Misc.cs

using System.Net.Http;
using System.Text.RegularExpressions;
using CompatApiClient.Utils;
using CompatBot.Commands.ChoiceProviders;
using CompatBot.Database;
using CompatBot.Database.Providers;
using CompatBot.EventHandlers;
using CompatBot.Utils.Extensions;
using DSharpPlus.Commands.Processors.TextCommands;
using HomoglyphConverter;
using Microsoft.EntityFrameworkCore;

namespace CompatBot.Commands;

internal static partial class Misc
{
    private static readonly HttpClient HttpClient = HttpClientFactory.Create();
    private static readonly Random rng = new();

    private static readonly List<string> EightBallAnswers =
    [
        // try to keep it at 2:1:1 ratio 
        // 70
        "It is certain", "It is decidedly so", "Without a doubt", "Yes definitely", "You may rely on it",
        "As I see it, yes", "Most likely", "Outlook good", "Yes", "Signs point to yes", // 10
        "Ya fo sho", "Fo shizzle mah nizzle", "Yuuuup", "Da", "Affirmative",
        "Sure", "Yeah, why not", "Sim", "Oui", "Crystal ball says yes", // 20
        "Heck yeah!", "Roger that", "Aye!", "Yes without a doubt m8!", ":cell_ok_hand_hd:",
        "Don't be an idiot. YES.", "Mhm!", "Many Yes", "Yiss", "Sir, yes, Sir!", // 30 
        "Yah!", "Ja", "Umu!", "Make it so", "Sure thing",
        "Certainly", "Of course", "Definitely", "Indeed", "Much yes", // 40
        "Consider it done", "Totally", "You bet", "Yup", "Yep",
        "Positive!", "Yarp", "Hmmm, yes!", "That's a yes for me", "Aye mate", // 50
        "Absolutely", "Totes my goats", "Without fail", "👌", "👍",
        "Sí", "Sí, señor", "Sì", "Sì, signore", "The wheel of fate is already turning", // 60
        "It's not a no", "Very likely", "Undoubtedly so", "That's a positive", "Yes, you silly",
        "Bones said yes", "Tea leaves settled in a 'yes' pattern", "Dice roll was solid, so yes", "No doubt about it", "Hmmm, I think so", // 70

        // 30
        "Reply hazy, try again", "Ask again later", "Better not tell you now", "Cannot predict now", "Concentrate and ask again",
        "Maybe", "I don't know", "I don't care", "Who cares", "Maybe yes, maybe not", // 10
        "Maybe not, maybe yes", "Ugh", "Probably", "Error 404: answer not found", "Crystal ball is cloudy as milk, ask later",
        "Don't ask me that again", "You should think twice before asking", "You what now?", "Ask Neko", "Ask Ani", // 20
        "Bloody hell, answering that ain't so easy", "I'm pretty sure that's illegal!", "What do *you* think?", "Only on Wednesdays", "Look in the mirror, you know the answer already",
        "Don't know, don't care", "_shows signs of complete confusion_", "Have you googled it?", "Not sure my dude", "🤔", // 30

        // 40
        "Don't count on it", "My reply is no", "My sources say no", "Outlook not so good", "Very doubtful",
        "Nah mate", "Nope", "Njet", "Of course not", "Seriously no", // 10
        "Noooooooooo", "Most likely not", "Não", "Non", "Hell no",
        "Absolutely not", "Nuh-uh!", "Nyet!", "Negatory!", "Heck no", // 20
        "Nein!", "I think not", "I'm afraid not", "Nay", "Yesn't",
        "No way", "Certainly not", "I must say no", "Nah", "Negative", // 30
        "Definitely not", "No way, Jose", "Not today", "No no no no no no no no no no. No.", "Not in a million years",
        "I'm afraid I can't let you do that Dave.", "This mission is too important for me to allow you to jeopardize it.", "Oh, I don't think so", "By *no* means", "👎" // 40
    ];

    private static readonly List<string> EightBallSnarkyComments =
    [
        "Can't answer the question that wasn't asked",
        "Having issues with my mind reading attachment, you'll have to state your question explicitly",
        "Bad reception on your brain waves today, can't read the question",
        "What should the answer be for the question that wasn't asked 🤔",
        "In Discord no one can read your question if you don't type it",
        "In space no one can hear you scream; that's what you're doing right now",
        "Unfortunately there's no technology to transmit your question telepathically just yet",
        "I'd say maybe, but I'd need to see your question first",
    ];

    private static readonly List<string> EightBallTimeUnits =
    [
        "second", "minute", "hour", "day", "week", "month", "year", "decade", "century", "millennium", "aeon",
        "night", "moon cycle", "solar eclipse", "blood moon", "season change", "solar cycle", "sothic cycle",
        "complete emulator rewrite", "generation",
    ];

    private static readonly List<string> RateAnswers =
    [
        "Not so bad", "I likesss!", "Pretty good", "Gucci gud", "Amazing!",
        "Glorious!", "Very good", "Excellent…", "Magnificent", "Rate bot says he likes, so you like too",
        "If you reorganize the words it says \"pretty cool\"", "I approve", "<:morgana_sparkle:315899996274688001>　やるじゃねーか！", "Not half bad 👍", "Belissimo!",
        "Cool. Cool cool cool", "I am in awe", "Incredible!", "Radiates gloriousness", "Like a breath of fresh air",
        "Sunshine for my digital soul 🌞", "Fantastic like petrichor 🌦️", "Joyous like a rainbow 🌈", "Unbelievably good", "Can't recommend enough",
        "Not perfect, but ok", "So good!", "A lucky find!", "💯 approved", "I don't see any downsides",
        "Here's my seal of approval 💮", "As good as it gets", "A benchmark to pursue", "Should make you warm and fuzzy inside", "Fabulous",
        "Cool like a cup of good wine 🍷", "Magical ✨", "Wondrous like a unicorn 🦄", "Soothing sight for these tired eyes", "Lovely",
        "So cute!", "It's so nice, I think about it every day!", "😊 Never expected to be this pretty!", "It's overflowing with charm!", "Filled with passion!",
        "A love magnet", "Pretty Fancy", "Admirable", "Sweet as a candy", "Delightful",
        "Enchanting as the Sunset", "A beacon of hope!", "Filled with hope!", "Shiny!", "Absolute Hope!",
        "The meaning of hope", "Inspiring!", "Marvelous", "Breathtaking", "Better than bubble wrap.",

        // 22
        "Ask MsLow", "Could be worse", "I need more time to think about it", "It's ok, nothing and no one is perfect", "🆗",
        "You already know, my boi", "Unexpected like a bouquet of sunflowers 🌻", "Hard to measure precisely…", "Requires more data to analyze", "Passable",
        "Quite unique 🤔", "Less like an orange, and more like an apple", "I don't know, man…", "It is so tiring to grade everything…", "…",
        "Bland like porridge", "🤔", "Ok-ish?", "Not _bad_, but also not _good_", "Why would you want to _rate_ this?", "meh",
        "I've seen worse",

        // 43
        "Bad", "Very bad", "Pretty bad", "Horrible", "Ugly",
        "Disgusting", "Literally the worst", "Not interesting", "Simply ugh", "I don't like it! You shouldn't either!",
        "Just like you, 💩", "Not approved", "Big Mistake", "The opposite of good", "Could be better",
        "🤮", "😐", "So-so", "Not worth it", "Mediocre at best",
        "Useless", "I think you misspelled `poop` there", "Nothing special", "😔", "Real shame",
        "Boooooooo!", "Poopy", "Smelly", "Feeling-breaker", "Annoying",
        "Boring", "Easily forgettable", "An Abomination", "A Monstrosity", "Truly horrific",
        "Filled with despair!", "Eroded by despair", "Hopeless…", "It's pretty foolish to want to rate this", "Cursed with misfortune",
        "Nothing but terror", "Not good, at all", "A waste of time",
    ];

    private static readonly char[] Separators = [' ', '　', '\r', '\n'];
    private static readonly char[] Suffixes = [',', '.', ':', ';', '!', '?', ')', '}', ']', '>', '+', '-', '/', '*', '=', '"', '\'', '`'];
    private static readonly char[] Prefixes = ['@', '(', '{', '[', '<', '!', '`', '"', '\'', '#'];
    private static readonly char[] EveryTimable = Separators.Concat(Suffixes).Concat(Prefixes).Distinct().ToArray();
    
    private static readonly HashSet<string> Me = new(StringComparer.InvariantCultureIgnoreCase)
    {
        "I", "me", "myself", "moi"
    };

    private static readonly HashSet<string> Your = new(StringComparer.InvariantCultureIgnoreCase)
    {
        "your", "you're", "yor", "ur", "yours", "your's",
    };

    private static readonly HashSet<char> Vowels = ['a', 'e', 'i', 'o', 'u'];

    [GeneratedRegex("rate (?<instead>.+) instead", RegexOptions.ExplicitCapture | RegexOptions.Singleline)]
    private static partial Regex Instead();
    [GeneratedRegex(@"(?<num>\d+)?d(?<face>\d+)(?:\+(?<mod>\d+))?")]
    private static partial Regex DiceNotationPattern();

    [Command("about"), Description("Bot information")]
    public static async ValueTask About(SlashCommandContext ctx)
    {
        var ephemeral = !ctx.Channel.IsSpamChannel() && !ctx.Channel.IsOfftopicChannel();
        var hcorion = ctx.Client.GetEmoji(":hcorion:", DiscordEmoji.FromUnicode("🍁"));
        var clienthax = ctx.Client.GetEmoji(":gooseknife:", DiscordEmoji.FromUnicode("🐱"));
        var embed = new DiscordEmbedBuilder
        {
            Title = "RPCS3 Compatibility Bot mk. III",
            Url = "https://github.com/RPCS3/discord-bot",
            Color = DiscordColor.Purple,
        }.AddField(
            "Made by",
            $"""
            💮 13xforever
            🇭🇷 Roberto Anić Banić aka nicba1010
            {clienthax} clienthax
            """
        ).AddField(
            "People who ~~broke~~ helped test the bot",
            $"""
            🐱 Juhn
            {hcorion} hcorion
            🙃 TGE
            🍒 Maru
            ♋ Tourghool
            """
        ).WithFooter($"Running {Config.GitRevision}");
        await ctx.RespondAsync(embed, ephemeral: ephemeral);
    }

    [Command("roll")]
    [Description("Generate random number between 1 and N, or roll dice(s)")]
    public static async ValueTask Roll(
        SlashCommandContext ctx,
        [Description("Some number `N` for random number, or a list of dice (e.g. `2d6+1 1d3`)")]
        string dice
    )
    {
        var ephemeral = !ctx.Channel.IsSpamChannel() || !ctx.Channel.IsOfftopicChannel();
        var result = new DiscordInteractionResponseBuilder(Roll(dice)).AsEphemeral(ephemeral);
        await ctx.RespondAsync(result.AsEphemeral(ephemeral)).ConfigureAwait(false);
    }
    
    internal static DiscordMessageBuilder Roll(string dice)
    {
        string? msg = null;
        var result = new DiscordMessageBuilder();
        if (int.TryParse(dice, out var maxValue))
        {
            if (maxValue > 1)
                lock (rng) msg = (rng.Next(maxValue) + 1).ToString();
            if (msg is {Length: >0})
                return result.WithContent(msg);
            return result.WithContent($"💩 How is {maxValue} a positive natural number?");
        }

        if (DiceNotationPattern().Matches(dice) is not { Count: > 0 and <= EmbedPager.MaxFields } matches)
            return result.WithContent($"{Config.Reactions.Failure} Couldn't parse dice notation");
        
        var embed = new DiscordEmbedBuilder();
        var grandTotal = 0;
        foreach (Match m in matches)
        {
            msg = "";
            if (!int.TryParse(m.Groups["num"].Value, out var num))
                num = 1;
            if (int.TryParse(m.Groups["face"].Value, out var face)
                && num is > 0 and < 101
                && face is > 1 and < 1001)
            {
                List<int> rolls;
                lock (rng) rolls = Enumerable.Range(0, num).Select(_ => rng.Next(face) + 1).ToList();
                var total = rolls.Sum();
                var totalStr = total.ToString();
                if (int.TryParse(m.Groups["mod"].Value, out var mod) && mod > 0)
                    totalStr += $" + {mod} = {total + mod}";
                var rollsStr = string.Join(' ', rolls);
                if (rolls.Count > 1)
                {
                    msg = "Total: " + totalStr;
                    msg += "\nRolls: " + rollsStr;
                }
                else
                    msg = totalStr;
                grandTotal += total + mod;
                var diceDesc = $"{num}d{face}";
                if (mod > 0)
                    diceDesc += "+" + mod;
                embed.AddField(diceDesc, msg.Trim(EmbedPager.MaxFieldLength), true);
            }
        }
        if (matches.Count is 1)
            embed = null;
        else
        {
            embed.Description = "Grand total: " + grandTotal;
            embed.Title = $"Result of {matches.Count} dice rolls";
            embed.Color = Config.Colors.Help;
            msg = null;
        }

        if (embed is not null)
            return result.AddEmbed(embed);
        if (msg is { Length: > 0 })
            return result.WithContent(msg);
        return result.WithContent($"{Config.Reactions.Failure} Couldn't parse dice notation");
    }

    [Command("random")]
    internal static class Rng
    {
        [Command("game"), Description("Get random game")]
        public static async ValueTask Game(
            SlashCommandContext ctx,
            [Description("Only pick from titles with specified compatibility status. Default is any"), SlashChoiceProvider<CompatListStatusChoiceProvider>] string status = "any"
        )
        {
            var ephemeral = !ctx.Channel.IsSpamChannel();
            await ctx.DeferResponseAsync(ephemeral).ConfigureAwait(false);
            Thumbnail? productCode;
            var (exact, s) = Utils.Extensions.Converters.ParseStatus(status);
            await using (var db = await ThumbnailDb.OpenReadAsync().ConfigureAwait(false))
            {
                var count = await db.Thumbnail
                    .AsNoTracking()
                    .WithStatus(s, exact)
                    .CountAsync()
                    .ConfigureAwait(false);
                if (count is 0)
                {
                    await ctx.RespondAsync("Sorry, there are no games to pick from", ephemeral: true).ConfigureAwait(false);
                    return;
                }

                int tmpRng;
                lock (rng) tmpRng = rng.Next(count);
                productCode = await db.Thumbnail
                    .AsNoTracking()
                    .WithStatus(s, exact)
                    .Skip(tmpRng)
                    .FirstOrDefaultAsync()
                    .ConfigureAwait(false);
                if (productCode is null)
                {
                    await ctx.RespondAsync($"{Config.Reactions.Failure} Sorry, there's something wrong with my brains today. Try again or something.", ephemeral: true).ConfigureAwait(false);
                    return;
                }
            }

            var result = await ProductCodeLookup.LookupProductCodeAndFormatAsync(ctx.Client, [productCode.ProductCode]).ConfigureAwait(false);
            await ctx.RespondAsync(result[0].builder, ephemeral: ephemeral).ConfigureAwait(false);
        }
    }

    [Command("8ball")]
    [Description("Get ~~a random~~ an objectively best answer to your question")]
    public static ValueTask EightBall(CommandContext ctx, [Description("A yes or no question")] string question)
    {
        var ephemeral = !ctx.Channel.IsSpamChannel() && !ctx.Channel.IsOfftopicChannel();
        question = question.ToLowerInvariant();
        if (question.StartsWith("when "))
            return When(ctx, question[5..]);
        
        string answer;
        var pool = string.IsNullOrEmpty(question) ? EightBallSnarkyComments : EightBallAnswers;
        lock (rng) answer = pool[rng.Next(pool.Count)];
        if (answer.StartsWith(':') && answer.EndsWith(':'))
            answer = ctx.Client.GetEmoji(answer, "🔮");
        if (ctx is SlashCommandContext sctx)
            return sctx.RespondAsync(answer, ephemeral: ephemeral);
        return ctx.RespondAsync(answer);
    }

    [Command("when"), AllowedProcessors<TextCommandProcessor>]
    [Description("Advanced clairvoyance service to predict the time frame for specified event with maximum accuracy")]
    public static ValueTask When(CommandContext ctx, [RemainingText, Description("Something to happen")] string something = "")
    {
        var ephemeral = !ctx.Channel.IsSpamChannel() && !ctx.Channel.IsOfftopicChannel() && !ModProvider.IsMod(ctx.User.Id);
        var question = something.Trim().TrimEnd('?').ToLowerInvariant().StripInvisibleAndDiacritics().ToCanonicalForm();
        var prefix = DateTime.UtcNow.ToString("yyyyMMddHH");
        var crng = new Random((prefix + question).GetHashCode());
        var number = crng.Next(100) + 1;
        var unit = EightBallTimeUnits[crng.Next(EightBallTimeUnits.Count)];
        if (number > 1)
        {
            if (unit.EndsWith("ry"))
                unit = unit[..^1] + "ie";
            unit += "s";
            if (unit == "millenniums")
                unit = "millennia";
        }
        var willWont = crng.NextDouble() < 0.5 ? "will" : "won't";
        var result = $"🔮 My psychic powers tell me it {willWont} happen in the next **{number} {unit}** 🔮";
        if (ctx is SlashCommandContext sctx)
            return sctx.RespondAsync(result, ephemeral: ephemeral);
        return ctx.RespondAsync(result);
    }

    [Command("how"), AllowedProcessors<TextCommandProcessor>]
    [Description("Advanced clairvoyance service to predict the exact amount of anything that could be measured")]
    internal static class How
    {
        [Command("much"), TextAlias("many")]
        [Description("Advanced clairvoyance service to predict the exact amount of anything that could be measured")]
        public static async ValueTask Much(TextCommandContext ctx, [RemainingText, Description("much or many ")] string ofWhat = "")
        {
            var question = ofWhat.Trim().TrimEnd('?').ToLowerInvariant().StripInvisibleAndDiacritics().ToCanonicalForm();
            var prefix = DateTime.UtcNow.ToString("yyyyMMddHH");
            var crng = new Random((prefix + question).GetHashCode());
            if (crng.NextDouble() < 0.0001)
                await ctx.RespondAsync("🔮 My psychic powers tell me the answer should be **3.50** 🔮").ConfigureAwait(false);
            else
                await ctx.RespondAsync($"🔮 My psychic powers tell me the answer should be **{crng.Next(100) + 1}** 🔮").ConfigureAwait(false);
        }
    }

    [Command("rate")]
    [Description("Gives a ~~random~~ expert judgment on the matter at hand")]
    public static async ValueTask Rate(TextCommandContext ctx, [RemainingText, Description("Something to rate")] string whatever = "")
    {
        try
        {
            var funMult = DateTime.UtcNow is {Month: 4, Day: 1} ? 100 : Config.FunMultiplier;
            var choices = RateAnswers;
            var choiceFlags = new HashSet<char>();
            whatever = whatever.ToLowerInvariant().StripInvisibleAndDiacritics();
            var originalWhatever = whatever;
            var matches = Instead().Matches(whatever);
            if (matches is [.., Match last])
            {
                var insteadWhatever = last.Groups["instead"].Value.TrimEager();
                if (!string.IsNullOrEmpty(insteadWhatever))
                    whatever = insteadWhatever;
            }
            foreach (var attachment in ctx.Message.Attachments)
            {
                if (attachment is { Width: > 0, Height: > 0, Url: {Length: >0} url })
                {
                    await using var imgStream = await HttpClient.GetStreamAsync(url).ConfigureAwait(false);
                    if (await ColorGetter.GetBlurHashAsync(imgStream).ConfigureAwait(false) is {Length: >0} hash)
                    {
#if DEBUG
                        Config.Log.Trace($"Got image blur hash {hash}");
#endif
                        whatever += $" {hash}";
                        continue;
                    }
                }
                whatever += $" {attachment.FileSize}";
            }

            var nekoUser = await ctx.Client.GetUserAsync(272032356922032139ul).ConfigureAwait(false);
            var nekoMember = await ctx.Client.GetMemberAsync(nekoUser).ConfigureAwait(false);
            var nekoMatch = new HashSet<string>([nekoUser.Id.ToString(), nekoUser.Username, nekoMember?.DisplayName ?? "neko", "neko", "nekotekina"
            ]);
            var kdUser = await ctx.Client.GetUserAsync(272631898877198337ul).ConfigureAwait(false);
            var kdMember = await ctx.Client.GetMemberAsync(kdUser).ConfigureAwait(false);
            var kdMatch = new HashSet<string>([kdUser.Id.ToString(), kdUser.Username, kdMember?.DisplayName ?? "kd-11", "kd", "kd-11", "kd11"
            ]);
            var botUser = ctx.Client.CurrentUser;
            var botMember = await ctx.Client.GetMemberAsync(botUser).ConfigureAwait(false);
            var botMatch = new HashSet<string>([botUser.Id.ToString(), botUser.Username, botMember?.DisplayName ?? "RPCS3 bot", "yourself", "urself", "yoself"
            ]);

            var prefix = DateTime.UtcNow.ToString("yyyyMMddHH");
            var words = whatever.Split(Separators);
            var result = new StringBuilder();
            for (var i = 0; i < words.Length; i++)
            {
                var word = words[i].TrimEager();
                var suffix = "";
                var tmp = word.TrimEnd(Suffixes);
                if (tmp.Length != word.Length)
                {
                    suffix = word[..tmp.Length];
                    word = tmp;
                }
                tmp = word.TrimStart(Prefixes);
                if (tmp.Length != word.Length)
                {
                    result.Append(word[..^tmp.Length]);
                    word = tmp;
                }
                if (word.EndsWith("'s"))
                {
                    suffix = "'s" + suffix;
                    word = word[..^2];
                }

                void MakeCustomRoleRating(DiscordMember? mem)
                {
                    if (mem is null || choiceFlags.Contains('f'))
                        return;

                    var roleList = mem.Roles.ToList();
                    if (roleList.Count == 0)
                        return;

                    var role = roleList[new Random((prefix + mem.Id).GetHashCode()).Next(roleList.Count)].Name?.ToLowerInvariant();
                    if (string.IsNullOrEmpty(role))
                        return;

                    if (role.EndsWith('s'))
                        role = role[..^1];
                    var article = Vowels.Contains(role[0]) ? "n" : "";
                    choices = RateAnswers.Concat(Enumerable.Repeat($"Pretty fly for a{article} {role} guy", RateAnswers.Count * funMult / 20)).ToList();
                    choiceFlags.Add('f');
                }

                var appended = false;
                DiscordMember? member = null;
                if (Me.Contains(word))
                {
                    member = ctx.Member;
                    word = ctx.Message.Author.Id.ToString();
                    result.Append(word);
                    appended = true;
                }
                else if (word is "my")
                {
                    result.Append(ctx.Message.Author.Id).Append("'s");
                    appended = true;
                }
                else if (botMatch.Contains(word))
                {
                    word = ctx.Client.CurrentUser.Id.ToString();
                    result.Append(word);
                    appended = true;
                }
                else if (Your.Contains(word))
                {
                    result.Append(ctx.Client.CurrentUser.Id).Append("'s");
                    appended = true;
                }
                else if (word.StartsWith("actually") || word.StartsWith("nevermind") || word.StartsWith("nvm"))
                {
                    result.Clear();
                    appended = true;
                }
                if (member is null && i is 0 && await ctx.ResolveMemberAsync(word).ConfigureAwait(false) is DiscordMember m)
                    member = m;
                if (member is not null)
                {
                    if (suffix.Length is 0)
                        MakeCustomRoleRating(member);
                    if (!appended)
                    {
                        result.Append(member.Id);
                        appended = true;
                    }
                }
                if (nekoMatch.Contains(word))
                {
                    if (i is 0 && suffix.Length is 0)
                    {
                        choices = RateAnswers.Concat(Enumerable.Repeat("Ugh", RateAnswers.Count * 3 * funMult)).ToList();
                        MakeCustomRoleRating(nekoMember);
                    }
                    result.Append(nekoUser.Id);
                    appended = true;
                }
                if (kdMatch.Contains(word))
                {
                    if (i is 0 && suffix.Length is 0)
                    {
                        choices = RateAnswers.Concat(Enumerable.Repeat("RSX genius", RateAnswers.Count * 3 * funMult)).ToList();
                        MakeCustomRoleRating(kdMember);
                    }
                    result.Append(kdUser.Id);
                    appended = true;
                }
                if (!appended)
                    result.Append(word);
                result.Append(suffix).Append(' ');
            }
            whatever = result.ToString();
            var cutIdx = whatever.LastIndexOf("never mind", StringComparison.Ordinal);
            if (cutIdx > -1)
                whatever = whatever[cutIdx..];
            whatever = whatever.Replace("'s's", "'s").TrimStart(EveryTimable).Trim();
            if (whatever.StartsWith("rate "))
                whatever = whatever[("rate ".Length)..];
            if (originalWhatever == "sonic" || originalWhatever.Contains("sonic the"))
                choices = RateAnswers
                    .Concat(Enumerable.Repeat("💩 out of 🦔", RateAnswers.Count * funMult))
                    .Concat(Enumerable.Repeat("Sonic out of 🦔", funMult))
                    .Concat(Enumerable.Repeat("Sonic out of 10", funMult))
                    .ToList();

            if (string.IsNullOrEmpty(whatever))
                await ctx.Channel.SendMessageAsync("Rating nothing makes _**so much**_ sense, right?").ConfigureAwait(false);
            else
            {
                var seedMsg = prefix + whatever;
                var seed = seedMsg.GetStableHash();
#if DEBUG
                Config.Log.Trace($"Rating seed is {seed:x8} for '{seedMsg}'");
#endif
                var seededRng = new Random(seed);
                var answer = choices[seededRng.Next(choices.Count)];
                var msgBuilder = new DiscordMessageBuilder()
                    .WithContent(answer)
                    .WithReply(ctx.Message.Id);
                await ctx.RespondAsync(msgBuilder).ConfigureAwait(false);
            }
        }
        catch (Exception e)
        {
            Config.Log.Warn(e, $"Failed to rate {whatever}");
        }
    }

    [Command("meme")]
    [Description("Get access to #memes")]
    public static ValueTask Memes(
        SlashCommandContext ctx,
        [Description("Default is `I understand that memeing is a serious business, and I swear my memes are funny`")]
        string password
    ) => ctx.RespondAsync(
            new DiscordInteractionResponseBuilder()
                .WithContent($"{ctx.User.Mention} congratulations, you're the meme")
                .AsEphemeral()
                .AddMention(RepliedUserMention.All)
        );

    [Command("compare")]
    [Description("Calculate the similarity metric of two phrases from 0 (completely different) to 1 (identical)")]
    public static ValueTask Compare(TextCommandContext ctx, string strA, string strB)
    {
        var result = strA.GetFuzzyCoefficientCached(strB);
        return ctx.RespondAsync($"Similarity score is {result:0.######}");
    }

    [Command("decode")]
    [Description("Describe Playstation product code")]
    public static async ValueTask ProductCode(
        SlashCommandContext ctx,
        [Description("Product code such as NPEB or BLUS12345"), MinMaxLength(4, 10)]
        string productCode
    )
    {
        var ephemeral = !ctx.Channel.IsSpamChannel();
        productCode = ProductCodeLookup.GetProductIds(productCode).FirstOrDefault() ?? productCode;
        productCode = productCode.ToUpperInvariant();
        if (productCode.Length > 3)
        {
            var dsc = ProductCodeDecoder.Decode(productCode);
            var info = string.Join('\n', dsc);
            if (productCode.Length == 9)
            {
                var embed = await ctx.Client.LookupGameInfoAsync(productCode).ConfigureAwait(false);
                embed.AddField("Product code info", info);
                await ctx.RespondAsync(embed, ephemeral: ephemeral).ConfigureAwait(false);
            }
            else
                await ctx.RespondAsync(info, ephemeral: ephemeral).ConfigureAwait(false);
        }
        else
            await ctx.RespondAsync($"{Config.Reactions.Failure} Invalid product code", ephemeral: ephemeral).ConfigureAwait(false);
    }
}