<?php
/* --------------------------------------------------------------
   GoogleRichSnippetContentView.inc.php 2018-11-12
   Gambio GmbH
   http://www.gambio.de
   Copyright (c) 2018 Gambio GmbH
   Released under the GNU General Public License (Version 2)
   [http://www.gnu.org/licenses/gpl-2.0.html]
   --------------------------------------------------------------
*/

/**
 * Class GoogleRichSnippetContentView
 */
class GoogleRichSnippetContentView extends ContentView
{
	protected $active;
	protected $fsk18_purchasable;
	protected $price_status;
	protected $quantity;
	protected $date_available;
	protected $price;
	protected $currency;
	protected $products_name;
	protected $breadcrumb_array;
	protected $breadcrumb_separator;
	protected $review_date_created;
	protected $rating;
	protected $rating_count;

	
	public function __construct()
	{
		parent::__construct();
		
		$this->active = true;
	}


	/**
	 * @return bool
	 */
	protected function is_rich_snippet_active()
	{
		$t_uninitialized_array = $this->get_uninitialized_variables(['fsk18_purchasable', 'quantity', 'price_status', 'active']);
		
		if(!empty($t_uninitialized_array))
		{
			trigger_error('Variable(s) ' . implode(', ', $t_uninitialized_array) . ' do(es) not exist in class '
			              . get_class($this) . ' or is/are null', E_USER_ERROR);
		}
		
		$isActive = ((bool)$this->fsk18_purchasable === false
		             && (STOCK_ALLOW_CHECKOUT === 'true' || (($this->quantity > 0) && STOCK_ALLOW_CHECKOUT === 'false'))
		             && (string)$this->price_status === '0'
		             && (bool)$this->active === true);
		
		return $isActive;
	}


	/**
	 * @return string
	 */
	public function get_breadcrumb_snippet()
	{
		$t_uninitialized_array = $this->get_uninitialized_variables(['breadcrumb_array', 'breadcrumb_separator', 'active']);
		if(!empty($t_uninitialized_array))
		{
			trigger_error('Variable(s) ' . implode(', ', $t_uninitialized_array) . ' do(es) not exist in class '
			              . get_class($this) . ' or is/are null', E_USER_ERROR);
			return '';
		}
        
        $ldJsonData = [];
        if ($this->active) {
            $currentUrl = GM_HTTP_SERVER . htmlspecialchars($_SERVER['REQUEST_URI'], ENT_QUOTES, 'UTF-8');
            $ldJsonData = [
                '@context'        => 'https://schema.org',
                '@type'           => 'BreadcrumbList',
                'itemListElement' => []
            ];
            $position   = 0;
            foreach ($this->breadcrumb_array as $breadcrumbItem) {
                $position++;
                $link                            = $position
                                                   === count($this->breadcrumb_array) ? $currentUrl : $breadcrumbItem['link'];
                $ldJsonData['itemListElement'][] = [
                    '@type'    => 'ListItem',
                    'position' => $position,
                    'name'     => $breadcrumbItem['title'],
                    'item'     => $link,
                ];
            }
            $ldJson = json_encode($ldJsonData);
        }

		$this->set_content_template('snippets/navigation/breadcrumb_content.html');
		$this->set_flat_assigns(true);
		$this->set_content_data('is_active', $this->active);
		$this->set_content_data('breadcrumb_array', $this->breadcrumb_array);
        $this->set_content_data('breadcrumb_ldjson', $ldJson);
        $this->set_content_data('breadcrumb_separator', $this->breadcrumb_separator);
        $this->set_content_data('current_url', $currentUrl);

		return $this->get_html();
	}



	/**
	 * @return array
	 * @link https://developers.google.com/structured-data/rich-snippets/reviews
	 */
	public function get_review_snippet()
	{
		$t_rich_snippet_array = array();
		$t_rich_snippet_array['product_itemprop_reviews'] = '';
		$t_rich_snippet_array['review_itemscope'] = '';
		$t_rich_snippet_array['review_itemprop_about'] = '';
		$t_rich_snippet_array['review_itemprop_reviewBody'] = '';
		$t_rich_snippet_array['review_itemprop_author'] = '';
		$t_rich_snippet_array['author_itemscope'] = '';
		$t_rich_snippet_array['author_itemprop_name'] = '';
		$t_rich_snippet_array['review_itemprop_datePublished'] = '';
		$t_rich_snippet_array['review_itemprop_reviewRating'] = '';
		$t_rich_snippet_array['rating_itemscope'] = '';
		$t_rich_snippet_array['rating_itemprop_ratingValue'] = '';
		
		
		$t_uninitialized_array = $this->get_uninitialized_variables(array('products_name', 'review_date_created', 'rating'));
		
		if(empty($t_uninitialized_array))
		{
			if($this->is_rich_snippet_active())
			{   
				$t_rich_snippet_array['product_itemprop_reviews'] = ' itemprop="review"';

				$t_rich_snippet_array['review_itemscope'] = ' itemscope="itemscope" itemtype="http://schema.org/Review"';
				$t_rich_snippet_array['review_itemprop_about'] = ' <meta itemprop="about" content="' . $this->products_name . '">';
				$t_rich_snippet_array['review_itemprop_reviewBody'] = ' itemprop="reviewBody"';
				$t_rich_snippet_array['review_itemprop_author'] = ' itemprop="author"';
				
				$t_rich_snippet_array['author_itemscope'] = ' itemscope="itemscope" itemtype="http://schema.org/Person"';
				$t_rich_snippet_array['author_itemprop_name'] = ' itemprop="name"';

				$t_rich_snippet_array['review_itemprop_datePublished'] = '<meta itemprop="datePublished" content="' . $this->review_date_created . '">';
				$t_rich_snippet_array['review_itemprop_reviewRating'] = ' itemprop="reviewRating"';

				$t_rich_snippet_array['rating_itemscope'] = ' itemscope="itemscope" itemtype="http://schema.org/Rating"';
				$t_rich_snippet_array['rating_itemprop_ratingValue'] = '<meta itemprop="ratingValue" content="' . $this->rating . '">';
			}
		}
		else
		{
			trigger_error("Variable(s) " . implode(', ', $t_uninitialized_array) . " do(es) not exist in class " . get_class($this) . " or is/are null", E_USER_ERROR);
		}
		
		return $t_rich_snippet_array;
	}


	/**
	 * @param boolean $p_active
	 */
	public function set_active($p_active)
	{
		$this->active = (bool)$p_active;
	}


	/**
	 * @return boolean
	 */
	public function get_active()
	{
		return $this->active;
	}


	/**
	 * @param array $p_breadcrumb_array
	 */
	public function set_breadcrumb_array(array $p_breadcrumb_array)
	{
		$this->breadcrumb_array = $p_breadcrumb_array;
	}


	/**
	 * @return array
	 */
	public function get_breadcrumb_array()
	{
		return $this->breadcrumb_array;
	}


	/**
	 * @param string $p_breadcrumb_separator
	 */
	public function set_breadcrumb_separator($p_breadcrumb_separator)
	{
		$this->breadcrumb_separator = (string)$p_breadcrumb_separator;
	}


	/**
	 * @return string
	 */
	public function get_breadcrumb_separator()
	{
		return $this->breadcrumb_separator;
	}


	/**
	 * @param string $p_currency
	 */
	public function set_currency($p_currency)
	{
		$this->currency = (string)$p_currency;
	}


	/**
	 * @return string
	 */
	public function get_currency()
	{
		return $this->currency;
	}


	/**
	 * @param string $p_date_available
	 */
	public function set_date_available($p_date_available)
	{
		$this->date_available = (string)$p_date_available;
	}


	/**
	 * @return string
	 */
	public function get_date_available()
	{
		return $this->date_available;
	}


	/**
	 * @param boolean $p_fsk18_purchasable
	 */
	public function set_fsk18($p_fsk18_purchasable)
	{
		$this->fsk18_purchasable = (bool)$p_fsk18_purchasable;
	}


	/**
	 * @return boolean
	 */
	public function get_fsk18_purchasable()
	{
		return $this->fsk18_purchasable;
	}


	/**
	 * @param double $p_price
	 */
	public function set_price($p_price)
	{
		$this->price = (double)$p_price;
	}


	/**
	 * @return double
	 */
	public function get_price()
	{
		return $this->price;
	}


	/**
	 * @param int $p_price_status
	 */
	public function set_price_status($p_price_status)
	{
		$this->price_status = (int)$p_price_status;
	}


	/**
	 * @return int
	 */
	public function get_price_status()
	{
		return $this->price_status;
	}


	/**
	 * @param string $p_products_name
	 */
	public function set_products_name($p_products_name)
	{
		$this->products_name = (string)$p_products_name;
	}


	/**
	 * @return string
	 */
	public function get_products_name()
	{
		return $this->products_name;
	}


	/**
	 * @param double $p_quantity
	 */
	public function set_quantity($p_quantity)
	{
		$this->quantity = (double)$p_quantity;
	}


	/**
	 * @return double
	 */
	public function get_quantity()
	{
		return $this->quantity;
	}


	/**
	 * @param int $p_rating
	 */
	public function set_rating($p_rating)
	{
		$this->rating = (int)$p_rating;
	}


	/**
	 * @return int
	 */
	public function get_rating()
	{
		return $this->rating;
	}
	
	
	/**
	 * @param int $p_rating_count
	 */
	public function set_rating_count($p_rating_count)
	{
		$this->rating_count = (int)$p_rating_count;
	}
	
	
	/**
	 * @return int
	 */
	public function get_rating_count()
	{
		return $this->rating_count;
	}


	/**
	 * @param string $p_review_date_created
	 */
	public function set_review_date_created($p_review_date_created)
	{
		$this->review_date_created = (string)$p_review_date_created;
	}


	/**
	 * @return string
	 */
	public function get_review_date_created()
	{
		return $this->review_date_created;
	}
}