class-wc-gateway-paypal.php
<?php
/**
* PayPal Standard Payment Gateway.
*
* Provides a PayPal Standard Payment Gateway.
*
* @class WC_Gateway_Paypal
* @extends WC_Payment_Gateway
* @version 2.3.0
* @package WooCommerce\Classes\Payment
*/
use Automattic\Jetpack\Constants;
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* WC_Gateway_Paypal Class.
*/
class WC_Gateway_Paypal extends WC_Payment_Gateway {
/**
* Whether or not logging is enabled
*
* @var bool
*/
public static $log_enabled = false;
/**
* Logger instance
*
* @var WC_Logger
*/
public static $log = false;
/**
* Whether the test mode is enabled.
*
* @var bool
*/
public $testmode;
/**
* Whether the debug mode is enabled.
*
* @var bool
*/
public $debug;
/**
* Email address to send payments to.
*
* @var string
*/
public $email;
/**
* Receiver email.
*
* @var string
*/
public $receiver_email;
/**
* Identity token.
*
* @var string
*/
public $identity_token;
/**
* Constructor for the gateway.
*/
public function __construct() {
$this->id = 'paypal';
$this->has_fields = false;
$this->order_button_text = __( 'Proceed to PayPal', 'woocommerce' );
$this->method_title = __( 'PayPal Standard', 'woocommerce' );
/* translators: %s: Link to WC system status page */
$this->method_description = __( 'PayPal Standard redirects customers to PayPal to enter their payment information.', 'woocommerce' );
$this->supports = array(
'products',
'refunds',
);
// Load the settings.
$this->init_form_fields();
$this->init_settings();
// Define user set variables.
$this->title = $this->get_option( 'title' );
$this->description = $this->get_option( 'description' );
$this->testmode = 'yes' === $this->get_option( 'testmode', 'no' );
$this->debug = 'yes' === $this->get_option( 'debug', 'no' );
$this->email = $this->get_option( 'email' );
$this->receiver_email = $this->get_option( 'receiver_email', $this->email );
$this->identity_token = $this->get_option( 'identity_token' );
self::$log_enabled = $this->debug;
if ( $this->testmode ) {
/* translators: %s: Link to PayPal sandbox testing guide page */
$this->description .= ' ' . sprintf( __( 'SANDBOX ENABLED. You can use sandbox testing accounts only. See the <a href="%s">PayPal Sandbox Testing Guide</a> for more details.', 'woocommerce' ), 'https://developer.paypal.com/docs/classic/lifecycle/ug_sandbox/' );
$this->description = trim( $this->description );
}
// Actions.
add_action( 'woocommerce_update_options_payment_gateways_' . $this->id, array( $this, 'process_admin_options' ) );
add_action( 'woocommerce_order_status_processing', array( $this, 'capture_payment' ) );
add_action( 'woocommerce_order_status_completed', array( $this, 'capture_payment' ) );
add_action( 'admin_enqueue_scripts', array( $this, 'admin_scripts' ) );
if ( ! $this->is_valid_for_use() ) {
$this->enabled = 'no';
} else {
include_once dirname( __FILE__ ) . '/includes/class-wc-gateway-paypal-ipn-handler.php';
new WC_Gateway_Paypal_IPN_Handler( $this->testmode, $this->receiver_email );
if ( $this->identity_token ) {
include_once dirname( __FILE__ ) . '/includes/class-wc-gateway-paypal-pdt-handler.php';
$pdt_handler = new WC_Gateway_Paypal_PDT_Handler( $this->testmode, $this->identity_token );
$pdt_handler->set_receiver_email( $this->receiver_email );
}
}
if ( 'yes' === $this->enabled ) {
add_filter( 'woocommerce_thankyou_order_received_text', array( $this, 'order_received_text' ), 10, 2 );
}
}
/**
* Return whether or not this gateway still requires setup to function.
*
* When this gateway is toggled on via AJAX, if this returns true a
* redirect will occur to the settings page instead.
*
* @since 3.4.0
* @return bool
*/
public function needs_setup() {
return ! is_email( $this->email );
}
/**
* Logging method.
*
* @param string $message Log message.
* @param string $level Optional. Default 'info'. Possible values:
* emergency|alert|critical|error|warning|notice|info|debug.
*/
public static function log( $message, $level = 'info' ) {
if ( self::$log_enabled ) {
if ( empty( self::$log ) ) {
self::$log = wc_get_logger();
}
self::$log->log( $level, $message, array( 'source' => 'paypal' ) );
}
}
/**
* Processes and saves options.
* If there is an error thrown, will continue to save and validate fields, but will leave the erroring field out.
*
* @return bool was anything saved?
*/
public function process_admin_options() {
$saved = parent::process_admin_options();
// Maybe clear logs.
if ( 'yes' !== $this->get_option( 'debug', 'no' ) ) {
if ( empty( self::$log ) ) {
self::$log = wc_get_logger();
}
self::$log->clear( 'paypal' );
}
return $saved;
}
/**
* Get gateway icon.
*
* @return string
*/
public function get_icon() {
// We need a base country for the link to work, bail if in the unlikely event no country is set.
$base_country = WC()->countries->get_base_country();
if ( empty( $base_country ) ) {
return '';
}
$icon_html = '';
$icon = (array) $this->get_icon_image( $base_country );
foreach ( $icon as $i ) {
$icon_html .= '<img src="' . esc_attr( $i ) . '" alt="' . esc_attr__( 'PayPal acceptance mark', 'woocommerce' ) . '" />';
}
$icon_html .= sprintf( '<a href="%1$s" class="about_paypal" onclick="javascript:window.open(\'%1$s\',\'WIPaypal\',\'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, width=1060, height=700\'); return false;">' . esc_attr__( 'What is PayPal?', 'woocommerce' ) . '</a>', esc_url( $this->get_icon_url( $base_country ) ) );
return apply_filters( 'woocommerce_gateway_icon', $icon_html, $this->id );
}
/**
* Get the link for an icon based on country.
*
* @param string $country Country two letter code.
* @return string
*/
protected function get_icon_url( $country ) {
$url = 'https://www.paypal.com/' . strtolower( $country );
$home_counties = array( 'BE', 'CZ', 'DK', 'HU', 'IT', 'JP', 'NL', 'NO', 'ES', 'SE', 'TR', 'IN' );
$countries = array( 'DZ', 'AU', 'BH', 'BQ', 'BW', 'CA', 'CN', 'CW', 'FI', 'FR', 'DE', 'GR', 'HK', 'ID', 'JO', 'KE', 'KW', 'LU', 'MY', 'MA', 'OM', 'PH', 'PL', 'PT', 'QA', 'IE', 'RU', 'BL', 'SX', 'MF', 'SA', 'SG', 'SK', 'KR', 'SS', 'TW', 'TH', 'AE', 'GB', 'US', 'VN' );
if ( in_array( $country, $home_counties, true ) ) {
return $url . '/webapps/mpp/home';
} elseif ( in_array( $country, $countries, true ) ) {
return $url . '/webapps/mpp/paypal-popup';
} else {
return $url . '/cgi-bin/webscr?cmd=xpt/Marketing/general/WIPaypal-outside';
}
}
/**
* Get PayPal images for a country.
*
* @param string $country Country code.
* @return array of image URLs
*/
protected function get_icon_image( $country ) {
switch ( $country ) {
case 'US':
case 'NZ':
case 'CZ':
case 'HU':
case 'MY':
$icon = 'https://www.paypalobjects.com/webstatic/mktg/logo/AM_mc_vs_dc_ae.jpg';
break;
case 'TR':
$icon = 'https://www.paypalobjects.com/webstatic/mktg/logo-center/logo_paypal_odeme_secenekleri.jpg';
break;
case 'GB':
$icon = 'https://www.paypalobjects.com/webstatic/mktg/Logo/AM_mc_vs_ms_ae_UK.png';
break;
case 'MX':
$icon = array(
'https://www.paypal.com/es_XC/Marketing/i/banner/paypal_visa_mastercard_amex.png',
'https://www.paypal.com/es_XC/Marketing/i/banner/paypal_debit_card_275x60.gif',
);
break;
case 'FR':
$icon = 'https://www.paypalobjects.com/webstatic/mktg/logo-center/logo_paypal_moyens_paiement_fr.jpg';
break;
case 'AU':
$icon = 'https://www.paypalobjects.com/webstatic/en_AU/mktg/logo/Solutions-graphics-1-184x80.jpg';
break;
case 'DK':
$icon = 'https://www.paypalobjects.com/webstatic/mktg/logo-center/logo_PayPal_betalingsmuligheder_dk.jpg';
break;
case 'RU':
$icon = 'https://www.paypalobjects.com/webstatic/ru_RU/mktg/business/pages/logo-center/AM_mc_vs_dc_ae.jpg';
break;
case 'NO':
$icon = 'https://www.paypalobjects.com/webstatic/mktg/logo-center/banner_pl_just_pp_319x110.jpg';
break;
case 'CA':
$icon = 'https://www.paypalobjects.com/webstatic/en_CA/mktg/logo-image/AM_mc_vs_dc_ae.jpg';
break;
case 'HK':
$icon = 'https://www.paypalobjects.com/webstatic/en_HK/mktg/logo/AM_mc_vs_dc_ae.jpg';
break;
case 'SG':
$icon = 'https://www.paypalobjects.com/webstatic/en_SG/mktg/Logos/AM_mc_vs_dc_ae.jpg';
break;
case 'TW':
$icon = 'https://www.paypalobjects.com/webstatic/en_TW/mktg/logos/AM_mc_vs_dc_ae.jpg';
break;
case 'TH':
$icon = 'https://www.paypalobjects.com/webstatic/en_TH/mktg/Logos/AM_mc_vs_dc_ae.jpg';
break;
case 'JP':
$icon = 'https://www.paypal.com/ja_JP/JP/i/bnr/horizontal_solution_4_jcb.gif';
break;
case 'IN':
$icon = 'https://www.paypalobjects.com/webstatic/mktg/logo/AM_mc_vs_dc_ae.jpg';
break;
default:
$icon = WC_HTTPS::force_https_url( WC()->plugin_url() . '/includes/gateways/paypal/assets/images/paypal.png' );
break;
}
return apply_filters( 'woocommerce_paypal_icon', $icon );
}
/**
* Check if this gateway is available in the user's country based on currency.
*
* @return bool
*/
public function is_valid_for_use() {
return in_array(
get_woocommerce_currency(),
apply_filters(
'woocommerce_paypal_supported_currencies',
array( 'AUD', 'BRL', 'CAD', 'MXN', 'NZD', 'HKD', 'SGD', 'USD', 'EUR', 'JPY', 'TRY', 'NOK', 'CZK', 'DKK', 'HUF', 'ILS', 'MYR', 'PHP', 'PLN', 'SEK', 'CHF', 'TWD', 'THB', 'GBP', 'RMB', 'RUB', 'INR' )
),
true
);
}
/**
* Admin Panel Options.
* - Options for bits like 'title' and availability on a country-by-country basis.
*
* @since 1.0.0
*/
public function admin_options() {
if ( $this->is_valid_for_use() ) {
parent::admin_options();
} else {
?>
<div class="inline error">
<p>
<strong><?php esc_html_e( 'Gateway disabled', 'woocommerce' ); ?></strong>: <?php esc_html_e( 'PayPal Standard does not support your store currency.', 'woocommerce' ); ?>
</p>
</div>
<?php
}
}
/**
* Initialise Gateway Settings Form Fields.
*/
public function init_form_fields() {
$this->form_fields = include __DIR__ . '/includes/settings-paypal.php';
}
/**
* Get the transaction URL.
*
* @param WC_Order $order Order object.
* @return string
*/
public function get_transaction_url( $order ) {
if ( $this->testmode ) {
$this->view_transaction_url = 'https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_view-a-trans&id=%s';
} else {
$this->view_transaction_url = 'https://www.paypal.com/cgi-bin/webscr?cmd=_view-a-trans&id=%s';
}
return parent::get_transaction_url( $order );
}
/**
* Process the payment and return the result.
*
* @param int $order_id Order ID.
* @return array
*/
public function process_payment( $order_id ) {
include_once dirname( __FILE__ ) . '/includes/class-wc-gateway-paypal-request.php';
$order = wc_get_order( $order_id );
$paypal_request = new WC_Gateway_Paypal_Request( $this );
return array(
'result' => 'success',
'redirect' => $paypal_request->get_request_url( $order, $this->testmode ),
);
}
/**
* Can the order be refunded via PayPal?
*
* @param WC_Order $order Order object.
* @return bool
*/
public function can_refund_order( $order ) {
$has_api_creds = false;
if ( $this->testmode ) {
$has_api_creds = $this->get_option( 'sandbox_api_username' ) && $this->get_option( 'sandbox_api_password' ) && $this->get_option( 'sandbox_api_signature' );
} else {
$has_api_creds = $this->get_option( 'api_username' ) && $this->get_option( 'api_password' ) && $this->get_option( 'api_signature' );
}
return $order && $order->get_transaction_id() && $has_api_creds;
}
/**
* Init the API class and set the username/password etc.
*/
protected function init_api() {
include_once dirname( __FILE__ ) . '/includes/class-wc-gateway-paypal-api-handler.php';
WC_Gateway_Paypal_API_Handler::$api_username = $this->testmode ? $this->get_option( 'sandbox_api_username' ) : $this->get_option( 'api_username' );
WC_Gateway_Paypal_API_Handler::$api_password = $this->testmode ? $this->get_option( 'sandbox_api_password' ) : $this->get_option( 'api_password' );
WC_Gateway_Paypal_API_Handler::$api_signature = $this->testmode ? $this->get_option( 'sandbox_api_signature' ) : $this->get_option( 'api_signature' );
WC_Gateway_Paypal_API_Handler::$sandbox = $this->testmode;
}
/**
* Process a refund if supported.
*
* @param int $order_id Order ID.
* @param float $amount Refund amount.
* @param string $reason Refund reason.
* @return bool|WP_Error
*/
public function process_refund( $order_id, $amount = null, $reason = '' ) {
$order = wc_get_order( $order_id );
if ( ! $this->can_refund_order( $order ) ) {
return new WP_Error( 'error', __( 'Refund failed.', 'woocommerce' ) );
}
$this->init_api();
$result = WC_Gateway_Paypal_API_Handler::refund_transaction( $order, $amount, $reason );
if ( is_wp_error( $result ) ) {
static::log( 'Refund Failed: ' . $result->get_error_message(), 'error' );
return new WP_Error( 'error', $result->get_error_message() );
}
static::log( 'Refund Result: ' . wc_print_r( $result, true ) );
switch ( strtolower( $result->ACK ) ) { // phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase
case 'success':
case 'successwithwarning':
$order->add_order_note(
/* translators: 1: Refund amount, 2: Refund ID */
sprintf( __( 'Refunded %1$s - Refund ID: %2$s', 'woocommerce' ), $result->GROSSREFUNDAMT, $result->REFUNDTRANSACTIONID ) // phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase
);
return true;
}
return isset( $result->L_LONGMESSAGE0 ) ? new WP_Error( 'error', $result->L_LONGMESSAGE0 ) : false; // phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase
}
/**
* Capture payment when the order is changed from on-hold to complete or processing
*
* @param int $order_id Order ID.
*/
public function capture_payment( $order_id ) {
$order = wc_get_order( $order_id );
if ( 'paypal' === $order->get_payment_method() && 'pending' === $order->get_meta( '_paypal_status', true ) && $order->get_transaction_id() ) {
$this->init_api();
$result = WC_Gateway_Paypal_API_Handler::do_capture( $order );
if ( is_wp_error( $result ) ) {
static::log( 'Capture Failed: ' . $result->get_error_message(), 'error' );
/* translators: %s: Paypal gateway error message */
$order->add_order_note( sprintf( __( 'Payment could not be captured: %s', 'woocommerce' ), $result->get_error_message() ) );
return;
}
static::log( 'Capture Result: ' . wc_print_r( $result, true ) );
// phpcs:disable WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase
if ( ! empty( $result->PAYMENTSTATUS ) ) {
switch ( $result->PAYMENTSTATUS ) {
case 'Completed':
/* translators: 1: Amount, 2: Authorization ID, 3: Transaction ID */
$order->add_order_note( sprintf( __( 'Payment of %1$s was captured - Auth ID: %2$s, Transaction ID: %3$s', 'woocommerce' ), $result->AMT, $result->AUTHORIZATIONID, $result->TRANSACTIONID ) );
$order->update_meta_data( '_paypal_status', $result->PAYMENTSTATUS );
$order->set_transaction_id( $result->TRANSACTIONID );
$order->save();
break;
default:
/* translators: 1: Authorization ID, 2: Payment status */
$order->add_order_note( sprintf( __( 'Payment could not be captured - Auth ID: %1$s, Status: %2$s', 'woocommerce' ), $result->AUTHORIZATIONID, $result->PAYMENTSTATUS ) );
break;
}
}
// phpcs:enable
}
}
/**
* Load admin scripts.
*
* @since 3.3.0
*/
public function admin_scripts() {
$screen = get_current_screen();
$screen_id = $screen ? $screen->id : '';
if ( 'woocommerce_page_wc-settings' !== $screen_id ) {
return;
}
$suffix = Constants::is_true( 'SCRIPT_DEBUG' ) ? '' : '.min';
$version = Constants::get_constant( 'WC_VERSION' );
wp_enqueue_script( 'woocommerce_paypal_admin', WC()->plugin_url() . '/includes/gateways/paypal/assets/js/paypal-admin' . $suffix . '.js', array(), $version, true );
}
/**
* Custom PayPal order received text.
*
* @since 3.9.0
* @param string $text Default text.
* @param WC_Order $order Order data.
* @return string
*/
public function order_received_text( $text, $order ) {
if ( $order && $this->id === $order->get_payment_method() ) {
return esc_html__( 'Thank you for your payment. Your transaction has been completed, and a receipt for your purchase has been emailed to you. Log into your PayPal account to view transaction details.', 'woocommerce' );
}
return $text;
}
/**
* Determines whether PayPal Standard should be loaded or not.
*
* By default PayPal Standard isn't loaded on new installs or on existing sites which haven't set up the gateway.
*
* @since 5.5.0
*
* @return bool Whether PayPal Standard should be loaded.
*/
public function should_load() {
$option_key = '_should_load';
$should_load = $this->get_option( $option_key );
if ( '' === $should_load ) {
// Set default `_should_load` to 'yes' on existing stores with PayPal Standard enabled or with existing PayPal Standard orders.
$should_load = 'yes' === $this->enabled || $this->has_paypal_orders();
$this->update_option( $option_key, wc_bool_to_string( $should_load ) );
} else {
// Enabled always takes precedence over the option.
$should_load = wc_string_to_bool( $this->enabled ) || wc_string_to_bool( $should_load );
}
return $should_load;
}
/**
* Checks if the store has at least one PayPal Standand order.
*
* @return bool
*/
public function has_paypal_orders() {
$paypal_orders = wc_get_orders(
array(
'limit' => 1,
'return' => 'ids',
'payment_method' => 'paypal',
)
);
return is_countable( $paypal_orders ) ? 1 === count( $paypal_orders ) : false;
}
}
