<?php
$CHECKSTART = microtime(true);
include_once("includes/functions.php");

if ($_REQUEST['reload']){
	css_recache($GLOBAL['css_cache']);
}

$v = sql(intval($_REQUEST['v']));

if ($v <= $GLOBAL['css_cache']){
	$ie = 0;
	if (strpos($_SERVER['HTTP_USER_AGENT'],"MSIE 6") !== false){ $ie = 6; }
	if (strpos($_SERVER['HTTP_USER_AGENT'],"MSIE 7") !== false){ $ie = 7; }
	if (strpos($_SERVER['HTTP_USER_AGENT'],"MSIE 8") !== false){ $ie = 8; }
	if (strpos($_SERVER['HTTP_USER_AGENT'],"MSIE 9") !== false){ $ie = 9; }
	if ($ie){
		$fname = "cache/css_" . $CHANNEL . "_" . $v . "_" . $ie . ".css";
	}else{
		$fname = "cache/css_" . $CHANNEL . "_" . $v . ".css";
	}
	if(!file_exists($fname)){
		//needs to be recached
		css_recache($v,$ie);
	}
	header("Content-Type: text/css");
	header('Expires: ' . gmdate('D, d M Y H:i:s', time()+2592000) . ' GMT',true); //cache for a month
	header("Pragma: public",true);
	header("Cache-Control: must-revalidate, post-check=0, pre-check=0",true);
	print file_get_contents($fname);
	exit;
}else{
	$CAT_ID = $CATROOT;
	$META_TITLE = 'Page Not Found' . $PAGE_SUFFIX;
	header("HTTP/1.0 404 Not Found");
	include_once($GLOBAL_PATH . "404.php");
	exit;
}

function css_recache($v, $ie = 0){
global $CHECKSTART, $SITE, $CHANNEL;
	$home_url = "https://" . $SITE . "/?cache_css=true&version_ts=" . $CHECKSTART;
	$html = file_get_contents($home_url);
	preg_match_all("[\<!--#CACHE_CSS_START#-->([A-Za-z0-9_ :/.<>\-!\t\n\r\"=\[\]]*)?<!--#CACHE_CSS_END#-->]", $html, $reg, PREG_PATTERN_ORDER);
	$ignore = false;
	$css = array();
	$css_code = "";
	if (is_array($reg)){
		foreach($reg[0] as $match_id => $match){
			$css_lines = explode("\n",$match);
			foreach($css_lines as $css_line){
				if ((!$ignore) and (strpos($css_line,'href')!== false)){
					$url_start = strpos($css_line,"href=\"") + 6;
					$url_end = strpos($css_line,'"',$url_start);
					$url = substr($css_line,$url_start,$url_end - $url_start);
					if ($url){
						$css_url = "https://" . $SITE . $url;
						$css[] = $css_url;
					}
				}
				if ($css_line == "<![endif]-->"){
					$ignore = false;
				}
				if (($css_line == "<!--[if IE 6]>") and ($ie != 6)){
					$ignore = true;
				}
				if (($css_line == "<!--[if IE 7]>") and ($ie != 7)){
					$ignore = true;
				}
				if (($css_line == "<!--[if IE 8]>") and ($ie != 8)){
					$ignore = true;
				}
				if (($css_line == "<!--[if IE 9]>") and ($ie != 9)){
					$ignore = true;
				}
			}
		}
	}
	foreach($css as $inc){
		$css_code .= minify_css(file_get_contents($inc));
	}
	if ($ie){
		$fname = "cache/css_" . $CHANNEL . "_" . $v . "_" . $ie . ".css";
	}else{
		$fname = "cache/css_" . $CHANNEL . "_" . $v . ".css";
	}
	chmod("cache", 0777);
	file_put_contents($fname,$css_code);
}

function minify_css($css){
	$css = preg_replace('#\s+#', ' ', $css);
	$css = preg_replace('#/\*.*?\*/#s', '', $css);
	$css = str_replace('; ', ';', $css);
	$css = str_replace(': ', ':', $css);
	$css = str_replace(' {', '{', $css);
	$css = str_replace('{ ', '{', $css);
	$css = str_replace(', ', ',', $css);
	$css = str_replace('} ', '}', $css);
	$css = str_replace(';}', '}', $css);
	return trim($css);
}
?>