<?php
namespace Opencart\Admin\Model\Sale;
/**
 * Class Order
 *
 * @package Opencart\Admin\Model\Sale
 */
class Order extends \Opencart\System\Engine\Model {
	/**
	 * @param int $order_id
	 *
	 * @return array
	 */
	public function getOrder(int $order_id): array {
		$order_query = $this->db->query("SELECT *, (SELECT `os`.`name` FROM `" . DB_PREFIX . "order_status` os WHERE `os`.`order_status_id` = `o`.`order_status_id` AND `os`.`language_id` = '" . (int)$this->config->get('config_language_id') . "') AS `order_status` FROM `" . DB_PREFIX . "order` `o` WHERE `o`.`order_id` = '" . (int)$order_id . "'");

		if ($order_query->num_rows) {
			$country_query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "country` WHERE `country_id` = '" . (int)$order_query->row['payment_country_id'] . "'");

			if ($country_query->num_rows) {
				$payment_iso_code_2 = $country_query->row['iso_code_2'];
				$payment_iso_code_3 = $country_query->row['iso_code_3'];
			} else {
				$payment_iso_code_2 = '';
				$payment_iso_code_3 = '';
			}

			$zone_query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "zone` WHERE `zone_id` = '" . (int)$order_query->row['payment_zone_id'] . "'");

			if ($zone_query->num_rows) {
				$payment_zone_code = $zone_query->row['code'];
			} else {
				$payment_zone_code = '';
			}

			$country_query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "country` WHERE `country_id` = '" . (int)$order_query->row['shipping_country_id'] . "'");

			if ($country_query->num_rows) {
				$shipping_iso_code_2 = $country_query->row['iso_code_2'];
				$shipping_iso_code_3 = $country_query->row['iso_code_3'];
			} else {
				$shipping_iso_code_2 = '';
				$shipping_iso_code_3 = '';
			}

			$zone_query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "zone` WHERE `zone_id` = '" . (int)$order_query->row['shipping_zone_id'] . "'");

			if ($zone_query->num_rows) {
				$shipping_zone_code = $zone_query->row['code'];
			} else {
				$shipping_zone_code = '';
			}

			$reward = 0;

			$order_product_query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "order_product` WHERE `order_id` = '" . (int)$order_id . "'");

			foreach ($order_product_query->rows as $product) {
				$reward += $product['reward'];
			}

			$this->load->model('customer/customer');

			$affiliate_info = $this->model_customer_customer->getCustomer($order_query->row['affiliate_id']);

			if ($affiliate_info) {
				$affiliate = $affiliate_info['firstname'] . ' ' . $affiliate_info['lastname'];
			} else {
				$affiliate = '';
			}

			$this->load->model('localisation/language');

			$language_info = $this->model_localisation_language->getLanguage($order_query->row['language_id']);

			if ($language_info) {
				$language_code = $language_info['code'];
			} else {
				$language_code = $this->config->get('config_language');
			}

			return [
				'order_id'                => $order_query->row['order_id'],
				'invoice_no'              => $order_query->row['invoice_no'],
				'invoice_prefix'          => $order_query->row['invoice_prefix'],
				'store_id'                => $order_query->row['store_id'],
				'store_name'              => $order_query->row['store_name'],
				'store_url'               => $order_query->row['store_url'],
				'customer_id'             => $order_query->row['customer_id'],
				'customer_group_id'       => $order_query->row['customer_group_id'],
				'firstname'               => $order_query->row['firstname'],
				'lastname'                => $order_query->row['lastname'],
				'email'                   => $order_query->row['email'],
				'telephone'               => $order_query->row['telephone'],
				'custom_field'            => json_decode($order_query->row['custom_field'], true),
				'payment_address_id'      => $order_query->row['payment_address_id'],
				'payment_firstname'       => $order_query->row['payment_firstname'],
				'payment_lastname'        => $order_query->row['payment_lastname'],
				'payment_company'         => $order_query->row['payment_company'],
				'payment_address_1'       => $order_query->row['payment_address_1'],
				'payment_address_2'       => $order_query->row['payment_address_2'],
				'payment_postcode'        => $order_query->row['payment_postcode'],
				'payment_city'            => $order_query->row['payment_city'],
				'payment_zone_id'         => $order_query->row['payment_zone_id'],
				'payment_zone'            => $order_query->row['payment_zone'],
				'payment_zone_code'       => $payment_zone_code,
				'payment_country_id'      => $order_query->row['payment_country_id'],
				'payment_country'         => $order_query->row['payment_country'],
				'payment_iso_code_2'      => $payment_iso_code_2,
				'payment_iso_code_3'      => $payment_iso_code_3,
				'payment_address_format'  => $order_query->row['payment_address_format'],
				'payment_custom_field'    => json_decode($order_query->row['payment_custom_field'], true),
				'payment_method'          => json_decode($order_query->row['payment_method'], true),
				'shipping_address_id'     => $order_query->row['shipping_address_id'],
				'shipping_firstname'      => $order_query->row['shipping_firstname'],
				'shipping_lastname'       => $order_query->row['shipping_lastname'],
				'shipping_company'        => $order_query->row['shipping_company'],
				'shipping_address_1'      => $order_query->row['shipping_address_1'],
				'shipping_address_2'      => $order_query->row['shipping_address_2'],
				'shipping_postcode'       => $order_query->row['shipping_postcode'],
				'shipping_city'           => $order_query->row['shipping_city'],
				'shipping_zone_id'        => $order_query->row['shipping_zone_id'],
				'shipping_zone'           => $order_query->row['shipping_zone'],
				'shipping_zone_code'      => $shipping_zone_code,
				'shipping_country_id'     => $order_query->row['shipping_country_id'],
				'shipping_country'        => $order_query->row['shipping_country'],
				'shipping_iso_code_2'     => $shipping_iso_code_2,
				'shipping_iso_code_3'     => $shipping_iso_code_3,
				'shipping_address_format' => $order_query->row['shipping_address_format'],
				'shipping_custom_field'   => json_decode($order_query->row['shipping_custom_field'], true),
				'shipping_method'         => json_decode($order_query->row['shipping_method'], true),
				'comment'                 => $order_query->row['comment'],
				'total'                   => $order_query->row['total'],
				'reward'                  => $reward,
				'order_status_id'         => $order_query->row['order_status_id'],
				'order_status'            => $order_query->row['order_status'],
				'affiliate_id'            => $order_query->row['affiliate_id'],
				'affiliate'               => $affiliate,
				'commission'              => $order_query->row['commission'],
				'language_id'             => $order_query->row['language_id'],
				'language_code'           => $language_code,
				'currency_id'             => $order_query->row['currency_id'],
				'currency_code'           => $order_query->row['currency_code'],
				'currency_value'          => $order_query->row['currency_value'],
				'ip'                      => $order_query->row['ip'],
				'forwarded_ip'            => $order_query->row['forwarded_ip'],
				'user_agent'              => $order_query->row['user_agent'],
				'accept_language'         => $order_query->row['accept_language'],
				'date_added'              => $order_query->row['date_added'],
				'date_modified'           => $order_query->row['date_modified']
			];
		} else {
			return [];
		}
	}

	/**
	 * @param array $data
	 *
	 * @return array
	 */
	public function getOrders(array $data = []): array {
		$sql = "SELECT o.`order_id`, CONCAT(o.`firstname`, ' ', o.`lastname`) AS customer, (SELECT os.`name` FROM `" . DB_PREFIX . "order_status` os WHERE os.`order_status_id` = o.`order_status_id` AND os.`language_id` = '" . (int)$this->config->get('config_language_id') . "') AS order_status, o.`store_name`, o.`shipping_method`, o.`total`, o.`currency_code`, o.`currency_value`, o.`date_added`, o.`date_modified` FROM `" . DB_PREFIX . "order` o";

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

			$order_statuses = explode(',', $data['filter_order_status']);

			foreach ($order_statuses as $order_status_id) {
				$implode[] = "o.`order_status_id` = '" . (int)$order_status_id . "'";
			}

			if ($implode) {
				$sql .= " WHERE (" . implode(" OR ", $implode) . ")";
			}
		} elseif (isset($data['filter_order_status_id']) && $data['filter_order_status_id'] !== '') {
			$sql .= " WHERE o.`order_status_id` = '" . (int)$data['filter_order_status_id'] . "'";
		} else {
			$sql .= " WHERE o.`order_status_id` > '0'";
		}

		if (!empty($data['filter_order_id'])) {
			$sql .= " AND o.`order_id` = '" . (int)$data['filter_order_id'] . "'";
		}

		if (isset($data['filter_store_id']) && $data['filter_store_id'] !== '') {
			$sql .= " AND o.`store_id` = '" . (int)$data['filter_store_id'] . "'";
		}

		if (!empty($data['filter_customer_id'])) {
			$sql .= " AND o.`customer_id` = '" . (int)$data['filter_customer_id'] . "'";
		}

		if (!empty($data['filter_customer'])) {
			$sql .= " AND CONCAT(o.`firstname`, ' ', o.`lastname`) LIKE '" . $this->db->escape('%' . (string)$data['filter_customer'] . '%') . "'";
		}

		if (!empty($data['filter_email'])) {
			$sql .= " AND o.`email` LIKE '" . $this->db->escape('%' . (string)$data['filter_email'] . '%') . "'";
		}

		if (!empty($data['filter_date_from'])) {
			$sql .= " AND DATE(o.`date_added`) >= DATE('" . $this->db->escape((string)$data['filter_date_from']) . "')";
		}

		if (!empty($data['filter_date_to'])) {
			$sql .= " AND DATE(o.`date_added`) <= DATE('" . $this->db->escape((string)$data['filter_date_to']) . "')";
		}

		if (!empty($data['filter_total'])) {
			$sql .= " AND o.`total` = '" . (float)$data['filter_total'] . "'";
		}

		$sort_data = [
			'o.order_id',
			'o.store_name',
			'customer',
			'order_status',
			'o.date_added',
			'o.date_modified',
			'o.total'
		];

		if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
			$sql .= " ORDER BY " . $data['sort'];
		} else {
			$sql .= " ORDER BY o.`order_id`";
		}

		if (isset($data['order']) && ($data['order'] == 'DESC')) {
			$sql .= " DESC";
		} else {
			$sql .= " 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'];
		}

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

		return $query->rows;
	}

	/**
	 * @param int $subscription_id
	 *
	 * @return array
	 */
	public function getOrdersBySubscriptionId(int $subscription_id): array {
		$query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "order` WHERE `subscription_id` = '" . (int)$subscription_id . "'");

		return $query->rows;
	}

	/**
	 * @param int $subscription_id
	 *
	 * @return int
	 */
	public function getTotalOrdersBySubscriptionId(int $subscription_id): int {
		$query = $this->db->query("SELECT COUNT(*) AS `total` FROM `" . DB_PREFIX . "order` WHERE `subscription_id` = '" . (int)$subscription_id . "'");

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

	/**
	 * @param int $order_id
	 *
	 * @return array
	 */
	public function getProducts(int $order_id): array {
		$query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "order_product` WHERE `order_id` = '" . (int)$order_id . "' ORDER BY order_product_id ASC");

		return $query->rows;
	}

	/**
	 * @param int $product_id
	 *
	 * @return int
	 */
	public function getTotalProductsByProductId(int $product_id): int {
		$sql = "SELECT SUM(op.quantity) AS `total` FROM `" . DB_PREFIX . "order_product` `op` LEFT JOIN `" . DB_PREFIX . "order` `o` ON (`op`.`order_id` = `o`.`order_id`) WHERE `op`.`product_id` = '" . (int)$product_id . "'";

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

			$order_statuses = explode(',', $data['filter_order_status']);

			foreach ($order_statuses as $order_status_id) {
				$implode[] = "`order_status_id` = '" . (int)$order_status_id . "'";
			}

			if ($implode) {
				$sql .= " AND (" . implode(" OR ", $implode) . ")";
			}
		} elseif (isset($data['filter_order_status_id']) && $data['filter_order_status_id'] !== '') {
			$sql .= " AND `order_status_id` = '" . (int)$data['filter_order_status_id'] . "'";
		} else {
			$sql .= " AND `order_status_id` > '0'";
		}

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

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

	/**
	 * @param int $order_id
	 * @param int $order_product_id
	 *
	 * @return array
	 */
	public function getOptions(int $order_id, int $order_product_id): array {
		$query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "order_option` WHERE `order_id` = '" . (int)$order_id . "' AND `order_product_id` = '" . (int)$order_product_id . "'");

		return $query->rows;
	}

	/**
	 * @param int $order_id
	 * @param int $order_product_id
	 *
	 * @return array
	 */
	public function getSubscription(int $order_id, int $order_product_id): array {
		$query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "order_subscription` WHERE `order_id` = '" . (int)$order_id . "' AND `order_product_id` = '" . (int)$order_product_id . "'");

		return $query->row;
	}

	/**
	 * @param int $order_id
	 *
	 * @return array
	 */
	public function getVouchers(int $order_id): array {
		$query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "order_voucher` WHERE `order_id` = '" . (int)$order_id . "'");

		return $query->rows;
	}

	/**
	 * @param int $voucher_id
	 *
	 * @return array
	 */
	public function getVoucherByVoucherId(int $voucher_id): array {
		$query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "order_voucher` WHERE `voucher_id` = '" . (int)$voucher_id . "'");

		return $query->row;
	}

	/**
	 * @param int $order_id
	 *
	 * @return array
	 */
	public function getTotals(int $order_id): array {
		$query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "order_total` WHERE `order_id` = '" . (int)$order_id . "' ORDER BY `sort_order`");

		return $query->rows;
	}

	/**
	 * @param array $data
	 *
	 * @return int
	 */
	public function getTotalOrders(array $data = []): int {
		$sql = "SELECT COUNT(*) AS `total` FROM `" . DB_PREFIX . "order`";

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

			$order_statuses = explode(',', $data['filter_order_status']);

			foreach ($order_statuses as $order_status_id) {
				$implode[] = "`order_status_id` = '" . (int)$order_status_id . "'";
			}

			if ($implode) {
				$sql .= " WHERE (" . implode(" OR ", $implode) . ")";
			}
		} elseif (isset($data['filter_order_status_id']) && $data['filter_order_status_id'] !== '') {
			$sql .= " WHERE `order_status_id` = '" . (int)$data['filter_order_status_id'] . "'";
		} else {
			$sql .= " WHERE `order_status_id` > '0'";
		}

		if (!empty($data['filter_order_id'])) {
			$sql .= " AND `order_id` = '" . (int)$data['filter_order_id'] . "'";
		}

		if (isset($data['filter_store_id']) && $data['filter_store_id'] !== '') {
			$sql .= " AND `store_id` = '" . (int)$data['filter_store_id'] . "'";
		}

		if (!empty($data['filter_customer_id'])) {
			$sql .= " AND `customer_id` = '" . (int)$data['filter_customer_id'] . "'";
		}

		if (!empty($data['filter_customer'])) {
			$sql .= " AND CONCAT(`firstname`, ' ', `lastname`) LIKE '" . $this->db->escape('%' . (string)$data['filter_customer'] . '%') . "'";
		}

		if (!empty($data['filter_email'])) {
			$sql .= " AND `email` LIKE '" . $this->db->escape('%' . (string)$data['filter_email'] . '%') . "'";
		}

		if (!empty($data['filter_date_from'])) {
			$sql .= " AND DATE(`date_added`) >= DATE('" . $this->db->escape((string)$data['filter_date_from']) . "')";
		}

		if (!empty($data['filter_date_to'])) {
			$sql .= " AND DATE(`date_added`) <= DATE('" . $this->db->escape((string)$data['filter_date_to']) . "')";
		}

		if (!empty($data['filter_total'])) {
			$sql .= " AND `total` = '" . (float)$data['filter_total'] . "'";
		}

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

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

	/**
	 * @param int $store_id
	 *
	 * @return int
	 */
	public function getTotalOrdersByStoreId(int $store_id): int {
		$query = $this->db->query("SELECT COUNT(*) AS `total` FROM `" . DB_PREFIX . "order` WHERE `store_id` = '" . (int)$store_id . "'");

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

	/**
	 * @param int $order_status_id
	 *
	 * @return int
	 */
	public function getTotalOrdersByOrderStatusId(int $order_status_id): int {
		$query = $this->db->query("SELECT COUNT(*) AS `total` FROM `" . DB_PREFIX . "order` WHERE `order_status_id` = '" . (int)$order_status_id . "' AND `order_status_id` > '0'");

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

	/**
	 * @return int
	 */
	public function getTotalOrdersByProcessingStatus(): int {
		$implode = [];

		$order_statuses = $this->config->get('config_processing_status');

		foreach ($order_statuses as $order_status_id) {
			$implode[] = "`order_status_id` = '" . (int)$order_status_id . "'";
		}

		if ($implode) {
			$query = $this->db->query("SELECT COUNT(*) AS `total` FROM `" . DB_PREFIX . "order` WHERE " . implode(" OR ", $implode));

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

	/**
	 * @return int
	 */
	public function getTotalOrdersByCompleteStatus(): int {
		$implode = [];

		$order_statuses = $this->config->get('config_complete_status');

		foreach ($order_statuses as $order_status_id) {
			$implode[] = "`order_status_id` = '" . (int)$order_status_id . "'";
		}

		if ($implode) {
			$query = $this->db->query("SELECT COUNT(*) AS `total` FROM `" . DB_PREFIX . "order` WHERE " . implode(" OR ", $implode) . "");

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

	/**
	 * @param int $language_id
	 *
	 * @return int
	 */
	public function getTotalOrdersByLanguageId(int $language_id): int {
		$query = $this->db->query("SELECT COUNT(*) AS `total` FROM `" . DB_PREFIX . "order` WHERE `language_id` = '" . (int)$language_id . "' AND `order_status_id` > '0'");

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

	/**
	 * @param int $currency_id
	 *
	 * @return int
	 */
	public function getTotalOrdersByCurrencyId(int $currency_id): int {
		$query = $this->db->query("SELECT COUNT(*) AS `total` FROM `" . DB_PREFIX . "order` WHERE `currency_id` = '" . (int)$currency_id . "' AND `order_status_id` > '0'");

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

	/**
	 * @param array $data
	 *
	 * @return float
	 */
	public function getTotalSales(array $data = []): float {
		$sql = "SELECT SUM(`total`) AS `total` FROM `" . DB_PREFIX . "order`";

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

			$order_statuses = explode(',', $data['filter_order_status']);

			foreach ($order_statuses as $order_status_id) {
				$implode[] = "`order_status_id` = '" . (int)$order_status_id . "'";
			}

			if ($implode) {
				$sql .= " WHERE (" . implode(" OR ", $implode) . ")";
			}
		} elseif (isset($data['filter_order_status_id']) && $data['filter_order_status_id'] !== '') {
			$sql .= " WHERE `order_status_id` = '" . (int)$data['filter_order_status_id'] . "'";
		} else {
			$sql .= " WHERE `order_status_id` > '0'";
		}

		if (!empty($data['filter_order_id'])) {
			$sql .= " AND `order_id` = '" . (int)$data['filter_order_id'] . "'";
		}

		if (isset($data['filter_store_id']) && $data['filter_store_id'] !== '') {
			$sql .= " AND `store_id` = '" . (int)$data['filter_store_id'] . "'";
		}

		if (!empty($data['filter_customer_id'])) {
			$sql .= " AND `customer_id` = '" . (int)$data['filter_customer_id'] . "'";
		}

		if (!empty($data['filter_customer'])) {
			$sql .= " AND CONCAT(`firstname`, ' ', `lastname`) LIKE '" . $this->db->escape('%' . (string)$data['filter_customer'] . '%') . "'";
		}

		if (!empty($data['filter_email'])) {
			$sql .= " AND `email` LIKE '" . $this->db->escape('%' . (string)$data['filter_email'] . '%') . "'";
		}

		if (!empty($data['filter_date_added'])) {
			$sql .= " AND DATE(`date_added`) = DATE('" . $this->db->escape((string)$data['filter_date_added']) . "')";
		}

		if (!empty($data['filter_date_modified'])) {
			$sql .= " AND DATE(`date_modified`) = DATE('" . $this->db->escape((string)$data['filter_date_modified']) . "')";
		}

		if (!empty($data['filter_total'])) {
			$sql .= " AND `total` = '" . (float)$data['filter_total'] . "'";
		}

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

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

	/**
	 * @param int $order_id
	 *
	 * @return string
	 */
	public function createInvoiceNo(int $order_id): string {
		$order_info = $this->getOrder($order_id);

		if ($order_info && !$order_info['invoice_no']) {
			$query = $this->db->query("SELECT MAX(`invoice_no`) AS invoice_no FROM `" . DB_PREFIX . "order` WHERE `invoice_prefix` = '" . $this->db->escape($order_info['invoice_prefix']) . "'");

			if ($query->row['invoice_no']) {
				$invoice_no = $query->row['invoice_no'] + 1;
			} else {
				$invoice_no = 1;
			}

			$this->db->query("UPDATE `" . DB_PREFIX . "order` SET `invoice_no` = '" . (int)$invoice_no . "', `invoice_prefix` = '" . $this->db->escape($order_info['invoice_prefix']) . "' WHERE `order_id` = '" . (int)$order_id . "'");

			return $order_info['invoice_prefix'] . $invoice_no;
		}

		return '';
	}

	/**
	 * @param int $order_id
	 *
	 * @return int
	 */
	public function getRewardTotal(int $order_id): int {
		$query = $this->db->query("SELECT SUM(reward) AS `total` FROM `" . DB_PREFIX . "order_product` WHERE `order_id` = '" . (int)$order_id . "'");

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

	/**
	 * @param int $order_id
	 * @param int $start
	 * @param int $limit
	 *
	 * @return array
	 */
	public function getHistories(int $order_id, int $start = 0, int $limit = 10): array {
		if ($start < 0) {
			$start = 0;
		}

		if ($limit < 1) {
			$limit = 10;
		}

		$query = $this->db->query("SELECT oh.`date_added`, os.`name` AS `status`, oh.`comment`, oh.`notify` FROM `" . DB_PREFIX . "order_history` oh LEFT JOIN `" . DB_PREFIX . "order_status` os ON oh.`order_status_id` = os.`order_status_id` WHERE oh.`order_id` = '" . (int)$order_id . "' AND os.`language_id` = '" . (int)$this->config->get('config_language_id') . "' ORDER BY oh.`date_added` DESC LIMIT " . (int)$start . "," . (int)$limit);

		return $query->rows;
	}

	/**
	 * @param int $order_id
	 *
	 * @return int
	 */
	public function getTotalHistories(int $order_id): int {
		$query = $this->db->query("SELECT COUNT(*) AS `total` FROM `" . DB_PREFIX . "order_history` WHERE `order_id` = '" . (int)$order_id . "'");

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

	/**
	 * @param int $order_status_id
	 *
	 * @return int
	 */
	public function getTotalHistoriesByOrderStatusId(int $order_status_id): int {
		$query = $this->db->query("SELECT COUNT(*) AS `total` FROM `" . DB_PREFIX . "order_history` WHERE `order_status_id` = '" . (int)$order_status_id . "'");

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

	/**
	 * @param array $products
	 * @param int   $start
	 * @param int   $end
	 *
	 * @return array
	 */
	public function getEmailsByProductsOrdered(array $products, int $start, int $end): array {
		$implode = [];

		foreach ($products as $product_id) {
			$implode[] = "op.`product_id` = '" . (int)$product_id . "'";
		}

		$query = $this->db->query("SELECT DISTINCT o.`email` FROM `" . DB_PREFIX . "order` o LEFT JOIN `" . DB_PREFIX . "order_product` op ON (o.`order_id` = op.`order_id`) WHERE (" . implode(" OR ", $implode) . ") AND o.`order_status_id` <> '0' LIMIT " . (int)$start . "," . (int)$end);

		return $query->rows;
	}

	/**
	 * @param array $products
	 *
	 * @return int
	 */
	public function getTotalEmailsByProductsOrdered(array $products): int {
		$implode = [];

		foreach ($products as $product_id) {
			$implode[] = "op.`product_id` = '" . (int)$product_id . "'";
		}

		$query = $this->db->query("SELECT COUNT(DISTINCT o.`email`) AS `total` FROM `" . DB_PREFIX . "order` o LEFT JOIN `" . DB_PREFIX . "order_product` op ON (o.`order_id` = op.`order_id`) WHERE (" . implode(" OR ", $implode) . ") AND o.`order_status_id` <> '0'");

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