class Drill
  COMMANDS = %w[
    init
    start
    end
  ]

  attr_reader :channel

  def initialize(channel)
    @channel = channel
    @exists = false
    @started = false
  end

  def init!
    @exists = true
  end

  def start!
    @started = true
  end

  def end!
    @started = false
  end

  def handle_message(message)
    message.command_message ? handle_command(message) : handle_normal_message(message)
  end

  def handle_command(message)
    command = message.command
    if COMMANDS.includes?(command)
      send("handle_#{command}", message)
    else
      puts "[Drill] Unknown command #{command}"
    end
  end

  def started?
    @started
  end

  def exists?
    @exists
  end
end