<?php
  /**
   * Copyright (c) 2013 Bart Visscher <bartv@thisnet.nl>
   * This file is licensed under the Affero General Public License version 3 or
   * later.
   * See the COPYING-README file.
   */
  
  namespace OC\Log;
  
  use OC\Log as LoggerInterface;
  
  class ErrorHandler {
  	/** @var LoggerInterface */
  	private static $logger;

  	/**

  	 * remove password in URLs

  	 * @param string $msg
  	 * @return string
  	 */
  	protected static function removePassword($msg) {
  		return preg_replace('/\/\/(.*):(.*)@/', '//xxx:xxx@', $msg);
  	}
  
  	public static function register($debug=false) {

  		$handler = new ErrorHandler();

  		if ($debug) {
  			set_error_handler(array($handler, 'onAll'), E_ALL);
  		} else {
  			set_error_handler(array($handler, 'onError'));
  		}

  		register_shutdown_function(array($handler, 'onShutdown'));
  		set_exception_handler(array($handler, 'onException'));
  	}
  
  	public static function setLogger(LoggerInterface $logger) {
  		self::$logger = $logger;
  	}
  
  	//Fatal errors handler
  	public static function onShutdown() {
  		$error = error_get_last();
  		if($error && self::$logger) {
  			//ob_end_clean();
  			$msg = $error['message'] . ' at ' . $error['file'] . '#' . $error['line'];

  			self::$logger->critical(self::removePassword($msg), array('app' => 'PHP'));

  		}
  	}
  
  	// Uncaught exception handler
  	public static function onException($exception) {
  		$msg = $exception->getMessage() . ' at ' . $exception->getFile() . '#' . $exception->getLine();

  		self::$logger->critical(self::removePassword($msg), array('app' => 'PHP'));

  	}
  
  	//Recoverable errors handler
  	public static function onError($number, $message, $file, $line) {
  		if (error_reporting() === 0) {
  			return;
  		}
  		$msg = $message . ' at ' . $file . '#' . $line;

  		self::$logger->error(self::removePassword($msg), array('app' => 'PHP'));
  
  	}
  
  	//Recoverable handler which catch all errors, warnings and notices
  	public static function onAll($number, $message, $file, $line) {
  		$msg = $message . ' at ' . $file . '#' . $line;
  		self::$logger->debug(self::removePassword($msg), array('app' => 'PHP'));

  
  	}

  }