<?php

class ModelExtensionPaymentPayanyway extends Model {
	/**
	 * @param array<string, mixed> $address
	 * @return array<string, mixed>
	 */
	public function getMethod(array $address) {
		$this->load->language('extension/payment/payanyway');

		if (!$this->isModuleEnabled() ||
			!$this->isCurrencySupported() ||
			!$this->isGeoZoneValid($address)
		) {
			return array();
		}

		return array(
			'code' => 'payanyway',
			'title' => $this->language->get('text_title'),
			'terms' => '',
			'sort_order' => $this->config->get('payment_payanyway_sort_order'),
		);
	}

	/**
	 * Блокировка заказа на время Pay URL (GET_LOCK MySQL/MariaDB): два уведомления подряд
	 * не обрабатываются параллельно. Снимается releaseOrderLock() или с закрытием соединения.
	 *
	 * @param int $orderId
	 * @param int $timeoutSeconds
	 * @return bool
	 */
	public function acquireOrderLock($orderId, $timeoutSeconds) {
		$query = $this->db->query("SELECT GET_LOCK('" . $this->db->escape($this->getOrderLockName($orderId)) . "', " . (int)$timeoutSeconds . ") AS acquired");

		return isset($query->row['acquired']) && (1 === (int)$query->row['acquired']);
	}

	/**
	 * @param int $orderId
	 * @return void
	 */
	public function releaseOrderLock($orderId) {
		$this->db->query("SELECT RELEASE_LOCK('" . $this->db->escape($this->getOrderLockName($orderId)) . "')");
	}

	/**
	 * Заказ когда-либо получал этот статус — по истории заказа.
	 *
	 * @param int $orderId
	 * @param int $orderStatusId
	 * @return bool
	 */
	public function hasOrderStatusInHistory($orderId, $orderStatusId) {
		$query = $this->db->query("SELECT 1 FROM `" . DB_PREFIX . "order_history`
				WHERE `order_id` = '" . (int)$orderId . "'
				AND `order_status_id` = '" . (int)$orderStatusId . "'
				LIMIT 1");

		return $query->num_rows > 0;
	}

	/**
	 * Имя блокировки — не длиннее 64 символов и своё для каждой БД магазина.
	 *
	 * @param int $orderId
	 * @return string
	 */
	private function getOrderLockName($orderId) {
		return 'payanyway_' . substr(md5(DB_DATABASE . '.' . DB_PREFIX), 0, 16) . '_' . (int)$orderId;
	}

	/** @return bool */
	private function isModuleEnabled() {
		return (bool)$this->config->get('payment_payanyway_status');
	}

	/** @return bool */
	private function isCurrencySupported() {
		$shopCurrency = isset($this->session->data['currency']) ? $this->session->data['currency'] : '';

		return $shopCurrency === $this->config->get('payment_payanyway_currency');
	}

	/**
	 * @param array<string, mixed> $address
	 * @return bool
	 */
	private function isGeoZoneValid(array $address) {
		$geoZoneId = (int)$this->config->get('payment_payanyway_geo_zone_id');

		if ($geoZoneId === 0) {
			return true;
		}

		$query = $this->db->query(
			"SELECT * FROM " . DB_PREFIX . "zone_to_geo_zone
            WHERE geo_zone_id = '" . $geoZoneId . "'
            AND country_id = '" . (int)$address['country_id'] . "'
            AND (zone_id = '" . (int)$address['zone_id'] . "' OR zone_id = '0')"
		);

		return $query->num_rows > 0;
	}
}