require 'log4r'

module VagrantPlugins
  module Parallels
    module Action
      class SetName
        def initialize(app, env)
          @logger = Log4r::Logger.new('vagrant_parallels::action::setname')
          @app = app
        end

        def call(env)
          name = env[:machine].provider_config.name

          # If we already set the name before, then don't do anything
          sentinel = env[:machine].data_dir.join('action_set_name')
          if !name && sentinel.file?
            @logger.info('Default name was already set before, not doing it again.')
            return @app.call(env)
          end

          # If no name was manually set, then use a default
          if !name
            prefix = "#{env[:root_path].basename.to_s}_#{env[:machine].name}"
            prefix.gsub!(/[^-a-z0-9_]/i, '')
            # milliseconds + random number suffix to allow for simultaneous `vagrant up` of the same box in different dirs
            name = prefix + "_#{(Time.now.to_f * 1000.0).to_i}_#{rand(100000)}"
          end

          # Verify the name is not taken
          vms_names = env[:machine].provider.driver.read_vms
          raise VagrantPlugins::Parallels::Errors::VMNameExists, :name => name if \
            vms_names.has_key?(name) && vms_names[name] != env[:machine].id

          if vms_names.has_key?(name)
            @logger.info('Not setting the name because our name is already set.')
          else
            env[:ui].info(I18n.t(
                            'vagrant.actions.vm.set_name.setting_name', name: name))
            env[:machine].provider.driver.set_name(env[:machine].id, name)
          end

          # Create the sentinel
          sentinel.open('w') do |f|
            f.write(Time.now.to_i.to_s)
          end

          @app.call(env)
        end
      end
    end
  end
end
