module ApplicationHelper

  def timestamp(time)
    time ? time.strftime('%D %R') : ''
  end

  def nav_items
    [
        nav_item('Recipes', recipes_path, 'recipes'),
        nav_item('Ingredients', ingredients_path, 'ingredients'),
        nav_item('Calculator', calculator_path, 'calculator'),
        nav_item('About', about_path, 'home')
    ]
  end

  def profile_nav_items
    if current_user
      [content_tag('li', class: 'dropdown') do
         li_cnt = ''.html_safe

         li_cnt << link_to('#', class: 'dropdown-toggle', data: {toggle: 'dropdown'}, role: 'button') do
           ''.html_safe << "#{current_user.display_name}" << content_tag('span', '', class: 'caret')
         end

         li_cnt << content_tag('ul', class: 'dropdown-menu') do
           ''.html_safe << nav_item('Profile', edit_user_path) << nav_item('Logout', logout_path)
         end

         li_cnt
      end]
    else
      [nav_item('Login', login_path)]
    end
  end

  def nav_item(name, url, controller = nil)
    content_tag('li', link_to(name, url), class: active_for_controller(controller))
  end

  def active_for_controller(controller)
    if current_controller == controller
      'active'
    else
      ''
    end
  end

  def current_controller
    params[:controller]
  end
end