<?php



/**

 * @package 	Aspen_Framework

 * @subpackage 	System

 * @author 		Michael Botsko

 * @copyright 	2009 Trellis Development, LLC

 * @since 		1.0

 */





/**

 * Provides a method of writing to a log file.

 * @package Aspen_Framework

 */

class Log  {



	/**

	 * @var boolean $on Whether or not logging  is enabled

	 * @access private

	 */

	private $on = false;



	/**

	 * @var boolean $dir The directory path to our log files

	 * @access private

	 */

	private $dir = false;



	/**

	 * @var boolean $full_path Contains the full path to our current log file

	 * @access private

	 */

	private $full_path = false;





	/**

	 * Sets up the directories and files as necessary

	 * @access public

	 */

	public function enable(){



		$loaded = false;



		$this->on 		= config()->get('enable_logging');

		$this->dir 		= config()->get('log_dir');

		$this->level 	= config()->get('log_verbosity');



		if($this->on && $this->dir){



			// verify directory exists and is writeable

			if(!$this->checkDirectory()){

				$this->on = false;

				error()->raise(1,

					'Logging is enabled, but directory is not writeable. Dir: ' . $this->dir, __FILE__, __LINE__);

			}



			// create a log file

			if(!$this->createLogFile()){

				$this->on = false;

				error()->raise(1,

					'Failed creating new log file.', __FILE__, __LINE__);

			}



			if($this->on){

				$loaded = true;

			}

		}





		if($loaded){



			$this->write('Logging has been activated at ' . Date::formatMicrotime(Date::microtime(EXECUTION_START)) . '.', 'w');



			if($this->level == 1){

				$this->logCoreInfo();

			}

		}

	}





	/**

	 * Checks for a valid directory, attempts to create

	 * @return boolean

	 * @access private

	 */

	private function checkDirectory(){



		$dir_ok = false;



		if($this->dir){

			if(is_dir($this->dir) && is_writeable($this->dir)){

				$dir_ok = true;

			} else {

				$dir_ok = mkdir($this->dir);

			}

		}



		return $dir_ok;



	}





	/**

	 * Uses or creates new log files

	 * @return boolean

	 * @access private

	 */

	private function createLogFile(){



		$new_filename = 'log';



		if(config()->get('timestamp_log_file')){

			$new_filename .= '-' . Date::formatMicrotime(Date::microtime(EXECUTION_START));

		}



		$this->full_path = $this->dir . DS . $new_filename;



		if(!$fileexists = file_exists($this->full_path)){

			$fileexists = touch($this->full_path);

		}



		return $fileexists;



	}





	/**

	 * Writes a new message to the log file

	 * @param string $message

	 * @access public

	 */

	public function write($message = '(empty message)', $mode = 'a'){

		if($this->on){

			files()->useFile($this->full_path);



			if(is_array($message) || is_object($message)){

				files()->write( print_r($message, true) . "\n", $mode);

			} else {

				files()->write( preg_replace('/[\t]+/', '', trim($message)) . "\n", $mode);

			}

		}

	}





	/**

	 * Writes a breaking line

	 * @access public

	 */

	public function hr(){

		$this->write('++======================================================++');

	}



	/**

	 * Writes a new section header

	 * @access public

	 */

	public function section($title = 'Section'){

		$this->write('');

		$this->write('++======================================================++');

		$this->write('++  ' . $title);

		$this->write('++======================================================++');

	}





	/**

	 * Sets the proper print string for a var

	 * @param mixed $value

	 * @return string

	 * @access private

	 */

	private function logValue($value){

		if(is_array($value) || is_object($value)){

			return serialize($value);

		}

		return $value;

	}





	/**

	 * Logs all core aspen framework data to the logfile

	 * @access private

	 */

	private function logCoreInfo(){

		if($this->on){



			// record all constants

			$this->section('Constants');

			$defines = get_defined_constants(true);

			foreach($defines['user'] as $define => $value){

				$this->write('Constant ' . $define . ' was set to a value of: ' . $this->logValue($value));

			}



			// record all configurations

			$this->section('Configurations');

			$config = app()->getConfig()->_getConfigArray();

			foreach($config as $config => $value){

				$this->write('Config ' . $config . ' was set to a value of: ' . $this->logValue($value));

			}



			$this->section('Loaded System Libraries');

			$lib = app()->getLoadedLibraries();

			foreach($lib as $class){

				$this->write('Library Class ' . $class['classname'] . ' was loaded.');

			}



			$this->section('Session Data');

			$session = app()->params->getRawSource('session');

			$this->write('Session_id: ' . session_id());

			foreach($session as $key => $value){

				$this->write('$_SESSION[\''.$key.'\'] = ' . $this->logValue($value));

			}



			$this->section('POST Data');

			$post = app()->params->getRawSource('post');

			foreach($post as $key => $value){

				$this->write('$_POST[\''.$key.'\'] = ' . $this->logValue($value));

			}



			$this->section('GET Data');

			$get = app()->params->getRawSource('get');

			foreach($get as $key => $value){

				$this->write('$_GET[\''.$key.'\'] = ' . $this->logValue($value));

			}



			$this->section('SERVER Data');

			$server = app()->params->getRawSource('server');

			foreach($server as $key => $value){

				$this->write('$_SERVER[\''.$key.'\'] = ' . $this->logValue($value));

			}



			$this->section('FILES Data');

			$server = app()->params->getRawSource('files');

			foreach($server as $key => $value){

				$this->write('$_FILES[\''.$key.'\'] = ' . $this->logValue($value));

			}



			// save all urls/paths to log for debugging

			$this->section('Router Urls & Paths');

			$this->write('Router::domainUrl set to: ' . router()->domainUrl());

			$this->write('Router::appUrl set to: ' . router()->appUrl());

			$this->write('Router::getPath set to: ' . router()->getPath());

			$this->write('Router::interfaceUrl set to: ' . router()->interfaceUrl());

			//$this->write('Router::moduleUrl set to: ' . router()->moduleUrl());

			$this->write('Router::staticUrl set to: ' . router()->staticUrl());

			$this->write('Router::fullUrl set to: ' . router()->fullUrl());



			$this->section('Bootstrap');

			$this->write('Installed checks returned ' . (app()->isInstalled() ? 'true' : 'false'));



			if(ConfigLoader::checkUserConfigExists()){

				$this->write('Found user config file.');

			} else {

				$this->write('User config was NOT FOUND.');

			}

		}

	}

}

?>