<?php
/**
 * Description of WpmlController
 *
 * @author Ali2Woo Team
 * 
 * @autoload: a2wl_admin_init
 */

namespace AliNext_Lite;;

class WpmlController {

    public function __construct() {
        add_action('wcml_after_sync_product_data', array($this, 'sync_product_data'), 100, 3);
    }

    /* This function will be called after the product has been transferred.
        *
        * In this place need to build attributes values and update swatches IDs, and do other cool stuff
    */
    public function sync_product_data($or_product_id, $tr_product_id, $language){
        global $wpdb;

        // Build attributes values and update swatches IDs

        $or_product_attributes = get_post_meta($tr_product_id, '_product_attributes',true);
        $var_attrs = array();
        if ($or_product_attributes) {
            foreach($or_product_attributes as $key=>$val) {
                if ($val['is_variation']){
                    $var_attrs[$key] = array(); 
                }
            }
        }

        if (!empty($var_attrs)) {
            // Collect attributes value from original product variations
            $arrts_str = implode(",", array_map(
                function($v) {
                    return "'attribute_$v'";
                },
                array_keys($var_attrs))
            );

            $sql = $wpdb->prepare(
                "SELECT DISTINCT pm.meta_key, pm.meta_value FROM {$wpdb->posts} p " .
                      "LEFT JOIN {$wpdb->postmeta} pm ON (p.ID = pm.post_id) " .
                        // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
                      "WHERE post_parent=%d AND meta_key IN ($arrts_str)", $or_product_id);
            // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
            $results = $wpdb->get_results($sql, ARRAY_A);
            foreach($results as $res) {
                $attr_name = substr($res['meta_key'], strlen('attribute_'));
                $var_attrs[$attr_name][] = $res['meta_value'];
            }

            $tr_swatch = get_post_meta($tr_product_id, '_swatch_type_options',true);

            // Replace default lang swatches ID to translated swatches ID
            foreach ($var_attrs as $attr_slug=>$values) {
                $attr_id = md5($attr_slug);
                foreach ($values as $val) {
                    $val_id = md5($val);
                    $new_val_id = md5($val.'-'.$language);
                    if (isset($tr_swatch[$attr_id]['attributes'][$val_id])) {
                        $tr_swatch[$attr_id]['attributes'][$new_val_id] = $tr_swatch[$attr_id]['attributes'][$val_id];
                        unset($tr_swatch[$attr_id]['attributes'][$val_id]);
                    }
                }
            }

            update_post_meta($tr_product_id, '_swatch_type_options', $tr_swatch);
        }
        
    }

}