<?php

class CTCORE_Wpml
{

    /**
     * true / false if the wpml plugin exists
     */
    public static function is_wpml_exists()
    {
        if (class_exists("SitePress"))
            return (true);
        else
            return (false);
    }

    /**
     * valdiate that wpml exists
     */
    private static function validate_wpml_exists()
    {
        if (! self::is_wpml_exists())
            Essential_Grid_Base::throw_error(__("The wpml plugin don't exists", EG_TEXTDOMAIN));
    }

    /**
     * get current language
     */
    public static function get_current_lang()
    {
        self::validate_wpml_exists();
        $wpml = new SitePress();
        
        if (is_admin())
            $lang = $wpml->get_default_language();
        else
            $lang = self::get_current_lang_code();
        
        return ($lang);
    }

    /**
     * get current language code
     */
    public static function get_current_lang_code()
    {
        $langTag = ICL_LANGUAGE_CODE;
        
        return ($langTag);
    }

    /**
     * disable the language filtering
     */
    public static function disable_language_filtering()
    {
        self::validate_wpml_exists();
        global $sitepress;
        remove_filter('terms_clauses', array(
            $sitepress,
            'terms_clauses'
        ));
    }

    /**
     * enable the language filtering
     */
    public static function enable_language_filtering()
    {
        self::validate_wpml_exists();
        global $sitepress;
        add_filter('terms_clauses', array(
            $sitepress,
            'terms_clauses'
        ));
    }

    /**
     * get default language id of tag / category
     */
    public static function get_id_from_lang_id($id, $type = 'category')
    {
        if (self::is_wpml_exists()) {
            
            $lang = self::get_current_lang_code();
            $real_id = icl_object_id($id, $type, true, $lang);
            
            return $real_id;
        } else {
            
            return $id;
        }
    }

    /**
     * get current language id of tag / category
     */
    public static function get_lang_id_from_id($id, $type = 'category')
    {
        if (self::is_wpml_exists()) {
            
            $real_id = icl_object_id($id, $type, true);
            
            return $real_id;
        } else {
            
            return $id;
        }
    }

    /**
     * change cat / tag ids in String to current language
     */
    public static function change_cat_id_by_lang($catID, $type = 'category')
    {
        if (self::is_wpml_exists()) {
            
            $real_id = icl_object_id($catID, $type, true);
            
            return $real_id;
        } else {
            
            return $catID;
        }
    }
}