--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/htdocs/graph.php	Sun Dec 14 00:35:52 2008 -0500
@@ -0,0 +1,102 @@
+<?php
+require('../stats-fe.php');
+require('../graphs.php');
+require('../timezone.php');
+
+$channel_list = stats_channel_list();
+$first_channel = $channel_list[0];
+$channel = ( isset($_REQUEST['channel']) && in_array($_REQUEST['channel'], $channel_list) ) ? $_REQUEST['channel'] : $first_channel;
+
+$g = new GraphMaker(); // _Compat();
+
+$g->SetGraphPadding(20, 30, 20, 15);
+$g->SetGraphAreaHeight(200);
+$g->SetBarDimensions(26, 0);
+$g->SetBarPadding(7);
+$g->SetGraphBackgroundTransparent(240, 250, 255, 0);
+$g->SetGraphTransparency(25);
+
+// generate the data
+// we're doing this by absolute hours, not by strictly "24 hours ago", e.g. on-the-hour stats
+$mode = ( isset($_GET['mode']) ) ? $_GET['mode'] : 'lastday';
+switch ( $mode )
+{
+  case 'lastday':
+  default:
+    $graph_title = $channel . ' message count - last 24 hours';
+    $this_hour = gmmktime(gmdate('H'), 0, 0);
+    $graphdata = array();
+    
+    for ( $i = 23; $i >= 0; $i-- )
+    {
+      $basetime = $this_hour - ( $i * 3600 );
+      $ts = date('H:i', $basetime);
+      $basetime += 3600;
+      $graphdata[$ts] = stats_message_count($channel, 60, $basetime);
+    }
+    break;
+  case 'lastweek':
+    $graph_title = $channel . ' activity - last 14 days';
+    $this_day = gmmktime(0, 0, 0);
+    $graphdata = array();
+    
+    for ( $i = 13; $i >= 0; $i-- )
+    {
+      $basetime = $this_day - ( $i * 86400 );
+      $ts = date('D n/j', $basetime);
+      $basetime += 86400;
+      $graphdata[$ts] = stats_message_count($channel, 1440, $basetime);
+    }
+    $g->SetBarPadding(12);
+    break;
+  case 'lastmonth':
+    $graph_title = $channel . ' activity - last 30 days';
+    $this_day = gmmktime(0, 0, 0);
+    $graphdata = array();
+    
+    for ( $i = 29; $i >= 0; $i-- )
+    {
+      $basetime = $this_day - ( $i * 86400 );
+      $ts = date('Y-m-d', $basetime);
+      $basetime += 86400;
+      $graphdata[$ts] = stats_message_count($channel, 1440, $basetime);
+    }
+    $g->SetBarPadding(15);
+    break;
+}
+
+$max = max($graphdata);
+
+// Determine axis interval
+$interval = 2;
+if ( $max > 20 )
+  $interval = 4;
+if ( $max > 25 )
+  $interval = 5;
+if ( $max > 50 )
+  $interval = 10;
+if ( $max > 200 )
+  $interval = 40;
+if ( $max > 500 )
+  $interval = 80;
+if ( $max > 1000 )
+  $interval = 100;
+if ( $max > 2000 )
+  $interval = 200;
+if ( $max > 3200 )
+  $interval = 300;
+if ( $max > 4000 )
+  $interval = 500;
+if ( $max > 5000 )
+  $interval = 1000;
+if ( $max > 15000 )
+  $interval = 1500;
+if ( $max > 30000 )
+  $interval = round($max / 10);
+
+$g->SetBarData($graphdata);
+$g->SetAxisStep($interval);
+$g->SetGraphTitle($graph_title);
+
+$g->DrawGraph();
+