twitch-commando/src/defaultCommands/HelpCommand.js

Twitch Bot Commando Client

const TwitchChatCommand = require("../commands/TwitchChatCommand");

module.exports = class HelpCommand extends TwitchChatCommand {
  constructor(client) {
    super(client, {
      name: "help",
      group: "system",
      description:
        "This command shows help for all commands. Send !help <command> for detailed help on a command",
      examples: ["!help", "!help <command>"],
      args: [
        {
          name: "command",
          type: String,
          defaultValue: ""
        }
      ]
    });
  }

  async run(msg, { command }) {
    var messageText = "";

    if (command == "") {
      messageText = "Available commands: ";

      var commands = new Array();

      for (let index = 0; index < this.client.commands.length; index++) {
        const c = this.client.commands[index];

        if (!c.options.hideFromHelp) {
          var prefix = await this.client.settingsProvider.get(
            msg.channel.name,
            "prefix",
            this.client.options.prefix
          );

          commands.push(prefix + c.options.name);
        }
      }

      messageText += commands.join(", ");

      return msg.author.whisper(messageText);
    } else {
      var selectedCommand = this.client.commands.find(c => {
        return c.options.name == command && !c.options.hideFromHelp;
      });

      if (selectedCommand) {
        messageText =
          command + " command details: " + selectedCommand.options.description;

        if (
          selectedCommand.options.examples &&
          selectedCommand.options.examples.length > 0
        ) {
          messageText +=
            " - Examples: " + selectedCommand.options.examples.join(", ");
        }

        return msg.author.whisper(messageText);
      } else return msg.actionReply("command not found.");
    }
  }
};