<?php
/*
 * LibreNMS module to display graphing for Nagios Service
 *
 * Copyright (c) 2016 Aaron Daniels <aaron@daniels.id.au>
 *
 * 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.
 */

// Get a list of all services for this device.
require_once '../includes/services.inc.php';
$services = service_get($device['device_id']);

// Determine which key is the service we want to show.
if (isset($vars['service'])) {
    // Service is set, find its key.
    foreach ($services as $key => $service) {
        if ($service['service_id'] == $vars['service']) {
            // We have found the service we want.
            $vars['service'] = $key;
        }
    }
}
else {
    // No service set, set the first one.
    if (isset($services[0])) {
        $vars['service'] = 0;
    }
}

// We know our service. build the filename.
$filename = "services-".$services[$vars['service']]['service_id'].".rrd";
$rrd_filename = $config['rrd_dir'] . "/" . $device['hostname'] . "/" . safename ($filename);

// if we have a script for this check, use it.
$check_script = $config['install_dir'].'/includes/services/check_'.strtolower($services[$vars['service']]['service_type']).'.inc.php';
if (is_file($check_script)) {
    include $check_script;

    // If we have a replacement DS use it.
    if (isset($check_ds)) {
        $services[$vars['service']]['service_ds'] = $check_ds;
    }
}

include "includes/graphs/common.inc.php";
$rrd_options .= " -l 0 -E ";
$rrd_options .= " COMMENT:'                       Now      Avg      Max\\n'";
$rrd_additions = "";

// Remove encoded characters
$services[$vars['service']]['service_ds'] = htmlspecialchars_decode($services[$vars['service']]['service_ds']);

if ($services[$vars['service']]['service_ds'] != "") {
    $graphinfo = json_decode($services[$vars['service']]['service_ds'],TRUE);

    // Do we have a DS set
    if (!isset($graphinfo[$vars['ds']])) {
        foreach ($graphinfo as $k => $v) {
            // Select a DS to display.
            $vars['ds'] = $k;
        }
    }

    // Need: DS name, Label
    $ds = $vars['ds'];
    $label = $graphinfo[$vars['ds']];

    if (file_exists($rrd_filename)) {

        if (isset($check_graph)) {
            // We have a graph definition, use it.
            $rrd_additions .= $check_graph[$ds];
        }
        else {
            // Build the graph ourselves
            $color = $config['graph_colours']['mixed'][2];

            $rrd_additions .= " DEF:DS=" . $rrd_filename . ":".$ds.":AVERAGE ";
            $rrd_additions .= " AREA:DS#" . $color . ":'" . str_pad(substr(ucfirst($ds)." (".$label.")",0,15),15) . "' ";
            $rrd_additions .= " GPRINT:DS:LAST:%5.2lf%s ";
            $rrd_additions .= " GPRINT:DS:AVERAGE:%5.2lf%s ";
            $rrd_additions .= " GPRINT:DS:MAX:%5.2lf%s\\\l ";
        }
    }
}

if ($rrd_additions == "") {
    // We didn't add any data points.
}
else {
    $rrd_options .= $rrd_additions;
}
