<?php

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

if ($width > '500') {
    $descr_len = 24;
    // FIXME may even be more imo?
}
else {
    $descr_len  = 12;
    $descr_len += round(($width - 250) / 8);
}

if ($nototal) {
    $descr_len += '2';
    $unitlen  += '2';
}

$unit_text = str_pad(truncate($unit_text, $unitlen), $unitlen);

if ($width > '500') {
    $rrd_options .= " COMMENT:'".substr(str_pad($unit_text, ($descr_len + 5)), 0, ($descr_len + 5))."Now      Min      Max     Avg\l'";
    if (!$nototal) {
        $rrd_options .= " COMMENT:'Total      '";
    }

    $rrd_options .= " COMMENT:'\l'";
}
else {
    $rrd_options .= " COMMENT:'".substr(str_pad($unit_text, ($descr_len + 5)), 0, ($descr_len + 5))."Now      Min      Max     Avg\l'";
}

$unitlen = '10';
if ($nototal) {
    $descr_len += '2';
    $unitlen  += '2';
}

$unit_text = str_pad(truncate($unit_text, $unitlen), $unitlen);

$colour_iter = 0;
foreach ($rrd_list as $i => $rrd) {
    if ($rrd['colour']) {
        $colour = $rrd['colour'];
    }
    else {
        if (!$config['graph_colours'][$colours][$colour_iter]) {
            $colour_iter = 0;
        }

        $colour = $config['graph_colours'][$colours][$colour_iter];
        $colour_iter++;
    }

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

    $rrd_options .= ' DEF:'.$rrd['ds'].$i.'='.$rrd['filename'].':'.$rrd['ds'].':AVERAGE ';

    if ($simple_rrd) {
        $rrd_options .= ' CDEF:'.$rrd['ds'].$i.'min='.$rrd['ds'].$i.' ';
        $rrd_options .= ' CDEF:'.$rrd['ds'].$i.'max='.$rrd['ds'].$i.' ';
    }
    else {
        $rrd_options .= ' DEF:'.$rrd['ds'].$i.'min='.$rrd['filename'].':'.$rrd['ds'].':MIN ';
        $rrd_options .= ' DEF:'.$rrd['ds'].$i.'max='.$rrd['filename'].':'.$rrd['ds'].':MAX ';
    }

    if ($_GET['previous']) {
        $rrd_options .= ' DEF:'.$i.'X='.$rrd['filename'].':'.$rrd['ds'].':AVERAGE:start='.$prev_from.':end='.$from;
        $rrd_options .= ' SHIFT:'.$i."X:$period";
        $thingX      .= $seperatorX.$i.'X,UN,0,'.$i.'X,IF';
        $plusesX     .= $plusX;
        $seperatorX   = ',';
        $plusX        = ',+';
    }

    // Suppress totalling?
    if (!$nototal) {
        $rrd_options .= ' VDEF:tot'.$rrd['ds'].$i.'='.$rrd['ds'].$i.',TOTAL';
    }

    // This this not the first entry?
    if ($i) {
        $stack = ':STACK';
    }

    // if we've been passed a multiplier we must make a CDEF based on it!
    $g_defname = $rrd['ds'];
    if (is_numeric($multiplier)) {
        $g_defname    = $rrd['ds'].'_cdef';
        $rrd_options .= ' CDEF:'.$g_defname.$i.'='.$rrd['ds'].$i.','.$multiplier.',*';
        $rrd_options .= ' CDEF:'.$g_defname.$i.'min='.$rrd['ds'].$i.'min,'.$multiplier.',*';
        $rrd_options .= ' CDEF:'.$g_defname.$i.'max='.$rrd['ds'].$i.'max,'.$multiplier.',*';

        // If we've been passed a divider (divisor!) we make a CDEF for it.
    }
    else if (is_numeric($divider)) {
        $g_defname    = $rrd['ds'].'_cdef';
        $rrd_options .= ' CDEF:'.$g_defname.$i.'='.$rrd['ds'].$i.','.$divider.',/';
        $rrd_options .= ' CDEF:'.$g_defname.$i.'min='.$rrd['ds'].$i.'min,'.$divider.',/';
        $rrd_options .= ' CDEF:'.$g_defname.$i.'max='.$rrd['ds'].$i.'max,'.$divider.',/';
    }

    // Are our text values related to te multiplier/divisor or not?
    if (isset($text_orig) && $text_orig) {
        $t_defname = $rrd['ds'];
    }
    else {
        $t_defname = $g_defname;
    }

    $rrd_options .= ' AREA:'.$g_defname.$i.'#'.$colour.":'".$descr."'$stack";

    $rrd_options .= ' GPRINT:'.$t_defname.$i.':LAST:%5.2lf%s GPRINT:'.$t_defname.$i.'min:MIN:%5.2lf%s';
    $rrd_options .= ' GPRINT:'.$t_defname.$i.'max:MAX:%5.2lf%s GPRINT:'.$t_defname.$i.":AVERAGE:'%5.2lf%s\\n'";

    if (!$nototal) {
        $rrd_options .= ' GPRINT:tot'.$rrd['ds'].$i.":%6.2lf%s'".rrdtool_escape($total_units)."'";
    }

    $rrd_options .= " COMMENT:'\\n'";
}//end foreach

if ($_GET['previous'] == 'yes') {
    if (is_numeric($multiplier)) {
        $rrd_options .= ' CDEF:X='.$thingX.$plusesX.','.$multiplier.',*';
    }
    else if (is_numeric($divider)) {
        $rrd_options .= ' CDEF:X='.$thingX.$plusesX.','.$divider.',/';
    }
    else {
        $rrd_options .= ' CDEF:X='.$thingX.$plusesX;
    }

    $rrd_options .= ' AREA:X#99999999:';
    $rrd_options .= ' LINE1.25:X#666666:';
}