require_relative "drill"

class DrillPlugin
  COMMANDS = %w[
    init
    start
    end
  ]

  attr_reader :bot, :drills

  def initialize(bot)
    @bot = bot
    @drills = Hash.new { Drill::Empty.new } 
  end

  def handle_message(message)
    puts "[#{self.class.name}] Handling \"#{message.content}\" from #{message.author.display_name}"
    command = strip_prefix(message.content).split.first
    p command
    if command.nil? || command == "" || command == "help" || command == "!drill"
      handle_help message
    elsif COMMANDS.include? command
      drill = drills[message.channel.id]
      send("handle_#{command}", message, drill)
    else
      message.respond "Unknown command #{command}"
    end
  end

  def handle_init(message, drill)
    if drill.exists?
      message.respond "You've already got a drill running in this channel"
    else
      drills[message.channel.id] = Drill.new message.channel
      message.respond "New drill created!"
    end
  end

  def handle_start(message, drill)
    if drill.started?
      message.respond "This drill has already started!"
    elsif drill.exists?
      drill.start!
      message.respond "Drill started!"
    else
      message.respond "You have to `!drill init` before you can start the drill"
    end
  end

  def handle_end(message, drill)
    if !drill.exists?
      message.respond "There's no drill to end"
    elsif drill.started?
      drills.delete message.channel.id
      message.respond "Ending the drill now!"
    else
      message.respond "You have to `!drill start` before you can end the drill"
    end
  end

  def handle_help(message)
    message.respond "Insert help message here"
  end

  def strip_prefix(content)
    if content.start_with? "!drill"
      content.sub("!drill ", "")
    else
      content
    end
  end
end