<?php defined('BASEPATH') || exit("No direct script access allowed");

/**
 * Extends CI's language class.
 *
 * @author Eike Foken <kontakt@eikefoken.de>
 */
class MY_Lang extends CI_Lang {

	var $_gettext_language;
	var $_gettext_domain;
	var $_gettext_path;

	/**
	 * Calls the parent constructor.
	 */
	public function __construct() {
		parent::__construct();
		$this->_gettext_domain = 'lang';
		log_message('debug', "Gettext Class Initialized");

		$this->load_gettext();
	}

	/**
	 * This method overides the original load method. It's duty is loading the
	 * domain files by config or by default internal settings.
	 *
	 * @param string $user_lang
	 */
	public function load_gettext($user_lang = false) {
		if ($user_lang) {
			$this->_gettext_language = $user_lang;
		} else {
			$this->_gettext_language = 'en_EN';
		}
		log_message('debug', 'The gettext language was set by parameter: ' . $this->_gettext_language);

		putenv("LANG=$this->_gettext_language");
		setlocale(LC_ALL, $this->_gettext_language);

		// set the path of .po files
		$this->_gettext_path = APPPATH . 'language/locale';
		log_message('debug', 'Gettext Class path chosen is: ' . $this->_gettext_path);

		bindtextdomain($this->_gettext_domain, $this->_gettext_path);
		textdomain($this->_gettext_domain);
		log_message('debug', 'The gettext domain chosen is: '. $this->_gettext_domain);

		return  true;
	}

	/**
	 * Loads a language file.
	 *
	 * @see CI_Lang::load()
	 */
	public function load($langfile = '', $idiom = '', $return = false, $add_suffix = true, $alt_path = '') {
		$langfile = str_replace(EXT, '', $langfile);

		if ($add_suffix == true) {
			$langfile = str_replace('_lang.', '', $langfile) . '_lang';
		}

		$langfile .= EXT;

		if (in_array($langfile, $this->is_loaded, true)) {
			return;
		}

		$config =& get_config();

		if ($idiom == '') {
			$defaultLang = !isset($config['language']) ? 'english' : $config['language'];
			$idiom = ($defaultLang == '') ? 'english' : $defaultLang;
		}

		// determine where the language file is and load it
		if ($alt_path != '' && file_exists($alt_path . 'language/' . $idiom . '/' . $langfile)) {
			include($alt_path . 'language/' . $idiom . '/' . $langfile);
		} else {
			$found = false;

			foreach (get_instance()->load->get_package_paths(true) as $packagePath) {
				if (file_exists($packagePath . 'language/' . $idiom . '/' . $langfile)) {
					include($packagePath . 'language/' . $idiom . '/' . $langfile);
					$found = true;
					break;
				} else if (file_exists($packagePath . 'language/english/' . $langfile)) {
					// load the english language file if the other file does exists
					include($packagePath . 'language/english/' . $langfile);
					$found = true;
					break;
				}
			}

			if ($found !== true) {
				show_error('Unable to load the requested language file: language/' . $idiom . '/' . $langfile);
			}
		}

		if (!isset($lang)) {
			log_message('error', 'Language file contains no data: language/' . $idiom . '/' . $langfile);
			return;
		}

		if ($return == true) {
			return $lang;
		}

		$this->is_loaded[] = $langfile;
		$this->language = array_merge($this->language, $lang);
		unset($lang);

		log_message('debug', 'Language file loaded: language/' . $idiom . '/' . $langfile);
		return true;
	}
}