WPGlobaCart - sync and create global coupons to other shops in the network

<?php

    include ('../../wp-load.php');

    global $post;

    $args   =   array (
                        'post_type'         =>      'shop_coupon',
                        'posts_per_page'    =>  -1
                        );
    $custom_query   =   new WP_Query( $args );

    while ( $custom_query->have_posts() )
        {
            $custom_query->the_post();

            $coupon_data    =   array (
                                        'global_coupon'                 =>  'yes',

                                        'global_coupon_unlink'          =>  'yes',
                                        'product_categories'            =>  array(),
                                        'exclude_product_categories'    =>  array(),

                                        'discount_type'                 =>  get_post_meta ( $post->ID, 'discount_type', TRUE ),
                                        'coupon_amount'                 =>  get_post_meta ( $post->ID, 'coupon_amount', TRUE ),
                                        'date_expires'                  =>  get_post_meta ( $post->ID, 'date_expires', TRUE ),
                                        'individual_use'                =>  get_post_meta ( $post->ID, 'individual_use', TRUE ),
                                        'product_ids'                   =>  array(),
                                        'excluded_product_ids'          =>  array(),
                                        'usage_limit'                   =>  get_post_meta ( $post->ID, 'usage_limit', TRUE ),
                                        'usage_limit_per_user'          =>  get_post_meta ( $post->ID, 'usage_limit_per_user', TRUE ),
                                        'limit_usage_to_x_items'        =>  get_post_meta ( $post->ID, 'limit_usage_to_x_items', TRUE ),
                                        'free_shipping'                 =>  get_post_meta ( $post->ID, 'free_shipping', TRUE ),
                                        'exclude_sale_items'            =>  get_post_meta ( $post->ID, 'exclude_sale_items', TRUE ),
                                        'minimum_amount'                =>  get_post_meta ( $post->ID, 'minimum_amount', TRUE ),
                                        'maximum_amount'                =>  get_post_meta ( $post->ID, 'maximum_amount', TRUE ),
                                        'email_restrictions'            =>  array()
                                        );

            echo "Synchronizing coupon ID " . $post->ID ."<br />";

            woocommerce_coupon_options_save( $post->ID, $coupon_data );

        }



    echo "Completed";



    function woocommerce_coupon_options_save( $coupon_ID, $coupon_data )
        {
            global $post, $WooGC;

            //previous setting
            $previous_option_global_coupon  =   get_post_meta ( $coupon_ID, 'global_coupon', TRUE );

            $global_coupon      =   wc_clean( $coupon_data['global_coupon'] );

            update_post_meta ( $coupon_ID, 'global_coupon',  $global_coupon );

            //ensure there is a hash for the coupon to estabilish a global syncronisation, when changed to Yes/No
            $coupon_hash    =   get_post_meta ( $coupon_ID, '_global_coupon_hash',  TRUE );
            if ( empty ( $coupon_hash ) )
                {
                    $coupon_hash    =   md5 ( time () . $coupon_ID );
                    update_post_meta ( $coupon_ID, '_global_coupon_hash',  $coupon_hash );
                }

            //check for unlink
            $global_coupon_unlink      =   wc_clean( $coupon_data['global_coupon_unlink'] );
            if ( $previous_option_global_coupon ==  'yes' &&  $global_coupon    ==  'no' )
                {
                    global $blog_id;

                    $current_site   =   $blog_id;

                    //$coupon->save();
                    $sites  =   $WooGC->functions->get_gc_sites( TRUE, 'global_coupon/save' );
                    foreach ( $sites    as  $site )
                        {
                            if ( $site->blog_id ==  $current_site )
                                continue;

                            switch_to_blog( $site->blog_id );

                            $coupon_id  =   '';

                            $args = array(
                                           'post_type'  =>  'shop_coupon',
                                           'meta_key'   => '_global_coupon_hash',
                                           'meta_value' =>  $coupon_hash
                                        );
                            $founds = new WP_Query($args);
                            if ( $founds->found_posts > 0 )
                                {
                                    $founds->the_post();
                                    $coupon_id  =   $founds->post->ID;
                                }

                            if ( ! empty ( $coupon_id ) )
                                {
                                    if ( $global_coupon_unlink == 'yes' )
                                        wp_delete_post( $coupon_id, TRUE );
                                        else
                                        update_post_meta ( $coupon_id, 'global_coupon',  'no' );
                                }


                            restore_current_blog();
                        }

                }

            //syncrnize with other shops
            if ( $global_coupon    ==  'yes' )
                {
                    global $blog_id;

                    $current_site   =   $blog_id;

                    $coupon_post_data    =  get_post ( $coupon_ID );

                    $product_categories         = isset( $coupon_data['product_categories'] ) ? (array) $coupon_data['product_categories'] : array();
                    $exclude_product_categories = isset( $coupon_data['exclude_product_categories'] ) ? (array) $coupon_data['exclude_product_categories'] : array();

                    $coupon_props = array(
                                            'code'                        => $post->post_title,
                                            'discount_type'               => wc_clean( $coupon_data['discount_type'] ),
                                            'amount'                      => wc_format_decimal( $coupon_data['coupon_amount'] ),
                                            'date_expires'                => wc_clean( $coupon_data['date_expires'] ),
                                            'individual_use'              => isset( $coupon_data['individual_use'] ),
                                            'product_ids'                 => isset( $coupon_data['product_ids'] ) ? array_filter( array_map( 'intval', (array) $coupon_data['product_ids'] ) ) : array(),
                                            'excluded_product_ids'        => isset( $coupon_data['exclude_product_ids'] ) ? array_filter( array_map( 'intval', (array) $coupon_data['exclude_product_ids'] ) ) : array(),
                                            'usage_limit'                 => absint( $coupon_data['usage_limit'] ),
                                            'usage_limit_per_user'        => absint( $coupon_data['usage_limit_per_user'] ),
                                            'limit_usage_to_x_items'      => absint( $coupon_data['limit_usage_to_x_items'] ),
                                            'free_shipping'               => isset( $coupon_data['free_shipping'] ),
                                            'product_categories'          => array_filter( array_map( 'intval', $product_categories ) ),
                                            'excluded_product_categories' => array_filter( array_map( 'intval', $exclude_product_categories ) ),
                                            'exclude_sale_items'          => isset( $coupon_data['exclude_sale_items'] ),
                                            'minimum_amount'              => wc_format_decimal( $coupon_data['minimum_amount'] ),
                                            'maximum_amount'              => wc_format_decimal( $coupon_data['maximum_amount'] ),
                                            'email_restrictions'          => $coupon_data['email_restrictions'],
                                        );

                    $coupon_props   =   apply_filters( 'woogc/global_coupons/props', $coupon_props, $coupon_ID );

                    $sites  =   $WooGC->functions->get_gc_sites( TRUE, 'global_coupon/save' );
                    foreach ( $sites    as  $site )
                        {
                            if ( $site->blog_id ==  $current_site )
                                continue;

                            switch_to_blog( $site->blog_id );

                            $args = array(
                                           'post_type'  =>  'shop_coupon',
                                           'meta_key'   => '_global_coupon_hash',
                                           'meta_value' =>  $coupon_hash
                                        );
                            $founds = new WP_Query($args);
                            if ( $founds->found_posts < 1 )
                                {
                                    //no coupon found, creat it
                                    $new_coupon_post = (array)$coupon_post_data;
                                    unset ( $new_coupon_post['ID'] );
                                    unset ( $new_coupon_post['guid'] );

                                    // Insert the post into the database
                                    $coupon_id  =   wp_insert_post( $new_coupon_post );
                                }
                                else
                                {
                                    $founds->the_post();
                                    $coupon_id  =   $founds->post->ID;

                                    $new_coupon_post = (array)$coupon_post_data;
                                    $new_coupon_post['ID']  =   $coupon_id;

                                    // Insert the post into the database
                                    wp_update_post( $new_coupon_post );
                                }

                            $coupon = new WC_Coupon( $coupon_id );
                            $coupon->set_props( $coupon_props );
                            $coupon->save();

                            update_post_meta ( $coupon_id, 'global_coupon',  'yes' );
                            update_post_meta ( $coupon_id, '_global_coupon_hash',  $coupon_hash );

                            restore_current_blog();
                        }
                }

        }