function do_editstat($formatter, $params = array())
{
global $Config;
$opts = array();
$opts['.oldest'] = !empty($Config['editstat_datetime_oldest']) ? $Config['editstat_datetime_oldest'] : '-1 year';
if (!empty($params['days'])) {
$days = intval($params['days']);
} else {
$days = 50;
}
// default 50 days
if ($days > 200) {
$days = 200;
}
$opts['.max_range'] = $days . ' day';
// image height
if (!empty($params['h'])) {
$height = intval($params['h']);
} else {
$height = 30;
}
// default image height
if ($height > 200) {
$height = 200;
}
// check request paramters
if (isset($params['type']) && $params['type'] == 'user') {
$type = 'user_count';
} else {
$type = 'data';
}
// round timestamp
$tmp = time();
$tmp = date('Y-m-d 00:00:00', $tmp);
$time = strtotime($tmp);
// setup headers
$lastmod = substr(gmdate('r', $time), 0, -5) . 'GMT';
$tag = $type . ',' . $time . ',' . $days . ',' . $height;
$etag = md5($tag);
$need = http_need_cond_request($time, $lastmod, $etag);
if (!$need) {
header('HTTP/1.0 304 Not Modified');
@ob_end_clean();
return;
}
// get editlogbin
$data = cached_editlogbin($formatter, $opts);
// check max
$j = 0;
$max = 0;
foreach ($data[$type] as $idx => $c) {
if ($c > $max) {
$max = $c;
}
if (++$j > 30) {
break;
}
}
// graph parameters
$wpen = 3;
// pen width
$gap = 1;
// margin
// $days + today
$width = ($days + 1) * ($wpen + $gap) + $gap;
$nolab = false;
// make transparent image
$canvas = imagecreatetruecolor($width, $height + ($nolab ? 0 : 8) + $gap * 2);
imagealphablending($canvas, false);
$bg = imagecolorallocatealpha($canvas, 255, 255, 255, 127);
imagefill($canvas, 0, 0, $bg);
imagesavealpha($canvas, true);
$pens = array();
$r = 128;
$g = 128;
$b = 128;
$pens[0] = imagecolorallocate($canvas, $r, $g, $b);
$r = 185;
$g = 180;
$b = 184;
$pens[1] = imagecolorallocate($canvas, $r, $g, $b);
if (!$nolab) {
$lab = $type[0] == 'u' ? 'Edit users' : 'Editstat';
imagestring($canvas, 1, 2, $height + 1, $lab . ' ' . date('Y-m-d H:i'), $pens[0]);
}
$x = $gap;
$tmp = strtotime('-' . $days . ' days');
// week
$time = strtotime(date('Y-m-d 00:00:00', $tmp));
$n = date('w', $time) - 1;
$pen = 0;
foreach ($data[$type] as $idx => $c) {
$h = (int) ($c / $max * $height + 0.5);
if ($n >= 7) {
// change pen color for each weeks
$pen++;
$pen = $pen % 2;
$n = 0;
}
imagefilledrectangle($canvas, $x, $height, $x + $wpen - 1, $height - $h, $pens[$pen]);
$x += $wpen + $gap;
$n++;
}
// setup expires
$time = strtotime('+1 day');
$tmp = strtotime(date('Y-m-d 00:00:00', $time));
$expires = gmdate("D, d M Y H:i:s", $tmp) . ' GMT';
header('Content-Type: image/png');
$maxage = 60 * 60 * 24;
header('Cache-Control: public, s-maxage=' . $maxage . ', max-age=' . $maxage);
header('Last-Modified: ' . $lastmod);
header('Expires: ' . $expires);
header('ETag:"' . $etag . '"');
imagepng($canvas);
imagedestroy($canvas);
}
function do_editlogbin($formatter, $params = array())
{
global $Config;
$params['.oldest'] = !empty($Config['editlogbin_datetime_oldest']) ? $Config['editlogbin_datetime_oldest'] : '-1 year';
$params['.max_range'] = !empty($Config['editlogbin_datetime_max_range']) ? $Config['editlogbin_datetime_max_range'] : '1 year';
$data = cached_editlogbin($formatter, $params);
header('Content-Type: text/plain');
if ($params['user_count']) {
echo json_encode($data['user_count']);
} else {
echo json_encode($data['data']);
}
return;
}
