<?php

if (!defined('ABSPATH')) {
    exit; // Exit if accessed directly
}

if (false === $template_term_exists = get_term_by('slug', 'wiaastemplate', 'product_type')) {
    wp_insert_term('wiaastemplate', 'product_type');
}


function construct_template_products_class() {

    class WC_Product_Template extends WC_Product {


        public function __construct($product) {
            parent::__construct($product);
        }

        /**
         * Get internal type.
         *
         * @return string
         */
        public function get_type() {
            return 'wiaastemplate';
        }

        /**
         * Get template categories from template product meta
         *
         * @param $template_id integer
         * @param $template_category_slug string the name of the main wiaas category
         * @return mixed
         */
        public static function get_template_categories_from_meta($template_id, $template_category_slug) {

            return get_post_meta($template_id, $template_category_slug, true);
        }

        public static function extract_template_product_categories($category_meta) {
            $category_objects = array();


            if (empty($category_meta)) {
                return array();
            }

            foreach ($category_meta as $meta) {

                if (!empty($meta)) {


                    $category_template_id = $meta['template_category_id'];

                    $template_category_object = new Wiaas_Template_Category_Object(
                        $category_template_id,
                        $meta['template_category_title'],
                        $meta['quantity']);

                    $category_objects[$category_template_id] = $template_category_object;
                }

            }
            return empty($category_objects) ? null : $category_objects;
        }

        /**
         * Get template categories from bundled products items
         *
         * @param $bundled_items array
         * @return array
         */
        public static function extract_bundled_product_categories($bundled_items) {

            $template_category_objects = array();
            foreach ($bundled_items as $item_id => $item) {
                $item_data = $item->get_data();
                $post_terms = wp_get_object_terms($item->get_product_id(), 'template_category', array('fields' => 'id=>name'));

                if (!empty($post_terms) && !is_wp_error($post_terms)) {

                    $cat = '';
                    $category_template_id = '';

                    foreach ($post_terms as $id => $term) {
                        $cat = $term;
                        $category_template_id = $id;
                    }

                    $template_category_object = new Wiaas_Template_Category_Object(
                        $category_template_id,
                        $cat,
                        $item_data['quantity_max'],
                        $item->get_id(),
                        $item->get_title());
                    $template_category_objects[$category_template_id] = $template_category_object;

                }
            }

            return $template_category_objects;
        }

        /**
         * Save selected template to bundled product meta
         *
         * @param $selected_template integer
         * @param $post_id integer
         */

        public static function bind_selected_template_to_product($selected_template, $post_id) {
            if (!empty($selected_template))
                update_post_meta($post_id, '_select_template', esc_attr($selected_template));
            else {
                update_post_meta($post_id, '_select_template', '');
            }
        }

        /**
         * Save template categories to template product  meta
         *
         * @param $post_id integer
         * @param $option string a main wiaas category
         * @param $processed_template_data array actual template category data
         */

        public static function save_template_product_meta($post_id, $option, $processed_template_data) {

            update_post_meta($post_id, '_template_items_' . $option, $processed_template_data);

        }
    }
}


add_action('init', 'construct_template_products_class');

function woocommerce_product_class($classname, $product_type) {

    if ($product_type == 'wiaastemplate') {
        $classname = 'WC_Product_Template';
    }

    return $classname;
}

add_filter('woocommerce_product_class', 'woocommerce_product_class', 10, 2);