<?php
// *	@source		See SOURCE.txt for source and other copyright.
// *	@license	GNU General Public License version 3; see LICENSE.txt

class ModelCatalogProduct extends Model
{
	public function updateViewed($product_id)
	{
		$this->db->query('UPDATE ' . DB_PREFIX . "product SET viewed = (viewed + 1) WHERE product_id = '" . (int) $product_id . "'");
	}

	public function getProduct($product_id)
	{
		$query = $this->db->query('SELECT DISTINCT *, COALESCE(pp.price, p.price) AS price, COALESCE(pp.price_2, p.price_2) AS price_2, COALESCE(pp.price_3, p.price_3) AS price_3, p.product_id, pd.name AS name, p.image,  p.noindex AS noindex, m.name AS manufacturer, (SELECT price FROM ' . DB_PREFIX . "product_discount pd2 WHERE pd2.product_id = p.product_id AND pd2.customer_group_id = '" . (int) $this->config->get('config_customer_group_id') . "' AND pd2.quantity = '1' AND ((pd2.date_start = '0000-00-00' OR pd2.date_start < NOW()) AND (pd2.date_end = '0000-00-00' OR pd2.date_end > NOW())) ORDER BY pd2.priority ASC, pd2.price ASC LIMIT 1) AS discount, (SELECT price FROM " . DB_PREFIX . "product_special ps WHERE ps.product_id = p.product_id AND ps.customer_group_id = '" . (int) $this->config->get('config_customer_group_id') . "' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW())) ORDER BY ps.priority ASC, ps.price ASC LIMIT 1) AS special, (SELECT points FROM " . DB_PREFIX . "product_reward pr WHERE pr.product_id = p.product_id AND pr.customer_group_id = '" . (int) $this->config->get('config_customer_group_id') . "') AS reward, (SELECT ss.name FROM " . DB_PREFIX . "stock_status ss WHERE ss.stock_status_id = p.stock_status_id AND ss.language_id = '" . (int) $this->config->get('config_language_id') . "') AS stock_status, (SELECT wcd.unit FROM " . DB_PREFIX . "weight_class_description wcd WHERE p.weight_class_id = wcd.weight_class_id AND wcd.language_id = '" . (int) $this->config->get('config_language_id') . "') AS weight_class, (SELECT lcd.unit FROM " . DB_PREFIX . "length_class_description lcd WHERE p.length_class_id = lcd.length_class_id AND lcd.language_id = '" . (int) $this->config->get('config_language_id') . "') AS length_class, (SELECT AVG(rating) AS total FROM " . DB_PREFIX . "review r1 WHERE r1.product_id = p.product_id AND r1.status = '1' GROUP BY r1.product_id) AS rating, (SELECT COUNT(*) AS total FROM " . DB_PREFIX . "review r2 WHERE r2.product_id = p.product_id AND r2.status = '1' GROUP BY r2.product_id) AS reviews, p.sort_order FROM " . DB_PREFIX . 'product p LEFT JOIN ' . DB_PREFIX . 'product_description pd ON (p.product_id = pd.product_id) LEFT JOIN ' . DB_PREFIX . 'product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN ' . DB_PREFIX . 'manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN ' . DB_PREFIX . "product_prices pp ON (p.product_id = pp.product_id AND pp.store_id = '" . (int) $this->config->get('config_store_id') . "') WHERE p.product_id = '" . (int) $product_id . "' AND pd.language_id = '" . (int) $this->config->get('config_language_id') . "' AND p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int) $this->config->get('config_store_id') . "'");

		if ($query->num_rows) {
			return array(
				'product_id'                => $query->row['product_id'],
				'name'                      => $query->row['name'],
				'description'               => $query->row['description'],
				'description_first_rental'  => $query->row['description_first_rental'],
				'description_second_rental' => $query->row['description_second_rental'],
				'description_purchase'      => $query->row['description_purchase'],
				'description_terms'         => $query->row['description_terms'],
				'meta_title'                => $query->row['meta_title'],
				'noindex'                   => $query->row['noindex'],
				'meta_h1'                   => $query->row['meta_h1'],
				'meta_description'          => $query->row['meta_description'],
				'meta_keyword'              => $query->row['meta_keyword'],
				'tag'                       => $query->row['tag'],
				'model'                     => $query->row['model'],
				'sku'                       => $query->row['sku'],
				'upc'                       => $query->row['upc'],
				'ean'                       => $query->row['ean'],
				'jan'                       => $query->row['jan'],
				'isbn'                      => $query->row['isbn'],
				'mpn'                       => $query->row['mpn'],
				'location'                  => $query->row['location'],
				'quantity'                  => $query->row['quantity'],
				'stock_status'              => $query->row['stock_status'],
				'image'                     => $query->row['image'],
				'manufacturer_id'           => $query->row['manufacturer_id'],
				'manufacturer'              => $query->row['manufacturer'],
				'price'                     => ($query->row['discount'] ? $query->row['discount'] : $query->row['price']),
				'price_2'                   => $query->row['price_2'],
				'price_3'                   => $query->row['price_3'],
				'special'                   => $query->row['special'],
				'reward'                    => $query->row['reward'],
				'points'                    => $query->row['points'],
				'tax_class_id'              => $query->row['tax_class_id'],
				'date_available'            => $query->row['date_available'],
				'weight'                    => $query->row['weight'],
				'weight_class_id'           => $query->row['weight_class_id'],
				'length'                    => $query->row['length'],
				'width'                     => $query->row['width'],
				'height'                    => $query->row['height'],
				'length_class_id'           => $query->row['length_class_id'],
				'subtract'                  => $query->row['subtract'],
				'rating'                    => round($query->row['rating']),
				'reviews'                   => $query->row['reviews'] ? $query->row['reviews'] : 0,
				'minimum'                   => $query->row['minimum'],
				'sort_order'                => $query->row['sort_order'],
				'status'                    => $query->row['status'],
				'date_added'                => $query->row['date_added'],
				'date_modified'             => $query->row['date_modified'],
				'viewed'                    => $query->row['viewed']
			);
		} else {
			return false;
		}
	}

	public function getProducts($data = array())
	{
		$sql = 'SELECT p.product_id, (SELECT AVG(rating) AS total FROM ' . DB_PREFIX . "review r1 WHERE r1.product_id = p.product_id AND r1.status = '1' GROUP BY r1.product_id) AS rating, (SELECT price FROM " . DB_PREFIX . "product_discount pd2 WHERE pd2.product_id = p.product_id AND pd2.customer_group_id = '" . (int) $this->config->get('config_customer_group_id') . "' AND pd2.quantity = '1' AND ((pd2.date_start = '0000-00-00' OR pd2.date_start < NOW()) AND (pd2.date_end = '0000-00-00' OR pd2.date_end > NOW())) ORDER BY pd2.priority ASC, pd2.price ASC LIMIT 1) AS discount, (SELECT price FROM " . DB_PREFIX . "product_special ps WHERE ps.product_id = p.product_id AND ps.customer_group_id = '" . (int) $this->config->get('config_customer_group_id') . "' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW())) ORDER BY ps.priority ASC, ps.price ASC LIMIT 1) AS special";

		if (!empty($data['filter_name'])) {
			$sql .= ', ' . $this->getSearchRelevanceSql($data['filter_name']) . ' AS relevance';
		}

		if (!empty($data['filter_category_id'])) {
			if (!empty($data['filter_sub_category'])) {
				$sql .= ' FROM ' . DB_PREFIX . 'category_path cp LEFT JOIN ' . DB_PREFIX . 'product_to_category p2c ON (cp.category_id = p2c.category_id)';
			} else {
				$sql .= ' FROM ' . DB_PREFIX . 'product_to_category p2c';
			}

			if (!empty($data['filter_filter'])) {
				$sql .= ' LEFT JOIN ' . DB_PREFIX . 'product_filter pf ON (p2c.product_id = pf.product_id) LEFT JOIN ' . DB_PREFIX . 'product p ON (pf.product_id = p.product_id)';
			} else {
				$sql .= ' LEFT JOIN ' . DB_PREFIX . 'product p ON (p2c.product_id = p.product_id)';
			}
		} else {
			$sql .= ' FROM ' . DB_PREFIX . 'product p';
		}

		$sql .= ' LEFT JOIN ' . DB_PREFIX . 'product_description pd ON (p.product_id = pd.product_id) LEFT JOIN ' . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE pd.language_id = '" . (int) $this->config->get('config_language_id') . "' AND p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int) $this->config->get('config_store_id') . "'";

		if (!empty($data['filter_category_id'])) {
			if (!empty($data['filter_sub_category'])) {
				$sql .= " AND cp.path_id = '" . (int) $data['filter_category_id'] . "'";
			} else {
				$sql .= " AND p2c.category_id = '" . (int) $data['filter_category_id'] . "'";
			}

			if (!empty($data['filter_filter'])) {
				$implode = array();

				$filters = explode(',', $data['filter_filter']);

				foreach ($filters as $filter_id) {
					$implode[] = (int) $filter_id;
				}

				$sql .= ' AND pf.filter_id IN (' . implode(',', $implode) . ')';
			}
		}

		$sql .= $this->getSearchConditionSql($data);

		if (!empty($data['filter_manufacturer_id'])) {
			$sql .= " AND p.manufacturer_id = '" . (int) $data['filter_manufacturer_id'] . "'";
		}

		$sql .= ' GROUP BY p.product_id';

		$sort_data = array(
			'pd.name',
			'p.model',
			'p.quantity',
			'p.price',
			'rating',
			'p.sort_order',
			'p.date_added',
			'relevance'
		);

		if (isset($data['sort']) && $data['sort'] == 'relevance' && !empty($data['filter_name'])) {
			$sql .= ' ORDER BY relevance';
		} elseif (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
			if ($data['sort'] == 'pd.name' || $data['sort'] == 'p.model') {
				$sql .= ' ORDER BY LCASE(' . $data['sort'] . ')';
			} elseif ($data['sort'] == 'p.price') {
				$sql .= ' ORDER BY (CASE WHEN special IS NOT NULL THEN special WHEN discount IS NOT NULL THEN discount ELSE p.price END)';
			} else {
				$sql .= ' ORDER BY ' . $data['sort'];
			}
		} else {
			$sql .= ' ORDER BY p.sort_order';
		}

		if (isset($data['order']) && ($data['order'] == 'DESC')) {
			$sql .= ' DESC, LCASE(pd.name) DESC';
		} else {
			$sql .= ' ASC, LCASE(pd.name) ASC';
		}

		if (isset($data['start']) || isset($data['limit'])) {
			if ($data['start'] < 0) {
				$data['start'] = 0;
			}

			if ($data['limit'] < 1) {
				$data['limit'] = 20;
			}

			$sql .= ' LIMIT ' . (int) $data['start'] . ',' . (int) $data['limit'];
		}

		$product_data = array();

		$query = $this->db->query($sql);

		foreach ($query->rows as $result) {
			$product = $this->getProduct($result['product_id']);
			
			if ($product) {
				$product_data[$result['product_id']] = $product;
			}
		}

		return $product_data;
	}

	public function getProductSpecials($data = array())
	{
		$sql = 'SELECT DISTINCT ps.product_id, (SELECT AVG(rating) FROM ' . DB_PREFIX . "review r1 WHERE r1.product_id = ps.product_id AND r1.status = '1' GROUP BY r1.product_id) AS rating FROM " . DB_PREFIX . 'product_special ps LEFT JOIN ' . DB_PREFIX . 'product p ON (ps.product_id = p.product_id) LEFT JOIN ' . DB_PREFIX . 'product_description pd ON (p.product_id = pd.product_id) LEFT JOIN ' . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int) $this->config->get('config_store_id') . "' AND ps.customer_group_id = '" . (int) $this->config->get('config_customer_group_id') . "' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW())) GROUP BY ps.product_id";

		$sort_data = array(
			'pd.name',
			'p.model',
			'ps.price',
			'rating',
			'p.sort_order'
		);

		if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
			if ($data['sort'] == 'pd.name' || $data['sort'] == 'p.model') {
				$sql .= ' ORDER BY LCASE(' . $data['sort'] . ')';
			} else {
				$sql .= ' ORDER BY ' . $data['sort'];
			}
		} else {
			$sql .= ' ORDER BY p.sort_order';
		}

		if (isset($data['order']) && ($data['order'] == 'DESC')) {
			$sql .= ' DESC, LCASE(pd.name) DESC';
		} else {
			$sql .= ' ASC, LCASE(pd.name) ASC';
		}

		if (isset($data['start']) || isset($data['limit'])) {
			if ($data['start'] < 0) {
				$data['start'] = 0;
			}

			if ($data['limit'] < 1) {
				$data['limit'] = 20;
			}

			$sql .= ' LIMIT ' . (int) $data['start'] . ',' . (int) $data['limit'];
		}

		$product_data = array();

		$query = $this->db->query($sql);

		foreach ($query->rows as $result) {
			$product = $this->getProduct($result['product_id']);

			if ($product) {
				$product_data[$result['product_id']] = $product;
			}
		}

		return $product_data;
	}

	public function getLatestProducts($limit)
	{
		$product_data = $this->cache->get('product.latest.' . (int) $this->config->get('config_language_id') . '.' . (int) $this->config->get('config_store_id') . '.' . $this->config->get('config_customer_group_id') . '.' . (int) $limit);

		if (!$product_data) {
			$query = $this->db->query('SELECT p.product_id FROM ' . DB_PREFIX . 'product p LEFT JOIN ' . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int) $this->config->get('config_store_id') . "' ORDER BY p.date_added DESC LIMIT " . (int) $limit);

			foreach ($query->rows as $result) {
				$product = $this->getProduct($result['product_id']);

				if ($product) {
					$product_data[$result['product_id']] = $product;
				}
			}

			$this->cache->set('product.latest.' . (int) $this->config->get('config_language_id') . '.' . (int) $this->config->get('config_store_id') . '.' . $this->config->get('config_customer_group_id') . '.' . (int) $limit, $product_data);
		}

		return $product_data;
	}

	public function getPopularProducts($limit)
	{
		$product_data = $this->cache->get('product.popular.' . (int) $this->config->get('config_language_id') . '.' . (int) $this->config->get('config_store_id') . '.' . $this->config->get('config_customer_group_id') . '.' . (int) $limit);

		if (!$product_data) {
			$query = $this->db->query('SELECT p.product_id FROM ' . DB_PREFIX . 'product p LEFT JOIN ' . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int) $this->config->get('config_store_id') . "' ORDER BY p.viewed DESC, p.date_added DESC LIMIT " . (int) $limit);

			foreach ($query->rows as $result) {
				$product = $this->getProduct($result['product_id']);

				if ($product) {
					$product_data[$result['product_id']] = $product;
				}
			}

			$this->cache->set('product.popular.' . (int) $this->config->get('config_language_id') . '.' . (int) $this->config->get('config_store_id') . '.' . $this->config->get('config_customer_group_id') . '.' . (int) $limit, $product_data);
		}

		return $product_data;
	}

	public function getBestSellerProducts($limit)
	{
		$product_data = $this->cache->get('product.bestseller.' . (int) $this->config->get('config_language_id') . '.' . (int) $this->config->get('config_store_id') . '.' . $this->config->get('config_customer_group_id') . '.' . (int) $limit);

		if (!$product_data) {
			$product_data = array();

			$query = $this->db->query('SELECT op.product_id, SUM(op.quantity) AS total FROM ' . DB_PREFIX . 'order_product op LEFT JOIN `' . DB_PREFIX . 'order` o ON (op.order_id = o.order_id) LEFT JOIN `' . DB_PREFIX . 'product` p ON (op.product_id = p.product_id) LEFT JOIN ' . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE o.order_status_id > '0' AND p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int) $this->config->get('config_store_id') . "' GROUP BY op.product_id ORDER BY total DESC LIMIT " . (int) $limit);

			foreach ($query->rows as $result) {
				$product = $this->getProduct($result['product_id']);

				if ($product) {
					$product_data[$result['product_id']] = $product;
				}
			}

			$this->cache->set('product.bestseller.' . (int) $this->config->get('config_language_id') . '.' . (int) $this->config->get('config_store_id') . '.' . $this->config->get('config_customer_group_id') . '.' . (int) $limit, $product_data);
		}

		return $product_data;
	}

	public function getProductAttributes($product_id)
	{
		$product_attribute_group_data = array();

		$product_attribute_group_query = $this->db->query('SELECT ag.attribute_group_id, agd.name FROM ' . DB_PREFIX . 'product_attribute pa LEFT JOIN ' . DB_PREFIX . 'attribute a ON (pa.attribute_id = a.attribute_id) LEFT JOIN ' . DB_PREFIX . 'attribute_group ag ON (a.attribute_group_id = ag.attribute_group_id) LEFT JOIN ' . DB_PREFIX . "attribute_group_description agd ON (ag.attribute_group_id = agd.attribute_group_id) WHERE pa.product_id = '" . (int) $product_id . "' AND agd.language_id = '" . (int) $this->config->get('config_language_id') . "' GROUP BY ag.attribute_group_id ORDER BY ag.sort_order, agd.name");

		foreach ($product_attribute_group_query->rows as $product_attribute_group) {
			$product_attribute_data = array();

			$product_attribute_query = $this->db->query('SELECT a.attribute_id, ad.name, pa.text FROM ' . DB_PREFIX . 'product_attribute pa LEFT JOIN ' . DB_PREFIX . 'attribute a ON (pa.attribute_id = a.attribute_id) LEFT JOIN ' . DB_PREFIX . "attribute_description ad ON (a.attribute_id = ad.attribute_id) WHERE pa.product_id = '" . (int) $product_id . "' AND a.attribute_group_id = '" . (int) $product_attribute_group['attribute_group_id'] . "' AND ad.language_id = '" . (int) $this->config->get('config_language_id') . "' AND pa.language_id = '" . (int) $this->config->get('config_language_id') . "' ORDER BY a.sort_order, ad.name");

			foreach ($product_attribute_query->rows as $product_attribute) {
				$product_attribute_data[] = array(
					'attribute_id' => $product_attribute['attribute_id'],
					'name'         => $product_attribute['name'],
					'text'         => $product_attribute['text']
				);
			}

			$product_attribute_group_data[] = array(
				'attribute_group_id' => $product_attribute_group['attribute_group_id'],
				'name'               => $product_attribute_group['name'],
				'attribute'          => $product_attribute_data
			);
		}

		return $product_attribute_group_data;
	}

	public function getProductOptions($product_id)
	{
		$product_option_data = array();

		$product_option_query = $this->db->query('SELECT * FROM ' . DB_PREFIX . 'product_option po LEFT JOIN `' . DB_PREFIX . 'option` o ON (po.option_id = o.option_id) LEFT JOIN ' . DB_PREFIX . "option_description od ON (o.option_id = od.option_id) WHERE po.product_id = '" . (int) $product_id . "' AND od.language_id = '" . (int) $this->config->get('config_language_id') . "' ORDER BY o.sort_order");

		foreach ($product_option_query->rows as $product_option) {
			$product_option_value_data = array();

			$product_option_value_query = $this->db->query('SELECT * FROM ' . DB_PREFIX . 'product_option_value pov LEFT JOIN ' . DB_PREFIX . 'option_value ov ON (pov.option_value_id = ov.option_value_id) LEFT JOIN ' . DB_PREFIX . "option_value_description ovd ON (ov.option_value_id = ovd.option_value_id) WHERE pov.product_id = '" . (int) $product_id . "' AND pov.product_option_id = '" . (int) $product_option['product_option_id'] . "' AND ovd.language_id = '" . (int) $this->config->get('config_language_id') . "' ORDER BY ov.sort_order");

			foreach ($product_option_value_query->rows as $product_option_value) {
				$product_option_value_data[] = array(
					'product_option_value_id' => $product_option_value['product_option_value_id'],
					'option_value_id'         => $product_option_value['option_value_id'],
					'name'                    => $product_option_value['name'],
					'image'                   => $product_option_value['image'],
					'quantity'                => $product_option_value['quantity'],
					'subtract'                => $product_option_value['subtract'],
					'price'                   => $product_option_value['price'],
					'price_prefix'            => $product_option_value['price_prefix'],
					'weight'                  => $product_option_value['weight'],
					'weight_prefix'           => $product_option_value['weight_prefix']
				);
			}

			$product_option_data[] = array(
				'product_option_id'    => $product_option['product_option_id'],
				'product_option_value' => $product_option_value_data,
				'option_id'            => $product_option['option_id'],
				'name'                 => $product_option['name'],
				'type'                 => $product_option['type'],
				'value'                => $product_option['value'],
				'required'             => $product_option['required']
			);
		}

		return $product_option_data;
	}

	public function getProductDiscounts($product_id)
	{
		$query = $this->db->query('SELECT * FROM ' . DB_PREFIX . "product_discount WHERE product_id = '" . (int) $product_id . "' AND customer_group_id = '" . (int) $this->config->get('config_customer_group_id') . "' AND quantity > 1 AND ((date_start = '0000-00-00' OR date_start < NOW()) AND (date_end = '0000-00-00' OR date_end > NOW())) ORDER BY quantity ASC, priority ASC, price ASC");

		return $query->rows;
	}

	public function getProductImages($product_id)
	{
		$query = $this->db->query('SELECT * FROM ' . DB_PREFIX . "product_image WHERE product_id = '" . (int) $product_id . "' ORDER BY sort_order ASC");

		return $query->rows;
	}

	public function getProductRelated($product_id)
	{
		$product_data = array();

		$query = $this->db->query('SELECT * FROM ' . DB_PREFIX . 'product_related pr LEFT JOIN ' . DB_PREFIX . 'product p ON (pr.related_id = p.product_id) LEFT JOIN ' . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE pr.product_id = '" . (int) $product_id . "' AND p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int) $this->config->get('config_store_id') . "'");

		foreach ($query->rows as $result) {
			$product_data[$result['related_id']] = $this->getProduct($result['related_id']);
		}

		return $product_data;
	}

	public function getRandomProductsFromSameCategories($product_id, $limit = 4)
	{
		$product_data = array();
		$cache = 'product.related.random.' . (int) $this->config->get('config_store_id') . '.' . (int) $product_id . '.' . (int) $limit;
		$product_ids = $this->cache->get($cache);

		if (!$product_ids) {
			$product_ids = array();

			$query = $this->db->query('SELECT DISTINCT p.product_id FROM ' . DB_PREFIX . 'product_to_category source_p2c INNER JOIN ' . DB_PREFIX . 'product_to_category related_p2c ON (source_p2c.category_id = related_p2c.category_id) INNER JOIN ' . DB_PREFIX . 'product p ON (related_p2c.product_id = p.product_id) INNER JOIN ' . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE source_p2c.product_id = '" . (int) $product_id . "' AND p.product_id != '" . (int) $product_id . "' AND p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int) $this->config->get('config_store_id') . "' ORDER BY RAND() LIMIT " . (int) $limit);

			foreach ($query->rows as $result) {
				$product_ids[] = $result['product_id'];
			}

			$this->cache->set($cache, $product_ids);
		}

		foreach ($product_ids as $related_id) {
			$product = $this->getProduct($related_id);

			if ($product) {
				$product_data[$related_id] = $product;
			}
		}

		return $product_data;
	}

	public function getProductLayoutId($product_id)
	{
		$query = $this->db->query('SELECT * FROM ' . DB_PREFIX . "product_to_layout WHERE product_id = '" . (int) $product_id . "' AND store_id = '" . (int) $this->config->get('config_store_id') . "'");

		if ($query->num_rows) {
			return (int) $query->row['layout_id'];
		} else {
			return 0;
		}
	}

	public function getCategories($product_id)
	{
		$query = $this->db->query('SELECT * FROM ' . DB_PREFIX . "product_to_category WHERE product_id = '" . (int) $product_id . "'");

		return $query->rows;
	}

	public function getTotalProducts($data = array())
	{
		$sql = 'SELECT COUNT(DISTINCT p.product_id) AS total';

		if (!empty($data['filter_category_id'])) {
			if (!empty($data['filter_sub_category'])) {
				$sql .= ' FROM ' . DB_PREFIX . 'category_path cp LEFT JOIN ' . DB_PREFIX . 'product_to_category p2c ON (cp.category_id = p2c.category_id)';
			} else {
				$sql .= ' FROM ' . DB_PREFIX . 'product_to_category p2c';
			}

			if (!empty($data['filter_filter'])) {
				$sql .= ' LEFT JOIN ' . DB_PREFIX . 'product_filter pf ON (p2c.product_id = pf.product_id) LEFT JOIN ' . DB_PREFIX . 'product p ON (pf.product_id = p.product_id)';
			} else {
				$sql .= ' LEFT JOIN ' . DB_PREFIX . 'product p ON (p2c.product_id = p.product_id)';
			}
		} else {
			$sql .= ' FROM ' . DB_PREFIX . 'product p';
		}

		$sql .= ' LEFT JOIN ' . DB_PREFIX . 'product_description pd ON (p.product_id = pd.product_id) LEFT JOIN ' . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE pd.language_id = '" . (int) $this->config->get('config_language_id') . "' AND p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int) $this->config->get('config_store_id') . "'";

		if (!empty($data['filter_category_id'])) {
			if (!empty($data['filter_sub_category'])) {
				$sql .= " AND cp.path_id = '" . (int) $data['filter_category_id'] . "'";
			} else {
				$sql .= " AND p2c.category_id = '" . (int) $data['filter_category_id'] . "'";
			}

			if (!empty($data['filter_filter'])) {
				$implode = array();

				$filters = explode(',', $data['filter_filter']);

				foreach ($filters as $filter_id) {
					$implode[] = (int) $filter_id;
				}

				$sql .= ' AND pf.filter_id IN (' . implode(',', $implode) . ')';
			}
		}

		$sql .= $this->getSearchConditionSql($data);

		if (!empty($data['filter_manufacturer_id'])) {
			$sql .= " AND p.manufacturer_id = '" . (int) $data['filter_manufacturer_id'] . "'";
		}

		$query = $this->db->query($sql);

		return $query->row['total'];
	}

	private function getSearchConditionSql($data)
	{
		$groups = array();

		if (!empty($data['filter_name'])) {
			$conditions = array();

			foreach ($this->getSearchWords($data['filter_name']) as $word) {
				$word = $this->db->escape($word);
				$matches = array(
					"pd.name LIKE '%" . $word . "%'",
					"p.model LIKE '%" . $word . "%'",
					"p.sku LIKE '%" . $word . "%'",
					"p.upc LIKE '%" . $word . "%'",
					"p.ean LIKE '%" . $word . "%'",
					"p.jan LIKE '%" . $word . "%'",
					"p.isbn LIKE '%" . $word . "%'",
					"p.mpn LIKE '%" . $word . "%'",
					$this->getAttributeMatchSql($word)
				);

				if (!empty($data['filter_description'])) {
					$matches[] = "pd.description LIKE '%" . $word . "%'";
				}

				$conditions[] = '(' . implode(' OR ', $matches) . ')';
			}

			if ($conditions) {
				$groups[] = '(' . implode(' AND ', $conditions) . ')';
			}
		}

		if (!empty($data['filter_tag'])) {
			$conditions = array();

			foreach ($this->getSearchWords($data['filter_tag']) as $word) {
				$conditions[] = "pd.tag LIKE '%" . $this->db->escape($word) . "%'";
			}

			if ($conditions) {
				$groups[] = '(' . implode(' AND ', $conditions) . ')';
			}
		}

		return $groups ? ' AND (' . implode(' OR ', $groups) . ')' : '';
	}

	private function getSearchRelevanceSql($search)
	{
		$search = utf8_strtolower(trim(preg_replace('/\s+/', ' ', $search)));
		$escaped_search = $this->db->escape($search);
		$sql = "(CASE WHEN LCASE(pd.name) = '" . $escaped_search . "' THEN 120 WHEN LCASE(pd.name) LIKE '" . $escaped_search . "%' THEN 80 WHEN LCASE(pd.name) LIKE '%" . $escaped_search . "%' THEN 50 ELSE 0 END";
		$sql .= " + CASE WHEN LCASE(p.model) = '" . $escaped_search . "' THEN 110 WHEN LCASE(p.model) LIKE '" . $escaped_search . "%' THEN 70 WHEN LCASE(p.model) LIKE '%" . $escaped_search . "%' THEN 40 ELSE 0 END";
		$sql .= " + CASE WHEN LCASE(p.sku) = '" . $escaped_search . "' OR LCASE(p.upc) = '" . $escaped_search . "' OR LCASE(p.ean) = '" . $escaped_search . "' OR LCASE(p.jan) = '" . $escaped_search . "' OR LCASE(p.isbn) = '" . $escaped_search . "' OR LCASE(p.mpn) = '" . $escaped_search . "' THEN 90 ELSE 0 END";

		foreach ($this->getSearchWords($search) as $word) {
			$word = $this->db->escape($word);
			$sql .= " + CASE WHEN pd.name LIKE '%" . $word . "%' THEN 14 ELSE 0 END";
			$sql .= " + CASE WHEN p.model LIKE '%" . $word . "%' THEN 10 ELSE 0 END";
			$sql .= ' + CASE WHEN ' . $this->getAttributeMatchSql($word) . ' THEN 5 ELSE 0 END';
		}

		return $sql . ')';
	}

	private function getAttributeMatchSql($word)
	{
		$language_id = (int) $this->config->get('config_language_id');

		return 'EXISTS (SELECT 1 FROM ' . DB_PREFIX . 'product_attribute pa LEFT JOIN ' . DB_PREFIX . "attribute_description ad ON (pa.attribute_id = ad.attribute_id AND ad.language_id = '" . $language_id . "') WHERE pa.product_id = p.product_id AND pa.language_id = '" . $language_id . "' AND (pa.text LIKE '%" . $word . "%' OR ad.name LIKE '%" . $word . "%'))";
	}

	private function getSearchWords($search)
	{
		return array_filter(explode(' ', trim(preg_replace('/\s+/', ' ', $search))), 'strlen');
	}

	public function getProfile($product_id, $recurring_id)
	{
		$query = $this->db->query('SELECT * FROM ' . DB_PREFIX . 'recurring r JOIN ' . DB_PREFIX . "product_recurring pr ON (pr.recurring_id = r.recurring_id AND pr.product_id = '" . (int) $product_id . "') WHERE pr.recurring_id = '" . (int) $recurring_id . "' AND status = '1' AND pr.customer_group_id = '" . (int) $this->config->get('config_customer_group_id') . "'");

		return $query->row;
	}

	public function getProfiles($product_id)
	{
		$query = $this->db->query('SELECT rd.* FROM ' . DB_PREFIX . 'product_recurring pr JOIN ' . DB_PREFIX . 'recurring_description rd ON (rd.language_id = ' . (int) $this->config->get('config_language_id') . ' AND rd.recurring_id = pr.recurring_id) JOIN ' . DB_PREFIX . 'recurring r ON r.recurring_id = rd.recurring_id WHERE pr.product_id = ' . (int) $product_id . " AND status = '1' AND pr.customer_group_id = '" . (int) $this->config->get('config_customer_group_id') . "' ORDER BY sort_order ASC");

		return $query->rows;
	}

	public function getTotalProductSpecials()
	{
		$query = $this->db->query('SELECT COUNT(DISTINCT ps.product_id) AS total FROM ' . DB_PREFIX . 'product_special ps LEFT JOIN ' . DB_PREFIX . 'product p ON (ps.product_id = p.product_id) LEFT JOIN ' . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int) $this->config->get('config_store_id') . "' AND ps.customer_group_id = '" . (int) $this->config->get('config_customer_group_id') . "' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW()))");

		if (isset($query->row['total'])) {
			return $query->row['total'];
		} else {
			return 0;
		}
	}
}
