<?php
/* Copyright (C) 2015 Daniel Preussker <f0o@devilcode.org>
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>. */

/**
 * VictorOps Generic-API Transport - Based on PagerDuty transport
 * @author f0o <f0o@devilcode.org>
 * @author laf <neil@librenms.org>
 * @copyright 2015 f0o, laf, LibreNMS
 * @license GPL
 * @package LibreNMS
 * @subpackage Alerts
 */
namespace LibreNMS\Alert\Transport;

use LibreNMS\Enum\AlertState;
use LibreNMS\Alert\Transport;

class Victorops extends Transport
{
    public function deliverAlert($obj, $opts)
    {
        if (!empty($this->config)) {
            $opts['url'] = $this->config['victorops-url'];
        }
        return $this->contactVictorops($obj, $opts);
    }

    public function contactVictorops($obj, $opts)
    {
        $url = $opts['url'];

        $protocol = array(
            'entity_id' => strval($obj['id'] ? $obj['id'] : $obj['uid']),
            'state_start_time' => strtotime($obj['timestamp']),
            'entity_display_name' => $obj['title'],
            'state_message' => $obj['msg'],
            'monitoring_tool' => 'librenms',
        );
        if ($obj['state'] == AlertState::RECOVERED) {
            $protocol['message_type'] = 'recovery';
        } elseif ($obj['state'] == AlertState::ACKNOWLEDGED) {
            $protocol['message_type'] = 'acknowledgement';
        } elseif ($obj['state'] == AlertState::ACTIVE) {
            $protocol['message_type'] = 'critical';
        }

        foreach ($obj['faults'] as $fault => $data) {
            $protocol['state_message'] .= $data['string'];
        }

        $curl = curl_init();
        set_curl_proxy($curl);
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-type' => 'application/json'));
        curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($protocol));
        $ret  = curl_exec($curl);
        $code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
        if ($code != 200) {
            var_dump("VictorOps returned Error, retry later"); //FIXME: propper debuging
            return false;
        }
        return true;
    }

    public static function configTemplate()
    {
        return [
            'config' => [
                [
                    'title' => 'Post URL',
                    'name' => 'victorops-url',
                    'descr' => 'Victorops Post URL',
                    'type' => 'text'
                ]
            ],
            'validation' => [
                'victorops-url' => 'required|string'
            ]
        ];
    }
}
