<?php
/**
 * For the full copyright and license information, please view the
 * docs/licenses/LICENSE.txt file that was distributed with this source code.
 */

/**
 * Class ConnectionsSourceCore.
 */
class ConnectionsSourceCore extends ObjectModel
{
    public $id_connections;
    public $http_referer;
    public $request_uri;
    public $keywords;
    public $date_add;
    public static $uri_max_size = 255;

    /**
     * @see ObjectModel::$definition
     */
    public static $definition = [
        'table' => 'connections_source',
        'primary' => 'id_connections_source',
        'fields' => [
            'id_connections' => ['type' => self::TYPE_INT, 'validate' => 'isUnsignedId', 'required' => true],
            'http_referer' => ['type' => self::TYPE_STRING, 'validate' => 'isAbsoluteUrl', 'size' => 255],
            'request_uri' => ['type' => self::TYPE_STRING, 'validate' => 'isUrl', 'size' => 255],
            'keywords' => ['type' => self::TYPE_STRING, 'validate' => 'isMessage', 'size' => 255],
            'date_add' => ['type' => self::TYPE_DATE, 'validate' => 'isDate', 'required' => true],
        ],
    ];

    public static function logHttpReferer(?Cookie $cookie = null)
    {
        if (!$cookie) {
            $cookie = Context::getContext()->cookie;
        }
        if (!isset($cookie->id_connections) || !Validate::isUnsignedInt($cookie->id_connections)) {
            return false;
        }

        // If the referrer is not correct, we drop the connection
        if (isset($_SERVER['HTTP_REFERER']) && !Validate::isAbsoluteUrl($_SERVER['HTTP_REFERER'])) {
            return false;
        }

        $source = new ConnectionsSource();
        $source->request_uri = Tools::getHttpHost();

        // There are a few more operations if there is a referrer
        if (!empty($_SERVER['HTTP_REFERER'])) {
            // If the referrer is internal (i.e. from your own website), then we drop the connection
            $parsed = parse_url($_SERVER['HTTP_REFERER']);
            $parsedHost = parse_url(Tools::getProtocol() . $source->request_uri . __PS_BASE_URI__);

            if (!isset($parsed['host']) || !isset($parsed['path']) || !isset($parsedHost['path'])) {
                return false;
            }

            if (
                preg_replace('/^www./', '', $parsed['host']) == preg_replace('/^www./', '', $source->request_uri)
                && !strncmp($parsed['path'], $parsedHost['path'], strlen(__PS_BASE_URI__))
            ) {
                return false;
            }

            $source->http_referer = substr($_SERVER['HTTP_REFERER'], 0, ConnectionsSource::$uri_max_size);
            $source->keywords = substr(trim(SearchEngine::getKeywords($_SERVER['HTTP_REFERER'])), 0, ConnectionsSource::$uri_max_size);
        }

        $source->id_connections = (int) $cookie->id_connections;

        if (isset($_SERVER['REQUEST_URI'])) {
            $source->request_uri .= $_SERVER['REQUEST_URI'];
        } elseif (isset($_SERVER['REDIRECT_URL'])) {
            $source->request_uri .= $_SERVER['REDIRECT_URL'];
        }

        if (!Validate::isUrl($source->request_uri)) {
            $source->request_uri = '';
        } else {
            $source->request_uri = substr($source->request_uri, 0, ConnectionsSource::$uri_max_size);
        }

        return $source->add();
    }

    /**
     * Get Order sources.
     *
     * @param int $idOrder Order ID
     *
     * @return array|false|mysqli_result|PDOStatement|resource|null
     */
    public static function getOrderSources($idOrder)
    {
        return Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
		SELECT cos.`http_referer`, cos.`request_uri`, cos.`keywords`, cos.`date_add`
		FROM `' . _DB_PREFIX_ . 'orders` o
		INNER JOIN `' . _DB_PREFIX_ . 'guest` g ON g.`id_customer` = o.`id_customer`
		INNER JOIN `' . _DB_PREFIX_ . 'connections` co  ON co.`id_guest` = g.`id_guest`
		INNER JOIN `' . _DB_PREFIX_ . 'connections_source` cos ON cos.`id_connections` = co.`id_connections`
		WHERE `id_order` = ' . (int) $idOrder . '
		ORDER BY cos.`date_add` DESC');
    }
}