ExampleCommand.kt

import framework.Command
import framework.CommandCanister
import framework.CommandHandler
import framework.CommandRegister
import org.apache.commons.lang3.StringUtils

class ExampleCommand {

    @Command("/math") fun math(canister: CommandCanister) {

        val args = canister.args

        if (StringUtils.isNumeric(args[0]) && args[1].toCharArray()[0] is Char && StringUtils.isNumeric(args[2])) {

            val one = args[0].toDouble()
            val two = args[2].toDouble()

            val res: Double

            when (args[1].toCharArray()[0]) {

                '+' -> res = one + two
                '-' -> res = one - two
                '*' -> res = one * two
                '/' -> res = one * two

                else -> res = 0.0
            }


            canister.event.channel.sendMessage(res.toString())
        }
    }
}


fun main(args: Array<String>) {
    // do client stuff
    client!!.dispatcher.registerListener(CommandHandler())

    CommandRegister.register(ExampleCommand::class)
}