<?php
/*
 * LibreNMS
 *
 * Copyright (c) 2017 Søren Friis Rosiak <sorenrosiak@gmail.com>
 * 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.  Please see LICENSE.txt at the top level of
 * the source code distribution for details.
 */

namespace LibreNMS\Alert\Transport;

use LibreNMS\Alert\Transport;

class Ciscospark extends Transport
{
    public function deliverAlert($obj, $opts)
    {
        if (empty($this->config)) {
            $room_id = $opts['roomid'];
            $token = $opts['token'];
        } else {
            $room_id = $this->config['room-id'];
            $token = $this->config['api-token'];
        }

        return $this->contactCiscospark($obj, $room_id, $token);
    }

    public function contactCiscospark($obj, $room_id, $token)
    {
        $text = null;
        $data = [
            'roomId' => $room_id,
        ];

        $akey = 'text';
        if ($this->config['use-markdown'] === 'on') {
            $lines = explode("\n", $obj['msg']);
            $mlines = [];
            /* Remove blank lines as they create weird markdown
             * behaviors.
             */
            foreach ($lines as $line) {
                $line = trim($line);
                if ($line != '') {
                    array_push($mlines, $line);
                }
            }
            $text = implode("\n", $mlines);
            $akey = 'markdown';
        } else {
            $text = strip_tags($obj['msg']);
        }
        $data[$akey] = $text;

        $curl = curl_init();
        set_curl_proxy($curl);
        curl_setopt($curl, CURLOPT_URL, 'https://api.ciscospark.com/v1/messages');
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_HTTPHEADER, [
            'Content-type' => 'application/json',
            'Expect:',
            'Authorization: Bearer ' . $token,
        ]);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        $ret = curl_exec($curl);
        $code = curl_getinfo($curl, CURLINFO_HTTP_CODE);

        if ($code != 200) {
            echo "Cisco Spark returned Error, retry later\r\n";

            return false;
        }

        return true;
    }

    public static function configTemplate()
    {
        return [
            'config' => [
                [
                    'title' => 'API Token',
                    'name' => 'api-token',
                    'descr' => 'CiscoSpark API Token',
                    'type' => 'text',
                ],
                [
                    'title' => 'RoomID',
                    'name' => 'room-id',
                    'descr' => 'CiscoSpark Room ID',
                    'type' => 'text',
                ],
                [
                    'title' => 'Use Markdown?',
                    'name' => 'use-markdown',
                    'descr' => 'Use Markdown when sending the alert',
                    'type' => 'checkbox',
                    'default' => false,
                ],
            ],
            'validation' => [
                'api-token' => 'required|string',
                'room-id' => 'required|string',
            ],
        ];
    }
}