File class-wc-stripe-customer-manager.php

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

/**
 * Class that manages customer creation and custom updates.
 *
 * @since 3.0.0
 * @package Stripe/Classes
 * @author PaymentPlugins
 *
 */
class WC_Stripe_Customer_Manager {

    private static $_instance;

    public static function instance() {
        if ( ! self::$_instance ) {
            self::$_instance = new self();
        }

        return self::$_instance;
    }

    public function __construct() {
        add_action( 'woocommerce_checkout_update_customer', array( $this, 'checkout_update_customer' ), 10, 2 );
        add_action( 'wp_loaded', array( $this, 'wp_loaded' ) );
    }

    /**
     *
     * @param WC_Customer $customer
     * @param array $data
     */
    public function checkout_update_customer( $customer, $data ) {
        if ( $this->user_has_id( $customer ) ) {
            if ( $this->should_update_customer( $customer ) ) {
                $result = $this->update_customer( $customer );
                if ( is_wp_error( $result ) ) {
                    // add info to log. This error isn't added to wc_add_notice because we don't want a user update to
                    // interfere with payment being processed.
                    wc_stripe_log_error( sprintf( __( 'Error saving customer. Reason: %s', 'woo-stripe-payment' ), $result->get_error_message() ) );
                }
            }
        } else {
            // create the customer
            $response = $this->create_customer( $customer );
            if ( ! is_wp_error( $response ) ) {
                wc_stripe_save_customer( $response->id, $customer->get_id() );
            } else {
                wc_add_notice( sprintf( __( 'Error saving customer. Reason: %s', 'woo-stripe-payment' ), $response->get_error_message() ), 'error' );
            }
        }
    }

    /**
     *
     * @param WC_Customer $customer
     *
     * @return \Stripe\Customer|WP_Error
     */
    public function create_customer( $customer ) {
        return WC_Stripe_Gateway::load()->customers->create( apply_filters( 'wc_stripe_customer_args', $this->get_customer_args( $customer ) ) );
    }

    /**
     *
     * @param WC_Customer $customer
     */
    public function update_customer( $customer ) {
        return WC_Stripe_Gateway::load()->customers->update(
            wc_stripe_get_customer_id( $customer->get_id() ),
            apply_filters( 'wc_stripe_update_customer_args', $this->get_customer_args( $customer, 'update' ) )
        );
    }

    /**
     * Check if the Stripe customer has been created for the WC user.
     * If there is no Stripe customer then
     * create one and save it to the WC user.
     */
    public function wp_loaded() {
        $customer = WC()->customer;
        if ( $customer && $customer->get_id() ) {
            if ( ! $this->user_has_id( $customer ) ) {
                $response = $this->create_customer( $customer );
                if ( ! is_wp_error( $response ) ) {
                    wc_stripe_save_customer( $response->id, $customer->get_id() );
                }
            }
        }
    }

    /**
     *
     * @param WC_Customer $customer
     */
    private function user_has_id( $customer ) {
        $id = wc_stripe_get_customer_id( $customer->get_id() );

        // this customer may have an ID from another plugin. Check that too.
        if ( empty( $id ) ) {
            $id = get_user_option( '_stripe_customer_id', $customer->get_id() );
            if ( ! empty( $id ) ) {
                // validate that this customer exists in the Stripe gateway
                $response = WC_Stripe_Gateway::load()->customers->retrieve( $id );
                if ( ! is_wp_error( $response ) ) {
                    // id exists so save customer ID to this plugin's format.
                    wc_stripe_save_customer( $id, $customer->get_id() );

                    // load this customer's payment methods
                    $this->sync_payment_methods( $id, $customer->get_id() );
                } else {
                    $id = '';
                }
            }
        }

        return ! empty( $id );
    }

    /**
     * Syncs the WC database payment methods with the payment methods stored in Stripe.
     *
     * @param string $customer_id
     * @param int $user_id
     *
     * @since 3.1.0
     */
    public static function sync_payment_methods( $customer_id, $user_id, $mode = '' ) {
        $payment_methods = WC_Stripe_Gateway::load()->paymentMethods->mode( $mode )->all( array(
            'customer' => $customer_id,
            'type'     => 'card',
        ) );
        if ( ! is_wp_error( $payment_methods ) ) {
            foreach ( $payment_methods->data as $payment_method ) {
                /**
                 * @var \Stripe\PaymentMethod $payment_method
                 */
                if ( ! WC_Payment_Token_Stripe::token_exists( $payment_method->id, $user_id ) ) {
                    $payment_gateways = WC()->payment_gateways()->payment_gateways();
                    $gateway_id       = null;
                    $gateway_id       = 'stripe_cc';
                    if ( isset( $payment_method->card->wallet->type ) ) {
                        switch ( $payment_method->card->wallet->type ) {
                            case 'google_pay':
                                $gateway_id = 'stripe_googlepay';
                                break;
                            case 'apple_pay':
                                $gateway_id = 'stripe_applepay';
                                break;
                        }
                    }
                    /**
                     *
                     * @var WC_Payment_Gateway_Stripe_CC $payment_gateway
                     */ {
                        $payment_gateway = $payment_gateways[ $gateway_id ];
                    }
                    $token = $payment_gateway->get_payment_token( $payment_method->id, $payment_method );
                    $token->set_environment( $payment_method->livemode ? 'live' : 'test' );
                    $token->set_user_id( $user_id );
                    $token->set_customer_id( $customer_id );
                    $token->save();
                }
            }
        } else {
            wc_stripe_log_info( sprintf( 'Payment methods for customer %s could not be synced. Reason: %s', $customer_id, $payment_methods->get_error_message() ) );
        }
    }

    /**
     * Returns true if the customer should be updated in Stripe.
     *
     * @param WC_Customer $customer
     *
     * @return bool
     */
    private function should_update_customer( $customer ) {
        $changes = $customer->get_changes();
        if ( ! empty( $changes['billing'] ) ) {
            return array_intersect_key( $changes['billing'], array_flip( $this->get_attribute_keys() ) );
        }

        return false;
    }

    /**
     * Returns an array of user attributes.
     *
     * @return array
     */
    private function get_attribute_keys() {
        return apply_filters( 'wc_stripe_get_customer_attribute_keys', array(
            'first_name',
            'last_name',
            'email',
            'address_1',
            'address_2',
            'country',
            'state',
            'postcode'
        ) );
    }

    /**
     * Return an array of args used to create or update a customer.
     *
     * @param WC_Customer $customer
     * @param string $context
     *
     * @return array
     * @since 3.2.12
     */
    private function get_customer_args( $customer, $context = 'create' ) {
        $args = array(
            'email'   => $customer->get_email(),
            'name'    => sprintf( '%s %s', $customer->get_first_name(), $customer->get_last_name() ),
            'phone'   => $customer->get_billing_phone(),
            'address' => array(
                'city'        => $customer->get_billing_city(),
                'country'     => $customer->get_billing_country(),
                'line1'       => $customer->get_billing_address_1(),
                'line2'       => $customer->get_billing_address_2(),
                'postal_code' => $customer->get_billing_postcode(),
                'state'       => $customer->get_billing_state()
            )
        );
        if ( 'create' === $context ) {
            $args['metadata'] = array(
                'user_id'  => $customer->get_id(),
                'username' => $customer->get_username(),
                'website'  => get_site_url(),
            );
        }

        return $args;
    }
}

WC_Stripe_Customer_Manager::instance();

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