<?php

/**
 * Observium
 *
 *   This file is part of Observium.
 *
 * @package    observium
 * @subpackage webinterface
 * @author     Adam Armstrong <adama@memetic.org>
 * @copyright  (C) 2006 - 2012 Adam Armstrong
 *
 */

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/definitions.inc.php");
include("../includes/functions.php");
include("includes/functions.inc.php");
include("includes/authenticate.inc.php");

if ($_SERVER['REMOTE_ADDR'] != $_SERVER['SERVER_ADDR']) { if (!$_SESSION['authenticated']) { echo("unauthenticated"); exit; } }
require_once("includes/jpgraph/src/jpgraph.php");
require_once("includes/jpgraph/src/jpgraph_line.php");
require_once("includes/jpgraph/src/jpgraph_bar.php");
require_once("includes/jpgraph/src/jpgraph_utils.inc.php");
require_once("includes/jpgraph/src/jpgraph_date.php");

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

$start        = $_GET['from'];
$end          = $_GET['to'];
$xsize        = (is_numeric($_GET['x']) ? $_GET['x'] : "800" );
$ysize        = (is_numeric($_GET['y']) ? $_GET['y'] : "250" );
//$count        = (is_numeric($_GET['count']) ? $_GET['count'] : "0" );
//$type         = (isset($_GET['type']) ? $_GET['type'] : "date" );
//$dur          = $end - $start;
//$datefrom     = date('Ymthis', $start);
//$dateto       = date('Ymthis', $end);
$imgtype      = (isset($_GET['type']) ? $_GET['type'] : "historical" );
$imgbill      = (isset($_GET['imgbill']) ? $_GET['imgbill'] : false);
$yaxistitle   = "Bytes";

$in_data      = array();
$out_data     = array();
$tot_data     = array();
$allow_data   = array();
$ave_data     = array();
$overuse_data = array();
$ticklabels   = array();

if ($imgtype == "historical")
{
  $i                   = "0";

  foreach (dbFetchRows("SELECT * FROM `bill_history` WHERE `bill_id` = ? ORDER BY `bill_datefrom` DESC LIMIT 12", array($bill_id)) as $data)
  {
    $datefrom            = strftime("%e %b %Y", strtotime($data['bill_datefrom']));
    $dateto              = strftime("%e %b %Y", strtotime($data['bill_dateto']));
    $datelabel           = $datefrom."\n".$dateto;
    $traf['in']          = $data['traf_in'];
    $traf['out']         = $data['traf_out'];
    $traf['total']       = $data['traf_total'];

    if ($data['bill_type'] == "Quota")
    {
      $traf['allowed'] = $data['bill_allowed'];
      $traf['overuse'] = $data['bill_overuse'];
    } else {
      $traf['allowed'] = "0";
      $traf['overuse'] = "0";
    }

    array_push($ticklabels, $datelabel);
    array_push($in_data, $traf['in']);
    array_push($out_data, $traf['out']);
    array_push($tot_data, $traf['total']);
    array_push($allow_data, $traf['allowed']);
    array_push($overuse_data, $traf['overuse']);
    $i++;
    //print_r($data);
  }

  if ($i < 12)
  {
    $y = 12 - $i;
    for ($x=0;$x<$y;$x++)
    {
      $allowed = (($x == "0") ? $traf['allowed'] : "0" );
      array_push($in_data, "0");
      array_push($out_data, "0");
      array_push($tot_data, "0");
      array_push($allow_data, $allowed);
      array_push($overuse_data, "0");
      array_push($ticklabels, "");
  }
  }
  $yaxistitle = "Gigabytes";
  $graph_name = "Historical bandwidth over the last 12 billing periods";
} else {
  $data       = array();
  $average    = 0;
  if ($imgtype == "day")
  {
    foreach (dbFetch("SELECT DISTINCT UNIX_TIMESTAMP(timestamp) as timestamp, SUM(delta) as traf_total, SUM(in_delta) as traf_in, SUM(out_delta) as traf_out FROM bill_data WHERE `bill_id` = ? AND `timestamp` >= FROM_UNIXTIME(?) AND `timestamp` <= FROM_UNIXTIME(?) GROUP BY DATE(timestamp) ORDER BY timestamp ASC", array($bill_id, $start, $end)) as $data)
    {
      $traf['in']    = (isset($data['traf_in']) ? $data['traf_in'] : 0);
      $traf['out']   = (isset($data['traf_out']) ? $data['traf_out'] : 0);
      $traf['total'] = (isset($data['traf_total']) ? $data['traf_total'] : 0);
      $datelabel     = strftime("%e\n%b", $data['timestamp']);
      array_push($ticklabels, $datelabel);
      array_push($in_data,  $traf['in']);
      array_push($out_data, $traf['out']);
      array_push($tot_data, $traf['total']);
      $average += $data['traf_total'];
    }
    $ave_count = count($tot_data);
    if ($imgbill != false)
    {
      $days = strftime("%e", date($end - $start)) - $ave_count - 1;
      for ($x=0;$x<$days;$x++)
      {
        array_push($ticklabels, "");
        array_push($in_data, 0);
        array_push($out_data, 0);
        array_push($tot_data, 0);
      }
    }
  } elseif ($imgtype == "hour")
  {
    foreach (dbFetch("SELECT DISTINCT UNIX_TIMESTAMP(timestamp) as timestamp, SUM(delta) as traf_total, SUM(in_delta) as traf_in, SUM(out_delta) as traf_out FROM bill_data WHERE `bill_id` = ? AND `timestamp` >= FROM_UNIXTIME(?) AND `timestamp` <= FROM_UNIXTIME(?) GROUP BY HOUR(timestamp) ORDER BY timestamp ASC", array($bill_id, $start, $end)) as $data)
    {
      $traf['in']        = (isset($data['traf_in']) ? $data['traf_in'] : 0);
      $traf['out']        = (isset($data['traf_out']) ? $data['traf_out'] : 0);
      $traf['total']        = (isset($data['traf_total']) ? $data['traf_total'] : 0);
      $datelabel        = strftime("%H:%M", $data['timestamp']);
      array_push($ticklabels, $datelabel);
      array_push($in_data, $traf['in']);
      array_push($out_data, $traf['out']);
      array_push($tot_data, $traf['total']);
      $average += $data['traf_total'];
    }
    $ave_count                = count($tot_data);
  }

  $decimal    = 0;
  $average    = $average / $ave_count;
  for ($x=0;$x<=count($tot_data);$x++)
  {
    array_push($ave_data, $average);
  }
  $graph_name        = date('M j g:ia', $start)." - ".date('M j g:ia', $end);
}

// Create the graph. These two calls are always required
$graph = new Graph($xsize, $ysize, $graph_name);
$graph->img->SetImgFormat("png");

#$graph->SetScale("textlin",0,0,$start,$end);

$graph->SetScale("textlin");
#$graph->title->Set("$graph_name");
$graph->title->SetFont(FF_FONT2, FS_BOLD, 10);
$graph->SetMarginColor("white");
$graph->SetFrame(false);
$graph->SetMargin("75", "30", "30", "65");
$graph->legend->SetFont(FF_FONT1, FS_NORMAL);
$graph->legend->SetLayout(LEGEND_HOR);
$graph->legend->Pos("0.52", "0.91", "center");

$graph->xaxis->SetFont(FF_FONT1, FS_BOLD);
$graph->xaxis->SetPos('min');
$graph->xaxis->SetTitleMargin(30);
$graph->xaxis->SetTickLabels($ticklabels);
$graph->xgrid->Show(true,true);
$graph->xgrid->SetColor('#e0e0e0','#efefef');

$graph->yaxis->SetFont(FF_FONT1);
$graph->yaxis->SetTitleMargin(50);
$graph->yaxis->title->SetFont(FF_FONT1, FS_NORMAL, 10);
$graph->yaxis->title->Set("Bytes Transferred");
$graph->yaxis->SetLabelFormatCallback('format_bytes_billing');
$graph->ygrid->SetFill(true,'#EFEFEF@0.5','#FFFFFF@0.5');

// Create the bar plots
$barplot_tot = new BarPlot($tot_data);
$barplot_tot->SetLegend("Traffic total");
$barplot_tot->SetColor('darkgray');
$barplot_tot->SetFillColor('lightgray@0.4');
$barplot_tot->value->Show();
$barplot_tot->value->SetFormatCallback('format_bytes_billing_short');

$barplot_in = new BarPlot($in_data);
$barplot_in->SetLegend("Traffic In");
$barplot_in->SetColor('darkgreen');
$barplot_in->SetFillColor('lightgreen@0.4');
$barplot_in->SetWeight(1);

$barplot_out = new BarPlot($out_data);
$barplot_out->SetLegend("Traffic Out");
$barplot_out->SetColor('darkblue');
$barplot_out->SetFillColor('lightblue@0.4');
$barplot_out->SetWeight(1);

if ($imgtype == "historical")
{
  $barplot_over = new BarPlot($overuse_data);
  $barplot_over->SetLegend("Traffic Overusage");
  $barplot_over->SetColor('darkred');
  $barplot_over->SetFillColor('lightred@0.4');
  $barplot_over->SetWeight(1);

  $lineplot_allow = new LinePlot($allow_data);
  $lineplot_allow->SetLegend("Traffic Allowed");
  $lineplot_allow->SetColor('black');
  $lineplot_allow->SetWeight(1);

  $gbplot = new GroupBarPlot(array($barplot_in, $barplot_tot, $barplot_out, $barplot_over));
} else {
  $lineplot_allow = new LinePlot($ave_data);
  //$lineplot_allow->SetLegend("Average per ".$imgtype);
  $lineplot_allow->SetLegend("Average");
  $lineplot_allow->SetColor('black');
  $lineplot_allow->SetWeight(1);

  $gbplot = new GroupBarPlot(array($barplot_in, $barplot_tot, $barplot_out));
}

$graph->Add($gbplot);
$graph->Add($lineplot_allow);

// Display the graph
$graph->Stroke();

?>
