<?php

class WCML_Variation_Swatches_and_Photos{

    function __construct(){
        add_action('wcml_after_duplicate_product_post_meta',array($this,'sync_variation_swatches_and_photos'),10,3);
    }

    function sync_variation_swatches_and_photos($original_product_id, $trnsl_product_id, $data = false){
        global $sitepress, $wpdb;
        
        $atts = maybe_unserialize(get_post_meta($original_product_id, '_swatch_type_options', true));
				
				if (!is_array($atts)) {
					return;
				}
				
				$lang = $sitepress->get_language_for_element($trnsl_product_id,'post_product');
        $tr_atts = $atts;
				
				$original_product_post = get_post($original_product_id);
				
				$original_product_taxonomies = get_object_taxonomies($original_product_post);
				
				$original_product_terms = get_terms($original_product_taxonomies);
				
				if (is_array($original_product_terms)) {
					
					foreach ($atts as $att_name=>$att_opts) {
						
						$attributes_hashed_names = array_keys($att_opts['attributes']);
						
						foreach($original_product_terms as $original_product_term) {
							$original_product_term_slug_md5 = md5($original_product_term->slug);
							
							if (in_array($original_product_term_slug_md5, $attributes_hashed_names)) {
								
								$translated_product_term_id = apply_filters('wpml_object_id', $original_product_term->term_id, $original_product_term->taxonomy, false, $lang);
								
								$translated_product_term = get_term($translated_product_term_id, $original_product_term->taxonomy);
								
								if (is_object($translated_product_term)) {
									
									$translated_product_term_slug_md5 = md5($translated_product_term->slug);
									
									$tr_atts[$att_name]['attributes'][$translated_product_term_slug_md5] = $tr_atts[$att_name]['attributes'][$original_product_term_slug_md5];
									
									unset( $tr_atts[$att_name]['attributes'][$original_product_term_slug_md5] );
								}
								
							}
							
						}
						
					}
					
				}

        update_post_meta($trnsl_product_id,'_swatch_type_options',$tr_atts); // Meta gets overwritten
    }

}