module SoftwareLanguageHelper

  def self.valid_language? language
    return false if SoftwareHelper.all_table_is_empty?(language)

    programming_language_id_list = ProgrammingLanguage.
                                     select(:id).
                                     collect { |dd| dd.id }

    return programming_language_id_list.include?(
             language[:programming_language_id].to_i
           )
  end

  def self.list_language new_languages
    return [] if new_languages.nil? or new_languages.length == 0
    list_languages = []

    new_languages.each do |new_language|
      if valid_language? new_language
        language = SoftwareLanguage.new
        language.programming_language =
          ProgrammingLanguage.find(new_language[:programming_language_id])
        language.version = new_language[:version]
        language.operating_system = new_language[:operating_system]
        list_languages << language
      end
    end

    list_languages
  end

  def self.valid_list_language? list_languages
    return false if list_languages.nil? or list_languages.length == 0

    list_languages.each do |language|
      return false unless language.valid?
    end

    true
  end

  def self.language_as_tables(list_languages, show_information = false)
    extend(
      ActionView::Helpers::TagHelper,
      ActionView::Helpers::FormTagHelper,
      ActionView::Helpers::UrlHelper,
      ActionView::Helpers::FormOptionsHelper,
      ApplicationHelper
    )

    lambdas_list = []

    if not show_information
      return language_html_structure(
               {:programming_language_id => "",
                :version => "",
                :operating_system => ""}
             ) if list_languages.nil?

      list_languages.each do |language|
        lambdas_list << language_html_structure(language)
      end

    else
      list_languages.each do |language|
        lambdas_list << language_html_show_structure(language)
      end

    end

    lambdas_list
  end

  def self.language_html_structure(language_data)
    language_name = if language_data[:programming_language_id].blank?
      ""
    else
      ProgrammingLanguage.find(
        language_data[:programming_language_id],
        :select=>"name"
      ).name
    end

    Proc::new do
      content_tag('table',
        content_tag(
          'tr',
          content_tag('td', label_tag(_("Language Name: "))) +
          content_tag(
            'td',
            text_field_tag(
              "language_autocomplete",
              language_name,
              :class=>"language_autocomplete",
              :placeholder=>_("Autocomplete field, type something")
            ) +
            content_tag(
              'div',
              _("Pick an item on the list"),
               :class=>"autocomplete_validation_message hide-field")
            ) +
          content_tag(
            'td',
            hidden_field_tag("language[][programming_language_id]",
            language_data[:programming_language_id],
            :class=>"programming_language_id",
            data:{label:language_name})
          )
        )+

        content_tag(
          'tr',
          content_tag('td', label_tag(_("Version")))+
          content_tag(
            'td',
            text_field_tag("language[][version]",language_data[:version])
          ) +
          content_tag('td')
        )+

        content_tag(
          'tr',
          content_tag('td', label_tag(_("Operating System")))+
          content_tag(
            'td',
            text_field_tag(
              "language[][operating_system]",
              language_data[:operating_system]
            )
          ) +
          content_tag('td',
            button_without_text(
              :delete,
              _('Delete'),
              "#",
              :class=>"delete-dynamic-table"
            ),
            :align => 'right'
          )
        ), :class => 'dynamic-table software-language-table'
      )
    end
  end

  def self.language_html_show_structure(language)
     Proc::new do
      content_tag(
        'table',
        content_tag(
          'tr',
          content_tag('td', label_tag(_("Language Name: ")))+
          content_tag(
            'td',
            ProgrammingLanguage.where(
              :id => language[:programming_language_id]
            )[0].name
          )+
          content_tag('td')
        )+

        content_tag('tr',
          content_tag('td', label_tag(_("Version")))+
          content_tag('td', language[:version])+
          content_tag('td')
        )+

        content_tag('tr',
          content_tag('td', label_tag(_("Operating System")))+
          content_tag('td', language[:operating_system])+
          content_tag('td', "")
        ), :class => 'dynamic-table software-language-table'
      )
    end
  end

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