require 'guard'
require 'guard/guard'
require 'guard/rack/runner'
require 'rbconfig'

module Guard
  class Rack < ::Guard::Guard
    attr_reader :options, :runner

    DEFAULT_OPTIONS = {
        :port => 9292,
        :environment => 'development',
        :start_on_start => true,
        :force_run => false,
        :timeout => 20,
        :debugger => false,
        :config => 'config.ru'
      }

    def initialize(watchers = [], options = {})
      super
      @options = DEFAULT_OPTIONS.merge(options)
      @runner = ::Guard::RackRunner.new(@options)
    end

    def start
      server = options[:server] ? "#{options[:server]} and " : ""
      UI.info "Guard::Rack will now restart your app on port #{options[:port]} using #{server}#{options[:environment]} environment."
      reload if options[:start_on_start]
    end

    def reload
      UI.info "Restarting Rack..."
      Notifier.notify("Rack restarting on port #{options[:port]} in #{options[:environment]} environment...", :title => "Restarting Rack...", :image => :pending)
      if runner.restart
        UI.info "Rack restarted, pid #{runner.pid}"
        Notifier.notify("Rack restarted on port #{options[:port]}.", :title => "Rack restarted!", :image => :success)
      else
        UI.info "Rack NOT restarted, check your log files."
        Notifier.notify("Rack NOT restarted, check your log files.", :title => "Rack NOT restarted!", :image => :failed)
      end
    end

    def stop
      Notifier.notify("Until next time...", :title => "Rack shutting down.", :image => :pending)
      runner.stop
    end

    def run_on_changes(paths)
      reload
    end
  end
end