=begin
  Camaleon CMS is a content management system
  Copyright (C) 2015 by Owen Peredo Diaz
  Email: owenperedo@gmail.com
  This program is free software: you can redistribute it and/or modify   it under the terms of the GNU Affero General Public License as  published by the Free Software Foundation, either version 3 of the  License, or (at your option) any later version.
  This program is distributed in the hope that it will be useful,  but WITHOUT ANY WARRANTY; without even the implied warranty of  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the  GNU Affero General Public License (GPLv3) for more details.
=end
module Frontend::SeoHelper
  def init_seo(model)
    @_seo_info = model.the_seo

  end

  # add seo attributes to your page
  # you can pass custom data to overwrite default data generated by the system
  def the_seo(data = {})
    (@_seo_info ||= {}).merge(data)
  end

  # create seo attributes with options + default attributes
  def build_seo(options)
    options[:image] = options[:image] || current_site.get_option("screenshot", current_site.the_logo)
    options[:title] = I18n.transliterate(is_home? ? current_site.the_title : "#{current_site.the_title} | #{options[:title]}")
    options[:description] = I18n.transliterate(is_home? ? current_site.the_option("seo_description") : options[:description].to_s)
    options[:keywords] = I18n.transliterate(is_home? ? current_site.the_option("keywords") : options[:keywords].to_s)
    options[:url] = request.original_url
    s = {
       :title => options[:title],
       :description => options[:description],
       :keywords => options[:keywords],
       :image => options[:image],
       :author => current_site.get_option("seo_author"),
       :og => {
           :title    => options[:title],
           :description    => options[:description],
           :type     => 'website',
           :url      => request.original_url,
           :image    => options[:image]
       },
       :twitter => {
           :card => 'summary',
           :title    => options[:title],
           :description    => options[:description],
           :url      => request.original_url,
           :image    => options[:image],
           :site => current_site.get_option("twitter_card"),
           :creator => current_site.get_option("twitter_card"),
           :domain => request.host
       },
       alternate: { "application/rss+xml"=> rss_url }
      }

    l = current_site.get_languages
    l.each{|_l| s[:alternate][_l] = current_site.the_url(locale: _l) } if l.size > 1

    # call all hooks for seo
    r = {seo_data: s, object: options[:object]}; hooks_run("seo", r)
    r[:seo_data]
  end
end