File controllers/class-wc-stripe-controller-source.php

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<?php
defined( 'ABSPATH' ) || exit();

/**
 * Controller class that perfors cart operations for client side requests.
 *
 * @author PaymentPlugins
 * @package Stripe/Controllers
 *
 */
class WC_Stripe_Controller_Source extends WC_Stripe_Rest_Controller {

    protected $namespace = 'source';

    public function register_routes() {
        register_rest_route( $this->rest_uri(), 'update', array(
            'methods'             => WP_REST_Server::CREATABLE,
            'callback'            => array( $this, 'update_source' ),
            'permission_callback' => '__return_true',
            'args'                => array(
                'source_id'     => array( 'required' => true ),
                'client_secret' => array( 'required' => true ),
                'updates'       => array( 'required' => true ),
                'gateway_id'    => array( 'required', true )
            )
        ) );
        register_rest_route(
            $this->rest_uri(), 'order/source', array(
                'methods'             => WP_REST_Server::DELETABLE,
                'callback'            => array( $this, 'delete_order_source' ),
                'permission_callback' => '__return_true',
            )
        );
    }

    /**
     * @param WP_REST_Request $request
     */
    public function update_source( $request ) {

        try {
            /**
             * @var WC_Payment_Gateway_Stripe $payment_method
             */
            $payment_method = WC()->payment_gateways()->payment_gateways()[ $request['payment_method'] ];

            // fetch the source and check client token and status
            $source = $payment_method->payment_object->get_gateway()->sources->retrieve( $request['source_id'] );

            if ( is_wp_error( $source ) ) {
                throw new Exception( __( 'Error updating source.', 'woo-stripe-payment' ) );
            }
            if ( $source->status !== 'chargeable' ) {
                if ( ! hash_equals( $source->client_secret, $request['client_secret'] ) ) {
                    throw new Exception( __( 'You do not have permission to update this source.', 'woo-stripe-payment' ) );
                }
                //update the source
                $updates = $request['updates'];
                if ( WC()->cart ) {
                    $updates['amount'] = wc_stripe_add_number_precision( WC()->cart->total, strtoupper( $source->currency ) );
                    if ( 'stripe_klarna' === $payment_method->id ) {
                        unset( $updates['source_order']['items'] );
                        /**
                         * @var WC_Payment_Gateway_Stripe_Klarna $payment_method
                         */
                        $payment_method->add_klarna_line_items_from_cart( $updates, WC()->cart, strtoupper( $source->currency ) );
                    }
                }
                $source = $payment_method->payment_object->get_gateway()->sources->update( $request['source_id'], $updates );
                if ( is_wp_error( $source ) ) {
                    throw new Exception( __( 'Error updating source.', 'woo-stripe-payment' ) );
                }
            }

            return rest_ensure_response( array( 'source' => $source->toArray() ) );
        } catch ( Exception $e ) {
            return new WP_Error( 'source-error', $e->getMessage(), array( 'status' => 400 ) );
        }
    }

    /**
     * Deletes a source from an order if the order exists.
     *
     * @param WP_REST_Request $request
     *
     * @return WP_REST_Response
     * @since 3.1.7
     */
    public function delete_order_source( $request ) {
        $order_id = WC()->session->get( 'order_awaiting_payment', null );
        if ( $order_id ) {
            $order = wc_get_order( $order_id );
            $order->delete_meta_data( WC_Stripe_Constants::SOURCE_ID );
            $order->save();
        }

        return rest_ensure_response( array( 'success' => true ) );
    }
}

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