woocommerce / woocommerce-gateway-stripe

includes/class-wc-stripe-apple-pay.php

Spacing +300 added lines, -300 removed lines

@@ -1,5 +1,5 @@ 
 <?php
-if ( ! defined( 'ABSPATH' ) ) {
+if ( ! defined('ABSPATH')) {
 	exit;
 }
 
@@ -96,28 +96,28 @@ 
 	public function __construct() {
 		self::$_this = $this;
 
-		$gateway_settings = get_option( 'woocommerce_stripe_settings', '' );
+		$gateway_settings = get_option('woocommerce_stripe_settings', '');
 
-		$this->statement_descriptor = ! empty( $gateway_settings['statement_descriptor'] ) ? $gateway_settings['statement_descriptor'] : wp_specialchars_decode( get_bloginfo( 'name' ), ENT_QUOTES );
+		$this->statement_descriptor = ! empty($gateway_settings['statement_descriptor']) ? $gateway_settings['statement_descriptor'] : wp_specialchars_decode(get_bloginfo('name'), ENT_QUOTES);
 
 		// If both site title and statement descriptor is not set. Fallback.
-		if ( empty( $this->statement_descriptor ) ) {
+		if (empty($this->statement_descriptor)) {
 			$this->statement_descriptor = $_SERVER['SERVER_NAME'];
 		}
 
-		$this->enabled               = ( ! empty( $gateway_settings['enabled'] ) && 'yes' === $gateway_settings['enabled'] ) ? true : false;
-		$this->testmode              = ( ! empty( $gateway_settings['testmode'] ) && 'yes' === $gateway_settings['testmode'] ) ? true : false;
-		$this->capture               = ( ! empty( $gateway_settings['capture'] ) && 'yes' === $gateway_settings['capture'] ) ? true : false;
-		$this->saved_cards           = ( ! empty( $gateway_settings['saved_cards'] ) && 'yes' === $gateway_settings['saved_cards'] ) ? true : false;
-		$this->apple_pay             = ( ! empty( $gateway_settings['apple_pay'] ) && 'yes' === $gateway_settings['apple_pay'] ) ? true : false;
-		$this->apple_pay_button      = ! empty( $gateway_settings['apple_pay_button'] ) ? $gateway_settings['apple_pay_button'] : 'black';
-		$this->apple_pay_button_lang = ! empty( $gateway_settings['apple_pay_button_lang'] ) ? $gateway_settings['apple_pay_button_lang'] : 'en';
-		$this->logging               = ( ! empty( $gateway_settings['logging'] ) && 'yes' === $gateway_settings['logging'] ) ? true : false;
-		$this->publishable_key       = ! empty( $gateway_settings['publishable_key'] ) ? $gateway_settings['publishable_key'] : '';
+		$this->enabled               = ( ! empty($gateway_settings['enabled']) && 'yes' === $gateway_settings['enabled']) ? true : false;
+		$this->testmode              = ( ! empty($gateway_settings['testmode']) && 'yes' === $gateway_settings['testmode']) ? true : false;
+		$this->capture               = ( ! empty($gateway_settings['capture']) && 'yes' === $gateway_settings['capture']) ? true : false;
+		$this->saved_cards           = ( ! empty($gateway_settings['saved_cards']) && 'yes' === $gateway_settings['saved_cards']) ? true : false;
+		$this->apple_pay             = ( ! empty($gateway_settings['apple_pay']) && 'yes' === $gateway_settings['apple_pay']) ? true : false;
+		$this->apple_pay_button      = ! empty($gateway_settings['apple_pay_button']) ? $gateway_settings['apple_pay_button'] : 'black';
+		$this->apple_pay_button_lang = ! empty($gateway_settings['apple_pay_button_lang']) ? $gateway_settings['apple_pay_button_lang'] : 'en';
+		$this->logging               = ( ! empty($gateway_settings['logging']) && 'yes' === $gateway_settings['logging']) ? true : false;
+		$this->publishable_key       = ! empty($gateway_settings['publishable_key']) ? $gateway_settings['publishable_key'] : '';
 		$this->is_shipping_enabled   = $this->is_shipping_enabled();
 
-		if ( $this->testmode ) {
-			$this->publishable_key = ! empty( $gateway_settings['test_publishable_key'] ) ? $gateway_settings['test_publishable_key'] : '';
+		if ($this->testmode) {
+			$this->publishable_key = ! empty($gateway_settings['test_publishable_key']) ? $gateway_settings['test_publishable_key'] : '';
 		}
 
 		$this->init();
@@ -136,53 +136,53 @@ 
 	 */
 	public function init() {
 		// If Apple Pay is not enabled no need to proceed further.
-		if ( ! $this->apple_pay ) {
+		if ( ! $this->apple_pay) {
 			return;
 		}
 
-		add_action( 'wp_enqueue_scripts', array( $this, 'cart_scripts' ) );
-		add_action( 'wp_enqueue_scripts', array( $this, 'single_scripts' ) );
+		add_action('wp_enqueue_scripts', array($this, 'cart_scripts'));
+		add_action('wp_enqueue_scripts', array($this, 'single_scripts'));
 
 		/**
 		 * In order to display the Apple Pay 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 ( version_compare( WC_VERSION, '3.0.0', '<' ) ) {
-			add_action( 'woocommerce_after_add_to_cart_button', array( $this, 'display_apple_pay_button' ), 1 );
+		if (version_compare(WC_VERSION, '3.0.0', '<')) {
+			add_action('woocommerce_after_add_to_cart_button', array($this, 'display_apple_pay_button'), 1);
 		} else {
-			add_action( 'woocommerce_after_add_to_cart_quantity', array( $this, 'display_apple_pay_button' ), 1 );
+			add_action('woocommerce_after_add_to_cart_quantity', array($this, 'display_apple_pay_button'), 1);
 		}
 
-		add_action( 'woocommerce_proceed_to_checkout', array( $this, 'display_apple_pay_button' ), 1 );
-		add_action( 'woocommerce_proceed_to_checkout', array( $this, 'display_apple_pay_separator_html' ), 2 );
-		add_action( 'woocommerce_checkout_before_customer_details', array( $this, 'display_apple_pay_button' ), 1 );
-		add_action( 'woocommerce_checkout_before_customer_details', array( $this, 'display_apple_pay_separator_html' ), 2 );
-		add_action( 'wc_ajax_wc_stripe_log_apple_pay_errors', array( $this, 'log_apple_pay_errors' ) );
-		add_action( 'wc_ajax_wc_stripe_apple_pay', array( $this, 'process_apple_pay' ) );
-		add_action( 'wc_ajax_wc_stripe_generate_apple_pay_cart', array( $this, 'generate_apple_pay_cart' ) );
-		add_action( 'wc_ajax_wc_stripe_apple_pay_clear_cart', array( $this, 'clear_cart' ) );
-		add_action( 'wc_ajax_wc_stripe_generate_apple_pay_single', array( $this, 'generate_apple_pay_single' ) );
-		add_action( 'wc_ajax_wc_stripe_apple_pay_get_shipping_methods', array( $this, 'get_shipping_methods' ) );
-		add_action( 'wc_ajax_wc_stripe_apple_pay_update_shipping_method', array( $this, 'update_shipping_method' ) );
-		add_filter( 'woocommerce_gateway_title', array( $this, 'filter_gateway_title' ), 10, 2 );
-		add_filter( 'woocommerce_validate_postcode', array( $this, 'postal_code_validation' ), 10, 3 );
+		add_action('woocommerce_proceed_to_checkout', array($this, 'display_apple_pay_button'), 1);
+		add_action('woocommerce_proceed_to_checkout', array($this, 'display_apple_pay_separator_html'), 2);
+		add_action('woocommerce_checkout_before_customer_details', array($this, 'display_apple_pay_button'), 1);
+		add_action('woocommerce_checkout_before_customer_details', array($this, 'display_apple_pay_separator_html'), 2);
+		add_action('wc_ajax_wc_stripe_log_apple_pay_errors', array($this, 'log_apple_pay_errors'));
+		add_action('wc_ajax_wc_stripe_apple_pay', array($this, 'process_apple_pay'));
+		add_action('wc_ajax_wc_stripe_generate_apple_pay_cart', array($this, 'generate_apple_pay_cart'));
+		add_action('wc_ajax_wc_stripe_apple_pay_clear_cart', array($this, 'clear_cart'));
+		add_action('wc_ajax_wc_stripe_generate_apple_pay_single', array($this, 'generate_apple_pay_single'));
+		add_action('wc_ajax_wc_stripe_apple_pay_get_shipping_methods', array($this, 'get_shipping_methods'));
+		add_action('wc_ajax_wc_stripe_apple_pay_update_shipping_method', array($this, 'update_shipping_method'));
+		add_filter('woocommerce_gateway_title', array($this, 'filter_gateway_title'), 10, 2);
+		add_filter('woocommerce_validate_postcode', array($this, 'postal_code_validation'), 10, 3);
 	}
 
 	/**
 	 * Filters the gateway title to reflect Apple Pay.
 	 *
 	 */
-	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;
 		}
 
-		$method_title = get_post_meta( $post->ID, '_payment_method_title', true );
+		$method_title = get_post_meta($post->ID, '_payment_method_title', true);
 
-		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;
 		}
 
@@ -196,13 +196,13 @@ 
 	 * @version 3.1.4
 	 */
 	public function log_apple_pay_errors() {
-		if ( ! wp_verify_nonce( $_POST['nonce'], '_wc_stripe_apple_pay_nonce' ) && ! wp_verify_nonce( $_POST['nonce'], '_wc_stripe_apple_pay_cart_nonce' ) ) {
-			wp_die( __( 'Cheatin&#8217; huh?', 'woocommerce-gateway-stripe' ) );
+		if ( ! wp_verify_nonce($_POST['nonce'], '_wc_stripe_apple_pay_nonce') && ! wp_verify_nonce($_POST['nonce'], '_wc_stripe_apple_pay_cart_nonce')) {
+			wp_die(__('Cheatin&#8217; huh?', 'woocommerce-gateway-stripe'));
 		}
 
-		$errors = wc_clean( stripslashes( $_POST['errors'] ) );
+		$errors = wc_clean(stripslashes($_POST['errors']));
 
-		$this->log( $errors );
+		$this->log($errors);
 
 		exit;
 	}
@@ -213,10 +213,10 @@ 
 	 * @since 3.1.4
 	 * @version 3.1.4
 	 */
-	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 ( ! $this->apple_pay || ! isset( $gateways['stripe'] ) ) {
+		if ( ! $this->apple_pay || ! isset($gateways['stripe'])) {
 			return $valid;
 		}
 
@@ -225,7 +225,7 @@ 
 		 * when passing it back from the shippingcontactselected object. This causes WC to invalidate
 		 * the order and not let it go through. The remedy for now is just to remove this validation.
 		 */
-		if ( 'GB' === $country || 'CA' === $country ) {
+		if ('GB' === $country || 'CA' === $country) {
 			return true;
 		}
 
@@ -240,9 +240,9 @@ 
 	 * @return bool
 	 */
 	public function is_shipping_enabled() {
-		$shipping_enabled = get_option( 'woocommerce_ship_to_countries', '' );
+		$shipping_enabled = get_option('woocommerce_ship_to_countries', '');
 
-		if ( 'disabled' === $shipping_enabled ) {
+		if ('disabled' === $shipping_enabled) {
 			return false;
 		}
 
@@ -256,42 +256,42 @@ 
 	 * @version 3.1.4
 	 */
 	public function single_scripts() {
-		if ( ! is_single() ) {
+		if ( ! is_single()) {
 			return;
 		}
 
 		global $post;
 
-		$product = wc_get_product( $post->ID );
+		$product = wc_get_product($post->ID);
 
-		if ( ! is_object( $product ) || ! in_array( ( version_compare( WC_VERSION, '3.0.0', '<' ) ? $product->product_type : $product->get_type() ), $this->supported_product_types() ) ) {
+		if ( ! is_object($product) || ! in_array((version_compare(WC_VERSION, '3.0.0', '<') ? $product->product_type : $product->get_type()), $this->supported_product_types())) {
 			return;
 		}
 
-		$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
+		$suffix = defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ? '' : '.min';
 
-		wp_enqueue_style( 'stripe_apple_pay', plugins_url( 'assets/css/stripe-apple-pay.css', WC_STRIPE_MAIN_FILE ), array(), WC_STRIPE_VERSION );
+		wp_enqueue_style('stripe_apple_pay', plugins_url('assets/css/stripe-apple-pay.css', WC_STRIPE_MAIN_FILE), array(), WC_STRIPE_VERSION);
 
-		wp_enqueue_script( 'stripe', 'https://js.stripe.com/v2/', '', '1.0', true );
-		wp_enqueue_script( 'woocommerce_stripe_apple_pay_single', plugins_url( 'assets/js/stripe-apple-pay-single' . $suffix . '.js', WC_STRIPE_MAIN_FILE ), array( 'stripe' ), WC_STRIPE_VERSION, true );
+		wp_enqueue_script('stripe', 'https://js.stripe.com/v2/', '', '1.0', true);
+		wp_enqueue_script('woocommerce_stripe_apple_pay_single', plugins_url('assets/js/stripe-apple-pay-single' . $suffix . '.js', WC_STRIPE_MAIN_FILE), array('stripe'), WC_STRIPE_VERSION, true);
 
 		$stripe_params = array(
 			'key'                                           => $this->publishable_key,
 			'currency_code'                                 => get_woocommerce_currency(),
-			'country_code'                                  => substr( get_option( 'woocommerce_default_country' ), 0, 2 ),
+			'country_code'                                  => substr(get_option('woocommerce_default_country'), 0, 2),
 			'label'                                         => $this->statement_descriptor,
-			'ajaxurl'                                       => WC_AJAX::get_endpoint( '%%endpoint%%' ),
-			'stripe_apple_pay_nonce'                        => wp_create_nonce( '_wc_stripe_apple_pay_nonce' ),
-			'stripe_apple_pay_cart_nonce'                   => wp_create_nonce( '_wc_stripe_apple_pay_cart_nonce' ),
-			'stripe_apple_pay_get_shipping_methods_nonce'   => wp_create_nonce( '_wc_stripe_apple_pay_get_shipping_methods_nonce' ),
-			'stripe_apple_pay_update_shipping_method_nonce' => wp_create_nonce( '_wc_stripe_apple_pay_update_shipping_method_nonce' ),
-			'needs_shipping'                                => ( $product->needs_shipping() && $this->is_shipping_enabled ) ? 'yes' : 'no',
+			'ajaxurl'                                       => WC_AJAX::get_endpoint('%%endpoint%%'),
+			'stripe_apple_pay_nonce'                        => wp_create_nonce('_wc_stripe_apple_pay_nonce'),
+			'stripe_apple_pay_cart_nonce'                   => wp_create_nonce('_wc_stripe_apple_pay_cart_nonce'),
+			'stripe_apple_pay_get_shipping_methods_nonce'   => wp_create_nonce('_wc_stripe_apple_pay_get_shipping_methods_nonce'),
+			'stripe_apple_pay_update_shipping_method_nonce' => wp_create_nonce('_wc_stripe_apple_pay_update_shipping_method_nonce'),
+			'needs_shipping'                                => ($product->needs_shipping() && $this->is_shipping_enabled) ? 'yes' : 'no',
 			'i18n'                                          => array(
-				'sub_total' => __( 'Sub-Total', 'woocommerce-gateway-stripe' ),
+				'sub_total' => __('Sub-Total', 'woocommerce-gateway-stripe'),
 			),
 		);
 
-		wp_localize_script( 'woocommerce_stripe_apple_pay_single', 'wc_stripe_apple_pay_single_params', apply_filters( 'wc_stripe_apple_pay_single_params', $stripe_params ) );
+		wp_localize_script('woocommerce_stripe_apple_pay_single', 'wc_stripe_apple_pay_single_params', apply_filters('wc_stripe_apple_pay_single_params', $stripe_params));
 	}
 
 	/**
@@ -301,32 +301,32 @@ 
 	 * @version 3.1.0
 	 */
 	public function cart_scripts() {
-		if ( ! is_cart() && ! is_checkout() && ! isset( $_GET['pay_for_order'] ) ) {
+		if ( ! is_cart() && ! is_checkout() && ! isset($_GET['pay_for_order'])) {
 			return;
 		}
 
-		$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
+		$suffix = defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ? '' : '.min';
 
-		wp_enqueue_style( 'stripe_apple_pay', plugins_url( 'assets/css/stripe-apple-pay.css', WC_STRIPE_MAIN_FILE ), array(), WC_STRIPE_VERSION );
+		wp_enqueue_style('stripe_apple_pay', plugins_url('assets/css/stripe-apple-pay.css', WC_STRIPE_MAIN_FILE), array(), WC_STRIPE_VERSION);
 
-		wp_enqueue_script( 'stripe', 'https://js.stripe.com/v2/', '', '1.0', true );
-		wp_enqueue_script( 'woocommerce_stripe_apple_pay', plugins_url( 'assets/js/stripe-apple-pay' . $suffix . '.js', WC_STRIPE_MAIN_FILE ), array( 'stripe' ), WC_STRIPE_VERSION, true );
+		wp_enqueue_script('stripe', 'https://js.stripe.com/v2/', '', '1.0', true);
+		wp_enqueue_script('woocommerce_stripe_apple_pay', plugins_url('assets/js/stripe-apple-pay' . $suffix . '.js', WC_STRIPE_MAIN_FILE), array('stripe'), WC_STRIPE_VERSION, true);
 
 		$stripe_params = array(
 			'key'                                           => $this->publishable_key,
 			'currency_code'                                 => get_woocommerce_currency(),
-			'country_code'                                  => substr( get_option( 'woocommerce_default_country' ), 0, 2 ),
+			'country_code'                                  => substr(get_option('woocommerce_default_country'), 0, 2),
 			'label'                                         => $this->statement_descriptor,
-			'ajaxurl'                                       => WC_AJAX::get_endpoint( '%%endpoint%%' ),
-			'stripe_apple_pay_nonce'                        => wp_create_nonce( '_wc_stripe_apple_pay_nonce' ),
-			'stripe_apple_pay_cart_nonce'                   => wp_create_nonce( '_wc_stripe_apple_pay_cart_nonce' ),
-			'stripe_apple_pay_get_shipping_methods_nonce'   => wp_create_nonce( '_wc_stripe_apple_pay_get_shipping_methods_nonce' ),
-			'stripe_apple_pay_update_shipping_method_nonce' => wp_create_nonce( '_wc_stripe_apple_pay_update_shipping_method_nonce' ),
-			'needs_shipping'                                => ( WC()->cart->needs_shipping() && $this->is_shipping_enabled ) ? 'yes' : 'no',
+			'ajaxurl'                                       => WC_AJAX::get_endpoint('%%endpoint%%'),
+			'stripe_apple_pay_nonce'                        => wp_create_nonce('_wc_stripe_apple_pay_nonce'),
+			'stripe_apple_pay_cart_nonce'                   => wp_create_nonce('_wc_stripe_apple_pay_cart_nonce'),
+			'stripe_apple_pay_get_shipping_methods_nonce'   => wp_create_nonce('_wc_stripe_apple_pay_get_shipping_methods_nonce'),
+			'stripe_apple_pay_update_shipping_method_nonce' => wp_create_nonce('_wc_stripe_apple_pay_update_shipping_method_nonce'),
+			'needs_shipping'                                => (WC()->cart->needs_shipping() && $this->is_shipping_enabled) ? 'yes' : 'no',
 			'is_cart_page'                                  => is_cart() ? 'yes' : 'no',
 		);
 
-		wp_localize_script( 'woocommerce_stripe_apple_pay', 'wc_stripe_apple_pay_params', apply_filters( 'wc_stripe_apple_pay_params', $stripe_params ) );
+		wp_localize_script('woocommerce_stripe_apple_pay', 'wc_stripe_apple_pay_params', apply_filters('wc_stripe_apple_pay_params', $stripe_params));
 	}
 
 	/**
@@ -337,11 +337,11 @@ 
 	 * @return array
 	 */
 	public function supported_product_types() {
-		return apply_filters( 'wc_stripe_apple_pay_supported_types', array(
+		return apply_filters('wc_stripe_apple_pay_supported_types', array(
 			'simple',
 			'variable',
 			'variation',
-		) );
+		));
 	}
 
 	/**
@@ -353,10 +353,10 @@ 
 	 * @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( ( version_compare( WC_VERSION, '3.0.0', '<' ) ? $_product->product_type : $_product->get_type() ), $this->supported_product_types() ) ) {
+			if ( ! in_array((version_compare(WC_VERSION, '3.0.0', '<') ? $_product->product_type : $_product->get_type()), $this->supported_product_types())) {
 				return false;
 			}
 		}
@@ -377,29 +377,29 @@ 
 		 * In order for the Apple Pay button to show on product detail page,
 		 * Apple Pay must be enabled and Stripe gateway must be enabled.
 		 */
-		if ( ! $this->apple_pay || ! isset( $gateways['stripe'] ) ) {
-			$this->log( 'Apple Pay not enabled or Stripe is not an available gateway ( Apple Pay button disabled )' );
+		if ( ! $this->apple_pay || ! isset($gateways['stripe'])) {
+			$this->log('Apple Pay not enabled or Stripe is not an available gateway ( Apple Pay button disabled )');
 			return;
 		}
 
-		if ( is_single() ) {
+		if (is_single()) {
 			global $post;
 
-			$product = wc_get_product( $post->ID );
+			$product = wc_get_product($post->ID);
 
-			if ( ! is_object( $product ) || ! in_array( ( version_compare( WC_VERSION, '3.0.0', '<' ) ? $product->product_type : $product->get_type() ), $this->supported_product_types() ) ) {
+			if ( ! is_object($product) || ! in_array((version_compare(WC_VERSION, '3.0.0', '<') ? $product->product_type : $product->get_type()), $this->supported_product_types())) {
 				return;
 			}
 		} else {
-			if ( ! $this->allowed_items_in_cart() ) {
-				$this->log( 'Items in the cart has unsupported product type ( Apple Pay button disabled )' );
+			if ( ! $this->allowed_items_in_cart()) {
+				$this->log('Items in the cart has unsupported product type ( Apple Pay button disabled )');
 				return;
 			}
 		}
 
 		?>
 		<div class="apple-pay-button-wrapper">
-			<button class="apple-pay-button" lang="<?php echo esc_attr( $this->apple_pay_button_lang ); ?>" style="-webkit-appearance: -apple-pay-button; -apple-pay-button-type: buy; -apple-pay-button-style: <?php echo esc_attr( $this->apple_pay_button ); ?>;" alt="<?php esc_attr_e( 'Buy with Apple Pay', 'woocommerce-gateway-stripe' ); ?>"></button>
+			<button class="apple-pay-button" lang="<?php echo esc_attr($this->apple_pay_button_lang); ?>" style="-webkit-appearance: -apple-pay-button; -apple-pay-button-type: buy; -apple-pay-button-style: <?php echo esc_attr($this->apple_pay_button); ?>;" alt="<?php esc_attr_e('Buy with Apple Pay', 'woocommerce-gateway-stripe'); ?>"></button>
 		</div>
 		<?php
 	}
@@ -417,17 +417,17 @@ 
 		 * In order for the Apple Pay button to show on cart page,
 		 * Apple Pay must be enabled and Stripe gateway must be enabled.
 		 */
-		if ( ! $this->apple_pay || ! isset( $gateways['stripe'] ) ) {
-			$this->log( 'Apple Pay not enabled or Stripe is not an available gateway ( Apple Pay button disabled )' );
+		if ( ! $this->apple_pay || ! isset($gateways['stripe'])) {
+			$this->log('Apple Pay not enabled or Stripe is not an available gateway ( Apple Pay button disabled )');
 			return;
 		}
 
-		if ( ! $this->allowed_items_in_cart() ) {
-			$this->log( 'Items in the cart has unsupported product type ( Apple Pay button disabled )' );
+		if ( ! $this->allowed_items_in_cart()) {
+			$this->log('Items in the cart has unsupported product type ( Apple Pay button disabled )');
 			return;
 		}
 		?>
-		<p class="apple-pay-button-checkout-separator">- <?php esc_html_e( 'Or', 'woocommerce-gateway-stripe' ); ?> -</p>
+		<p class="apple-pay-button-checkout-separator">- <?php esc_html_e('Or', 'woocommerce-gateway-stripe'); ?> -</p>
 		<?php
 	}
 
@@ -438,51 +438,51 @@ 
 	 * @version 3.1.0
 	 */
 	public function generate_apple_pay_single() {
-		if ( ! wp_verify_nonce( $_POST['nonce'], '_wc_stripe_apple_pay_cart_nonce' ) ) {
-			wp_die( __( 'Cheatin&#8217; huh?', 'woocommerce-gateway-stripe' ) );
+		if ( ! wp_verify_nonce($_POST['nonce'], '_wc_stripe_apple_pay_cart_nonce')) {
+			wp_die(__('Cheatin&#8217; huh?', 'woocommerce-gateway-stripe'));
 		}
 
-		if ( ! defined( 'WOOCOMMERCE_CART' ) ) {
-			define( 'WOOCOMMERCE_CART', true );
+		if ( ! defined('WOOCOMMERCE_CART')) {
+			define('WOOCOMMERCE_CART', true);
 		}
 
 		WC()->shipping->reset_shipping();
 
 		global $post;
 
-		$product = wc_get_product( $post->ID );
-		$qty     = ! isset( $_POST['qty'] ) ? 1 : absint( $_POST['qty'] );
+		$product = wc_get_product($post->ID);
+		$qty     = ! isset($_POST['qty']) ? 1 : absint($_POST['qty']);
 
 		/**
 		 * If this page is single product page, we need to simulate
 		 * adding the product to the cart taken account if it is a
 		 * simple or variable product.
 		 */
-		if ( is_single() ) {
+		if (is_single()) {
 			// First empty the cart to prevent wrong calculation.
 			WC()->cart->empty_cart();
 
-			if ( 'variable' === ( version_compare( WC_VERSION, '3.0.0', '<' ) ? $product->product_type : $product->get_type() ) && isset( $_POST['attributes'] ) ) {
-				$attributes = array_map( 'wc_clean', $_POST['attributes'] );
+			if ('variable' === (version_compare(WC_VERSION, '3.0.0', '<') ? $product->product_type : $product->get_type()) && isset($_POST['attributes'])) {
+				$attributes = array_map('wc_clean', $_POST['attributes']);
 
-				if ( version_compare( WC_VERSION, '3.0.0', '<' ) ) {
-					$variation_id = $product->get_matching_variation( $attributes );
+				if (version_compare(WC_VERSION, '3.0.0', '<')) {
+					$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' === ( version_compare( WC_VERSION, '3.0.0', '<' ) ? $product->product_type : $product->get_type() ) ) {
-				WC()->cart->add_to_cart( $product->get_id(), $qty );
+			if ('simple' === (version_compare(WC_VERSION, '3.0.0', '<') ? $product->product_type : $product->get_type())) {
+				WC()->cart->add_to_cart($product->get_id(), $qty);
 			}
 		}
 
 		WC()->cart->calculate_totals();
 
-		wp_send_json( array( 'line_items' => $this->build_line_items(), 'total' => WC()->cart->total ) );
+		wp_send_json(array('line_items' => $this->build_line_items(), 'total' => WC()->cart->total));
 	}
 
 	/**
@@ -492,11 +492,11 @@ 
 	 * @version 3.1.0
 	 */
 	public function generate_apple_pay_cart() {
-		if ( ! wp_verify_nonce( $_POST['nonce'], '_wc_stripe_apple_pay_cart_nonce' ) ) {
-			wp_die( __( 'Cheatin&#8217; huh?', 'woocommerce-gateway-stripe' ) );
+		if ( ! wp_verify_nonce($_POST['nonce'], '_wc_stripe_apple_pay_cart_nonce')) {
+			wp_die(__('Cheatin&#8217; huh?', 'woocommerce-gateway-stripe'));
 		}
 
-		wp_send_json( array( 'line_items' => $this->build_line_items(), 'total' => WC()->cart->total ) );
+		wp_send_json(array('line_items' => $this->build_line_items(), 'total' => WC()->cart->total));
 	}
 
 	/**
@@ -517,29 +517,29 @@ 
 	 * @version 3.1.0
 	 * @param array $address
 	 */
-	public function calculate_shipping( $address = array() ) {
-		$country  = strtoupper( $address['countryCode'] );
-		$state    = strtoupper( $address['administrativeArea'] );
+	public function calculate_shipping($address = array()) {
+		$country  = strtoupper($address['countryCode']);
+		$state    = strtoupper($address['administrativeArea']);
 		$postcode = $address['postalCode'];
 		$city     = $address['locality'];
 
 		WC()->shipping->reset_shipping();
 
-		if ( $postcode && ! WC_Validation::is_postcode( $postcode, $country ) ) {
-			throw new Exception( __( 'Please enter a valid postcode/ZIP.', 'woocommerce-gateway-stripe' ) );
-		} elseif ( $postcode ) {
-			$postcode = wc_format_postcode( $postcode, $country );
+		if ($postcode && ! WC_Validation::is_postcode($postcode, $country)) {
+			throw new Exception(__('Please enter a valid postcode/ZIP.', 'woocommerce-gateway-stripe'));
+		} elseif ($postcode) {
+			$postcode = wc_format_postcode($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()->customer->set_to_base();
 			WC()->customer->set_shipping_to_base();
 		}
 
-		version_compare( WC_VERSION, '3.0', '<' ) ? WC()->customer->calculated_shipping( true ) : WC()->customer->set_calculated_shipping( true );
+		version_compare(WC_VERSION, '3.0', '<') ? WC()->customer->calculated_shipping(true) : WC()->customer->set_calculated_shipping(true);
 
 		WC()->customer->save();
 
@@ -563,17 +563,17 @@ 
 		$packages[0]['destination']['postcode']  = $postcode;
 		$packages[0]['destination']['city']      = $city;
 
-		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);
 	}
 
 	/**
@@ -583,18 +583,18 @@ 
 	 * @version 3.1.0
 	 */
 	public function get_shipping_methods() {
-		if ( ! wp_verify_nonce( $_POST['nonce'], '_wc_stripe_apple_pay_get_shipping_methods_nonce' ) ) {
-			wp_die( __( 'Cheatin&#8217; huh?', 'woocommerce-gateway-stripe' ) );
+		if ( ! wp_verify_nonce($_POST['nonce'], '_wc_stripe_apple_pay_get_shipping_methods_nonce')) {
+			wp_die(__('Cheatin&#8217; huh?', 'woocommerce-gateway-stripe'));
 		}
 
-		if ( ! defined( 'WOOCOMMERCE_CART' ) ) {
-			define( 'WOOCOMMERCE_CART', true );
+		if ( ! defined('WOOCOMMERCE_CART')) {
+			define('WOOCOMMERCE_CART', true);
 		}
 
 		try {
-			$address = array_map( 'wc_clean', $_POST['address'] );
+			$address = array_map('wc_clean', $_POST['address']);
 
-			$this->calculate_shipping( $address );
+			$this->calculate_shipping($address);
 
 			// Set the shipping options.
 			$currency = get_woocommerce_currency();
@@ -602,13 +602,13 @@ 
 
 			$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[] = array(
 							'id'       => $rate->id,
 							'label'    => $rate->label,
@@ -622,16 +622,16 @@ 
 				}
 
 				// 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();
 
-				wp_send_json( array( 'success' => 'true', 'shipping_methods' => $this->build_shipping_methods( $data ), 'line_items' => $this->build_line_items(), 'total' => WC()->cart->total ) );
+				wp_send_json(array('success' => 'true', 'shipping_methods' => $this->build_shipping_methods($data), 'line_items' => $this->build_line_items(), 'total' => WC()->cart->total));
 			} 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'));
 			}
-		} catch ( Exception $e ) {
-			wp_send_json( array( 'success' => 'false', 'shipping_methods' => array(), 'line_items' => $this->build_line_items(), 'total' => WC()->cart->total ) );
+		} catch (Exception $e) {
+			wp_send_json(array('success' => 'false', 'shipping_methods' => array(), 'line_items' => $this->build_line_items(), 'total' => WC()->cart->total));
 		}
 	}
 
@@ -642,29 +642,29 @@ 
 	 * @version 3.1.0
 	 */
 	public function update_shipping_method() {
-		if ( ! defined( 'WOOCOMMERCE_CART' ) ) {
-			define( 'WOOCOMMERCE_CART', true );
+		if ( ! defined('WOOCOMMERCE_CART')) {
+			define('WOOCOMMERCE_CART', true);
 		}
 
-		if ( ! wp_verify_nonce( $_POST['nonce'], '_wc_stripe_apple_pay_update_shipping_method_nonce' ) ) {
-			wp_die( __( 'Cheatin&#8217; huh?', 'woocommerce-gateway-stripe' ) );
+		if ( ! wp_verify_nonce($_POST['nonce'], '_wc_stripe_apple_pay_update_shipping_method_nonce')) {
+			wp_die(__('Cheatin&#8217; huh?', 'woocommerce-gateway-stripe'));
 		}
 
-		$selected_shipping_method = array_map( 'wc_clean', $_POST['selected_shipping_method'] );
+		$selected_shipping_method = array_map('wc_clean', $_POST['selected_shipping_method']);
 
-		WC()->session->set( 'chosen_shipping_methods', array( $selected_shipping_method['identifier'] ) );
+		WC()->session->set('chosen_shipping_methods', array($selected_shipping_method['identifier']));
 
 		WC()->cart->calculate_totals();
 
 		// Send back the new cart total.
 		$currency  = get_woocommerce_currency();
-		$tax_total = max( 0, round( WC()->cart->tax_total + WC()->cart->shipping_tax_total, WC()->cart->dp ) );
+		$tax_total = max(0, round(WC()->cart->tax_total + WC()->cart->shipping_tax_total, WC()->cart->dp));
 		$data      = array(
 			'total' => WC()->cart->total,
 		);
 
 		// Include fees and taxes as displayItems.
-		foreach ( WC()->cart->fees as $key => $fee ) {
+		foreach (WC()->cart->fees as $key => $fee) {
 			$data['items'][] = array(
 				'label'  => $fee->name,
 				'amount' => array(
@@ -673,9 +673,9 @@ 
 				),
 			);
 		}
-		if ( 0 < $tax_total ) {
+		if (0 < $tax_total) {
 			$data['items'][] = array(
-				'label'  => __( 'Tax', 'woocommerce-gateway-stripe' ),
+				'label'  => __('Tax', 'woocommerce-gateway-stripe'),
 				'amount' => array(
 					'currency' => $currency,
 					'value'    => $tax_total,
@@ -683,7 +683,7 @@ 
 			);
 		}
 
-		wp_send_json( array( 'success' => 'true', 'line_items' => $this->build_line_items(), 'total' => WC()->cart->total ) );
+		wp_send_json(array('success' => 'true', 'line_items' => $this->build_line_items(), 'total' => WC()->cart->total));
 	}
 
 	/**
@@ -694,37 +694,37 @@ 
 	 * @version 3.1.0
 	 */
 	public function process_apple_pay() {
-		if ( ! wp_verify_nonce( $_POST['nonce'], '_wc_stripe_apple_pay_nonce' ) ) {
-			wp_die( __( 'Cheatin&#8217; huh?', 'woocommerce-gateway-stripe' ) );
+		if ( ! wp_verify_nonce($_POST['nonce'], '_wc_stripe_apple_pay_nonce')) {
+			wp_die(__('Cheatin&#8217; huh?', 'woocommerce-gateway-stripe'));
 		}
 
 		try {
-			$result = array_map( 'wc_clean', $_POST['result'] );
+			$result = array_map('wc_clean', $_POST['result']);
 
-			$order = $this->create_order( $result );
+			$order = $this->create_order($result);
 
-			$order_id = version_compare( WC_VERSION, '3.0.0', '<' ) ? $order->id : $order->get_id();
+			$order_id = version_compare(WC_VERSION, '3.0.0', '<') ? $order->id : $order->get_id();
 
 			// Handle payment.
-			if ( $order->get_total() > 0 ) {
+			if ($order->get_total() > 0) {
 
-				if ( $order->get_total() * 100 < WC_Stripe::get_minimum_amount() ) {
-					return new WP_Error( 'stripe_error', sprintf( __( 'Sorry, the minimum allowed order total is %1$s to use this payment method.', 'woocommerce-gateway-stripe' ), wc_price( WC_Stripe::get_minimum_amount() / 100 ) ) );
+				if ($order->get_total() * 100 < WC_Stripe::get_minimum_amount()) {
+					return new WP_Error('stripe_error', sprintf(__('Sorry, the minimum allowed order total is %1$s to use this payment method.', 'woocommerce-gateway-stripe'), wc_price(WC_Stripe::get_minimum_amount() / 100)));
 				}
 
-				$this->log( "Info: Begin processing payment for order {$order_id} for the amount of {$order->get_total()}" );
+				$this->log("Info: Begin processing payment for order {$order_id} for the amount of {$order->get_total()}");
 
 				// Make the request.
-				$response = WC_Stripe_API::request( $this->generate_payment_request( $order, $result['token']['id'] ) );
+				$response = WC_Stripe_API::request($this->generate_payment_request($order, $result['token']['id']));
 
-				if ( is_wp_error( $response ) ) {
+				if (is_wp_error($response)) {
 					$localized_messages = $this->get_localized_messages();
 
-					throw new Exception( ( isset( $localized_messages[ $response->get_error_code() ] ) ? $localized_messages[ $response->get_error_code() ] : $response->get_error_message() ) );
+					throw new Exception((isset($localized_messages[$response->get_error_code()]) ? $localized_messages[$response->get_error_code()] : $response->get_error_message()));
 				}
 
 				// Process valid response.
-				$this->process_response( $response, $order );
+				$this->process_response($response, $order);
 			} else {
 				$order->payment_complete();
 			}
@@ -732,24 +732,24 @@ 
 			// Remove cart.
 			WC()->cart->empty_cart();
 
-			update_post_meta( $order_id, '_customer_user', get_current_user_id() );
-			update_post_meta( $order_id, '_payment_method_title', 'Apple Pay (Stripe)' );
+			update_post_meta($order_id, '_customer_user', get_current_user_id());
+			update_post_meta($order_id, '_payment_method_title', 'Apple Pay (Stripe)');
 
 			// Return thank you page redirect.
-			wp_send_json( array(
+			wp_send_json(array(
 				'success'  => 'true',
-				'redirect' => $this->get_return_url( $order ),
-			) );
+				'redirect' => $this->get_return_url($order),
+			));
 
-		} catch ( Exception $e ) {
-			WC()->session->set( 'refresh_totals', true );
-			$this->log( sprintf( __( 'Error: %s', 'woocommerce-gateway-stripe' ), $e->getMessage() ) );
+		} catch (Exception $e) {
+			WC()->session->set('refresh_totals', true);
+			$this->log(sprintf(__('Error: %s', 'woocommerce-gateway-stripe'), $e->getMessage()));
 
-			if ( is_object( $order ) && isset( $order_id ) && $order->has_status( array( 'pending', 'failed' ) ) ) {
-				$this->send_failed_order_email( $order_id );
+			if (is_object($order) && isset($order_id) && $order->has_status(array('pending', 'failed'))) {
+				$this->send_failed_order_email($order_id);
 			}
 
-			wp_send_json( array( 'success' => 'false', 'msg' => $e->getMessage() ) );
+			wp_send_json(array('success' => 'false', 'msg' => $e->getMessage()));
 		}
 	}
 
@@ -759,16 +759,16 @@ 
 	 * @param string $source token
 	 * @return array()
 	 */
-	protected function generate_payment_request( $order, $source ) {
+	protected function generate_payment_request($order, $source) {
 		$post_data                = array();
-		$post_data['currency']    = strtolower( version_compare( WC_VERSION, '3.0.0', '<' ) ? $order->get_order_currency() : $order->get_currency() );
-		$post_data['amount']      = $this->get_stripe_amount( $order->get_total(), $post_data['currency'] );
-		$post_data['description'] = sprintf( __( '%1$s - Order %2$s', 'woocommerce-gateway-stripe' ), $this->statement_descriptor, $order->get_order_number() );
+		$post_data['currency']    = strtolower(version_compare(WC_VERSION, '3.0.0', '<') ? $order->get_order_currency() : $order->get_currency());
+		$post_data['amount']      = $this->get_stripe_amount($order->get_total(), $post_data['currency']);
+		$post_data['description'] = sprintf(__('%1$s - Order %2$s', 'woocommerce-gateway-stripe'), $this->statement_descriptor, $order->get_order_number());
 		$post_data['capture']     = $this->capture ? 'true' : 'false';
 
-		$billing_email      = version_compare( WC_VERSION, '3.0.0', '<' ) ? $order->billing_email : $order->get_billing_email();
+		$billing_email = version_compare(WC_VERSION, '3.0.0', '<') ? $order->billing_email : $order->get_billing_email();
 
-		if ( ! empty( $billing_email ) && apply_filters( 'wc_stripe_send_stripe_receipt', false ) ) {
+		if ( ! empty($billing_email) && apply_filters('wc_stripe_send_stripe_receipt', false)) {
 			$post_data['receipt_email'] = $billing_email;
 		}
 
@@ -783,7 +783,7 @@ 
 		 * @param WC_Order $order
 		 * @param object $source
 		 */
-		return apply_filters( 'wc_stripe_generate_payment_request', $post_data, $order );
+		return apply_filters('wc_stripe_generate_payment_request', $post_data, $order);
 	}
 
 	/**
@@ -792,14 +792,14 @@ 
 	 * @since 3.1.0
 	 * @version 3.1.0
 	 */
-	public function build_shipping_methods( $shipping_methods ) {
-		if ( empty( $shipping_methods ) ) {
+	public function build_shipping_methods($shipping_methods) {
+		if (empty($shipping_methods)) {
 			return array();
 		}
 
 		$shipping = array();
 
-		foreach ( $shipping_methods as $method ) {
+		foreach ($shipping_methods as $method) {
 			$shipping[] = array(
 				'label'      => $method['label'],
 				'detail'     => '',
@@ -818,67 +818,67 @@ 
 	 * @version 3.1.0
 	 */
 	public function build_line_items() {
-		if ( ! defined( 'WOOCOMMERCE_CART' ) ) {
-			define( 'WOOCOMMERCE_CART', true );
+		if ( ! defined('WOOCOMMERCE_CART')) {
+			define('WOOCOMMERCE_CART', true);
 		}
 
-		$decimals = apply_filters( 'wc_stripe_apple_pay_decimals', 2 );
+		$decimals = apply_filters('wc_stripe_apple_pay_decimals', 2);
 		
 		$items    = array();
 		$subtotal = 0;
 
-		foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
-			$amount         = wc_format_decimal( $cart_item['line_subtotal'], $decimals );
-			$subtotal       += $cart_item['line_subtotal'];
+		foreach (WC()->cart->get_cart() as $cart_item_key => $cart_item) {
+			$amount         = wc_format_decimal($cart_item['line_subtotal'], $decimals);
+			$subtotal += $cart_item['line_subtotal'];
 			$quantity_label = 1 < $cart_item['quantity'] ? ' (x' . $cart_item['quantity'] . ')' : '';
 
-			$product_name = version_compare( WC_VERSION, '3.0', '<' ) ? $cart_item['data']->post->post_title : $cart_item['data']->get_name();
+			$product_name = version_compare(WC_VERSION, '3.0', '<') ? $cart_item['data']->post->post_title : $cart_item['data']->get_name();
 
 			$item = array(
 				'type'   => 'final',
 				'label'  => $product_name . $quantity_label,
-				'amount' => wc_format_decimal( $amount, $decimals ),
+				'amount' => wc_format_decimal($amount, $decimals),
 			);
 
 			$items[] = $item;
 		}
 
 		// Default show only subtotal instead of itemization.
-		if ( apply_filters( 'wc_stripe_apple_pay_disable_itemization', true ) ) {
+		if (apply_filters('wc_stripe_apple_pay_disable_itemization', true)) {
 			$items = array();
 			$items[] = array(
 				'type'   => 'final',
-				'label'  => esc_html( __( 'Sub-Total', 'woocommerce-gateway-stripe' ) ),
-				'amount' => wc_format_decimal( $subtotal, $decimals ),
+				'label'  => esc_html(__('Sub-Total', 'woocommerce-gateway-stripe')),
+				'amount' => wc_format_decimal($subtotal, $decimals),
 			);
 		}
 
-		$discounts   = wc_format_decimal( WC()->cart->get_cart_discount_total(), $decimals );
-		$tax         = wc_format_decimal( WC()->cart->tax_total + WC()->cart->shipping_tax_total, $decimals );
-		$shipping    = wc_format_decimal( WC()->cart->shipping_total, $decimals );
-		$item_total  = wc_format_decimal( WC()->cart->cart_contents_total, $decimals ) + $discounts;
-		$order_total = wc_format_decimal( $item_total + $tax + $shipping, $decimals );
+		$discounts   = wc_format_decimal(WC()->cart->get_cart_discount_total(), $decimals);
+		$tax         = wc_format_decimal(WC()->cart->tax_total + WC()->cart->shipping_tax_total, $decimals);
+		$shipping    = wc_format_decimal(WC()->cart->shipping_total, $decimals);
+		$item_total  = wc_format_decimal(WC()->cart->cart_contents_total, $decimals) + $discounts;
+		$order_total = wc_format_decimal($item_total + $tax + $shipping, $decimals);
 
-		if ( wc_tax_enabled() ) {
+		if (wc_tax_enabled()) {
 			$items[] = array(
 				'type'   => 'final',
-				'label'  => esc_html( __( 'Tax', 'woocommerce-gateway-stripe' ) ),
+				'label'  => esc_html(__('Tax', 'woocommerce-gateway-stripe')),
 				'amount' => $tax,
 			);
 		}
 
-		if ( WC()->cart->needs_shipping() && $this->is_shipping_enabled ) {
+		if (WC()->cart->needs_shipping() && $this->is_shipping_enabled) {
 			$items[] = array(
 				'type'   => 'final',
-				'label'  => esc_html( __( 'Shipping', 'woocommerce-gateway-stripe' ) ),
+				'label'  => esc_html(__('Shipping', 'woocommerce-gateway-stripe')),
 				'amount' => $shipping,
 			);
 		}
 
-		if ( WC()->cart->has_discount() ) {
+		if (WC()->cart->has_discount()) {
 			$items[] = array(
 				'type'   => 'final',
-				'label'  => esc_html( __( 'Discount', 'woocommerce-gateway-stripe' ) ),
+				'label'  => esc_html(__('Discount', 'woocommerce-gateway-stripe')),
 				'amount' => '-' . $discounts,
 			);
 		}
@@ -894,24 +894,24 @@ 
 	 * @param array $data
 	 * @return object $order
 	 */
-	public function create_order( $data = array() ) {
-		if ( empty( $data ) ) {
-			throw new Exception( sprintf( __( 'Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe' ), 520 ) );
+	public function create_order($data = array()) {
+		if (empty($data)) {
+			throw new Exception(sprintf(__('Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe'), 520));
 		}
 
 		$order = wc_create_order();
-		$order_id = version_compare( WC_VERSION, '3.0.0', '<' ) ? $order->id : $order->get_id();
+		$order_id = version_compare(WC_VERSION, '3.0.0', '<') ? $order->id : $order->get_id();
 
-		if ( is_wp_error( $order ) ) {
-			throw new Exception( sprintf( __( 'Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe' ), 520 ) );
-		} elseif ( false === $order ) {
-			throw new Exception( sprintf( __( 'Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe' ), 521 ) );
+		if (is_wp_error($order)) {
+			throw new Exception(sprintf(__('Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe'), 520));
+		} elseif (false === $order) {
+			throw new Exception(sprintf(__('Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe'), 521));
 		} else {
-			do_action( 'woocommerce_new_order', $order_id );
+			do_action('woocommerce_new_order', $order_id);
 		}
 
 		// Store the line items to the new/resumed order
-		foreach ( WC()->cart->get_cart() as $cart_item_key => $values ) {
+		foreach (WC()->cart->get_cart() as $cart_item_key => $values) {
 			$item_id = $order->add_product(
 				$values['data'],
 				$values['quantity'],
@@ -927,25 +927,25 @@ 
 				)
 			);
 
-			if ( ! $item_id ) {
-				throw new Exception( sprintf( __( 'Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe' ), 525 ) );
+			if ( ! $item_id) {
+				throw new Exception(sprintf(__('Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe'), 525));
 			}
 
 			// Allow plugins to add order item meta
-			if ( version_compare( WC_VERSION, '3.0', '<' ) ) {
-				do_action( 'woocommerce_add_order_item_meta', $item_id, $values, $cart_item_key );
+			if (version_compare(WC_VERSION, '3.0', '<')) {
+				do_action('woocommerce_add_order_item_meta', $item_id, $values, $cart_item_key);
 			} else {
-				do_action( 'woocommerce_new_order_item', $item_id, wc_get_product( $item_id ), $order->get_id() );
+				do_action('woocommerce_new_order_item', $item_id, wc_get_product($item_id), $order->get_id());
 			}
 		}
 
 		// Store fees
-		foreach ( WC()->cart->get_fees() as $fee_key => $fee ) {
-			if ( version_compare( WC_VERSION, '3.0', '<' ) ) {
-				$item_id = $order->add_fee( $fee );
+		foreach (WC()->cart->get_fees() as $fee_key => $fee) {
+			if (version_compare(WC_VERSION, '3.0', '<')) {
+				$item_id = $order->add_fee($fee);
 			} else {
 				$item = new WC_Order_Item_Fee();
-				$item->set_props( array(
+				$item->set_props(array(
 					'name'      => $fee->name,
 					'tax_class' => $fee->taxable ? $fee->tax_class : 0,
 					'total'     => $fee->amount,
@@ -954,79 +954,79 @@ 
 						'total' => $fee->tax_data,
 					),
 					'order_id'  => $order->get_id(),
-				) );
+				));
 				$item_id = $item->save();
-				$order->add_item( $item );
+				$order->add_item($item);
 			}
 
-			if ( ! $item_id ) {
-				throw new Exception( sprintf( __( 'Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe' ), 526 ) );
+			if ( ! $item_id) {
+				throw new Exception(sprintf(__('Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe'), 526));
 			}
 
 			// Allow plugins to add order item meta to fees
-			if ( version_compare( WC_VERSION, '3.0', '<' ) ) {
-				do_action( 'woocommerce_add_order_fee_meta', $order_id, $item_id, $fee, $fee_key );
+			if (version_compare(WC_VERSION, '3.0', '<')) {
+				do_action('woocommerce_add_order_fee_meta', $order_id, $item_id, $fee, $fee_key);
 			} else {
-				do_action( 'woocommerce_new_order_item', $item_id, $fee, $order->get_id() );
+				do_action('woocommerce_new_order_item', $item_id, $fee, $order->get_id());
 			}
 		}
 
 		// Store tax rows
-		foreach ( array_keys( WC()->cart->taxes + WC()->cart->shipping_taxes ) as $tax_rate_id ) {
-			$tax_amount = WC()->cart->get_tax_amount( $tax_rate_id );
-			$shipping_tax_amount = WC()->cart->get_shipping_tax_amount( $tax_rate_id );
+		foreach (array_keys(WC()->cart->taxes + WC()->cart->shipping_taxes) as $tax_rate_id) {
+			$tax_amount = WC()->cart->get_tax_amount($tax_rate_id);
+			$shipping_tax_amount = WC()->cart->get_shipping_tax_amount($tax_rate_id);
 
-			if ( version_compare( WC_VERSION, '3.0', '<' ) ) {
-				$item_id = $order->add_tax( $tax_rate_id, $tax_amount, $shipping_tax_amount );
+			if (version_compare(WC_VERSION, '3.0', '<')) {
+				$item_id = $order->add_tax($tax_rate_id, $tax_amount, $shipping_tax_amount);
 			} else {
 				$item = new WC_Order_Item_Tax();
-				$item->set_props( array(
+				$item->set_props(array(
 					'rate_id'            => $tax_rate_id,
 					'tax_total'          => $tax_amount,
 					'shipping_tax_total' => $shipping_tax_amount,
-				) );
-				$item->set_rate( $tax_rate_id );
-				$item->set_order_id( $order->get_id() );
+				));
+				$item->set_rate($tax_rate_id);
+				$item->set_order_id($order->get_id());
 				$item_id = $item->save();
-				$order->add_item( $item );
+				$order->add_item($item);
 			}
 
-			if ( $tax_rate_id && ! $item_id && apply_filters( 'woocommerce_cart_remove_taxes_zero_rate_id', 'zero-rated' ) !== $tax_rate_id ) {
-				throw new Exception( sprintf( __( 'Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe' ), 528 ) );
+			if ($tax_rate_id && ! $item_id && apply_filters('woocommerce_cart_remove_taxes_zero_rate_id', 'zero-rated') !== $tax_rate_id) {
+				throw new Exception(sprintf(__('Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe'), 528));
 			}
 		}
 
 		// Store coupons
-		$discount = WC()->cart->get_coupon_discount_amount( $code );
-		$discount_tax = WC()->cart->get_coupon_discount_tax_amount( $code );
+		$discount = WC()->cart->get_coupon_discount_amount($code);
+		$discount_tax = WC()->cart->get_coupon_discount_tax_amount($code);
 
-		foreach ( WC()->cart->get_coupons() as $code => $coupon ) {
-			if ( version_compare( WC_VERSION, '3.0', '<' ) ) {
-				$coupon_id = $order->add_coupon( $code, $discount, $discount_tax );
+		foreach (WC()->cart->get_coupons() as $code => $coupon) {
+			if (version_compare(WC_VERSION, '3.0', '<')) {
+				$coupon_id = $order->add_coupon($code, $discount, $discount_tax);
 			} else {
 				$item = new WC_Order_Item_Coupon();
-				$item->set_props( array(
+				$item->set_props(array(
 					'code'         => $code,
 					'discount'     => $discount,
 					'discount_tax' => $discount_tax,
 					'order_id'     => $order->get_id(),
-				) );
+				));
 				$coupon_id = $item->save();
-				$order->add_item( $item );
+				$order->add_item($item);
 			}
 
-			if ( ! $coupon_id ) {
-				throw new Exception( sprintf( __( 'Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe' ), 529 ) );
+			if ( ! $coupon_id) {
+				throw new Exception(sprintf(__('Error %d: Unable to create order. Please try again.', 'woocommerce-gateway-stripe'), 529));
 			}
 		}
 
 		// Billing address
 		$billing_address = array();
-		if ( ! empty( $data['token']['card'] ) ) {
+		if ( ! empty($data['token']['card'])) {
 			// Name from Stripe is a full name string.
-			$name                          = explode( ' ', $data['token']['card']['name'] );
-			$lastname                      = array_pop( $name );
-			$firstname                     = implode( ' ', $name );
+			$name                          = explode(' ', $data['token']['card']['name']);
+			$lastname                      = array_pop($name);
+			$firstname                     = implode(' ', $name);
 			$billing_address['first_name'] = $firstname;
 			$billing_address['last_name']  = $lastname;
 			$billing_address['email']      = $data['shippingContact']['emailAddress'];
@@ -1041,7 +1041,7 @@ 
 
 		// Shipping address.
 		$shipping_address = array();
-		if ( WC()->cart->needs_shipping() && $this->is_shipping_enabled && ! empty( $data['shippingContact'] ) ) {
+		if (WC()->cart->needs_shipping() && $this->is_shipping_enabled && ! empty($data['shippingContact'])) {
 			$shipping_address['first_name'] = $data['shippingContact']['givenName'];
 			$shipping_address['last_name']  = $data['shippingContact']['familyName'];
 			$shipping_address['email']      = $data['shippingContact']['emailAddress'];
@@ -1052,7 +1052,7 @@ 
 			$shipping_address['city']       = $data['shippingContact']['locality'];
 			$shipping_address['state']      = $data['shippingContact']['administrativeArea'];
 			$shipping_address['postcode']   = $data['shippingContact']['postalCode'];
-		} elseif ( ! empty( $data['shippingContact'] ) ) {
+		} elseif ( ! empty($data['shippingContact'])) {
 			$shipping_address['first_name'] = $firstname;
 			$shipping_address['last_name']  = $lastname;
 			$shipping_address['email']      = $data['shippingContact']['emailAddress'];
@@ -1065,33 +1065,33 @@ 
 			$shipping_address['postcode']   = $data['token']['card']['address_zip'];
 		}
 
-		$order->set_address( $billing_address, 'billing' );
-		$order->set_address( $shipping_address, 'shipping' );
+		$order->set_address($billing_address, 'billing');
+		$order->set_address($shipping_address, 'shipping');
 
-		WC()->shipping->calculate_shipping( WC()->cart->get_shipping_packages() );
+		WC()->shipping->calculate_shipping(WC()->cart->get_shipping_packages());
 
 		// Get the rate object selected by user.
-		foreach ( WC()->shipping->get_packages() as $package_key => $package ) {
-			foreach ( $package['rates'] as $key => $rate ) {
+		foreach (WC()->shipping->get_packages() as $package_key => $package) {
+			foreach ($package['rates'] as $key => $rate) {
 				// Loop through user chosen shipping methods.
-				foreach ( WC()->session->get( 'chosen_shipping_methods' ) as $method ) {
-					if ( $method === $key ) {
-						if ( version_compare( WC_VERSION, '3.0', '<' ) ) {
-							$order->add_shipping( $rate );
+				foreach (WC()->session->get('chosen_shipping_methods') as $method) {
+					if ($method === $key) {
+						if (version_compare(WC_VERSION, '3.0', '<')) {
+							$order->add_shipping($rate);
 						} else {
 							$item = new WC_Order_Item_Shipping();
-							$item->set_props( array(
+							$item->set_props(array(
 								'method_title' => $rate->label,
 								'method_id'    => $rate->id,
-								'total'        => wc_format_decimal( $rate->cost ),
+								'total'        => wc_format_decimal($rate->cost),
 								'taxes'        => $rate->taxes,
 								'order_id'     => $order->get_id(),
-							) );
-							foreach ( $rate->get_meta_data() as $key => $value ) {
-								$item->add_meta_data( $key, $value, true );
+							));
+							foreach ($rate->get_meta_data() as $key => $value) {
+								$item->add_meta_data($key, $value, true);
 							}
 							$item->save();
-							$order->add_item( $item );
+							$order->add_item($item);
 						}
 					}
 				}
@@ -1099,27 +1099,27 @@ 
 		}
 
 		$available_gateways = WC()->payment_gateways->get_available_payment_gateways();
-		$order->set_payment_method( $available_gateways['stripe'] );
+		$order->set_payment_method($available_gateways['stripe']);
 		
-		if ( version_compare( WC_VERSION, '3.0', '<' ) ) {
-			$order->set_total( WC()->cart->shipping_total, 'shipping' );
-			$order->set_total( WC()->cart->get_cart_discount_total(), 'cart_discount' );
-			$order->set_total( WC()->cart->get_cart_discount_tax_total(), 'cart_discount_tax' );
-			$order->set_total( WC()->cart->tax_total, 'tax' );
-			$order->set_total( WC()->cart->shipping_tax_total, 'shipping_tax' );
-			$order->set_total( WC()->cart->total );
+		if (version_compare(WC_VERSION, '3.0', '<')) {
+			$order->set_total(WC()->cart->shipping_total, 'shipping');
+			$order->set_total(WC()->cart->get_cart_discount_total(), 'cart_discount');
+			$order->set_total(WC()->cart->get_cart_discount_tax_total(), 'cart_discount_tax');
+			$order->set_total(WC()->cart->tax_total, 'tax');
+			$order->set_total(WC()->cart->shipping_tax_total, 'shipping_tax');
+			$order->set_total(WC()->cart->total);
 		} else {
-			$order->set_shipping_total( WC()->cart->shipping_total );
-			$order->set_discount_total( WC()->cart->get_cart_discount_total() );
-			$order->set_discount_tax( WC()->cart->get_cart_discount_tax_total() );
-			$order->set_cart_tax( WC()->cart->tax_total );
-			$order->set_shipping_tax( WC()->cart->shipping_tax_total );
-			$order->set_total( WC()->cart->total );
+			$order->set_shipping_total(WC()->cart->shipping_total);
+			$order->set_discount_total(WC()->cart->get_cart_discount_total());
+			$order->set_discount_tax(WC()->cart->get_cart_discount_tax_total());
+			$order->set_cart_tax(WC()->cart->tax_total);
+			$order->set_shipping_tax(WC()->cart->shipping_tax_total);
+			$order->set_total(WC()->cart->total);
 			$order->save();
 		}
 
 		// If we got here, the order was created without problems!
-		wc_transaction_query( 'commit' );
+		wc_transaction_query('commit');
 
 		return $order;
 	}
@@ -1132,9 +1132,9 @@ 
 	 *
 	 * @param string $message
 	 */
-	public function log( $message ) {
-		if ( $this->logging ) {
-			WC_Stripe::log( 'Apple Pay: ' . $message );
+	public function log($message) {
+		if ($this->logging) {
+			WC_Stripe::log('Apple Pay: ' . $message);
 		}
 	}
 }

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

Spacing +84 added lines, -84 removed lines

@@ -7,7 +7,7 @@ 
  * @version 3.1.0
  */
 
-if ( ! defined( 'ABSPATH' ) ) {
+if ( ! defined('ABSPATH')) {
 	exit;
 }
 
@@ -20,12 +20,12 @@ 
 	 * Initialize class actions.
 	 */
 	public function __construct() {
-		add_action( 'wp_enqueue_scripts', array( $this, 'scripts' ) );
+		add_action('wp_enqueue_scripts', array($this, 'scripts'));
 
-		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( $this, 'ajax_create_order' ) );
+		add_action('wc_ajax_wc_stripe_get_cart_details', array($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'));
 	}
 
 	/**
@@ -34,10 +34,10 @@ 
 	 * @return bool
 	 */
 	protected function is_activated() {
-		$options             = get_option( 'woocommerce_stripe_settings', array() );
-		$enabled             = isset( $options['enabled'] ) && 'yes' === $options['enabled'];
-		$stripe_checkout     = isset( $options['stripe_checkout'] ) && 'yes' !== $options['stripe_checkout'];
-		$request_payment_api = isset( $options['request_payment_api'] ) && 'yes' === $options['request_payment_api'];
+		$options             = get_option('woocommerce_stripe_settings', array());
+		$enabled             = isset($options['enabled']) && 'yes' === $options['enabled'];
+		$stripe_checkout     = isset($options['stripe_checkout']) && 'yes' !== $options['stripe_checkout'];
+		$request_payment_api = isset($options['request_payment_api']) && 'yes' === $options['request_payment_api'];
 
 		return $enabled && $stripe_checkout && $request_payment_api && is_ssl();
 	}
@@ -48,9 +48,9 @@ 
 	 * @return string
 	 */
 	protected function get_publishable_key() {
-		$options = get_option( 'woocommerce_stripe_settings', array() );
+		$options = get_option('woocommerce_stripe_settings', array());
 
-		if ( empty( $options ) ) {
+		if (empty($options)) {
 			return '';
 		}
 
@@ -62,39 +62,39 @@ 
 	 */
 	public function scripts() {
 		// Load PaymentRequest only on cart for now.
-		if ( ! is_cart() ) {
+		if ( ! is_cart()) {
 			return;
 		}
 
-		if ( ! $this->is_activated() ) {
+		if ( ! $this->is_activated()) {
 			return;
 		}
 
-		$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
+		$suffix = defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ? '' : '.min';
 
-		wp_enqueue_script( 'stripe', 'https://js.stripe.com/v2/', '', '1.0', true );
-		wp_enqueue_script( 'google-payment-request-shim', 'https://storage.googleapis.com/prshim/v1/payment-shim.js', '', '1.0', false );
-		wp_enqueue_script( 'wc-stripe-payment-request', plugins_url( 'assets/js/payment-request' . $suffix . '.js', WC_STRIPE_MAIN_FILE ), array( 'jquery', 'stripe' ), WC_STRIPE_VERSION, true );
+		wp_enqueue_script('stripe', 'https://js.stripe.com/v2/', '', '1.0', true);
+		wp_enqueue_script('google-payment-request-shim', 'https://storage.googleapis.com/prshim/v1/payment-shim.js', '', '1.0', false);
+		wp_enqueue_script('wc-stripe-payment-request', plugins_url('assets/js/payment-request' . $suffix . '.js', WC_STRIPE_MAIN_FILE), array('jquery', 'stripe'), WC_STRIPE_VERSION, true);
 
 		wp_localize_script(
 			'wc-stripe-payment-request',
 			'wcStripePaymentRequestParams',
 			array(
-				'ajax_url' => WC_AJAX::get_endpoint( '%%endpoint%%' ),
+				'ajax_url' => WC_AJAX::get_endpoint('%%endpoint%%'),
 				'stripe'   => array(
 					'key'                => $this->get_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' ),
+					'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'),
 				),
 				'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'),
 				),
 			)
 		);
@@ -104,10 +104,10 @@ 
 	 * 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();
@@ -119,18 +119,18 @@ 
 			'shipping_required' => WC()->cart->needs_shipping(),
 			'order_data'        => array(
 				'total' => array(
-					'label'  => __( 'Total', 'woocommerce-gateway-stripe' ),
+					'label'  => __('Total', 'woocommerce-gateway-stripe'),
 					'amount' => array(
-						'value'    => max( 0, apply_filters( 'woocommerce_calculated_total', round( WC()->cart->cart_contents_total + WC()->cart->fee_total + WC()->cart->tax_total, WC()->cart->dp ), WC()->cart ) ),
+						'value'    => max(0, apply_filters('woocommerce_calculated_total', round(WC()->cart->cart_contents_total + WC()->cart->fee_total + WC()->cart->tax_total, WC()->cart->dp), WC()->cart)),
 						'currency' => $currency,
 					),
 				),
 				// Include line items such as subtotal, fees and taxes. No shipping option is provided here because it is not chosen yet.
-				'displayItems' => $this->compute_display_items( null ),
+				'displayItems' => $this->compute_display_items(null),
 			),
 		);
 
-		wp_send_json( $data );
+		wp_send_json($data);
 	}
 
 	/**
@@ -140,7 +140,7 @@ 
 	 * @version 3.1.0
 	 * @param array $address
 	 */
-	public function calculate_shipping( $address = array() ) {
+	public function calculate_shipping($address = array()) {
 		$country   = $address['country'];
 		$state     = $address['state'];
 		$postcode  = $address['postcode'];
@@ -150,19 +150,19 @@ 
 
 		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()->customer->set_to_base();
 			WC()->customer->set_shipping_to_base();
 		}
 
-		version_compare( WC_VERSION, '3.0', '<' ) ? WC()->customer->calculated_shipping( true ) : WC()->customer->set_calculated_shipping( true );
+		version_compare(WC_VERSION, '3.0', '<') ? WC()->customer->calculated_shipping(true) : WC()->customer->set_calculated_shipping(true);
 
 		WC()->customer->save();
 
@@ -179,17 +179,17 @@ 
 		$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);
 	}
 
 	/**
@@ -200,19 +200,19 @@ 
 	 * @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');
 
 		// Set the shipping package.
-		$posted   = filter_input_array( INPUT_POST, array(
+		$posted = filter_input_array(INPUT_POST, array(
 			'country'   => FILTER_SANITIZE_STRING,
 			'state'     => FILTER_SANITIZE_STRING,
 			'postcode'  => FILTER_SANITIZE_STRING,
 			'city'      => FILTER_SANITIZE_STRING,
 			'address'   => FILTER_SANITIZE_STRING,
 			'address_2' => FILTER_SANITIZE_STRING,
-		) );
+		));
 
-		$this->calculate_shipping( $posted );
+		$this->calculate_shipping($posted);
 
 		// Set the shipping options.
 		$currency = get_woocommerce_currency();
@@ -220,13 +220,13 @@ 
 
 		$packages = WC()->shipping->get_packages();
 
-		if ( ! empty( $packages ) && WC()->customer->has_calculated_shipping() ) {
-			foreach ( $packages as $package_key => $package ) {
-				if ( empty( $package['rates'] ) ) {
+		if ( ! empty($packages) && WC()->customer->has_calculated_shipping()) {
+			foreach ($packages as $package_key => $package) {
+				if (empty($package['rates'])) {
 					break;
 				}
 
-				foreach ( $package['rates'] as $key => $rate ) {
+				foreach ($package['rates'] as $key => $rate) {
 					$data[] = array(
 						'id'       => $rate->id,
 						'label'    => $rate->label,
@@ -241,60 +241,60 @@ 
 		}
 
 		// Auto select when have only one shipping method available.
-		if ( 1 === count( $data ) ) {
+		if (1 === count($data)) {
 			$data[0]['selected'] = true;
 		}
 
-		wp_send_json( $data );
+		wp_send_json($data);
 	}
 
 	/**
 	 * 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();
 
 		// Send back the new cart total and line items to be displayed, such as subtotal, shipping rate(s), fees and taxes.
-		$data      = array(
+		$data = array(
 			'total' => WC()->cart->total,
-			'items' => $this->compute_display_items( $shipping_method[0] ),
+			'items' => $this->compute_display_items($shipping_method[0]),
 		);
 
-		wp_send_json( $data );
+		wp_send_json($data);
 	}
 
 	/**
 	 * Create order.
 	 */
 	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);
 		}
 
 		WC()->checkout()->process_checkout();
 
-		die( 0 );
+		die(0);
 	}
 
 	/**
@@ -302,26 +302,26 @@ 
 	 *
 	 * @param string shipping_method_id If shipping method ID is provided, will include display items about shipping.
 	 */
-	protected function compute_display_items( $shipping_method_id ) {
+	protected function compute_display_items($shipping_method_id) {
 		$currency = get_woocommerce_currency();
 		$items = array(
 			// Subtotal excluding tax, because taxes is a separate item, below.
 			array(
-				'label' => __( 'Subtotal', 'woocommerce-gateway-stripe' ),
+				'label' => __('Subtotal', 'woocommerce-gateway-stripe'),
 				'amount' => array(
-					'value'    => max( 0, round( WC()->cart->subtotal_ex_tax, WC()->cart->dp ) ),
+					'value'    => max(0, round(WC()->cart->subtotal_ex_tax, WC()->cart->dp)),
 					'currency' => $currency,
 				),
 			),
 		);
 		// If a chosen shipping option was provided, add line item(s) for it and include the shipping tax.
-		$tax_total = max( 0, round( WC()->cart->tax_total, WC()->cart->dp ) );
-		if ( $shipping_method_id ) {
-			$tax_total = max( 0, round( WC()->cart->tax_total + WC()->cart->shipping_tax_total, WC()->cart->dp ) );
+		$tax_total = max(0, round(WC()->cart->tax_total, WC()->cart->dp));
+		if ($shipping_method_id) {
+			$tax_total = max(0, round(WC()->cart->tax_total + WC()->cart->shipping_tax_total, WC()->cart->dp));
 			// Look through the package rates for $shipping_method_id, and when found, add a line item.
-			foreach ( WC()->shipping->get_packages() as $package_key => $package ) {
-				foreach ( $package['rates'] as $key => $rate ) {
-					if ( $rate->id  == $shipping_method_id ) {
+			foreach (WC()->shipping->get_packages() as $package_key => $package) {
+				foreach ($package['rates'] as $key => $rate) {
+					if ($rate->id == $shipping_method_id) {
 						$items[] = array(
 							'label' => $rate->label,
 							'amount' => array(
@@ -335,7 +335,7 @@ 
 			}
 		}
 		// Include fees and taxes as display items.
-		foreach ( WC()->cart->fees as $key => $fee ) {
+		foreach (WC()->cart->fees as $key => $fee) {
 			$items[] = array(
 				'label'  => $fee->name,
 				'amount' => array(
@@ -345,9 +345,9 @@ 
 			);
 		}
 		// The tax total may include the shipping taxes if a shipping option is provided.
-		if ( 0 < $tax_total ) {
+		if (0 < $tax_total) {
 			$items[] = array(
-				'label'  => __( 'Tax', 'woocommerce-gateway-stripe' ),
+				'label'  => __('Tax', 'woocommerce-gateway-stripe'),
 				'amount' => array(
 					'currency' => $currency,
 					'value'    => $tax_total,