module OperatingSystemHelper
  def self.list_operating_system new_operating_systems
    return []  if new_operating_systems.nil? or new_operating_systems.length == 0
    list_operating_system = []

    new_operating_systems.each do |new_operating_system|
      unless SoftwareHelper.all_table_is_empty? new_operating_system, ["operating_system_name_id"]
        operating_system = OperatingSystem.new
        operating_system.operating_system_name = OperatingSystemName.find(new_operating_system[:operating_system_name_id])
        operating_system.version = new_operating_system[:version]
        list_operating_system << operating_system
      end
    end
    list_operating_system
  end

  def self.valid_list_operating_system? list_operating_system
    return false if list_operating_system.nil? or list_operating_system.length == 0

    list_operating_system.each do |operating_system|
      return false unless operating_system.valid?
    end
    true
  end

  def self.operating_system_as_tables (list_operating_system, have_delete_button = true, show_information = false)
    extend(
      ActionView::Helpers::TagHelper,
      ActionView::Helpers::FormTagHelper,
      ActionView::Helpers::UrlHelper,
      ActionView::Helpers::FormOptionsHelper,
      ApplicationHelper
    )

    lambdas_list = []

    if not show_information
      return operating_system_html_structure({:operating_system_name_id => "", :version => ""}, have_delete_button) if list_operating_system.nil?    
    
    list_operating_system.each do |operating_system|
      lambdas_list << operating_system_html_structure(operating_system,have_delete_button)
    end
    else
    list_operating_system.each do |operating_system|
      lambdas_list << operating_system_html_structure(operating_system)
    end
    end

    lambdas_list
  end

  def self.operating_system_html_structure (operating_system_data,have_delete_button = true)
    Proc::new do
      content_tag('table',
        content_tag('tr',
          content_tag('td', label_tag(_("Name")))+
          content_tag('td', select_tag("operating_system[][operating_system_name_id]", SoftwareHelper.select_options(OperatingSystemName.all, operating_system_data[:operating_system_name_id]) ))+
          content_tag('td')
        )+

        content_tag('tr',
          content_tag('td', label_tag(_("Version")))+
          content_tag('td', text_field_tag("operating_system[][version]", operating_system_data[:version]))+
          if have_delete_button
            content_tag('td',
              button_without_text(:delete, _('Delete'), "#" , :class=>"delete-dynamic-table"),
              :align => 'right'
            )
          else
            content_tag('td', "")
          end
        ),:class => 'dynamic-table library-table'
      )
    end
  end

  def self.add_dynamic_table
    operating_system_as_tables(nil).call
  end
end