File includes/class-woocommerce-izettle-inventory.php | WooCommerce iZettle 1.x Code Reference

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<?php
/**
 * The class that handles all functionality related to products inventory.
 *
 * @link       https://www.onlineforce.net
 * @since      1.0.0
 *
 * @package    Woocommerce_Izettle
 * @subpackage Woocommerce_Izettle/includes
 */

namespace Onlineforce\Woocommerce_Izettle;

use \Onlineforce\Izettle_Bindings\Izettle_Inventory;

/**
 * The class that handles all functionality related to products inventory.
 *
 * @since      1.0.0
 * @package    Woocommerce_Izettle
 * @subpackage Woocommerce_Izettle/includes
 * @author     Onlineforce Sweden AB <support@onlineforce.net>
 */
class Woocommerce_Izettle_Inventory {

    public static function get_inventory_from_izettle( $wc_product_id ) {
        if ( ! get_option( 'izettle_inventory_enabled' )
            || ! get_option( 'izettle_inventory_pull_enabled' ) ) {
            return false;
        }

        $cached_result = self::cache_get_izettle_qty( $wc_product_id );

        if ( $cached_result ) {
            return $cached_result;
        }

        $uuids = Woocommerce_Izettle_Products::get_mapping( $wc_product_id );

        $default_location_uuid = Izettle_Inventory::get_default_location()->uuid;

        $response = Izettle_Inventory::get_inventory(
            $default_location_uuid, $uuids->product_uuid, $uuids->variant_uuid
        );

        if ( is_numeric( $response ) ) {
            self::cache_set_izettle_qty( intval( $response ), $wc_product_id );
            return intval( $response );
        }

        return false;
    }

    public static function update_inventory_in_izettle( $wc_product_id, $new_qty ) {
        if ( ! get_option( 'izettle_inventory_push_enabled' ) || ! get_option( 'izettle_inventory_enabled' ) ) {
            return false;
        }

        if ( ! Woocommerce_Izettle_Products::is_synced( $wc_product_id ) ) {
            return false;
        }

        $uuids = Woocommerce_Izettle_Products::get_mapping( $wc_product_id );

        $store_loc = Izettle_Inventory::get_default_location()->uuid;
        $supplier_loc = Izettle_Inventory::get_supplier_location()->uuid;

        Izettle_Inventory::start_tracking( $uuids->product_uuid );

        $old_qty = self::get_inventory_from_izettle( $wc_product_id );

        if ( false === $old_qty ) {
            $old_qty = 0;
        }

        $change = $old_qty - $new_qty;

        $from_loc = $store_loc;
        $to_loc = $supplier_loc;

        if ( 0 === $change ) {
            return false;
        }

        // If new_qty is negative, we add to iZettle.
        if ( $change < 0 ) {
            $from_loc = $supplier_loc;
            $to_loc = $store_loc;
        }

        $response = Izettle_Inventory::update_inventory(
            $from_loc,
            $to_loc,
            $uuids->product_uuid,
            $uuids->variant_uuid,
            abs( $change )
        );

        if ( '404' === $response->headers['Status-Code'] ) {
            // TODO: should we really do the request all over again here?
            Izettle_Inventory::start_tracking( $uuids->product_uuid );
            self::update_inventory_in_izettle( $wc_product_id, $new_qty );
        }

        /*
        Woocommerce_Izettle_Admin::plugin_log(
            "Synced stock for product ID: {$product_id} to iZettle."
        );
        */

        return $new_qty;
    }

    public static function update_inventory_in_wc( $wc_product_id, $new_qty ) {
        if ( null === $new_qty || false === $new_qty ) {
            return false;
        }

        $wc_product = wc_get_product( $wc_product_id );
        $old_qty = $wc_product->get_stock_quantity();
        $change = $old_qty - $new_qty;

        if ( 0 === $change ) {
            return false;
        }

        wc_update_product_stock(
            $wc_product, $new_qty
        );
    }

    public static function get_izettle_inventory_all() {
        try {
            $izettle_inventory = Izettle_Inventory::get_inventory_all(
                Izettle_Inventory::get_default_location()->uuid
            );
            return $izettle_inventory;

        } catch ( \Exception $e ) {
            Woocommerce_Izettle_Admin::plugin_log( $e->getMessage() );
        }
    }

    public static function hook_update_stock( $wc_product ) {
        return self::update_inventory_in_izettle(
            $wc_product->get_id(),
            $wc_product->get_stock_quantity()
        );
    }

    private static function cache_set_izettle_qty( $qty, $wc_product_id ) {
        set_transient(
            'woocommerce_izettle_stock_' . $wc_product_id,
            $qty,
            1 * MINUTE_IN_SECONDS
        );
    }

    private static function cache_get_izettle_qty( $wc_product_id ) {
        return get_transient( 'woocommerce_izettle_stock_' . $wc_product_id );
    }
}

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