module CodenjoyConnection

# File lib/codenjoy_connection.rb, line 22
def self.play(player, opts)
   url = prepare_url(opts)
   player = CodenjoyConnection::Player.new(player)
   set_connection(player,url)
end

# File lib/codenjoy_connection.rb, line 8
def self.prepare_url(opts = {})

  raise CodenjoyConnection::GenericError.new("Please, specify connection params.") if opts == {}

  host, port, username, player = opts[:host], opts[:port], opts[:username], opts[:player]
  game_url = opts[:game_url] ||'tetris-contest/ws?'

  raise CodenjoyConnection::GenericError.new("Please, specify a host for connection.") unless host
  raise CodenjoyConnection::GenericError.new("Please, specify a port for connection.") unless port
  raise CodenjoyConnection::GenericError.new("Please, specify a username for connection.") unless username

  "ws://#{host}:#{port}/#{game_url}user=#{username}"
end

# File lib/codenjoy_connection.rb, line 28
def self.set_connection(player,url)
  EM.run do
    ws = Faye::WebSocket::Client.new(url)
    ws.on :message do |event|
      p [:message, event.data]
      player.process_data(event.data)
      ws.send(player.make_step)
    end
  end
end