<?php

namespace Milk\Utils;



use \F3,

	StdClass;



class Config {



	static public $config;

	static public $mode_config;

	static private $file;

	static private $mode;

	static private $type;

	

	const PRODUCTION = 0;

	const STAGE = 1;

	const DEBUG = 2;

	

	static public function load($file, $mode=self::PRODUCTION) {

		if (!is_readable($file))

			return trigger_error("Config file is missing or can't be read");



		if ($mode > 0)

			F3::clear('MILK.CONFIG');

		

		if (F3::cached('MILK.CONFIG')) {

			$confobj = F3::get('MILK.CONFIG');

		} else {

			self::$type = substr($file, strrpos($file, '.')+1);

			

			switch (self::$type) {

				case 'json':

					$data = file_get_contents($file);

					$confobj = json_decode($data);

				break;

				

				case 'yaml':

					$confobj = (object)yaml_parse_file($file);

				break;

				

				default: 

					return trigger_error("Unknown config file type");

			}

			

			if ($mode > 0)

				F3::set('MILK.CONFIG', $confobj, TRUE);

		}

		

		switch ($mode) {

			case self::PRODUCTION:

				$conf = self::array2object($confobj->production);

			break;

			

			case self::STAGE:

				$conf = self::array2object(array_merge((array)$confobj->production, (array)$confobj->stage));

			break;

			

			case self::DEBUG:

				$conf = self::array2object(array_merge((array)$confobj->production, (array)$confobj->stage, (array)$confobj->debug));

			break;

		}



		self::$file = $file;

		self::$mode = $mode;

		self::$config = $confobj;

		self::$mode_config = $conf;

	}

	

	public static function save($type='') {

		if (empty($type))

			$type = self::$type;

		switch ($type) {

			case 'json':

				$json = json_encode(self::$config);

				file_put_contents(APP_PATH.'/config.json', $json);

			break;

			

			case 'yaml':

				$yaml = yaml_emit(self::object2array(self::$config));

				file_put_contents(APP_PATH.'/config.yaml', $yaml);

			break;

			

			default: 

				return trigger_error("Unknown config file type");

		}

		return true;

	}

	

	static public function object2array($data){

		if(!is_object($data) && !is_array($data)) return $data;

		if(is_object($data)) $data = get_object_vars($data);

		return array_map('Milk\Utils\Config::object2array', $data);

	}

	

	static public function array2object($data){

		if(!is_array($data)) return $data;

		$object = new StdClass();

		if (is_array($data) && count($data) > 0) {

			foreach ($data as $name=>$value) {

				$name = strtolower(trim($name));

				if (!empty($name)) {

					$object->$name = self::array2object($value);

				}

			}

		}

		return $object;

	}

	

	static public function get($var) {

		return eval("return self::\$mode_config->$var;");

	}

}