<?php

ini_set('allow_url_fopen', 0);
ini_set('display_errors', 0);

if (strpos($_SERVER['REQUEST_URI'], "debug"))
{
  $debug = "1";
  ini_set('display_errors', 1);
  ini_set('display_startup_errors', 1);
  ini_set('log_errors', 1);
  ini_set('error_reporting', E_ALL);
} else {
  $debug = FALSE;
  ini_set('display_errors', 0);
  ini_set('display_startup_errors', 0);
  ini_set('log_errors', 0);
  ini_set('error_reporting', 0);
}

include("../includes/defaults.inc.php");
include("../config.php");
include("../includes/functions.php");
include("includes/functions.inc.php");
include("includes/authenticate.inc.php");
if (!$_SESSION['authenticated']) { echo("unauthenticated"); exit; }
require("includes/jpgraph/src/jpgraph.php");
include("includes/jpgraph/src/jpgraph_line.php");
include("includes/jpgraph/src/jpgraph_utils.inc.php");

if (is_numeric($_GET['bill_id']))
{
  if (bill_permitted($_GET['bill_id']))
  {
    $bill_id = $_GET['bill_id'];
  } else {
    echo("Unauthorised Access Prohibited.");
    exit;
  }
} else {
  echo("Unauthorised Access Prohibited.");
  exit;
}

$start = $_GET[from];
$end = $_GET[to];
$xsize = $_GET[x];
$ysize = $_GET[y];
$count = $_GET[count];
$count = $count + 0;
$iter = 1;

if ($_GET[type]) { $type = $_GET[type]; } else { $type = "date"; }

$dur = $end - $start;

if ($type == "date") { $date_format = "%d %b %H:%i"; $tickinterval = "2"; } else { $date_format = "%H"; $tickinterval = "1"; }

$datefrom = date('Ymthis', $start);
$dateto = date('Ymthis',   $end);

#echo("$start || $end || ");

#echo("$datefrom || $dateto");

#$datefrom = dbFetchCell("SELECT FROM_UNIXTIME($start, '%Y%m%d')") . "000000";
#$dateto   = dbFetchCell("SELECT FROM_UNIXTIME($end, '%Y%m%d')") . "235959";

$rate_data = getRates($bill_id,$datefrom,$dateto);
$rate_95th = $rate_data['rate_95th'] * 1000;
$rate_average = $rate_data['rate_average'] * 1000;

$bi_a = dbFetchRow("SELECT * FROM bills WHERE bill_id = ?", array($bill_id));
$bill_name = $bi_a['bill_name'];

$counttot = dbFetchCell("SELECT count(`delta`) FROM `bill_data` WHERE `bill_id` = ? AND `timestamp` >= ? AND `timestamp` <= ?", array($bill_id, $datefrom, $dateto));

$count = round($counttot / (($ysize - 100) * 2), 0);
if ($count <= 1) { $count = 2; }

#$count = 8;

#$count = round($counttot / 260, 0);
#if ($count <= 1) { $count = 2; }

$max = dbFetchCell("SELECT delta FROM bill_data WHERE bill_id = ? AND timestamp >= ? AND timestamp <= ? ORDER BY delta DESC LIMIT 0,1", array($bill_id, $datefrom, $dateto));
if ($max > 1000000) { $div = "1000000"; $yaxis = "Mbit/sec";  } else { $div = "1000"; $yaxis = "Kbit/sec"; }

$i = '0';

#$start = "SELECT *, UNIX_TIMESTAMP(timestamp) AS formatted_date FROM bill_data WHERE bill_id = $bill_id AND timestamp >=$datefrom AND timestamp <= $dateto ORDER BY timestamp ASC LIMIT 0,1"),0);
#$end   = "SELECT *, UNIX_TIMESTAMP(timestamp) AS formatted_date FROM bill_data WHERE bill_id = $bill_id AND timestamp >=$datefrom AND timestamp <= $dateto ORDER BY timestamp DESC LIMIT 0,1"),0);
$dur = $end - $start;

#$sql = "SELECT *, UNIX_TIMESTAMP(timestamp) AS formatted_date FROM bill_data WHERE bill_id = $bill_id AND timestamp >= $datefrom AND timestamp <= $dateto ORDER BY timestamp ASC";

foreach (dbFetch("SELECT *, UNIX_TIMESTAMP(timestamp) AS formatted_date FROM bill_data WHERE bill_id = ? AND timestamp >= ? AND timestamp <= ? ORDER BY timestamp ASC", array($bill_id, $datefrom, $dateto)) as $row)
{
  @$timestamp = $row['formatted_date'];
  if (!$first) { $first = $timestamp; }
  @$delta = $row['delta'];
  @$period = $row['period'];
  @$in_delta = $row['in_delta'];
  @$out_delta = $row['out_delta'];
  @$in_value = round($in_delta * 8 / $period / $div, 2);
  @$out_value = round($out_delta * 8 / $period / $div, 2);

  #@$data[] = $in_value + $out_value;
  #@$in_data[] = $in_value;
  #@$out_data[] = $out_value;
  #  @$ticks[] = $timestamp;
  #@$per_data[] = $rate_95th / 1000;
  #@$ave_data[] = $rate_average / 1000;

  @$last = $timestamp;

  $iter_in    = $iter_in + $in_delta;
  $iter_out     = $iter_out + $out_delta;
  $iter_period  = $iter_period + $period;

  if ($iter == $count)
  {
    $out_data[$i]   = round($iter_out * 8 / $iter_period / $div, 2);
    $in_data[$i]   = round($iter_in * 8 / $iter_period / $div, 2);
    $tot_data[$i]   = $out_data[$i] + $in_data[$i];
    $ticks[$i]   = date('M j g:ia', $timestamp);
    $ticks[$i]  = $timestamp;

    if ($dur < 172800)
    {
      $hour = date('h', $timestamp);
      if ($hour != $lasthour) { $tickPositions[] = $i; $tickLabels[] = date('ga', $timestamp); }
      $lasthour = $hour;
    } elseif ($dur < 604800) {
      $day = date('d', $timestamp);
      if ($day != $lastday) { $tickPositions[] = $i; $tickLabels[] = date('D', $timestamp); $h = 0; }
      $lastday = $day;

      $hour = trim(date('g', $timestamp));
      if ($hour != $lasthour)
      {
        if ($hour == '12') { $tickMinPositions[] = $i; $h = 0;  } $h++;
      }

      $lasthour = $hour;
    } else {
      $day = date('d', $timestamp);
      if ($day != $lastday) { $tickPositions[] = $i; $tickLabels[] = date('dS', $timestamp); }
      $lastday = $day;
    }

    $per_data[$i]   = $rate_95th / $div;
    $ave_data[$i]   = $rate_average / $div;
    $timestamps[$i] = $timestamp;
    $iter       = "1";
    $i++;
    unset($iter_out, $iter_in, $iter_period);
  }

  $iter++;
}

#print_r($ticks);
#print_r($tot_data);

#echo("<pre>");
#print_r($in_data);

$graph_name = date('M j g:ia', $start) . " - " . date('M j g:ia', $last);

$n = count($ticks);
$xmin = $ticks[0];
$xmax = $ticks[$n-1];

$graph_name = date('M j g:ia', $xmin) . " - " . date('M j g:ia', $xmax);


$graph = new Graph($xsize, $ysize, $graph_name);
$graph->img->SetImgFormat("png");
#$graph->img->SetAntiAliasing(true);
$graph->SetScale( "intlin");
#$graph->SetScale('intlin',0,0,$xmin,$xmax);
$graph->title->Set("$graph_name");
$graph->title->SetFont(FF_FONT2,FS_BOLD,10);
$graph->xaxis->SetFont(FF_FONT1,FS_BOLD);

#$graph->xaxis->SetTickLabels($ticks);

if (count($tickPositions) > 24)
{
  $graph->xaxis->SetTextLabelInterval(6);
} elseif (count($tickPositions) > 12) {
  $graph->xaxis->SetTextLabelInterval(2);
}

$graph->xaxis->SetPos('min');
#$graph->xaxis->SetLabelAngle(15);
$graph->yaxis->HideZeroLabel(1);
$graph->yaxis->SetFont(FF_FONT1);
$graph->yaxis->SetLabelAngle(0);
$graph->xaxis->title->SetFont(FF_FONT1,FS_NORMAL,10);
$graph->yaxis->title->SetFont(FF_FONT1,FS_NORMAL,10);
$graph->yaxis->SetTitleMargin(50);
$graph->xaxis->SetTitleMargin(30);
#$graph->xaxis->HideLastTickLabel();
#$graph->xaxis->HideFirstTickLabel();
#$graph->yaxis->scale->SetAutoMin(1);
#$graph->xaxis->title->Set("$type");
$graph->yaxis->title->Set("$yaxis");

$graph->xaxis->SetTickPositions($tickPositions,$tickMinPositions,$tickLabels);
$graph->xaxis->SetMajTickPositions($tickPositions,$tickLabels);

$graph->ygrid->SetFill(true,'#EFEFEF@0.5','#FFFFFF@0.5');
$graph->xgrid->Show(true,true);
$graph->xgrid->SetColor('#e0e0e0','#efefef');
$graph->SetMarginColor('white');
$graph->SetFrame(false);
$graph->SetMargin(75,30,30,45);
$graph->legend->SetFont(FF_FONT1,FS_NORMAL);

$lineplot = new LinePlot($tot_data);
#$lineplot->SetLegend("Traffic total");
$lineplot->SetColor("#d5d5d5");
$lineplot->SetFillColor("#d5d5d5");
$lineplot_in = new LinePlot($in_data);
#$lineplot_in->SetLegend("Traffic In");
$lineplot_in->SetColor("#009900");
$lineplot_out = new LinePlot($out_data);
#$lineplot_out->SetLegend("Traffic Out");
$lineplot_out->SetColor("blue");

if ($_GET['95th'])
{
  $lineplot_95th = new LinePlot($per_data);
  $lineplot_95th ->SetColor("red");
}

if ($_GET['ave'])
{
  $lineplot_ave = new LinePlot($ave_data);
  $lineplot_ave ->SetColor("red");
}

#$graph->legend->SetLayout(LEGEND_HOR);
#$graph->legend->Pos(0.52, 0.85, 'center');

$graph->Add($lineplot);
$graph->Add($lineplot_in);
$graph->Add($lineplot_out);

if ($_GET['95th'])
{
  $graph->Add($lineplot_95th);
}

if ($_GET['ave'])
{
  $graph->Add($lineplot_ave);
}

$graph->stroke();

?>