NAK_CVR_Mods/ChatBoxExtensions/Integrations/Commands.cs

namespace NAK.Melons.ChatBoxExtensions.Integrations;

public static class Commands {

    private const string Character = "/";
    private static readonly List<Command> CommandList = new();

    internal static void InitializeCommandHandlers() {
        Kafe.ChatBox.API.OnMessageSent += (source, msg, notification, displayMsg) => HandleSentCommand(msg, notification, displayMsg);
        Kafe.ChatBox.API.OnMessageReceived += (source, sender, msg, notification, displayMsg) => HandleReceivedCommand(sender, msg, notification, displayMsg);
    }

    internal static void RegisterCommand(string prefix, Action<string, bool, bool> onCommandSent = null, Action<string, string, bool, bool> onCommandReceived = null) {
        var cmd = new Command { Prefix = prefix, OnCommandSent = onCommandSent, OnCommandReceived = onCommandReceived };
        CommandList.Add(cmd);
    }

    internal static void UnregisterCommand(string prefix) {
        CommandList.RemoveAll(cmd => cmd.Prefix == prefix);
    }

    private class Command {

        internal string Prefix;

        // Command Sent (message)
        internal Action<string, bool, bool> OnCommandSent;

        // Command Sent (sender guid, message)
        internal Action<string, string, bool, bool> OnCommandReceived;
    }

    private static void HandleSentCommand(string message, bool notification, bool displayMsg) {
        if (!message.StartsWith(Character)) return;
        foreach (var command in CommandList.Where(command => message.StartsWith(Character + command.Prefix))) {
            command.OnCommandSent?.Invoke(message, notification, displayMsg);
        }
    }

    private static void HandleReceivedCommand(string sender, string message, bool notification, bool displayMsg) {
        if (!message.StartsWith(Character)) return;
        foreach (var command in CommandList.Where(command => message.StartsWith(Character + command.Prefix))) {
            command.OnCommandReceived?.Invoke(sender, message, notification, displayMsg);
        }
    }
}