module ApplicationHelper
  def title(*args)
    res = content_tag :h1, class: 'page-title' do
      if args.first.is_a?(Symbol) && (args[1].respond_to?(:model_name) || args[1].class.respond_to?(:model_name))
        model = args[1].respond_to?(:model_name) ? args[1] : args[1].class
        if args.first == :index
          t('action.index.label', models: model.model_name.human_plural)
        else
          t("action.#{args.first}.label", model: model.model_name.human)
        end
      else
        args.first
      end
    end
    content_for :page_title, res
    res
  end

  # overwrite i18n l, to handle nil values
  def l(*args)
    return '' unless args.first
    super(*args)
  end

  def are_you_sure?
    t('helpers.links.are_you_sure')
  end

  def active_list
    active_list_object
  end

  def application_title
    'Qwaiter'
  end

  # Helper for displaying HTML currency values
  def currency(amount, opts={})
    amount ||= 0.0
    amount = amount.to_f
    #prefix = case company.currency
    #         when 'GBP' then '£ '
    #         when 'USD' then '$ '
    #         else '€ '
    #         end
    prefix = '€ '
    return (prefix + ("%.2f" % amount)).html_safe

    # Rails native is ambiguous since is uses translation hashes 
    options = {:unit => '€'}.merge(opts)
    number_to_currency(amount, options)
  end
  def list_open?
    active_list_id.present?
  end

  def active_list_id
    current_user.try(:active_list_id)
  end

  def no_content_given(model)
    t('helpers.list.no_records')
  end

  def slider_image
    image_tag('spinner.gif')
  end

  def show_boolean(bool)
    t("general.boolean.boolean_#{bool.present? ? 'yes' : 'no'}")
  end
end