require_relative './session'
require_relative './lesson'
require_relative './commands'

class Ika
  attr_reader :bot
  attr_reader :lessons, :sessions
  attr_accessor :current_lesson, :current_session

  def initialize(bot)
    @bot = bot
    @lessons = {}
    @sessions = {}
    @current_session = nil
    @current_lesson = Lesson.new
  end

  def start!
    bot.remove_handler @message_handler if @message_handler

    @message_handler = bot.message do |message|
      handle_message message
    end

    bot.run # you can run this in the background, idk
  end

  def stop!
    bot.remove_handler @message_handler if @message_handler
  end

  def current_lesson_running?
    current_lesson.running?
  end

  def start_lesson!(message)
    current_lesson.start!(message.channel)
  end

  def stop_current_lesson!
    current_lesson.stop!
  end

  def handle_message(message)
    if command = Commands::Command.for(self, message)
      command.execute
    end

    return current_session&.respond_to message
  end
end