woocommerce / woocommerce-gateway-stripe

includes/admin/class-wc-stripe-admin-notices.php

Spacing +79 added lines, -79 removed lines

@@ -1,5 +1,5 @@ 
 <?php
-if ( ! defined( 'ABSPATH' ) ) {
+if ( ! defined('ABSPATH')) {
 	exit;
 }
 
@@ -21,8 +21,8 @@ 
 	 * @since 4.1.0
 	 */
 	public function __construct() {
-		add_action( 'admin_notices', array( $this, 'admin_notices' ) );
-		add_action( 'wp_loaded', array( $this, 'hide_notices' ) );
+		add_action('admin_notices', array($this, 'admin_notices'));
+		add_action('wp_loaded', array($this, 'hide_notices'));
 	}
 
 	/**
@@ -31,8 +31,8 @@ 
 	 * @since 1.0.0
 	 * @version 4.0.0
 	 */
-	public function add_admin_notice( $slug, $class, $message, $dismissible = false ) {
-		$this->notices[ $slug ] = array(
+	public function add_admin_notice($slug, $class, $message, $dismissible = false) {
+		$this->notices[$slug] = array(
 			'class'       => $class,
 			'message'     => $message,
 			'dismissible' => $dismissible,
@@ -46,7 +46,7 @@ 
 	 * @version 4.0.0
 	 */
 	public function admin_notices() {
-		if ( ! current_user_can( 'manage_woocommerce' ) ) {
+		if ( ! current_user_can('manage_woocommerce')) {
 			return;
 		}
 
@@ -56,17 +56,17 @@ 
 		// All other payment methods.
 		$this->payment_methods_check_environment();
 
-		foreach ( (array) $this->notices as $notice_key => $notice ) {
-			echo '<div class="' . esc_attr( $notice['class'] ) . '" style="position:relative;">';
+		foreach ((array) $this->notices as $notice_key => $notice) {
+			echo '<div class="' . esc_attr($notice['class']) . '" style="position:relative;">';
 
-			if ( $notice['dismissible'] ) {
+			if ($notice['dismissible']) {
 				?>
-				<a href="<?php echo esc_url( wp_nonce_url( add_query_arg( 'wc-stripe-hide-notice', $notice_key ), 'wc_stripe_hide_notices_nonce', '_wc_stripe_notice_nonce' ) ); ?>" class="woocommerce-message-close notice-dismiss" style="position:absolute;right:1px;padding:9px;text-decoration:none;"></a>
+				<a href="<?php echo esc_url(wp_nonce_url(add_query_arg('wc-stripe-hide-notice', $notice_key), 'wc_stripe_hide_notices_nonce', '_wc_stripe_notice_nonce')); ?>" class="woocommerce-message-close notice-dismiss" style="position:absolute;right:1px;padding:9px;text-decoration:none;"></a>
 				<?php
 			}
 
 			echo '<p>';
-			echo wp_kses( $notice['message'], array( 'a' => array( 'href' => array() ) ) );
+			echo wp_kses($notice['message'], array('a' => array('href' => array())));
 			echo '</p></div>';
 		}
 	}
@@ -99,83 +99,83 @@ 
 	 * @version 4.0.0
 	 */
 	public function stripe_check_environment() {
-		$show_ssl_notice    = get_option( 'wc_stripe_show_ssl_notice' );
-		$show_keys_notice   = get_option( 'wc_stripe_show_keys_notice' );
-		$show_phpver_notice = get_option( 'wc_stripe_show_phpver_notice' );
-		$show_wcver_notice  = get_option( 'wc_stripe_show_wcver_notice' );
-		$show_curl_notice   = get_option( 'wc_stripe_show_curl_notice' );
-		$options            = get_option( 'woocommerce_stripe_settings' );
-		$testmode           = ( isset( $options['testmode'] ) && 'yes' === $options['testmode'] ) ? true : false;
-		$test_pub_key       = isset( $options['test_publishable_key'] ) ? $options['test_publishable_key'] : '';
-		$test_secret_key    = isset( $options['test_secret_key'] ) ? $options['test_secret_key'] : '';
-		$live_pub_key       = isset( $options['publishable_key'] ) ? $options['publishable_key'] : '';
-		$live_secret_key    = isset( $options['secret_key'] ) ? $options['secret_key'] : '';
-
-		if ( isset( $options['enabled'] ) && 'yes' === $options['enabled'] ) {
-			if ( empty( $show_phpver_notice ) ) {
-				if ( version_compare( phpversion(), WC_STRIPE_MIN_PHP_VER, '<' ) ) {
+		$show_ssl_notice    = get_option('wc_stripe_show_ssl_notice');
+		$show_keys_notice   = get_option('wc_stripe_show_keys_notice');
+		$show_phpver_notice = get_option('wc_stripe_show_phpver_notice');
+		$show_wcver_notice  = get_option('wc_stripe_show_wcver_notice');
+		$show_curl_notice   = get_option('wc_stripe_show_curl_notice');
+		$options            = get_option('woocommerce_stripe_settings');
+		$testmode           = (isset($options['testmode']) && 'yes' === $options['testmode']) ? true : false;
+		$test_pub_key       = isset($options['test_publishable_key']) ? $options['test_publishable_key'] : '';
+		$test_secret_key    = isset($options['test_secret_key']) ? $options['test_secret_key'] : '';
+		$live_pub_key       = isset($options['publishable_key']) ? $options['publishable_key'] : '';
+		$live_secret_key    = isset($options['secret_key']) ? $options['secret_key'] : '';
+
+		if (isset($options['enabled']) && 'yes' === $options['enabled']) {
+			if (empty($show_phpver_notice)) {
+				if (version_compare(phpversion(), WC_STRIPE_MIN_PHP_VER, '<')) {
 					/* translators: 1) int version 2) int version */
-					$message = __( 'WooCommerce Stripe - The minimum PHP version required for this plugin is %1$s. You are running %2$s.', 'woocommerce-gateway-stripe' );
+					$message = __('WooCommerce Stripe - The minimum PHP version required for this plugin is %1$s. You are running %2$s.', 'woocommerce-gateway-stripe');
 
-					$this->add_admin_notice( 'phpver', 'error', sprintf( $message, WC_STRIPE_MIN_PHP_VER, phpversion() ), true );
+					$this->add_admin_notice('phpver', 'error', sprintf($message, WC_STRIPE_MIN_PHP_VER, phpversion()), true);
 
 					return;
 				}
 			}
 
-			if ( empty( $show_wcver_notice ) ) {
-				if ( version_compare( WC_VERSION, WC_STRIPE_MIN_WC_VER, '<' ) ) {
+			if (empty($show_wcver_notice)) {
+				if (version_compare(WC_VERSION, WC_STRIPE_MIN_WC_VER, '<')) {
 					/* translators: 1) int version 2) int version */
-					$message = __( 'WooCommerce Stripe - The minimum WooCommerce version required for this plugin is %1$s. You are running %2$s.', 'woocommerce-gateway-stripe' );
+					$message = __('WooCommerce Stripe - The minimum WooCommerce version required for this plugin is %1$s. You are running %2$s.', 'woocommerce-gateway-stripe');
 
-					$this->add_admin_notice( 'wcver', 'notice notice-warning', sprintf( $message, WC_STRIPE_MIN_WC_VER, WC_VERSION ), true );
+					$this->add_admin_notice('wcver', 'notice notice-warning', sprintf($message, WC_STRIPE_MIN_WC_VER, WC_VERSION), true);
 
 					return;
 				}
 			}
 
-			if ( empty( $show_curl_notice ) ) {
-				if ( ! function_exists( 'curl_init' ) ) {
-					$this->add_admin_notice( 'curl', 'notice notice-warning', __( 'WooCommerce Stripe - cURL is not installed.', 'woocommerce-gateway-stripe' ), true );
+			if (empty($show_curl_notice)) {
+				if ( ! function_exists('curl_init')) {
+					$this->add_admin_notice('curl', 'notice notice-warning', __('WooCommerce Stripe - cURL is not installed.', 'woocommerce-gateway-stripe'), true);
 				}
 			}
 
-			if ( empty( $show_keys_notice ) ) {
+			if (empty($show_keys_notice)) {
 				$secret = WC_Stripe_API::get_secret_key();
 
-				if ( empty( $secret ) && ! ( isset( $_GET['page'], $_GET['section'] ) && 'wc-settings' === $_GET['page'] && 'stripe' === $_GET['section'] ) ) {
+				if (empty($secret) && ! (isset($_GET['page'], $_GET['section']) && 'wc-settings' === $_GET['page'] && 'stripe' === $_GET['section'])) {
 					$setting_link = $this->get_setting_link();
 					/* translators: 1) link */
-					$this->add_admin_notice( 'keys', 'notice notice-warning', sprintf( __( 'Stripe is almost ready. To get started, <a href="%s">set your Stripe account keys</a>.', 'woocommerce-gateway-stripe' ), $setting_link ), true );
+					$this->add_admin_notice('keys', 'notice notice-warning', sprintf(__('Stripe is almost ready. To get started, <a href="%s">set your Stripe account keys</a>.', 'woocommerce-gateway-stripe'), $setting_link), true);
 				}
 
 				// Check if keys are entered properly per live/test mode.
-				if ( $testmode ) {
+				if ($testmode) {
 					if (
-						! empty( $test_pub_key ) && ! preg_match( '/^pk_test_/', $test_pub_key )
-						|| ( ! empty( $test_secret_key ) && ! preg_match( '/^sk_test_/', $test_secret_key )
-						&& ! empty( $test_secret_key ) && ! preg_match( '/^rk_test_/', $test_secret_key ) ) ) {
+						! empty($test_pub_key) && ! preg_match('/^pk_test_/', $test_pub_key)
+						|| ( ! empty($test_secret_key) && ! preg_match('/^sk_test_/', $test_secret_key)
+						&& ! empty($test_secret_key) && ! preg_match('/^rk_test_/', $test_secret_key)) ) {
 						$setting_link = $this->get_setting_link();
 						/* translators: 1) link */
-						$this->add_admin_notice( 'keys', 'notice notice-error', sprintf( __( 'Stripe is in test mode however your test keys may not be valid. Test keys start with pk_test and sk_test or rk_test. Please go to your settings and, <a href="%s">set your Stripe account keys</a>.', 'woocommerce-gateway-stripe' ), $setting_link ), true );
+						$this->add_admin_notice('keys', 'notice notice-error', sprintf(__('Stripe is in test mode however your test keys may not be valid. Test keys start with pk_test and sk_test or rk_test. Please go to your settings and, <a href="%s">set your Stripe account keys</a>.', 'woocommerce-gateway-stripe'), $setting_link), true);
 					}
 				} else {
 					if (
-						! empty( $live_pub_key ) && ! preg_match( '/^pk_live_/', $live_pub_key )
-						|| ( ! empty( $live_secret_key ) && ! preg_match( '/^sk_live_/', $live_secret_key )
-						&& ! empty( $live_secret_key ) && ! preg_match( '/^rk_live_/', $live_secret_key ) ) ) {
+						! empty($live_pub_key) && ! preg_match('/^pk_live_/', $live_pub_key)
+						|| ( ! empty($live_secret_key) && ! preg_match('/^sk_live_/', $live_secret_key)
+						&& ! empty($live_secret_key) && ! preg_match('/^rk_live_/', $live_secret_key)) ) {
 						$setting_link = $this->get_setting_link();
 						/* translators: 1) link */
-						$this->add_admin_notice( 'keys', 'notice notice-error', sprintf( __( 'Stripe is in live mode however your test keys may not be valid. Live keys start with pk_live and sk_live or rk_live. Please go to your settings and, <a href="%s">set your Stripe account keys</a>.', 'woocommerce-gateway-stripe' ), $setting_link ), true );
+						$this->add_admin_notice('keys', 'notice notice-error', sprintf(__('Stripe is in live mode however your test keys may not be valid. Live keys start with pk_live and sk_live or rk_live. Please go to your settings and, <a href="%s">set your Stripe account keys</a>.', 'woocommerce-gateway-stripe'), $setting_link), true);
 					}
 				}
 			}
 
-			if ( empty( $show_ssl_notice ) ) {
+			if (empty($show_ssl_notice)) {
 				// Show message if enabled and FORCE SSL is disabled and WordpressHTTPS plugin is not detected.
-				if ( ! wc_checkout_is_https() ) {
+				if ( ! wc_checkout_is_https()) {
 					/* translators: 1) link */
-					$this->add_admin_notice( 'ssl', 'notice notice-warning', sprintf( __( 'Stripe is enabled, but a SSL certificate is not detected. Your checkout may not be secure! Please ensure your server has a valid <a href="%1$s" target="_blank">SSL certificate</a>', 'woocommerce-gateway-stripe' ), 'https://en.wikipedia.org/wiki/Transport_Layer_Security' ), true );
+					$this->add_admin_notice('ssl', 'notice notice-warning', sprintf(__('Stripe is enabled, but a SSL certificate is not detected. Your checkout may not be secure! Please ensure your server has a valid <a href="%1$s" target="_blank">SSL certificate</a>', 'woocommerce-gateway-stripe'), 'https://en.wikipedia.org/wiki/Transport_Layer_Security'), true);
 				}
 			}
 		}
@@ -189,17 +189,17 @@ 
 	public function payment_methods_check_environment() {
 		$payment_methods = $this->get_payment_methods();
 
-		foreach ( $payment_methods as $method => $class ) {
-			$show_notice = get_option( 'wc_stripe_show_' . strtolower( $method ) . '_notice' );
+		foreach ($payment_methods as $method => $class) {
+			$show_notice = get_option('wc_stripe_show_' . strtolower($method) . '_notice');
 			$gateway     = new $class();
 
-			if ( 'yes' !== $gateway->enabled || 'no' === $show_notice ) {
+			if ('yes' !== $gateway->enabled || 'no' === $show_notice) {
 				continue;
 			}
 
-			if ( ! in_array( get_woocommerce_currency(), $gateway->get_supported_currency() ) ) {
+			if ( ! in_array(get_woocommerce_currency(), $gateway->get_supported_currency())) {
 				/* translators: %1$s Payment method, %2$s List of supported currencies */
-				$this->add_admin_notice( $method, 'notice notice-error', sprintf( __( '%1$s is enabled - it requires store currency to be set to %2$s', 'woocommerce-gateway-stripe' ), $method, implode( ', ', $gateway->get_supported_currency() ) ), true );
+				$this->add_admin_notice($method, 'notice notice-error', sprintf(__('%1$s is enabled - it requires store currency to be set to %2$s', 'woocommerce-gateway-stripe'), $method, implode(', ', $gateway->get_supported_currency())), true);
 			}
 		}
 	}
@@ -211,59 +211,59 @@ 
 	 * @version 4.0.0
 	 */
 	public function hide_notices() {
-		if ( isset( $_GET['wc-stripe-hide-notice'] ) && isset( $_GET['_wc_stripe_notice_nonce'] ) ) {
-			if ( ! wp_verify_nonce( $_GET['_wc_stripe_notice_nonce'], 'wc_stripe_hide_notices_nonce' ) ) {
-				wp_die( __( 'Action failed. Please refresh the page and retry.', 'woocommerce-gateway-stripe' ) );
+		if (isset($_GET['wc-stripe-hide-notice']) && isset($_GET['_wc_stripe_notice_nonce'])) {
+			if ( ! wp_verify_nonce($_GET['_wc_stripe_notice_nonce'], 'wc_stripe_hide_notices_nonce')) {
+				wp_die(__('Action failed. Please refresh the page and retry.', 'woocommerce-gateway-stripe'));
 			}
 
-			if ( ! current_user_can( 'manage_woocommerce' ) ) {
-				wp_die( __( 'Cheatin&#8217; huh?', 'woocommerce-gateway-stripe' ) );
+			if ( ! current_user_can('manage_woocommerce')) {
+				wp_die(__('Cheatin&#8217; huh?', 'woocommerce-gateway-stripe'));
 			}
 
-			$notice = wc_clean( $_GET['wc-stripe-hide-notice'] );
+			$notice = wc_clean($_GET['wc-stripe-hide-notice']);
 
-			switch ( $notice ) {
+			switch ($notice) {
 				case 'phpver':
-					update_option( 'wc_stripe_show_phpver_notice', 'no' );
+					update_option('wc_stripe_show_phpver_notice', 'no');
 					break;
 				case 'wcver':
-					update_option( 'wc_stripe_show_wcver_notice', 'no' );
+					update_option('wc_stripe_show_wcver_notice', 'no');
 					break;
 				case 'curl':
-					update_option( 'wc_stripe_show_curl_notice', 'no' );
+					update_option('wc_stripe_show_curl_notice', 'no');
 					break;
 				case 'ssl':
-					update_option( 'wc_stripe_show_ssl_notice', 'no' );
+					update_option('wc_stripe_show_ssl_notice', 'no');
 					break;
 				case 'keys':
-					update_option( 'wc_stripe_show_keys_notice', 'no' );
+					update_option('wc_stripe_show_keys_notice', 'no');
 					break;
 				case 'Alipay':
-					update_option( 'wc_stripe_show_alipay_notice', 'no' );
+					update_option('wc_stripe_show_alipay_notice', 'no');
 					break;
 				case 'Bancontact':
-					update_option( 'wc_stripe_show_bancontact_notice', 'no' );
+					update_option('wc_stripe_show_bancontact_notice', 'no');
 					break;
 				case 'EPS':
-					update_option( 'wc_stripe_show_eps_notice', 'no' );
+					update_option('wc_stripe_show_eps_notice', 'no');
 					break;
 				case 'Giropay':
-					update_option( 'wc_stripe_show_giropay_notice', 'no' );
+					update_option('wc_stripe_show_giropay_notice', 'no');
 					break;
 				case 'iDeal':
-					update_option( 'wc_stripe_show_ideal_notice', 'no' );
+					update_option('wc_stripe_show_ideal_notice', 'no');
 					break;
 				case 'Multibanco':
-					update_option( 'wc_stripe_show_multibanco_notice', 'no' );
+					update_option('wc_stripe_show_multibanco_notice', 'no');
 					break;
 				case 'P24':
-					update_option( 'wc_stripe_show_p24_notice', 'no' );
+					update_option('wc_stripe_show_p24_notice', 'no');
 					break;
 				case 'SEPA':
-					update_option( 'wc_stripe_show_sepa_notice', 'no' );
+					update_option('wc_stripe_show_sepa_notice', 'no');
 					break;
 				case 'SOFORT':
-					update_option( 'wc_stripe_show_sofort_notice', 'no' );
+					update_option('wc_stripe_show_sofort_notice', 'no');
 					break;
 			}
 		}
@@ -277,11 +277,11 @@ 
 	 * @return string Setting link
 	 */
 	public function get_setting_link() {
-		$use_id_as_section = function_exists( 'WC' ) ? version_compare( WC()->version, '2.6', '>=' ) : false;
+		$use_id_as_section = function_exists('WC') ? version_compare(WC()->version, '2.6', '>=') : false;
 
-		$section_slug = $use_id_as_section ? 'stripe' : strtolower( 'WC_Gateway_Stripe' );
+		$section_slug = $use_id_as_section ? 'stripe' : strtolower('WC_Gateway_Stripe');
 
-		return admin_url( 'admin.php?page=wc-settings&tab=checkout&section=' . $section_slug );
+		return admin_url('admin.php?page=wc-settings&tab=checkout&section=' . $section_slug);
 	}
 }
 

uninstall.php

Spacing +28 added lines, -28 removed lines

@@ -1,10 +1,10 @@ 
 <?php
-if ( ! defined( 'ABSPATH' ) ) {
+if ( ! defined('ABSPATH')) {
 	exit; // Exit if accessed directly
 }
 
 // if uninstall not called from WordPress exit
-if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
+if ( ! defined('WP_UNINSTALL_PLUGIN')) {
 	exit;
 }
 
@@ -13,31 +13,31 @@ 
  * wp-config.php. This is to prevent data loss when deleting the plugin from the backend
  * and to ensure only the site owner can perform this action.
  */
-if ( defined( 'WC_REMOVE_ALL_DATA' ) && true === WC_REMOVE_ALL_DATA ) {
+if (defined('WC_REMOVE_ALL_DATA') && true === WC_REMOVE_ALL_DATA) {
 	// Delete options.
-	delete_option( 'woocommerce_stripe_settings' );
-	delete_option( 'wc_stripe_show_styles_notice' );
-	delete_option( 'wc_stripe_show_request_api_notice' );
-	delete_option( 'wc_stripe_show_apple_pay_notice' );
-	delete_option( 'wc_stripe_show_ssl_notice' );
-	delete_option( 'wc_stripe_show_keys_notice' );
-	delete_option( 'wc_stripe_show_alipay_notice' );
-	delete_option( 'wc_stripe_show_bancontact_notice' );
-	delete_option( 'wc_stripe_show_bitcoin_notice' );
-	delete_option( 'wc_stripe_show_eps_notice' );
-	delete_option( 'wc_stripe_show_giropay_notice' );
-	delete_option( 'wc_stripe_show_ideal_notice' );
-	delete_option( 'wc_stripe_show_multibanco_notice' );
-	delete_option( 'wc_stripe_show_p24_notice' );
-	delete_option( 'wc_stripe_show_sepa_notice' );
-	delete_option( 'wc_stripe_show_sofort_notice' );
-	delete_option( 'wc_stripe_version' );
-	delete_option( 'woocommerce_stripe_bancontact_settings' );
-	delete_option( 'woocommerce_stripe_alipay_settings' );
-	delete_option( 'woocommerce_stripe_bitcoin_settings' );
-	delete_option( 'woocommerce_stripe_ideal_settings' );
-	delete_option( 'woocommerce_stripe_p24_settings' );
-	delete_option( 'woocommerce_stripe_giropay_settings' );
-	delete_option( 'woocommerce_stripe_sepa_settings' );
-	delete_option( 'woocommerce_stripe_sofort_settings' );
+	delete_option('woocommerce_stripe_settings');
+	delete_option('wc_stripe_show_styles_notice');
+	delete_option('wc_stripe_show_request_api_notice');
+	delete_option('wc_stripe_show_apple_pay_notice');
+	delete_option('wc_stripe_show_ssl_notice');
+	delete_option('wc_stripe_show_keys_notice');
+	delete_option('wc_stripe_show_alipay_notice');
+	delete_option('wc_stripe_show_bancontact_notice');
+	delete_option('wc_stripe_show_bitcoin_notice');
+	delete_option('wc_stripe_show_eps_notice');
+	delete_option('wc_stripe_show_giropay_notice');
+	delete_option('wc_stripe_show_ideal_notice');
+	delete_option('wc_stripe_show_multibanco_notice');
+	delete_option('wc_stripe_show_p24_notice');
+	delete_option('wc_stripe_show_sepa_notice');
+	delete_option('wc_stripe_show_sofort_notice');
+	delete_option('wc_stripe_version');
+	delete_option('woocommerce_stripe_bancontact_settings');
+	delete_option('woocommerce_stripe_alipay_settings');
+	delete_option('woocommerce_stripe_bitcoin_settings');
+	delete_option('woocommerce_stripe_ideal_settings');
+	delete_option('woocommerce_stripe_p24_settings');
+	delete_option('woocommerce_stripe_giropay_settings');
+	delete_option('woocommerce_stripe_sepa_settings');
+	delete_option('woocommerce_stripe_sofort_settings');
 }

includes/class-wc-gateway-stripe.php

Spacing +280 added lines, -280 removed lines

@@ -1,5 +1,5 @@ 
 <?php
-if ( ! defined( 'ABSPATH' ) ) {
+if ( ! defined('ABSPATH')) {
 	exit;
 }
 
@@ -113,9 +113,9 @@ 
 	public function __construct() {
 		$this->retry_interval = 1;
 		$this->id             = 'stripe';
-		$this->method_title   = __( 'Stripe', 'woocommerce-gateway-stripe' );
+		$this->method_title   = __('Stripe', 'woocommerce-gateway-stripe');
 		/* translators: 1) link to Stripe register page 2) link to Stripe api keys page */
-		$this->method_description = sprintf( __( 'Stripe works by adding payment fields on the checkout and then sending the details to Stripe for verification. <a href="%1$s" target="_blank">Sign up</a> for a Stripe account, and <a href="%2$s" target="_blank">get your Stripe account keys</a>.', 'woocommerce-gateway-stripe' ), 'https://dashboard.stripe.com/register', 'https://dashboard.stripe.com/account/apikeys' );
+		$this->method_description = sprintf(__('Stripe works by adding payment fields on the checkout and then sending the details to Stripe for verification. <a href="%1$s" target="_blank">Sign up</a> for a Stripe account, and <a href="%2$s" target="_blank">get your Stripe account keys</a>.', 'woocommerce-gateway-stripe'), 'https://dashboard.stripe.com/register', 'https://dashboard.stripe.com/account/apikeys');
 		$this->has_fields         = true;
 		$this->supports           = array(
 			'products',
@@ -142,42 +142,42 @@ 
 		$this->init_settings();
 
 		// Get setting values.
-		$this->title                       = $this->get_option( 'title' );
-		$this->description                 = $this->get_option( 'description' );
-		$this->enabled                     = $this->get_option( 'enabled' );
-		$this->testmode                    = 'yes' === $this->get_option( 'testmode' );
-		$this->inline_cc_form              = 'yes' === $this->get_option( 'inline_cc_form' );
-		$this->capture                     = 'yes' === $this->get_option( 'capture', 'yes' );
-		$this->statement_descriptor        = WC_Stripe_Helper::clean_statement_descriptor( $this->get_option( 'statement_descriptor' ) );
-		$this->three_d_secure              = 'yes' === $this->get_option( 'three_d_secure' );
-		$this->stripe_checkout             = 'yes' === $this->get_option( 'stripe_checkout' );
-		$this->stripe_checkout_image       = $this->get_option( 'stripe_checkout_image', '' );
-		$this->stripe_checkout_description = $this->get_option( 'stripe_checkout_description' );
-		$this->saved_cards                 = 'yes' === $this->get_option( 'saved_cards' );
-		$this->secret_key                  = $this->testmode ? $this->get_option( 'test_secret_key' ) : $this->get_option( 'secret_key' );
-		$this->publishable_key             = $this->testmode ? $this->get_option( 'test_publishable_key' ) : $this->get_option( 'publishable_key' );
-		$this->payment_request             = 'yes' === $this->get_option( 'payment_request', 'yes' );
-
-		if ( $this->stripe_checkout ) {
-			$this->order_button_text = __( 'Continue to payment', 'woocommerce-gateway-stripe' );
+		$this->title                       = $this->get_option('title');
+		$this->description                 = $this->get_option('description');
+		$this->enabled                     = $this->get_option('enabled');
+		$this->testmode                    = 'yes' === $this->get_option('testmode');
+		$this->inline_cc_form              = 'yes' === $this->get_option('inline_cc_form');
+		$this->capture                     = 'yes' === $this->get_option('capture', 'yes');
+		$this->statement_descriptor        = WC_Stripe_Helper::clean_statement_descriptor($this->get_option('statement_descriptor'));
+		$this->three_d_secure              = 'yes' === $this->get_option('three_d_secure');
+		$this->stripe_checkout             = 'yes' === $this->get_option('stripe_checkout');
+		$this->stripe_checkout_image       = $this->get_option('stripe_checkout_image', '');
+		$this->stripe_checkout_description = $this->get_option('stripe_checkout_description');
+		$this->saved_cards                 = 'yes' === $this->get_option('saved_cards');
+		$this->secret_key                  = $this->testmode ? $this->get_option('test_secret_key') : $this->get_option('secret_key');
+		$this->publishable_key             = $this->testmode ? $this->get_option('test_publishable_key') : $this->get_option('publishable_key');
+		$this->payment_request             = 'yes' === $this->get_option('payment_request', 'yes');
+
+		if ($this->stripe_checkout) {
+			$this->order_button_text = __('Continue to payment', 'woocommerce-gateway-stripe');
 		}
 
-		WC_Stripe_API::set_secret_key( $this->secret_key );
+		WC_Stripe_API::set_secret_key($this->secret_key);
 
 		// Hooks.
-		add_action( 'wp_enqueue_scripts', array( $this, 'payment_scripts' ) );
-		add_action( 'admin_enqueue_scripts', array( $this, 'admin_scripts' ) );
-		add_action( 'woocommerce_update_options_payment_gateways_' . $this->id, array( $this, 'process_admin_options' ) );
-		add_action( 'woocommerce_admin_order_totals_after_total', array( $this, 'display_order_fee' ) );
-		add_action( 'woocommerce_admin_order_totals_after_total', array( $this, 'display_order_payout' ), 20 );
-		add_action( 'woocommerce_customer_save_address', array( $this, 'show_update_card_notice' ), 10, 2 );
-		add_action( 'woocommerce_receipt_stripe', array( $this, 'stripe_checkout_receipt_page' ) );
-		add_action( 'woocommerce_api_' . strtolower( get_class( $this ) ), array( $this, 'stripe_checkout_return_handler' ) );
-
-		if ( WC_Stripe_Helper::is_pre_orders_exists() ) {
+		add_action('wp_enqueue_scripts', array($this, 'payment_scripts'));
+		add_action('admin_enqueue_scripts', array($this, 'admin_scripts'));
+		add_action('woocommerce_update_options_payment_gateways_' . $this->id, array($this, 'process_admin_options'));
+		add_action('woocommerce_admin_order_totals_after_total', array($this, 'display_order_fee'));
+		add_action('woocommerce_admin_order_totals_after_total', array($this, 'display_order_payout'), 20);
+		add_action('woocommerce_customer_save_address', array($this, 'show_update_card_notice'), 10, 2);
+		add_action('woocommerce_receipt_stripe', array($this, 'stripe_checkout_receipt_page'));
+		add_action('woocommerce_api_' . strtolower(get_class($this)), array($this, 'stripe_checkout_return_handler'));
+
+		if (WC_Stripe_Helper::is_pre_orders_exists()) {
 			$this->pre_orders = new WC_Stripe_Pre_Orders_Compat();
 
-			add_action( 'wc_pre_orders_process_pre_order_completion_payment_' . $this->id, array( $this->pre_orders, 'process_pre_order_release_payment' ) );
+			add_action('wc_pre_orders_process_pre_order_completion_payment_' . $this->id, array($this->pre_orders, 'process_pre_order_release_payment'));
 		}
 	}
 
@@ -188,7 +188,7 @@ 
 	 * @return bool
 	 */
 	public function are_keys_set() {
-		if ( empty( $this->secret_key ) || empty( $this->publishable_key ) ) {
+		if (empty($this->secret_key) || empty($this->publishable_key)) {
 			return false;
 		}
 
@@ -201,7 +201,7 @@ 
 	 * @since 4.0.2
 	 */
 	public function is_available() {
-		if ( is_add_payment_method_page() && ! $this->saved_cards ) {
+		if (is_add_payment_method_page() && ! $this->saved_cards) {
 			return false;
 		}
 
@@ -215,13 +215,13 @@ 
 	 * @param int $user_id
 	 * @param array $load_address
 	 */
-	public function show_update_card_notice( $user_id, $load_address ) {
-		if ( ! $this->saved_cards || ! WC_Stripe_Payment_Tokens::customer_has_saved_methods( $user_id ) || 'billing' !== $load_address ) {
+	public function show_update_card_notice($user_id, $load_address) {
+		if ( ! $this->saved_cards || ! WC_Stripe_Payment_Tokens::customer_has_saved_methods($user_id) || 'billing' !== $load_address) {
 			return;
 		}
 
 		/* translators: 1) Opening anchor tag 2) closing anchor tag */
-		wc_add_notice( sprintf( __( 'If your billing address has been changed for saved payment methods, be sure to remove any %1$ssaved payment methods%2$s on file and re-add them.', 'woocommerce-gateway-stripe' ), '<a href="' . esc_url( wc_get_endpoint_url( 'payment-methods' ) ) . '" class="wc-stripe-update-card-notice" style="text-decoration:underline;">', '</a>' ), 'notice' );
+		wc_add_notice(sprintf(__('If your billing address has been changed for saved payment methods, be sure to remove any %1$ssaved payment methods%2$s on file and re-add them.', 'woocommerce-gateway-stripe'), '<a href="' . esc_url(wc_get_endpoint_url('payment-methods')) . '" class="wc-stripe-update-card-notice" style="text-decoration:underline;">', '</a>'), 'notice');
 	}
 
 	/**
@@ -236,24 +236,24 @@ 
 
 		$icons_str = '';
 
-		$icons_str .= isset( $icons['visa'] ) ? $icons['visa'] : '';
-		$icons_str .= isset( $icons['amex'] ) ? $icons['amex'] : '';
-		$icons_str .= isset( $icons['mastercard'] ) ? $icons['mastercard'] : '';
+		$icons_str .= isset($icons['visa']) ? $icons['visa'] : '';
+		$icons_str .= isset($icons['amex']) ? $icons['amex'] : '';
+		$icons_str .= isset($icons['mastercard']) ? $icons['mastercard'] : '';
 
-		if ( 'USD' === get_woocommerce_currency() ) {
-			$icons_str .= isset( $icons['discover'] ) ? $icons['discover'] : '';
-			$icons_str .= isset( $icons['jcb'] ) ? $icons['jcb'] : '';
-			$icons_str .= isset( $icons['diners'] ) ? $icons['diners'] : '';
+		if ('USD' === get_woocommerce_currency()) {
+			$icons_str .= isset($icons['discover']) ? $icons['discover'] : '';
+			$icons_str .= isset($icons['jcb']) ? $icons['jcb'] : '';
+			$icons_str .= isset($icons['diners']) ? $icons['diners'] : '';
 		}
 
-		return apply_filters( 'woocommerce_gateway_icon', $icons_str, $this->id );
+		return apply_filters('woocommerce_gateway_icon', $icons_str, $this->id);
 	}
 
 	/**
 	 * Initialise Gateway Settings Form Fields
 	 */
 	public function init_form_fields() {
-		$this->form_fields = require( dirname( __FILE__ ) . '/admin/stripe-settings.php' );
+		$this->form_fields = require(dirname(__FILE__) . '/admin/stripe-settings.php');
 	}
 
 	/**
@@ -261,34 +261,34 @@ 
 	 */
 	public function payment_fields() {
 		$user                 = wp_get_current_user();
-		$display_tokenization = $this->supports( 'tokenization' ) && is_checkout() && $this->saved_cards;
+		$display_tokenization = $this->supports('tokenization') && is_checkout() && $this->saved_cards;
 		$total                = WC()->cart->total;
 		$user_email           = '';
 		$description          = $this->get_description();
-		$description          = ! empty( $description ) ? $description : '';
+		$description          = ! empty($description) ? $description : '';
 		$firstname            = '';
 		$lastname             = '';
 
 		// If paying from order, we need to get total from order not cart.
-		if ( isset( $_GET['pay_for_order'] ) && ! empty( $_GET['key'] ) ) {
-			$order      = wc_get_order( wc_get_order_id_by_order_key( wc_clean( $_GET['key'] ) ) );
+		if (isset($_GET['pay_for_order']) && ! empty($_GET['key'])) {
+			$order      = wc_get_order(wc_get_order_id_by_order_key(wc_clean($_GET['key'])));
 			$total      = $order->get_total();
-			$user_email = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_email : $order->get_billing_email();
+			$user_email = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_email : $order->get_billing_email();
 		} else {
-			if ( $user->ID ) {
-				$user_email = get_user_meta( $user->ID, 'billing_email', true );
+			if ($user->ID) {
+				$user_email = get_user_meta($user->ID, 'billing_email', true);
 				$user_email = $user_email ? $user_email : $user->user_email;
 			}
 		}
 
-		if ( is_add_payment_method_page() ) {
-			$pay_button_text = __( 'Add Card', 'woocommerce-gateway-stripe' );
+		if (is_add_payment_method_page()) {
+			$pay_button_text = __('Add Card', 'woocommerce-gateway-stripe');
 			$total           = '';
 			$firstname       = $user->user_firstname;
 			$lastname        = $user->user_lastname;
 
-		} elseif ( function_exists( 'wcs_order_contains_subscription' ) && isset( $_GET['change_payment_method'] ) ) {
-			$pay_button_text = __( 'Change Payment Method', 'woocommerce-gateway-stripe' );
+		} elseif (function_exists('wcs_order_contains_subscription') && isset($_GET['change_payment_method'])) {
+			$pay_button_text = __('Change Payment Method', 'woocommerce-gateway-stripe');
 			$total           = '';
 		} else {
 			$pay_button_text = '';
@@ -298,49 +298,49 @@ 
 
 		echo '<div
 			id="stripe-payment-data"
-			data-panel-label="' . esc_attr( $pay_button_text ) . '"
-			data-description="' . esc_attr( wp_strip_all_tags( $this->stripe_checkout_description ) ) . '"
-			data-email="' . esc_attr( $user_email ) . '"
-			data-verify-zip="' . esc_attr( apply_filters( 'wc_stripe_checkout_verify_zip', false ) ? 'true' : 'false' ) . '"
-			data-billing-address="' . esc_attr( apply_filters( 'wc_stripe_checkout_require_billing_address', false ) ? 'true' : 'false' ) . '"
-			data-shipping-address="' . esc_attr( apply_filters( 'wc_stripe_checkout_require_shipping_address', false ) ? 'true' : 'false' ) . '" 
-			data-amount="' . esc_attr( WC_Stripe_Helper::get_stripe_amount( $total ) ) . '"
-			data-name="' . esc_attr( $this->statement_descriptor ) . '"
-			data-full-name="' . esc_attr( $firstname . ' ' . $lastname ) . '"
-			data-currency="' . esc_attr( strtolower( get_woocommerce_currency() ) ) . '"
-			data-image="' . esc_attr( $this->stripe_checkout_image ) . '"
-			data-locale="' . esc_attr( apply_filters( 'wc_stripe_checkout_locale', $this->get_locale() ) ) . '"
-			data-three-d-secure="' . esc_attr( $this->three_d_secure ? 'true' : 'false' ) . '"
-			data-allow-remember-me="' . esc_attr( apply_filters( 'wc_stripe_allow_remember_me', true ) ? 'true' : 'false' ) . '">';
-
-		if ( $this->testmode ) {
+			data-panel-label="' . esc_attr($pay_button_text) . '"
+			data-description="' . esc_attr(wp_strip_all_tags($this->stripe_checkout_description)) . '"
+			data-email="' . esc_attr($user_email) . '"
+			data-verify-zip="' . esc_attr(apply_filters('wc_stripe_checkout_verify_zip', false) ? 'true' : 'false') . '"
+			data-billing-address="' . esc_attr(apply_filters('wc_stripe_checkout_require_billing_address', false) ? 'true' : 'false') . '"
+			data-shipping-address="' . esc_attr(apply_filters('wc_stripe_checkout_require_shipping_address', false) ? 'true' : 'false') . '" 
+			data-amount="' . esc_attr(WC_Stripe_Helper::get_stripe_amount($total)) . '"
+			data-name="' . esc_attr($this->statement_descriptor) . '"
+			data-full-name="' . esc_attr($firstname . ' ' . $lastname) . '"
+			data-currency="' . esc_attr(strtolower(get_woocommerce_currency())) . '"
+			data-image="' . esc_attr($this->stripe_checkout_image) . '"
+			data-locale="' . esc_attr(apply_filters('wc_stripe_checkout_locale', $this->get_locale())) . '"
+			data-three-d-secure="' . esc_attr($this->three_d_secure ? 'true' : 'false') . '"
+			data-allow-remember-me="' . esc_attr(apply_filters('wc_stripe_allow_remember_me', true) ? 'true' : 'false') . '">';
+
+		if ($this->testmode) {
 			/* translators: link to Stripe testing page */
-			$description .= ' ' . sprintf( __( 'TEST MODE ENABLED. In test mode, you can use the card number 4242424242424242 with any CVC and a valid expiration date or check the <a href="%s" target="_blank">Testing Stripe documentation</a> for more card numbers.', 'woocommerce-gateway-stripe' ), 'https://stripe.com/docs/testing' );
+			$description .= ' ' . sprintf(__('TEST MODE ENABLED. In test mode, you can use the card number 4242424242424242 with any CVC and a valid expiration date or check the <a href="%s" target="_blank">Testing Stripe documentation</a> for more card numbers.', 'woocommerce-gateway-stripe'), 'https://stripe.com/docs/testing');
 		}
 
-		$description = trim( $description );
+		$description = trim($description);
 
-		echo apply_filters( 'wc_stripe_description', wpautop( wp_kses_post( $description ) ), $this->id );
+		echo apply_filters('wc_stripe_description', wpautop(wp_kses_post($description)), $this->id);
 
-		if ( $display_tokenization ) {
+		if ($display_tokenization) {
 			$this->tokenization_script();
 			$this->saved_payment_methods();
 		}
 
-		if ( ! $this->stripe_checkout ) {
+		if ( ! $this->stripe_checkout) {
 			$this->elements_form();
 		}
 
-		if ( apply_filters( 'wc_stripe_display_save_payment_method_checkbox', $display_tokenization ) && ! is_add_payment_method_page() && ! isset( $_GET['change_payment_method'] ) ) {
+		if (apply_filters('wc_stripe_display_save_payment_method_checkbox', $display_tokenization) && ! is_add_payment_method_page() && ! isset($_GET['change_payment_method'])) {
 
-			if ( ! $this->stripe_checkout ) {
+			if ( ! $this->stripe_checkout) {
 				$this->save_payment_method_checkbox();
-			} elseif ( $this->stripe_checkout && isset( $_GET['pay_for_order'] ) && ! empty( $_GET['key'] ) ) {
+			} elseif ($this->stripe_checkout && isset($_GET['pay_for_order']) && ! empty($_GET['key'])) {
 				$this->save_payment_method_checkbox();
 			}
 		}
 
-		do_action( 'wc_stripe_cards_payment_fields', $this->id );
+		do_action('wc_stripe_cards_payment_fields', $this->id);
 
 		echo '</div>';
 
@@ -355,12 +355,12 @@ 
 	 */
 	public function elements_form() {
 		?>
-		<fieldset id="wc-<?php echo esc_attr( $this->id ); ?>-cc-form" class="wc-credit-card-form wc-payment-form" style="background:transparent;">
-			<?php do_action( 'woocommerce_credit_card_form_start', $this->id ); ?>
+		<fieldset id="wc-<?php echo esc_attr($this->id); ?>-cc-form" class="wc-credit-card-form wc-payment-form" style="background:transparent;">
+			<?php do_action('woocommerce_credit_card_form_start', $this->id); ?>
 
-			<?php if ( $this->inline_cc_form ) { ?>
+			<?php if ($this->inline_cc_form) { ?>
 				<label for="card-element">
-					<?php esc_html_e( 'Credit or debit card', 'woocommerce-gateway-stripe' ); ?>
+					<?php esc_html_e('Credit or debit card', 'woocommerce-gateway-stripe'); ?>
 				</label>
 
 				<div id="stripe-card-element" class="wc-stripe-elements-field">
@@ -368,7 +368,7 @@ 
 				</div>
 			<?php } else { ?>
 				<div class="form-row form-row-wide">
-					<label for="stripe-card-element"><?php esc_html_e( 'Card Number', 'woocommerce-gateway-stripe' ); ?> <span class="required">*</span></label>
+					<label for="stripe-card-element"><?php esc_html_e('Card Number', 'woocommerce-gateway-stripe'); ?> <span class="required">*</span></label>
 					<div class="stripe-card-group">
 						<div id="stripe-card-element" class="wc-stripe-elements-field">
 						<!-- a Stripe Element will be inserted here. -->
@@ -379,7 +379,7 @@ 
 				</div>
 
 				<div class="form-row form-row-first">
-					<label for="stripe-exp-element"><?php esc_html_e( 'Expiry Date', 'woocommerce-gateway-stripe' ); ?> <span class="required">*</span></label>
+					<label for="stripe-exp-element"><?php esc_html_e('Expiry Date', 'woocommerce-gateway-stripe'); ?> <span class="required">*</span></label>
 
 					<div id="stripe-exp-element" class="wc-stripe-elements-field">
 					<!-- a Stripe Element will be inserted here. -->
@@ -387,7 +387,7 @@ 
 				</div>
 
 				<div class="form-row form-row-last">
-					<label for="stripe-cvc-element"><?php esc_html_e( 'Card Code (CVC)', 'woocommerce-gateway-stripe' ); ?> <span class="required">*</span></label>
+					<label for="stripe-cvc-element"><?php esc_html_e('Card Code (CVC)', 'woocommerce-gateway-stripe'); ?> <span class="required">*</span></label>
 				<div id="stripe-cvc-element" class="wc-stripe-elements-field">
 				<!-- a Stripe Element will be inserted here. -->
 				</div>
@@ -398,7 +398,7 @@ 
 			<!-- Used to display form errors -->
 			<div class="stripe-source-errors" role="alert"></div>
 			<br />
-			<?php do_action( 'woocommerce_credit_card_form_end', $this->id ); ?>
+			<?php do_action('woocommerce_credit_card_form_end', $this->id); ?>
 			<div class="clear"></div>
 		</fieldset>
 		<?php
@@ -411,13 +411,13 @@ 
 	 * @version 3.1.0
 	 */
 	public function admin_scripts() {
-		if ( 'woocommerce_page_wc-settings' !== get_current_screen()->id ) {
+		if ('woocommerce_page_wc-settings' !== get_current_screen()->id) {
 			return;
 		}
 
-		$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
+		$suffix = defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ? '' : '.min';
 
-		wp_enqueue_script( 'woocommerce_stripe_admin', plugins_url( 'assets/js/stripe-admin' . $suffix . '.js', WC_STRIPE_MAIN_FILE ), array(), WC_STRIPE_VERSION, true );
+		wp_enqueue_script('woocommerce_stripe_admin', plugins_url('assets/js/stripe-admin' . $suffix . '.js', WC_STRIPE_MAIN_FILE), array(), WC_STRIPE_VERSION, true);
 	}
 
 	/**
@@ -429,101 +429,101 @@ 
 	 * @version 4.0.0
 	 */
 	public function payment_scripts() {
-		if ( ! is_cart() && ! is_checkout() && ! isset( $_GET['pay_for_order'] ) && ! is_add_payment_method_page() && ! isset( $_GET['change_payment_method'] ) ) {
+		if ( ! is_cart() && ! is_checkout() && ! isset($_GET['pay_for_order']) && ! is_add_payment_method_page() && ! isset($_GET['change_payment_method'])) {
 			return;
 		}
 
 		// If Stripe is not enabled bail.
-		if ( 'no' === $this->enabled ) {
+		if ('no' === $this->enabled) {
 			return;
 		}
 
 		// If keys are not set bail.
-		if ( ! $this->are_keys_set() ) {
-			WC_Stripe_Logger::log( 'Keys are not set correctly.' );
+		if ( ! $this->are_keys_set()) {
+			WC_Stripe_Logger::log('Keys are not set correctly.');
 			return;
 		}
 
 		// If no SSL bail.
-		if ( ! $this->testmode && ! is_ssl() ) {
-			WC_Stripe_Logger::log( 'Stripe live mode requires SSL.' );
+		if ( ! $this->testmode && ! is_ssl()) {
+			WC_Stripe_Logger::log('Stripe live mode requires SSL.');
 		}
 
 		$current_theme = wp_get_theme();
 
-		$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
+		$suffix = defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ? '' : '.min';
 
-		wp_register_style( 'stripe_styles', plugins_url( 'assets/css/stripe-styles.css', WC_STRIPE_MAIN_FILE ), array(), WC_STRIPE_VERSION );
-		wp_enqueue_style( 'stripe_styles' );	
+		wp_register_style('stripe_styles', plugins_url('assets/css/stripe-styles.css', WC_STRIPE_MAIN_FILE), array(), WC_STRIPE_VERSION);
+		wp_enqueue_style('stripe_styles');	
 
-		wp_register_script( 'stripe_checkout', 'https://checkout.stripe.com/checkout.js', '', WC_STRIPE_VERSION, true );
-		wp_register_script( 'stripe', 'https://js.stripe.com/v3/', '', '3.0', true );
-		wp_register_script( 'woocommerce_stripe', plugins_url( 'assets/js/stripe' . $suffix . '.js', WC_STRIPE_MAIN_FILE ), array( 'jquery-payment', 'stripe' ), WC_STRIPE_VERSION, true );
+		wp_register_script('stripe_checkout', 'https://checkout.stripe.com/checkout.js', '', WC_STRIPE_VERSION, true);
+		wp_register_script('stripe', 'https://js.stripe.com/v3/', '', '3.0', true);
+		wp_register_script('woocommerce_stripe', plugins_url('assets/js/stripe' . $suffix . '.js', WC_STRIPE_MAIN_FILE), array('jquery-payment', 'stripe'), WC_STRIPE_VERSION, true);
 
 		$stripe_params = array(
 			'key'                  => $this->publishable_key,
-			'i18n_terms'           => __( 'Please accept the terms and conditions first', 'woocommerce-gateway-stripe' ),
-			'i18n_required_fields' => __( 'Please fill in required checkout fields first', 'woocommerce-gateway-stripe' ),
+			'i18n_terms'           => __('Please accept the terms and conditions first', 'woocommerce-gateway-stripe'),
+			'i18n_required_fields' => __('Please fill in required checkout fields first', 'woocommerce-gateway-stripe'),
 		);
 
 		// If we're on the pay page we need to pass stripe.js the address of the order.
-		if ( isset( $_GET['pay_for_order'] ) && 'true' === $_GET['pay_for_order'] ) {
-			$order_id = wc_get_order_id_by_order_key( urldecode( $_GET['key'] ) );
-			$order    = wc_get_order( $order_id );
-
-			if ( is_a( $order, 'WC_Order' ) ) {
-				$stripe_params['billing_first_name'] = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_first_name : $order->get_billing_first_name();
-				$stripe_params['billing_last_name']  = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_last_name : $order->get_billing_last_name();
-				$stripe_params['billing_address_1']  = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_address_1 : $order->get_billing_address_1();
-				$stripe_params['billing_address_2']  = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_address_2 : $order->get_billing_address_2();
-				$stripe_params['billing_state']      = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_state : $order->get_billing_state();
-				$stripe_params['billing_city']       = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_city : $order->get_billing_city();
-				$stripe_params['billing_postcode']   = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_postcode : $order->get_billing_postcode();
-				$stripe_params['billing_country']    = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_country : $order->get_billing_country();
+		if (isset($_GET['pay_for_order']) && 'true' === $_GET['pay_for_order']) {
+			$order_id = wc_get_order_id_by_order_key(urldecode($_GET['key']));
+			$order    = wc_get_order($order_id);
+
+			if (is_a($order, 'WC_Order')) {
+				$stripe_params['billing_first_name'] = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_first_name : $order->get_billing_first_name();
+				$stripe_params['billing_last_name']  = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_last_name : $order->get_billing_last_name();
+				$stripe_params['billing_address_1']  = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_address_1 : $order->get_billing_address_1();
+				$stripe_params['billing_address_2']  = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_address_2 : $order->get_billing_address_2();
+				$stripe_params['billing_state']      = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_state : $order->get_billing_state();
+				$stripe_params['billing_city']       = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_city : $order->get_billing_city();
+				$stripe_params['billing_postcode']   = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_postcode : $order->get_billing_postcode();
+				$stripe_params['billing_country']    = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_country : $order->get_billing_country();
 			}
 		}
 
-		$stripe_params['no_prepaid_card_msg']                     = __( 'Sorry, we\'re not accepting prepaid cards at this time. Your credit card has not been charged. Please try with alternative payment method.', 'woocommerce-gateway-stripe' );
-		$stripe_params['no_sepa_owner_msg']                       = __( 'Please enter your IBAN account name.', 'woocommerce-gateway-stripe' );
-		$stripe_params['no_sepa_iban_msg']                        = __( 'Please enter your IBAN account number.', 'woocommerce-gateway-stripe' );
-		$stripe_params['sepa_mandate_notification']               = apply_filters( 'wc_stripe_sepa_mandate_notification', 'email' );
-		$stripe_params['allow_prepaid_card']                      = apply_filters( 'wc_stripe_allow_prepaid_card', true ) ? 'yes' : 'no';
+		$stripe_params['no_prepaid_card_msg']                     = __('Sorry, we\'re not accepting prepaid cards at this time. Your credit card has not been charged. Please try with alternative payment method.', 'woocommerce-gateway-stripe');
+		$stripe_params['no_sepa_owner_msg']                       = __('Please enter your IBAN account name.', 'woocommerce-gateway-stripe');
+		$stripe_params['no_sepa_iban_msg']                        = __('Please enter your IBAN account number.', 'woocommerce-gateway-stripe');
+		$stripe_params['sepa_mandate_notification']               = apply_filters('wc_stripe_sepa_mandate_notification', 'email');
+		$stripe_params['allow_prepaid_card']                      = apply_filters('wc_stripe_allow_prepaid_card', true) ? 'yes' : 'no';
 		$stripe_params['inline_cc_form']                          = $this->inline_cc_form ? 'yes' : 'no';
-		$stripe_params['stripe_checkout_require_billing_address'] = apply_filters( 'wc_stripe_checkout_require_billing_address', false ) ? 'yes' : 'no';
-		$stripe_params['is_checkout']                             = ( is_checkout() && empty( $_GET['pay_for_order'] ) ) ? 'yes' : 'no';
+		$stripe_params['stripe_checkout_require_billing_address'] = apply_filters('wc_stripe_checkout_require_billing_address', false) ? 'yes' : 'no';
+		$stripe_params['is_checkout']                             = (is_checkout() && empty($_GET['pay_for_order'])) ? 'yes' : 'no';
 		$stripe_params['return_url']                              = $this->get_stripe_return_url();
-		$stripe_params['ajaxurl']                                 = WC_AJAX::get_endpoint( '%%endpoint%%' );
-		$stripe_params['stripe_nonce']                            = wp_create_nonce( '_wc_stripe_nonce' );
+		$stripe_params['ajaxurl']                                 = WC_AJAX::get_endpoint('%%endpoint%%');
+		$stripe_params['stripe_nonce']                            = wp_create_nonce('_wc_stripe_nonce');
 		$stripe_params['statement_descriptor']                    = $this->statement_descriptor;
-		$stripe_params['elements_options']                        = apply_filters( 'wc_stripe_elements_options', array() );
+		$stripe_params['elements_options']                        = apply_filters('wc_stripe_elements_options', array());
 		$stripe_params['sepa_elements_options']                   = apply_filters(
 			'wc_stripe_sepa_elements_options',
 			array(
-				'supportedCountries' => array( 'SEPA' ),
+				'supportedCountries' => array('SEPA'),
 				'placeholderCountry' => WC()->countries->get_base_country(),
-				'style'              => array( 'base' => array( 'fontSize' => '15px' ) ),
+				'style'              => array('base' => array('fontSize' => '15px')),
 			)
 		);
-		$stripe_params['invalid_owner_name']                      = __( 'Billing First Name and Last Name are required.', 'woocommerce-gateway-stripe' );
+		$stripe_params['invalid_owner_name']                      = __('Billing First Name and Last Name are required.', 'woocommerce-gateway-stripe');
 		$stripe_params['is_stripe_checkout']                      = $this->stripe_checkout ? 'yes' : 'no';
-		$stripe_params['is_change_payment_page']                  = isset( $_GET['change_payment_method'] ) ? 'yes' : 'no';
-		$stripe_params['is_add_payment_page']                     = is_wc_endpoint_url( 'add-payment-method' ) ? 'yes' : 'no';
-		$stripe_params['is_pay_for_order_page']                   = is_wc_endpoint_url( 'order-pay' ) ? 'yes' : 'no';
-		$stripe_params['elements_styling']                        = apply_filters( 'wc_stripe_elements_styling', false );
-		$stripe_params['elements_classes']                        = apply_filters( 'wc_stripe_elements_classes', false );
+		$stripe_params['is_change_payment_page']                  = isset($_GET['change_payment_method']) ? 'yes' : 'no';
+		$stripe_params['is_add_payment_page']                     = is_wc_endpoint_url('add-payment-method') ? 'yes' : 'no';
+		$stripe_params['is_pay_for_order_page']                   = is_wc_endpoint_url('order-pay') ? 'yes' : 'no';
+		$stripe_params['elements_styling']                        = apply_filters('wc_stripe_elements_styling', false);
+		$stripe_params['elements_classes']                        = apply_filters('wc_stripe_elements_classes', false);
 
 		// merge localized messages to be use in JS
-		$stripe_params = array_merge( $stripe_params, WC_Stripe_Helper::get_localized_messages() );
+		$stripe_params = array_merge($stripe_params, WC_Stripe_Helper::get_localized_messages());
 
-		wp_localize_script( 'woocommerce_stripe', 'wc_stripe_params', apply_filters( 'wc_stripe_params', $stripe_params ) );
-		wp_localize_script( 'woocommerce_stripe_checkout', 'wc_stripe_params', apply_filters( 'wc_stripe_params', $stripe_params ) );
+		wp_localize_script('woocommerce_stripe', 'wc_stripe_params', apply_filters('wc_stripe_params', $stripe_params));
+		wp_localize_script('woocommerce_stripe_checkout', 'wc_stripe_params', apply_filters('wc_stripe_params', $stripe_params));
 
-		if ( $this->stripe_checkout ) {
-			wp_enqueue_script( 'stripe_checkout' );
+		if ($this->stripe_checkout) {
+			wp_enqueue_script('stripe_checkout');
 		}
 
 		$this->tokenization_script();
-		wp_enqueue_script( 'woocommerce_stripe' );
+		wp_enqueue_script('woocommerce_stripe');
 	}
 
 	/**
@@ -531,70 +531,70 @@ 
 	 *
 	 * @since 4.1.0
 	 */
-	public function stripe_checkout_receipt_page( $order_id ) {
-		if ( ! $this->stripe_checkout ) {
+	public function stripe_checkout_receipt_page($order_id) {
+		if ( ! $this->stripe_checkout) {
 			return;
 		}
 
 		$user                 = wp_get_current_user();
 		$total                = WC()->cart->total;
 		$user_email           = '';
-		$display_tokenization = $this->supports( 'tokenization' ) && $this->saved_cards;
+		$display_tokenization = $this->supports('tokenization') && $this->saved_cards;
 
 		// If paying from order, we need to get total from order not cart.
-		if ( ! empty( $_GET['key'] ) ) {
-			$order      = wc_get_order( wc_get_order_id_by_order_key( wc_clean( $_GET['key'] ) ) );
+		if ( ! empty($_GET['key'])) {
+			$order      = wc_get_order(wc_get_order_id_by_order_key(wc_clean($_GET['key'])));
 			$total      = $order->get_total();
-			$user_email = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_email : $order->get_billing_email();
+			$user_email = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_email : $order->get_billing_email();
 		} else {
-			if ( $user->ID ) {
-				$user_email = get_user_meta( $user->ID, 'billing_email', true );
+			if ($user->ID) {
+				$user_email = get_user_meta($user->ID, 'billing_email', true);
 				$user_email = $user_email ? $user_email : $user->user_email;
 			}
 		}
 
 		ob_start();
 
-		do_action( 'wc_stripe_checkout_receipt_page_before_form' );
+		do_action('wc_stripe_checkout_receipt_page_before_form');
 
-		echo '<form method="post" class="woocommerce-checkout" action="' . WC()->api_request_url( get_class( $this ) ) . '">';
+		echo '<form method="post" class="woocommerce-checkout" action="' . WC()->api_request_url(get_class($this)) . '">';
 		echo '<div
 			id="stripe-payment-data"
-			data-panel-label="' . esc_attr( apply_filters( 'wc_stripe_checkout_label', '' ) ) . '"
-			data-description="' . esc_attr( wp_strip_all_tags( $this->stripe_checkout_description ) ) . '"
-			data-email="' . esc_attr( $user_email ) . '"
-			data-verify-zip="' . esc_attr( apply_filters( 'wc_stripe_checkout_verify_zip', false ) ? 'true' : 'false' ) . '"
-			data-billing-address="' . esc_attr( apply_filters( 'wc_stripe_checkout_require_billing_address', false ) ? 'true' : 'false' ) . '"
-			data-shipping-address="' . esc_attr( apply_filters( 'wc_stripe_checkout_require_shipping_address', false ) ? 'true' : 'false' ) . '" 
-			data-amount="' . esc_attr( WC_Stripe_Helper::get_stripe_amount( $total ) ) . '"
-			data-name="' . esc_attr( $this->statement_descriptor ) . '"
-			data-currency="' . esc_attr( strtolower( get_woocommerce_currency() ) ) . '"
-			data-image="' . esc_attr( $this->stripe_checkout_image ) . '"
-			data-locale="' . esc_attr( apply_filters( 'wc_stripe_checkout_locale', $this->get_locale() ) ) . '"
-			data-three-d-secure="' . esc_attr( $this->three_d_secure ? 'true' : 'false' ) . '"
-			data-allow-remember-me="' . esc_attr( apply_filters( 'wc_stripe_allow_remember_me', true ) ? 'true' : 'false' ) . '">';
-		echo '<input type="hidden" name="order_id" value="' . esc_attr( $order_id ) . '" />';
+			data-panel-label="' . esc_attr(apply_filters('wc_stripe_checkout_label', '')) . '"
+			data-description="' . esc_attr(wp_strip_all_tags($this->stripe_checkout_description)) . '"
+			data-email="' . esc_attr($user_email) . '"
+			data-verify-zip="' . esc_attr(apply_filters('wc_stripe_checkout_verify_zip', false) ? 'true' : 'false') . '"
+			data-billing-address="' . esc_attr(apply_filters('wc_stripe_checkout_require_billing_address', false) ? 'true' : 'false') . '"
+			data-shipping-address="' . esc_attr(apply_filters('wc_stripe_checkout_require_shipping_address', false) ? 'true' : 'false') . '" 
+			data-amount="' . esc_attr(WC_Stripe_Helper::get_stripe_amount($total)) . '"
+			data-name="' . esc_attr($this->statement_descriptor) . '"
+			data-currency="' . esc_attr(strtolower(get_woocommerce_currency())) . '"
+			data-image="' . esc_attr($this->stripe_checkout_image) . '"
+			data-locale="' . esc_attr(apply_filters('wc_stripe_checkout_locale', $this->get_locale())) . '"
+			data-three-d-secure="' . esc_attr($this->three_d_secure ? 'true' : 'false') . '"
+			data-allow-remember-me="' . esc_attr(apply_filters('wc_stripe_allow_remember_me', true) ? 'true' : 'false') . '">';
+		echo '<input type="hidden" name="order_id" value="' . esc_attr($order_id) . '" />';
 		echo '<input type="hidden" name="stripe_checkout_order" value="yes" />';
 
 		if (
-			apply_filters( 'wc_stripe_display_save_payment_method_checkbox', $display_tokenization ) &&
-			( ! function_exists( 'wcs_order_contains_subscription' ) || ( function_exists( 'wcs_order_contains_subscription' ) && ! WC_Subscriptions_Cart::cart_contains_subscription() ) ) &&
-			( ! WC_Stripe_Helper::is_pre_orders_exists() || ( WC_Stripe_Helper::is_pre_orders_exists() && ! $this->pre_orders->is_pre_order( $order_id ) ) )
+			apply_filters('wc_stripe_display_save_payment_method_checkbox', $display_tokenization) &&
+			( ! function_exists('wcs_order_contains_subscription') || (function_exists('wcs_order_contains_subscription') && ! WC_Subscriptions_Cart::cart_contains_subscription())) &&
+			( ! WC_Stripe_Helper::is_pre_orders_exists() || (WC_Stripe_Helper::is_pre_orders_exists() && ! $this->pre_orders->is_pre_order($order_id)))
 		) {
 			$this->save_payment_method_checkbox();
 		}
 
-		wp_nonce_field( 'stripe-checkout-process', 'stripe_checkout_process_nonce' );
+		wp_nonce_field('stripe-checkout-process', 'stripe_checkout_process_nonce');
 
-		do_action( 'wc_stripe_checkout_receipt_page_before_form_submit' );
+		do_action('wc_stripe_checkout_receipt_page_before_form_submit');
 
-		echo '<button type="submit" class="wc-stripe-checkout-button">' . __( 'Place Order', 'woocommerce-gateway-stripe' ) . '</button>';
+		echo '<button type="submit" class="wc-stripe-checkout-button">' . __('Place Order', 'woocommerce-gateway-stripe') . '</button>';
 
-		do_action( 'wc_stripe_checkout_receipt_page_after_form_submit' );
+		do_action('wc_stripe_checkout_receipt_page_after_form_submit');
 
 		echo '</form>';
 
-		do_action( 'wc_stripe_checkout_receipt_page_after_form' );
+		do_action('wc_stripe_checkout_receipt_page_after_form');
 
 		echo '</div>';
 
@@ -607,32 +607,32 @@ 
 	 * @since 4.1.0
 	 */
 	public function stripe_checkout_return_handler() {
-		if ( ! $this->stripe_checkout ) {
+		if ( ! $this->stripe_checkout) {
 			return;
 		}
 
-		if ( ! wp_verify_nonce( $_POST['stripe_checkout_process_nonce'], 'stripe-checkout-process' ) ) {
+		if ( ! wp_verify_nonce($_POST['stripe_checkout_process_nonce'], 'stripe-checkout-process')) {
 			return;
 		}
 
-		$order_id = wc_clean( $_POST['order_id'] );
-		$order    = wc_get_order( $order_id );
+		$order_id = wc_clean($_POST['order_id']);
+		$order    = wc_get_order($order_id);
 
-		do_action( 'wc_stripe_checkout_return_handler', $order );
+		do_action('wc_stripe_checkout_return_handler', $order);
 
-		if ( WC_Stripe_Helper::is_pre_orders_exists() && $this->pre_orders->is_pre_order( $order_id ) && WC_Pre_Orders_Order::order_requires_payment_tokenization( $order_id ) ) {
-			$result = $this->pre_orders->process_pre_order( $order_id );
+		if (WC_Stripe_Helper::is_pre_orders_exists() && $this->pre_orders->is_pre_order($order_id) && WC_Pre_Orders_Order::order_requires_payment_tokenization($order_id)) {
+			$result = $this->pre_orders->process_pre_order($order_id);
 		} else {
-			$result = $this->process_payment( $order_id );
+			$result = $this->process_payment($order_id);
 		}
 
-		if ( 'success' === $result['result'] ) {
-			wp_redirect( $result['redirect'] );
+		if ('success' === $result['result']) {
+			wp_redirect($result['redirect']);
 			exit;
 		}
 
 		// Redirects back to pay order page.
-		wp_safe_redirect( $order->get_checkout_payment_url( true ) );
+		wp_safe_redirect($order->get_checkout_payment_url(true));
 		exit;
 	}
 
@@ -643,13 +643,13 @@ 
 	 * @return bool
 	 */
 	public function maybe_redirect_stripe_checkout() {
-		$is_payment_request = ( isset( $_POST ) && isset( $_POST['payment_request_type'] ) );
+		$is_payment_request = (isset($_POST) && isset($_POST['payment_request_type']));
 
 		return (
 			$this->stripe_checkout &&
-			! isset( $_POST['stripe_checkout_order'] ) &&
+			! isset($_POST['stripe_checkout_order']) &&
 			! $this->is_using_saved_payment_method() &&
-			! is_wc_endpoint_url( 'order-pay' ) &&
+			! is_wc_endpoint_url('order-pay') &&
 			! $is_payment_request
 		);
 	}
@@ -668,53 +668,53 @@ 
 	 *
 	 * @return array|void
 	 */
-	public function process_payment( $order_id, $retry = true, $force_save_source = false, $previous_error = false ) {
+	public function process_payment($order_id, $retry = true, $force_save_source = false, $previous_error = false) {
 		try {
-			$order = wc_get_order( $order_id );
+			$order = wc_get_order($order_id);
 
-			if ( $this->maybe_redirect_stripe_checkout() ) {
-				WC_Stripe_Logger::log( sprintf( 'Redirecting to Stripe Checkout page for order %s', $order_id ) );
+			if ($this->maybe_redirect_stripe_checkout()) {
+				WC_Stripe_Logger::log(sprintf('Redirecting to Stripe Checkout page for order %s', $order_id));
 
 				return array(
 					'result'   => 'success',
-					'redirect' => $order->get_checkout_payment_url( true ),
+					'redirect' => $order->get_checkout_payment_url(true),
 				);
 			}
 
-			if ( $this->maybe_process_pre_orders( $order_id ) ) {
-				return $this->pre_orders->process_pre_order( $order_id );
+			if ($this->maybe_process_pre_orders($order_id)) {
+				return $this->pre_orders->process_pre_order($order_id);
 			}
 
 			// This comes from the create account checkbox in the checkout page.
-			$create_account = ! empty( $_POST['createaccount'] ) ? true : false;
+			$create_account = ! empty($_POST['createaccount']) ? true : false;
 
-			if ( $create_account ) {
-				$new_customer_id     = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->customer_user : $order->get_customer_id();
-				$new_stripe_customer = new WC_Stripe_Customer( $new_customer_id );
+			if ($create_account) {
+				$new_customer_id     = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->customer_user : $order->get_customer_id();
+				$new_stripe_customer = new WC_Stripe_Customer($new_customer_id);
 				$new_stripe_customer->create_customer();
 			}
 
-			$prepared_source = $this->prepare_source( get_current_user_id(), $force_save_source );
+			$prepared_source = $this->prepare_source(get_current_user_id(), $force_save_source);
 
 			// Check if we don't allow prepaid credit cards.
-			if ( ! apply_filters( 'wc_stripe_allow_prepaid_card', true ) && $this->is_prepaid_card( $prepared_source->source_object ) ) {
-				$localized_message = __( 'Sorry, we\'re not accepting prepaid cards at this time. Your credit card has not been charged. Please try with alternative payment method.', 'woocommerce-gateway-stripe' );
-				throw new WC_Stripe_Exception( print_r( $prepared_source->source_object, true ), $localized_message );
+			if ( ! apply_filters('wc_stripe_allow_prepaid_card', true) && $this->is_prepaid_card($prepared_source->source_object)) {
+				$localized_message = __('Sorry, we\'re not accepting prepaid cards at this time. Your credit card has not been charged. Please try with alternative payment method.', 'woocommerce-gateway-stripe');
+				throw new WC_Stripe_Exception(print_r($prepared_source->source_object, true), $localized_message);
 			}
 
-			if ( empty( $prepared_source->source ) ) {
-				$localized_message = __( 'Payment processing failed. Please retry.', 'woocommerce-gateway-stripe' );
-				throw new WC_Stripe_Exception( print_r( $prepared_source, true ), $localized_message );
+			if (empty($prepared_source->source)) {
+				$localized_message = __('Payment processing failed. Please retry.', 'woocommerce-gateway-stripe');
+				throw new WC_Stripe_Exception(print_r($prepared_source, true), $localized_message);
 			}
 
-			$this->save_source_to_order( $order, $prepared_source );
+			$this->save_source_to_order($order, $prepared_source);
 
 			// Result from Stripe API request.
 			$response = null;
 
-			if ( $order->get_total() > 0 ) {
+			if ($order->get_total() > 0) {
 				// This will throw exception if not valid.
-				$this->validate_minimum_order_amount( $order );
+				$this->validate_minimum_order_amount($order);
 
 				/*
 				 * Check if card 3DS is required or optional with 3DS setting.
@@ -723,22 +723,22 @@ 
 				 * Note that if we need to save source, the original source must be first
 				 * attached to a customer in Stripe before it can be charged.
 				 */
-				if ( $this->is_3ds_required( $prepared_source->source_object ) ) {
-					$response = $this->create_3ds_source( $order, $prepared_source->source_object );
+				if ($this->is_3ds_required($prepared_source->source_object)) {
+					$response = $this->create_3ds_source($order, $prepared_source->source_object);
 
-					if ( ! empty( $response->error ) ) {
+					if ( ! empty($response->error)) {
 						$localized_message = $response->error->message;
 
-						$order->add_order_note( $localized_message );
+						$order->add_order_note($localized_message);
 
-						throw new WC_Stripe_Exception( print_r( $response, true ), $localized_message );
+						throw new WC_Stripe_Exception(print_r($response, true), $localized_message);
 					}
 
 					// Update order meta with 3DS source.
-					if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-						update_post_meta( $order_id, '_stripe_source_id', $response->id );
+					if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+						update_post_meta($order_id, '_stripe_source_id', $response->id);
 					} else {
-						$order->update_meta_data( '_stripe_source_id', $response->id );
+						$order->update_meta_data('_stripe_source_id', $response->id);
 						$order->save();
 					}
 
@@ -746,91 +746,91 @@ 
 					 * Make sure after creating 3DS object it is in pending status
 					 * before redirecting.
 					 */
-					if ( 'pending' === $response->redirect->status ) {
-						WC_Stripe_Logger::log( 'Info: Redirecting to 3DS...' );
+					if ('pending' === $response->redirect->status) {
+						WC_Stripe_Logger::log('Info: Redirecting to 3DS...');
 
 						return array(
 							'result'   => 'success',
-							'redirect' => esc_url_raw( $response->redirect->url ),
+							'redirect' => esc_url_raw($response->redirect->url),
 						);
-					} elseif ( 'not_required' === $response->redirect->status && 'chargeable' === $response->status ) {
+					} elseif ('not_required' === $response->redirect->status && 'chargeable' === $response->status) {
 						// Override the original source object with 3DS.
 						$prepared_source->source_object = $response;
 						$prepared_source->source        = $response->id;
 					}
 				}
 
-				WC_Stripe_Logger::log( "Info: Begin processing payment for order $order_id for the amount of {$order->get_total()}" );
+				WC_Stripe_Logger::log("Info: Begin processing payment for order $order_id for the amount of {$order->get_total()}");
 
 				/* If we're doing a retry and source is chargeable, we need to pass
 				 * a different idempotency key and retry for success.
 				 */
-				if ( $this->need_update_idempotency_key( $prepared_source->source_object, $previous_error ) ) {
-					add_filter( 'wc_stripe_idempotency_key', array( $this, 'change_idempotency_key' ), 10, 2 );
+				if ($this->need_update_idempotency_key($prepared_source->source_object, $previous_error)) {
+					add_filter('wc_stripe_idempotency_key', array($this, 'change_idempotency_key'), 10, 2);
 				}
 
 				// Make the request.
-				$response = WC_Stripe_API::request( $this->generate_payment_request( $order, $prepared_source ) );
+				$response = WC_Stripe_API::request($this->generate_payment_request($order, $prepared_source));
 
-				if ( ! empty( $response->error ) ) {
+				if ( ! empty($response->error)) {
 					// Customer param wrong? The user may have been deleted on stripe's end. Remove customer_id. Can be retried without.
-					if ( $this->is_no_such_customer_error( $response->error ) ) {
-						if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-							delete_user_meta( $order->customer_user, '_stripe_customer_id' );
-							delete_post_meta( $order_id, '_stripe_customer_id' );
+					if ($this->is_no_such_customer_error($response->error)) {
+						if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+							delete_user_meta($order->customer_user, '_stripe_customer_id');
+							delete_post_meta($order_id, '_stripe_customer_id');
 						} else {
-							delete_user_meta( $order->get_customer_id(), '_stripe_customer_id' );
-							$order->delete_meta_data( '_stripe_customer_id' );
+							delete_user_meta($order->get_customer_id(), '_stripe_customer_id');
+							$order->delete_meta_data('_stripe_customer_id');
 							$order->save();
 						}
 					}
 
-					if ( $this->is_no_such_token_error( $response->error ) && $prepared_source->token_id ) {
+					if ($this->is_no_such_token_error($response->error) && $prepared_source->token_id) {
 						// Source param wrong? The CARD may have been deleted on stripe's end. Remove token and show message.
-						$wc_token = WC_Payment_Tokens::get( $prepared_source->token_id );
+						$wc_token = WC_Payment_Tokens::get($prepared_source->token_id);
 						$wc_token->delete();
-						$localized_message = __( 'This card is no longer available and has been removed.', 'woocommerce-gateway-stripe' );
-						$order->add_order_note( $localized_message );
-						throw new WC_Stripe_Exception( print_r( $response, true ), $localized_message );
+						$localized_message = __('This card is no longer available and has been removed.', 'woocommerce-gateway-stripe');
+						$order->add_order_note($localized_message);
+						throw new WC_Stripe_Exception(print_r($response, true), $localized_message);
 					}
 
 					// We want to retry.
-					if ( $this->is_retryable_error( $response->error ) ) {
-						if ( $retry ) {
+					if ($this->is_retryable_error($response->error)) {
+						if ($retry) {
 							// Don't do anymore retries after this.
-							if ( 5 <= $this->retry_interval ) {
-								return $this->process_payment( $order_id, false, $force_save_source, $response->error );
+							if (5 <= $this->retry_interval) {
+								return $this->process_payment($order_id, false, $force_save_source, $response->error);
 							}
 
-							sleep( $this->retry_interval );
+							sleep($this->retry_interval);
 
 							$this->retry_interval++;
 
-							return $this->process_payment( $order_id, true, $force_save_source, $response->error );
+							return $this->process_payment($order_id, true, $force_save_source, $response->error);
 						} else {
-							$localized_message = __( 'Sorry, we are unable to process your payment at this time. Please retry later.', 'woocommerce-gateway-stripe' );
-							$order->add_order_note( $localized_message );
-							throw new WC_Stripe_Exception( print_r( $response, true ), $localized_message );
+							$localized_message = __('Sorry, we are unable to process your payment at this time. Please retry later.', 'woocommerce-gateway-stripe');
+							$order->add_order_note($localized_message);
+							throw new WC_Stripe_Exception(print_r($response, true), $localized_message);
 						}
 					}
 
 					$localized_messages = WC_Stripe_Helper::get_localized_messages();
 
-					if ( 'card_error' === $response->error->type ) {
-						$localized_message = isset( $localized_messages[ $response->error->code ] ) ? $localized_messages[ $response->error->code ] : $response->error->message;
+					if ('card_error' === $response->error->type) {
+						$localized_message = isset($localized_messages[$response->error->code]) ? $localized_messages[$response->error->code] : $response->error->message;
 					} else {
-						$localized_message = isset( $localized_messages[ $response->error->type ] ) ? $localized_messages[ $response->error->type ] : $response->error->message;
+						$localized_message = isset($localized_messages[$response->error->type]) ? $localized_messages[$response->error->type] : $response->error->message;
 					}
 
-					$order->add_order_note( $localized_message );
+					$order->add_order_note($localized_message);
 
-					throw new WC_Stripe_Exception( print_r( $response, true ), $localized_message );
+					throw new WC_Stripe_Exception(print_r($response, true), $localized_message);
 				}
 
-				do_action( 'wc_gateway_stripe_process_payment', $response, $order );
+				do_action('wc_gateway_stripe_process_payment', $response, $order);
 
 				// Process valid response.
-				$this->process_response( $response, $order );
+				$this->process_response($response, $order);
 			} else {
 				$order->payment_complete();
 			}
@@ -841,17 +841,17 @@ 
 			// Return thank you page redirect.
 			return array(
 				'result'   => 'success',
-				'redirect' => $this->get_return_url( $order ),
+				'redirect' => $this->get_return_url($order),
 			);
 
-		} catch ( WC_Stripe_Exception $e ) {
-			wc_add_notice( $e->getLocalizedMessage(), 'error' );
-			WC_Stripe_Logger::log( 'Error: ' . $e->getMessage() );
+		} catch (WC_Stripe_Exception $e) {
+			wc_add_notice($e->getLocalizedMessage(), 'error');
+			WC_Stripe_Logger::log('Error: ' . $e->getMessage());
 
-			do_action( 'wc_gateway_stripe_process_payment_error', $e, $order );
+			do_action('wc_gateway_stripe_process_payment_error', $e, $order);
 
 			/* translators: error message */
-			$order->update_status( 'failed' );
+			$order->update_status('failed');
 
 			return array(
 				'result'   => 'fail',
@@ -867,17 +867,17 @@ 
 	 *
 	 * @param int $order_id
 	 */
-	public function display_order_fee( $order_id ) {
-		if ( apply_filters( 'wc_stripe_hide_display_order_fee', false, $order_id ) ) {
+	public function display_order_fee($order_id) {
+		if (apply_filters('wc_stripe_hide_display_order_fee', false, $order_id)) {
 			return;
 		}
 
-		$order = wc_get_order( $order_id );
+		$order = wc_get_order($order_id);
 
-		$fee      = WC_Stripe_Helper::get_stripe_fee( $order );
-		$currency = WC_Stripe_Helper::get_stripe_currency( $order );
+		$fee      = WC_Stripe_Helper::get_stripe_fee($order);
+		$currency = WC_Stripe_Helper::get_stripe_currency($order);
 
-		if ( ! $fee || ! $currency ) {
+		if ( ! $fee || ! $currency) {
 			return;
 		}
 
@@ -885,12 +885,12 @@ 
 
 		<tr>
 			<td class="label stripe-fee">
-				<?php echo wc_help_tip( __( 'This represents the fee Stripe collects for the transaction.', 'woocommerce-gateway-stripe' ) ); ?>
-				<?php esc_html_e( 'Stripe Fee:', 'woocommerce-gateway-stripe' ); ?>
+				<?php echo wc_help_tip(__('This represents the fee Stripe collects for the transaction.', 'woocommerce-gateway-stripe')); ?>
+				<?php esc_html_e('Stripe Fee:', 'woocommerce-gateway-stripe'); ?>
 			</td>
 			<td width="1%"></td>
 			<td class="total">
-				-&nbsp;<?php echo wc_price( $fee, array( 'currency' => $currency ) ); ?>
+				-&nbsp;<?php echo wc_price($fee, array('currency' => $currency)); ?>
 			</td>
 		</tr>
 
@@ -904,17 +904,17 @@ 
 	 *
 	 * @param int $order_id
 	 */
-	public function display_order_payout( $order_id ) {
-		if ( apply_filters( 'wc_stripe_hide_display_order_payout', false, $order_id ) ) {
+	public function display_order_payout($order_id) {
+		if (apply_filters('wc_stripe_hide_display_order_payout', false, $order_id)) {
 			return;
 		}
 
-		$order = wc_get_order( $order_id );
+		$order = wc_get_order($order_id);
 
-		$net      = WC_Stripe_Helper::get_stripe_net( $order );
-		$currency = WC_Stripe_Helper::get_stripe_currency( $order );
+		$net      = WC_Stripe_Helper::get_stripe_net($order);
+		$currency = WC_Stripe_Helper::get_stripe_currency($order);
 
-		if ( ! $net || ! $currency ) {
+		if ( ! $net || ! $currency) {
 			return;
 		}
 
@@ -922,12 +922,12 @@ 
 
 		<tr>
 			<td class="label stripe-payout">
-				<?php echo wc_help_tip( __( 'This represents the net total that will be credited to your Stripe bank account. This may be in the currency that is set in your Stripe account.', 'woocommerce-gateway-stripe' ) ); ?>
-				<?php esc_html_e( 'Stripe Payout:', 'woocommerce-gateway-stripe' ); ?>
+				<?php echo wc_help_tip(__('This represents the net total that will be credited to your Stripe bank account. This may be in the currency that is set in your Stripe account.', 'woocommerce-gateway-stripe')); ?>
+				<?php esc_html_e('Stripe Payout:', 'woocommerce-gateway-stripe'); ?>
 			</td>
 			<td width="1%"></td>
 			<td class="total">
-				<?php echo wc_price( $net, array( 'currency' => $currency ) ); ?>
+				<?php echo wc_price($net, array('currency' => $currency)); ?>
 			</td>
 		</tr>
 

includes/payment-methods/class-wc-stripe-payment-request.php

Spacing +298 added lines, -298 removed lines

@@ -6,7 +6,7 @@ 
  * @since   4.0.0
  */
 
-if ( ! defined( 'ABSPATH' ) ) {
+if ( ! defined('ABSPATH')) {
 	exit;
 }
 
@@ -71,42 +71,42 @@ 
 	 */
 	public function __construct() {
 		self::$_this                   = $this;
-		$this->stripe_settings         = get_option( 'woocommerce_stripe_settings', array() );
-		$this->testmode                = ( ! empty( $this->stripe_settings['testmode'] ) && 'yes' === $this->stripe_settings['testmode'] ) ? true : false;
-		$this->publishable_key         = ! empty( $this->stripe_settings['publishable_key'] ) ? $this->stripe_settings['publishable_key'] : '';
-		$this->secret_key              = ! empty( $this->stripe_settings['secret_key'] ) ? $this->stripe_settings['secret_key'] : '';
-		$this->stripe_checkout_enabled = isset( $this->stripe_settings['stripe_checkout'] ) && 'yes' === $this->stripe_settings['stripe_checkout'];
-		$this->total_label             = ! empty( $this->stripe_settings['statement_descriptor'] ) ? WC_Stripe_Helper::clean_statement_descriptor( $this->stripe_settings['statement_descriptor'] ) : '';
+		$this->stripe_settings         = get_option('woocommerce_stripe_settings', array());
+		$this->testmode                = ( ! empty($this->stripe_settings['testmode']) && 'yes' === $this->stripe_settings['testmode']) ? true : false;
+		$this->publishable_key         = ! empty($this->stripe_settings['publishable_key']) ? $this->stripe_settings['publishable_key'] : '';
+		$this->secret_key              = ! empty($this->stripe_settings['secret_key']) ? $this->stripe_settings['secret_key'] : '';
+		$this->stripe_checkout_enabled = isset($this->stripe_settings['stripe_checkout']) && 'yes' === $this->stripe_settings['stripe_checkout'];
+		$this->total_label             = ! empty($this->stripe_settings['statement_descriptor']) ? WC_Stripe_Helper::clean_statement_descriptor($this->stripe_settings['statement_descriptor']) : '';
 
-		if ( $this->testmode ) {
-			$this->publishable_key = ! empty( $this->stripe_settings['test_publishable_key'] ) ? $this->stripe_settings['test_publishable_key'] : '';
-			$this->secret_key      = ! empty( $this->stripe_settings['test_secret_key'] ) ? $this->stripe_settings['test_secret_key'] : '';
+		if ($this->testmode) {
+			$this->publishable_key = ! empty($this->stripe_settings['test_publishable_key']) ? $this->stripe_settings['test_publishable_key'] : '';
+			$this->secret_key      = ! empty($this->stripe_settings['test_secret_key']) ? $this->stripe_settings['test_secret_key'] : '';
 		}
 
-		$this->total_label = str_replace( "'", '', $this->total_label ) . apply_filters( 'wc_stripe_payment_request_total_label_suffix', ' (via WooCommerce)' );
+		$this->total_label = str_replace("'", '', $this->total_label) . apply_filters('wc_stripe_payment_request_total_label_suffix', ' (via WooCommerce)');
 
 		// Checks if Stripe Gateway is enabled.
-		if ( empty( $this->stripe_settings ) || ( isset( $this->stripe_settings['enabled'] ) && 'yes' !== $this->stripe_settings['enabled'] ) ) {
+		if (empty($this->stripe_settings) || (isset($this->stripe_settings['enabled']) && 'yes' !== $this->stripe_settings['enabled'])) {
 			return;
 		}
 
 		// Checks if Payment Request is enabled.
-		if ( ! isset( $this->stripe_settings['payment_request'] ) || 'yes' !== $this->stripe_settings['payment_request'] ) {
+		if ( ! isset($this->stripe_settings['payment_request']) || 'yes' !== $this->stripe_settings['payment_request']) {
 			return;
 		}
 
 		// Don't load for change payment method page.
-		if ( isset( $_GET['change_payment_method'] ) ) {
+		if (isset($_GET['change_payment_method'])) {
 			return;
 		}
 
-		$wc_default_country = substr( get_option( 'woocommerce_default_country' ), 0, 2 );
+		$wc_default_country = substr(get_option('woocommerce_default_country'), 0, 2);
 
-		if ( ! in_array( $wc_default_country, $this->get_stripe_supported_countries() ) ) {
+		if ( ! in_array($wc_default_country, $this->get_stripe_supported_countries())) {
 			return;
 		}
 
-		add_action( 'template_redirect', array( $this, 'set_session' ) );
+		add_action('template_redirect', array($this, 'set_session'));
 		$this->init();
 	}
 
@@ -117,7 +117,7 @@ 
 	 * @return array The list of countries.
 	 */
 	public function get_stripe_supported_countries() {
-		return apply_filters( 'wc_stripe_supported_countries', array( 'AT', 'AU', 'BE', 'BR', 'CA', 'CH', 'DE', 'DK', 'EE', 'ES', 'FI', 'FR', 'GB', 'HK', 'IE', 'IN', 'IT', 'JP', 'LT', 'LU', 'LV', 'MX', 'NL', 'NZ', 'NO', 'PH', 'PL', 'PT', 'RO', 'SE', 'SG', 'SK', 'US' ) );
+		return apply_filters('wc_stripe_supported_countries', array('AT', 'AU', 'BE', 'BR', 'CA', 'CH', 'DE', 'DK', 'EE', 'ES', 'FI', 'FR', 'GB', 'HK', 'IE', 'IN', 'IT', 'JP', 'LT', 'LU', 'LV', 'MX', 'NL', 'NZ', 'NO', 'PH', 'PL', 'PT', 'RO', 'SE', 'SG', 'SK', 'US'));
 	}
 
 	/**
@@ -127,7 +127,7 @@ 
 	 * @return bool
 	 */
 	public function are_keys_set() {
-		if ( empty( $this->secret_key ) || empty( $this->publishable_key ) ) {
+		if (empty($this->secret_key) || empty($this->publishable_key)) {
 			return false;
 		}
 
@@ -151,18 +151,18 @@ 
 	 * @since 4.0.0
 	 */
 	public function set_session() {
-		if ( ! is_product() || ( isset( WC()->session ) && WC()->session->has_session() ) ) {
+		if ( ! is_product() || (isset(WC()->session) && WC()->session->has_session())) {
 			return;
 		}
 
-		$session_class = apply_filters( 'woocommerce_session_handler', 'WC_Session_Handler' );
+		$session_class = apply_filters('woocommerce_session_handler', 'WC_Session_Handler');
 		$wc_session    = new $session_class();
 
-		if ( version_compare( WC_VERSION, '3.3', '>=' ) ) {
+		if (version_compare(WC_VERSION, '3.3', '>=')) {
 			$wc_session->init();
 		}
 
-		$wc_session->set_customer_session_cookie( true );
+		$wc_session->set_customer_session_cookie(true);
 	}
 
 	/**
@@ -172,40 +172,40 @@ 
 	 * @version 4.0.0
 	 */
 	public function init() {
-		add_action( 'wp_enqueue_scripts', array( $this, 'scripts' ) );
+		add_action('wp_enqueue_scripts', array($this, 'scripts'));
 
 		/*
 		 * In order to display the Payment Request button in the correct position,
 		 * a new hook was added to WooCommerce 3.0. In older versions of WooCommerce,
 		 * CSS is used to position the button.
 		 */
-		if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-			add_action( 'woocommerce_after_add_to_cart_button', array( $this, 'display_payment_request_button_html' ), 1 );
-			add_action( 'woocommerce_after_add_to_cart_button', array( $this, 'display_payment_request_button_separator_html' ), 2 );
+		if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+			add_action('woocommerce_after_add_to_cart_button', array($this, 'display_payment_request_button_html'), 1);
+			add_action('woocommerce_after_add_to_cart_button', array($this, 'display_payment_request_button_separator_html'), 2);
 		} else {
-			add_action( 'woocommerce_after_add_to_cart_quantity', array( $this, 'display_payment_request_button_html' ), 1 );
-			add_action( 'woocommerce_after_add_to_cart_quantity', array( $this, 'display_payment_request_button_separator_html' ), 2 );
+			add_action('woocommerce_after_add_to_cart_quantity', array($this, 'display_payment_request_button_html'), 1);
+			add_action('woocommerce_after_add_to_cart_quantity', array($this, 'display_payment_request_button_separator_html'), 2);
 		}
 
-		add_action( 'woocommerce_proceed_to_checkout', array( $this, 'display_payment_request_button_html' ), 1 );
-		add_action( 'woocommerce_proceed_to_checkout', array( $this, 'display_payment_request_button_separator_html' ), 2 );
+		add_action('woocommerce_proceed_to_checkout', array($this, 'display_payment_request_button_html'), 1);
+		add_action('woocommerce_proceed_to_checkout', array($this, 'display_payment_request_button_separator_html'), 2);
 
-		add_action( 'woocommerce_checkout_before_customer_details', array( $this, 'display_payment_request_button_html' ), 1 );
-		add_action( 'woocommerce_checkout_before_customer_details', array( $this, 'display_payment_request_button_separator_html' ), 2 );
+		add_action('woocommerce_checkout_before_customer_details', array($this, 'display_payment_request_button_html'), 1);
+		add_action('woocommerce_checkout_before_customer_details', array($this, 'display_payment_request_button_separator_html'), 2);
 
-		add_action( 'wc_ajax_wc_stripe_get_cart_details', array( $this, 'ajax_get_cart_details' ) );
-		add_action( 'wc_ajax_wc_stripe_get_shipping_options', array( $this, 'ajax_get_shipping_options' ) );
-		add_action( 'wc_ajax_wc_stripe_update_shipping_method', array( $this, 'ajax_update_shipping_method' ) );
-		add_action( 'wc_ajax_wc_stripe_create_order', array( $this, 'ajax_create_order' ) );
-		add_action( 'wc_ajax_wc_stripe_add_to_cart', array( $this, 'ajax_add_to_cart' ) );
-		add_action( 'wc_ajax_wc_stripe_get_selected_product_data', array( $this, 'ajax_get_selected_product_data' ) );
-		add_action( 'wc_ajax_wc_stripe_clear_cart', array( $this, 'ajax_clear_cart' ) );
-		add_action( 'wc_ajax_wc_stripe_log_errors', array( $this, 'ajax_log_errors' ) );
+		add_action('wc_ajax_wc_stripe_get_cart_details', array($this, 'ajax_get_cart_details'));
+		add_action('wc_ajax_wc_stripe_get_shipping_options', array($this, 'ajax_get_shipping_options'));
+		add_action('wc_ajax_wc_stripe_update_shipping_method', array($this, 'ajax_update_shipping_method'));
+		add_action('wc_ajax_wc_stripe_create_order', array($this, 'ajax_create_order'));
+		add_action('wc_ajax_wc_stripe_add_to_cart', array($this, 'ajax_add_to_cart'));
+		add_action('wc_ajax_wc_stripe_get_selected_product_data', array($this, 'ajax_get_selected_product_data'));
+		add_action('wc_ajax_wc_stripe_clear_cart', array($this, 'ajax_clear_cart'));
+		add_action('wc_ajax_wc_stripe_log_errors', array($this, 'ajax_log_errors'));
 
-		add_filter( 'woocommerce_gateway_title', array( $this, 'filter_gateway_title' ), 10, 2 );
-		add_filter( 'woocommerce_validate_postcode', array( $this, 'postal_code_validation' ), 10, 3 );
+		add_filter('woocommerce_gateway_title', array($this, 'filter_gateway_title'), 10, 2);
+		add_filter('woocommerce_validate_postcode', array($this, 'postal_code_validation'), 10, 3);
 
-		add_action( 'woocommerce_checkout_order_processed', array( $this, 'add_order_meta' ), 10, 2 );
+		add_action('woocommerce_checkout_order_processed', array($this, 'add_order_meta'), 10, 2);
 	}
 
 	/**
@@ -216,7 +216,7 @@ 
 	 * @return string
 	 */
 	public function get_button_type() {
-		return isset( $this->stripe_settings['payment_request_button_type'] ) ? $this->stripe_settings['payment_request_button_type'] : 'default';
+		return isset($this->stripe_settings['payment_request_button_type']) ? $this->stripe_settings['payment_request_button_type'] : 'default';
 	}
 
 	/**
@@ -227,7 +227,7 @@ 
 	 * @return string
 	 */
 	public function get_button_theme() {
-		return isset( $this->stripe_settings['payment_request_button_theme'] ) ? $this->stripe_settings['payment_request_button_theme'] : 'dark';
+		return isset($this->stripe_settings['payment_request_button_theme']) ? $this->stripe_settings['payment_request_button_theme'] : 'dark';
 	}
 
 	/**
@@ -238,7 +238,7 @@ 
 	 * @return string
 	 */
 	public function get_button_height() {
-		return isset( $this->stripe_settings['payment_request_button_height'] ) ? str_replace( 'px', '', $this->stripe_settings['payment_request_button_height'] ) : '64';
+		return isset($this->stripe_settings['payment_request_button_height']) ? str_replace('px', '', $this->stripe_settings['payment_request_button_height']) : '64';
 	}
 
 	/**
@@ -248,40 +248,40 @@ 
 	 * @version 4.0.0
 	 */
 	public function get_product_data() {
-		if ( ! is_product() ) {
+		if ( ! is_product()) {
 			return false;
 		}
 
 		global $post;
 
-		$product = wc_get_product( $post->ID );
+		$product = wc_get_product($post->ID);
 
 		$data  = array();
 		$items = array();
 
 		$items[] = array(
-			'label'  => WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $product->name : $product->get_name(),
-			'amount' => WC_Stripe_Helper::get_stripe_amount( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $product->price : $product->get_price() ),
+			'label'  => WC_Stripe_Helper::is_wc_lt('3.0') ? $product->name : $product->get_name(),
+			'amount' => WC_Stripe_Helper::get_stripe_amount(WC_Stripe_Helper::is_wc_lt('3.0') ? $product->price : $product->get_price()),
 		);
 
-		if ( wc_tax_enabled() ) {
+		if (wc_tax_enabled()) {
 			$items[] = array(
-				'label'   => __( 'Tax', 'woocommerce-gateway-stripe' ),
+				'label'   => __('Tax', 'woocommerce-gateway-stripe'),
 				'amount'  => 0,
 				'pending' => true,
 			);
 		}
 
-		if ( wc_shipping_enabled() && $product->needs_shipping() ) {
+		if (wc_shipping_enabled() && $product->needs_shipping()) {
 			$items[] = array(
-				'label'   => __( 'Shipping', 'woocommerce-gateway-stripe' ),
+				'label'   => __('Shipping', 'woocommerce-gateway-stripe'),
 				'amount'  => 0,
 				'pending' => true,
 			);
 
 			$data['shippingOptions'] = array(
 				'id'     => 'pending',
-				'label'  => __( 'Pending', 'woocommerce-gateway-stripe' ),
+				'label'  => __('Pending', 'woocommerce-gateway-stripe'),
 				'detail' => '',
 				'amount' => 0,
 			);
@@ -289,41 +289,41 @@ 
 
 		$data['displayItems'] = $items;
 		$data['total']        = array(
-			'label'   => apply_filters( 'wc_stripe_payment_request_total_label', $this->total_label ),
-			'amount'  => WC_Stripe_Helper::get_stripe_amount( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $product->price : $product->get_price() ),
+			'label'   => apply_filters('wc_stripe_payment_request_total_label', $this->total_label),
+			'amount'  => WC_Stripe_Helper::get_stripe_amount(WC_Stripe_Helper::is_wc_lt('3.0') ? $product->price : $product->get_price()),
 			'pending' => true,
 		);
 
-		$data['requestShipping'] = ( wc_shipping_enabled() && $product->needs_shipping() );
-		$data['currency']        = strtolower( get_woocommerce_currency() );
-		$data['country_code']    = substr( get_option( 'woocommerce_default_country' ), 0, 2 );
+		$data['requestShipping'] = (wc_shipping_enabled() && $product->needs_shipping());
+		$data['currency']        = strtolower(get_woocommerce_currency());
+		$data['country_code']    = substr(get_option('woocommerce_default_country'), 0, 2);
 
-		return apply_filters( 'wc_stripe_payment_request_product_data', $data, $product );
+		return apply_filters('wc_stripe_payment_request_product_data', $data, $product);
 	}
 
 	/**
 	 * Filters the gateway title to reflect Payment Request type
 	 *
 	 */
-	public function filter_gateway_title( $title, $id ) {
+	public function filter_gateway_title($title, $id) {
 		global $post;
 
-		if ( ! is_object( $post ) ) {
+		if ( ! is_object($post)) {
 			return $title;
 		}
 
-		if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-			$method_title = get_post_meta( $post->ID, '_payment_method_title', true );
+		if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+			$method_title = get_post_meta($post->ID, '_payment_method_title', true);
 		} else {
-			$order        = wc_get_order( $post->ID );
-			$method_title = is_object( $order ) ? $order->get_payment_method_title() : '';
+			$order        = wc_get_order($post->ID);
+			$method_title = is_object($order) ? $order->get_payment_method_title() : '';
 		}
 
-		if ( 'stripe' === $id && ! empty( $method_title ) && 'Apple Pay (Stripe)' === $method_title ) {
+		if ('stripe' === $id && ! empty($method_title) && 'Apple Pay (Stripe)' === $method_title) {
 			return $method_title;
 		}
 
-		if ( 'stripe' === $id && ! empty( $method_title ) && 'Chrome Payment Request (Stripe)' === $method_title ) {
+		if ('stripe' === $id && ! empty($method_title) && 'Chrome Payment Request (Stripe)' === $method_title) {
 			return $method_title;
 		}
 
@@ -336,16 +336,16 @@ 
 	 * @since 3.1.4
 	 * @version 4.0.0
 	 */
-	public function postal_code_validation( $valid, $postcode, $country ) {
+	public function postal_code_validation($valid, $postcode, $country) {
 		$gateways = WC()->payment_gateways->get_available_payment_gateways();
 
-		if ( ! isset( $gateways['stripe'] ) ) {
+		if ( ! isset($gateways['stripe'])) {
 			return $valid;
 		}
 
-		$payment_request_type = isset( $_POST['payment_request_type'] ) ? wc_clean( $_POST['payment_request_type'] ) : '';
+		$payment_request_type = isset($_POST['payment_request_type']) ? wc_clean($_POST['payment_request_type']) : '';
 
-		if ( 'apple_pay' !== $payment_request_type ) {
+		if ('apple_pay' !== $payment_request_type) {
 			return $valid;
 		}
 
@@ -355,7 +355,7 @@ 
 		 * the order and not let it go through. The remedy for now is just to remove this validation.
 		 * Note that this only works with shipping providers that don't validate full postal codes.
 		 */
-		if ( 'GB' === $country || 'CA' === $country ) {
+		if ('GB' === $country || 'CA' === $country) {
 			return true;
 		}
 
@@ -370,29 +370,29 @@ 
 	 * @param int $order_id
 	 * @param array $posted_data The posted data from checkout form.
 	 */
-	public function add_order_meta( $order_id, $posted_data ) {
-		if ( empty( $_POST['payment_request_type'] ) ) {
+	public function add_order_meta($order_id, $posted_data) {
+		if (empty($_POST['payment_request_type'])) {
 			return;
 		}
 
-		$order = wc_get_order( $order_id );
+		$order = wc_get_order($order_id);
 
-		$payment_request_type = wc_clean( $_POST['payment_request_type'] );
+		$payment_request_type = wc_clean($_POST['payment_request_type']);
 
-		if ( 'apple_pay' === $payment_request_type ) {
-			if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-				update_post_meta( $order_id, '_payment_method_title', 'Apple Pay (Stripe)' );
+		if ('apple_pay' === $payment_request_type) {
+			if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+				update_post_meta($order_id, '_payment_method_title', 'Apple Pay (Stripe)');
 			} else {
-				$order->set_payment_method_title( 'Apple Pay (Stripe)' );
+				$order->set_payment_method_title('Apple Pay (Stripe)');
 				$order->save();
 			}
 		}
 
-		if ( 'payment_request_api' === $payment_request_type ) {
-			if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-				update_post_meta( $order_id, '_payment_method_title', 'Chrome Payment Request (Stripe)' );
+		if ('payment_request_api' === $payment_request_type) {
+			if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+				update_post_meta($order_id, '_payment_method_title', 'Chrome Payment Request (Stripe)');
 			} else {
-				$order->set_payment_method_title( 'Chrome Payment Request (Stripe)' );
+				$order->set_payment_method_title('Chrome Payment Request (Stripe)');
 				$order->save();
 			}
 		}
@@ -429,15 +429,15 @@ 
 	 * @return bool
 	 */
 	public function allowed_items_in_cart() {
-		foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
-			$_product = apply_filters( 'woocommerce_cart_item_product', $cart_item['data'], $cart_item, $cart_item_key );
+		foreach (WC()->cart->get_cart() as $cart_item_key => $cart_item) {
+			$_product = apply_filters('woocommerce_cart_item_product', $cart_item['data'], $cart_item, $cart_item_key);
 
-			if ( ! in_array( ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $_product->product_type : $_product->get_type() ), $this->supported_product_types() ) ) {
+			if ( ! in_array((WC_Stripe_Helper::is_wc_lt('3.0') ? $_product->product_type : $_product->get_type()), $this->supported_product_types())) {
 				return false;
 			}
 
 			// Pre Orders compatbility where we don't support charge upon release.
-			if ( class_exists( 'WC_Pre_Orders_Order' ) && WC_Pre_Orders_Cart::cart_contains_pre_order() && WC_Pre_Orders_Product::product_is_charged_upon_release( WC_Pre_Orders_Cart::get_pre_order_product() ) ) {
+			if (class_exists('WC_Pre_Orders_Order') && WC_Pre_Orders_Cart::cart_contains_pre_order() && WC_Pre_Orders_Product::product_is_charged_upon_release(WC_Pre_Orders_Cart::get_pre_order_product())) {
 				return false;
 			}
 		}
@@ -453,80 +453,80 @@ 
 	 */
 	public function scripts() {
 		// If keys are not set bail.
-		if ( ! $this->are_keys_set() ) {
-			WC_Stripe_Logger::log( 'Keys are not set correctly.' );
+		if ( ! $this->are_keys_set()) {
+			WC_Stripe_Logger::log('Keys are not set correctly.');
 			return;
 		}
 
 		// If no SSL bail.
-		if ( ! $this->testmode && ! is_ssl() ) {
-			WC_Stripe_Logger::log( 'Stripe Payment Request live mode requires SSL.' );
+		if ( ! $this->testmode && ! is_ssl()) {
+			WC_Stripe_Logger::log('Stripe Payment Request live mode requires SSL.');
 			return;
 		}
 
-		if ( ! is_product() && ! is_cart() && ! is_checkout() && ! isset( $_GET['pay_for_order'] ) ) {
+		if ( ! is_product() && ! is_cart() && ! is_checkout() && ! isset($_GET['pay_for_order'])) {
 			return;
 		}
 
-		if ( is_product() ) {
+		if (is_product()) {
 			global $post;
 
-			$product = wc_get_product( $post->ID );
+			$product = wc_get_product($post->ID);
 
-			if ( ! is_object( $product ) || ! in_array( ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $product->product_type : $product->get_type() ), $this->supported_product_types() ) ) {
+			if ( ! is_object($product) || ! in_array((WC_Stripe_Helper::is_wc_lt('3.0') ? $product->product_type : $product->get_type()), $this->supported_product_types())) {
 				return;
 			}
 
-			if ( apply_filters( 'wc_stripe_hide_payment_request_on_product_page', false, $post ) ) {
+			if (apply_filters('wc_stripe_hide_payment_request_on_product_page', false, $post)) {
 				return;
 			}
 		}
 
-		$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
+		$suffix = defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ? '' : '.min';
 
 		$stripe_params = array(
-			'ajax_url'        => WC_AJAX::get_endpoint( '%%endpoint%%' ),
+			'ajax_url'        => WC_AJAX::get_endpoint('%%endpoint%%'),
 			'stripe'          => array(
 				'key'                => $this->publishable_key,
-				'allow_prepaid_card' => apply_filters( 'wc_stripe_allow_prepaid_card', true ) ? 'yes' : 'no',
+				'allow_prepaid_card' => apply_filters('wc_stripe_allow_prepaid_card', true) ? 'yes' : 'no',
 			),
 			'nonce'           => array(
-				'payment'                   => wp_create_nonce( 'wc-stripe-payment-request' ),
-				'shipping'                  => wp_create_nonce( 'wc-stripe-payment-request-shipping' ),
-				'update_shipping'           => wp_create_nonce( 'wc-stripe-update-shipping-method' ),
-				'checkout'                  => wp_create_nonce( 'woocommerce-process_checkout' ),
-				'add_to_cart'               => wp_create_nonce( 'wc-stripe-add-to-cart' ),
-				'get_selected_product_data' => wp_create_nonce( 'wc-stripe-get-selected-product-data' ),
-				'log_errors'                => wp_create_nonce( 'wc-stripe-log-errors' ),
-				'clear_cart'                => wp_create_nonce( 'wc-stripe-clear-cart' ),
+				'payment'                   => wp_create_nonce('wc-stripe-payment-request'),
+				'shipping'                  => wp_create_nonce('wc-stripe-payment-request-shipping'),
+				'update_shipping'           => wp_create_nonce('wc-stripe-update-shipping-method'),
+				'checkout'                  => wp_create_nonce('woocommerce-process_checkout'),
+				'add_to_cart'               => wp_create_nonce('wc-stripe-add-to-cart'),
+				'get_selected_product_data' => wp_create_nonce('wc-stripe-get-selected-product-data'),
+				'log_errors'                => wp_create_nonce('wc-stripe-log-errors'),
+				'clear_cart'                => wp_create_nonce('wc-stripe-clear-cart'),
 			),
 			'i18n'            => array(
-				'no_prepaid_card'  => __( 'Sorry, we\'re not accepting prepaid cards at this time.', 'woocommerce-gateway-stripe' ),
+				'no_prepaid_card'  => __('Sorry, we\'re not accepting prepaid cards at this time.', 'woocommerce-gateway-stripe'),
 				/* translators: Do not translate the [option] placeholder */
-				'unknown_shipping' => __( 'Unknown shipping option "[option]".', 'woocommerce-gateway-stripe' ),
+				'unknown_shipping' => __('Unknown shipping option "[option]".', 'woocommerce-gateway-stripe'),
 			),
 			'checkout'        => array(
 				'url'            => wc_get_checkout_url(),
-				'currency_code'  => strtolower( get_woocommerce_currency() ),
-				'country_code'   => substr( get_option( 'woocommerce_default_country' ), 0, 2 ),
+				'currency_code'  => strtolower(get_woocommerce_currency()),
+				'country_code'   => substr(get_option('woocommerce_default_country'), 0, 2),
 				'needs_shipping' => WC()->cart->needs_shipping() ? 'yes' : 'no',
 			),
 			'button'          => array(
 				'type'   => $this->get_button_type(),
 				'theme'  => $this->get_button_theme(),
 				'height' => $this->get_button_height(),
-				'locale' => apply_filters( 'wc_stripe_payment_request_button_locale', substr( get_locale(), 0, 2 ) ), // Default format is en_US.
+				'locale' => apply_filters('wc_stripe_payment_request_button_locale', substr(get_locale(), 0, 2)), // Default format is en_US.
 			),
 			'is_product_page' => is_product(),
 			'product'         => $this->get_product_data(),
 		);
 
-		wp_register_script( 'stripe', 'https://js.stripe.com/v3/', '', '3.0', true );
-		wp_register_script( 'wc_stripe_payment_request', plugins_url( 'assets/js/stripe-payment-request' . $suffix . '.js', WC_STRIPE_MAIN_FILE ), array( 'jquery', 'stripe' ), WC_STRIPE_VERSION, true );
+		wp_register_script('stripe', 'https://js.stripe.com/v3/', '', '3.0', true);
+		wp_register_script('wc_stripe_payment_request', plugins_url('assets/js/stripe-payment-request' . $suffix . '.js', WC_STRIPE_MAIN_FILE), array('jquery', 'stripe'), WC_STRIPE_VERSION, true);
 
-		wp_localize_script( 'wc_stripe_payment_request', 'wc_stripe_payment_request_params', apply_filters( 'wc_stripe_payment_request_params', $stripe_params ) );
+		wp_localize_script('wc_stripe_payment_request', 'wc_stripe_payment_request_params', apply_filters('wc_stripe_payment_request_params', $stripe_params));
 
-		wp_enqueue_script( 'wc_stripe_payment_request' );
+		wp_enqueue_script('wc_stripe_payment_request');
 	}
 
 	/**
@@ -540,37 +540,37 @@ 
 
 		$gateways = WC()->payment_gateways->get_available_payment_gateways();
 
-		if ( ! isset( $gateways['stripe'] ) ) {
+		if ( ! isset($gateways['stripe'])) {
 			return;
 		}
 
-		if ( ! is_cart() && ! is_checkout() && ! is_product() && ! isset( $_GET['pay_for_order'] ) ) {
+		if ( ! is_cart() && ! is_checkout() && ! is_product() && ! isset($_GET['pay_for_order'])) {
 			return;
 		}
 
-		if ( is_product() && apply_filters( 'wc_stripe_hide_payment_request_on_product_page', false, $post ) ) {
+		if (is_product() && apply_filters('wc_stripe_hide_payment_request_on_product_page', false, $post)) {
 			return;
 		}
 
-		if ( is_checkout() && ! apply_filters( 'wc_stripe_show_payment_request_on_checkout', false, $post ) ) {
+		if (is_checkout() && ! apply_filters('wc_stripe_show_payment_request_on_checkout', false, $post)) {
 			return;
 		}
 
-		if ( is_product() ) {
-			$product = wc_get_product( $post->ID );
+		if (is_product()) {
+			$product = wc_get_product($post->ID);
 
-			if ( ! is_object( $product ) || ! in_array( ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $product->product_type : $product->get_type() ), $this->supported_product_types() ) ) {
+			if ( ! is_object($product) || ! in_array((WC_Stripe_Helper::is_wc_lt('3.0') ? $product->product_type : $product->get_type()), $this->supported_product_types())) {
 				return;
 			}
 
 			// Pre Orders charge upon release not supported.
-			if ( class_exists( 'WC_Pre_Orders_Order' ) && WC_Pre_Orders_Product::product_is_charged_upon_release( $product ) ) {
-				WC_Stripe_Logger::log( 'Pre Order charge upon release is not supported. ( Payment Request button disabled )' );
+			if (class_exists('WC_Pre_Orders_Order') && WC_Pre_Orders_Product::product_is_charged_upon_release($product)) {
+				WC_Stripe_Logger::log('Pre Order charge upon release is not supported. ( Payment Request button disabled )');
 				return;
 			}
 		} else {
-			if ( ! $this->allowed_items_in_cart() ) {
-				WC_Stripe_Logger::log( 'Items in the cart has unsupported product type ( Payment Request button disabled )' );
+			if ( ! $this->allowed_items_in_cart()) {
+				WC_Stripe_Logger::log('Items in the cart has unsupported product type ( Payment Request button disabled )');
 				return;
 			}
 		}
@@ -594,42 +594,42 @@ 
 
 		$gateways = WC()->payment_gateways->get_available_payment_gateways();
 
-		if ( ! isset( $gateways['stripe'] ) ) {
+		if ( ! isset($gateways['stripe'])) {
 			return;
 		}
 
-		if ( ! is_cart() && ! is_checkout() && ! is_product() && ! isset( $_GET['pay_for_order'] ) ) {
+		if ( ! is_cart() && ! is_checkout() && ! is_product() && ! isset($_GET['pay_for_order'])) {
 			return;
 		}
 
-		if ( is_product() && apply_filters( 'wc_stripe_hide_payment_request_on_product_page', false, $post ) ) {
+		if (is_product() && apply_filters('wc_stripe_hide_payment_request_on_product_page', false, $post)) {
 			return;
 		}
 
-		if ( is_checkout() && ! apply_filters( 'wc_stripe_show_payment_request_on_checkout', false, $post ) ) {
+		if (is_checkout() && ! apply_filters('wc_stripe_show_payment_request_on_checkout', false, $post)) {
 			return;
 		}
 
-		if ( is_product() ) {
-			$product = wc_get_product( $post->ID );
+		if (is_product()) {
+			$product = wc_get_product($post->ID);
 
-			if ( ! is_object( $product ) || ! in_array( ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $product->product_type : $product->get_type() ), $this->supported_product_types() ) ) {
+			if ( ! is_object($product) || ! in_array((WC_Stripe_Helper::is_wc_lt('3.0') ? $product->product_type : $product->get_type()), $this->supported_product_types())) {
 				return;
 			}
 
 			// Pre Orders charge upon release not supported.
-			if ( class_exists( 'WC_Pre_Orders_Order' ) && WC_Pre_Orders_Product::product_is_charged_upon_release( $product ) ) {
-				WC_Stripe_Logger::log( 'Pre Order charge upon release is not supported. ( Payment Request button disabled )' );
+			if (class_exists('WC_Pre_Orders_Order') && WC_Pre_Orders_Product::product_is_charged_upon_release($product)) {
+				WC_Stripe_Logger::log('Pre Order charge upon release is not supported. ( Payment Request button disabled )');
 				return;
 			}
 		} else {
-			if ( ! $this->allowed_items_in_cart() ) {
-				WC_Stripe_Logger::log( 'Items in the cart has unsupported product type ( Payment Request button disabled )' );
+			if ( ! $this->allowed_items_in_cart()) {
+				WC_Stripe_Logger::log('Items in the cart has unsupported product type ( Payment Request button disabled )');
 				return;
 			}
 		}
 		?>
-		<p id="wc-stripe-payment-request-button-separator" style="margin-top:1.5em;text-align:center;display:none;">&mdash; <?php esc_html_e( 'OR', 'woocommerce-gateway-stripe' ); ?> &mdash;</p>
+		<p id="wc-stripe-payment-request-button-separator" style="margin-top:1.5em;text-align:center;display:none;">&mdash; <?php esc_html_e('OR', 'woocommerce-gateway-stripe'); ?> &mdash;</p>
 		<?php
 	}
 
@@ -640,11 +640,11 @@ 
 	 * @version 4.0.0
 	 */
 	public function ajax_log_errors() {
-		check_ajax_referer( 'wc-stripe-log-errors', 'security' );
+		check_ajax_referer('wc-stripe-log-errors', 'security');
 
-		$errors = wc_clean( stripslashes( $_POST['errors'] ) );
+		$errors = wc_clean(stripslashes($_POST['errors']));
 
-		WC_Stripe_Logger::log( $errors );
+		WC_Stripe_Logger::log($errors);
 
 		exit;
 	}
@@ -656,7 +656,7 @@ 
 	 * @version 4.0.0
 	 */
 	public function ajax_clear_cart() {
-		check_ajax_referer( 'wc-stripe-clear-cart', 'security' );
+		check_ajax_referer('wc-stripe-clear-cart', 'security');
 
 		WC()->cart->empty_cart();
 		exit;
@@ -666,10 +666,10 @@ 
 	 * Get cart details.
 	 */
 	public function ajax_get_cart_details() {
-		check_ajax_referer( 'wc-stripe-payment-request', 'security' );
+		check_ajax_referer('wc-stripe-payment-request', 'security');
 
-		if ( ! defined( 'WOOCOMMERCE_CART' ) ) {
-			define( 'WOOCOMMERCE_CART', true );
+		if ( ! defined('WOOCOMMERCE_CART')) {
+			define('WOOCOMMERCE_CART', true);
 		}
 
 		WC()->cart->calculate_totals();
@@ -680,14 +680,14 @@ 
 		$data = array(
 			'shipping_required' => WC()->cart->needs_shipping(),
 			'order_data'        => array(
-				'currency'     => strtolower( $currency ),
-				'country_code' => substr( get_option( 'woocommerce_default_country' ), 0, 2 ),
+				'currency'     => strtolower($currency),
+				'country_code' => substr(get_option('woocommerce_default_country'), 0, 2),
 			),
 		);
 
 		$data['order_data'] += $this->build_display_items();
 
-		wp_send_json( $data );
+		wp_send_json($data);
 	}
 
 	/**
@@ -698,7 +698,7 @@ 
 	 * @see WC_Shipping::get_packages().
 	 */
 	public function ajax_get_shipping_options() {
-		check_ajax_referer( 'wc-stripe-payment-request-shipping', 'security' );
+		check_ajax_referer('wc-stripe-payment-request-shipping', 'security');
 
 		try {
 			// Set the shipping package.
@@ -714,34 +714,34 @@ 
 				)
 			);
 
-			$this->calculate_shipping( apply_filters( 'wc_stripe_payment_request_shipping_posted_values', $posted ) );
+			$this->calculate_shipping(apply_filters('wc_stripe_payment_request_shipping_posted_values', $posted));
 
 			// Set the shipping options.
 			$data     = array();
 			$packages = WC()->shipping->get_packages();
 
-			if ( ! empty( $packages ) && WC()->customer->has_calculated_shipping() ) {
-				foreach ( $packages as $package_key => $package ) {
-					if ( empty( $package['rates'] ) ) {
-						throw new Exception( __( 'Unable to find shipping method for address.', 'woocommerce-gateway-stripe' ) );
+			if ( ! empty($packages) && WC()->customer->has_calculated_shipping()) {
+				foreach ($packages as $package_key => $package) {
+					if (empty($package['rates'])) {
+						throw new Exception(__('Unable to find shipping method for address.', 'woocommerce-gateway-stripe'));
 					}
 
-					foreach ( $package['rates'] as $key => $rate ) {
+					foreach ($package['rates'] as $key => $rate) {
 						$data['shipping_options'][] = array(
 							'id'     => $rate->id,
 							'label'  => $rate->label,
 							'detail' => '',
-							'amount' => WC_Stripe_Helper::get_stripe_amount( $rate->cost ),
+							'amount' => WC_Stripe_Helper::get_stripe_amount($rate->cost),
 						);
 					}
 				}
 			} else {
-				throw new Exception( __( 'Unable to find shipping method for address.', 'woocommerce-gateway-stripe' ) );
+				throw new Exception(__('Unable to find shipping method for address.', 'woocommerce-gateway-stripe'));
 			}
 
-			if ( isset( $data[0] ) ) {
+			if (isset($data[0])) {
 				// Auto select the first shipping method.
-				WC()->session->set( 'chosen_shipping_methods', array( $data[0]['id'] ) );
+				WC()->session->set('chosen_shipping_methods', array($data[0]['id']));
 			}
 
 			WC()->cart->calculate_totals();
@@ -749,12 +749,12 @@ 
 			$data          += $this->build_display_items();
 			$data['result'] = 'success';
 
-			wp_send_json( $data );
-		} catch ( Exception $e ) {
+			wp_send_json($data);
+		} catch (Exception $e) {
 			$data          += $this->build_display_items();
 			$data['result'] = 'invalid_shipping_address';
 
-			wp_send_json( $data );
+			wp_send_json($data);
 		}
 	}
 
@@ -762,22 +762,22 @@ 
 	 * Update shipping method.
 	 */
 	public function ajax_update_shipping_method() {
-		check_ajax_referer( 'wc-stripe-update-shipping-method', 'security' );
+		check_ajax_referer('wc-stripe-update-shipping-method', 'security');
 
-		if ( ! defined( 'WOOCOMMERCE_CART' ) ) {
-			define( 'WOOCOMMERCE_CART', true );
+		if ( ! defined('WOOCOMMERCE_CART')) {
+			define('WOOCOMMERCE_CART', true);
 		}
 
-		$chosen_shipping_methods = WC()->session->get( 'chosen_shipping_methods' );
-		$shipping_method         = filter_input( INPUT_POST, 'shipping_method', FILTER_DEFAULT, FILTER_REQUIRE_ARRAY );
+		$chosen_shipping_methods = WC()->session->get('chosen_shipping_methods');
+		$shipping_method         = filter_input(INPUT_POST, 'shipping_method', FILTER_DEFAULT, FILTER_REQUIRE_ARRAY);
 
-		if ( is_array( $shipping_method ) ) {
-			foreach ( $shipping_method as $i => $value ) {
-				$chosen_shipping_methods[ $i ] = wc_clean( $value );
+		if (is_array($shipping_method)) {
+			foreach ($shipping_method as $i => $value) {
+				$chosen_shipping_methods[$i] = wc_clean($value);
 			}
 		}
 
-		WC()->session->set( 'chosen_shipping_methods', $chosen_shipping_methods );
+		WC()->session->set('chosen_shipping_methods', $chosen_shipping_methods);
 
 		WC()->cart->calculate_totals();
 
@@ -785,7 +785,7 @@ 
 		$data          += $this->build_display_items();
 		$data['result'] = 'success';
 
-		wp_send_json( $data );
+		wp_send_json($data);
 	}
 
 	/**
@@ -796,46 +796,46 @@ 
 	 * @return array $data
 	 */
 	public function ajax_get_selected_product_data() {
-		check_ajax_referer( 'wc-stripe-get-selected-product-data', 'security' );
+		check_ajax_referer('wc-stripe-get-selected-product-data', 'security');
 
 		try {
-			$product_id   = absint( $_POST['product_id'] );
-			$qty          = ! isset( $_POST['qty'] ) ? 1 : apply_filters( 'woocommerce_add_to_cart_quantity', absint( $_POST['qty'] ), $product_id );
-			$product      = wc_get_product( $product_id );
+			$product_id   = absint($_POST['product_id']);
+			$qty          = ! isset($_POST['qty']) ? 1 : apply_filters('woocommerce_add_to_cart_quantity', absint($_POST['qty']), $product_id);
+			$product      = wc_get_product($product_id);
 			$variation_id = null;
 
-			if ( ! is_a( $product, 'WC_Product' ) ) {
-				throw new Exception( sprintf( __( 'Product with the ID (%d) cannot be found.', 'woocommerce-gateway-stripe' ), $product_id ) );
+			if ( ! is_a($product, 'WC_Product')) {
+				throw new Exception(sprintf(__('Product with the ID (%d) cannot be found.', 'woocommerce-gateway-stripe'), $product_id));
 			}
 
-			if ( 'variable' === ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $product->product_type : $product->get_type() ) && isset( $_POST['attributes'] ) ) {
-				$attributes = array_map( 'wc_clean', $_POST['attributes'] );
+			if ('variable' === (WC_Stripe_Helper::is_wc_lt('3.0') ? $product->product_type : $product->get_type()) && isset($_POST['attributes'])) {
+				$attributes = array_map('wc_clean', $_POST['attributes']);
 
-				if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-					$variation_id = $product->get_matching_variation( $attributes );
+				if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+					$variation_id = $product->get_matching_variation($attributes);
 				} else {
-					$data_store   = WC_Data_Store::load( 'product' );
-					$variation_id = $data_store->find_matching_product_variation( $product, $attributes );
+					$data_store   = WC_Data_Store::load('product');
+					$variation_id = $data_store->find_matching_product_variation($product, $attributes);
 				}
 
-				if ( ! empty( $variation_id ) ) {
-					$product = wc_get_product( $variation_id );
+				if ( ! empty($variation_id)) {
+					$product = wc_get_product($variation_id);
 				}
-			} elseif ( 'simple' === ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $product->product_type : $product->get_type() ) ) {
-				$product = wc_get_product( $product_id );
+			} elseif ('simple' === (WC_Stripe_Helper::is_wc_lt('3.0') ? $product->product_type : $product->get_type())) {
+				$product = wc_get_product($product_id);
 			}
 
 			// Force quantity to 1 if sold individually and check for existing item in cart.
-			if ( $product->is_sold_individually() ) {
-				$qty = apply_filters( 'wc_stripe_payment_request_add_to_cart_sold_individually_quantity', 1, $qty, $product_id, $variation_id );
+			if ($product->is_sold_individually()) {
+				$qty = apply_filters('wc_stripe_payment_request_add_to_cart_sold_individually_quantity', 1, $qty, $product_id, $variation_id);
 			}
 
-			if ( ! $product->has_enough_stock( $qty ) ) {
+			if ( ! $product->has_enough_stock($qty)) {
 				/* translators: 1: product name 2: quantity in stock */
-				throw new Exception( sprintf( __( 'You cannot add that amount of "%1$s"; to the cart because there is not enough stock (%2$s remaining).', 'woocommerce-gateway-stripe' ), $product->get_name(), wc_format_stock_quantity_for_display( $product->get_stock_quantity(), $product ) ) );
+				throw new Exception(sprintf(__('You cannot add that amount of "%1$s"; to the cart because there is not enough stock (%2$s remaining).', 'woocommerce-gateway-stripe'), $product->get_name(), wc_format_stock_quantity_for_display($product->get_stock_quantity(), $product)));
 			}
 
-			$total = $qty * ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $product->price : $product->get_price() );
+			$total = $qty * (WC_Stripe_Helper::is_wc_lt('3.0') ? $product->price : $product->get_price());
 
 			$quantity_label = 1 < $qty ? ' (x' . $qty . ')' : '';
 
@@ -843,28 +843,28 @@ 
 			$items = array();
 
 			$items[] = array(
-				'label'  => ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $product->name : $product->get_name() ) . $quantity_label,
-				'amount' => WC_Stripe_Helper::get_stripe_amount( $total ),
+				'label'  => (WC_Stripe_Helper::is_wc_lt('3.0') ? $product->name : $product->get_name()) . $quantity_label,
+				'amount' => WC_Stripe_Helper::get_stripe_amount($total),
 			);
 
-			if ( wc_tax_enabled() ) {
+			if (wc_tax_enabled()) {
 				$items[] = array(
-					'label'   => __( 'Tax', 'woocommerce-gateway-stripe' ),
+					'label'   => __('Tax', 'woocommerce-gateway-stripe'),
 					'amount'  => 0,
 					'pending' => true,
 				);
 			}
 
-			if ( wc_shipping_enabled() && $product->needs_shipping() ) {
+			if (wc_shipping_enabled() && $product->needs_shipping()) {
 				$items[] = array(
-					'label'   => __( 'Shipping', 'woocommerce-gateway-stripe' ),
+					'label'   => __('Shipping', 'woocommerce-gateway-stripe'),
 					'amount'  => 0,
 					'pending' => true,
 				);
 
 				$data['shippingOptions'] = array(
 					'id'     => 'pending',
-					'label'  => __( 'Pending', 'woocommerce-gateway-stripe' ),
+					'label'  => __('Pending', 'woocommerce-gateway-stripe'),
 					'detail' => '',
 					'amount' => 0,
 				);
@@ -873,17 +873,17 @@ 
 			$data['displayItems'] = $items;
 			$data['total']        = array(
 				'label'   => $this->total_label,
-				'amount'  => WC_Stripe_Helper::get_stripe_amount( $total ),
+				'amount'  => WC_Stripe_Helper::get_stripe_amount($total),
 				'pending' => true,
 			);
 
-			$data['requestShipping'] = ( wc_shipping_enabled() && $product->needs_shipping() );
-			$data['currency']        = strtolower( get_woocommerce_currency() );
-			$data['country_code']    = substr( get_option( 'woocommerce_default_country' ), 0, 2 );
+			$data['requestShipping'] = (wc_shipping_enabled() && $product->needs_shipping());
+			$data['currency']        = strtolower(get_woocommerce_currency());
+			$data['country_code']    = substr(get_option('woocommerce_default_country'), 0, 2);
 
-			wp_send_json( $data );
-		} catch ( Exception $e ) {
-			wp_send_json( array( 'error' => wp_strip_all_tags( $e->getMessage() ) ) );
+			wp_send_json($data);
+		} catch (Exception $e) {
+			wp_send_json(array('error' => wp_strip_all_tags($e->getMessage())));
 		}
 	}
 
@@ -895,36 +895,36 @@ 
 	 * @return array $data
 	 */
 	public function ajax_add_to_cart() {
-		check_ajax_referer( 'wc-stripe-add-to-cart', 'security' );
+		check_ajax_referer('wc-stripe-add-to-cart', 'security');
 
-		if ( ! defined( 'WOOCOMMERCE_CART' ) ) {
-			define( 'WOOCOMMERCE_CART', true );
+		if ( ! defined('WOOCOMMERCE_CART')) {
+			define('WOOCOMMERCE_CART', true);
 		}
 
 		WC()->shipping->reset_shipping();
 
-		$product_id = absint( $_POST['product_id'] );
-		$qty        = ! isset( $_POST['qty'] ) ? 1 : absint( $_POST['qty'] );
-		$product    = wc_get_product( $product_id );
+		$product_id = absint($_POST['product_id']);
+		$qty        = ! isset($_POST['qty']) ? 1 : absint($_POST['qty']);
+		$product    = wc_get_product($product_id);
 
 		// First empty the cart to prevent wrong calculation.
 		WC()->cart->empty_cart();
 
-		if ( 'variable' === ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $product->product_type : $product->get_type() ) && isset( $_POST['attributes'] ) ) {
-			$attributes = array_map( 'wc_clean', $_POST['attributes'] );
+		if ('variable' === (WC_Stripe_Helper::is_wc_lt('3.0') ? $product->product_type : $product->get_type()) && isset($_POST['attributes'])) {
+			$attributes = array_map('wc_clean', $_POST['attributes']);
 
-			if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-				$variation_id = $product->get_matching_variation( $attributes );
+			if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+				$variation_id = $product->get_matching_variation($attributes);
 			} else {
-				$data_store   = WC_Data_Store::load( 'product' );
-				$variation_id = $data_store->find_matching_product_variation( $product, $attributes );
+				$data_store   = WC_Data_Store::load('product');
+				$variation_id = $data_store->find_matching_product_variation($product, $attributes);
 			}
 
-			WC()->cart->add_to_cart( $product->get_id(), $qty, $variation_id, $attributes );
+			WC()->cart->add_to_cart($product->get_id(), $qty, $variation_id, $attributes);
 		}
 
-		if ( 'simple' === ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $product->product_type : $product->get_type() ) ) {
-			WC()->cart->add_to_cart( $product->get_id(), $qty );
+		if ('simple' === (WC_Stripe_Helper::is_wc_lt('3.0') ? $product->product_type : $product->get_type())) {
+			WC()->cart->add_to_cart($product->get_id(), $qty);
 		}
 
 		WC()->cart->calculate_totals();
@@ -933,7 +933,7 @@ 
 		$data          += $this->build_display_items();
 		$data['result'] = 'success';
 
-		wp_send_json( $data );
+		wp_send_json($data);
 	}
 
 	/**
@@ -946,31 +946,31 @@ 
 	 * @version 4.0.0
 	 */
 	public function normalize_state() {
-		$billing_country  = ! empty( $_POST['billing_country'] ) ? wc_clean( $_POST['billing_country'] ) : '';
-		$shipping_country = ! empty( $_POST['shipping_country'] ) ? wc_clean( $_POST['shipping_country'] ) : '';
-		$billing_state    = ! empty( $_POST['billing_state'] ) ? wc_clean( $_POST['billing_state'] ) : '';
-		$shipping_state   = ! empty( $_POST['shipping_state'] ) ? wc_clean( $_POST['shipping_state'] ) : '';
+		$billing_country  = ! empty($_POST['billing_country']) ? wc_clean($_POST['billing_country']) : '';
+		$shipping_country = ! empty($_POST['shipping_country']) ? wc_clean($_POST['shipping_country']) : '';
+		$billing_state    = ! empty($_POST['billing_state']) ? wc_clean($_POST['billing_state']) : '';
+		$shipping_state   = ! empty($_POST['shipping_state']) ? wc_clean($_POST['shipping_state']) : '';
 
-		if ( $billing_state && $billing_country ) {
-			$valid_states = WC()->countries->get_states( $billing_country );
+		if ($billing_state && $billing_country) {
+			$valid_states = WC()->countries->get_states($billing_country);
 
 			// Valid states found for country.
-			if ( ! empty( $valid_states ) && is_array( $valid_states ) && sizeof( $valid_states ) > 0 ) {
-				foreach ( $valid_states as $state_abbr => $state ) {
-					if ( preg_match( '/' . preg_quote( $state ) . '/i', $billing_state ) ) {
+			if ( ! empty($valid_states) && is_array($valid_states) && sizeof($valid_states) > 0) {
+				foreach ($valid_states as $state_abbr => $state) {
+					if (preg_match('/' . preg_quote($state) . '/i', $billing_state)) {
 						$_POST['billing_state'] = $state_abbr;
 					}
 				}
 			}
 		}
 
-		if ( $shipping_state && $shipping_country ) {
-			$valid_states = WC()->countries->get_states( $shipping_country );
+		if ($shipping_state && $shipping_country) {
+			$valid_states = WC()->countries->get_states($shipping_country);
 
 			// Valid states found for country.
-			if ( ! empty( $valid_states ) && is_array( $valid_states ) && sizeof( $valid_states ) > 0 ) {
-				foreach ( $valid_states as $state_abbr => $state ) {
-					if ( preg_match( '/' . preg_quote( $state ) . '/i', $shipping_state ) ) {
+			if ( ! empty($valid_states) && is_array($valid_states) && sizeof($valid_states) > 0) {
+				foreach ($valid_states as $state_abbr => $state) {
+					if (preg_match('/' . preg_quote($state) . '/i', $shipping_state)) {
 						$_POST['shipping_state'] = $state_abbr;
 					}
 				}
@@ -985,19 +985,19 @@ 
 	 * @version 4.0.0
 	 */
 	public function ajax_create_order() {
-		if ( WC()->cart->is_empty() ) {
-			wp_send_json_error( __( 'Empty cart', 'woocommerce-gateway-stripe' ) );
+		if (WC()->cart->is_empty()) {
+			wp_send_json_error(__('Empty cart', 'woocommerce-gateway-stripe'));
 		}
 
-		if ( ! defined( 'WOOCOMMERCE_CHECKOUT' ) ) {
-			define( 'WOOCOMMERCE_CHECKOUT', true );
+		if ( ! defined('WOOCOMMERCE_CHECKOUT')) {
+			define('WOOCOMMERCE_CHECKOUT', true);
 		}
 
 		$this->normalize_state();
 
 		WC()->checkout()->process_checkout();
 
-		die( 0 );
+		die(0);
 	}
 
 	/**
@@ -1007,41 +1007,41 @@ 
 	 * @version 4.0.0
 	 * @param array $address
 	 */
-	protected function calculate_shipping( $address = array() ) {
+	protected function calculate_shipping($address = array()) {
 		$country   = $address['country'];
 		$state     = $address['state'];
 		$postcode  = $address['postcode'];
 		$city      = $address['city'];
 		$address_1 = $address['address'];
 		$address_2 = $address['address_2'];
-		$wc_states = WC()->countries->get_states( $country );
+		$wc_states = WC()->countries->get_states($country);
 
 		/**
 		 * In some versions of Chrome, state can be a full name. So we need
 		 * to convert that to abbreviation as WC is expecting that.
 		 */
-		if ( 2 < strlen( $state ) && ! empty( $wc_states ) ) {
-			$state = array_search( ucwords( strtolower( $state ) ), $wc_states, true );
+		if (2 < strlen($state) && ! empty($wc_states)) {
+			$state = array_search(ucwords(strtolower($state)), $wc_states, true);
 		}
 
 		WC()->shipping->reset_shipping();
 
-		if ( $postcode && WC_Validation::is_postcode( $postcode, $country ) ) {
-			$postcode = wc_format_postcode( $postcode, $country );
+		if ($postcode && WC_Validation::is_postcode($postcode, $country)) {
+			$postcode = wc_format_postcode($postcode, $country);
 		}
 
-		if ( $country ) {
-			WC()->customer->set_location( $country, $state, $postcode, $city );
-			WC()->customer->set_shipping_location( $country, $state, $postcode, $city );
+		if ($country) {
+			WC()->customer->set_location($country, $state, $postcode, $city);
+			WC()->customer->set_shipping_location($country, $state, $postcode, $city);
 		} else {
-			WC_Stripe_Helper::is_wc_lt( '3.0' ) ? WC()->customer->set_to_base() : WC()->customer->set_billing_address_to_base();
-			WC_Stripe_Helper::is_wc_lt( '3.0' ) ? WC()->customer->set_shipping_to_base() : WC()->customer->set_shipping_address_to_base();
+			WC_Stripe_Helper::is_wc_lt('3.0') ? WC()->customer->set_to_base() : WC()->customer->set_billing_address_to_base();
+			WC_Stripe_Helper::is_wc_lt('3.0') ? WC()->customer->set_shipping_to_base() : WC()->customer->set_shipping_address_to_base();
 		}
 
-		if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-			WC()->customer->calculated_shipping( true );
+		if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+			WC()->customer->calculated_shipping(true);
 		} else {
-			WC()->customer->set_calculated_shipping( true );
+			WC()->customer->set_calculated_shipping(true);
 			WC()->customer->save();
 		}
 
@@ -1058,17 +1058,17 @@ 
 		$packages[0]['destination']['address']   = $address_1;
 		$packages[0]['destination']['address_2'] = $address_2;
 
-		foreach ( WC()->cart->get_cart() as $item ) {
-			if ( $item['data']->needs_shipping() ) {
-				if ( isset( $item['line_total'] ) ) {
+		foreach (WC()->cart->get_cart() as $item) {
+			if ($item['data']->needs_shipping()) {
+				if (isset($item['line_total'])) {
 					$packages[0]['contents_cost'] += $item['line_total'];
 				}
 			}
 		}
 
-		$packages = apply_filters( 'woocommerce_cart_shipping_packages', $packages );
+		$packages = apply_filters('woocommerce_cart_shipping_packages', $packages);
 
-		WC()->shipping->calculate_shipping( $packages );
+		WC()->shipping->calculate_shipping($packages);
 	}
 
 	/**
@@ -1077,19 +1077,19 @@ 
 	 * @since 3.1.0
 	 * @version 4.0.0
 	 */
-	protected function build_shipping_methods( $shipping_methods ) {
-		if ( empty( $shipping_methods ) ) {
+	protected function build_shipping_methods($shipping_methods) {
+		if (empty($shipping_methods)) {
 			return array();
 		}
 
 		$shipping = array();
 
-		foreach ( $shipping_methods as $method ) {
+		foreach ($shipping_methods as $method) {
 			$shipping[] = array(
 				'id'     => $method['id'],
 				'label'  => $method['label'],
 				'detail' => '',
-				'amount' => WC_Stripe_Helper::get_stripe_amount( $method['amount']['value'] ),
+				'amount' => WC_Stripe_Helper::get_stripe_amount($method['amount']['value']),
 			);
 		}
 
@@ -1103,8 +1103,8 @@ 
 	 * @version 4.0.0
 	 */
 	protected function build_display_items() {
-		if ( ! defined( 'WOOCOMMERCE_CART' ) ) {
-			define( 'WOOCOMMERCE_CART', true );
+		if ( ! defined('WOOCOMMERCE_CART')) {
+			define('WOOCOMMERCE_CART', true);
 		}
 
 		$items     = array();
@@ -1112,71 +1112,71 @@ 
 		$discounts = 0;
 
 		// Default show only subtotal instead of itemization.
-		if ( ! apply_filters( 'wc_stripe_payment_request_hide_itemization', true ) ) {
-			foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
+		if ( ! apply_filters('wc_stripe_payment_request_hide_itemization', true)) {
+			foreach (WC()->cart->get_cart() as $cart_item_key => $cart_item) {
 				$amount         = $cart_item['line_subtotal'];
 				$subtotal      += $cart_item['line_subtotal'];
 				$quantity_label = 1 < $cart_item['quantity'] ? ' (x' . $cart_item['quantity'] . ')' : '';
 
-				$product_name = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $cart_item['data']->post->post_title : $cart_item['data']->get_name();
+				$product_name = WC_Stripe_Helper::is_wc_lt('3.0') ? $cart_item['data']->post->post_title : $cart_item['data']->get_name();
 
 				$item = array(
 					'label'  => $product_name . $quantity_label,
-					'amount' => WC_Stripe_Helper::get_stripe_amount( $amount ),
+					'amount' => WC_Stripe_Helper::get_stripe_amount($amount),
 				);
 
 				$items[] = $item;
 			}
 		}
 
-		if ( version_compare( WC_VERSION, '3.2', '<' ) ) {
-			$discounts = wc_format_decimal( WC()->cart->get_cart_discount_total(), WC()->cart->dp );
+		if (version_compare(WC_VERSION, '3.2', '<')) {
+			$discounts = wc_format_decimal(WC()->cart->get_cart_discount_total(), WC()->cart->dp);
 		} else {
-			$applied_coupons = array_values( WC()->cart->get_coupon_discount_totals() );
+			$applied_coupons = array_values(WC()->cart->get_coupon_discount_totals());
 
-			foreach ( $applied_coupons as $amount ) {
+			foreach ($applied_coupons as $amount) {
 				$discounts += (float) $amount;
 			}
 		}
 
-		$discounts   = wc_format_decimal( $discounts, WC()->cart->dp );
-		$tax         = wc_format_decimal( WC()->cart->tax_total + WC()->cart->shipping_tax_total, WC()->cart->dp );
-		$shipping    = wc_format_decimal( WC()->cart->shipping_total, WC()->cart->dp );
-		$items_total = wc_format_decimal( WC()->cart->cart_contents_total, WC()->cart->dp ) + $discounts;
-		$order_total = version_compare( WC_VERSION, '3.2', '<' ) ? wc_format_decimal( $items_total + $tax + $shipping - $discounts, WC()->cart->dp ) : WC()->cart->get_total( false );
+		$discounts   = wc_format_decimal($discounts, WC()->cart->dp);
+		$tax         = wc_format_decimal(WC()->cart->tax_total + WC()->cart->shipping_tax_total, WC()->cart->dp);
+		$shipping    = wc_format_decimal(WC()->cart->shipping_total, WC()->cart->dp);
+		$items_total = wc_format_decimal(WC()->cart->cart_contents_total, WC()->cart->dp) + $discounts;
+		$order_total = version_compare(WC_VERSION, '3.2', '<') ? wc_format_decimal($items_total + $tax + $shipping - $discounts, WC()->cart->dp) : WC()->cart->get_total(false);
 
-		if ( wc_tax_enabled() ) {
+		if (wc_tax_enabled()) {
 			$items[] = array(
-				'label'  => esc_html( __( 'Tax', 'woocommerce-gateway-stripe' ) ),
-				'amount' => WC_Stripe_Helper::get_stripe_amount( $tax ),
+				'label'  => esc_html(__('Tax', 'woocommerce-gateway-stripe')),
+				'amount' => WC_Stripe_Helper::get_stripe_amount($tax),
 			);
 		}
 
-		if ( WC()->cart->needs_shipping() ) {
+		if (WC()->cart->needs_shipping()) {
 			$items[] = array(
-				'label'  => esc_html( __( 'Shipping', 'woocommerce-gateway-stripe' ) ),
-				'amount' => WC_Stripe_Helper::get_stripe_amount( $shipping ),
+				'label'  => esc_html(__('Shipping', 'woocommerce-gateway-stripe')),
+				'amount' => WC_Stripe_Helper::get_stripe_amount($shipping),
 			);
 		}
 
-		if ( WC()->cart->has_discount() ) {
+		if (WC()->cart->has_discount()) {
 			$items[] = array(
-				'label'  => esc_html( __( 'Discount', 'woocommerce-gateway-stripe' ) ),
-				'amount' => WC_Stripe_Helper::get_stripe_amount( $discounts ),
+				'label'  => esc_html(__('Discount', 'woocommerce-gateway-stripe')),
+				'amount' => WC_Stripe_Helper::get_stripe_amount($discounts),
 			);
 		}
 
-		if ( version_compare( WC_VERSION, '3.2', '<' ) ) {
+		if (version_compare(WC_VERSION, '3.2', '<')) {
 			$cart_fees = WC()->cart->fees;
 		} else {
 			$cart_fees = WC()->cart->get_fees();
 		}
 
 		// Include fees and taxes as display items.
-		foreach ( $cart_fees as $key => $fee ) {
+		foreach ($cart_fees as $key => $fee) {
 			$items[] = array(
 				'label'  => $fee->name,
-				'amount' => WC_Stripe_Helper::get_stripe_amount( $fee->amount ),
+				'amount' => WC_Stripe_Helper::get_stripe_amount($fee->amount),
 			);
 		}
 
@@ -1184,7 +1184,7 @@ 
 			'displayItems' => $items,
 			'total'        => array(
 				'label'   => $this->total_label,
-				'amount'  => max( 0, apply_filters( 'woocommerce_stripe_calculated_total', WC_Stripe_Helper::get_stripe_amount( $order_total ), $order_total, WC()->cart ) ),
+				'amount'  => max(0, apply_filters('woocommerce_stripe_calculated_total', WC_Stripe_Helper::get_stripe_amount($order_total), $order_total, WC()->cart)),
 				'pending' => false,
 			),
 		);