echo server

class UserEchoServer
   def initialize(input=STDIN, output=STDOUT)
      @input = input
      @output = output
      @view = View.new(@output)
   end

   def echo_server_start
      @view.welcome_and_instruction_message
      @user_input = readline
      while exit_entered? == false
        @output.puts @user_input
        @user_input = readline
      end
      @view.goodbye_message
   end

  def readline
    @input.readline.chomp
  rescue EOFError
    "exit"
  end

    def exit_entered?
        @user_input == "exit"
    end
end

class View
    def initialize(output=STDOUT)
       @output = output
    end

    def welcome_and_instruction_message
        @output.print "Welcome!\n"
        @output.print "Enter anything or exit to finish:\n"
    end

    def goodbye_message
        @output.print "Goodbye!\n"
    end
end

# server = UserEchoServer.new
# server.echo_server_start