<?php
class ModelCatalogProduct extends Model {
	public function getProduct($product_id) {
		$query = $this->db->query("SELECT DISTINCT *, pd.name AS name, p.image, m.name AS manufacturer, ss.name AS stock FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN " . DB_PREFIX . "stock_status ss ON (p.stock_status_id = ss.stock_status_id) WHERE p.product_id = '" . (int)$product_id . "' AND pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p.date_available <= NOW() AND p.status = '1'");

		return $query->row;
	}

	public function getProducts() {
		$query = $this->db->query("SELECT DISTINCT *, pd.name AS name, p.image, m.name AS manufacturer, ss.name AS stock, wcd.unit AS weight_class FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN " . DB_PREFIX . "stock_status ss ON (p.stock_status_id = ss.stock_status_id) LEFT JOIN " . DB_PREFIX . "weight_class_description wcd ON (p.weight_class_id = wcd.weight_class_id) WHERE pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND wcd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p.date_available <= NOW() AND p.status = '1'");

		return $query->rows;
	}

	public function getProductsByCategoryId($category_id, $sort = 'p.sort_order', $order = 'ASC', $start = 0, $limit = 20) {
		$sql = "SELECT *, pd.name AS name, p.image, m.name AS manufacturer, ss.name AS stock, (SELECT AVG(r.rating) FROM " . DB_PREFIX . "review r WHERE p.product_id = r.product_id GROUP BY r.product_id) AS rating FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN " . DB_PREFIX . "stock_status ss ON (p.stock_status_id = ss.stock_status_id) LEFT JOIN " . DB_PREFIX . "product_to_category p2c ON (p.product_id = p2c.product_id) WHERE p.status = '1' AND p.date_available <= NOW() AND pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2c.category_id = '" . (int)$category_id . "'";

		$sort_data = array(
			'pd.name',
			'p.sort_order',
			'special',
			'rating',
			'p.price',
			'p.model'
		);

		if (in_array($sort, $sort_data)) {
			if ($sort == 'pd.name' || $sort == 'p.model') {
				$sql .= " ORDER BY LCASE(" . $sort . ")";
			} else {
				$sql .= " ORDER BY " . $sort;
			}
		} else {
			$sql .= " ORDER BY p.sort_order";
		}

		if ($order == 'DESC') {
			$sql .= " DESC";
		} else {
			$sql .= " ASC";
		}

		if ($start < 0) {
			$start = 0;
		}

		$sql .= " LIMIT " . (int)$start . "," . (int)$limit;

		$query = $this->db->query($sql);

		return $query->rows;
	}

	public function getTotalProductsByCategoryId($category_id = 0) {
		$query = $this->db->query("SELECT COUNT(*) AS total FROM " . DB_PREFIX . "product_to_category p2c LEFT JOIN " . DB_PREFIX . "product p ON (p2c.product_id = p.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND p2c.category_id = '" . (int)$category_id . "'");

		return $query->row['total'];
	}

	public function getProductsByManufacturerId($manufacturer_id, $sort = 'p.sort_order', $order = 'ASC', $start = 0, $limit = 20) {
		$sql = "SELECT *, pd.name AS name, p.image, m.name AS manufacturer, ss.name AS stock, (SELECT AVG(r.rating) FROM " . DB_PREFIX . "review r WHERE p.product_id = r.product_id GROUP BY r.product_id) AS rating FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN " . DB_PREFIX . "stock_status ss ON (p.stock_status_id = ss.stock_status_id) WHERE p.status = '1' AND p.date_available <= NOW() AND pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "' AND m.manufacturer_id = '" . (int)$manufacturer_id. "'";

		$sort_data = array(
			'pd.name',
			'p.sort_order',
			'special',
			'rating',
			'p.price',
			'p.model'
		);

		if (in_array($sort, $sort_data)) {
			if ($sort == 'pd.name' || $sort == 'p.model') {
				$sql .= " ORDER BY LCASE(" . $sort . ")";
			} else {
				$sql .= " ORDER BY " . $sort;
			}
		} else {
			$sql .= " ORDER BY p.sort_order";
		}

		if ($order == 'DESC') {
			$sql .= " DESC";
		} else {
			$sql .= " ASC";
		}

		if ($start < 0) {
			$start = 0;
		}

		$sql .= " LIMIT " . (int)$start . "," . (int)$limit;

		$query = $this->db->query($sql);

		return $query->rows;
	}

	public function getTotalProductsByManufacturerId($manufacturer_id = 0) {
		$query = $this->db->query("SELECT COUNT(*) AS total FROM " . DB_PREFIX . "product WHERE status = '1' AND date_available <= NOW() AND manufacturer_id = '" . (int)$manufacturer_id . "'");

		return $query->row['total'];
	}

	public function getProductsByTag($tag, $category_id = 0, $sort = 'p.sort_order', $order = 'ASC', $start = 0, $limit = 20) {
		if ($tag) {

			$sql = "SELECT *, pd.name AS name, p.image, m.name AS manufacturer, ss.name AS stock, (SELECT AVG(r.rating) FROM " . DB_PREFIX . "review r WHERE p.product_id = r.product_id GROUP BY r.product_id) AS rating FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_tags pt ON (p.product_id = pt.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN " . DB_PREFIX . "stock_status ss ON (p.stock_status_id = ss.stock_status_id) WHERE pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "'  AND pt.language_id = '" . (int)$this->config->get('config_language_id') . "' AND (pt.tag = '" . $this->db->escape($tag) . "'";

			$keywords = explode(" ", $tag);

			foreach ($keywords as $keyword) {
				$sql .= " OR pt.tag = '" . $this->db->escape($keyword) . "'";
			}

			$sql .= ")";

			if ($category_id) {
				$data = array();

				$this->load->model('catalog/category');

				$string = rtrim($this->getPath($category_id), ',');

				foreach (explode(',', $string) as $category_id) {
					$data[] = "category_id = '" . (int)$category_id . "'";
				}

				$sql .= " AND p.product_id IN (SELECT product_id FROM " . DB_PREFIX . "product_to_category WHERE " . implode(" OR ", $data) . ")";
			}

			$sql .= " AND p.status = '1' AND p.date_available <= NOW() GROUP BY p.product_id";

			$sort_data = array(
				'pd.name',
				'p.sort_order',
				'special',
				'rating',
				'p.price',
				'p.model'
			);

			if (in_array($sort, $sort_data)) {
				if ($sort == 'pd.name' || $sort == 'p.model') {
					$sql .= " ORDER BY LCASE(" . $sort . ")";
				} else {
					$sql .= " ORDER BY " . $sort;
				}
			} else {
				$sql .= " ORDER BY p.sort_order";
			}

			if ($order == 'DESC') {
				$sql .= " DESC";
			} else {
				$sql .= " ASC";
			}

			if ($start < 0) {
				$start = 0;
			}

			$sql .= " LIMIT " . (int)$start . "," . (int)$limit;

			$query = $this->db->query($sql);

			$products = array();

			foreach ($query->rows as $key => $value) {
				$products[$value['product_id']] = $this->getProduct($value['product_id']);
			}

			return $products;
		}
	}

	public function getProductsByKeyword($keyword, $category_id = 0, $description = FALSE, $model = FALSE, $sort = 'p.sort_order', $order = 'ASC', $start = 0, $limit = 20) {
		if ($keyword) {

			$sql = "SELECT *, pd.name AS name, p.image, m.name AS manufacturer, ss.name AS stock, (SELECT AVG(r.rating) FROM " . DB_PREFIX . "review r WHERE p.product_id = r.product_id GROUP BY r.product_id) AS rating FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN " . DB_PREFIX . "stock_status ss ON (p.stock_status_id = ss.stock_status_id) WHERE pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "'";

			if (!$description) {
				$sql .= " AND (pd.name LIKE '%" . $this->db->escape($keyword) . "%'";
			} else {
				$sql .= " AND (pd.name LIKE '%" . $this->db->escape($keyword) . "%' OR pd.description LIKE '%" . $this->db->escape($keyword) . "%'";
			}

			$model = str_replace(array('_', '-', '—', '.', ',', ' ', '+', '/'), '', $keyword);
            if (strlen($model) > 2) {
                   $sql .= " OR p.model LIKE '" . $model . "%')";
            } else {
                   $sql .= " OR p.model LIKE '%" . $this->db->escape($keyword) . "%')";
            }

			if ($category_id) {
				$data = array();

				$this->load->model('catalog/category');

				$string = rtrim($this->getPath($category_id), ',');

				foreach (explode(',', $string) as $category_id) {
					$data[] = "category_id = '" . (int)$category_id . "'";
				}

				$sql .= " AND p.product_id IN (SELECT product_id FROM " . DB_PREFIX . "product_to_category WHERE " . implode(" OR ", $data) . ")";
			}

			$sql .= " AND p.status = '1' AND p.date_available <= NOW() GROUP BY p.product_id";

			$sort_data = array(
				'pd.name',
				'p.sort_order',
				'special',
				'rating',
				'p.price',
				'p.model'
			);

			if (in_array($sort, $sort_data)) {
				if ($sort == 'pd.name' || $sort == 'p.model') {
					$sql .= " ORDER BY LCASE(" . $sort . ")";
				} else {
					$sql .= " ORDER BY " . $sort;
				}
			} else {
				$sql .= " ORDER BY p.sort_order";
			}

			if ($order == 'DESC') {
				$sql .= " DESC";
			} else {
				$sql .= " ASC";
			}

			if ($start < 0) {
				$start = 0;
			}

			$sql .= " LIMIT " . (int)$start . "," . (int)$limit;

			$query = $this->db->query($sql);

			return $query->rows;
		}
		return 0;
	}

	public function getTotalProductsByKeyword($keyword, $category_id = 0, $description = FALSE, $model = FALSE) {
		if ($keyword) {
			$sql = "SELECT COUNT(*) AS total FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "'";

			if (!$description) {
				$sql .= " AND (pd.name LIKE '%" . $this->db->escape($keyword) . "%'";
			} else {
				$sql .= " AND (pd.name LIKE '%" . $this->db->escape($keyword) . "%' OR pd.description LIKE '%" . $this->db->escape($keyword) . "%'";
			}

			$model = str_replace(array('_', '-', '—', '.', ',', ' ', '+', '/'), '', $keyword);
            if (strlen($model) > 2) {
                   $sql .= " OR p.model LIKE '" . $model . "%')";
            } else {
                   $sql .= " OR p.model LIKE '%" . $this->db->escape($keyword) . "%')";
            }

			if ($category_id) {
				$data = array();

				$this->load->model('catalog/category');

				$string = rtrim($this->getPath($category_id), ',');

				foreach (explode(',', $string) as $category_id) {
					$data[] = "category_id = '" . (int)$category_id . "'";
				}

				$sql .= " AND p.product_id IN (SELECT product_id FROM " . DB_PREFIX . "product_to_category WHERE " . implode(" OR ", $data) . ")";
			}

			$sql .= " AND p.status = '1' AND p.date_available <= NOW()";

			$query = $this->db->query($sql);

			if ($query->num_rows) {
				return $query->row['total'];
			} else {
				return 0;
			}
		}
		return 0;
	}

	public function getTotalProductsByTag($tag, $category_id = 0) {
		if ($tag) {

			$sql = "SELECT COUNT(*) AS total FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_tags pt ON (p.product_id = pt.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN " . DB_PREFIX . "stock_status ss ON (p.stock_status_id = ss.stock_status_id) WHERE pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "'  AND pt.language_id = '" . (int)$this->config->get('config_language_id') . "' AND (pt.tag = '" . $this->db->escape($tag) . "'";

			$keywords = explode(" ", $tag);

			foreach ($keywords as $keyword) {
				$sql .= " OR pt.tag = '" . $this->db->escape($keyword) . "'";
			}

			$sql .= ")";

			if ($category_id) {
				$data = array();

				$this->load->model('catalog/category');

				$string = rtrim($this->getPath($category_id), ',');

				foreach (explode(',', $string) as $category_id) {
					$data[] = "category_id = '" . (int)$category_id . "'";
				}

				$sql .= " AND p.product_id IN (SELECT product_id FROM " . DB_PREFIX . "product_to_category WHERE " . implode(" OR ", $data) . ")";
			}

			$sql .= " AND p.status = '1' AND p.date_available <= NOW()";

			$query = $this->db->query($sql);

			if ($query->num_rows) {
				return $query->row['total'];
			} else {
				return 0;
			}
		}
		return 0;
	}

	public function getPath($category_id) {
		$string = $category_id . ',';

		$results = $this->model_catalog_category->getCategories($category_id);

		foreach ($results as $result) {
			$string .= $this->getPath($result['category_id']);
		}

		return $string;
	}

	public function getLatestProducts($limit) {
		$product_data = $this->cache->get('product.latest.' . $this->config->get('config_language_id') . '.' . (int)$this->config->get('config_store_id') . '.' . $limit);

		if (!$product_data) {
			$query = $this->db->query("SELECT *, pd.name AS name, p.image, m.name AS manufacturer, ss.name AS stock, (SELECT AVG(r.rating) FROM " . DB_PREFIX . "review r WHERE p.product_id = r.product_id GROUP BY r.product_id) AS rating FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN " . DB_PREFIX . "stock_status ss ON (p.stock_status_id = ss.stock_status_id) WHERE p.status = '1' AND p.date_available <= NOW() AND pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "' ORDER BY p.date_added DESC LIMIT " . (int)$limit);

			$product_data = $query->rows;

			$this->cache->set('product.latest.' . $this->config->get('config_language_id') . '.' . (int)$this->config->get('config_store_id') . '.' . $limit, $product_data);
		}

		return $product_data;
	}

	public function getPopularProducts($limit) {
		$query = $this->db->query("SELECT *, pd.name AS name, p.image, m.name AS manufacturer, ss.name AS stock, (SELECT AVG(r.rating) FROM " . DB_PREFIX . "review r WHERE p.product_id = r.product_id GROUP BY r.product_id) AS rating FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN " . DB_PREFIX . "stock_status ss ON (p.stock_status_id = ss.stock_status_id) WHERE p.status = '1' AND p.date_available <= NOW() AND pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "' ORDER BY p.viewed, p.date_added DESC LIMIT " . (int)$limit);

		return $query->rows;
	}

	public function getFeaturedProducts($limit) {
		$product_data = $this->cache->get('product.featured.' . $this->config->get('config_language_id') . '.' . (int)$this->config->get('config_store_id') . '.' . $limit);

		if (!$product_data) {
			$query = $this->db->query("SELECT *, pd.name AS name, p.image, m.name AS manufacturer, ss.name AS stock, (SELECT AVG(r.rating) FROM " . DB_PREFIX . "review r WHERE p.product_id = r.product_id GROUP BY r.product_id) AS rating FROM " . DB_PREFIX . "product_featured f LEFT JOIN " . DB_PREFIX . "product p ON (f.product_id=p.product_id) LEFT JOIN " . DB_PREFIX . "product_description pd ON (f.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN " . DB_PREFIX . "stock_status ss ON (p.stock_status_id = ss.stock_status_id) WHERE p.status = '1' AND p.date_available <= NOW() AND pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "' LIMIT " . (int)$limit);

			$product_data = $query->rows;

			$this->cache->set('product.featured.' . $this->config->get('config_language_id') . '.' . (int)$this->config->get('config_store_id') . '.' . $limit, $product_data);
		}

		return $product_data;
	}

	public function getBestSellerProducts($limit) {
		$product_data = $this->cache->get('product.bestseller.' . $this->config->get('config_language_id') . '.' . (int)$this->config->get('config_store_id') . '.' . $limit);

		if (!$product_data) {
			$product_data = array();

			$query = $this->db->query("SELECT op.product_id, SUM(op.quantity) AS total, p.status FROM " . DB_PREFIX . "order_product op LEFT JOIN `" . DB_PREFIX . "order` o ON (op.order_id = o.order_id) LEFT JOIN `" . DB_PREFIX . "product` p ON (op.product_id = p.product_id) WHERE o.order_status_id > '0' AND p.status = '1' GROUP BY op.product_id, p.status ORDER BY total DESC LIMIT " . (int)$limit);

			foreach ($query->rows as $result) {
				$product_query = $this->db->query("SELECT * FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE p.product_id = '" . (int)$result['product_id'] . "' AND p.status = '1' AND p.date_available <= NOW() AND pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "'");

				if ($product_query->num_rows) {
					$product_data[] = $product_query->row;
				}
			}

			$this->cache->set('product.bestseller.' . $this->config->get('config_language_id') . '.' . (int)$this->config->get('config_store_id') . '.' . $limit, $product_data);
		}

		return $product_data;
	}

	public function updateViewed($product_id) {
		$this->db->query("UPDATE " . DB_PREFIX . "product SET viewed = viewed + 1 WHERE product_id = '" . (int)$product_id . "'");
	}

	public function getProductOptions($product_id) {
		$product_option_data = array();

		$product_option_query = $this->db->query("SELECT * FROM " . DB_PREFIX . "product_option WHERE product_id = '" . (int)$product_id . "' ORDER BY sort_order");

		foreach ($product_option_query->rows as $product_option) {
			$product_option_value_data = array();

			$product_option_value_query = $this->db->query("SELECT * FROM " . DB_PREFIX . "product_option_value WHERE product_option_id = '" . (int)$product_option['product_option_id'] . "' ORDER BY sort_order");

			foreach ($product_option_value_query->rows as $product_option_value) {
				$product_option_value_description_query = $this->db->query("SELECT * FROM " . DB_PREFIX . "product_option_value_description WHERE product_option_value_id = '" . (int)$product_option_value['product_option_value_id'] . "' AND language_id = '" . (int)$this->config->get('config_language_id') . "'");

				$product_option_value_data[] = array(
					'product_option_value_id' => $product_option_value['product_option_value_id'],
					'name'                    => $product_option_value_description_query->row['name'],
         			'price'                   => $product_option_value['price'],
         			'prefix'                  => $product_option_value['prefix']
				);
			}

			$product_option_description_query = $this->db->query("SELECT * FROM " . DB_PREFIX . "product_option_description WHERE product_option_id = '" . (int)$product_option['product_option_id'] . "' AND language_id = '" . (int)$this->config->get('config_language_id') . "'");

        	$product_option_data[] = array(
        		'product_option_id' => $product_option['product_option_id'],
				'name'              => $product_option_description_query->row['name'],
				'option_value'      => $product_option_value_data,
				'sort_order'        => $product_option['sort_order']
        	);
      	}

		return $product_option_data;
	}

	public function getProductImages($product_id) {
		$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "product_image WHERE product_id = '" . (int)$product_id . "'");

		return $query->rows;
	}

	public function getProductTags($product_id) {
		$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "product_tags WHERE product_id = '" . (int)$product_id . "' AND language_id = '" . (int)$this->config->get('config_language_id') . "'");

		return $query->rows;
	}

	public function getProductDiscount($product_id) {
		if ($this->customer->isLogged()) {
			$customer_group_id = $this->customer->getCustomerGroupId();
		} else {
			$customer_group_id = $this->config->get('config_customer_group_id');
		}

		$query = $this->db->query("SELECT price FROM " . DB_PREFIX . "product_discount WHERE product_id = '" . (int)$product_id . "' AND customer_group_id = '" . (int)$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 priority ASC, price ASC LIMIT 1");

		if ($query->num_rows) {
			return $query->row['price'];
		} else {
			return FALSE;
		}
	}

	public function getProductDiscounts($product_id) {
		if ($this->customer->isLogged()) {
			$customer_group_id = $this->customer->getCustomerGroupId();
		} else {
			$customer_group_id = $this->config->get('config_customer_group_id');
		}

		$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "product_discount WHERE product_id = '" . (int)$product_id . "' AND customer_group_id = '" . (int)$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 getProductSpecial($product_id) {
		if ($this->customer->isLogged()) {
			$customer_group_id = $this->customer->getCustomerGroupId();
		} else {
			$customer_group_id = $this->config->get('config_customer_group_id');
		}

		$query = $this->db->query("SELECT price FROM " . DB_PREFIX . "product_special WHERE product_id = '" . (int)$product_id . "' AND customer_group_id = '" . (int)$customer_group_id . "' AND ((date_start = '0000-00-00' OR date_start < NOW()) AND (date_end = '0000-00-00' OR date_end > NOW())) ORDER BY priority ASC, price ASC LIMIT 1");

		if ($query->num_rows) {
			return $query->row['price'];
		} else {
			return FALSE;
		}
	}

	public function getProductSpecials($sort = 'p.sort_order', $order = 'ASC', $start = 0, $limit = 20) {
		if ($this->customer->isLogged()) {
			$customer_group_id = $this->customer->getCustomerGroupId();
		} else {
			$customer_group_id = $this->config->get('config_customer_group_id');
		}

		$sql = "SELECT *, pd.name AS name, p.price, (SELECT ps2.price FROM " . DB_PREFIX . "product_special ps2 WHERE p.product_id = ps2.product_id AND ps2.customer_group_id = '" . (int)$customer_group_id . "' AND ((ps2.date_start = '0000-00-00' OR ps2.date_start < NOW()) AND (ps2.date_end = '0000-00-00' OR ps2.date_end > NOW())) ORDER BY ps2.priority ASC, ps2.price ASC LIMIT 1) AS special, p.image, m.name AS manufacturer, ss.name AS stock, (SELECT AVG(r.rating) FROM " . DB_PREFIX . "review r WHERE p.product_id = r.product_id GROUP BY r.product_id) AS rating 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 . "product_special ps ON (p.product_id = ps.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN " . DB_PREFIX . "stock_status ss ON (p.stock_status_id = ss.stock_status_id) WHERE p.status = '1' AND p.date_available <= NOW() AND pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "' AND ps.customer_group_id = '" . (int)$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())) AND ps.product_id NOT IN (SELECT pd2.product_id FROM " . DB_PREFIX . "product_discount pd2 WHERE p.product_id = pd2.product_id AND pd2.customer_group_id = '" . (int)$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()))) GROUP BY p.product_id";

		$sort_data = array(
			'pd.name',
			'p.sort_order',
			'special',
			'rating',
			'p.price',
			'p.model'
		);

		if (in_array($sort, $sort_data)) {
			if ($sort == 'pd.name' || $sort == 'p.model') {
				$sql .= " ORDER BY LCASE(" . $sort . ")";
			} else {
				$sql .= " ORDER BY " . $sort;
			}
		} else {
			$sql .= " ORDER BY p.sort_order";
		}

		if ($order == 'DESC') {
			$sql .= " DESC";
		} else {
			$sql .= " ASC";
		}

		if ($start < 0) {
			$start = 0;
		}

		$sql .= " LIMIT " . (int)$start . "," . (int)$limit;

		$query = $this->db->query($sql);

		return $query->rows;
	}

	public function getTotalProductSpecials() {
		if ($this->customer->isLogged()) {
			$customer_group_id = $this->customer->getCustomerGroupId();
		} else {
			$customer_group_id = $this->config->get('config_customer_group_id');
		}

		$query = $this->db->query("SELECT COUNT(DISTINCT ps.product_id) AS total FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "product_special ps ON (p.product_id = ps.product_id) WHERE p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int)$this->config->get('config_store_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())) AND ps.product_id NOT IN (SELECT pd2.product_id FROM " . DB_PREFIX . "product_discount pd2 WHERE p.product_id = pd2.product_id AND pd2.customer_group_id = '" . (int)$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())))");

		if (isset($query->row['total'])) {
			return $query->row['total'];
		} else {
			return 0;
		}
	}

	public function getProductRelated($product_id) {
		$product_data = array();

		$product_related_query = $this->db->query("SELECT * FROM " . DB_PREFIX . "product_related WHERE product_id = '" . (int)$product_id . "'");

		foreach ($product_related_query->rows as $result) {
			$product_query = $this->db->query("SELECT DISTINCT *, pd.name AS name, p.image, m.name AS manufacturer, ss.name AS stock, (SELECT AVG(r.rating) FROM " . DB_PREFIX . "review r WHERE p.product_id = r.product_id GROUP BY r.product_id) AS rating FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) LEFT JOIN " . DB_PREFIX . "stock_status ss ON (p.stock_status_id = ss.stock_status_id) WHERE p.product_id = '" . (int)$result['related_id'] . "' AND pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p.date_available <= NOW() AND p.status = '1'");

			if ($product_query->num_rows) {
				$product_data[$result['related_id']] = $product_query->row;
			}
		}

		return $product_data;
	}

	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;
	}
}
?>