DbService _db;
+        private readonly DiscordSocketClient _client;
+
+        public CommandMapCommands(DbService db, DiscordSocketClient client)
+        {
+            _db = db;
+            _client = client;
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.Administrator)]
+        public async Task AliasesClear()
+        {
+            var count = _service.ClearAliases(ctx.Guild.Id);
+            await Response().Confirm(strs.aliases_cleared(count)).SendAsync();
+        }
+
+        [Cmd]
+        [UserPerm(GuildPerm.Administrator)]
+        [RequireContext(ContextType.Guild)]
+        public async Task Alias(string trigger, [Leftover] string mapping = null)
+        {
+            if (string.IsNullOrWhiteSpace(trigger))
+                return;
+
+            trigger = trigger.Trim().ToLowerInvariant();
+
+            if (string.IsNullOrWhiteSpace(mapping))
+            {
+                if (!_service.AliasMaps.TryGetValue(ctx.Guild.Id, out var maps) || !maps.TryRemove(trigger, out _))
+                {
+                    await Response().Error(strs.alias_remove_fail(Format.Code(trigger))).SendAsync();
+                    return;
+                }
+
+                await using (var uow = _db.GetDbContext())
+                {
+                    var config = uow.GuildConfigsForId(ctx.Guild.Id, set => set.Include(x => x.CommandAliases));
+                    var tr = config.CommandAliases.FirstOrDefault(x => x.Trigger == trigger);
+                    if (tr is not null)
+                        uow.Set<CommandAlias>().Remove(tr);
+                    uow.SaveChanges();
+                }
+
+                await Response().Confirm(strs.alias_removed(Format.Code(trigger))).SendAsync();
+                return;
+            }
+
+            _service.AliasMaps.AddOrUpdate(ctx.Guild.Id,
+                _ =>
+                {
+                    using (var uow = _db.GetDbContext())
+                    {
+                        var config = uow.GuildConfigsForId(ctx.Guild.Id, set => set.Include(x => x.CommandAliases));
+                        config.CommandAliases.Add(new()
+                        {
+                            Mapping = mapping,
+                            Trigger = trigger
+                        });
+                        uow.SaveChanges();
+                    }
+
+                    return new(new Dictionary<string, string>
+                    {
+                        { trigger.Trim().ToLowerInvariant(), mapping.ToLowerInvariant() }
+                    });
+                },
+                (_, map) =>
+                {
+                    using (var uow = _db.GetDbContext())
+                    {
+                        var config = uow.GuildConfigsForId(ctx.Guild.Id, set => set.Include(x => x.CommandAliases));
+                        var toAdd = new CommandAlias
+                        {
+                            Mapping = mapping,
+                            Trigger = trigger
+                        };
+                        var toRemove = config.CommandAliases.Where(x => x.Trigger == trigger).ToArray();
+                        if (toRemove.Any())
+                            uow.RemoveRange(toRemove);
+                        config.CommandAliases.Add(toAdd);
+                        uow.SaveChanges();
+                    }
+
+                    map.AddOrUpdate(trigger, mapping, (_, _) => mapping);
+                    return map;
+                });
+
+            await Response().Confirm(strs.alias_added(Format.Code(trigger), Format.Code(mapping))).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public async Task AliasList(int page = 1)
+        {
+            page -= 1;
+
+            if (page < 0)
+                return;
+
+            if (!_service.AliasMaps.TryGetValue(ctx.Guild.Id, out var maps) || !maps.Any())
+            {
+                await Response().Error(strs.aliases_none).SendAsync();
+                return;
+            }
+
+            var arr = maps.ToArray();
+
+            await Response()
+                  .Paginated()
+                  .Items(arr)
+                  .PageSize(10)
+                  .CurrentPage(page)
+                  .Page((items, _) =>
+                  {
+                      return _sender.CreateEmbed()
+                             .WithOkColor()
+                             .WithTitle(GetText(strs.alias_list))
+                             .WithDescription(string.Join("\n", items.Select(x => $"`{x.Key}` => `{x.Value}`")));
+                  })
+                  .SendAsync();
+        }
+    }
+}

src/EllieBot/Modules/Utility/Alias/AliasService.cs

@@ -0,0 +1,100 @@
+#nullable disable
+using Microsoft.EntityFrameworkCore;
+using EllieBot.Common.ModuleBehaviors;
+using EllieBot.Db;
+using EllieBot.Db.Models;
+
+namespace EllieBot.Modules.Utility.Services;
+
+public class AliasService : IInputTransformer, IEService
+{
+    public ConcurrentDictionary<ulong, ConcurrentDictionary<string, string>> AliasMaps { get; } = new();
+
+    private readonly DbService _db;
+    private readonly IMessageSenderService _sender;
+
+    public AliasService(
+        DiscordSocketClient client,
+        DbService db,
+        IMessageSenderService sender)
+    {
+        _sender = sender;
+
+        using var uow = db.GetDbContext();
+        var guildIds = client.Guilds.Select(x => x.Id).ToList();
+        var configs = uow.Set<GuildConfig>()
+                         .Include(gc => gc.CommandAliases)
+                         .Where(x => guildIds.Contains(x.GuildId))
+                         .ToList();
+
+        AliasMaps = new(configs.ToDictionary(x => x.GuildId,
+            x => new ConcurrentDictionary<string, string>(x.CommandAliases.DistinctBy(ca => ca.Trigger)
+                                                           .ToDictionary(ca => ca.Trigger, ca => ca.Mapping),
+                StringComparer.OrdinalIgnoreCase)));
+
+        _db = db;
+    }
+
+    public int ClearAliases(ulong guildId)
+    {
+        AliasMaps.TryRemove(guildId, out _);
+
+        int count;
+        using var uow = _db.GetDbContext();
+        var gc = uow.GuildConfigsForId(guildId, set => set.Include(x => x.CommandAliases));
+        count = gc.CommandAliases.Count;
+        gc.CommandAliases.Clear();
+        uow.SaveChanges();
+        return count;
+    }
+
+    public async Task<string> TransformInput(
+        IGuild guild,
+        IMessageChannel channel,
+        IUser user,
+        string input)
+    {
+        if (guild is null || string.IsNullOrWhiteSpace(input))
+            return null;
+
+        if (AliasMaps.TryGetValue(guild.Id, out var maps))
+        {
+            string newInput = null;
+            foreach (var (k, v) in maps)
+            {
+                if (string.Equals(input, k, StringComparison.OrdinalIgnoreCase))
+                {
+                    newInput = v;
+                }
+                else if (input.StartsWith(k + ' ', StringComparison.OrdinalIgnoreCase))
+                {
+                    if (v.Contains("%target%"))
+                        newInput = v.Replace("%target%", input[k.Length..]);
+                    else
+                        newInput = v + ' ' + input[k.Length..];
+                }
+
+                if (newInput is not null)
+                {
+                    try
+                    {
+                        var toDelete = await _sender.Response(channel)
+                                                    .Confirm($"{input} => {newInput}")
+                                                    .SendAsync();
+                        toDelete.DeleteAfter(1.5f);
+                    }
+                    catch
+                    {
+                        // ignored
+                    }
+
+                    return newInput;
+                }
+            }
+
+            return null;
+        }
+
+        return null;
+    }
+}

src/EllieBot/Modules/Utility/Calc/CalcCommand.cs

@@ -0,0 +1,48 @@
+#nullable disable
+using NCalc;
+using System.Reflection;
+
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility
+{
+    [Group]
+    public partial class CalcCommands : EllieModule
+    {
+        [Cmd]
+        public async Task Calculate([Leftover] string expression)
+        {
+            var expr = new Expression(expression, EvaluateOptions.IgnoreCase | EvaluateOptions.NoCache);
+            expr.EvaluateParameter += Expr_EvaluateParameter;
+            var result = expr.Evaluate();
+            if (!expr.HasErrors())
+                await Response().Confirm("⚙ " + GetText(strs.result), result.ToString()).SendAsync();
+            else
+                await Response().Error("⚙ " + GetText(strs.error), expr.Error).SendAsync();
+        }
+
+        private static void Expr_EvaluateParameter(string name, ParameterArgs args)
+        {
+            switch (name.ToLowerInvariant())
+            {
+                case "pi":
+                    args.Result = Math.PI;
+                    break;
+                case "e":
+                    args.Result = Math.E;
+                    break;
+            }
+        }
+
+        [Cmd]
+        public async Task CalcOps()
+        {
+            var selection = typeof(Math).GetTypeInfo()
+                                        .GetMethods()
+                                        .DistinctBy(x => x.Name)
+                                        .Select(x => x.Name)
+                                        .Except(new[] { "ToString", "Equals", "GetHashCode", "GetType" });
+            await Response().Confirm(GetText(strs.calcops(prefix)), string.Join(", ", selection)).SendAsync();
+        }
+    }
+}

src/EllieBot/Modules/Utility/ConfigCommands.cs

@@ -0,0 +1,154 @@
+#nullable disable
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility
+{
+    public partial class ConfigCommands : EllieModule
+    {
+        private readonly IEnumerable<IConfigService> _settingServices;
+
+        public ConfigCommands(IEnumerable<IConfigService> settingServices)
+            => _settingServices = settingServices.Where(x => x.Name != "medusa");
+
+        [Cmd]
+        [OwnerOnly]
+        public async Task ConfigReload(string name)
+        {
+            var setting = _settingServices.FirstOrDefault(x
+                => x.Name.StartsWith(name, StringComparison.InvariantCultureIgnoreCase));
+
+            if (setting is null)
+            {
+                var configNames = _settingServices.Select(x => x.Name);
+                var embed = _sender.CreateEmbed()
+                               .WithErrorColor()
+                               .WithDescription(GetText(strs.config_not_found(Format.Code(name))))
+                               .AddField(GetText(strs.config_list), string.Join("\n", configNames));
+
+                await Response().Embed(embed).SendAsync();
+                return;
+            }
+
+            setting.Reload();
+            await ctx.OkAsync();
+        }
+
+        [Cmd]
+        [OwnerOnly]
+        public async Task Config(string name = null, string prop = null, [Leftover] string value = null)
+        {
+            var configNames = _settingServices.Select(x => x.Name);
+
+            // if name is not provided, print available configs
+            name = name?.ToLowerInvariant();
+            if (string.IsNullOrWhiteSpace(name))
+            {
+                var embed = _sender.CreateEmbed()
+                               .WithOkColor()
+                               .WithTitle(GetText(strs.config_list))
+                               .WithDescription(string.Join("\n", configNames));
+
+                await Response().Embed(embed).SendAsync();
+                return;
+            }
+
+            var setting = _settingServices.FirstOrDefault(x
+                => x.Name.StartsWith(name, StringComparison.InvariantCultureIgnoreCase));
+
+            // if config name is not found, print error and the list of configs
+            if (setting is null)
+            {
+                var embed = _sender.CreateEmbed()
+                               .WithErrorColor()
+                               .WithDescription(GetText(strs.config_not_found(Format.Code(name))))
+                               .AddField(GetText(strs.config_list), string.Join("\n", configNames));
+
+                await Response().Embed(embed).SendAsync();
+                return;
+            }
+
+            name = setting.Name;
+
+            // if prop is not sent, then print the list of all props and values in that config
+            prop = prop?.ToLowerInvariant();
+            var propNames = setting.GetSettableProps();
+            if (string.IsNullOrWhiteSpace(prop))
+            {
+                var propStrings = GetPropsAndValuesString(setting, propNames);
+                var embed = _sender.CreateEmbed().WithOkColor().WithTitle($"⚙️ {setting.Name}").WithDescription(propStrings);
+
+
+                await Response().Embed(embed).SendAsync();
+                return;
+            }
+            // if the prop is invalid -> print error and list of 
+
+            var exists = propNames.Any(x => x == prop);
+
+            if (!exists)
+            {
+                var propStrings = GetPropsAndValuesString(setting, propNames);
+                var propErrorEmbed = _sender.CreateEmbed()
+                                        .WithErrorColor()
+                                        .WithDescription(GetText(
+                                            strs.config_prop_not_found(Format.Code(prop), Format.Code(name))))
+                                        .AddField($"⚙️ {setting.Name}", propStrings);
+
+                await Response().Embed(propErrorEmbed).SendAsync();
+                return;
+            }
+
+            // if prop is sent, but value is not, then we have to check
+            // if prop is valid -> 
+            if (string.IsNullOrWhiteSpace(value))
+            {
+                value = setting.GetSetting(prop);
+
+                if (string.IsNullOrWhiteSpace(value))
+                    value = "-";
+
+                if (prop != "currency.sign")
+                    value = Format.Code(Format.Sanitize(value.TrimTo(1000)), "json");
+
+                var embed = _sender.CreateEmbed()
+                               .WithOkColor()
+                               .AddField("Config", Format.Code(setting.Name), true)
+                               .AddField("Prop", Format.Code(prop), true)
+                               .AddField("Value", value);
+
+                var comment = setting.GetComment(prop);
+                if (!string.IsNullOrWhiteSpace(comment))
+                    embed.AddField("Comment", comment);
+
+                await Response().Embed(embed).SendAsync();
+                return;
+            }
+
+            var success = setting.SetSetting(prop, value);
+
+            if (!success)
+            {
+                await Response().Error(strs.config_edit_fail(Format.Code(prop), Format.Code(value))).SendAsync();
+                return;
+            }
+
+            await ctx.OkAsync();
+        }
+
+        private string GetPropsAndValuesString(IConfigService config, IReadOnlyCollection<string> names)
+        {
+            var propValues = names.Select(pr =>
+            {
+                var val = config.GetSetting(pr);
+                if (pr != "currency.sign")
+                    val = val?.TrimTo(28);
+                return val?.Replace("\n", "") ?? "-";
+            })
+                                  .ToList();
+
+            var strings = names.Zip(propValues, (name, value) => $"{name,-25} = {value}\n");
+
+            return Format.Code(string.Concat(strings), "hs");
+        }
+    }
+}

src/EllieBot/Modules/Utility/Giveaway/GiveawayCommands.cs

@@ -0,0 +1,118 @@
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility
+{
+    [Name("Giveaways")]
+    [Group("ga")]
+    public partial class GiveawayCommands : EllieModule<GiveawayService>
+    {
+        [Cmd]
+        [UserPerm(GuildPerm.ManageMessages)]
+        [BotPerm(ChannelPerm.ManageMessages | ChannelPerm.AddReactions)]
+        public async Task GiveawayStart(TimeSpan duration, [Leftover] string message)
+        {
+            if (duration > TimeSpan.FromDays(30))
+            {
+                await Response().Error(strs.giveaway_duration_invalid).SendAsync();
+                return;
+            }
+
+            var eb = _sender.CreateEmbed()
+                .WithPendingColor()
+                .WithTitle(GetText(strs.giveaway_starting))
+                .WithDescription(message);
+
+            var startingMsg = await Response().Embed(eb).SendAsync();
+
+            var maybeId =
+                await _service.StartGiveawayAsync(ctx.Guild.Id, ctx.Channel.Id, startingMsg.Id, duration, message);
+
+
+            if (maybeId is not int id)
+            {
+                await startingMsg.DeleteAsync();
+                await Response().Error(strs.giveaway_max_amount_reached).SendAsync();
+                return;
+            }
+
+            eb
+                .WithOkColor()
+                .WithTitle(GetText(strs.giveaway_started))
+                .WithFooter($"id:  {new kwum(id).ToString()}");
+
+            await startingMsg.AddReactionAsync(new Emoji(GiveawayService.GiveawayEmoji));
+            await startingMsg.ModifyAsync(x => x.Embed = eb.Build());
+        }
+
+        [Cmd]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task GiveawayEnd(kwum id)
+        {
+            var success = await _service.EndGiveawayAsync(ctx.Guild.Id, id);
+
+            if (!success)
+            {
+                await Response().Error(strs.giveaway_not_found).SendAsync();
+                return;
+            }
+
+            await ctx.OkAsync();
+            _ = ctx.Message.DeleteAfter(5);
+        }
+
+        [Cmd]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task GiveawayReroll(kwum id)
+        {
+            var success = await _service.RerollGiveawayAsync(ctx.Guild.Id, id);
+            if (!success)
+            {
+                await Response().Error(strs.giveaway_not_found).SendAsync();
+                return;
+            }
+
+
+            await ctx.OkAsync();
+            _ = ctx.Message.DeleteAfter(5);
+        }
+
+        [Cmd]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task GiveawayCancel(kwum id)
+        {
+            var success = await _service.CancelGiveawayAsync(ctx.Guild.Id, id);
+
+            if (!success)
+            {
+                await Response().Confirm(strs.giveaway_not_found).SendAsync();
+                return;
+            }
+
+            await Response().Confirm(strs.giveaway_cancelled).SendAsync();
+        }
+
+        [Cmd]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task GiveawayList()
+        {
+            var giveaways = await _service.GetGiveawaysAsync(ctx.Guild.Id);
+
+            if (!giveaways.Any())
+            {
+                await Response().Error(strs.no_givaways).SendAsync();
+                return;
+            }
+
+            var eb = _sender.CreateEmbed()
+                .WithTitle(GetText(strs.giveaway_list))
+                .WithOkColor();
+
+            foreach (var g in giveaways)
+            {
+                eb.AddField($"id:  {new kwum(g.Id)}", g.Message, true);
+            }
+
+            await Response().Embed(eb).SendAsync();
+        }
+    }
+}

src/EllieBot/Modules/Utility/Giveaway/GiveawayService.cs

@@ -0,0 +1,360 @@
+using LinqToDB;
+using LinqToDB.EntityFrameworkCore;
+using Microsoft.Extensions.Caching.Memory;
+using EllieBot.Common.ModuleBehaviors;
+using EllieBot.Db.Models;
+
+namespace EllieBot.Modules.Utility;
+
+public sealed class GiveawayService : IEService, IReadyExecutor
+{
+    public static string GiveawayEmoji = "🎉";
+
+    private readonly DbService _db;
+    private readonly IBotCredentials _creds;
+    private readonly DiscordSocketClient _client;
+    private readonly IMessageSenderService _sender;
+    private readonly IBotStrings _strings;
+    private readonly ILocalization _localization;
+    private readonly IMemoryCache _cache;
+    private SortedSet<GiveawayModel> _giveawayCache = new SortedSet<GiveawayModel>();
+    private readonly EllieRandom _rng;
+    private readonly ConcurrentDictionary<int, GiveawayRerollData> _rerolls = new();
+
+    public GiveawayService(DbService db, IBotCredentials creds, DiscordSocketClient client,
+        IMessageSenderService sender, IBotStrings strings, ILocalization localization, IMemoryCache cache)
+    {
+        _db = db;
+        _creds = creds;
+        _client = client;
+        _sender = sender;
+        _strings = strings;
+        _localization = localization;
+        _cache = cache;
+        _rng = new EllieRandom();
+
+
+        _client.ReactionAdded += OnReactionAdded;
+        _client.ReactionRemoved += OnReactionRemoved;
+    }
+
+    private async Task OnReactionRemoved(Cacheable<IUserMessage, ulong> msg,
+        Cacheable<IMessageChannel, ulong> arg2,
+        SocketReaction r)
+    {
+        if (!r.User.IsSpecified)
+            return;
+
+        var user = r.User.Value;
+
+        if (user.IsBot || user.IsWebhook)
+            return;
+
+        if (r.Emote is Emoji e && e.Name == GiveawayEmoji)
+        {
+            await LeaveGivawayAsync(msg.Id, user.Id);
+        }
+    }
+
+    private async Task OnReactionAdded(Cacheable<IUserMessage, ulong> msg, Cacheable<IMessageChannel, ulong> ch,
+        SocketReaction r)
+    {
+        if (!r.User.IsSpecified)
+            return;
+
+        var user = r.User.Value;
+
+        if (user.IsBot || user.IsWebhook)
+            return;
+
+        var textChannel = ch.Value as ITextChannel;
+
+        if (textChannel is null)
+            return;
+
+
+        if (r.Emote is Emoji e && e.Name == GiveawayEmoji)
+        {
+            await JoinGivawayAsync(msg.Id, user.Id, user.Username);
+        }
+    }
+
+    public async Task OnReadyAsync()
+    {
+        // load giveaways for this shard from the database
+        await using var ctx = _db.GetDbContext();
+
+        var gas = await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => Linq2DbExpressions.GuildOnShard(x.GuildId, _creds.TotalShards, _client.ShardId))
+            .ToArrayAsync();
+
+        lock (_giveawayCache)
+        {
+            _giveawayCache = new(gas, Comparer<GiveawayModel>.Create((x, y) => x.EndsAt.CompareTo(y.EndsAt)));
+        }
+
+        var timer = new PeriodicTimer(TimeSpan.FromMinutes(1));
+
+        while (await timer.WaitForNextTickAsync())
+        {
+            IEnumerable<GiveawayModel> toEnd;
+            lock (_giveawayCache)
+            {
+                toEnd = _giveawayCache.TakeWhile(
+                        x => x.EndsAt <= DateTime.UtcNow.AddSeconds(15))
+                    .ToArray();
+            }
+
+            foreach (var ga in toEnd)
+            {
+                try
+                {
+                    await EndGiveawayAsync(ga.GuildId, ga.Id);
+                }
+                catch
+                {
+                    Log.Warning("Failed to end the giveaway with id {Id}", ga.Id);
+                }
+            }
+        }
+    }
+
+    public async Task<int?> StartGiveawayAsync(ulong guildId, ulong channelId, ulong messageId, TimeSpan duration,
+        string message)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        // first check if there are more than 5 giveaways
+        var count = await ctx
+            .GetTable<GiveawayModel>()
+            .CountAsync(x => x.GuildId == guildId);
+
+        if (count >= 5)
+            return null;
+
+        var endsAt = DateTime.UtcNow + duration;
+        var ga = await ctx.GetTable<GiveawayModel>()
+            .InsertWithOutputAsync(() => new GiveawayModel
+            {
+                GuildId = guildId,
+                MessageId = messageId,
+                ChannelId = channelId,
+                Message = message,
+                EndsAt = endsAt,
+            });
+
+        lock (_giveawayCache)
+        {
+            _giveawayCache.Add(ga);
+        }
+
+        return ga.Id;
+    }
+
+
+    public async Task<bool> EndGiveawayAsync(ulong guildId, int id)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        var giveaway = await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => x.GuildId == guildId && x.Id == id)
+            .LoadWith(x => x.Participants)
+            .FirstOrDefaultAsyncLinqToDB();
+
+        if (giveaway is null)
+            return false;
+
+        await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => x.Id == id)
+            .DeleteAsync();
+
+        lock (_giveawayCache)
+        {
+            _giveawayCache.Remove(giveaway);
+        }
+
+        var winner = PickWinner(giveaway);
+
+        await OnGiveawayEnded(giveaway, winner);
+
+        return true;
+    }
+
+    private GiveawayUser? PickWinner(GiveawayModel giveaway)
+    {
+        if (giveaway.Participants.Count == 0)
+            return default;
+
+        if (giveaway.Participants.Count == 1)
+        {
+            // as this is the last participant, rerolls no longer possible
+            _cache.Remove($"reroll:{giveaway.Id}");
+            return giveaway.Participants[0];
+        }
+
+        var winner = giveaway.Participants[_rng.Next(0, giveaway.Participants.Count - 1)];
+
+        HandleWinnerSelection(giveaway, winner);
+        return winner;
+    }
+
+    public async Task<bool> RerollGiveawayAsync(ulong guildId, int giveawayId)
+    {
+        var rerollModel = _cache.Get<GiveawayRerollData>("reroll:" + giveawayId);
+
+        if (rerollModel is null)
+            return false;
+
+        var winner = PickWinner(rerollModel.Giveaway);
+
+        if (winner is not null)
+        {
+            await OnGiveawayEnded(rerollModel.Giveaway, winner);
+        }
+
+        return true;
+    }
+
+    public async Task<bool> CancelGiveawayAsync(ulong guildId, int id)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        var ga = await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => x.GuildId == guildId && x.Id == id)
+            .DeleteWithOutputAsync();
+
+        if (ga is not { Length: > 0 })
+            return false;
+
+        lock (_giveawayCache)
+        {
+            _giveawayCache.Remove(ga[0]);
+        }
+
+        return true;
+    }
+
+    public async Task<IReadOnlyCollection<GiveawayModel>> GetGiveawaysAsync(ulong guildId)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        return await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => x.GuildId == guildId)
+            .ToListAsync();
+    }
+
+    public async Task<bool> JoinGivawayAsync(ulong messageId, ulong userId, string userName)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        var giveaway = await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => x.MessageId == messageId)
+            .FirstOrDefaultAsyncLinqToDB();
+
+        if (giveaway is null)
+            return false;
+
+        // add the user to the database
+        await ctx.GetTable<GiveawayUser>()
+            .InsertAsync(
+                () => new GiveawayUser()
+                {
+                    UserId = userId,
+                    GiveawayId = giveaway.Id,
+                    Name = userName,
+                }
+            );
+
+        return true;
+    }
+
+    public async Task<bool> LeaveGivawayAsync(ulong messageId, ulong userId)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        var giveaway = await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => x.MessageId == messageId)
+            .FirstOrDefaultAsyncLinqToDB();
+
+        if (giveaway is null)
+            return false;
+
+        await ctx
+            .GetTable<GiveawayUser>()
+            .Where(x => x.UserId == userId && x.GiveawayId == giveaway.Id)
+            .DeleteAsync();
+
+        return true;
+    }
+
+    public async Task OnGiveawayEnded(GiveawayModel ga, GiveawayUser? winner)
+    {
+        var culture = _localization.GetCultureInfo(ga.GuildId);
+
+        string GetText(LocStr str)
+            => _strings.GetText(str, culture);
+
+        var ch = _client.GetChannel(ga.ChannelId) as ITextChannel;
+        if (ch is null)
+            return;
+
+        var msg = await ch.GetMessageAsync(ga.MessageId) as IUserMessage;
+        if (msg is null)
+            return;
+
+        var winnerStr = winner is null
+            ? "-"
+            : $"""
+               {winner.Name}
+               <@{winner.UserId}>
+               {Format.Code(winner.UserId.ToString())}
+               """;
+
+        var eb = _sender.CreateEmbed()
+            .WithOkColor()
+            .WithTitle(GetText(strs.giveaway_ended))
+            .WithDescription(ga.Message)
+            .WithFooter($"id: {new kwum(ga.Id).ToString()}")
+            .AddField(GetText(strs.winner),
+                winnerStr,
+                true);
+
+        try
+        {
+            await msg.ModifyAsync(x => x.Embed = eb.Build());
+        }
+        catch
+        {
+            _ = msg.DeleteAsync();
+            await _sender.Response(ch).Embed(eb).SendAsync();
+        }
+    }
+
+    private void HandleWinnerSelection(GiveawayModel ga, GiveawayUser winner)
+    {
+        ga.Participants = ga.Participants.Where(x => x.UserId != winner.UserId).ToList();
+
+        var rerollData = new GiveawayRerollData(ga);
+        _cache.Set($"reroll:{ga.Id}", rerollData, TimeSpan.FromDays(1));
+    }
+}
+
+public sealed class GiveawayRerollData
+{
+    public GiveawayModel Giveaway { get; init; }
+    public DateTime ExpiresAt { get; init; }
+
+    public GiveawayRerollData(GiveawayModel ga)
+    {
+        Giveaway = ga;
+
+        ExpiresAt = DateTime.UtcNow.AddDays(1);
+    }
+}

src/EllieBot/Modules/Utility/GuildColors.cs

@@ -0,0 +1,39 @@
+using EllieBot.Db.Models;
+
+namespace EllieBot.Modules.Utility;
+
+public interface IGuildColorsService
+{
+
+}
+
+public sealed class GuildColorsService : IGuildColorsService, IEService
+{
+    private readonly DbService _db;
+
+    public GuildColorsService(DbService db)
+    {
+        _db = db;
+    }
+
+    public async Task<GuildColors?> GetGuildColors(ulong guildId)
+    {
+        // get from database and cache it with linq2db
+
+        await using var ctx = _db.GetDbContext();
+
+        return null;
+        // return await ctx
+        //     .GuildColors
+        //     .FirstOrDefaultAsync(x => x.GuildId == guildId);
+
+    }
+}
+
+public partial class Utility
+{
+    public class GuildColorsCommands : EllieModule<IGuildColorsService>
+    {
+
+    }
+}

src/EllieBot/Modules/Utility/Info/InfoCommands.cs

@@ -0,0 +1,214 @@
+#nullable disable
+using System.Text;
+using EllieBot.Modules.Patronage;
+
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility
+{
+    [Group]
+    public partial class InfoCommands : EllieModule
+    {
+        private readonly DiscordSocketClient _client;
+        private readonly IStatsService _stats;
+        private readonly IPatronageService _ps;
+
+        public InfoCommands(DiscordSocketClient client, IStatsService stats, IPatronageService ps)
+        {
+            _client = client;
+            _stats = stats;
+            _ps = ps;
+        }
+
+        [Cmd]
+        [OwnerOnly]
+        public Task ServerInfo(ulong guildId)
+            => InternalServerInfo(guildId);
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public Task ServerInfo()
+            => InternalServerInfo(ctx.Guild.Id);
+
+        private async Task InternalServerInfo(ulong guildId)
+        {
+            var guild = (IGuild)_client.GetGuild(guildId)
+                        ?? await _client.Rest.GetGuildAsync(guildId);
+
+            if (guild is null)
+                return;
+
+            var ownername = await guild.GetUserAsync(guild.OwnerId);
+            var textchn = (await guild.GetTextChannelsAsync()).Count;
+            var voicechn = (await guild.GetVoiceChannelsAsync()).Count;
+            var channels = $@"{GetText(strs.text_channels(textchn))}
+{GetText(strs.voice_channels(voicechn))}";
+            var createdAt = new DateTime(2015, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc).AddMilliseconds(guild.Id >> 22);
+            var features = guild.Features.Value.ToString();
+            if (string.IsNullOrWhiteSpace(features))
+                features = "-";
+
+            var embed = _sender.CreateEmbed()
+                               .WithAuthor(GetText(strs.server_info))
+                               .WithTitle(guild.Name)
+                               .AddField(GetText(strs.id), guild.Id.ToString(), true)
+                               .AddField(GetText(strs.owner), ownername.ToString(), true)
+                               .AddField(GetText(strs.members), (guild as SocketGuild)?.MemberCount ?? guild.ApproximateMemberCount, true)
+                               .AddField(GetText(strs.channels), channels, true)
+                               .AddField(GetText(strs.created_at), $"{createdAt:dd.MM.yyyy HH:mm}", true)
+                               .AddField(GetText(strs.roles), (guild.Roles.Count - 1).ToString(), true)
+                               .AddField(GetText(strs.features), features)
+                               .WithOkColor();
+
+            if (Uri.IsWellFormedUriString(guild.IconUrl, UriKind.Absolute))
+                embed.WithThumbnailUrl(guild.IconUrl);
+
+            if (guild.Emotes.Any())
+            {
+                embed.AddField(GetText(strs.custom_emojis) + $"({guild.Emotes.Count})",
+                    string.Join(" ", guild.Emotes.Shuffle().Take(20).Select(e => $"{e.Name} {e}")).TrimTo(1020));
+            }
+
+            await Response().Embed(embed).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public async Task ChannelInfo(ITextChannel channel = null)
+        {
+            var ch = channel ?? (ITextChannel)ctx.Channel;
+            if (ch is null)
+                return;
+            var createdAt = new DateTime(2015, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc).AddMilliseconds(ch.Id >> 22);
+            var usercount = (await ch.GetUsersAsync().FlattenAsync()).Count();
+            var embed = _sender.CreateEmbed()
+                               .WithTitle(ch.Name)
+                               .WithDescription(ch.Topic?.SanitizeMentions(true))
+                               .AddField(GetText(strs.id), ch.Id.ToString(), true)
+                               .AddField(GetText(strs.created_at), $"{createdAt:dd.MM.yyyy HH:mm}", true)
+                               .AddField(GetText(strs.users), usercount.ToString(), true)
+                               .WithOkColor();
+            await Response().Embed(embed).SendAsync();
+        }
+
+        [Cmd]
+        [RequireUserPermission(GuildPermission.ManageRoles)]
+        public async Task RoleInfo([Leftover] SocketRole role)
+        {
+            if (role.IsEveryone)
+                return;
+
+            var createdAt = new DateTime(2015, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc)
+                .AddMilliseconds(role.Id >> 22);
+            var usercount = role.Members.LongCount();
+            var embed = _sender.CreateEmbed()
+                               .WithTitle(role.Name.TrimTo(128))
+                               .WithDescription(role.Permissions.ToList().Join(" | "))
+                               .AddField(GetText(strs.id), role.Id.ToString(), true)
+                               .AddField(GetText(strs.created_at), $"{createdAt:dd.MM.yyyy HH:mm}", true)
+                               .AddField(GetText(strs.users), usercount.ToString(), true)
+                               .AddField(GetText(strs.color),
+                                   $"#{role.Color.R:X2}{role.Color.G:X2}{role.Color.B:X2}",
+                                   true)
+                               .AddField(GetText(strs.mentionable), role.IsMentionable.ToString(), true)
+                               .AddField(GetText(strs.hoisted), role.IsHoisted.ToString(), true)
+                               .WithOkColor();
+
+            if (!string.IsNullOrWhiteSpace(role.GetIconUrl()))
+                embed = embed.WithThumbnailUrl(role.GetIconUrl());
+
+            await Response().Embed(embed).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public async Task UserInfo(IGuildUser usr = null)
+        {
+            var user = usr ?? ctx.User as IGuildUser;
+
+            if (user is null)
+                return;
+
+            var embed = _sender.CreateEmbed()
+                               .AddField(GetText(strs.name), $"**{user.Username}**#{user.Discriminator}", true);
+            if (!string.IsNullOrWhiteSpace(user.Nickname))
+                embed.AddField(GetText(strs.nickname), user.Nickname, true);
+
+            var joinedAt = GetJoinedAt(user);
+
+            embed.AddField(GetText(strs.id), user.Id.ToString(), true)
+                 .AddField(GetText(strs.joined_server), $"{joinedAt?.ToString("dd.MM.yyyy HH:mm") ?? "?"}", true)
+                 .AddField(GetText(strs.joined_discord), $"{user.CreatedAt:dd.MM.yyyy HH:mm}", true)
+                 .AddField(GetText(strs.roles),
+                     $"**({user.RoleIds.Count - 1})** - {string.Join("\n", user.GetRoles().Take(10).Where(r => r.Id != r.Guild.EveryoneRole.Id).Select(r => r.Name)).SanitizeMentions(true)}",
+                     true)
+                 .WithOkColor();
+
+            var patron = await _ps.GetPatronAsync(user.Id);
+
+            if (patron.Tier != PatronTier.None)
+            {
+                embed.WithFooter(patron.Tier switch
+                {
+                    PatronTier.V => "❤️❤️",
+                    PatronTier.X => "❤️❤️❤️",
+                    PatronTier.XX => "❤️❤️❤️❤️",
+                    PatronTier.L => "❤️❤️❤️❤️❤️",
+                    _ => "❤️",
+                });
+            }
+
+            var av = user.RealAvatarUrl();
+            if (av.IsAbsoluteUri)
+                embed.WithThumbnailUrl(av.ToString());
+
+            await Response().Embed(embed).SendAsync();
+        }
+
+        private DateTimeOffset? GetJoinedAt(IGuildUser user)
+        {
+            var joinedAt = user.JoinedAt;
+            if (user.GuildId != 117523346618318850)
+                return joinedAt;
+
+            if (user.Id == 351244576092192778)
+                return new DateTimeOffset(2019, 12, 25, 9, 33, 0, TimeSpan.Zero);
+
+            return joinedAt;
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [OwnerOnly]
+        public async Task Activity(int page = 1)
+        {
+            const int activityPerPage = 10;
+            page -= 1;
+
+            if (page < 0)
+                return;
+
+            var startCount = page * activityPerPage;
+
+            var str = new StringBuilder();
+            foreach (var kvp in _cmdHandler.UserMessagesSent.OrderByDescending(kvp => kvp.Value)
+                                           .Skip(page * activityPerPage)
+                                           .Take(activityPerPage))
+            {
+                str.AppendLine(GetText(strs.activity_line(++startCount,
+                    Format.Bold(kvp.Key.ToString()),
+                    kvp.Value / _stats.GetUptime().TotalSeconds,
+                    kvp.Value)));
+            }
+
+            await Response()
+                  .Embed(_sender.CreateEmbed()
+                                .WithTitle(GetText(strs.activity_page(page + 1)))
+                                .WithOkColor()
+                                .WithFooter(GetText(
+                                    strs.activity_users_total(_cmdHandler.UserMessagesSent.Count)))
+                                .WithDescription(str.ToString()))
+                  .SendAsync();
+        }
+    }
+}

src/EllieBot/Modules/Utility/Invite/InviteCommands.cs

@@ -0,0 +1,96 @@
+#nullable disable
+using EllieBot.Modules.Utility.Services;
+
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility
+{
+    [Group]
+    public partial class InviteCommands : EllieModule<InviteService>
+    {
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [BotPerm(ChannelPerm.CreateInstantInvite)]
+        [UserPerm(ChannelPerm.CreateInstantInvite)]
+        [EllieOptions<InviteService.Options>]
+        public async Task InviteCreate(params string[] args)
+        {
+            var (opts, success) = OptionsParser.ParseFrom(new InviteService.Options(), args);
+            if (!success)
+                return;
+
+            var ch = (ITextChannel)ctx.Channel;
+            var invite = await ch.CreateInviteAsync(opts.Expire, opts.MaxUses, opts.Temporary, opts.Unique);
+
+            await Response().Confirm($"{ctx.User.Mention} https://discord.gg/{invite.Code}").SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [BotPerm(ChannelPerm.ManageChannels)]
+        [UserPerm(ChannelPerm.ManageChannels)]
+        public async Task InviteList(int page = 1, [Leftover] ITextChannel ch = null)
+        {
+            if (--page < 0)
+                return;
+            var channel = ch ?? (ITextChannel)ctx.Channel;
+
+            var invites = await channel.GetInvitesAsync();
+
+
+            await Response()
+                  .Paginated()
+                  .Items(invites)
+                  .PageSize(9)
+                  .Page((invs, _) =>
+                  {
+                      var i = 1;
+
+                      if (!invs.Any())
+                          return _sender.CreateEmbed().WithErrorColor().WithDescription(GetText(strs.no_invites));
+
+                      var embed = _sender.CreateEmbed().WithOkColor();
+                      foreach (var inv in invs)
+                      {
+                          var expiryString = inv.MaxAge is null or 0 || inv.CreatedAt is null
+                              ? "∞"
+                              : (inv.CreatedAt.Value.AddSeconds(inv.MaxAge.Value).UtcDateTime - DateTime.UtcNow)
+                              .ToString(
+                                  """d\.hh\:mm\:ss""");
+                          var creator = inv.Inviter.ToString().TrimTo(25);
+                          var usesString = $"{inv.Uses} / {(inv.MaxUses == 0 ? "∞" : inv.MaxUses?.ToString())}";
+
+                          var desc = $@"`{GetText(strs.inv_uses)}` **{usesString}**
+`{GetText(strs.inv_expire)}` **{expiryString}**
+                        
+{inv.Url} ";
+                          embed.AddField($"#{i++} {creator}", desc);
+                      }
+
+                      return embed;
+                  })
+                  .SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [BotPerm(ChannelPerm.ManageChannels)]
+        [UserPerm(ChannelPerm.ManageChannels)]
+        public async Task InviteDelete(int index)
+        {
+            if (--index < 0)
+                return;
+
+            var ch = (ITextChannel)ctx.Channel;
+
+            var invites = await ch.GetInvitesAsync();
+
+            if (invites.Count <= index)
+                return;
+            var inv = invites.ElementAt(index);
+            await inv.DeleteAsync();
+
+            await ReplyAsync(GetText(strs.invite_deleted(Format.Bold(inv.Code))));
+        }
+    }
+}

src/EllieBot/Modules/Utility/Invite/InviteService.cs

@@ -0,0 +1,48 @@
+#nullable disable
+using CommandLine;
+
+namespace EllieBot.Modules.Utility.Services;
+
+public class InviteService : IEService
+{
+    public class Options : IEllieCommandOptions
+    {
+        [Option('m',
+            "max-uses",
+            Required = false,
+            Default = 0,
+            HelpText = "Maximum number of times the invite can be used. Default 0 (never).")]
+        public int MaxUses { get; set; }
+
+        [Option('u',
+            "unique",
+            Required = false,
+            Default = false,
+            HelpText =
+                "Not setting this flag will result in bot getting the existing invite with the same settings if it exists, instead of creating a new one.")]
+        public bool Unique { get; set; } = false;
+
+        [Option('t',
+            "temporary",
+            Required = false,
+            Default = false,
+            HelpText = "If this flag is set, the user will be kicked from the guild once they close their client.")]
+        public bool Temporary { get; set; } = false;
+
+        [Option('e',
+            "expire",
+            Required = false,
+            Default = 0,
+            HelpText = "Time in seconds to expire the invite. Default 0 (no expiry).")]
+        public int Expire { get; set; }
+
+        public void NormalizeOptions()
+        {
+            if (MaxUses < 0)
+                MaxUses = 0;
+
+            if (Expire < 0)
+                Expire = 0;
+        }
+    }
+}

src/EllieBot/Modules/Utility/Quote/IQuoteService.cs

@@ -0,0 +1,6 @@
+namespace EllieBot.Modules.Utility;
+
+public interface IQuoteService
+{
+    Task<int> DeleteAllAuthorQuotesAsync(ulong guildId, ulong userId);
+}

src/EllieBot/Modules/Utility/Quote/QuoteCommands.cs

@@ -0,0 +1,516 @@
+#nullable disable warnings
+using LinqToDB;
+using LinqToDB.EntityFrameworkCore;
+using EllieBot.Common.Yml;
+using EllieBot.Db;
+using EllieBot.Db.Models;
+using YamlDotNet.Serialization;
+using YamlDotNet.Serialization.NamingConventions;
+
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility
+{
+    [Group]
+    public partial class QuoteCommands : EllieModule
+    {
+        private const string PREPEND_EXPORT =
+            """
+            # Keys are keywords, Each key has a LIST of quotes in the following format:
+            # - id: Alphanumeric id used for commands related to the quote. (Note, when using .quotesimport, a new id will be generated.)
+            #   an: Author name
+            #   aid: Author id
+            #   txt: Quote text
+
+            """;
+
+        private static readonly ISerializer _exportSerializer = new SerializerBuilder()
+                                                                .WithEventEmitter(args
+                                                                    => new MultilineScalarFlowStyleEmitter(args))
+                                                                .WithNamingConvention(
+                                                                    CamelCaseNamingConvention.Instance)
+                                                                .WithIndentedSequences()
+                                                                .ConfigureDefaultValuesHandling(DefaultValuesHandling
+                                                                    .OmitDefaults)
+                                                                .DisableAliases()
+                                                                .Build();
+
+        private readonly DbService _db;
+        private readonly IHttpClientFactory _http;
+        private readonly IQuoteService _qs;
+
+        public QuoteCommands(DbService db, IQuoteService qs, IHttpClientFactory http)
+        {
+            _db = db;
+            _http = http;
+            _qs = qs;
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [Priority(1)]
+        public Task ListQuotes(OrderType order = OrderType.Keyword)
+            => ListQuotes(1, order);
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [Priority(0)]
+        public async Task ListQuotes(int page = 1, OrderType order = OrderType.Keyword)
+        {
+            page -= 1;
+            if (page < 0)
+                return;
+
+            IEnumerable<Quote> quotes;
+            await using (var uow = _db.GetDbContext())
+            {
+                quotes = uow.Set<Quote>().GetGroup(ctx.Guild.Id, page, order);
+            }
+
+            if (quotes.Any())
+            {
+                await Response()
+                      .Confirm(GetText(strs.quotes_page(page + 1)),
+                          string.Join("\n",
+                              quotes.Select(q
+                                  => $"`{new kwum(q.Id)}` {Format.Bold(q.Keyword.SanitizeAllMentions()),-20} by {q.AuthorName.SanitizeAllMentions()}")))
+                      .SendAsync();
+            }
+            else
+                await Response().Error(strs.quotes_page_none).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public async Task QuotePrint([Leftover] string keyword)
+        {
+            if (string.IsNullOrWhiteSpace(keyword))
+                return;
+
+            keyword = keyword.ToUpperInvariant();
+
+            Quote quote;
+            await using (var uow = _db.GetDbContext())
+            {
+                quote = await uow.Set<Quote>().GetRandomQuoteByKeywordAsync(ctx.Guild.Id, keyword);
+                //if (quote is not null)
+                //{
+                //    quote.UseCount += 1;
+                //    uow.Complete();
+                //}
+            }
+
+            if (quote is null)
+                return;
+
+            var repCtx = new ReplacementContext(Context);
+
+            var text = SmartText.CreateFrom(quote.Text);
+            text = await repSvc.ReplaceAsync(text, repCtx);
+
+            await Response()
+                  .Text($"`{new kwum(quote.Id)}` 📣 " + text)
+                  .Sanitize()
+                  .SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public async Task QuoteShow(kwum quoteId)
+        {
+            Quote? quote;
+            await using (var uow = _db.GetDbContext())
+            {
+                quote = uow.Set<Quote>().GetById(quoteId);
+                if (quote?.GuildId != ctx.Guild.Id)
+                    quote = null;
+            }
+
+            if (quote is null)
+            {
+                await Response().Error(strs.quotes_notfound).SendAsync();
+                return;
+            }
+
+            await ShowQuoteData(quote);
+        }
+
+        private EllieInteractionBase CreateEditInteraction(kwum id, Quote found)
+        {
+            var modal = new ModalBuilder()
+                        .WithCustomId("quote:edit_modal")
+                        .WithTitle($"Edit expression {id}")
+                        .AddTextInput(new TextInputBuilder()
+                                      .WithLabel(GetText(strs.response))
+                                      .WithValue(found.Text)
+                                      .WithMinLength(1)
+                                      .WithCustomId("quote:edit_modal:response")
+                                      .WithStyle(TextInputStyle.Paragraph));
+
+            var inter = _inter.Create(ctx.User.Id,
+                new ButtonBuilder()
+                    .WithEmote(Emoji.Parse("📝"))
+                    .WithLabel("Edit")
+                    .WithStyle(ButtonStyle.Primary)
+                    .WithCustomId("test"),
+                modal,
+                async (sm) =>
+                {
+                    var msg = sm.Data.Components.FirstOrDefault()?.Value;
+
+                    if (!string.IsNullOrWhiteSpace(msg))
+                        await QuoteEdit(id, msg);
+                }
+            );
+            return inter;
+        }
+
+        private async Task ShowQuoteData(Quote quote)
+        {
+            var inter = CreateEditInteraction(quote.Id, quote);
+            var eb = _sender.CreateEmbed()
+                            .WithOkColor()
+                            .WithTitle($"{GetText(strs.quote_id($"`{new kwum(quote.Id)}"))}`")
+                            .WithDescription(Format.Sanitize(quote.Text).Replace("](", "]\\(").TrimTo(4096))
+                            .AddField(GetText(strs.trigger), quote.Keyword)
+                            .WithFooter(
+                                GetText(strs.created_by($"{quote.AuthorName} ({quote.AuthorId})")));
+
+            if (!(quote.Text.Length > 4096))
+            {
+                await Response().Embed(eb).Interaction(quote.AuthorId == ctx.User.Id ? inter : null).SendAsync();
+                return;
+            }
+
+            await using var textStream = await quote.Text.ToStream();
+
+            await Response()
+                  .Embed(eb)
+                  .File(textStream, "quote.txt")
+                  .SendAsync();
+        }
+
+        private async Task QuoteSearchinternalAsync(string? keyword, string textOrAuthor)
+        {
+            if (string.IsNullOrWhiteSpace(textOrAuthor))
+                return;
+
+            keyword = keyword?.ToUpperInvariant();
+
+            Quote quote;
+            await using (var uow = _db.GetDbContext())
+            {
+                quote = await uow.Set<Quote>().SearchQuoteKeywordTextAsync(ctx.Guild.Id, keyword, textOrAuthor);
+            }
+
+            if (quote is null)
+                return;
+
+            await Response()
+                  .Confirm($"`{new kwum(quote.Id)}` 💬 ",
+                      quote.Keyword.ToLowerInvariant()
+                      + ":  "
+                      + quote.Text.SanitizeAllMentions())
+                  .SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [Priority(0)]
+        public Task QuoteSearch(string textOrAuthor)
+            => QuoteSearchinternalAsync(null, textOrAuthor);
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [Priority(1)]
+        public Task QuoteSearch(string keyword, [Leftover] string textOrAuthor)
+            => QuoteSearchinternalAsync(keyword, textOrAuthor);
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public async Task QuoteId(kwum quoteId)
+        {
+            if (quoteId < 0)
+                return;
+
+            Quote quote;
+
+            var repCtx = new ReplacementContext(Context);
+
+            await using (var uow = _db.GetDbContext())
+            {
+                quote = uow.Set<Quote>().GetById(quoteId);
+            }
+
+            if (quote is null || quote.GuildId != ctx.Guild.Id)
+            {
+                await Response().Error(strs.quotes_notfound).SendAsync();
+                return;
+            }
+
+            var infoText = $"*`{new kwum(quote.Id)}` added by {quote.AuthorName.SanitizeAllMentions()}* 🗯️ "
+                           + quote.Keyword.ToLowerInvariant().SanitizeAllMentions()
+                           + ":\n";
+
+
+            var text = SmartText.CreateFrom(quote.Text);
+            text = await repSvc.ReplaceAsync(text, repCtx);
+            await Response()
+                  .Text(infoText + text)
+                  .Sanitize()
+                  .SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public async Task QuoteAdd(string keyword, [Leftover] string text)
+        {
+            if (string.IsNullOrWhiteSpace(keyword) || string.IsNullOrWhiteSpace(text))
+                return;
+
+            keyword = keyword.ToUpperInvariant();
+
+            Quote q;
+            await using (var uow = _db.GetDbContext())
+            {
+                uow.Set<Quote>()
+                   .Add(q = new()
+                   {
+                       AuthorId = ctx.Message.Author.Id,
+                       AuthorName = ctx.Message.Author.Username,
+                       GuildId = ctx.Guild.Id,
+                       Keyword = keyword,
+                       Text = text
+                   });
+                await uow.SaveChangesAsync();
+            }
+
+            await Response().Confirm(strs.quote_added_new(Format.Code(new kwum(q.Id).ToString()))).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public async Task QuoteEdit(kwum quoteId, [Leftover] string text)
+        {
+            if (string.IsNullOrWhiteSpace(text))
+            {
+                return;
+            }
+
+            Quote q;
+            await using (var uow = _db.GetDbContext())
+            {
+                var intId = (int)quoteId;
+                var result = await uow.GetTable<Quote>()
+                                      .Where(x => x.Id == intId && x.AuthorId == ctx.User.Id)
+                                      .Set(x => x.Text, text)
+                                      .UpdateWithOutputAsync((del, ins) => ins);
+
+                q = result.FirstOrDefault();
+
+                await uow.SaveChangesAsync();
+            }
+
+            if (q is not null)
+            {
+                await Response()
+                      .Embed(_sender.CreateEmbed()
+                                    .WithOkColor()
+                                    .WithTitle(GetText(strs.quote_edited))
+                                    .WithDescription($"#{quoteId}")
+                                    .AddField(GetText(strs.trigger), q.Keyword)
+                                    .AddField(GetText(strs.response),
+                                        text.Length > 1024 ? GetText(strs.redacted_too_long) : text))
+                      .SendAsync();
+            }
+            else
+            {
+                await Response().Error(strs.expr_no_found_id).SendAsync();
+            }
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public async Task QuoteDelete(kwum quoteId)
+        {
+            var hasManageMessages = ((IGuildUser)ctx.Message.Author).GuildPermissions.ManageMessages;
+
+            var success = false;
+            string response;
+            await using (var uow = _db.GetDbContext())
+            {
+                var q = uow.Set<Quote>().GetById(quoteId);
+
+                if (q?.GuildId != ctx.Guild.Id || (!hasManageMessages && q.AuthorId != ctx.Message.Author.Id))
+                    response = GetText(strs.quotes_remove_none);
+                else
+                {
+                    uow.Set<Quote>().Remove(q);
+                    await uow.SaveChangesAsync();
+                    success = true;
+                    response = GetText(strs.quote_deleted(new kwum(quoteId)));
+                }
+            }
+
+            if (success)
+                await Response().Confirm(response).SendAsync();
+            else
+                await Response().Error(response).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public Task QuoteDeleteAuthor(IUser user)
+            => QuoteDeleteAuthor(user.Id);
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public async Task QuoteDeleteAuthor(ulong userId)
+        {
+            var hasManageMessages = ((IGuildUser)ctx.Message.Author).GuildPermissions.ManageMessages;
+
+            if (userId == ctx.User.Id || hasManageMessages)
+            {
+                var deleted = await _qs.DeleteAllAuthorQuotesAsync(ctx.Guild.Id, userId);
+                await Response().Confirm(strs.quotes_deleted_count(deleted)).SendAsync();
+            }
+            else
+            {
+                await Response().Error(strs.insuf_perms_u).SendAsync();
+            }
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task DelAllQuotes([Leftover] string keyword)
+        {
+            if (string.IsNullOrWhiteSpace(keyword))
+                return;
+
+            keyword = keyword.ToUpperInvariant();
+
+            await using (var uow = _db.GetDbContext())
+            {
+                uow.Set<Quote>().RemoveAllByKeyword(ctx.Guild.Id, keyword.ToUpperInvariant());
+
+                await uow.SaveChangesAsync();
+            }
+
+            await Response().Confirm(strs.quotes_deleted(Format.Bold(keyword.SanitizeAllMentions()))).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.Administrator)]
+        public async Task QuotesExport()
+        {
+            IEnumerable<Quote> quotes;
+            await using (var uow = _db.GetDbContext())
+            {
+                quotes = uow.Set<Quote>().GetForGuild(ctx.Guild.Id).ToList();
+            }
+
+            var exprsDict = quotes.GroupBy(x => x.Keyword)
+                                  .ToDictionary(x => x.Key, x => x.Select(ExportedQuote.FromModel));
+
+            var text = PREPEND_EXPORT + _exportSerializer.Serialize(exprsDict).UnescapeUnicodeCodePoints();
+
+            await using var stream = await text.ToStream();
+            await ctx.Channel.SendFileAsync(stream, "quote-export.yml");
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.Administrator)]
+        [Ratelimit(300)]
+#if GLOBAL_NADEKO
+            [OwnerOnly]
+#endif
+        public async Task QuotesImport([Leftover] string? input = null)
+        {
+            input = input?.Trim();
+
+            _ = ctx.Channel.TriggerTypingAsync();
+
+            if (input is null)
+            {
+                var attachment = ctx.Message.Attachments.FirstOrDefault();
+                if (attachment is null)
+                {
+                    await Response().Error(strs.expr_import_no_input).SendAsync();
+                    return;
+                }
+
+                using var client = _http.CreateClient();
+                input = await client.GetStringAsync(attachment.Url);
+
+                if (string.IsNullOrWhiteSpace(input))
+                {
+                    await Response().Error(strs.expr_import_no_input).SendAsync();
+                    return;
+                }
+            }
+
+            var succ = await ImportExprsAsync(ctx.Guild.Id, input);
+            if (!succ)
+            {
+                await Response().Error(strs.expr_import_invalid_data).SendAsync();
+                return;
+            }
+
+            await ctx.OkAsync();
+        }
+
+        private async Task<bool> ImportExprsAsync(ulong guildId, string input)
+        {
+            Dictionary<string, List<ExportedQuote>> data;
+            try
+            {
+                data = Yaml.Deserializer.Deserialize<Dictionary<string, List<ExportedQuote>>>(input);
+                if (data.Sum(x => x.Value.Count) == 0)
+                    return false;
+            }
+            catch
+            {
+                return false;
+            }
+
+            await using var uow = _db.GetDbContext();
+            foreach (var entry in data)
+            {
+                var keyword = entry.Key;
+                await uow.Set<Quote>()
+                         .AddRangeAsync(entry.Value.Where(quote => !string.IsNullOrWhiteSpace(quote.Txt))
+                                             .Select(quote => new Quote
+                                             {
+                                                 GuildId = guildId,
+                                                 Keyword = keyword,
+                                                 Text = quote.Txt,
+                                                 AuthorId = quote.Aid,
+                                                 AuthorName = quote.An
+                                             }));
+            }
+
+            await uow.SaveChangesAsync();
+            return true;
+        }
+
+        public class ExportedQuote
+        {
+            public string Id { get; set; }
+            public string An { get; set; }
+            public ulong Aid { get; set; }
+            public string Txt { get; set; }
+
+            public static ExportedQuote FromModel(Quote quote)
+                => new()
+                {
+                    Id = ((kwum)quote.Id).ToString(),
+                    An = quote.AuthorName,
+                    Aid = quote.AuthorId,
+                    Txt = quote.Text
+                };
+        }
+    }
+}

src/EllieBot/Modules/Utility/Quote/QuoteService.cs

@@ -0,0 +1,32 @@
+#nullable disable warnings
+using LinqToDB;
+using LinqToDB.EntityFrameworkCore;
+using EllieBot.Db.Models;
+
+namespace EllieBot.Modules.Utility;
+
+public sealed class QuoteService : IQuoteService, IEService
+{
+    private readonly DbService _db;
+
+    public QuoteService(DbService db)
+    {
+        _db = db;
+    }
+
+    /// <summary>
+    /// Delete all quotes created by the author in a guild
+    /// </summary>
+    /// <param name="guildId">ID of the guild</param>
+    /// <param name="userId">ID of the user</param>
+    /// <returns>Number of deleted qutoes</returns>
+    public async Task<int> DeleteAllAuthorQuotesAsync(ulong guildId, ulong userId)
+    {
+        await using var ctx = _db.GetDbContext();
+        var deleted = await ctx.GetTable<Quote>()
+            .Where(x => x.GuildId == guildId && x.AuthorId == userId)
+            .DeleteAsync();
+
+        return deleted;
+    }
+}

src/EllieBot/Modules/Utility/Remind/RemindCommands.cs

@@ -0,0 +1,225 @@
+#nullable disable
+using EllieBot.Db;
+using EllieBot.Modules.Utility.Services;
+using EllieBot.Db.Models;
+
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility
+{
+    [Group]
+    public partial class RemindCommands : EllieModule<RemindService>
+    {
+        public enum MeOrHere
+        {
+            Me,
+            Here
+        }
+
+        public enum Server
+        {
+            Server = int.MinValue,
+            Srvr = int.MinValue,
+            Serv = int.MinValue,
+            S = int.MinValue
+        }
+
+        private readonly DbService _db;
+        private readonly ITimezoneService _tz;
+
+        public RemindCommands(DbService db, ITimezoneService tz)
+        {
+            _db = db;
+            _tz = tz;
+        }
+
+        [Cmd]
+        [Priority(1)]
+        public async Task Remind(MeOrHere meorhere, [Leftover] string remindString)
+        {
+            if (!_service.TryParseRemindMessage(remindString, out var remindData))
+            {
+                await Response().Error(strs.remind_invalid).SendAsync();
+                return;
+            }
+
+            ulong target;
+            target = meorhere == MeOrHere.Me ? ctx.User.Id : ctx.Channel.Id;
+            if (!await RemindInternal(target,
+                    meorhere == MeOrHere.Me || ctx.Guild is null,
+                    remindData.Time,
+                    remindData.What,
+                    ReminderType.User))
+                await Response().Error(strs.remind_too_long).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        [Priority(0)]
+        public async Task Remind(ITextChannel channel, [Leftover] string remindString)
+        {
+            var perms = ((IGuildUser)ctx.User).GetPermissions(channel);
+            if (!perms.SendMessages || !perms.ViewChannel)
+            {
+                await Response().Error(strs.cant_read_or_send).SendAsync();
+                return;
+            }
+
+            if (!_service.TryParseRemindMessage(remindString, out var remindData))
+            {
+                await Response().Error(strs.remind_invalid).SendAsync();
+                return;
+            }
+
+
+            if (!await RemindInternal(channel.Id, false, remindData.Time, remindData.What, ReminderType.User))
+                await Response().Error(strs.remind_too_long).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.Administrator)]
+        [Priority(0)]
+        public Task RemindList(Server _, int page = 1)
+            => RemindListInternal(page, true);
+
+        [Cmd]
+        [Priority(1)]
+        public Task RemindList(int page = 1)
+            => RemindListInternal(page, false);
+
+        private async Task RemindListInternal(int page, bool isServer)
+        {
+            if (--page < 0)
+                return;
+
+            var embed = _sender.CreateEmbed()
+                           .WithOkColor()
+                           .WithTitle(GetText(isServer ? strs.reminder_server_list : strs.reminder_list));
+
+            List<Reminder> rems;
+            await using (var uow = _db.GetDbContext())
+            {
+                if (isServer)
+                    rems = uow.Set<Reminder>().RemindersForServer(ctx.Guild.Id, page).ToList();
+                else
+                    rems = uow.Set<Reminder>().RemindersFor(ctx.User.Id, page).ToList();
+            }
+
+            if (rems.Any())
+            {
+                var i = 0;
+                foreach (var rem in rems)
+                {
+                    var when = rem.When;
+                    var diff = when - DateTime.UtcNow;
+                    embed.AddField(
+                        $"#{++i + (page * 10)} {rem.When:HH:mm yyyy-MM-dd} UTC "
+                        + $"(in {diff.ToPrettyStringHm()})",
+                        $@"`Target:` {(rem.IsPrivate ? "DM" : "Channel")}
+`TargetId:` {rem.ChannelId}
+`Message:` {rem.Message?.TrimTo(50)}");
+                }
+            }
+            else
+                embed.WithDescription(GetText(strs.reminders_none));
+
+            embed.AddPaginatedFooter(page + 1, null);
+            await Response().Embed(embed).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.Administrator)]
+        [Priority(0)]
+        public Task RemindDelete(Server _, int index)
+            => RemindDelete(index, true);
+
+        [Cmd]
+        [Priority(1)]
+        public Task RemindDelete(int index)
+            => RemindDelete(index, false);
+
+        private async Task RemindDelete(int index, bool isServer)
+        {
+            if (--index < 0)
+                return;
+
+            Reminder rem = null;
+            await using (var uow = _db.GetDbContext())
+            {
+                var rems = isServer
+                    ? uow.Set<Reminder>().RemindersForServer(ctx.Guild.Id, index / 10).ToList()
+                    : uow.Set<Reminder>().RemindersFor(ctx.User.Id, index / 10).ToList();
+
+                var pageIndex = index % 10;
+                if (rems.Count > pageIndex)
+                {
+                    rem = rems[pageIndex];
+                    uow.Set<Reminder>().Remove(rem);
+                    uow.SaveChanges();
+                }
+            }
+
+            if (rem is null)
+                await Response().Error(strs.reminder_not_exist).SendAsync();
+            else
+                await Response().Confirm(strs.reminder_deleted(index + 1)).SendAsync();
+        }
+
+        private async Task<bool> RemindInternal(
+            ulong targetId,
+            bool isPrivate,
+            TimeSpan ts,
+            string message,
+            ReminderType reminderType)
+        {
+            var time = DateTime.UtcNow + ts;
+
+            if (ts > TimeSpan.FromDays(60))
+                return false;
+
+            if (ctx.Guild is not null)
+            {
+                var perms = ((IGuildUser)ctx.User).GetPermissions((IGuildChannel)ctx.Channel);
+                if (!perms.MentionEveryone)
+                    message = message.SanitizeAllMentions();
+            }
+
+            var rem = new Reminder
+            {
+                ChannelId = targetId,
+                IsPrivate = isPrivate,
+                When = time,
+                Message = message,
+                UserId = ctx.User.Id,
+                ServerId = ctx.Guild?.Id ?? 0
+            };
+
+            await using (var uow = _db.GetDbContext())
+            {
+                uow.Set<Reminder>().Add(rem);
+                await uow.SaveChangesAsync();
+            }
+
+            var gTime = ctx.Guild is null ? time : TimeZoneInfo.ConvertTime(time, _tz.GetTimeZoneOrUtc(ctx.Guild.Id));
+            try
+            {
+                await Response()
+                      .Confirm($"\u23f0 {GetText(strs.remind(
+                          Format.Bold(!isPrivate ? $"<#{targetId}>" : ctx.User.Username),
+                          Format.Bold(message),
+                          ts.ToPrettyStringHm(),
+                          gTime,
+                          gTime))}")
+                      .SendAsync();
+            }
+            catch
+            {
+            }
+
+            return true;
+        }
+    }
+}

src/EllieBot/Modules/Utility/Remind/RemindService.cs

@@ -0,0 +1,258 @@
+#nullable disable
+using System.Globalization;
+using LinqToDB;
+using LinqToDB.EntityFrameworkCore;
+using EllieBot.Common.ModuleBehaviors;
+using EllieBot.Db.Models;
+using System.Text.RegularExpressions;
+
+namespace EllieBot.Modules.Utility.Services;
+
+public class RemindService : IEService, IReadyExecutor, IRemindService
+{
+    private readonly Regex _regex =
+        new(@"^(?:(?:at|on(?:\sthe)?)?\s*(?<date>(?:\d{2}:\d{2}\s)?\d{1,2}\.\d{1,2}(?:\.\d{2,4})?)|(?:in\s?)?\s*(?:(?<mo>\d+)(?:\s?(?:months?|mos?),?))?(?:(?:\sand\s|\s*)?(?<w>\d+)(?:\s?(?:weeks?|w),?))?(?:(?:\sand\s|\s*)?(?<d>\d+)(?:\s?(?:days?|d),?))?(?:(?:\sand\s|\s*)?(?<h>\d+)(?:\s?(?:hours?|h),?))?(?:(?:\sand\s|\s*)?(?<m>\d+)(?:\s?(?:minutes?|mins?|m),?))?)\s+(?:to:?\s+)?(?<what>(?:\r\n|[\r\n]|.)+)",
+            RegexOptions.Compiled | RegexOptions.Multiline);
+
+    private readonly DiscordSocketClient _client;
+    private readonly DbService _db;
+    private readonly IBotCredentials _creds;
+    private readonly IMessageSenderService _sender;
+    private readonly CultureInfo _culture;
+
+    public RemindService(
+        DiscordSocketClient client,
+        DbService db,
+        IBotCredentials creds,
+        IMessageSenderService sender)
+    {
+        _client = client;
+        _db = db;
+        _creds = creds;
+        _sender = sender;
+
+        try
+        {
+            _culture = new CultureInfo("en-GB");
+        }
+        catch
+        {
+            _culture = CultureInfo.InvariantCulture;
+        }
+    }
+
+    public async Task OnReadyAsync()
+    {
+        using var timer = new PeriodicTimer(TimeSpan.FromSeconds(15));
+        while (await timer.WaitForNextTickAsync())
+        {
+            await OnReminderLoopTickInternalAsync();
+        }
+    }
+
+    private async Task OnReminderLoopTickInternalAsync()
+    {
+        try
+        {
+            var now = DateTime.UtcNow;
+            var reminders = await GetRemindersBeforeAsync(now);
+            if (reminders.Count == 0)
+                return;
+
+            Log.Information("Executing {ReminderCount} reminders", reminders.Count);
+
+            // make groups of 5, with 1.5 second in between each one to ensure against ratelimits
+            foreach (var group in reminders.Chunk(5))
+            {
+                var executedReminders = group.ToList();
+                await executedReminders.Select(ReminderTimerAction).WhenAll();
+                await RemoveReminders(executedReminders.Select(x => x.Id));
+                await Task.Delay(1500);
+            }
+        }
+        catch (Exception ex)
+        {
+            Log.Warning(ex, "Error in reminder loop: {ErrorMessage}", ex.Message);
+        }
+    }
+
+    private async Task RemoveReminders(IEnumerable<int> reminders)
+    {
+        await using var uow = _db.GetDbContext();
+        await uow.Set<Reminder>()
+                 .ToLinqToDBTable()
+                 .DeleteAsync(x => reminders.Contains(x.Id));
+
+        await uow.SaveChangesAsync();
+    }
+
+    private async Task<List<Reminder>> GetRemindersBeforeAsync(DateTime now)
+    {
+        await using var uow = _db.GetDbContext();
+        return await uow.Set<Reminder>()
+                        .ToLinqToDBTable()
+                        .Where(x => Linq2DbExpressions.GuildOnShard(x.ServerId, _creds.TotalShards, _client.ShardId)
+                                    && x.When < now)
+                        .ToListAsyncLinqToDB();
+    }
+
+    public bool TryParseRemindMessage(string input, out RemindObject obj)
+    {
+        var m = _regex.Match(input);
+
+        obj = default;
+        if (m.Length == 0)
+            return false;
+
+        var values = new Dictionary<string, int>();
+
+        var what = m.Groups["what"].Value;
+
+        if (string.IsNullOrWhiteSpace(what))
+        {
+            Log.Warning("No message provided for the reminder");
+            return false;
+        }
+
+        TimeSpan ts;
+
+        var dateString = m.Groups["date"].Value;
+        if (!string.IsNullOrWhiteSpace(dateString))
+        {
+            var now = DateTime.UtcNow;
+
+            if (!DateTime.TryParse(dateString, _culture, DateTimeStyles.None, out var dt))
+            {
+                Log.Warning("Invalid remind datetime format");
+                return false;
+            }
+
+            if (now >= dt)
+            {
+                Log.Warning("That remind time has already passed");
+                return false;
+            }
+
+            ts = dt - now;
+        }
+        else
+        {
+            foreach (var groupName in _regex.GetGroupNames())
+            {
+                if (groupName is "0" or "what")
+                    continue;
+
+                if (string.IsNullOrWhiteSpace(m.Groups[groupName].Value))
+                {
+                    values[groupName] = 0;
+                    continue;
+                }
+
+                if (!int.TryParse(m.Groups[groupName].Value, out var value))
+                {
+                    Log.Warning("Reminder regex group {GroupName} has invalid value", groupName);
+                    return false;
+                }
+
+                if (value < 1)
+                {
+                    Log.Warning("Reminder time value has to be an integer greater than 0");
+                    return false;
+                }
+
+                values[groupName] = value;
+            }
+
+            ts = new TimeSpan((30 * values["mo"]) + (7 * values["w"]) + values["d"], values["h"], values["m"], 0);
+        }
+
+
+        obj = new()
+        {
+            Time = ts,
+            What = what
+        };
+
+        return true;
+    }
+
+    private async Task ReminderTimerAction(Reminder r)
+    {
+        try
+        {
+            IMessageChannel ch;
+            if (r.IsPrivate)
+            {
+                var user = _client.GetUser(r.ChannelId);
+                if (user is null)
+                    return;
+                ch = await user.CreateDMChannelAsync();
+            }
+            else
+                ch = _client.GetGuild(r.ServerId)?.GetTextChannel(r.ChannelId);
+
+            if (ch is null)
+                return;
+
+            var st = SmartText.CreateFrom(r.Message);
+
+            if (st is SmartEmbedText set)
+            {
+                await _sender.Response(ch).Embed(set.GetEmbed()).SendAsync();
+            }
+            else if (st is SmartEmbedTextArray seta)
+            {
+                await _sender.Response(ch).Embeds(seta.GetEmbedBuilders()).SendAsync();
+            }
+            else
+            {
+                await _sender.Response(ch)
+                             .Embed(_sender.CreateEmbed()
+                                    .WithOkColor()
+                                    .WithTitle("Reminder")
+                                    .AddField("Created At",
+                                        r.DateAdded.HasValue ? r.DateAdded.Value.ToLongDateString() : "?")
+                                    .AddField("By",
+                                        (await ch.GetUserAsync(r.UserId))?.ToString() ?? r.UserId.ToString()))
+                             .Text(r.Message)
+                             .SendAsync();
+            }
+        }
+        catch (Exception ex)
+        {
+            Log.Warning(ex, "Error executing reminder {ReminderId}: {ErrorMessage}", r.Id, ex.Message);
+        }
+    }
+
+    public struct RemindObject
+    {
+        public string What { get; set; }
+        public TimeSpan Time { get; set; }
+    }
+
+    public async Task AddReminderAsync(
+        ulong userId,
+        ulong targetId,
+        ulong? guildId,
+        bool isPrivate,
+        DateTime time,
+        string message,
+        ReminderType reminderType)
+    {
+        var rem = new Reminder
+        {
+            UserId = userId,
+            ChannelId = targetId,
+            ServerId = guildId ?? 0,
+            IsPrivate = isPrivate,
+            When = time,
+            Message = message,
+            Type = reminderType
+        };
+
+        await using var ctx = _db.GetDbContext();
+        await ctx.Set<Reminder>()
+                 .AddAsync(rem);
+        await ctx.SaveChangesAsync();
+    }
+}

src/EllieBot/Modules/Utility/Repeater/RepeatCommands.cs

@@ -0,0 +1,240 @@
+using EllieBot.Common.TypeReaders;
+using EllieBot.Common.TypeReaders.Models;
+using EllieBot.Modules.Utility.Services;
+
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility
+{
+    [Group]
+    public partial class RepeatCommands : EllieModule<RepeaterService>
+    {
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task RepeatSkip(int index)
+        {
+            if (--index < 0)
+                return;
+
+            var result = await _service.ToggleSkipNextAsync(ctx.Guild.Id, index);
+
+            if (result is null)
+            {
+                await Response().Error(strs.index_out_of_range).SendAsync();
+                return;
+            }
+
+            if (result is true)
+            {
+                await Response().Confirm(strs.repeater_skip_next).SendAsync();
+            }
+            else
+            {
+                await Response().Confirm(strs.repeater_dont_skip_next).SendAsync();
+            }
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task RepeatInvoke(int index)
+        {
+            if (--index < 0)
+                return;
+
+            var success = await _service.TriggerExternal(ctx.Guild.Id, index);
+            if (!success)
+                await Response().Error(strs.repeat_invoke_none).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task RepeatRemove(int index)
+        {
+            if (--index < 0)
+                return;
+
+            var removed = await _service.RemoveByIndexAsync(ctx.Guild.Id, index);
+            if (removed is null)
+            {
+                await Response().Error(strs.repeater_remove_fail).SendAsync();
+                return;
+            }
+
+            var description = GetRepeaterInfoString(removed);
+            await Response().Embed(_sender.CreateEmbed()
+                .WithOkColor()
+                .WithTitle(GetText(strs.repeater_removed(index + 1)))
+                .WithDescription(description)).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task RepeatRedundant(int index)
+        {
+            if (--index < 0)
+                return;
+
+            var result = await _service.ToggleRedundantAsync(ctx.Guild.Id, index);
+
+            if (result is null)
+            {
+                await Response().Error(strs.index_out_of_range).SendAsync();
+                return;
+            }
+
+            if (result.Value)
+                await Response().Error(strs.repeater_redundant_no(index + 1)).SendAsync();
+            else
+                await Response().Confirm(strs.repeater_redundant_yes(index + 1)).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        [Priority(-2)]
+        public Task Repeat([Leftover] string message)
+            => Repeat(ctx.Channel, null, null, message);
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        [Priority(-1)]
+        public Task Repeat(ITextChannel channel, [Leftover] string message)
+            => Repeat(channel, null, null, message);
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        [Priority(0)]
+        public Task Repeat(StoopidTime interval, [Leftover] string message)
+            => Repeat(ctx.Channel, null, interval, message);
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        [Priority(0)]
+        public Task Repeat(ITextChannel channel, StoopidTime interval, [Leftover] string message)
+            => Repeat(channel, null, interval, message);
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        [Priority(1)]
+        public Task Repeat(GuildDateTime timeOfDay, [Leftover] string message)
+            => Repeat(timeOfDay, null, message);
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        [Priority(1)]
+        public Task Repeat(ITextChannel channel, GuildDateTime timeOfDay, [Leftover] string message)
+            => Repeat(channel, timeOfDay, null, message);
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        [Priority(2)]
+        public Task Repeat(GuildDateTime? timeOfDay, StoopidTime? interval, [Leftover] string message)
+            => Repeat(ctx.Channel, timeOfDay, interval, message);
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        [Priority(3)]
+        public async Task Repeat(IMessageChannel channel, GuildDateTime? timeOfDay, StoopidTime? interval,
+            [Leftover] string message)
+        {
+            if (channel is not ITextChannel txtCh || txtCh.GuildId != ctx.Guild.Id)
+                return;
+
+            var perms = ((IGuildUser)ctx.User).GetPermissions(txtCh);
+            if (!perms.SendMessages)
+                return;
+
+            var startTimeOfDay = timeOfDay?.InputTimeUtc.TimeOfDay;
+            // if interval not null, that means user specified it (don't change it)
+
+            // if interval is null set the default to:
+            // if time of day is specified: 1 day
+            // else 5 minutes
+            var realInterval =
+                interval?.Time ?? (startTimeOfDay is null ? TimeSpan.FromMinutes(5) : TimeSpan.FromDays(1));
+
+            if (string.IsNullOrWhiteSpace(message)
+                || (interval is not null
+                    && (interval.Time > TimeSpan.FromMinutes(25000) || interval.Time < TimeSpan.FromMinutes(1))))
+                return;
+
+            message = ((IGuildUser)ctx.User).GuildPermissions.MentionEveryone
+                ? message
+                : message.SanitizeMentions(true);
+
+            var runner = await _service.AddRepeaterAsync(channel.Id,
+                ctx.Guild.Id,
+                realInterval,
+                message,
+                false,
+                startTimeOfDay);
+
+            if (runner is null)
+            {
+                await Response().Error(strs.repeater_exceed_limit(5)).SendAsync();
+                return;
+            }
+
+            var description = GetRepeaterInfoString(runner);
+            await Response().Embed(_sender.CreateEmbed()
+                .WithOkColor()
+                .WithTitle(GetText(strs.repeater_created))
+                .WithDescription(description)).SendAsync();
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task RepeatList()
+        {
+            var repeaters = _service.GetRepeaters(ctx.Guild.Id);
+            if (repeaters.Count == 0)
+            {
+                await Response().Confirm(strs.repeaters_none).SendAsync();
+                return;
+            }
+
+            var embed = _sender.CreateEmbed().WithTitle(GetText(strs.list_of_repeaters)).WithOkColor();
+
+            var i = 0;
+            foreach (var runner in repeaters.OrderBy(r => r.Repeater.Id))
+            {
+                var description = GetRepeaterInfoString(runner);
+                var name = $"#`{++i}` {(_service.IsRepeaterSkipped(runner.Repeater.Id) ? "🦘" : "")}";
+                embed.AddField(name, description);
+            }
+
+            await Response().Embed(embed).SendAsync();
+        }
+
+        private string GetRepeaterInfoString(RunningRepeater runner)
+        {
+            var intervalString = Format.Bold(runner.Repeater.Interval.ToPrettyStringHm());
+            var executesIn = runner.NextTime < DateTime.UtcNow ? TimeSpan.Zero : runner.NextTime - DateTime.UtcNow;
+            var executesInString = Format.Bold(executesIn.ToPrettyStringHm());
+            var message = Format.Sanitize(runner.Repeater.Message.TrimTo(50));
+
+            var description = string.Empty;
+            if (_service.IsNoRedundant(runner.Repeater.Id))
+                description = Format.Underline(Format.Bold(GetText(strs.no_redundant))) + "\n\n";
+
+            description += $"<#{runner.Repeater.ChannelId}>\n"
+                           + $"`{GetText(strs.interval_colon)}` {intervalString}\n"
+                           + $"`{GetText(strs.executes_in_colon)}` {executesInString}\n"
+                           + $"`{GetText(strs.message_colon)}` {message}";
+
+            return description;
+        }
+    }
+}

src/EllieBot/Modules/Utility/Repeater/RepeaterService.cs

@@ -0,0 +1,443 @@
+using LinqToDB;
+using LinqToDB.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore;
+using EllieBot.Common.ModuleBehaviors;
+using EllieBot.Db.Models;
+
+namespace EllieBot.Modules.Utility.Services;
+
+public sealed class RepeaterService : IReadyExecutor, IEService
+{
+    private const int MAX_REPEATERS = 5;
+
+    private readonly DbService _db;
+    private readonly IReplacementService _repSvc;
+    private readonly IBotCredentials _creds;
+    private readonly DiscordSocketClient _client;
+    private readonly LinkedList<RunningRepeater> _repeaterQueue;
+    private readonly ConcurrentHashSet<int> _noRedundant;
+    private readonly ConcurrentHashSet<int> _skipNext = new();
+
+    private readonly object _queueLocker = new();
+    private readonly IMessageSenderService _sender;
+
+    public RepeaterService(
+        DiscordSocketClient client,
+        DbService db,
+        IReplacementService repSvc,
+        IBotCredentials creds,
+        IMessageSenderService sender)
+    {
+        _db = db;
+        _repSvc = repSvc;
+        _creds = creds;
+        _client = client;
+        _sender = sender;
+
+        using var uow = _db.GetDbContext();
+        var shardRepeaters = uow.Set<Repeater>()
+                                .Where(x => (int)(x.GuildId / Math.Pow(2, 22)) % _creds.TotalShards
+                                            == _client.ShardId)
+                                .AsNoTracking()
+                                .ToList();
+
+        _noRedundant = new(shardRepeaters.Where(x => x.NoRedundant).Select(x => x.Id));
+
+        _repeaterQueue = new(shardRepeaters.Select(rep => new RunningRepeater(rep)).OrderBy(x => x.NextTime));
+    }
+
+    public Task OnReadyAsync()
+    {
+        _ = Task.Run(RunRepeatersLoop);
+        return Task.CompletedTask;
+    }
+
+    private async Task RunRepeatersLoop()
+    {
+        while (true)
+        {
+            try
+            {
+                // calculate timeout for the first item
+                var timeout = GetNextTimeout();
+
+                // wait it out, and recalculate afterwards
+                // because repeaters might've been modified meanwhile
+                if (timeout > TimeSpan.Zero)
+                {
+                    await Task.Delay(timeout > TimeSpan.FromMinutes(1) ? TimeSpan.FromMinutes(1) : timeout);
+                    continue;
+                }
+
+                // collect (remove) all repeaters which need to run (3 seconds tolerance)
+                var now = DateTime.UtcNow + TimeSpan.FromSeconds(3);
+
+                var toExecute = new List<RunningRepeater>();
+                lock (_repeaterQueue)
+                {
+                    var current = _repeaterQueue.First;
+                    while (true)
+                    {
+                        if (current is null || current.Value.NextTime > now)
+                            break;
+
+                        toExecute.Add(current.Value);
+                        current = current.Next;
+                    }
+                }
+
+                // execute
+                foreach (var chunk in toExecute.Chunk(5))
+                    await chunk.Where(x => !_skipNext.TryRemove(x.Repeater.Id)).Select(Trigger).WhenAll();
+
+                // reinsert
+                foreach (var rep in toExecute)
+                    await HandlePostExecute(rep);
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, "Critical error in repeater queue: {ErrorMessage}", ex.Message);
+                await Task.Delay(5000);
+            }
+        }
+    }
+
+    private async Task HandlePostExecute(RunningRepeater rep)
+    {
+        if (rep.ErrorCount >= 10)
+        {
+            RemoveFromQueue(rep.Repeater.Id);
+            await RemoveRepeaterInternal(rep.Repeater);
+            return;
+        }
+
+        UpdatePosition(rep);
+    }
+
+    private void UpdatePosition(RunningRepeater rep)
+    {
+        lock (_queueLocker)
+        {
+            rep.UpdateNextTime();
+            _repeaterQueue.Remove(rep);
+            AddToQueue(rep);
+        }
+    }
+
+    public async Task<bool> TriggerExternal(ulong guildId, int index)
+    {
+        await using var uow = _db.GetDbContext();
+
+        var toTrigger = await uow.Set<Repeater>()
+                                 .AsNoTracking()
+                                 .Where(x => x.GuildId == guildId)
+                                 .Skip(index)
+                                 .FirstOrDefaultAsyncEF();
+
+        if (toTrigger is null)
+            return false;
+
+        LinkedListNode<RunningRepeater>? node;
+        lock (_queueLocker)
+        {
+            node = _repeaterQueue.FindNode(x => x.Repeater.Id == toTrigger.Id);
+            if (node is null)
+                return false;
+
+            _repeaterQueue.Remove(node);
+        }
+
+        await Trigger(node.Value);
+        await HandlePostExecute(node.Value);
+        return true;
+    }
+
+    private void AddToQueue(RunningRepeater rep)
+    {
+        lock (_queueLocker)
+        {
+            var current = _repeaterQueue.First;
+            if (current is null)
+            {
+                _repeaterQueue.AddFirst(rep);
+                return;
+            }
+
+            while (current is not null && current.Value.NextTime < rep.NextTime)
+                current = current.Next;
+
+            if (current is null)
+                _repeaterQueue.AddLast(rep);
+            else
+                _repeaterQueue.AddBefore(current, rep);
+        }
+    }
+
+    private TimeSpan GetNextTimeout()
+    {
+        lock (_queueLocker)
+        {
+            var first = _repeaterQueue.First;
+
+            // if there are no items in the queue, just wait out the minimum duration (1 minute) and try again
+            if (first is null)
+                return TimeSpan.FromMinutes(1);
+
+            return first.Value.NextTime - DateTime.UtcNow;
+        }
+    }
+
+    private async Task Trigger(RunningRepeater rr)
+    {
+        var repeater = rr.Repeater;
+
+        void ChannelMissingError()
+        {
+            rr.ErrorCount = int.MaxValue;
+            Log.Warning("[Repeater] Channel [{Channelid}] for not found or insufficient permissions. "
+                        + "Repeater will be removed. ",
+                repeater.ChannelId);
+        }
+
+        var channel = _client.GetChannel(repeater.ChannelId) as ITextChannel;
+        if (channel is null)
+        {
+            try
+            {
+                channel = await _client.Rest.GetChannelAsync(repeater.ChannelId) as ITextChannel;
+            }
+            catch
+            {
+            }
+        }
+
+        if (channel is null)
+        {
+            ChannelMissingError();
+            return;
+        }
+
+        var guild = _client.GetGuild(channel.GuildId);
+        if (guild is null)
+        {
+            ChannelMissingError();
+            return;
+        }
+
+        if (_noRedundant.Contains(repeater.Id))
+        {
+            try
+            {
+                var lastMsgInChannel = await channel.GetMessagesAsync(2).Flatten().FirstAsync();
+                if (lastMsgInChannel is not null && lastMsgInChannel.Id == repeater.LastMessageId)
+                    return;
+            }
+            catch (Exception ex)
+            {
+                Log.Warning(ex,
+                    "[Repeater] Error while getting last channel message in {GuildId}/{ChannelId} "
+                    + "Bot probably doesn't have the permission to read message history",
+                    guild.Id,
+                    channel.Id);
+            }
+        }
+
+        if (repeater.LastMessageId is { } lastMessageId)
+        {
+            try
+            {
+                var oldMsg = await channel.GetMessageAsync(lastMessageId);
+                if (oldMsg is not null)
+                    await oldMsg.DeleteAsync();
+            }
+            catch (Exception ex)
+            {
+                Log.Warning(ex,
+                    "[Repeater] Error while deleting previous message in {GuildId}/{ChannelId}",
+                    guild.Id,
+                    channel.Id);
+            }
+        }
+
+        var repCtx = new ReplacementContext(client: _client,
+            guild: guild,
+            channel: channel,
+            users: guild.CurrentUser);
+
+        try
+        {
+            var text = SmartText.CreateFrom(repeater.Message);
+            text = await _repSvc.ReplaceAsync(text, repCtx);
+
+            var newMsg = await _sender.Response(channel)
+                                      .Text(text)
+                                      .Sanitize(false)
+                                      .SendAsync();
+
+            _ = newMsg.AddReactionAsync(new Emoji("🔄"));
+
+            if (_noRedundant.Contains(repeater.Id))
+            {
+                await SetRepeaterLastMessageInternal(repeater.Id, newMsg.Id);
+                repeater.LastMessageId = newMsg.Id;
+            }
+
+            rr.ErrorCount = 0;
+        }
+        catch (Exception ex)
+        {
+            Log.Error(ex, "[Repeater] Error sending repeat message ({ErrorCount})", rr.ErrorCount++);
+        }
+    }
+
+    private async Task RemoveRepeaterInternal(Repeater r)
+    {
+        _noRedundant.TryRemove(r.Id);
+
+        await using var uow = _db.GetDbContext();
+        await uow.Set<Repeater>().DeleteAsync(x => x.Id == r.Id);
+
+        await uow.SaveChangesAsync();
+    }
+
+    private RunningRepeater? RemoveFromQueue(int id)
+    {
+        lock (_queueLocker)
+        {
+            var node = _repeaterQueue.FindNode(x => x.Repeater.Id == id);
+            if (node is null)
+                return null;
+
+            _repeaterQueue.Remove(node);
+            return node.Value;
+        }
+    }
+
+    private async Task SetRepeaterLastMessageInternal(int repeaterId, ulong lastMsgId)
+    {
+        await using var uow = _db.GetDbContext();
+        await uow.Set<Repeater>()
+                 .AsQueryable()
+                 .Where(x => x.Id == repeaterId)
+                 .UpdateAsync(rep => new()
+                 {
+                     LastMessageId = lastMsgId
+                 });
+    }
+
+    public async Task<RunningRepeater?> AddRepeaterAsync(
+        ulong channelId,
+        ulong guildId,
+        TimeSpan interval,
+        string message,
+        bool isNoRedundant,
+        TimeSpan? startTimeOfDay)
+    {
+        var rep = new Repeater
+        {
+            ChannelId = channelId,
+            GuildId = guildId,
+            Interval = interval,
+            Message = message,
+            NoRedundant = isNoRedundant,
+            LastMessageId = null,
+            StartTimeOfDay = startTimeOfDay,
+            DateAdded = DateTime.UtcNow
+        };
+
+        await using var uow = _db.GetDbContext();
+
+        if (await uow.Set<Repeater>().CountAsyncEF(x => x.GuildId == guildId) < MAX_REPEATERS)
+            uow.Set<Repeater>().Add(rep);
+        else
+            return null;
+
+        await uow.SaveChangesAsync();
+
+        if (isNoRedundant)
+            _noRedundant.Add(rep.Id);
+        var runner = new RunningRepeater(rep);
+        AddToQueue(runner);
+        return runner;
+    }
+
+    public async Task<RunningRepeater?> RemoveByIndexAsync(ulong guildId, int index)
+    {
+        ArgumentOutOfRangeException.ThrowIfGreaterThan(index, MAX_REPEATERS * 2);
+
+        await using var uow = _db.GetDbContext();
+        var toRemove = await uow.Set<Repeater>()
+                                .AsNoTracking()
+                                .Where(x => x.GuildId == guildId)
+                                .Skip(index)
+                                .FirstOrDefaultAsyncEF();
+
+        if (toRemove is null)
+            return null;
+
+        // first try removing from queue because it can fail
+        // while triggering. Instruct user to try again
+        var removed = RemoveFromQueue(toRemove.Id);
+        if (removed is null)
+            return null;
+
+        _noRedundant.TryRemove(toRemove.Id);
+        uow.Set<Repeater>().Remove(toRemove);
+        await uow.SaveChangesAsync();
+        return removed;
+    }
+
+    public IReadOnlyCollection<RunningRepeater> GetRepeaters(ulong guildId)
+    {
+        lock (_queueLocker)
+        {
+            return _repeaterQueue.Where(x => x.Repeater.GuildId == guildId).ToList();
+        }
+    }
+
+    public async Task<bool?> ToggleRedundantAsync(ulong guildId, int index)
+    {
+        await using var uow = _db.GetDbContext();
+        var toToggle = await uow.Set<Repeater>()
+                                .AsQueryable()
+                                .Where(x => x.GuildId == guildId)
+                                .Skip(index)
+                                .FirstOrDefaultAsyncEF();
+
+        if (toToggle is null)
+            return null;
+
+        var newValue = toToggle.NoRedundant = !toToggle.NoRedundant;
+        if (newValue)
+            _noRedundant.Add(toToggle.Id);
+        else
+            _noRedundant.TryRemove(toToggle.Id);
+
+        await uow.SaveChangesAsync();
+        return newValue;
+    }
+
+    public async Task<bool?> ToggleSkipNextAsync(ulong guildId, int index)
+    {
+        await using var ctx = _db.GetDbContext();
+        var toSkip = await ctx.Set<Repeater>()
+                              .Where(x => x.GuildId == guildId)
+                              .Skip(index)
+                              .FirstOrDefaultAsyncEF();
+
+        if (toSkip is null)
+            return null;
+
+        if (_skipNext.Add(toSkip.Id))
+            return true;
+
+        _skipNext.TryRemove(toSkip.Id);
+        return false;
+    }
+
+    public bool IsNoRedundant(int repeaterId)
+        => _noRedundant.Contains(repeaterId);
+
+    public bool IsRepeaterSkipped(int repeaterId)
+        => _skipNext.Contains(repeaterId);
+}

src/EllieBot/Modules/Utility/Repeater/RunningRepeater.cs

@@ -0,0 +1,92 @@
+#nullable disable
+using EllieBot.Db.Models;
+
+namespace EllieBot.Modules.Utility.Services;
+
+public sealed class RunningRepeater
+{
+    public DateTime NextTime { get; private set; }
+
+    public Repeater Repeater { get; }
+    public int ErrorCount { get; set; }
+
+    public RunningRepeater(Repeater repeater)
+    {
+        Repeater = repeater;
+        NextTime = CalculateInitialExecution();
+    }
+
+    public void UpdateNextTime()
+        => NextTime = DateTime.UtcNow + Repeater.Interval;
+
+    private DateTime CalculateInitialExecution()
+    {
+        if (Repeater.StartTimeOfDay is not null)
+        {
+            // if there was a start time of day
+            // calculate whats the next time of day repeat should trigger at
+            // based on teh dateadded
+
+            // i know this is not null because of the check in the query
+            var added = Repeater.DateAdded;
+
+            // initial trigger was the time of day specified by the command.
+            var initialTriggerTimeOfDay = Repeater.StartTimeOfDay.Value;
+
+            DateTime initialDateTime;
+
+            // if added timeofday is less than specified timeofday for initial trigger
+            // that means the repeater first ran that same day at that exact specified time
+            if (added.TimeOfDay <= initialTriggerTimeOfDay)
+                // in that case, just add the difference to make sure the timeofday is the same
+                initialDateTime = added + (initialTriggerTimeOfDay - added.TimeOfDay);
+            else
+                // if not, then it ran at that time the following day
+                // in other words; Add one day, and subtract how much time passed since that time of day
+                initialDateTime = added + TimeSpan.FromDays(1) - (added.TimeOfDay - initialTriggerTimeOfDay);
+
+            return CalculateInitialInterval(initialDateTime);
+        }
+
+        // if repeater is not running daily, its initial time is the time it was Added at, plus the interval
+        return CalculateInitialInterval(Repeater.DateAdded + Repeater.Interval);
+    }
+
+    /// <summary>
+    ///     Calculate when is the proper time to run the repeater again based on initial time repeater ran.
+    /// </summary>
+    /// <param name="initialDateTime">Initial time repeater ran at (or should run at).</param>
+    private DateTime CalculateInitialInterval(DateTime initialDateTime)
+    {
+        // if the initial time is greater than now, that means the repeater didn't still execute a single time.
+        // just schedule it
+        if (initialDateTime > DateTime.UtcNow)
+            return initialDateTime;
+
+        // else calculate based on minutes difference
+
+        // get the difference
+        var diff = DateTime.UtcNow - initialDateTime;
+
+        // see how many times the repeater theoretically ran already
+        var triggerCount = diff / Repeater.Interval;
+
+        // ok lets say repeater was scheduled to run 10h ago.
+        // we have an interval of 2.4h
+        // repeater should've ran 4 times- that's 9.6h
+        // next time should be in 2h from now exactly
+        // 10/2.4 is 4.166
+        // 4.166 - Math.Truncate(4.166) is 0.166
+        // initial interval multiplier is 1 - 0.166 = 0.834
+        // interval (2.4h) * 0.834 is 2.0016 and that is the initial interval
+
+        var initialIntervalMultiplier = 1 - (triggerCount - Math.Truncate(triggerCount));
+        return DateTime.UtcNow + (Repeater.Interval * initialIntervalMultiplier);
+    }
+
+    public override bool Equals(object obj)
+        => obj is RunningRepeater rr && rr.Repeater.Id == Repeater.Id;
+
+    public override int GetHashCode()
+        => Repeater.Id;
+}

src/EllieBot/Modules/Utility/StreamRole/StreamRoleCommands.cs

@@ -0,0 +1,97 @@
+#nullable disable
+using EllieBot.Modules.Utility.Common;
+using EllieBot.Modules.Utility.Services;
+
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility
+{
+    public partial class StreamRoleCommands : EllieModule<StreamRoleService>
+    {
+        [Cmd]
+        [BotPerm(GuildPerm.ManageRoles)]
+        [UserPerm(GuildPerm.ManageRoles)]
+        [RequireContext(ContextType.Guild)]
+        public async Task StreamRole(IRole fromRole, IRole addRole)
+        {
+            await _service.SetStreamRole(fromRole, addRole);
+
+            await Response().Confirm(strs.stream_role_enabled(Format.Bold(fromRole.ToString()),
+                Format.Bold(addRole.ToString()))).SendAsync();
+        }
+
+        [Cmd]
+        [BotPerm(GuildPerm.ManageRoles)]
+        [UserPerm(GuildPerm.ManageRoles)]
+        [RequireContext(ContextType.Guild)]
+        public async Task StreamRole()
+        {
+            await _service.StopStreamRole(ctx.Guild);
+            await Response().Confirm(strs.stream_role_disabled).SendAsync();
+        }
+
+        [Cmd]
+        [BotPerm(GuildPerm.ManageRoles)]
+        [UserPerm(GuildPerm.ManageRoles)]
+        [RequireContext(ContextType.Guild)]
+        public async Task StreamRoleKeyword([Leftover] string keyword = null)
+        {
+            var kw = await _service.SetKeyword(ctx.Guild, keyword);
+
+            if (string.IsNullOrWhiteSpace(keyword))
+                await Response().Confirm(strs.stream_role_kw_reset).SendAsync();
+            else
+                await Response().Confirm(strs.stream_role_kw_set(Format.Bold(kw))).SendAsync();
+        }
+
+        [Cmd]
+        [BotPerm(GuildPerm.ManageRoles)]
+        [UserPerm(GuildPerm.ManageRoles)]
+        [RequireContext(ContextType.Guild)]
+        public async Task StreamRoleBlacklist(AddRemove action, [Leftover] IGuildUser user)
+        {
+            var success = await _service.ApplyListAction(StreamRoleListType.Blacklist,
+                ctx.Guild,
+                action,
+                user.Id,
+                user.ToString());
+
+            if (action == AddRemove.Add)
+            {
+                if (success)
+                    await Response().Confirm(strs.stream_role_bl_add(Format.Bold(user.ToString()))).SendAsync();
+                else
+                    await Response().Confirm(strs.stream_role_bl_add_fail(Format.Bold(user.ToString()))).SendAsync();
+            }
+            else if (success)
+                await Response().Confirm(strs.stream_role_bl_rem(Format.Bold(user.ToString()))).SendAsync();
+            else
+                await Response().Error(strs.stream_role_bl_rem_fail(Format.Bold(user.ToString()))).SendAsync();
+        }
+
+        [Cmd]
+        [BotPerm(GuildPerm.ManageRoles)]
+        [UserPerm(GuildPerm.ManageRoles)]
+        [RequireContext(ContextType.Guild)]
+        public async Task StreamRoleWhitelist(AddRemove action, [Leftover] IGuildUser user)
+        {
+            var success = await _service.ApplyListAction(StreamRoleListType.Whitelist,
+                ctx.Guild,
+                action,
+                user.Id,
+                user.ToString());
+
+            if (action == AddRemove.Add)
+            {
+                if (success)
+                    await Response().Confirm(strs.stream_role_wl_add(Format.Bold(user.ToString()))).SendAsync();
+                else
+                    await Response().Confirm(strs.stream_role_wl_add_fail(Format.Bold(user.ToString()))).SendAsync();
+            }
+            else if (success)
+                await Response().Confirm(strs.stream_role_wl_rem(Format.Bold(user.ToString()))).SendAsync();
+            else
+                await Response().Error(strs.stream_role_wl_rem_fail(Format.Bold(user.ToString()))).SendAsync();
+        }
+    }
+}

src/EllieBot/Modules/Utility/StreamRole/StreamRoleService.cs

@@ -0,0 +1,339 @@
+using EllieBot.Common.ModuleBehaviors;
+using EllieBot.Db;
+using EllieBot.Modules.Utility.Common;
+using EllieBot.Modules.Utility.Common.Exceptions;
+using EllieBot.Db.Models;
+using System.Net;
+
+namespace EllieBot.Modules.Utility.Services;
+
+public class StreamRoleService : IReadyExecutor, IEService
+{
+    private readonly DbService _db;
+    private readonly DiscordSocketClient _client;
+    private readonly ConcurrentDictionary<ulong, StreamRoleSettings> _guildSettings;
+    private readonly QueueRunner _queueRunner;
+
+    public StreamRoleService(DiscordSocketClient client, DbService db, IBot bot)
+    {
+        _db = db;
+        _client = client;
+
+        _guildSettings = bot.AllGuildConfigs.ToDictionary(x => x.GuildId, x => x.StreamRole)
+                            .Where(x => x.Value is { Enabled: true })
+                            .ToConcurrent();
+
+        _client.PresenceUpdated += OnPresenceUpdate;
+
+        _queueRunner = new QueueRunner();
+    }
+
+    private Task OnPresenceUpdate(SocketUser user, SocketPresence? oldPresence, SocketPresence? newPresence)
+    {
+
+        _ = Task.Run(async () =>
+        {
+            if (oldPresence?.Activities?.Count != newPresence?.Activities?.Count)
+            {
+                var guildUsers = _client.Guilds
+                                        .Select(x => x.GetUser(user.Id))
+                                        .Where(x => x is not null);
+
+                foreach (var guildUser in guildUsers)
+                {
+                    if (_guildSettings.TryGetValue(guildUser.Guild.Id, out var s))
+                        await RescanUser(guildUser, s);
+                }
+            }
+        });
+
+        return Task.CompletedTask;
+    }
+
+    public Task OnReadyAsync()
+        => Task.WhenAll(_client.Guilds.Select(RescanUsers).WhenAll(), _queueRunner.RunAsync());
+
+    /// <summary>
+    ///     Adds or removes a user from a blacklist or a whitelist in the specified guild.
+    /// </summary>
+    /// <param name="listType">List type</param>
+    /// <param name="guild">Guild</param>
+    /// <param name="action">Add or rem action</param>
+    /// <param name="userId">User's Id</param>
+    /// <param name="userName">User's name</param>
+    /// <returns>Whether the operation was successful</returns>
+    public async Task<bool> ApplyListAction(
+        StreamRoleListType listType,
+        IGuild guild,
+        AddRemove action,
+        ulong userId,
+        string userName)
+    {
+        ArgumentNullException.ThrowIfNull(userName, nameof(userName));
+
+        var success = false;
+        await using (var uow = _db.GetDbContext())
+        {
+            var streamRoleSettings = uow.GetStreamRoleSettings(guild.Id);
+
+            if (listType == StreamRoleListType.Whitelist)
+            {
+                var userObj = new StreamRoleWhitelistedUser
+                {
+                    UserId = userId,
+                    Username = userName
+                };
+
+                if (action == AddRemove.Rem)
+                {
+                    var toDelete = streamRoleSettings.Whitelist.FirstOrDefault(x => x.Equals(userObj));
+                    if (toDelete is not null)
+                    {
+                        uow.Remove(toDelete);
+                        success = true;
+                    }
+                }
+                else
+                    success = streamRoleSettings.Whitelist.Add(userObj);
+            }
+            else
+            {
+                var userObj = new StreamRoleBlacklistedUser
+                {
+                    UserId = userId,
+                    Username = userName
+                };
+
+                if (action == AddRemove.Rem)
+                {
+                    var toRemove = streamRoleSettings.Blacklist.FirstOrDefault(x => x.Equals(userObj));
+                    if (toRemove is not null)
+                        success = streamRoleSettings.Blacklist.Remove(toRemove);
+                }
+                else
+                    success = streamRoleSettings.Blacklist.Add(userObj);
+            }
+
+            await uow.SaveChangesAsync();
+            UpdateCache(guild.Id, streamRoleSettings);
+        }
+
+        if (success)
+            await RescanUsers(guild);
+        return success;
+    }
+
+    /// <summary>
+    ///     Sets keyword on a guild and updates the cache.
+    /// </summary>
+    /// <param name="guild">Guild Id</param>
+    /// <param name="keyword">Keyword to set</param>
+    /// <returns>The keyword set</returns>
+    public async Task<string?> SetKeyword(IGuild guild, string? keyword)
+    {
+        keyword = keyword?.Trim().ToLowerInvariant();
+
+        await using (var uow = _db.GetDbContext())
+        {
+            var streamRoleSettings = uow.GetStreamRoleSettings(guild.Id);
+
+            streamRoleSettings.Keyword = keyword;
+            UpdateCache(guild.Id, streamRoleSettings);
+            await uow.SaveChangesAsync();
+        }
+
+        await RescanUsers(guild);
+        return keyword;
+    }
+
+    /// <summary>
+    ///     Gets the currently set keyword on a guild.
+    /// </summary>
+    /// <param name="guildId">Guild Id</param>
+    /// <returns>The keyword set</returns>
+    public string GetKeyword(ulong guildId)
+    {
+        if (_guildSettings.TryGetValue(guildId, out var outSetting))
+            return outSetting.Keyword;
+
+        StreamRoleSettings setting;
+        using (var uow = _db.GetDbContext())
+        {
+            setting = uow.GetStreamRoleSettings(guildId);
+        }
+
+        UpdateCache(guildId, setting);
+
+        return setting.Keyword;
+    }
+
+    /// <summary>
+    ///     Sets the role to monitor, and a role to which to add to
+    ///     the user who starts streaming in the monitored role.
+    /// </summary>
+    /// <param name="fromRole">Role to monitor</param>
+    /// <param name="addRole">Role to add to the user</param>
+    public async Task SetStreamRole(IRole fromRole, IRole addRole)
+    {
+        ArgumentNullException.ThrowIfNull(fromRole, nameof(fromRole));
+        ArgumentNullException.ThrowIfNull(addRole, nameof(addRole));
+
+        StreamRoleSettings setting;
+        await using (var uow = _db.GetDbContext())
+        {
+            var streamRoleSettings = uow.GetStreamRoleSettings(fromRole.Guild.Id);
+
+            streamRoleSettings.Enabled = true;
+            streamRoleSettings.AddRoleId = addRole.Id;
+            streamRoleSettings.FromRoleId = fromRole.Id;
+
+            setting = streamRoleSettings;
+            await uow.SaveChangesAsync();
+        }
+
+        UpdateCache(fromRole.Guild.Id, setting);
+
+        foreach (var usr in await fromRole.GetMembersAsync())
+        {
+            await RescanUser(usr, setting, addRole);
+        }
+    }
+
+    /// <summary>
+    ///     Stops the stream role feature on the specified guild.
+    /// </summary>
+    /// <param name="guild">Guild</param>
+    /// <param name="cleanup">Whether to rescan users</param>
+    public async Task StopStreamRole(IGuild guild, bool cleanup = false)
+    {
+        await using (var uow = _db.GetDbContext())
+        {
+            var streamRoleSettings = uow.GetStreamRoleSettings(guild.Id);
+            streamRoleSettings.Enabled = false;
+            streamRoleSettings.AddRoleId = 0;
+            streamRoleSettings.FromRoleId = 0;
+            await uow.SaveChangesAsync();
+        }
+
+        if (_guildSettings.TryRemove(guild.Id, out _) && cleanup)
+            await RescanUsers(guild);
+    }
+
+    private async ValueTask RescanUser(IGuildUser user, StreamRoleSettings setting, IRole? addRole = null)
+        => await _queueRunner.EnqueueAsync(() => RescanUserInternal(user, setting, addRole));
+
+    private async Task RescanUserInternal(IGuildUser user, StreamRoleSettings setting, IRole? addRole = null)
+    {
+        if (user.IsBot)
+            return;
+
+        var g = (StreamingGame?)user.Activities.FirstOrDefault(a
+            => a is StreamingGame
+               && (string.IsNullOrWhiteSpace(setting.Keyword)
+                   || a.Name.ToUpperInvariant().Contains(setting.Keyword.ToUpperInvariant())
+                   || setting.Whitelist.Any(x => x.UserId == user.Id)));
+
+        if (g is not null
+            && setting.Enabled
+            && setting.Blacklist.All(x => x.UserId != user.Id)
+            && user.RoleIds.Contains(setting.FromRoleId))
+        {
+            await _queueRunner.EnqueueAsync(async () =>
+            {
+                try
+                {
+                    addRole ??= user.Guild.GetRole(setting.AddRoleId);
+                    if (addRole is null)
+                    {
+                        await StopStreamRole(user.Guild);
+                        Log.Warning("Stream role in server {RoleId} no longer exists. Stopping", setting.AddRoleId);
+                        return;
+                    }
+
+                    //check if he doesn't have addrole already, to avoid errors
+                    if (!user.RoleIds.Contains(addRole.Id))
+                    {
+                        await user.AddRoleAsync(addRole);
+                        Log.Information("Added stream role to user {User} in {Server} server",
+                            user.ToString(),
+                            user.Guild.ToString());
+                    }
+                }
+                catch (HttpException ex) when (ex.HttpCode == HttpStatusCode.Forbidden)
+                {
+                    await StopStreamRole(user.Guild);
+                    Log.Warning(ex, "Error adding stream role(s). Forcibly disabling stream role feature");
+                    throw new StreamRolePermissionException();
+                }
+                catch (Exception ex)
+                {
+                    Log.Warning(ex, "Failed adding stream role");
+                }
+            });
+        }
+        else
+        {
+            //check if user is in the addrole
+            if (user.RoleIds.Contains(setting.AddRoleId))
+            {
+                await _queueRunner.EnqueueAsync(async () =>
+                {
+                    try
+                    {
+                        addRole ??= user.Guild.GetRole(setting.AddRoleId);
+                        if (addRole is null)
+                        {
+                            await StopStreamRole(user.Guild);
+                            Log.Warning(
+                                "Addrole doesn't exist in {GuildId} server. Forcibly disabling stream role feature",
+                                user.Guild.Id);
+                            return;
+                        }
+
+                        // need to check again in case queuer is taking too long to execute
+                        if (user.RoleIds.Contains(setting.AddRoleId))
+                        {
+                            await user.RemoveRoleAsync(addRole);
+                        }
+
+                        Log.Information("Removed stream role from the user {User} in {Server} server",
+                            user.ToString(),
+                            user.Guild.ToString());
+                    }
+                    catch (HttpException ex)
+                    {
+                        if (ex.HttpCode == HttpStatusCode.Forbidden)
+                        {
+                            await StopStreamRole(user.Guild);
+                            Log.Warning(ex, "Error removing stream role(s). Forcibly disabling stream role feature");
+                        }
+                    }
+                });
+            }
+        }
+    }
+
+    private async Task RescanUsers(IGuild guild)
+    {
+        if (!_guildSettings.TryGetValue(guild.Id, out var setting))
+            return;
+
+        var addRole = guild.GetRole(setting.AddRoleId);
+        if (addRole is null)
+            return;
+
+        if (setting.Enabled)
+        {
+            var users = await guild.GetUsersAsync(CacheMode.CacheOnly);
+            foreach (var usr in users.Where(x
+                         => x.RoleIds.Contains(setting.FromRoleId) || x.RoleIds.Contains(addRole.Id)))
+            {
+                if (usr is { } x)
+                    await RescanUser(x, setting, addRole);
+            }
+        }
+    }
+
+    private void UpdateCache(ulong guildId, StreamRoleSettings setting)
+        => _guildSettings.AddOrUpdate(guildId, _ => setting, (_, _) => setting);
+}

src/EllieBot/Modules/Utility/Todo/ArchiveTodoResult.cs

@@ -0,0 +1,8 @@
+namespace EllieBot.Modules.Utility;
+
+public enum ArchiveTodoResult
+{
+    MaxLimitReached,
+    NoTodos,
+    Success
+}

src/EllieBot/Modules/Utility/Todo/TodoAddResult.cs

@@ -0,0 +1,7 @@
+namespace EllieBot.Modules.Utility;
+
+public enum TodoAddResult
+{
+    MaxLimitReached,
+    Success
+}

src/EllieBot/Modules/Utility/Todo/TodoCommands.cs

@@ -0,0 +1,237 @@
+using EllieBot.Db.Models;
+using System.Text;
+
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility
+{
+    [Group("todo")]
+    public partial class Todo : EllieModule<TodoService>
+    {
+        [Cmd]
+        public async Task TodoAdd([Leftover] string todo)
+        {
+            var result = await _service.AddAsync(ctx.User.Id, todo);
+            if (result == TodoAddResult.MaxLimitReached)
+            {
+                await Response().Error(strs.todo_add_max_limit).SendAsync();
+                return;
+            }
+
+            await ctx.OkAsync();
+        }
+
+        [Cmd]
+        public async Task TodoEdit(kwum todoId, [Leftover] string newMessage)
+        {
+            if (!await _service.EditAsync(ctx.User.Id, todoId, newMessage))
+            {
+                await Response().Error(strs.todo_not_found).SendAsync();
+                return;
+            }
+
+            await ctx.OkAsync();
+        }
+
+        [Cmd]
+        public async Task TodoList()
+        {
+            var todos = await _service.GetAllTodosAsync(ctx.User.Id);
+
+            if (todos.Length == 0)
+            {
+                await Response().Error(strs.todo_list_empty).SendAsync();
+                return;
+            }
+
+            await Response()
+                  .Paginated()
+                  .Items(todos)
+                  .PageSize(9)
+                  .AddFooter(false)
+                  .Page((items, _) =>
+                  {
+                      var eb = _sender.CreateEmbed()
+                                      .WithOkColor()
+                                      .WithTitle(GetText(strs.todo_list));
+
+                      ShowTodoItem(items, eb);
+
+                      eb.WithFooter(GetText(strs.todo_stats(todos.Length,
+                          todos.Count(x => x.IsDone),
+                          todos.Count(x => !x.IsDone))));
+
+                      return eb;
+                  })
+                  .SendAsync();
+        }
+
+        [Cmd]
+        public async Task TodoShow(kwum todoId)
+        {
+            var todo = await _service.GetTodoAsync(ctx.User.Id, todoId);
+
+            if (todo is null)
+            {
+                await Response().Error(strs.todo_not_found).SendAsync();
+                return;
+            }
+
+            await Response()
+                  .Confirm($"`{new kwum(todo.Id)}` {todo.Todo}")
+                  .SendAsync();
+        }
+
+
+        [Cmd]
+        public async Task TodoComplete(kwum todoId)
+        {
+            if (!await _service.CompleteTodoAsync(ctx.User.Id, todoId))
+            {
+                await Response().Error(strs.todo_not_found).SendAsync();
+                return;
+            }
+
+            await ctx.OkAsync();
+        }
+
+        [Cmd]
+        public async Task TodoDelete(kwum todoId)
+        {
+            if (!await _service.DeleteTodoAsync(ctx.User.Id, todoId))
+            {
+                await Response().Error(strs.todo_not_found).SendAsync();
+                return;
+            }
+
+            await ctx.OkAsync();
+        }
+
+        [Cmd]
+        public async Task TodoClear()
+        {
+            await _service.ClearTodosAsync(ctx.User.Id);
+
+            await Response().Confirm(strs.todo_cleared).SendAsync();
+        }
+
+
+        private static void ShowTodoItem(IReadOnlyCollection<TodoModel> todos, EmbedBuilder eb)
+        {
+            var sb = new StringBuilder();
+            foreach (var todo in todos)
+            {
+                sb.AppendLine(InternalItemShow(todo));
+
+                sb.AppendLine("---");
+            }
+
+            eb.WithDescription(sb.ToString());
+        }
+
+        private static string InternalItemShow(TodoModel todo)
+            => $"{(todo.IsDone ? "✔" : "□")} {Format.Code(new kwum(todo.Id).ToString())} {todo.Todo}";
+
+        [Group("archive")]
+        public partial class ArchiveCommands : EllieModule<TodoService>
+        {
+            [Cmd]
+            public async Task TodoArchiveAdd([Leftover] string name)
+            {
+                var result = await _service.ArchiveTodosAsync(ctx.User.Id, name);
+                if (result == ArchiveTodoResult.NoTodos)
+                {
+                    await Response().Error(strs.todo_no_todos).SendAsync();
+                    return;
+                }
+
+                if (result == ArchiveTodoResult.MaxLimitReached)
+                {
+                    await Response().Error(strs.todo_archive_max_limit).SendAsync();
+                    return;
+                }
+
+                await ctx.OkAsync();
+            }
+
+            [Cmd]
+            public async Task TodoArchiveList(int page = 1)
+            {
+                if (--page < 0)
+                    return;
+
+                var archivedTodoLists = await _service.GetArchivedTodosAsync(ctx.User.Id);
+
+                if (archivedTodoLists.Count == 0)
+                {
+                    await Response().Error(strs.todo_archive_empty).SendAsync();
+                    return;
+                }
+
+                await Response()
+                      .Paginated()
+                      .Items(archivedTodoLists)
+                      .PageSize(9)
+                      .CurrentPage(page)
+                      .Page((items, _) =>
+                      {
+                          var eb = _sender.CreateEmbed()
+                                          .WithTitle(GetText(strs.todo_archive_list))
+                                          .WithOkColor();
+
+                          foreach (var archivedList in items)
+                          {
+                              eb.AddField($"id: {archivedList.Id.ToString()}", archivedList.Name, true);
+                          }
+
+                          return eb;
+                      })
+                      .SendAsync();
+            }
+
+            [Cmd]
+            public async Task TodoArchiveShow(int id)
+            {
+                var list = await _service.GetArchivedTodoListAsync(ctx.User.Id, id);
+                if (list == null || list.Items.Count == 0)
+                {
+                    await Response().Error(strs.todo_archive_not_found).SendAsync();
+                    return;
+                }
+
+                await Response()
+                      .Paginated()
+                      .Items(list.Items)
+                      .PageSize(9)
+                      .AddFooter(false)
+                      .Page((items, _) =>
+                      {
+                          var eb = _sender.CreateEmbed()
+                                          .WithOkColor()
+                                          .WithTitle(GetText(strs.todo_archived_list));
+
+                          ShowTodoItem(items, eb);
+
+                          eb.WithFooter(GetText(strs.todo_stats(list.Items.Count,
+                              list.Items.Count(x => x.IsDone),
+                              list.Items.Count(x => !x.IsDone))));
+
+                          return eb;
+                      })
+                      .SendAsync();
+            }
+
+            [Cmd]
+            public async Task TodoArchiveDelete(int id)
+            {
+                if (!await _service.ArchiveDeleteAsync(ctx.User.Id, id))
+                {
+                    await ctx.ErrorAsync();
+                    return;
+                }
+
+                await ctx.OkAsync();
+            }
+        }
+    }
+}

src/EllieBot/Modules/Utility/Todo/TodoService.cs

@@ -0,0 +1,192 @@
+using LinqToDB;
+using LinqToDB.EntityFrameworkCore;
+using EllieBot.Db.Models;
+
+namespace EllieBot.Modules.Utility;
+
+public sealed class TodoService : IEService
+{
+    private const int ARCHIVE_MAX_COUNT = 9;
+    private const int TODO_MAX_COUNT = 27;
+
+    private readonly DbService _db;
+
+    public TodoService(DbService db)
+    {
+        _db = db;
+    }
+
+    public async Task<TodoAddResult> AddAsync(ulong userId, string todo)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        if (await ctx
+                .GetTable<TodoModel>()
+                .Where(x => x.UserId == userId && x.ArchiveId == null)
+                .CountAsync() >= TODO_MAX_COUNT)
+        {
+            return TodoAddResult.MaxLimitReached;
+        }
+
+        await ctx
+            .GetTable<TodoModel>()
+            .InsertAsync(() => new TodoModel()
+            {
+                UserId = userId,
+                Todo = todo,
+                DateAdded = DateTime.UtcNow,
+                IsDone = false,
+            });
+
+        return TodoAddResult.Success;
+    }
+
+    public async Task<bool> EditAsync(ulong userId, int todoId, string newMessage)
+    {
+        await using var ctx = _db.GetDbContext();
+        return await ctx
+            .GetTable<TodoModel>()
+            .Where(x => x.UserId == userId && x.Id == todoId)
+            .Set(x => x.Todo, newMessage)
+            .UpdateAsync() > 0;
+    }
+
+    public async Task<TodoModel[]> GetAllTodosAsync(ulong userId)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        return await ctx
+            .GetTable<TodoModel>()
+            .Where(x => x.UserId == userId && x.ArchiveId == null)
+            .ToArrayAsyncLinqToDB();
+    }
+
+    public async Task<bool> CompleteTodoAsync(ulong userId, int todoId)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        var count = await ctx
+            .GetTable<TodoModel>()
+            .Where(x => x.UserId == userId && x.Id == todoId)
+            .Set(x => x.IsDone, true)
+            .UpdateAsync();
+
+        return count > 0;
+    }
+
+    public async Task<bool> DeleteTodoAsync(ulong userId, int todoId)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        var count = await ctx
+            .GetTable<TodoModel>()
+            .Where(x => x.UserId == userId && x.Id == todoId)
+            .DeleteAsync();
+
+        return count > 0;
+    }
+
+    public async Task ClearTodosAsync(ulong userId)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        await ctx
+            .GetTable<TodoModel>()
+            .Where(x => x.UserId == userId && x.ArchiveId == null)
+            .DeleteAsync();
+    }
+
+    public async Task<ArchiveTodoResult> ArchiveTodosAsync(ulong userId, string name)
+    {
+        // create a new archive
+
+        await using var ctx = _db.GetDbContext();
+
+        await using var tr = await ctx.Database.BeginTransactionAsync();
+
+        // check if the user reached the limit
+        var count = await ctx
+            .GetTable<ArchivedTodoListModel>()
+            .Where(x => x.UserId == userId)
+            .CountAsync();
+
+        if (count >= ARCHIVE_MAX_COUNT)
+            return ArchiveTodoResult.MaxLimitReached;
+
+        var inserted = await ctx
+            .GetTable<ArchivedTodoListModel>()
+            .InsertWithOutputAsync(() => new ArchivedTodoListModel()
+            {
+                UserId = userId,
+                Name = name,
+            });
+
+        // mark all existing todos as archived
+
+        var updated = await ctx
+            .GetTable<TodoModel>()
+            .Where(x => x.UserId == userId && x.ArchiveId == null)
+            .Set(x => x.ArchiveId, inserted.Id)
+            .UpdateAsync();
+
+        if (updated == 0)
+        {
+            await tr.RollbackAsync();
+            // // delete the empty archive
+            // await ctx
+            //     .GetTable<ArchivedTodoListModel>()
+            //     .Where(x => x.Id == inserted.Id)
+            //     .DeleteAsync();
+
+            return ArchiveTodoResult.NoTodos;
+        }
+
+        await tr.CommitAsync();
+
+        return ArchiveTodoResult.Success;
+    }
+
+
+    public async Task<IReadOnlyCollection<ArchivedTodoListModel>> GetArchivedTodosAsync(ulong userId)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        return await ctx
+            .GetTable<ArchivedTodoListModel>()
+            .Where(x => x.UserId == userId)
+            .ToArrayAsyncLinqToDB();
+    }
+
+    public async Task<ArchivedTodoListModel?> GetArchivedTodoListAsync(ulong userId, int archiveId)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        return await ctx
+            .GetTable<ArchivedTodoListModel>()
+            .Where(x => x.UserId == userId && x.Id == archiveId)
+            .LoadWith(x => x.Items)
+            .FirstOrDefaultAsyncLinqToDB();
+    }
+
+    public async Task<bool> ArchiveDeleteAsync(ulong userId, int archiveId)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        var count = await ctx
+            .GetTable<ArchivedTodoListModel>()
+            .Where(x => x.UserId == userId && x.Id == archiveId)
+            .DeleteAsync();
+
+        return count > 0;
+    }
+
+    public async Task<TodoModel?> GetTodoAsync(ulong userId, int todoId)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        return await ctx
+            .GetTable<TodoModel>()
+            .Where(x => x.UserId == userId && x.Id == todoId)
+            .FirstOrDefaultAsyncLinqToDB();
+    }
+}

src/EllieBot/Modules/Utility/UnitConversion/ConverterService.cs

@@ -0,0 +1,99 @@
+#nullable disable
+using EllieBot.Common.ModuleBehaviors;
+using EllieBot.Modules.Utility.Common;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace EllieBot.Modules.Utility.Services;
+
+public class ConverterService : IEService, IReadyExecutor
+{
+    private static readonly TypedKey<List<ConvertUnit>> _convertKey =
+        new("convert:units");
+
+    private readonly TimeSpan _updateInterval = new(12, 0, 0);
+    private readonly DiscordSocketClient _client;
+    private readonly IBotCache _cache;
+    private readonly IHttpClientFactory _httpFactory;
+
+    public ConverterService(
+        DiscordSocketClient client,
+        IBotCache cache,
+        IHttpClientFactory factory)
+    {
+        _client = client;
+        _cache = cache;
+        _httpFactory = factory;
+    }
+
+    public async Task OnReadyAsync()
+    {
+        if (_client.ShardId != 0)
+            return;
+
+        using var timer = new PeriodicTimer(_updateInterval);
+        do
+        {
+            try
+            {
+                await UpdateCurrency();
+            }
+            catch
+            {
+                // ignored
+            }
+        } while (await timer.WaitForNextTickAsync());
+    }
+
+    private async Task<Rates> GetCurrencyRates()
+    {
+        using var http = _httpFactory.CreateClient();
+        var res = await http.GetStringAsync("https://convertapi.nadeko.bot/latest");
+        return JsonSerializer.Deserialize<Rates>(res);
+    }
+
+    private async Task UpdateCurrency()
+    {
+        var unitTypeString = "currency";
+        var currencyRates = await GetCurrencyRates();
+        var baseType = new ConvertUnit
+        {
+            Triggers = [currencyRates.Base],
+            Modifier = decimal.One,
+            UnitType = unitTypeString
+        };
+        var units = currencyRates.ConversionRates.Select(u => new ConvertUnit
+        {
+            Triggers = [u.Key],
+            Modifier = u.Value,
+            UnitType = unitTypeString
+        })
+                                 .ToList();
+
+        var stream = File.OpenRead("data/units.json");
+        var defaultUnits = await JsonSerializer.DeserializeAsync<ConvertUnit[]>(stream);
+        if (defaultUnits is not null)
+            units.AddRange(defaultUnits);
+
+        units.Add(baseType);
+
+        await _cache.AddAsync(_convertKey, units);
+    }
+
+    public async Task<IReadOnlyList<ConvertUnit>> GetUnitsAsync()
+        => (await _cache.GetAsync(_convertKey)).TryGetValue(out var list)
+            ? list
+            : Array.Empty<ConvertUnit>();
+}
+
+public class Rates
+{
+    [JsonPropertyName("base")]
+    public string Base { get; set; }
+
+    [JsonPropertyName("date")]
+    public DateTime Date { get; set; }
+
+    [JsonPropertyName("rates")]
+    public Dictionary<string, decimal> ConversionRates { get; set; }
+}

src/EllieBot/Modules/Utility/UnitConversion/UnitConversionCommands.cs

@@ -0,0 +1,100 @@
+#nullable disable
+using EllieBot.Modules.Utility.Services;
+
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility
+{
+    [Group]
+    public partial class UnitConverterCommands : EllieModule<ConverterService>
+    {
+        [Cmd]
+        public async Task ConvertList()
+        {
+            var units = await _service.GetUnitsAsync();
+
+            var embed = _sender.CreateEmbed().WithTitle(GetText(strs.convertlist)).WithOkColor();
+
+
+            foreach (var g in units.GroupBy(x => x.UnitType))
+            {
+                embed.AddField(g.Key.ToTitleCase(),
+                    string.Join(", ", g.Select(x => x.Triggers.FirstOrDefault()).OrderBy(x => x)));
+            }
+
+            await Response().Embed(embed).SendAsync();
+        }
+
+        [Cmd]
+        [Priority(0)]
+        public async Task Convert(string origin, string target, decimal value)
+        {
+            var units = await _service.GetUnitsAsync();
+            var originUnit = units.FirstOrDefault(x
+                => x.Triggers.Select(y => y.ToUpperInvariant()).Contains(origin.ToUpperInvariant()));
+            var targetUnit = units.FirstOrDefault(x
+                => x.Triggers.Select(y => y.ToUpperInvariant()).Contains(target.ToUpperInvariant()));
+            if (originUnit is null || targetUnit is null)
+            {
+                await Response().Error(strs.convert_not_found(Format.Bold(origin), Format.Bold(target))).SendAsync();
+                return;
+            }
+
+            if (originUnit.UnitType != targetUnit.UnitType)
+            {
+                await Response()
+                      .Error(strs.convert_type_error(Format.Bold(originUnit.Triggers.First()),
+                          Format.Bold(targetUnit.Triggers.First())))
+                      .SendAsync();
+                return;
+            }
+
+            decimal res;
+            if (originUnit.Triggers == targetUnit.Triggers)
+                res = value;
+            else if (originUnit.UnitType == "temperature")
+            {
+                //don't really care too much about efficiency, so just convert to Kelvin, then to target
+                switch (originUnit.Triggers.First().ToUpperInvariant())
+                {
+                    case "C":
+                        res = value + 273.15m; //celcius!
+                        break;
+                    case "F":
+                        res = (value + 459.67m) * (5m / 9m);
+                        break;
+                    default:
+                        res = value;
+                        break;
+                }
+
+                //from Kelvin to target
+                switch (targetUnit.Triggers.First().ToUpperInvariant())
+                {
+                    case "C":
+                        res -= 273.15m; //celcius!
+                        break;
+                    case "F":
+                        res = (res * (9m / 5m)) - 459.67m;
+                        break;
+                }
+            }
+            else
+            {
+                if (originUnit.UnitType == "currency")
+                    res = value * targetUnit.Modifier / originUnit.Modifier;
+                else
+                    res = value * originUnit.Modifier / targetUnit.Modifier;
+            }
+
+            res = Math.Round(res, 4);
+
+            await Response()
+                  .Confirm(strs.convert(value,
+                      originUnit.Triggers.Last(),
+                      res,
+                      targetUnit.Triggers.Last()))
+                  .SendAsync();
+        }
+    }
+}

src/EllieBot/Modules/Utility/Utility.cs

@@ -0,0 +1,727 @@
+#nullable disable
+using EllieBot.Modules.Utility.Services;
+using Newtonsoft.Json;
+using System.Diagnostics;
+using System.Text;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using Microsoft.CodeAnalysis.CSharp.Scripting;
+using Microsoft.CodeAnalysis.Scripting;
+using EllieBot.Modules.Searches.Common;
+
+namespace EllieBot.Modules.Utility;
+
+public partial class Utility : EllieModule
+{
+    public enum CreateInviteType
+    {
+        Any,
+        New
+    }
+
+    public enum MeOrBot
+    {
+        Me,
+        Bot
+    }
+
+    private static readonly JsonSerializerOptions _showEmbedSerializerOptions = new()
+    {
+        WriteIndented = true,
+        DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
+        PropertyNamingPolicy = LowerCaseNamingPolicy.Default
+    };
+
+    private static SemaphoreSlim sem = new(1, 1);
+    private readonly DiscordSocketClient _client;
+    private readonly ICoordinator _coord;
+    private readonly IStatsService _stats;
+    private readonly IBotCredentials _creds;
+    private readonly DownloadTracker _tracker;
+    private readonly IHttpClientFactory _httpFactory;
+    private readonly VerboseErrorsService _veService;
+    private readonly IServiceProvider _services;
+
+    public Utility(
+        DiscordSocketClient client,
+        ICoordinator coord,
+        IStatsService stats,
+        IBotCredentials creds,
+        DownloadTracker tracker,
+        IHttpClientFactory httpFactory,
+        VerboseErrorsService veService,
+        IServiceProvider services)
+    {
+        _client = client;
+        _coord = coord;
+        _stats = stats;
+        _creds = creds;
+        _tracker = tracker;
+        _httpFactory = httpFactory;
+        _veService = veService;
+        _services = services;
+    }
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    [UserPerm(GuildPerm.ManageMessages)]
+    [Priority(1)]
+    public async Task Say(ITextChannel channel, [Leftover] SmartText message)
+    {
+        if (!((IGuildUser)ctx.User).GetPermissions(channel).SendMessages)
+        {
+            await Response().Error(strs.insuf_perms_u).SendAsync();
+            return;
+        }
+
+        if (!((ctx.Guild as SocketGuild)?.CurrentUser.GetPermissions(channel).SendMessages ?? false))
+        {
+            await Response().Error(strs.insuf_perms_i).SendAsync();
+            return;
+        }
+
+        var repCtx = new ReplacementContext(Context);
+        message = await repSvc.ReplaceAsync(message, repCtx);
+
+        await Response()
+              .Text(message)
+              .Channel(channel)
+              .UserBasedMentions()
+              .SendAsync();
+    }
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    [UserPerm(GuildPerm.ManageMessages)]
+    [Priority(0)]
+    public Task Say([Leftover] SmartText message)
+        => Say((ITextChannel)ctx.Channel, message);
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    public async Task WhosPlaying([Leftover] string game)
+    {
+        game = game?.Trim().ToUpperInvariant();
+        if (string.IsNullOrWhiteSpace(game))
+            return;
+
+        if (ctx.Guild is not SocketGuild socketGuild)
+        {
+            Log.Warning("Can't cast guild to socket guild");
+            return;
+        }
+
+        var rng = new EllieRandom();
+        var arr = await Task.Run(() => socketGuild.Users
+                                                  .Where(u => u.Activities.FirstOrDefault()
+                                                               ?.Name?.Trim()
+                                                               .ToUpperInvariant()
+                                                              == game)
+                                                  .Select(u => u.Username)
+                                                  .OrderBy(_ => rng.Next())
+                                                  .Take(60)
+                                                  .ToArray());
+
+        var i = 0;
+        if (arr.Length == 0)
+            await Response().Error(strs.nobody_playing_game).SendAsync();
+        else
+        {
+            await Response()
+                  .Confirm("```css\n"
+                           + string.Join("\n",
+                               arr.GroupBy(_ => i++ / 2)
+                                  .Select(ig => string.Concat(ig.Select(el => $"• {el,-27}"))))
+                           + "\n```")
+                  .SendAsync();
+        }
+    }
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    [Priority(0)]
+    public async Task InRole(int page, [Leftover] IRole role = null)
+    {
+        if (--page < 0)
+            return;
+
+        await ctx.Channel.TriggerTypingAsync();
+        await _tracker.EnsureUsersDownloadedAsync(ctx.Guild);
+
+        var users = await ctx.Guild.GetUsersAsync(
+            CacheMode.CacheOnly
+        );
+
+        var roleUsers = users.Where(u => role is null ? u.RoleIds.Count == 1 : u.RoleIds.Contains(role.Id))
+                             .Select(u => $"{u.Mention} {Format.Spoiler(Format.Code(u.Username))}")
+                             .ToArray();
+
+        await Response()
+              .Paginated()
+              .Items(roleUsers)
+              .PageSize(20)
+              .CurrentPage(page)
+              .Page((pageUsers, _) =>
+              {
+                  if (pageUsers.Count == 0)
+                      return _sender.CreateEmbed().WithOkColor().WithDescription(GetText(strs.no_user_on_this_page));
+
+                  return _sender.CreateEmbed()
+                                .WithOkColor()
+                                .WithTitle(GetText(strs.inrole_list(Format.Bold(role?.Name ?? "No Role"),
+                                    roleUsers.Length)))
+                                .WithDescription(string.Join("\n", pageUsers));
+              })
+              .SendAsync();
+    }
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    [Priority(1)]
+    public Task InRole([Leftover] IRole role = null)
+        => InRole(1, role);
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    public async Task CheckPerms(MeOrBot who = MeOrBot.Me)
+    {
+        var user = who == MeOrBot.Me ? (IGuildUser)ctx.User : ((SocketGuild)ctx.Guild).CurrentUser;
+        var perms = user.GetPermissions((ITextChannel)ctx.Channel);
+        await SendPerms(perms);
+    }
+
+    private async Task SendPerms(ChannelPermissions perms)
+    {
+        var builder = new StringBuilder();
+        foreach (var p in perms.GetType()
+                               .GetProperties()
+                               .Where(static p =>
+                               {
+                                   var method = p.GetGetMethod();
+                                   if (method is null)
+                                       return false;
+                                   return !method.GetParameters().Any();
+                               }))
+            builder.AppendLine($"{p.Name} : {p.GetValue(perms, null)}");
+        await Response().Confirm(builder.ToString()).SendAsync();
+    }
+
+    // [Cmd]
+    // [RequireContext(ContextType.Guild)]
+    // [RequireUserPermission(GuildPermission.ManageRoles)]
+    // public async Task CheckPerms(SocketRole role, string perm = null)
+    // {
+    //     ChannelPermissions.
+    //     var perms = ((ITextChannel)ctx.Channel);
+    //     await SendPerms(perms)
+    // }
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    public async Task UserId([Leftover] IGuildUser target = null)
+    {
+        var usr = target ?? ctx.User;
+        await Response()
+              .Confirm(strs.userid("🆔",
+                  Format.Bold(usr.ToString()),
+                  Format.Code(usr.Id.ToString())))
+              .SendAsync();
+    }
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    public async Task RoleId([Leftover] IRole role)
+        => await Response()
+                 .Confirm(strs.roleid("🆔",
+                     Format.Bold(role.ToString()),
+                     Format.Code(role.Id.ToString())))
+                 .SendAsync();
+
+    [Cmd]
+    public async Task ChannelId()
+        => await Response().Confirm(strs.channelid("🆔", Format.Code(ctx.Channel.Id.ToString()))).SendAsync();
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    public async Task ServerId()
+        => await Response().Confirm(strs.serverid("🆔", Format.Code(ctx.Guild.Id.ToString()))).SendAsync();
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    public async Task Roles(IGuildUser target, int page = 1)
+    {
+        var guild = ctx.Guild;
+
+        const int rolesPerPage = 20;
+
+        if (page is < 1 or > 100)
+            return;
+
+        if (target is not null)
+        {
+            var roles = target.GetRoles()
+                              .Except(new[] { guild.EveryoneRole })
+                              .OrderBy(r => -r.Position)
+                              .Skip((page - 1) * rolesPerPage)
+                              .Take(rolesPerPage)
+                              .ToArray();
+            if (!roles.Any())
+                await Response().Error(strs.no_roles_on_page).SendAsync();
+            else
+            {
+                await Response()
+                      .Confirm(GetText(strs.roles_page(page, Format.Bold(target.ToString()))),
+                          "\n• " + string.Join("\n• ", (IEnumerable<IRole>)roles))
+                      .SendAsync();
+            }
+        }
+        else
+        {
+            var roles = guild.Roles.Except(new[] { guild.EveryoneRole })
+                             .OrderBy(r => -r.Position)
+                             .Skip((page - 1) * rolesPerPage)
+                             .Take(rolesPerPage)
+                             .ToArray();
+            if (!roles.Any())
+                await Response().Error(strs.no_roles_on_page).SendAsync();
+            else
+            {
+                await Response()
+                      .Confirm(GetText(strs.roles_all_page(page)),
+                          "\n• " + string.Join("\n• ", (IEnumerable<IRole>)roles).SanitizeMentions(true))
+                      .SendAsync();
+            }
+        }
+    }
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    public Task Roles(int page = 1)
+        => Roles(null, page);
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    public async Task ChannelTopic([Leftover] ITextChannel channel = null)
+    {
+        if (channel is null)
+            channel = (ITextChannel)ctx.Channel;
+
+        var topic = channel.Topic;
+        if (string.IsNullOrWhiteSpace(topic))
+            await Response().Error(strs.no_topic_set).SendAsync();
+        else
+            await Response().Confirm(GetText(strs.channel_topic), topic).SendAsync();
+    }
+
+    [Cmd]
+    public async Task Stats()
+    {
+        var ownerIds = string.Join("\n", _creds.OwnerIds);
+        if (string.IsNullOrWhiteSpace(ownerIds))
+            ownerIds = "-";
+
+        await Response()
+              .Embed(_sender.CreateEmbed()
+                            .WithOkColor()
+                            .WithAuthor($"EllieBot v{StatsService.BotVersion}",
+                                "https://cdn.elliebot.net/Ellie.png",
+                                "https://docs.elliebot.net/")
+                            .AddField(GetText(strs.author), _stats.Author, true)
+                            .AddField(GetText(strs.botid), _client.CurrentUser.Id.ToString(), true)
+                            .AddField(GetText(strs.shard),
+                                $"#{_client.ShardId} / {_creds.TotalShards}",
+                                true)
+                            .AddField(GetText(strs.commands_ran), _stats.CommandsRan.ToString(), true)
+                            .AddField(GetText(strs.messages),
+                                $"{_stats.MessageCounter} ({_stats.MessagesPerSecond:F2}/sec)",
+                                true)
+                            .AddField(GetText(strs.memory),
+                                FormattableString.Invariant($"{_stats.GetPrivateMemoryMegabytes():F2} MB"),
+                                true)
+                            .AddField(GetText(strs.owner_ids), ownerIds, true)
+                            .AddField(GetText(strs.uptime), _stats.GetUptimeString("\n"), true)
+                            .AddField(GetText(strs.presence),
+                                GetText(strs.presence_txt(_coord.GetGuildCount(),
+                                    _stats.TextChannels,
+                                    _stats.VoiceChannels)),
+                                true))
+              .SendAsync();
+    }
+
+    [Cmd]
+    public async Task Showemojis([Leftover] string _)
+    {
+        var tags = ctx.Message.Tags.Where(t => t.Type == TagType.Emoji).Select(t => (Emote)t.Value);
+
+        var result = string.Join("\n", tags.Select(m => GetText(strs.showemojis(m, m.Url))));
+
+        if (string.IsNullOrWhiteSpace(result))
+            await Response().Error(strs.showemojis_none).SendAsync();
+        else
+            await Response().Text(result.TrimTo(2000)).SendAsync();
+    }
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    [BotPerm(GuildPerm.ManageEmojisAndStickers)]
+    [UserPerm(GuildPerm.ManageEmojisAndStickers)]
+    [Priority(2)]
+    public Task EmojiAdd(string name, Emote emote)
+        => EmojiAdd(name, emote.Url);
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    [BotPerm(GuildPerm.ManageEmojisAndStickers)]
+    [UserPerm(GuildPerm.ManageEmojisAndStickers)]
+    [Priority(1)]
+    public Task EmojiAdd(Emote emote)
+        => EmojiAdd(emote.Name, emote.Url);
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    [BotPerm(GuildPerm.ManageEmojisAndStickers)]
+    [UserPerm(GuildPerm.ManageEmojisAndStickers)]
+    [Priority(0)]
+    public async Task EmojiAdd(string name, string url = null)
+    {
+        name = name.Trim(':');
+
+        url ??= ctx.Message.Attachments.FirstOrDefault()?.Url;
+
+        if (url is null)
+            return;
+
+        using var http = _httpFactory.CreateClient();
+        using var res = await http.GetAsync(url, HttpCompletionOption.ResponseHeadersRead);
+        if (!res.IsImage() || res.GetContentLength() > 262_144)
+        {
+            await Response().Error(strs.invalid_emoji_link).SendAsync();
+            return;
+        }
+
+        await using var imgStream = await res.Content.ReadAsStreamAsync();
+        Emote em;
+        try
+        {
+            em = await ctx.Guild.CreateEmoteAsync(name, new(imgStream));
+        }
+        catch (Exception ex)
+        {
+            Log.Warning(ex, "Error adding emoji on server {GuildId}", ctx.Guild.Id);
+
+            await Response().Error(strs.emoji_add_error).SendAsync();
+            return;
+        }
+
+        await Response().Confirm(strs.emoji_added(em.ToString())).SendAsync();
+    }
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    [BotPerm(GuildPerm.ManageEmojisAndStickers)]
+    [UserPerm(GuildPerm.ManageEmojisAndStickers)]
+    [Priority(0)]
+    public async Task EmojiRemove(params Emote[] emotes)
+    {
+        if (emotes.Length == 0)
+            return;
+
+        var g = (SocketGuild)ctx.Guild;
+
+        var fails = new List<Emote>();
+        foreach (var emote in emotes)
+        {
+            var guildEmote = g.Emotes.FirstOrDefault(x => x.Id == emote.Id);
+            if (guildEmote is null)
+            {
+                fails.Add(emote);
+            }
+            else
+            {
+                await ctx.Guild.DeleteEmoteAsync(guildEmote);
+            }
+        }
+
+        if (fails.Count > 0)
+        {
+            await Response().Pending(strs.emoji_not_removed(fails.Select(x => x.ToString()).Join(" "))).SendAsync();
+            return;
+        }
+
+        await ctx.OkAsync();
+    }
+
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    [BotPerm(GuildPerm.ManageEmojisAndStickers)]
+    [UserPerm(GuildPerm.ManageEmojisAndStickers)]
+    public async Task StickerAdd(string name = null, string description = null, params string[] tags)
+    {
+        string format;
+        Stream stream;
+
+        if (ctx.Message.Stickers.Count is 1 && ctx.Message.Stickers.First() is SocketSticker ss)
+        {
+            name ??= ss.Name;
+            description = ss.Description;
+            tags = tags is null or { Length: 0 } ? ss.Tags.ToArray() : tags;
+            format = FormatToExtension(ss.Format);
+
+            using var http = _httpFactory.CreateClient();
+            stream = await http.GetStreamAsync(ss.GetStickerUrl());
+        }
+        else
+        {
+            await Response().Error(strs.sticker_error).SendAsync();
+            return;
+        }
+
+        try
+        {
+            if (tags.Length == 0)
+                tags = [name];
+
+            await ctx.Guild.CreateStickerAsync(
+                name,
+                stream,
+                $"{name}.{format}",
+                tags,
+                string.IsNullOrWhiteSpace(description) ? "Missing description" : description
+            );
+
+            await ctx.OkAsync();
+        }
+        catch (Exception ex)
+        {
+            Log.Warning(ex, "Error occurred while adding a sticker: {Message}", ex.Message);
+            await Response().Error(strs.error_occured).SendAsync();
+        }
+        finally
+        {
+            await stream.DisposeAsync();
+        }
+    }
+
+    private static string FormatToExtension(StickerFormatType format)
+    {
+        switch (format)
+        {
+            case StickerFormatType.None:
+            case StickerFormatType.Png:
+            case StickerFormatType.Apng:
+                return "png";
+            case StickerFormatType.Lottie:
+                return "lottie";
+            default:
+                throw new ArgumentException(nameof(format));
+        }
+    }
+
+    [Cmd]
+    [OwnerOnly]
+    public async Task ListServers(int page = 1)
+    {
+        page -= 1;
+
+        if (page < 0)
+            return;
+
+        var guilds = _client.Guilds.OrderBy(g => g.Name)
+                            .Skip(page * 15)
+                            .Take(15)
+                            .ToList();
+
+        if (!guilds.Any())
+        {
+            await Response().Error(strs.listservers_none).SendAsync();
+            return;
+        }
+
+        var embed = _sender.CreateEmbed().WithOkColor();
+        foreach (var guild in guilds)
+            embed.AddField(guild.Name, GetText(strs.listservers(guild.Id, guild.MemberCount, guild.OwnerId)));
+
+        await Response().Embed(embed).SendAsync();
+    }
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    public Task ShowEmbed(ulong messageId)
+        => ShowEmbed((ITextChannel)ctx.Channel, messageId);
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    public async Task ShowEmbed(ITextChannel ch, ulong messageId)
+    {
+        var user = (IGuildUser)ctx.User;
+        var perms = user.GetPermissions(ch);
+        if (!perms.ReadMessageHistory || !perms.ViewChannel)
+        {
+            await Response().Error(strs.insuf_perms_u).SendAsync();
+            return;
+        }
+
+        var msg = await ch.GetMessageAsync(messageId);
+        if (msg is null)
+        {
+            await Response().Error(strs.msg_not_found).SendAsync();
+            return;
+        }
+
+        if (!msg.Embeds.Any())
+        {
+            await Response().Error(strs.not_found).SendAsync();
+            return;
+        }
+
+        var json = new SmartEmbedTextArray()
+        {
+            Content = msg.Content,
+            Embeds = msg.Embeds
+                        .Map(x => new SmartEmbedArrayElementText(x))
+        }.ToJson(_showEmbedSerializerOptions);
+
+        await Response().Confirm(Format.Code(json, "json").Replace("](", "]\\(")).SendAsync();
+    }
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    [OwnerOnly]
+    public async Task SaveChat(int cnt)
+    {
+        var msgs = new List<IMessage>(cnt);
+        await ctx.Channel.GetMessagesAsync(cnt).ForEachAsync(dled => msgs.AddRange(dled));
+
+        var title = $"Chatlog-{ctx.Guild.Name}/#{ctx.Channel.Name}-{DateTime.Now}.txt";
+        var grouping = msgs.GroupBy(x => $"{x.CreatedAt.Date:dd.MM.yyyy}")
+                           .Select(g => new
+                           {
+                               date = g.Key,
+                               messages = g.OrderBy(x => x.CreatedAt)
+                                           .Select(s =>
+                                           {
+                                               var msg = $"【{s.Timestamp:HH:mm:ss}】{s.Author}:";
+                                               if (string.IsNullOrWhiteSpace(s.ToString()))
+                                               {
+                                                   if (s.Attachments.Any())
+                                                   {
+                                                       msg += "FILES_UPLOADED: "
+                                                              + string.Join("\n", s.Attachments.Select(x => x.Url));
+                                                   }
+                                                   else if (s.Embeds.Any())
+                                                   {
+                                                       msg += "EMBEDS: "
+                                                              + string.Join("\n--------\n",
+                                                                  s.Embeds.Select(x
+                                                                      => $"Description: {x.Description}"));
+                                                   }
+                                               }
+                                               else
+                                                   msg += s.ToString();
+
+                                               return msg;
+                                           })
+                           });
+        await using var stream = await JsonConvert.SerializeObject(grouping, Formatting.Indented).ToStream();
+        await ctx.User.SendFileAsync(stream, title, title);
+    }
+
+    [Cmd]
+    public async Task Ping()
+    {
+        await sem.WaitAsync(5000);
+        try
+        {
+            var sw = Stopwatch.StartNew();
+            var msg = await Response().Text("🏓").SendAsync();
+            sw.Stop();
+            msg.DeleteAfter(0);
+
+            await Response()
+                  .Confirm($"{Format.Bold(ctx.User.ToString())} 🏓 {(int)sw.Elapsed.TotalMilliseconds}ms")
+                  .SendAsync();
+        }
+        finally
+        {
+            sem.Release();
+        }
+    }
+
+    [Cmd]
+    [RequireContext(ContextType.Guild)]
+    [UserPerm(GuildPerm.ManageMessages)]
+    public async Task VerboseError(bool? newstate = null)
+    {
+        var state = _veService.ToggleVerboseErrors(ctx.Guild.Id, newstate);
+
+        if (state)
+            await Response().Confirm(strs.verbose_errors_enabled).SendAsync();
+        else
+            await Response().Confirm(strs.verbose_errors_disabled).SendAsync();
+    }
+
+    [Cmd]
+    [NoPublicBot]
+    [OwnerOnly]
+    public async Task Eval([Leftover] string scriptText)
+    {
+        _ = ctx.Channel.TriggerTypingAsync();
+
+        if (scriptText.StartsWith("```cs"))
+            scriptText = scriptText[5..];
+        else if (scriptText.StartsWith("```"))
+            scriptText = scriptText[3..];
+
+        if (scriptText.EndsWith("```"))
+            scriptText = scriptText[..^3];
+
+        var script = CSharpScript.Create(scriptText,
+            ScriptOptions.Default
+                         .WithReferences(this.GetType().Assembly)
+                         .WithImports(
+                             "System",
+                             "System.Collections.Generic",
+                             "System.IO",
+                             "System.Linq",
+                             "System.Net.Http",
+                             "System.Threading",
+                             "System.Threading.Tasks",
+                             "EllieBot",
+                             "EllieBot.Extensions",
+                             "Microsoft.Extensions.DependencyInjection",
+                             "EllieBot.Common",
+                             "EllieBot.Modules",
+                             "System.Text",
+                             "System.Text.Json"),
+            globalsType: typeof(EvalGlobals));
+
+        try
+        {
+            var result = await script.RunAsync(new EvalGlobals()
+            {
+                ctx = this.ctx,
+                guild = this.ctx.Guild,
+                channel = this.ctx.Channel,
+                user = this.ctx.User,
+                self = this,
+                services = _services
+            });
+
+            var output = result.ReturnValue?.ToString();
+            if (!string.IsNullOrWhiteSpace(output))
+            {
+                var eb = _sender.CreateEmbed()
+                                .WithOkColor()
+                                .AddField("Code", scriptText)
+                                .AddField("Output", output.TrimTo(512)!);
+
+                _ = Response().Embed(eb).SendAsync();
+            }
+        }
+        catch (Exception ex)
+        {
+            await Response().Error(ex.Message).SendAsync();
+        }
+    }
+}

src/EllieBot/Modules/Utility/VerboseErrorsService.cs

@@ -0,0 +1,72 @@
+#nullable disable
+using EllieBot.Db;
+
+namespace EllieBot.Modules.Utility.Services;
+
+public class VerboseErrorsService : IEService
+{
+    private readonly ConcurrentHashSet<ulong> _guildsDisabled;
+    private readonly DbService _db;
+    private readonly CommandHandler _ch;
+    private readonly ICommandsUtilityService _hs;
+    private readonly IMessageSenderService _sender;
+
+    public VerboseErrorsService(
+        IBot bot,
+        DbService db,
+        CommandHandler ch,
+        IMessageSenderService sender,
+        ICommandsUtilityService hs)
+    {
+        _db = db;
+        _ch = ch;
+        _hs = hs;
+        _sender = sender;
+
+        _ch.CommandErrored += LogVerboseError;
+
+        _guildsDisabled = new(bot.AllGuildConfigs.Where(x => !x.VerboseErrors).Select(x => x.GuildId));
+    }
+
+    private async Task LogVerboseError(CommandInfo cmd, ITextChannel channel, string reason)
+    {
+        if (channel is null || _guildsDisabled.Contains(channel.GuildId))
+            return;
+
+        try
+        {
+            var embed = _hs.GetCommandHelp(cmd, channel.Guild)
+                           .WithTitle("Command Error")
+                           .WithDescription(reason)
+                           .WithFooter("Admin may disable verbose errors via `.ve` command")
+                           .WithErrorColor();
+
+            await _sender.Response(channel).Embed(embed).SendAsync();
+        }
+        catch
+        {
+            Log.Information("Verbose error wasn't able to be sent to the server: {GuildId}",
+                channel.GuildId);
+        }
+    }
+
+    public bool ToggleVerboseErrors(ulong guildId, bool? maybeEnabled = null)
+    {
+        using var uow = _db.GetDbContext();
+        var gc = uow.GuildConfigsForId(guildId, set => set);
+
+        if (maybeEnabled is bool isEnabled) // set it
+            gc.VerboseErrors = isEnabled;
+        else // toggle it
+            isEnabled = gc.VerboseErrors = !gc.VerboseErrors;
+
+        uow.SaveChanges();
+
+        if (isEnabled) // This doesn't need to be duplicated inside the using block
+            _guildsDisabled.TryRemove(guildId);
+        else
+            _guildsDisabled.Add(guildId);
+
+        return isEnabled;
+    }
+}

src/EllieBot/Modules/Utility/_common/ConvertUnit.cs

@@ -0,0 +1,12 @@
+#nullable disable
+using System.Diagnostics;
+
+namespace EllieBot.Modules.Utility.Common;
+
+[DebuggerDisplay("Type: {UnitType} Trigger: {Triggers[0]} Mod: {Modifier}")]
+public class ConvertUnit
+{
+    public string[] Triggers { get; set; }
+    public string UnitType { get; set; }
+    public decimal Modifier { get; set; }
+}

src/EllieBot/Modules/Utility/_common/EvalGlobals.cs

@@ -0,0 +1,13 @@
+// ReSharper disable InconsistentNaming
+#nullable disable
+namespace EllieBot.Modules.Utility;
+
+public class EvalGlobals
+{
+    public ICommandContext ctx;
+    public Utility self;
+    public IUser user;
+    public IMessageChannel channel;
+    public IGuild guild;
+    public IServiceProvider services;
+}

src/EllieBot/Modules/Utility/_common/Exceptions/StreamRoleNotFoundException.cs

@@ -0,0 +1,20 @@
+#nullable disable
+namespace EllieBot.Modules.Utility.Common.Exceptions;
+
+public class StreamRoleNotFoundException : Exception
+{
+    public StreamRoleNotFoundException()
+        : base("Stream role wasn't found.")
+    {
+    }
+
+    public StreamRoleNotFoundException(string message) 
+        : base(message)
+    {
+    }
+
+    public StreamRoleNotFoundException(string message, Exception innerException) 
+        : base(message, innerException)
+    {
+    }
+}

src/EllieBot/Modules/Utility/_common/Exceptions/StreamRolePermissionException.cs

@@ -0,0 +1,20 @@
+#nullable disable
+namespace EllieBot.Modules.Utility.Common.Exceptions;
+
+public class StreamRolePermissionException : Exception
+{
+    public StreamRolePermissionException()
+        : base("Stream role was unable to be applied.")
+    {
+    }
+
+    public StreamRolePermissionException(string message)
+        : base(message)
+    {
+    }
+
+    public StreamRolePermissionException(string message, Exception innerException)
+        : base(message, innerException)
+    {
+    }
+}

src/EllieBot/Modules/Utility/_common/StreamRoleListType.cs

@@ -0,0 +1,8 @@
+#nullable disable
+namespace EllieBot.Modules.Utility.Common;
+
+public enum StreamRoleListType
+{
+    Whitelist,
+    Blacklist
+}