karmabot/JetKarmaBot/Commands/HelpCommand.cs

using JetKarmaBot.Services.Handling;

namespace JetKarmaBot.Commands;

public class HelpCommand : IChatCommand
{
    [Inject] Localization Locale { get; set; }
    public IReadOnlyCollection<string> Names => new[] { "help" };

    public string Description => "Displays help text for all(one) command(s)";
    public string DescriptionID => "jetkarmabot.help.help";

    public IReadOnlyCollection<ChatCommandArgument> Arguments => new ChatCommandArgument[] {
        new ChatCommandArgument() {
            Name="command",
            Required=false,
            Type=ChatCommandArgumentType.String,
            Description="The command to return help text for. If empty shows all commands.",
            DescriptionID="jetkarmabot.help.commandhelp"
        }
     };

    public async Task<bool> Execute(RequestContext ctx)
    {
        var currentLocale = ctx.GetFeature<Locale>();
        var router = ctx.GetFeature<ChatCommandRouter.Feature>().Router;
        if (ctx.Command.Parameters.Length < 1)
        {
            await ctx.SendMessage(router.GetHelpText(currentLocale));
            return true;
        }
        else
        {
            await ctx.SendMessage(router.GetHelpTextFor(ctx.Command.Parameters[0], currentLocale));
            return true;
        }
    }
}