require 'irb'

require 'aruba/api'
require 'aruba/console/help'

# Aruba
module Aruba
  # Consule
  class Console
    # Start the aruba console
    #
    # rubocop:disable Metrics/MethodLength
    def start
      # Start IRB with current context:
      # http://stackoverflow.com/questions/4189818/how-to-run-irb-start-in-context-of-current-class
      ARGV.clear
      IRB.setup nil

      IRB.conf[:IRB_NAME] = 'aruba'

      IRB.conf[:PROMPT] = {}
      IRB.conf[:PROMPT][:ARUBA] = {
        :PROMPT_I => '%N:%03n:%i> ',
        :PROMPT_S => '%N:%03n:%i%l ',
        :PROMPT_C => '%N:%03n:%i* ',
        :RETURN => "# => %s\n"
      }
      IRB.conf[:PROMPT_MODE] = :ARUBA

      IRB.conf[:RC] = false

      require 'irb/completion'
      require 'irb/ext/save-history'
      IRB.conf[:READLINE] = true
      IRB.conf[:SAVE_HISTORY] = 1000
      IRB.conf[:HISTORY_FILE] = Aruba.config.console_history_file

      context = Class.new do
        include Aruba::Api
        include Aruba::Console::Help

        def initialize
          setup_aruba
        end

        def inspect
          'nil'
        end
      end

      irb = IRB::Irb.new(IRB::WorkSpace.new(context.new))
      IRB.conf[:MAIN_CONTEXT] = irb.context

      trap("SIGINT") do
        irb.signal_handle
      end

      begin
        catch(:IRB_EXIT) do
          irb.eval_input
        end
      ensure
        IRB.irb_at_exit
      end
    end
    # rubocop:enable Metrics/MethodLength
  end
end