Add !8ball command (#35)

KfChatDotNetBot/Commands/EightballCommand.cs

@@ -0,0 +1,123 @@
+using System.Text.RegularExpressions;
+using KfChatDotNetBot;
+using KfChatDotNetBot.Commands;
+using KfChatDotNetBot.Models;
+using KfChatDotNetBot.Models.DbModels;
+using KfChatDotNetWsClient.Models.Events;
+using RandN;
+using RandN.Compat;
+
+public class EightBallCommand : ICommand
+{
+    public List<Regex> Patterns => [
+        new Regex("^8ball", RegexOptions.IgnoreCase)
+    ];
+    public string? HelpText => "Ask the magic 8-ball a question";
+    public UserRight RequiredRight => UserRight.Guest;
+    public TimeSpan Timeout => TimeSpan.FromSeconds(10);
+    public RateLimitOptionsModel? RateLimitOptions => null;
+
+    private static readonly string[] AnswersYes = [
+        "Yes, definitely.",
+        "It is certain.",
+        "Yes, in due time.",
+        "Yes, but only if you believe.",
+        "It is decidedly so.",
+        "Yes, but be cautious.",
+        "Yes, but only if you try hard enough.",
+        "Yes, but only if you ask nicely.",
+        "Yes, but only if you bribe me.",
+        "Without a doubt.",
+        "You may rely on it.",
+        "As I see it, yes.",
+        "Most likely.",
+        "Outlook good.",
+        "Signs point to yes.",
+        "Absolutely.",
+        "Certainly.",
+        "The stars say yes.",
+        "The answer is yes.",
+        "Definitely yes.",
+        "Yes, yes, yes!",
+        "Affirmative.",
+        "By all means.",
+        "The universe agrees.",
+        "Chances are good.",
+        "It's a sure thing.",
+        "You can count on it.",
+        "The future looks bright.",
+        "Yes, go for it.",
+        "Yes, the answer is clear.",
+    ];
+
+    private static readonly string[] AnswersUncertain = [
+            "Concentrate and ask again.",
+            "Ask again later.",
+            "Cannot predict now.",
+            "Reply hazy, try again.",
+            "Better not tell you now.",
+            "It's unclear at the moment.",
+            "I'm not sure.",
+            "Maybe...",
+            "That's a mystery.",
+            "The answer is unclear.",
+            "It's hard to say.",
+            "I'm undecided.",
+            "The future is uncertain.",
+            "It's anyone's guess.",
+            "I can't tell you right now.",
+            "The signs are unclear.",
+        ];
+
+    private static readonly string[] AnswersNo = [
+        "No, absolutely not.",
+        "No, never.",
+        "No, the answer is no.",
+        "No, the universe says no.",
+        "No, the stars are not aligned.",
+        "My reply is no.",
+        "Outlook not so good.",
+        "Don't count on it.",
+        "My sources say no.",
+        "Very doubtful.",
+        "Definitely not.",
+        "No way.",
+        "Not in a million years.",
+        "The answer is a resounding no.",
+        "Chances are slim to none.",
+        "The universe says no.",
+        "Negative.",
+        "Absolutely not.",
+        "I don't think so.",
+        "The signs point to no.",
+        "Certainly not.",
+        "I wouldn't bet on it.",
+        "The answer is no.",
+        "No chance.",
+        "Not likely.",
+        "The outlook is bleak."
+    ];
+
+    public async Task RunCommand(ChatBot botInstance, MessageModel message, UserDbModel user, GroupCollection arguments, CancellationToken ctx)
+    {
+        var random = RandomShim.Create(StandardRng.Create());
+        string response;
+
+        var outcome = random.Next(0, 110);
+
+        if (outcome < 50)
+        {
+            response = AnswersYes[random.Next(AnswersYes.Length)];
+        }
+        else if (outcome < 100)
+        {
+            response = AnswersNo[random.Next(AnswersNo.Length)];
+        }
+        else
+        {
+            response = AnswersUncertain[random.Next(AnswersUncertain.Length)];
+        }
+
+        await botInstance.SendChatMessageAsync($"@{user.KfUsername}, {response}", true);
+    }
+}