woocommerce / woocommerce-gateway-stripe

includes/payment-methods/class-wc-gateway-stripe-sepa.php

Spacing +95 added lines, -95 removed lines

@@ -1,5 +1,5 @@ 
 <?php
-if ( ! defined( 'ABSPATH' ) ) {
+if ( ! defined('ABSPATH')) {
 	exit;
 }
 
@@ -72,9 +72,9 @@ 
 	public function __construct() {
 		$this->retry_interval       = 1;
 		$this->id                   = 'stripe_sepa';
-		$this->method_title         = __( 'Stripe SEPA Direct Debit', 'woocommerce-gateway-stripe' );
+		$this->method_title         = __('Stripe SEPA Direct Debit', 'woocommerce-gateway-stripe');
 		/* translators: link */
-		$this->method_description   = sprintf( __( 'All other general Stripe settings can be adjusted <a href="%s">here</a>.', 'woocommerce-gateway-stripe' ), admin_url( 'admin.php?page=wc-settings&tab=checkout&section=stripe' ) );
+		$this->method_description   = sprintf(__('All other general Stripe settings can be adjusted <a href="%s">here</a>.', 'woocommerce-gateway-stripe'), admin_url('admin.php?page=wc-settings&tab=checkout&section=stripe'));
 		$this->supports             = array(
 			'products',
 			'refunds',
@@ -99,28 +99,28 @@ 
 		// Load the settings.
 		$this->init_settings();
 
-		$main_settings              = get_option( 'woocommerce_stripe_settings' );
-		$this->title                = $this->get_option( 'title' );
-		$this->description          = $this->get_option( 'description' );
-		$this->enabled              = $this->get_option( 'enabled' );
-		$this->testmode             = ( ! empty( $main_settings['testmode'] ) && 'yes' === $main_settings['testmode'] ) ? true : false;
-		$this->saved_cards          = ( ! empty( $main_settings['saved_cards'] ) && 'yes' === $main_settings['saved_cards'] ) ? true : false;
-		$this->publishable_key      = ! empty( $main_settings['publishable_key'] ) ? $main_settings['publishable_key'] : '';
-		$this->secret_key           = ! empty( $main_settings['secret_key'] ) ? $main_settings['secret_key'] : '';
-		$this->statement_descriptor = ! empty( $main_settings['statement_descriptor'] ) ? $main_settings['statement_descriptor'] : '';
-
-		if ( $this->testmode ) {
-			$this->publishable_key = ! empty( $main_settings['test_publishable_key'] ) ? $main_settings['test_publishable_key'] : '';
-			$this->secret_key      = ! empty( $main_settings['test_secret_key'] ) ? $main_settings['test_secret_key'] : '';
+		$main_settings              = get_option('woocommerce_stripe_settings');
+		$this->title                = $this->get_option('title');
+		$this->description          = $this->get_option('description');
+		$this->enabled              = $this->get_option('enabled');
+		$this->testmode             = ( ! empty($main_settings['testmode']) && 'yes' === $main_settings['testmode']) ? true : false;
+		$this->saved_cards          = ( ! empty($main_settings['saved_cards']) && 'yes' === $main_settings['saved_cards']) ? true : false;
+		$this->publishable_key      = ! empty($main_settings['publishable_key']) ? $main_settings['publishable_key'] : '';
+		$this->secret_key           = ! empty($main_settings['secret_key']) ? $main_settings['secret_key'] : '';
+		$this->statement_descriptor = ! empty($main_settings['statement_descriptor']) ? $main_settings['statement_descriptor'] : '';
+
+		if ($this->testmode) {
+			$this->publishable_key = ! empty($main_settings['test_publishable_key']) ? $main_settings['test_publishable_key'] : '';
+			$this->secret_key      = ! empty($main_settings['test_secret_key']) ? $main_settings['test_secret_key'] : '';
 		}
 
-		add_action( 'woocommerce_update_options_payment_gateways_' . $this->id, array( $this, 'process_admin_options' ) );
-		add_action( 'wp_enqueue_scripts', array( $this, 'payment_scripts' ) );
+		add_action('woocommerce_update_options_payment_gateways_' . $this->id, array($this, 'process_admin_options'));
+		add_action('wp_enqueue_scripts', array($this, 'payment_scripts'));
 
-		if ( WC_Stripe_Helper::is_pre_orders_exists() ) {
+		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'));
 		}
 	}
 
@@ -132,9 +132,9 @@ 
 	 * @return array
 	 */
 	public function get_supported_currency() {
-		return apply_filters( 'wc_stripe_sepa_supported_currencies', array(
+		return apply_filters('wc_stripe_sepa_supported_currencies', array(
 			'EUR',
-		) );
+		));
 	}
 
 	/**
@@ -145,11 +145,11 @@ 
 	 * @return bool
 	 */
 	public function is_available() {
-		if ( ! in_array( get_woocommerce_currency(), $this->get_supported_currency() ) ) {
+		if ( ! in_array(get_woocommerce_currency(), $this->get_supported_currency())) {
 			return false;
 		}
 
-		if ( is_add_payment_method_page() && ! $this->saved_cards ) {
+		if (is_add_payment_method_page() && ! $this->saved_cards) {
 			return false;
 		}
 
@@ -170,7 +170,7 @@ 
 
 		$icons_str .= $icons['sepa'];
 
-		return apply_filters( 'woocommerce_gateway_icon', $icons_str, $this->id );
+		return apply_filters('woocommerce_gateway_icon', $icons_str, $this->id);
 	}
 
 	/**
@@ -181,19 +181,19 @@ 
 	 * @access public
 	 */
 	public function payment_scripts() {
-		if ( ! is_cart() && ! is_checkout() && ! isset( $_GET['pay_for_order'] ) && ! is_add_payment_method_page() ) {
+		if ( ! is_cart() && ! is_checkout() && ! isset($_GET['pay_for_order']) && ! is_add_payment_method_page()) {
 			return;
 		}
 
-		wp_enqueue_style( 'stripe_styles' );
-		wp_enqueue_script( 'woocommerce_stripe' );
+		wp_enqueue_style('stripe_styles');
+		wp_enqueue_script('woocommerce_stripe');
 	}
 
 	/**
 	 * Initialize Gateway Settings Form Fields.
 	 */
 	public function init_form_fields() {
-		$this->form_fields = require( WC_STRIPE_PLUGIN_PATH . '/includes/admin/stripe-sepa-settings.php' );
+		$this->form_fields = require(WC_STRIPE_PLUGIN_PATH . '/includes/admin/stripe-sepa-settings.php');
 	}
 
 	/**
@@ -205,7 +205,7 @@ 
 	 */
 	public function mandate_display() {
 		/* translators: statement descriptor */
-		printf( __( 'By providing your IBAN and confirming this payment, you are authorizing %s and Stripe, our payment service provider, to send instructions to your bank to debit your account and your bank to debit your account in accordance with those instructions. You are entitled to a refund from your bank under the terms and conditions of your agreement with your bank. A refund must be claimed within 8 weeks starting from the date on which your account was debited.', 'woocommerce-gateway-stripe' ), WC_Stripe_Helper::clean_statement_descriptor( $this->statement_descriptor ) );
+		printf(__('By providing your IBAN and confirming this payment, you are authorizing %s and Stripe, our payment service provider, to send instructions to your bank to debit your account and your bank to debit your account in accordance with those instructions. You are entitled to a refund from your bank under the terms and conditions of your agreement with your bank. A refund must be claimed within 8 weeks starting from the date on which your account was debited.', 'woocommerce-gateway-stripe'), WC_Stripe_Helper::clean_statement_descriptor($this->statement_descriptor));
 	}
 
 	/**
@@ -216,12 +216,12 @@ 
 	 */
 	public function form() {
 		?>
-		<fieldset id="wc-<?php echo esc_attr( $this->id ); ?>-form" class="wc-payment-form">
-			<?php do_action( 'woocommerce_credit_card_form_start', $this->id ); ?>
+		<fieldset id="wc-<?php echo esc_attr($this->id); ?>-form" class="wc-payment-form">
+			<?php do_action('woocommerce_credit_card_form_start', $this->id); ?>
 			<p class="wc-stripe-sepa-mandate" style="margin-bottom:40px;"><?php $this->mandate_display(); ?></p>
 			<p class="form-row form-row-wide">
 				<label for="stripe-iban-element">
-					<?php esc_html_e( 'IBAN.', 'woocommerce-gateway-stripe' ); ?> <span class="required">*</span>
+					<?php esc_html_e('IBAN.', 'woocommerce-gateway-stripe'); ?> <span class="required">*</span>
 				</label>
 				<div id="stripe-iban-element" class="wc-stripe-iban-element-field">
 					<!-- A Stripe Element will be inserted here. -->
@@ -231,7 +231,7 @@ 
 			<!-- 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
@@ -242,40 +242,40 @@ 
 	 */
 	public function payment_fields() {
 		$total                = WC()->cart->total;
-		$display_tokenization = $this->supports( 'tokenization' ) && is_checkout() && $this->saved_cards;
+		$display_tokenization = $this->supports('tokenization') && is_checkout() && $this->saved_cards;
 		$description          = $this->get_description() ? $this->get_description() : '';
 
 		// 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();
 		}
 
-		if ( is_add_payment_method_page() ) {
+		if (is_add_payment_method_page()) {
 			$total = '';
 		}
 
 		echo '<div
 			id="stripe-sepa_debit-payment-data"
-			data-amount="' . esc_attr( WC_Stripe_Helper::get_stripe_amount( $total ) ) . '"
-			data-currency="' . esc_attr( strtolower( get_woocommerce_currency() ) ) . '">';
+			data-amount="' . esc_attr(WC_Stripe_Helper::get_stripe_amount($total)) . '"
+			data-currency="' . esc_attr(strtolower(get_woocommerce_currency())) . '">';
 
-		if ( $description ) {
-			if ( $this->testmode ) {
-				$description .= ' ' . __( 'TEST MODE ENABLED. In test mode, you can use IBAN number DE89370400440532013000.', 'woocommerce-gateway-stripe' );
-				$description  = trim( $description );
+		if ($description) {
+			if ($this->testmode) {
+				$description .= ' ' . __('TEST MODE ENABLED. In test mode, you can use IBAN number DE89370400440532013000.', 'woocommerce-gateway-stripe');
+				$description  = trim($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();
 		}
 
 		$this->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'])) {
 			$this->save_payment_method_checkbox();
 		}
 
@@ -293,99 +293,99 @@ 
 	 *
 	 * @return array|void
 	 */
-	public function process_payment( $order_id, $retry = true, $force_save_source = false ) {
+	public function process_payment($order_id, $retry = true, $force_save_source = false) {
 		try {
-			$order = wc_get_order( $order_id );
+			$order = wc_get_order($order_id);
 
-			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 ( $create_account ) {
+			if ($create_account) {
 				$new_customer_id     = WC_Stripe_Helper::is_pre_30() ? $order->customer_user : $order->get_customer_id();
-				$new_stripe_customer = new WC_Stripe_Customer( $new_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);
 
-			$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);
 
-				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()}");
 
 				// 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_pre_30() ) {
-							delete_user_meta( $order->customer_user, '_stripe_customer_id' );
-							delete_post_meta( $order_id, '_stripe_customer_id' );
+					if ($this->is_no_such_customer_error($response->error)) {
+						if (WC_Stripe_Helper::is_pre_30()) {
+							delete_user_meta($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 ) {
+							if (5 <= $this->retry_interval) {
 
-								return $this->process_payment( $order_id, false, $force_save_source );
+								return $this->process_payment($order_id, false, $force_save_source);
 							}
 
-							sleep( $this->retry_interval );
+							sleep($this->retry_interval);
 
 							$this->retry_interval++;
 
-							return $this->process_payment( $order_id, true, $force_save_source );
+							return $this->process_payment($order_id, true, $force_save_source);
 						} 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();
 			}
@@ -396,17 +396,17 @@ 
 			// 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);
 
-			if ( $order->has_status( array( 'pending', 'failed' ) ) ) {
-				$this->send_failed_order_email( $order_id );
+			if ($order->has_status(array('pending', 'failed'))) {
+				$this->send_failed_order_email($order_id);
 			}
 
 			return array(

includes/class-wc-gateway-stripe.php

Spacing +268 added lines, -268 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' );
-		}
-
-		WC_Stripe_API::set_secret_key( $this->secret_key );
+		$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);
 
 		// 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');
 	}
 
 	/**
@@ -240,20 +240,20 @@ 
 		$icons_str .= $icons['amex'];
 		$icons_str .= $icons['mastercard'];
 
-		if ( 'USD' === get_woocommerce_currency() ) {
+		if ('USD' === get_woocommerce_currency()) {
 			$icons_str .= $icons['discover'];
 			$icons_str .= $icons['jcb'];
 			$icons_str .= $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');
 	}
 
 	/**
@@ -261,7 +261,7 @@ 
 	 */
 	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() ? $this->get_description() : '';
@@ -269,26 +269,26 @@ 
 		$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_pre_30() ? $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' );
-			$total        = '';
+		} elseif (function_exists('wcs_order_contains_subscription') && isset($_GET['change_payment_method'])) {
+			$pay_button_text = __('Change Payment Method', 'woocommerce-gateway-stripe');
+			$total = '';
 		} else {
 			$pay_button_text = '';
 		}
@@ -297,45 +297,45 @@ 
 
 		echo '<div
 			id="stripe-payment-data"
-			data-panel-label="' . esc_attr( $pay_button_text ) . '"
-			data-description="' . esc_attr( strip_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 ( $description ) {
-			if ( $this->testmode ) {
+			data-panel-label="' . esc_attr($pay_button_text) . '"
+			data-description="' . esc_attr(strip_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 ($description) {
+			if ($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  = trim( $description );
+				$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);
 			}
 
-			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();
 			}
 		}
@@ -353,12 +353,12 @@ 
 	 */
 	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">
@@ -366,7 +366,7 @@ 
 				</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. -->
@@ -377,7 +377,7 @@ 
 				</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. -->
@@ -385,7 +385,7 @@ 
 				</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>
@@ -395,7 +395,7 @@ 
 
 			<!-- Used to display form errors -->
 			<div class="stripe-source-errors" role="alert"></div>
-			<?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
@@ -408,13 +408,13 @@ 
 	 * @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);
 	}
 
 	/**
@@ -426,59 +426,59 @@ 
 	 * @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');
 
-		if ( 'storefront' === $current_theme->get_template() ) {
-			wp_register_style( 'stripe_storefront_styles', plugins_url( 'assets/css/stripe-storefront-styles.css', WC_STRIPE_MAIN_FILE ), array(), WC_STRIPE_VERSION );
-			wp_enqueue_style( 'stripe_storefront_styles' );
+		if ('storefront' === $current_theme->get_template()) {
+			wp_register_style('stripe_storefront_styles', plugins_url('assets/css/stripe-storefront-styles.css', WC_STRIPE_MAIN_FILE), array(), WC_STRIPE_VERSION);
+			wp_enqueue_style('stripe_storefront_styles');
 		}
 
-		if ( 'twentyseventeen' === $current_theme->get_template() ) {
-			wp_register_style( 'stripe_twentyseventeen_styles', plugins_url( 'assets/css/stripe-twentyseventeen-styles.css', WC_STRIPE_MAIN_FILE ), array(), WC_STRIPE_VERSION );
-			wp_enqueue_style( 'stripe_twentyseventeen_styles' );
+		if ('twentyseventeen' === $current_theme->get_template()) {
+			wp_register_style('stripe_twentyseventeen_styles', plugins_url('assets/css/stripe-twentyseventeen-styles.css', WC_STRIPE_MAIN_FILE), array(), WC_STRIPE_VERSION);
+			wp_enqueue_style('stripe_twentyseventeen_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( $order_id );
+		if (isset($_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( $order, 'WC_Order' ) ) {
+			if (is_a($order, 'WC_Order')) {
 				$stripe_params['billing_first_name'] = WC_Stripe_Helper::is_pre_30() ? $order->billing_first_name : $order->get_billing_first_name();
 				$stripe_params['billing_last_name']  = WC_Stripe_Helper::is_pre_30() ? $order->billing_last_name : $order->get_billing_last_name();
 				$stripe_params['billing_address_1']  = WC_Stripe_Helper::is_pre_30() ? $order->billing_address_1 : $order->get_billing_address_1();
@@ -490,40 +490,40 @@ 
 			}
 		}
 
-		$stripe_params['no_prepaid_card_msg']                     = __( 'Sorry, we\'re not accepting prepaid cards at this time. Your credit card has not been charge. 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 charge. 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['sepa_elements_options']                   = apply_filters( 'wc_stripe_sepa_elements_options', array( 'supportedCountries' => array( 'SEPA' ), 'placeholderCountry' => WC()->countries->get_base_country(), 'style' => array( 'base' => array( 'fontSize' => '15px' ) ) ) );
-		$stripe_params['invalid_owner_name']                      = __( 'Billing First Name and Last Name are required.', 'woocommerce-gateway-stripe' );
+		$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'), 'placeholderCountry' => WC()->countries->get_base_country(), 'style' => array('base' => array('fontSize' => '15px'))));
+		$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_pre_30() ? $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( strip_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( $order_id ) . '" />';
+			data-panel-label="' . esc_attr(apply_filters('wc_stripe_checkout_label', '')) . '"
+			data-description="' . esc_attr(strip_tags($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
 		);
 	}
@@ -668,54 +668,54 @@ 
 	 *
 	 * @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 ( $create_account ) {
+			if ($create_account) {
 				$new_customer_id     = WC_Stripe_Helper::is_pre_30() ? $order->customer_user : $order->get_customer_id();
-				$new_stripe_customer = new WC_Stripe_Customer( $new_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);
 			$source_object   = $prepared_source->source_object;
 
 			// Check if we don't allow prepaid credit cards.
-			if ( ! apply_filters( 'wc_stripe_allow_prepaid_card', true ) && $this->is_prepaid_card( $source_object ) ) {
-				$localized_message = __( 'Sorry, we\'re not accepting prepaid cards at this time. Your credit card has not been charge. Please try with alternative payment method.', 'woocommerce-gateway-stripe' );
-				throw new WC_Stripe_Exception( print_r( $source_object, true ), $localized_message );
+			if ( ! apply_filters('wc_stripe_allow_prepaid_card', true) && $this->is_prepaid_card($source_object)) {
+				$localized_message = __('Sorry, we\'re not accepting prepaid cards at this time. Your credit card has not been charge. Please try with alternative payment method.', 'woocommerce-gateway-stripe');
+				throw new WC_Stripe_Exception(print_r($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.
@@ -724,22 +724,22 @@ 
 				 * 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( $source_object ) ) {
-					$response = $this->create_3ds_source( $order, $source_object );
+				if ($this->is_3ds_required($source_object)) {
+					$response = $this->create_3ds_source($order, $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_pre_30() ) {
-						update_post_meta( $order_id, '_stripe_source_id', $response->id );
+					if (WC_Stripe_Helper::is_pre_30()) {
+						update_post_meta($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();
 					}
 
@@ -747,87 +747,87 @@ 
 					 * 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),
 						);
 					}
 				}
 
-				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( $source_object, $previous_error ) ) {
-					add_filter( 'wc_stripe_idempotency_key', array( $this, 'change_idempotency_key' ), 10, 2 );
+				if ($this->need_update_idempotency_key($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_pre_30() ) {
-							delete_user_meta( $order->customer_user, '_stripe_customer_id' );
-							delete_post_meta( $order_id, '_stripe_customer_id' );
+					if ($this->is_no_such_customer_error($response->error)) {
+						if (WC_Stripe_Helper::is_pre_30()) {
+							delete_user_meta($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();
 			}
@@ -838,17 +838,17 @@ 
 			// 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',
@@ -864,17 +864,17 @@ 
 	 *
 	 * @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;
 		}
 
@@ -882,12 +882,12 @@ 
 
 		<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>
 
@@ -901,17 +901,17 @@ 
 	 *
 	 * @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;
 		}
 
@@ -919,12 +919,12 @@ 
 
 		<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>