<?php
if ( !defined( 'ABSPATH' ) ) exit;


/**
 * Load array of stored in options language properties
 * @since 3.3
 */
function qtranxf_load_languages(&$cfg)
{
	global $qtranslate_options;
	//$cfg = array();
	foreach($qtranslate_options['languages'] as $nm => $opn){
		$cfg[$nm] = get_option($opn,array());
	}
	return $cfg;
}

//function qtranxf_save_languages($cfg) is in qtx_activation_hook.php as it is in use there

/**
 * Remove language $lang properties from hash $langs.
 * @since 3.3
 */
function qtranxf_unsetLanguage(&$langs, $lang) {
	unset($langs['language_name'][$lang]);
	unset($langs['flag'][$lang]);
	unset($langs['locale'][$lang]);
	unset($langs['locale_html'][$lang]);
	unset($langs['date_format'][$lang]);
	unset($langs['time_format'][$lang]);
	unset($langs['not_available'][$lang]);
	//unset($langs['languages'][$lang]);
}

/** 
 * @since 3.4.2
 */
function qtranxf_setLanguageAdmin($lang){
	global $q_config;
	$q_config['language'] = $lang;
	qtranxf_set_language_cookie($lang);
}

/**
 * Remove language $lang properties from hash $langs.
 * @since 3.3
 */
function qtranxf_copyLanguage(&$langs, $cfg, $lang) {
	$langs['language_name'][$lang] = $cfg['language_name'][$lang];
	$langs['flag'][$lang] = $cfg['flag'][$lang];
	$langs['locale'][$lang] = $cfg['locale'][$lang];
	if(empty($cfg['locale_html'][$lang])) unset($langs['locale_html'][$lang]);
	else $langs['locale_html'][$lang] = $cfg['locale_html'][$lang];
	$langs['date_format'][$lang] = $cfg['date_format'][$lang];
	$langs['time_format'][$lang] = $cfg['time_format'][$lang];
	$langs['not_available'][$lang] = $cfg['not_available'][$lang];
	//$langs['languages'][$lang] = $cfg['languages'][$lang];
}

function qtranxf_update_config_header_css() {
	global $q_config;
	$header_css = get_option('qtranslate_header_css');
	if($header_css === false){
		$q_config['header_css'] = qtranxf_front_header_css_default();
	}
	if(!$q_config['header_css_on'] || !empty($header_css)){
		qtranxf_add_warning(sprintf(__('A manual update to option "%s" or to the theme custom CSS may be needed, after some languages are changed.', 'qtranslate'), __('Head inline CSS', 'qtranslate')).' '.__('If you do not wish to customize this option, then reset it to the default by emptying its value.', 'qtranslate'));
	}
}

function qtranxf_disableLanguage($lang) {
	global $q_config;
	if(!qtranxf_isEnabled($lang))
		return false;
	$new_enabled = array();
	foreach($q_config['enabled_languages'] as $k => $l){
		if($l != $lang) continue;
		unset($q_config['enabled_languages'][$k]);
		break;
	}
	qtranxf_unsetLanguage($q_config,$lang);
	if($q_config['language'] == $lang){
		qtranxf_setLanguageAdmin($q_config['default_language']);
	}
	qtranxf_update_config_header_css();
	return true;
}

function qtranxf_enableLanguage($lang) {
	global $q_config;
	if(qtranxf_isEnabled($lang))// || !isset($q_config['language_name'][$lang]))
		return false;
	$q_config['enabled_languages'][] = $lang;

	// force update of .mo files
	if ($q_config['auto_update_mo']) qtranxf_updateGettextDatabases(true, $lang);

	qtranxf_load_languages_enabled();
	qtranxf_update_config_header_css();
	return true;
}

/**
 * Remove language $lang from the database.
 * @since 3.3
 */
function qtranxf_deleteLanguage($lang) {
	global $q_config;
	if( !qtranxf_language_predefined($lang) ){
		if( $q_config['default_language'] == $lang ){
			//if(!isset($q_config['language_name'][$lang])||strtolower($lang)=='code') $error = __('No such language!', 'qtranslate');
			return __('Cannot delete Default Language!', 'qtranslate');
		}
		qtranxf_disableLanguage($lang);
	}
	$langs=array(); qtranxf_load_languages($langs);
	qtranxf_unsetLanguage($langs,$lang);
	qtranxf_save_languages($langs);
	if($q_config['language'] == $lang){
		qtranxf_setLanguageAdmin($q_config['default_language']);
	}
	return '';
}