<?php
/* $Id$ */
namespace MCMS;

(defined('MCMS') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

use MCMS\User\iUser;
use \Mammut\Locale\Locale;

/**
 * Request context info class
 * 
 * @author Stefan Daurer <s.daurer@q-spot.org>
 * @package MCMS\System
 */
class Context {
	protected $defaultLocale = 'en';
	protected $localeoverride = false;

	/**
	 * Set the default system locale setting to the context
	 *
	 * @param mixed $locale
	 *        	a locale setting
	 */
	public function setDefaultLocale($locale) {
		$this->defaultLocale = $locale;
	}

	public function getDefaultLocale() {
		return $this->defaultLocale;
	}

	/**
	 * Allows an additional locale with high priority from cookies or request params
	 *
	 * @param mixed $locale
	 *        	a locale setting
	 */
	public function setLocaleOverride($locale) {
		$this->localeoverride = $locale;
	}

	public function getLocaleOverride() {
		return $this->localeoverride;
	}

	/**
	 *
	 * @return \MCMS\User\iUser the current user of the request context
	 */
	public function getCurrentUser() {
		return \MCMS\System::getInstance()->getUserSvc()->getUser();
	}

	/**
	 * Find the best locale setting in $haystack supported in the locale priority list
	 * 
	 * @param array $haystack
	 *        	a set of locales
	 */
	public function findBestLocale(array $haystack) {
		$default = $this->getDefaultLocale();
		$browserlocales = Locale::getLocaleList($_SERVER['HTTP_ACCEPT_LANGUAGE']);
		$user = $this->getCurrentUser();
		
		$locales = array_merge($browserlocales, ['0.0' => $default]);
		if(!empty($user->locale))
			$locales = array_merge(['98.0' => $user->locale], $locales);
		if($this->localeoverride)
			$locales = array_merge(['99.0' => $this->localeoverride], $locales);
		
		$lang = $default;
		foreach($locales as $l) {
			if(in_array($l, $haystack)) {
				$lang = $l;
				break;
			}
		}
		return $lang;
	}
}