<?php

/*
 * LibreNMS
 *
 * Copyright (c) 2014 Neil Lathwood <https://github.com/laf/ http://www.lathwood.co.uk/fa>
 *
 * 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.
 */

if ($config['influxdb']['enable'] === true) {
    include $config['install_dir'].'/lib/influxdb-php/vendor/autoload.php';
}//end if

function influxdb_connect() {
    global $config;

    $influxdb_cred = '';
    if (!empty($config['influxdb']['username']) && !empty($config['influxdb']['password'])) {
        $influxdb_cred = $config['influxdb']['username'].':'.$config['influxdb']['password'].'@';
        d_echo('Using authentication for InfluxDB');
    }
    $influxdb_url = $influxdb_cred.$config['influxdb']['host'].':'.$config['influxdb']['port'].'/'.$config['influxdb']['db'];
    d_echo($config['influxdb']['transport'] . " transport being used");
    if ($config['influxdb']['transport'] == 'http') {
        $influxdb_conn = 'influxdb';
    }
    elseif ($config['influxdb']['transport'] == 'udp') {
        $influxdb_conn = 'udp+influxdb';
    }
    else {
        echo 'InfluxDB support enabled but no valid transport details provided';
    }

    $db = \InfluxDB\Client::fromDSN($influxdb_conn.'://'.$influxdb_url);
    return($db);

}// end influxdb_connect

function influx_update($device,$measurement,$tags=array(),$fields) {
    global $influxdb,$config,$console_color;
    $tmp_fields = array();
    $tmp_tags['hostname'] = $device['hostname'];
    foreach ($tags as $k => $v) {
        $tmp_tags[$k] = $v;
    }
    foreach ($fields as $k => $v) {
        $tmp_fields[$k] = force_influx_data('f',$v);
    }
        
    d_echo("\nInfluxDB data:\n");
    d_echo($measurement);
    d_echo($tmp_tags);
    d_echo($tmp_fields);
    d_echo("\nEND\n");

    if ($config['noinfluxdb'] !== true) {
        $points = array(
            new InfluxDB\Point(
                $measurement,
                null, // the measurement value
                $tmp_tags,
                $tmp_fields // optional additional fields
            )
        );
        $result = $influxdb->writePoints($points);
    }
    else {
        print $console_color->convert('[%gInfluxDB Disabled%n] ', false);
    }//end if
}// end influx_update