$:.unshift(File.dirname(__FILE__))
%w{ linux mac windows cygwin }.each { |x| require "autotest_notification/#{x}" }

module AutotestNotification
  IMAGES_DIRECTORY = File.expand_path(File.dirname(__FILE__) + "/../images/")
  SUCCESS_IMAGE    = "#{IMAGES_DIRECTORY}/pass.png"
  FAIL_IMAGE       = "#{IMAGES_DIRECTORY}/fail.png"

  EXPIRATION_IN_SECONDS = 3

  Autotest.add_hook :ran_command do |at|
    result = at.results.is_a?(Array) ? at.results.last : at.results.split("\n").last

    if result
      %w{ test assertion error example pending failure }.each { |x| instance_variable_set "@#{x}s", result[/(\d+) #{x}/, 1].to_i }

      case result
      when /test/
        code = 31 if @failures > 0 || @errors > 0
        msg  = unit_test_message(@tests, @assertions, @failures, @errors)
      when /example/
        code = (@failures > 0) ? 31 : (@pendings > 0) ? 33 : 32
        msg  = rspec_message(@examples, @failures, @pendings)
      else
        code = 31
        msg  = "1 exception occurred"
        @failures = 1
      end

      if @failures > 0 || @errors > 0
        notify "FAIL", msg, FAIL_IMAGE, @failures + @errors, 2
      else
        notify "Pass", msg, SUCCESS_IMAGE
      end

      puts "\e[#{code}m#{'=' * 80}\e[0m\n\n"
    end
  end

  class << self
    def notify(title, msg, img = SUCCESS_IMAGE, failures = 0, pri = 0)
      case RUBY_PLATFORM
      when /linux/
        Linux.notify(title, msg, img, failures)
      when /darwin/
        Mac.notify(title, msg, img, failures, pri)
      when /cygwin/
        Cygwin.notify(title, msg, img)
      when /mswin/
        Windows.notify(title, msg, img)
      end
    end

    def pluralize(text, number)
      "#{number} #{text}#{'s' if number != 1}"
    end

    def unit_test_message(tests, assertions, failures, errors)
      "#{pluralize('test', tests)}, #{pluralize('assertion', assertions)}, #{pluralize('failure', failures)}, #{pluralize('error', errors)}"
    end

    def rspec_message(examples, failures, pendings)
      "#{pluralize('example', examples)}, #{pluralize('failure', failures)}, #{pendings} pending"
    end
  end
end