<?php
/**
 * Observium
 *
 *   This file is part of Observium.
 *
 * @package    observium
 * @subpackage graphs
 * @copyright  (C) Adam Armstrong
 *
 */

include($config['html_dir'] . "/includes/graphs/common.inc.php");

$graph_return['valid_options'][] = "alt_y";
$graph_return['valid_options'][] = "trend";

// Here we scale the number of numerical columns shown to make sure we keep the text.

if ($width > 600) {
    $data_show = ['lst', 'avg', 'min', 'max', 'tot'];
} elseif ($width > 400) {
    $data_show = ['lst', 'avg', 'max', 'tot'];
} elseif ($width > 300) {
    $data_show = ['lst', 'avg', 'max', 'tot'];
} else {
    $data_show = ['lst', 'avg', 'max'];
}

// Drop total from view if requested not to show
if ($args['nototal'] || $nototal) {
    if (($key = array_search('tot', $data_show)) !== FALSE) {
        unset($data_show[$key]);
    }
}

$data_len = safe_count($data_show) * 8;

// Here we scale the length of the description to make sure we keep the numbers

if ($width > 600) {
    $descr_len = 40;
} elseif ($width > 300) {
    $descr_len = floor(($width + 42) / 8) - $data_len;
} else {
    $descr_len = floor(($width + 42) / 7) - $data_len;
}

// Build the legend headers using the length values previously calculated

if (!isset($unit_text)) {
    if ($format == "octets" || $format == "bytes") {
        $units     = "Bps";
        $format    = "bytes";
        $unit_text = "Bytes/s";
    } else {
        $units     = "bps";
        $format    = "bits";
        $unit_text = "Bits/s";
    }
}

if ($legend != 'no') {
    $rrd_options .= " COMMENT:'" . rrdtool_escape($unit_text, $descr_len) . "'";
    if (in_array("lst", $data_show)) {
        $rrd_options .= " COMMENT:'   Now'";
    }
    if (in_array("avg", $data_show)) {
        $rrd_options .= " COMMENT:'    Avg'";
    }
    if (in_array("min", $data_show)) {
        $rrd_options .= " COMMENT:'    Min'";
    }
    if (in_array("max", $data_show)) {
        $rrd_options .= " COMMENT:'    Max'";
    }
    if (in_array("tot", $data_show)) {
        $rrd_options .= " COMMENT:'  Total'";
    }
    $rrd_options .= " COMMENT:'\\l'";
}

$colour_iter = 0;
$i           = 0;

foreach ($rrd_list as $rrd) {

    $i++;

    if ($rrd['colour']) {
        $colour = $rrd['colour'];
    } else {
        if (!isset($config['graph_colours'][$colours][$colour_iter])) {
            $colour_iter = 0;
        }
        $colour = $config['graph_colours'][$colours][$colour_iter];
        $colour_iter++;
    }

    $ds       = $rrd['ds'];
    $filename = rrdtool_escape($rrd['filename']);

    $descr = rrdtool_escape($rrd['descr'], $descr_len);

    $id = "ds" . $i;

    $rrd_options .= " DEF:" . $id . "=$filename:$ds:AVERAGE";

    if ($simple_rrd) {
        $rrd_options .= " CDEF:" . $id . "min=" . $id . " ";
        $rrd_options .= " CDEF:" . $id . "max=" . $id . " ";
    } else {
        $rrd_options .= " DEF:" . $id . "min=$filename:$ds:MIN";
        $rrd_options .= " DEF:" . $id . "max=$filename:$ds:MAX";
    }

    if ($rrd['invert']) {
        $rrd_options .= " CDEF:" . $id . "i=" . $id . ",-1,*";
        if (!empty($rrd['areacolour'])) {
            $rrd_optionsb .= " AREA:" . $id . "i#" . $rrd['areacolour'];
        }
        $rrd_optionsb .= " LINE1.25:" . $id . "i#" . $colour . ":'$descr'";
    } else {
        if (!empty($rrd['areacolour'])) {
            $rrd_optionsb .= " AREA:" . $id . "#" . $rrd['areacolour'];
        }
        $rrd_optionsb .= " LINE1.25:" . $id . "#" . $colour . ":'$descr'";
    }

    if ($vars['trend']) {
        $rrd_options .= " CDEF:" . $id . "smooth=" . $id . ",1800,TREND";
        $rrd_options .= " CDEF:" . $id . "predict=586400,-7,1800," . $id . ",PREDICT";
        $rrd_options .= " LINE1:" . $id . "predict#" . $colour . "::dashes=3";
    }

    if (in_array("lst", $data_show)) {
        $rrd_optionsb .= " GPRINT:" . $id . ":LAST:%6.1lf%s";
    }
    if (in_array("avg", $data_show)) {
        $rrd_optionsb .= " GPRINT:" . $id . ":AVERAGE:%6.1lf%s";
    }
    if (in_array("min", $data_show)) {
        $rrd_optionsb .= " GPRINT:" . $id . "min:MIN:%6.1lf%s";
    }
    if (in_array("max", $data_show)) {
        $rrd_optionsb .= " GPRINT:" . $id . "max:MAX:%6.1lf%s";
    }

    $rrd_optionsb .= " COMMENT:'\\l'";
    #$colour_iter++;

}

$rrd_options .= $rrd_optionsb;
$rrd_options .= " HRULE:0#555555";

// EOF