<?php
/**
 * Mikio CSS/LESS Engine
 *
 * @link  http://dokuwiki.org/template:mikio
 * @author  James Collins <james.collins@outlook.com.au>
 * @license GPLv2 (http://www.gnu.org/licenses/gpl-2.0.html)
 */

require(dirname(__FILE__) . '/inc/polyfill-ctype.php');

if(!function_exists('getallheaders')) {
  function getallheaders() {
    $headers = [];
    foreach($_SERVER as $name => $value) {
      if(substr($name, 0, 5) == 'HTTP_') {
        $headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
      }
    }
    return $headers;
  }
}

if(!function_exists('platformSlashes')) {
	function platformSlashes($path) {
		return str_replace('/', DIRECTORY_SEPARATOR, $path);
	}
}

try {
  $lesscLib = platformSlashes('../../../vendor/marcusschwarz/lesserphp/lessc.inc.php');
  if(!file_exists($lesscLib))
    $lesscLib = platformSlashes($_SERVER['DOCUMENT_ROOT'] . '/vendor/marcusschwarz/lesserphp/lessc.inc.php');
  if(!file_exists($lesscLib))
    $lesscLib = platformSlashes('../../../../../app/dokuwiki/vendor/marcusschwarz/lesserphp/lessc.inc.php');
  if(!file_exists($lesscLib))
    $lesscLib = platformSlashes($_SERVER['DOCUMENT_ROOT'] . '/app/dokuwiki/vendor/marcusschwarz/lesserphp/lessc.inc.php');

  if(file_exists($lesscLib)) {
    @require_once($lesscLib);

    if(isset($_GET['css'])) {
      $failed = false;
      $cssFileList = platformSlashes(explode(',', $_GET['css']));
      $baseDir = platformSlashes(dirname(__FILE__) . '/');
      $css = '';
      
      foreach($cssFileList as $cssFileItem) {
        $cssFile = platformSlashes(realpath($baseDir . $cssFileItem));

        if(strpos($cssFile, $baseDir) === 0 && file_exists($cssFile)) {
          $css .= file_get_contents($cssFile);
        } else {
          $failed = true;
        }
      }

      if(!$failed) {
        $rawVars = Array();

        header('Content-Type: text/css; charset=utf-8');

        $less = new lessc();
        $less->setPreserveComments(false);
        
        $vars = Array();
        if(isset($rawVars['replacements'])) {
          foreach($rawVars['replacements'] as $key=>$val) {
            if(substr($key, 0, 2) == '__' && substr($key, -2) == '__') {
              $vars['ini_' . substr($key, 2, -2)] = $val;
            }
          }
        }

        if(count($vars) > 0) {
          $less->setVariables($vars);
        }
        
        $css = $less->compile($css);
        echo $css;
      } else {
        header('HTTP/1.1 404 Not Found'); 
        echo "The requested file could not be found";
      }
    } else {
      header('HTTP/1.1 404 Not Found'); 
      echo "The requested file could not be found";        
    }
  } else {
    throw new Exception('MikioPlugin could not find the LESSC engine in DokuWiki');
  }
}
catch(Exception $e) {
  header('Content-Type: text/css; charset=utf-8');
  include(dirname(__FILE__) . '/assets/mikioplugin.css');
}