<?php

// if the site is down for maintenacne we still want to show js as the admin will still use it
// so ignore the down for maintenanace message for this page load
define('IGNORE_MAINTENANCE', true);
define('IGNORE_INSTALL', true);
define('IN_CONTROL_PANEL', true);

require_once(dirname(__FILE__) . '/api/iwp.php');

header('Content-Type: text/css');

$iwp = IWP::Init('basic,outputbuffer,language,whitelabel,functions', true);

function SendCacheHeaders($LastModifiedDate) {

	if ($LastModifiedDate) {
		//die('Date: '.$LastModifiedDate);
		header('Expires: '.gmdate("D, d M Y H:i:s \G\M\T",time()+864000));
		if ((isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $LastModifiedDate)) {
			$date = gmdate("D, d M Y H:i:s \G\M\T",$LastModifiedDate);
			header('Last-Modified: '.$date, true, 304);
			exit;
		} else {
			$date = gmdate("D, d M Y H:i:s \G\M\T",$LastModifiedDate);
			header('Last-Modified: '.$date, true, 200);
		}
	}

}

/**
 * This function is used within the module CSS code to reference an image within the module
 * It first checks to see if the currently selected template has the image in particular that it wants to use instead of the module's default.
 * If there is none, it will return the path to the module's default image.
 *
 * @param string $imageName This is the name of the image to perform the check with.
 */
function GetModuleImagePath($imageName){
	$moduleName = iwp_template::getInstance()->Get('currentModule');
	if(file_exists(IWP_BASE_PATH . '/templates/' . iwp_config::Get('template') . '/modules/' . $moduleName . '/images/' . $imageName)){
		return iwp_config::Get('appPath') . 'templates/' . iwp_config::Get('template') . '/modules/' . $moduleName . '/images/' . $imageName;
	}
	return iwp_config::Get('appPath') . 'modules/' . $moduleName . '/images/' . $imageName;
}


/**
 * This function is used within the module CSS code to reference an image within the template from a module or a template's module override style
 * Its useful to force the use of a template image.
 *
 * @param string $imageName This is the name of the image to perform the check with.
 */
function GetTemplateImagePath($imageName){
	$moduleName = iwp_template::getInstance()->Get('currentModule');
	if(file_exists(IWP_BASE_PATH . '/templates/' . iwp_config::Get('template') . '/images/' . $imageName)){
		return iwp_config::Get('appPath') . 'templates/' . iwp_config::Get('template') . '/images/' . $imageName;
	}
	return '';
}

if (iwp_config::Get('AllowTestingCommands') && isset($_GET['tpl'])) {
	//	change the template by name only, do not save the config
	iwp_config::Set('template', $_GET['tpl']);
}

$cacheId = "stylescache";
$cache = new iwp_cache();
$cache->SetDir('modules');
$forceRefresh = false;
$modules = iwp_modules::getInstance();

if(file_exists($cache->GetFullFileName($cacheId))){
	$oldTime = filemtime($cache->GetFullFileName($cacheId));
}else{
	$oldTime = 0;
}

$commonFile = IWP_BASE_PATH . '/styles/common.css';
if (file_exists($commonFile) && @filemtime($commonFile) > $oldTime) {
	$forceRefresh = true;
}

foreach($modules->ModuleList() as $moduleName){
	$tplFile = IWP_BASE_PATH . '/templates/' . iwp_config::Get('template') . '/modules/' . $moduleName . '/templates/styles.css';
	$moduleFile = IWP_MODULES_PATH . '/' . $moduleName . '/templates/styles.css';

	if(file_exists($tplFile)){
		if(filemtime($tplFile) > $oldTime) {
			$forceRefresh = true;
			break;
		}

	}elseif(file_exists($moduleFile)){
		if(filemtime($moduleFile) > $oldTime) {
			$forceRefresh = true;
			break;
		}
	}
}

$lastModified = 0;
if($cache->HasExpired($cacheId) || $forceRefresh){

	$returnCss = '';

	if (file_exists($commonFile) && $thisCss = @file_get_contents($commonFile)) {
		$returnCss .= "\n\n/********* Common CSS *********/\n\n" . $iwp->template->ParseInput($thisCss);
	}

	foreach($modules->ModuleList() as $moduleName){
		$module = $modules->GetModule($moduleName);

		$iwp->template->Assign('currentModule', $moduleName);

		$tplFile = IWP_BASE_PATH . '/templates/' . iwp_config::Get('template') . '/modules/' . $moduleName . '/templates/styles.css';
		$moduleFile = IWP_MODULES_PATH . '/' . $moduleName . '/templates/styles.css';

		if (file_exists($moduleFile)) {
			if ($thisCss = file_get_contents($moduleFile)) {
				$returnCss .= "\n\n/********* Module: ".$moduleName." (base) *********/\n\n" . $iwp->template->ParseInput($thisCss);
			}
		}

		if (file_exists($tplFile)) {
			if ($thisCss = file_get_contents($tplFile)) {
				$returnCss .= "\n\n/********* Module: ".$moduleName." (template: ". iwp_config::Get('template') .") *********/\n\n" . $iwp->template->ParseInput($thisCss);
			}
		}
	}

	$cache->WriteCache($cacheId, $returnCss);
	$lastModified = time();

} else {
	$lastModified = filemtime($cache->GetFullFileName($cacheId));
	$returnCss = $cache->ReadCache($cacheId);
}

SendCacheHeaders($lastModified);

echo $returnCss;