<?php
/*
 * 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.
 *
 * @package    LibreNMS
 * @subpackage graphs
 * @link       https://www.librenms.org
 * @copyright  2017 LibreNMS
 * @author     LibreNMS Contributors
*/

require 'includes/html/graphs/common.inc.php';

$stacked = generate_stacked_graphs();

$length = 10;
$percentile = $percentile ?? false;
$print_total = $print_total ?? false;

if (! isset($percentile)) {
    $length += 2;
}

if (! isset($out_text)) {
    $out_text = 'Out';
}

if (! isset($in_text)) {
    $in_text = 'In';
}

$unit_text = str_pad(truncate($unit_text, $length), $length);
$in_text = str_pad(truncate($in_text, $length), $length);
$out_text = str_pad(truncate($out_text, $length), $length);

$rrd_options .= ' DEF:' . $out . '=' . $rrd_filename . ':' . $ds_out . ':AVERAGE';
$rrd_options .= ' DEF:' . $in . '=' . $rrd_filename . ':' . $ds_in . ':AVERAGE';
$rrd_options .= ' DEF:' . $out . '_max=' . $rrd_filename . ':' . $ds_out . ':MAX';
$rrd_options .= ' DEF:' . $in . '_max=' . $rrd_filename . ':' . $ds_in . ':MAX';
$rrd_options .= ' CDEF:dout_max=out_max,' . $stacked['stacked'] . ',*';
$rrd_options .= ' CDEF:dout=out,' . $stacked['stacked'] . ',*';
$rrd_options .= ' CDEF:both=in,out,+';
if ($print_total) {
    $rrd_options .= ' VDEF:totin=in,TOTAL';
    $rrd_options .= ' VDEF:totout=out,TOTAL';
    $rrd_options .= ' VDEF:tot=both,TOTAL';
}

if ($percentile) {
    $rrd_options .= ' VDEF:percentile_in=in,' . $percentile . ',PERCENT';
    $rrd_options .= ' VDEF:percentile_out=out,' . $percentile . ',PERCENT';
    $rrd_options .= ' VDEF:dpercentile_out=dout,' . $percentile . ',PERCENT';
}

if (! empty($graph_max)) {
    $rrd_options .= ' AREA:in_max#' . $colour_area_in_max . $stacked['transparency'] . ':';
    $rrd_options .= ' AREA:dout_max#' . $colour_area_out_max . $stacked['transparency'] . ':';
}

if ($graph_params->visible('previous')) {
    $rrd_options .= ' DEF:' . $out . 'X=' . $rrd_filename . ':' . $ds_out . ':AVERAGE:start=' . $prev_from . ':end=' . $from;
    $rrd_options .= ' DEF:' . $in . 'X=' . $rrd_filename . ':' . $ds_in . ':AVERAGE:start=' . $prev_from . ':end=' . $from;
    $rrd_options .= ' DEF:' . $out . '_maxX=' . $rrd_filename . ':' . $ds_out . ':MAX:start=' . $prev_from . ':end=' . $from;
    $rrd_options .= ' DEF:' . $in . '_maxX=' . $rrd_filename . ':' . $ds_in . ':MAX:start=' . $prev_from . ':end=' . $from;
    $rrd_options .= ' SHIFT:' . $out . "X:$period";
    $rrd_options .= ' SHIFT:' . $in . "X:$period";
    $rrd_options .= ' SHIFT:' . $out . "_maxX:$period";
    $rrd_options .= ' SHIFT:' . $in . "_maxX:$period";

    $rrd_options .= ' CDEF:dout_maxX=out_maxX,' . $stacked['stacked'] . ',*';
    $rrd_options .= ' CDEF:doutX=outX,' . $stacked['stacked'] . ',*';
    $rrd_options .= ' CDEF:bothX=inX,outX,+';
    if ($print_total) {
        $rrd_options .= ' VDEF:totinX=inX,TOTAL';
        $rrd_options .= ' VDEF:totoutX=outX,TOTAL';
        $rrd_options .= ' VDEF:totX=bothX,TOTAL';
    }

    if ($percentile) {
        $rrd_options .= ' VDEF:percentile_inX=inX,' . $percentile . ',PERCENT';
        $rrd_options .= ' VDEF:percentile_outX=outX,' . $percentile . ',PERCENT';
        $rrd_options .= ' VDEF:dpercentile_outX=doutX,' . $percentile . ',PERCENT';
    }

    if ($graph_max) {
        $rrd_options .= ' AREA:in_max#' . $colour_area_in_max . ':';
        $rrd_options .= ' AREA:dout_max#' . $colour_area_out_max . ':';
    }
}//end if

$rrd_options .= ' AREA:in#' . $colour_area_in . $stacked['transparency'] . ':';
$rrd_options .= " COMMENT:'" . $unit_text . '      Now       Ave      Max';

if ($percentile) {
    $rrd_options .= '      ' . $percentile . 'th %';
}

$rrd_options .= "\\n'";
$rrd_options .= ' LINE1.25:in#' . $colour_line_in . ":'" . $in_text . "'";
$rrd_options .= ' GPRINT:in:LAST:%6.' . $float_precision . 'lf%s';
$rrd_options .= ' GPRINT:in:AVERAGE:%6.' . $float_precision . 'lf%s';
$rrd_options .= ' GPRINT:in_max:MAX:%6.' . $float_precision . 'lf%s';

if ($percentile) {
    $rrd_options .= ' GPRINT:percentile_in:%6.' . $float_precision . 'lf%s';
}

$rrd_options .= ' COMMENT:\\n';
$rrd_options .= ' AREA:dout#' . $colour_area_out . $stacked['transparency'] . ':';
$rrd_options .= ' LINE1.25:dout#' . $colour_line_out . ":'" . $out_text . "'";
$rrd_options .= ' GPRINT:out:LAST:%6.' . $float_precision . 'lf%s';
$rrd_options .= ' GPRINT:out:AVERAGE:%6.' . $float_precision . 'lf%s';
$rrd_options .= ' GPRINT:out_max:MAX:%6.' . $float_precision . 'lf%s';

if ($percentile) {
    $rrd_options .= ' GPRINT:percentile_out:%6.' . $float_precision . 'lf%s';
}

$rrd_options .= ' COMMENT:\\n';

if ($print_total) {
    $rrd_options .= " GPRINT:tot:'Total %6." . $float_precision . "lf%s'";
    $rrd_options .= " GPRINT:totin:'(In %6." . $float_precision . "lf%s'";
    $rrd_options .= " GPRINT:totout:'Out %6." . $float_precision . "lf%s)\l'";
}

if ($percentile) {
    $rrd_options .= ' LINE1:percentile_in#aa0000';
    $rrd_options .= ' LINE1:dpercentile_out#aa0000';
}

if ($graph_params->visible('previous')) {
    $rrd_options .= ' LINE1.25:in' . $format . "X#666666:'Prev In \\\\n'";
    $rrd_options .= ' AREA:in' . $format . 'X#99999966' . $stacked['transparency'] . ':';
    $rrd_options .= ' LINE1.25:dout' . $format . "X#666666:'Prev Out'";
    $rrd_options .= ' AREA:dout' . $format . 'X#99999966' . $stacked['transparency'] . ':';
}

$rrd_options .= ' HRULE:0#999999';

unset($stacked);