<?php
/*------------------------------------------------------------------------------
  $Id$

  AbanteCart, Ideal OpenSource Ecommerce Solution
  http://www.AbanteCart.com

  Copyright © 2011-2017 Belavier Commerce LLC

  This source file is subject to Open Software License (OSL 3.0)
  License details is bundled with this package in the file LICENSE.txt.
  It is also available at this URL:
  <http://www.opensource.org/licenses/OSL-3.0>

 UPGRADE NOTE:
   Do not edit or add to this file if you wish to upgrade AbanteCart to newer
   versions in the future. If you wish to customize AbanteCart for your
   needs please refer to http://www.AbanteCart.com for more information.
------------------------------------------------------------------------------*/
if (! defined ( 'DIR_CORE' )) {
	header ( 'Location: static_pages/' );
}
class ModelCatalogReview extends Model {
	/**
	 * @param int $product_id
	 * @param array $data
	 * @return int
	 */
	public function addReview($product_id, $data) {
		$this->db->query("INSERT INTO " . $this->db->table("reviews") . " 
						  SET author = '" . $this->db->escape($data['name']) . "',
						      customer_id = '" . (int)$this->customer->getId() . "',
						      product_id = '" . (int)$product_id . "',
						      text = '" . $this->db->escape(strip_tags($data['text'])) . "',
						      rating = '" . (int)$data['rating'] . "',
						      date_added = NOW()");
		
		$review_id = $this->db->getLastId();
		//notify administrator of pending review approval
		$language = new ALanguage($this->registry);
		$language->load('product/product');

		$msg_text = sprintf($language->get('text_pending_review_approval'), $product_id, $review_id);
		$msg = new AMessage();
		$msg->saveNotice($language->get('text_new_review'), $msg_text);
				
		$this->cache->remove('product');

		return $review_id;
	}

	/**
	 * @param int $product_id
	 * @param int $start
	 * @param int $limit
	 * @return array
	 */
	public function getReviewsByProductId($product_id, $start = 0, $limit = 20) {
		$query = $this->db->query("SELECT r.review_id,
										  r.author,
										  r.rating,
										  r.text,
										  p.product_id,
										  pd.name,
										  p.price,
										  r.date_added
							        FROM " . $this->db->table("reviews") . " r
							        LEFT JOIN " . $this->db->table("products") . " p ON (r.product_id = p.product_id)
							        LEFT JOIN " . $this->db->table("product_descriptions") . " pd ON (p.product_id = pd.product_id)
							        WHERE p.product_id = '" . (int)$product_id . "'
							                AND p.date_available <= NOW()
							                AND p.status = '1'
							                AND r.status = '1'
							                AND pd.language_id = '" . (int)$this->config->get('storefront_language_id') . "'
							        ORDER BY r.date_added DESC
							        LIMIT " . (int)$start . "," . (int)$limit);
		
		return $query->rows;
	}

	/**
	 * @param int $product_id
	 * @return int
	 */
	public function getAverageRating($product_id) {
		$cache = $this->cache->pull('product.rating.'.(int)$product_id);
		if($cache === false){
			$query = $this->db->query( "SELECT AVG(rating) AS total
										FROM " . $this->db->table("reviews") . " 
										WHERE status = '1' AND product_id = '" . (int)$product_id . "'
										GROUP BY product_id");
			$cache  = (int)$query->row['total'];
			$this->cache->push('product.rating.'.(int)$product_id, $cache);
		}
		return $cache;
	}

	/**
	 * @return int
	 */
	public function getTotalReviews() {
		$cache = $this->cache->pull('product.reviews.totals');
		if($cache === false){
		$query = $this->db->query( "SELECT COUNT(*) AS total
									FROM " . $this->db->table("reviews") . " r
									LEFT JOIN " . $this->db->table("products") . " p ON (r.product_id = p.product_id)
									WHERE p.date_available <= NOW()
										AND p.status = '1'
										AND r.status = '1'");
			$cache = (int)$query->row['total'];
			$this->cache->push('product.reviews.totals', $cache);
		}
		return $cache;
	}

	/**
	 * @param int $product_id
	 * @return int
	 */
	public function getTotalReviewsByProductId($product_id) {
		$language_id = (int)$this->config->get('storefront_language_id');
		$cache_key = 'product.reviews.totals.'.$product_id.'.lang_'.$language_id;
		$cache = $this->cache->pull($cache_key);
		if($cache === false){
			$query = $this->db->query( "SELECT COUNT(*) AS total
										FROM " . $this->db->table("reviews") . " r
										LEFT JOIN " . $this->db->table("products") . " p ON (r.product_id = p.product_id)
										LEFT JOIN " . $this->db->table("product_descriptions") . " pd ON (p.product_id = pd.product_id)
										WHERE p.product_id = '" . (int)$product_id . "'
											AND p.date_available <= NOW()
											AND p.status = '1'
											AND r.status = '1'
											AND pd.language_id = '" . $language_id . "'");

			$cache = (int)$query->row['total'];
			$this->cache->push($cache_key, $cache);
		}
		return $cache;
	}
}