<?php
/**
 * Piwik - free/libre analytics platform
 *
 * @link http://piwik.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 */

namespace Piwik\Plugins\Monolog\Handler;

use Monolog\Handler\AbstractProcessingHandler;
use Monolog\Logger;
use Piwik\Common;
use Piwik\Notification;
use Piwik\Notification\Manager;
use Zend_Session_Exception;

/**
 * Writes log messages into HTML notification box.
 */
class WebNotificationHandler extends AbstractProcessingHandler
{
    protected function write(array $record)
    {
        switch ($record['level']) {
            case Logger::EMERGENCY:
            case Logger::ALERT:
            case Logger::CRITICAL:
            case Logger::ERROR:
                $context = Notification::CONTEXT_ERROR;
                break;
            case Logger::WARNING:
                $context = Notification::CONTEXT_WARNING;
                break;
            default:
                $context = Notification::CONTEXT_INFO;
                break;
        }

        $message = $record['level_name'] . ': ' . htmlentities($record['message'], ENT_COMPAT | ENT_HTML401, 'UTF-8');

        $notification = new Notification($message);
        $notification->context = $context;
        $notification->flags = 0;
        try {
            Manager::notify(Common::getRandomString(), $notification);
        } catch (Zend_Session_Exception $e) {
            // Can happen if this handler is enabled in CLI
            // Silently ignore the error.
        }
    }
}