woocommerce / woocommerce-gateway-stripe

includes/class-wc-stripe-customer.php

Doc Comments -2 removed lines

@@ -173,7 +173,6 @@ 
 	 * Updates the Stripe customer through the API.
 	 *
 	 * @param array $args  Additional arguments for the request (optional).
-	 * @param bool  $retry Number of retries on error (optional, defaults to 0). If greater than 0, then an exception will be thrown instead of further retries on error.
 	 *
 	 * @return string Customer ID
 	 *
@@ -326,7 +325,6 @@ 
 	/**
 	 * Get a customers saved sources using their Stripe ID.
 	 *
-	 * @param  string $customer_id
 	 * @return array
 	 */
 	public function get_sources() {

Spacing +111 added lines, -111 removed lines

@@ -1,5 +1,5 @@ 
 <?php
-if ( ! defined( 'ABSPATH' ) ) {
+if ( ! defined('ABSPATH')) {
 	exit;
 }
 
@@ -32,10 +32,10 @@ 
 	 * Constructor
 	 * @param int $user_id The WP user ID
 	 */
-	public function __construct( $user_id = 0 ) {
-		if ( $user_id ) {
-			$this->set_user_id( $user_id );
-			$this->set_id( $this->get_id_from_meta( $user_id ) );
+	public function __construct($user_id = 0) {
+		if ($user_id) {
+			$this->set_user_id($user_id);
+			$this->set_id($this->get_id_from_meta($user_id));
 		}
 	}
 
@@ -51,15 +51,15 @@ 
 	 * Set Stripe customer ID.
 	 * @param [type] $id [description]
 	 */
-	public function set_id( $id ) {
+	public function set_id($id) {
 		// Backwards compat for customer ID stored in array format. (Pre 3.0)
-		if ( is_array( $id ) && isset( $id['customer_id'] ) ) {
+		if (is_array($id) && isset($id['customer_id'])) {
 			$id = $id['customer_id'];
 
-			$this->update_id_in_meta( $id );
+			$this->update_id_in_meta($id);
 		}
 
-		$this->id = wc_clean( $id );
+		$this->id = wc_clean($id);
 	}
 
 	/**
@@ -67,15 +67,15 @@ 
 	 * @return int
 	 */
 	public function get_user_id() {
-		return absint( $this->user_id );
+		return absint($this->user_id);
 	}
 
 	/**
 	 * Set User ID used by WordPress.
 	 * @param int $user_id
 	 */
-	public function set_user_id( $user_id ) {
-		$this->user_id = absint( $user_id );
+	public function set_user_id($user_id) {
+		$this->user_id = absint($user_id);
 	}
 
 	/**
@@ -83,13 +83,13 @@ 
 	 * @return WP_User
 	 */
 	protected function get_user() {
-		return $this->get_user_id() ? get_user_by( 'id', $this->get_user_id() ) : false;
+		return $this->get_user_id() ? get_user_by('id', $this->get_user_id()) : false;
 	}
 
 	/**
 	 * Store data from the Stripe API about this customer
 	 */
-	public function set_customer_data( $data ) {
+	public function set_customer_data($data) {
 		$this->customer_data = $data;
 	}
 
@@ -99,37 +99,37 @@ 
 	 * @param  array $args Additional arguments (optional).
 	 * @return array
 	 */
-	protected function generate_customer_request( $args = array() ) {
-		$billing_email = isset( $_POST['billing_email'] ) ? filter_var( $_POST['billing_email'], FILTER_SANITIZE_EMAIL ) : '';
+	protected function generate_customer_request($args = array()) {
+		$billing_email = isset($_POST['billing_email']) ? filter_var($_POST['billing_email'], FILTER_SANITIZE_EMAIL) : '';
 		$user          = $this->get_user();
 
-		if ( $user ) {
-			$billing_first_name = get_user_meta( $user->ID, 'billing_first_name', true );
-			$billing_last_name  = get_user_meta( $user->ID, 'billing_last_name', true );
+		if ($user) {
+			$billing_first_name = get_user_meta($user->ID, 'billing_first_name', true);
+			$billing_last_name  = get_user_meta($user->ID, 'billing_last_name', true);
 
 			// If billing first name does not exists try the user first name.
-			if ( empty( $billing_first_name ) ) {
-				$billing_first_name = get_user_meta( $user->ID, 'first_name', true );
+			if (empty($billing_first_name)) {
+				$billing_first_name = get_user_meta($user->ID, 'first_name', true);
 			}
 
 			// If billing last name does not exists try the user last name.
-			if ( empty( $billing_last_name ) ) {
-				$billing_last_name = get_user_meta( $user->ID, 'last_name', true );
+			if (empty($billing_last_name)) {
+				$billing_last_name = get_user_meta($user->ID, 'last_name', true);
 			}
 
 			// translators: %1$s First name, %2$s Second name, %3$s Username.
-			$description = sprintf( __( 'Name: %1$s %2$s, Username: %s', 'woocommerce-gateway-stripe' ), $billing_first_name, $billing_last_name, $user->user_login );
+			$description = sprintf(__('Name: %1$s %2$s, Username: %s', 'woocommerce-gateway-stripe'), $billing_first_name, $billing_last_name, $user->user_login);
 
 			$defaults = array(
 				'email'       => $user->user_email,
 				'description' => $description,
 			);
 		} else {
-			$billing_first_name = isset( $_POST['billing_first_name'] ) ? filter_var( wp_unslash( $_POST['billing_first_name'] ), FILTER_SANITIZE_STRING ) : ''; // phpcs:ignore WordPress.Security.NonceVerification
-			$billing_last_name  = isset( $_POST['billing_last_name'] ) ? filter_var( wp_unslash( $_POST['billing_last_name'] ), FILTER_SANITIZE_STRING ) : ''; // phpcs:ignore WordPress.Security.NonceVerification
+			$billing_first_name = isset($_POST['billing_first_name']) ? filter_var(wp_unslash($_POST['billing_first_name']), FILTER_SANITIZE_STRING) : ''; // phpcs:ignore WordPress.Security.NonceVerification
+			$billing_last_name  = isset($_POST['billing_last_name']) ? filter_var(wp_unslash($_POST['billing_last_name']), FILTER_SANITIZE_STRING) : ''; // phpcs:ignore WordPress.Security.NonceVerification
 
 			// translators: %1$s First name, %2$s Second name.
-			$description = sprintf( __( 'Name: %1$s %2$s, Guest', 'woocommerce-gateway-stripe' ), $billing_first_name, $billing_last_name );
+			$description = sprintf(__('Name: %1$s %2$s, Guest', 'woocommerce-gateway-stripe'), $billing_first_name, $billing_last_name);
 
 			$defaults = array(
 				'email'       => $billing_email,
@@ -138,9 +138,9 @@ 
 		}
 
 		$metadata             = array();
-		$defaults['metadata'] = apply_filters( 'wc_stripe_customer_metadata', $metadata, $user );
+		$defaults['metadata'] = apply_filters('wc_stripe_customer_metadata', $metadata, $user);
 
-		return wp_parse_args( $args, $defaults );
+		return wp_parse_args($args, $defaults);
 	}
 
 	/**
@@ -148,23 +148,23 @@ 
 	 * @param array $args
 	 * @return WP_Error|int
 	 */
-	public function create_customer( $args = array() ) {
-		$args     = $this->generate_customer_request( $args );
-		$response = WC_Stripe_API::request( apply_filters( 'wc_stripe_create_customer_args', $args ), 'customers' );
+	public function create_customer($args = array()) {
+		$args     = $this->generate_customer_request($args);
+		$response = WC_Stripe_API::request(apply_filters('wc_stripe_create_customer_args', $args), 'customers');
 
-		if ( ! empty( $response->error ) ) {
-			throw new WC_Stripe_Exception( print_r( $response, true ), $response->error->message );
+		if ( ! empty($response->error)) {
+			throw new WC_Stripe_Exception(print_r($response, true), $response->error->message);
 		}
 
-		$this->set_id( $response->id );
+		$this->set_id($response->id);
 		$this->clear_cache();
-		$this->set_customer_data( $response );
+		$this->set_customer_data($response);
 
-		if ( $this->get_user_id() ) {
-			$this->update_id_in_meta( $response->id );
+		if ($this->get_user_id()) {
+			$this->update_id_in_meta($response->id);
 		}
 
-		do_action( 'woocommerce_stripe_add_customer', $args, $response );
+		do_action('woocommerce_stripe_add_customer', $args, $response);
 
 		return $response->id;
 	}
@@ -179,51 +179,51 @@ 
 	 *
 	 * @throws WC_Stripe_Exception
 	 */
-	public function update_customer( $args = array(), $retries = 0 ) {
-		if ( empty( $this->get_id() ) ) {
-			throw new WC_Stripe_Exception( 'id_required_to_update_user', __( 'Attempting to update a Stripe customer without a customer ID.', 'woocommerce-gateway-stripe' ) );
+	public function update_customer($args = array(), $retries = 0) {
+		if (empty($this->get_id())) {
+			throw new WC_Stripe_Exception('id_required_to_update_user', __('Attempting to update a Stripe customer without a customer ID.', 'woocommerce-gateway-stripe'));
 		}
 
-		$args     = $this->generate_customer_request( $args );
-		$args     = apply_filters( 'wc_stripe_update_customer_args', $args );
-		$response = WC_Stripe_API::request( $args, 'customers/' . $this->get_id() );
+		$args     = $this->generate_customer_request($args);
+		$args     = apply_filters('wc_stripe_update_customer_args', $args);
+		$response = WC_Stripe_API::request($args, 'customers/' . $this->get_id());
 
-		if ( ! empty( $response->error ) ) {
-			if ( $this->is_no_such_customer_error( $response->error ) ) {
+		if ( ! empty($response->error)) {
+			if ($this->is_no_such_customer_error($response->error)) {
 				// This can happen when switching the main Stripe account or importing users from another site.
-				if ( 0 === $retries ) {
+				if (0 === $retries) {
 					// If not already tried, recreate the customer and then update it.
 					$this->delete_id_from_meta();
 					$this->create_customer();
-					return $this->update_customer( $args, $retries++ );
+					return $this->update_customer($args, $retries++);
 				}
 
 				$message = $response->error->message;
 
-				if ( ! preg_match( '/similar object exists/i', $message ) ) {
-					$options  = get_option( 'woocommerce_stripe_settings' );
-					$testmode = isset( $options['testmode'] ) && 'yes' === $options['testmode'];
+				if ( ! preg_match('/similar object exists/i', $message)) {
+					$options  = get_option('woocommerce_stripe_settings');
+					$testmode = isset($options['testmode']) && 'yes' === $options['testmode'];
 
 					$message = sprintf(
-						( $testmode
+						($testmode
 							// Translators: %s is a message, which states that no such customer exists, without a full stop at the end.
-							? __( '%s. Was the customer created in live mode? ', 'woocommerce-gateway-stripe' )
+							? __('%s. Was the customer created in live mode? ', 'woocommerce-gateway-stripe')
 							// Translators: %s is a message, which states that no such customer exists, without a full stop at the end.
-							: __( '%s. Was the customer created in test mode? ', 'woocommerce-gateway-stripe' ) ),
+							: __('%s. Was the customer created in test mode? ', 'woocommerce-gateway-stripe')),
 						$message
 					);
 				}
 
-				throw new WC_Stripe_Exception( print_r( $response, true ), $message );
+				throw new WC_Stripe_Exception(print_r($response, true), $message);
 			}
 
-			throw new WC_Stripe_Exception( print_r( $response, true ), $response->error->message );
+			throw new WC_Stripe_Exception(print_r($response, true), $response->error->message);
 		}
 
 		$this->clear_cache();
-		$this->set_customer_data( $response );
+		$this->set_customer_data($response);
 
-		do_action( 'woocommerce_stripe_update_customer', $args, $response );
+		do_action('woocommerce_stripe_update_customer', $args, $response);
 
 		return $this->get_id();
 	}
@@ -235,11 +235,11 @@ 
 	 * @since 4.1.2
 	 * @param array $error
 	 */
-	public function is_no_such_customer_error( $error ) {
+	public function is_no_such_customer_error($error) {
 		return (
 			$error &&
 			'invalid_request_error' === $error->type &&
-			preg_match( '/No such customer/i', $error->message )
+			preg_match('/No such customer/i', $error->message)
 		);
 	}
 
@@ -248,9 +248,9 @@ 
 	 * @param string $source_id
 	 * @return WP_Error|int
 	 */
-	public function add_source( $source_id ) {
-		if ( ! $this->get_id() ) {
-			$this->set_id( $this->create_customer() );
+	public function add_source($source_id) {
+		if ( ! $this->get_id()) {
+			$this->set_id($this->create_customer());
 		}
 
 		$response = WC_Stripe_API::request(
@@ -262,63 +262,63 @@ 
 
 		$wc_token = false;
 
-		if ( ! empty( $response->error ) ) {
+		if ( ! empty($response->error)) {
 			// It is possible the WC user once was linked to a customer on Stripe
 			// but no longer exists. Instead of failing, lets try to create a
 			// new customer.
-			if ( $this->is_no_such_customer_error( $response->error ) ) {
+			if ($this->is_no_such_customer_error($response->error)) {
 				$this->delete_id_from_meta();
 				$this->create_customer();
-				return $this->add_source( $source_id );
+				return $this->add_source($source_id);
 			} else {
 				return $response;
 			}
-		} elseif ( empty( $response->id ) ) {
-			return new WP_Error( 'error', __( 'Unable to add payment source.', 'woocommerce-gateway-stripe' ) );
+		} elseif (empty($response->id)) {
+			return new WP_Error('error', __('Unable to add payment source.', 'woocommerce-gateway-stripe'));
 		}
 
 		// Add token to WooCommerce.
-		if ( $this->get_user_id() && class_exists( 'WC_Payment_Token_CC' ) ) {
-			if ( ! empty( $response->type ) ) {
-				switch ( $response->type ) {
+		if ($this->get_user_id() && class_exists('WC_Payment_Token_CC')) {
+			if ( ! empty($response->type)) {
+				switch ($response->type) {
 					case 'alipay':
 						break;
 					case 'sepa_debit':
 						$wc_token = new WC_Payment_Token_SEPA();
-						$wc_token->set_token( $response->id );
-						$wc_token->set_gateway_id( 'stripe_sepa' );
-						$wc_token->set_last4( $response->sepa_debit->last4 );
+						$wc_token->set_token($response->id);
+						$wc_token->set_gateway_id('stripe_sepa');
+						$wc_token->set_last4($response->sepa_debit->last4);
 						break;
 					default:
-						if ( 'source' === $response->object && 'card' === $response->type ) {
+						if ('source' === $response->object && 'card' === $response->type) {
 							$wc_token = new WC_Payment_Token_CC();
-							$wc_token->set_token( $response->id );
-							$wc_token->set_gateway_id( 'stripe' );
-							$wc_token->set_card_type( strtolower( $response->card->brand ) );
-							$wc_token->set_last4( $response->card->last4 );
-							$wc_token->set_expiry_month( $response->card->exp_month );
-							$wc_token->set_expiry_year( $response->card->exp_year );
+							$wc_token->set_token($response->id);
+							$wc_token->set_gateway_id('stripe');
+							$wc_token->set_card_type(strtolower($response->card->brand));
+							$wc_token->set_last4($response->card->last4);
+							$wc_token->set_expiry_month($response->card->exp_month);
+							$wc_token->set_expiry_year($response->card->exp_year);
 						}
 						break;
 				}
 			} else {
 				// Legacy.
 				$wc_token = new WC_Payment_Token_CC();
-				$wc_token->set_token( $response->id );
-				$wc_token->set_gateway_id( 'stripe' );
-				$wc_token->set_card_type( strtolower( $response->brand ) );
-				$wc_token->set_last4( $response->last4 );
-				$wc_token->set_expiry_month( $response->exp_month );
-				$wc_token->set_expiry_year( $response->exp_year );
+				$wc_token->set_token($response->id);
+				$wc_token->set_gateway_id('stripe');
+				$wc_token->set_card_type(strtolower($response->brand));
+				$wc_token->set_last4($response->last4);
+				$wc_token->set_expiry_month($response->exp_month);
+				$wc_token->set_expiry_year($response->exp_year);
 			}
 
-			$wc_token->set_user_id( $this->get_user_id() );
+			$wc_token->set_user_id($this->get_user_id());
 			$wc_token->save();
 		}
 
 		$this->clear_cache();
 
-		do_action( 'woocommerce_stripe_add_source', $this->get_id(), $wc_token, $response, $source_id );
+		do_action('woocommerce_stripe_add_source', $this->get_id(), $wc_token, $response, $source_id);
 
 		return $response->id;
 	}
@@ -330,11 +330,11 @@ 
 	 * @return array
 	 */
 	public function get_sources() {
-		if ( ! $this->get_id() ) {
+		if ( ! $this->get_id()) {
 			return array();
 		}
 
-		$sources = get_transient( 'stripe_sources_' . $this->get_id() );
+		$sources = get_transient('stripe_sources_' . $this->get_id());
 
 		$response = WC_Stripe_API::request(
 			array(
@@ -344,32 +344,32 @@ 
 			'GET'
 		);
 
-		if ( ! empty( $response->error ) ) {
+		if ( ! empty($response->error)) {
 			return array();
 		}
 
-		if ( is_array( $response->data ) ) {
+		if (is_array($response->data)) {
 			$sources = $response->data;
 		}
 
-		return empty( $sources ) ? array() : $sources;
+		return empty($sources) ? array() : $sources;
 	}
 
 	/**
 	 * Delete a source from stripe.
 	 * @param string $source_id
 	 */
-	public function delete_source( $source_id ) {
-		if ( ! $this->get_id() ) {
+	public function delete_source($source_id) {
+		if ( ! $this->get_id()) {
 			return false;
 		}
 
-		$response = WC_Stripe_API::request( array(), 'customers/' . $this->get_id() . '/sources/' . sanitize_text_field( $source_id ), 'DELETE' );
+		$response = WC_Stripe_API::request(array(), 'customers/' . $this->get_id() . '/sources/' . sanitize_text_field($source_id), 'DELETE');
 
 		$this->clear_cache();
 
-		if ( empty( $response->error ) ) {
-			do_action( 'wc_stripe_delete_source', $this->get_id(), $response );
+		if (empty($response->error)) {
+			do_action('wc_stripe_delete_source', $this->get_id(), $response);
 
 			return true;
 		}
@@ -381,10 +381,10 @@ 
 	 * Set default source in Stripe
 	 * @param string $source_id
 	 */
-	public function set_default_source( $source_id ) {
+	public function set_default_source($source_id) {
 		$response = WC_Stripe_API::request(
 			array(
-				'default_source' => sanitize_text_field( $source_id ),
+				'default_source' => sanitize_text_field($source_id),
 			),
 			'customers/' . $this->get_id(),
 			'POST'
@@ -392,8 +392,8 @@ 
 
 		$this->clear_cache();
 
-		if ( empty( $response->error ) ) {
-			do_action( 'wc_stripe_set_default_source', $this->get_id(), $response );
+		if (empty($response->error)) {
+			do_action('wc_stripe_set_default_source', $this->get_id(), $response);
 
 			return true;
 		}
@@ -405,8 +405,8 @@ 
 	 * Deletes caches for this users cards.
 	 */
 	public function clear_cache() {
-		delete_transient( 'stripe_sources_' . $this->get_id() );
-		delete_transient( 'stripe_customer_' . $this->get_id() );
+		delete_transient('stripe_sources_' . $this->get_id());
+		delete_transient('stripe_customer_' . $this->get_id());
 		$this->customer_data = array();
 	}
 
@@ -416,8 +416,8 @@ 
 	 * @param  int $user_id The ID of the WordPress user.
 	 * @return string|bool  Either the Stripe ID or false.
 	 */
-	public function get_id_from_meta( $user_id ) {
-		return get_user_option( '_stripe_customer_id', $user_id );
+	public function get_id_from_meta($user_id) {
+		return get_user_option('_stripe_customer_id', $user_id);
 	}
 
 	/**
@@ -425,14 +425,14 @@ 
 	 *
 	 * @param string $id The Stripe customer ID.
 	 */
-	public function update_id_in_meta( $id ) {
-		update_user_option( $this->get_user_id(), '_stripe_customer_id', $id, false );
+	public function update_id_in_meta($id) {
+		update_user_option($this->get_user_id(), '_stripe_customer_id', $id, false);
 	}
 
 	/**
 	 * Deletes the user ID from the meta table with the right key.
 	 */
 	public function delete_id_from_meta() {
-		delete_user_option( $this->get_user_id(), '_stripe_customer_id', false );
+		delete_user_option($this->get_user_id(), '_stripe_customer_id', false);
 	}
 }

includes/abstracts/abstract-wc-stripe-payment-gateway.php

Spacing +354 added lines, -355 removed lines

@@ -1,5 +1,5 @@ 
 <?php
-if ( ! defined( 'ABSPATH' ) ) {
+if ( ! defined('ABSPATH')) {
 	exit;
 }
 
@@ -21,7 +21,7 @@ 
 	 */
 	public function display_admin_settings_webhook_description() {
 		/* translators: 1) webhook url */
-		return sprintf( __( 'You must add the following webhook endpoint <strong style="background-color:#ddd;">&nbsp;%s&nbsp;</strong> to your <a href="https://dashboard.stripe.com/account/webhooks" target="_blank">Stripe account settings</a>. This will enable you to receive notifications on the charge statuses.', 'woocommerce-gateway-stripe' ), WC_Stripe_Helper::get_webhook_url() );
+		return sprintf(__('You must add the following webhook endpoint <strong style="background-color:#ddd;">&nbsp;%s&nbsp;</strong> to your <a href="https://dashboard.stripe.com/account/webhooks" target="_blank">Stripe account settings</a>. This will enable you to receive notifications on the charge statuses.', 'woocommerce-gateway-stripe'), WC_Stripe_Helper::get_webhook_url());
 	}
 
 	/**
@@ -35,8 +35,8 @@ 
 				<input id="wc-%1$s-new-payment-method" name="wc-%1$s-new-payment-method" type="checkbox" value="true" style="width:auto;" />
 				<label for="wc-%1$s-new-payment-method" style="display:inline;">%2$s</label>
 			</p>',
-			esc_attr( $this->id ),
-			esc_html( apply_filters( 'wc_stripe_save_to_account_text', __( 'Save payment information to my account for future purchases.', 'woocommerce-gateway-stripe' ) ) )
+			esc_attr($this->id),
+			esc_html(apply_filters('wc_stripe_save_to_account_text', __('Save payment information to my account for future purchases.', 'woocommerce-gateway-stripe')))
 		);
 	}
 
@@ -47,7 +47,7 @@ 
 	 * @since 4.0.5
 	 * @param array $error
 	 */
-	public function is_retryable_error( $error ) {
+	public function is_retryable_error($error) {
 		return (
 			'invalid_request_error' === $error->type ||
 			'idempotency_error' === $error->type ||
@@ -64,11 +64,11 @@ 
 	 * @since 4.1.0
 	 * @param array $error
 	 */
-	public function is_same_idempotency_error( $error ) {
+	public function is_same_idempotency_error($error) {
 		return (
 			$error &&
 			'idempotency_error' === $error->type &&
-			preg_match( '/Keys for idempotent requests can only be used with the same parameters they were first used with./i', $error->message )
+			preg_match('/Keys for idempotent requests can only be used with the same parameters they were first used with./i', $error->message)
 		);
 	}
 
@@ -79,11 +79,11 @@ 
 	 * @since 4.1.0
 	 * @param array $error
 	 */
-	public function is_no_such_customer_error( $error ) {
+	public function is_no_such_customer_error($error) {
 		return (
 			$error &&
 			'invalid_request_error' === $error->type &&
-			preg_match( '/No such customer/i', $error->message )
+			preg_match('/No such customer/i', $error->message)
 		);
 	}
 
@@ -94,11 +94,11 @@ 
 	 * @since 4.1.0
 	 * @param array $error
 	 */
-	public function is_no_such_token_error( $error ) {
+	public function is_no_such_token_error($error) {
 		return (
 			$error &&
 			'invalid_request_error' === $error->type &&
-			preg_match( '/No such token/i', $error->message )
+			preg_match('/No such token/i', $error->message)
 		);
 	}
 
@@ -109,11 +109,11 @@ 
 	 * @since 4.1.0
 	 * @param array $error
 	 */
-	public function is_no_such_source_error( $error ) {
+	public function is_no_such_source_error($error) {
 		return (
 			$error &&
 			'invalid_request_error' === $error->type &&
-			preg_match( '/No such source/i', $error->message )
+			preg_match('/No such source/i', $error->message)
 		);
 	}
 
@@ -124,11 +124,11 @@ 
 	 * @since 4.1.0
 	 * @param array $error
 	 */
-	public function is_no_linked_source_error( $error ) {
+	public function is_no_linked_source_error($error) {
 		return (
 			$error &&
 			'invalid_request_error' === $error->type &&
-			preg_match( '/does not have a linked source with ID/i', $error->message )
+			preg_match('/does not have a linked source with ID/i', $error->message)
 		);
 	}
 
@@ -141,13 +141,13 @@ 
 	 * @param object $error
 	 * @return bool
 	 */
-	public function need_update_idempotency_key( $source_object, $error ) {
+	public function need_update_idempotency_key($source_object, $error) {
 		return (
 			$error &&
 			1 < $this->retry_interval &&
-			! empty( $source_object ) &&
+			! empty($source_object) &&
 			'chargeable' === $source_object->status &&
-			self::is_same_idempotency_error( $error )
+			self::is_same_idempotency_error($error)
 		);
 	}
 
@@ -157,8 +157,8 @@ 
 	 * @since 4.1.3
 	 */
 	public function is_available() {
-		if ( 'yes' === $this->enabled ) {
-			if ( ! $this->secret_key || ! $this->publishable_key ) {
+		if ('yes' === $this->enabled) {
+			if ( ! $this->secret_key || ! $this->publishable_key) {
 				return false;
 			}
 			return true;
@@ -175,12 +175,12 @@ 
 	 * @param int $order_id
 	 * @return bool
 	 */
-	public function maybe_process_pre_orders( $order_id ) {
+	public function maybe_process_pre_orders($order_id) {
 		return (
 			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 ) &&
-			! is_wc_endpoint_url( 'order-pay' )
+			$this->pre_orders->is_pre_order($order_id) &&
+			WC_Pre_Orders_Order::order_requires_payment_tokenization($order_id) &&
+			! is_wc_endpoint_url('order-pay')
 		);
 	}
 
@@ -224,10 +224,10 @@ 
 	 * @version 4.0.0
 	 * @param object $order
 	 */
-	public function validate_minimum_order_amount( $order ) {
-		if ( $order->get_total() * 100 < WC_Stripe_Helper::get_minimum_amount() ) {
+	public function validate_minimum_order_amount($order) {
+		if ($order->get_total() * 100 < WC_Stripe_Helper::get_minimum_amount()) {
 			/* translators: 1) dollar amount */
-			throw new WC_Stripe_Exception( 'Did not meet minimum amount', sprintf( __( 'Sorry, the minimum allowed order total is %1$s to use this payment method.', 'woocommerce-gateway-stripe' ), wc_price( WC_Stripe_Helper::get_minimum_amount() / 100 ) ) );
+			throw new WC_Stripe_Exception('Did not meet minimum amount', sprintf(__('Sorry, the minimum allowed order total is %1$s to use this payment method.', 'woocommerce-gateway-stripe'), wc_price(WC_Stripe_Helper::get_minimum_amount() / 100)));
 		}
 	}
 
@@ -237,14 +237,14 @@ 
 	 * @since 4.0.0
 	 * @version 4.0.0
 	 */
-	public function get_transaction_url( $order ) {
-		if ( $this->testmode ) {
+	public function get_transaction_url($order) {
+		if ($this->testmode) {
 			$this->view_transaction_url = 'https://dashboard.stripe.com/test/payments/%s';
 		} else {
 			$this->view_transaction_url = 'https://dashboard.stripe.com/payments/%s';
 		}
 
-		return parent::get_transaction_url( $order );
+		return parent::get_transaction_url($order);
 	}
 
 	/**
@@ -253,15 +253,15 @@ 
 	 * @since 4.0.0
 	 * @version 4.0.0
 	 */
-	public function get_stripe_customer_id( $order ) {
-		$customer = get_user_option( '_stripe_customer_id', WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->customer_user : $order->get_customer_id() );
+	public function get_stripe_customer_id($order) {
+		$customer = get_user_option('_stripe_customer_id', WC_Stripe_Helper::is_wc_lt('3.0') ? $order->customer_user : $order->get_customer_id());
 
-		if ( empty( $customer ) ) {
+		if (empty($customer)) {
 			// Try to get it via the order.
-			if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-				return get_post_meta( $order->id, '_stripe_customer_id', true );
+			if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+				return get_post_meta($order->id, '_stripe_customer_id', true);
 			} else {
-				return $order->get_meta( '_stripe_customer_id', true );
+				return $order->get_meta('_stripe_customer_id', true);
 			}
 		} else {
 			return $customer;
@@ -278,23 +278,23 @@ 
 	 * @param object $order
 	 * @param int $id Stripe session id.
 	 */
-	public function get_stripe_return_url( $order = null, $id = null ) {
-		if ( is_object( $order ) ) {
-			if ( empty( $id ) ) {
+	public function get_stripe_return_url($order = null, $id = null) {
+		if (is_object($order)) {
+			if (empty($id)) {
 				$id = uniqid();
 			}
 
-			$order_id = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
+			$order_id = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
 
 			$args = array(
 				'utm_nooverride' => '1',
 				'order_id'       => $order_id,
 			);
 
-			return wp_sanitize_redirect( esc_url_raw( add_query_arg( $args, $this->get_return_url( $order ) ) ) );
+			return wp_sanitize_redirect(esc_url_raw(add_query_arg($args, $this->get_return_url($order))));
 		}
 
-		return wp_sanitize_redirect( esc_url_raw( add_query_arg( array( 'utm_nooverride' => '1' ), $this->get_return_url() ) ) );
+		return wp_sanitize_redirect(esc_url_raw(add_query_arg(array('utm_nooverride' => '1'), $this->get_return_url())));
 	}
 
 	/**
@@ -302,8 +302,8 @@ 
 	 * @param  int  $order_id
 	 * @return boolean
 	 */
-	public function has_subscription( $order_id ) {
-		return ( function_exists( 'wcs_order_contains_subscription' ) && ( wcs_order_contains_subscription( $order_id ) || wcs_is_subscription( $order_id ) || wcs_order_contains_renewal( $order_id ) ) );
+	public function has_subscription($order_id) {
+		return (function_exists('wcs_order_contains_subscription') && (wcs_order_contains_subscription($order_id) || wcs_is_subscription($order_id) || wcs_order_contains_renewal($order_id)));
 	}
 
 	/**
@@ -315,34 +315,33 @@ 
 	 * @param  object $prepared_source
 	 * @return array()
 	 */
-	public function generate_payment_request( $order, $prepared_source ) {
-		$settings              = get_option( 'woocommerce_stripe_settings', array() );
-		$statement_descriptor  = ! empty( $settings['statement_descriptor'] ) ? str_replace( "'", '', $settings['statement_descriptor'] ) : '';
-		$capture               = ! empty( $settings['capture'] ) && 'yes' === $settings['capture'] ? true : false;
+	public function generate_payment_request($order, $prepared_source) {
+		$settings              = get_option('woocommerce_stripe_settings', array());
+		$statement_descriptor  = ! empty($settings['statement_descriptor']) ? str_replace("'", '', $settings['statement_descriptor']) : '';
+		$capture               = ! empty($settings['capture']) && 'yes' === $settings['capture'] ? true : false;
 		$post_data             = array();
-		$post_data['currency'] = strtolower( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->get_order_currency() : $order->get_currency() );
-		$post_data['amount']   = WC_Stripe_Helper::get_stripe_amount( $order->get_total(), $post_data['currency'] );
+		$post_data['currency'] = strtolower(WC_Stripe_Helper::is_wc_lt('3.0') ? $order->get_order_currency() : $order->get_currency());
+		$post_data['amount']   = WC_Stripe_Helper::get_stripe_amount($order->get_total(), $post_data['currency']);
 		/* translators: 1) blog name 2) order number */
-		$post_data['description'] = sprintf( __( '%1$s - Order %2$s', 'woocommerce-gateway-stripe' ), wp_specialchars_decode( get_bloginfo( 'name' ), ENT_QUOTES ), $order->get_order_number() );
-		$billing_email            = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_email : $order->get_billing_email();
-		$billing_first_name       = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_first_name : $order->get_billing_first_name();
-		$billing_last_name        = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_last_name : $order->get_billing_last_name();
+		$post_data['description'] = sprintf(__('%1$s - Order %2$s', 'woocommerce-gateway-stripe'), wp_specialchars_decode(get_bloginfo('name'), ENT_QUOTES), $order->get_order_number());
+		$billing_email            = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_email : $order->get_billing_email();
+		$billing_first_name       = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_first_name : $order->get_billing_first_name();
+		$billing_last_name        = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_last_name : $order->get_billing_last_name();
 
-		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;
 		}
 
-		switch ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->payment_method : $order->get_payment_method() ) {
-			case 'stripe':
-				if ( ! empty( $statement_descriptor ) ) {
-					$post_data['statement_descriptor'] = WC_Stripe_Helper::clean_statement_descriptor( $statement_descriptor );
+		switch (WC_Stripe_Helper::is_wc_lt('3.0') ? $order->payment_method : $order->get_payment_method()) {
+			case 'stripe' : if ( ! empty($statement_descriptor)) {
+					$post_data['statement_descriptor'] = WC_Stripe_Helper::clean_statement_descriptor($statement_descriptor);
 				}
 
 				$post_data['capture'] = $capture ? 'true' : 'false';
 				break;
 			case 'stripe_sepa':
-				if ( ! empty( $statement_descriptor ) ) {
-					$post_data['statement_descriptor'] = WC_Stripe_Helper::clean_statement_descriptor( $statement_descriptor );
+				if ( ! empty($statement_descriptor)) {
+					$post_data['statement_descriptor'] = WC_Stripe_Helper::clean_statement_descriptor($statement_descriptor);
 				}
 				break;
 		}
@@ -350,25 +349,25 @@ 
 		$post_data['expand[]'] = 'balance_transaction';
 
 		$metadata = array(
-			__( 'customer_name', 'woocommerce-gateway-stripe' ) => sanitize_text_field( $billing_first_name ) . ' ' . sanitize_text_field( $billing_last_name ),
-			__( 'customer_email', 'woocommerce-gateway-stripe' ) => sanitize_email( $billing_email ),
+			__('customer_name', 'woocommerce-gateway-stripe') => sanitize_text_field($billing_first_name) . ' ' . sanitize_text_field($billing_last_name),
+			__('customer_email', 'woocommerce-gateway-stripe') => sanitize_email($billing_email),
 			'order_id' => $order->get_order_number(),
 		);
 
-		if ( $this->has_subscription( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id() ) ) {
+		if ($this->has_subscription(WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id())) {
 			$metadata += array(
 				'payment_type' => 'recurring',
-				'site_url'     => esc_url( get_site_url() ),
+				'site_url'     => esc_url(get_site_url()),
 			);
 		}
 
-		$post_data['metadata'] = apply_filters( 'wc_stripe_payment_metadata', $metadata, $order, $prepared_source );
+		$post_data['metadata'] = apply_filters('wc_stripe_payment_metadata', $metadata, $order, $prepared_source);
 
-		if ( $prepared_source->customer ) {
+		if ($prepared_source->customer) {
 			$post_data['customer'] = $prepared_source->customer;
 		}
 
-		if ( $prepared_source->source ) {
+		if ($prepared_source->source) {
 			$post_data['source'] = $prepared_source->source;
 		}
 
@@ -380,72 +379,72 @@ 
 		 * @param WC_Order $order
 		 * @param object $source
 		 */
-		return apply_filters( 'wc_stripe_generate_payment_request', $post_data, $order, $prepared_source );
+		return apply_filters('wc_stripe_generate_payment_request', $post_data, $order, $prepared_source);
 	}
 
 	/**
 	 * Store extra meta data for an order from a Stripe Response.
 	 */
-	public function process_response( $response, $order ) {
-		WC_Stripe_Logger::log( 'Processing response: ' . print_r( $response, true ) );
+	public function process_response($response, $order) {
+		WC_Stripe_Logger::log('Processing response: ' . print_r($response, true));
 
-		$order_id = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
-		$captured = ( isset( $response->captured ) && $response->captured ) ? 'yes' : 'no';
+		$order_id = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
+		$captured = (isset($response->captured) && $response->captured) ? 'yes' : 'no';
 
 		// Store charge data.
-		WC_Stripe_Helper::is_wc_lt( '3.0' ) ? update_post_meta( $order_id, '_stripe_charge_captured', $captured ) : $order->update_meta_data( '_stripe_charge_captured', $captured );
+		WC_Stripe_Helper::is_wc_lt('3.0') ? update_post_meta($order_id, '_stripe_charge_captured', $captured) : $order->update_meta_data('_stripe_charge_captured', $captured);
 
-		if ( isset( $response->balance_transaction ) ) {
-			$this->update_fees( $order, is_string( $response->balance_transaction ) ? $response->balance_transaction : $response->balance_transaction->id );
+		if (isset($response->balance_transaction)) {
+			$this->update_fees($order, is_string($response->balance_transaction) ? $response->balance_transaction : $response->balance_transaction->id);
 		}
 
-		if ( 'yes' === $captured ) {
+		if ('yes' === $captured) {
 			/**
 			 * Charge can be captured but in a pending state. Payment methods
 			 * that are asynchronous may take couple days to clear. Webhook will
 			 * take care of the status changes.
 			 */
-			if ( 'pending' === $response->status ) {
-				$order_stock_reduced = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? get_post_meta( $order_id, '_order_stock_reduced', true ) : $order->get_meta( '_order_stock_reduced', true );
+			if ('pending' === $response->status) {
+				$order_stock_reduced = WC_Stripe_Helper::is_wc_lt('3.0') ? get_post_meta($order_id, '_order_stock_reduced', true) : $order->get_meta('_order_stock_reduced', true);
 
-				if ( ! $order_stock_reduced ) {
-					WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->reduce_order_stock() : wc_reduce_stock_levels( $order_id );
+				if ( ! $order_stock_reduced) {
+					WC_Stripe_Helper::is_wc_lt('3.0') ? $order->reduce_order_stock() : wc_reduce_stock_levels($order_id);
 				}
 
-				WC_Stripe_Helper::is_wc_lt( '3.0' ) ? update_post_meta( $order_id, '_transaction_id', $response->id ) : $order->set_transaction_id( $response->id );
+				WC_Stripe_Helper::is_wc_lt('3.0') ? update_post_meta($order_id, '_transaction_id', $response->id) : $order->set_transaction_id($response->id);
 				/* translators: transaction id */
-				$order->update_status( 'on-hold', sprintf( __( 'Stripe charge awaiting payment: %s.', 'woocommerce-gateway-stripe' ), $response->id ) );
+				$order->update_status('on-hold', sprintf(__('Stripe charge awaiting payment: %s.', 'woocommerce-gateway-stripe'), $response->id));
 			}
 
-			if ( 'succeeded' === $response->status ) {
-				$order->payment_complete( $response->id );
+			if ('succeeded' === $response->status) {
+				$order->payment_complete($response->id);
 
 				/* translators: transaction id */
-				$message = sprintf( __( 'Stripe charge complete (Charge ID: %s)', 'woocommerce-gateway-stripe' ), $response->id );
-				$order->add_order_note( $message );
+				$message = sprintf(__('Stripe charge complete (Charge ID: %s)', 'woocommerce-gateway-stripe'), $response->id);
+				$order->add_order_note($message);
 			}
 
-			if ( 'failed' === $response->status ) {
-				$localized_message = __( 'Payment processing failed. Please retry.', 'woocommerce-gateway-stripe' );
-				$order->add_order_note( $localized_message );
-				throw new WC_Stripe_Exception( print_r( $response, true ), $localized_message );
+			if ('failed' === $response->status) {
+				$localized_message = __('Payment processing failed. Please retry.', 'woocommerce-gateway-stripe');
+				$order->add_order_note($localized_message);
+				throw new WC_Stripe_Exception(print_r($response, true), $localized_message);
 			}
 		} else {
-			WC_Stripe_Helper::is_wc_lt( '3.0' ) ? update_post_meta( $order_id, '_transaction_id', $response->id ) : $order->set_transaction_id( $response->id );
+			WC_Stripe_Helper::is_wc_lt('3.0') ? update_post_meta($order_id, '_transaction_id', $response->id) : $order->set_transaction_id($response->id);
 
-			if ( $order->has_status( array( 'pending', 'failed' ) ) ) {
-				WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->reduce_order_stock() : wc_reduce_stock_levels( $order_id );
+			if ($order->has_status(array('pending', 'failed'))) {
+				WC_Stripe_Helper::is_wc_lt('3.0') ? $order->reduce_order_stock() : wc_reduce_stock_levels($order_id);
 			}
 
 			/* translators: transaction id */
-			$order->update_status( 'on-hold', sprintf( __( 'Stripe charge authorized (Charge ID: %s). Process order to take payment, or cancel to remove the pre-authorization.', 'woocommerce-gateway-stripe' ), $response->id ) );
+			$order->update_status('on-hold', sprintf(__('Stripe charge authorized (Charge ID: %s). Process order to take payment, or cancel to remove the pre-authorization.', 'woocommerce-gateway-stripe'), $response->id));
 		}
 
-		if ( is_callable( array( $order, 'save' ) ) ) {
+		if (is_callable(array($order, 'save'))) {
 			$order->save();
 		}
 
-		do_action( 'wc_gateway_stripe_process_response', $response, $order );
+		do_action('wc_gateway_stripe_process_response', $response, $order);
 
 		return $response;
 	}
@@ -458,10 +457,10 @@ 
 	 * @param int $order_id
 	 * @return null
 	 */
-	public function send_failed_order_email( $order_id ) {
+	public function send_failed_order_email($order_id) {
 		$emails = WC()->mailer()->get_emails();
-		if ( ! empty( $emails ) && ! empty( $order_id ) ) {
-			$emails['WC_Email_Failed_Order']->trigger( $order_id );
+		if ( ! empty($emails) && ! empty($order_id)) {
+			$emails['WC_Email_Failed_Order']->trigger($order_id);
 		}
 	}
 
@@ -473,36 +472,36 @@ 
 	 * @param object $order
 	 * @return object $details
 	 */
-	public function get_owner_details( $order ) {
-		$billing_first_name = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_first_name : $order->get_billing_first_name();
-		$billing_last_name  = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_last_name : $order->get_billing_last_name();
+	public function get_owner_details($order) {
+		$billing_first_name = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_first_name : $order->get_billing_first_name();
+		$billing_last_name  = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_last_name : $order->get_billing_last_name();
 
 		$details = array();
 
 		$name  = $billing_first_name . ' ' . $billing_last_name;
-		$email = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_email : $order->get_billing_email();
-		$phone = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_phone : $order->get_billing_phone();
+		$email = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_email : $order->get_billing_email();
+		$phone = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_phone : $order->get_billing_phone();
 
-		if ( ! empty( $phone ) ) {
+		if ( ! empty($phone)) {
 			$details['phone'] = $phone;
 		}
 
-		if ( ! empty( $name ) ) {
+		if ( ! empty($name)) {
 			$details['name'] = $name;
 		}
 
-		if ( ! empty( $email ) ) {
+		if ( ! empty($email)) {
 			$details['email'] = $email;
 		}
 
-		$details['address']['line1']       = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_address_1 : $order->get_billing_address_1();
-		$details['address']['line2']       = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_address_2 : $order->get_billing_address_2();
-		$details['address']['state']       = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_state : $order->get_billing_state();
-		$details['address']['city']        = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_city : $order->get_billing_city();
-		$details['address']['postal_code'] = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_postcode : $order->get_billing_postcode();
-		$details['address']['country']     = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->billing_country : $order->get_billing_country();
+		$details['address']['line1']       = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_address_1 : $order->get_billing_address_1();
+		$details['address']['line2']       = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_address_2 : $order->get_billing_address_2();
+		$details['address']['state']       = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_state : $order->get_billing_state();
+		$details['address']['city']        = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_city : $order->get_billing_city();
+		$details['address']['postal_code'] = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_postcode : $order->get_billing_postcode();
+		$details['address']['country']     = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->billing_country : $order->get_billing_country();
 
-		return (object) apply_filters( 'wc_stripe_owner_details', $details, $order );
+		return (object) apply_filters('wc_stripe_owner_details', $details, $order);
 	}
 
 	/**
@@ -511,15 +510,15 @@ 
 	 * @since 4.0.3
 	 * @param string $source_id The source ID to get source object for.
 	 */
-	public function get_source_object( $source_id = '' ) {
-		if ( empty( $source_id ) ) {
+	public function get_source_object($source_id = '') {
+		if (empty($source_id)) {
 			return '';
 		}
 
-		$source_object = WC_Stripe_API::retrieve( 'sources/' . $source_id );
+		$source_object = WC_Stripe_API::retrieve('sources/' . $source_id);
 
-		if ( ! empty( $source_object->error ) ) {
-			throw new WC_Stripe_Exception( print_r( $source_object, true ), $source_object->error->message );
+		if ( ! empty($source_object->error)) {
+			throw new WC_Stripe_Exception(print_r($source_object, true), $source_object->error->message);
 		}
 
 		return $source_object;
@@ -532,10 +531,10 @@ 
 	 * @param object $source_object
 	 * @return bool
 	 */
-	public function is_prepaid_card( $source_object ) {
+	public function is_prepaid_card($source_object) {
 		return (
 			$source_object
-			&& ( 'token' === $source_object->object || 'source' === $source_object->object )
+			&& ('token' === $source_object->object || 'source' === $source_object->object)
 			&& 'prepaid' === $source_object->card->funding
 		);
 	}
@@ -547,8 +546,8 @@ 
 	 * @param string $source_id
 	 * @return bool
 	 */
-	public function is_type_legacy_card( $source_id ) {
-		return ( preg_match( '/^card_/', $source_id ) );
+	public function is_type_legacy_card($source_id) {
+		return (preg_match('/^card_/', $source_id));
 	}
 
 	/**
@@ -558,9 +557,9 @@ 
 	 * @return bool
 	 */
 	public function is_using_saved_payment_method() {
-		$payment_method = isset( $_POST['payment_method'] ) ? wc_clean( $_POST['payment_method'] ) : 'stripe';
+		$payment_method = isset($_POST['payment_method']) ? wc_clean($_POST['payment_method']) : 'stripe';
 
-		return ( isset( $_POST[ 'wc-' . $payment_method . '-payment-token' ] ) && 'new' !== $_POST[ 'wc-' . $payment_method . '-payment-token' ] );
+		return (isset($_POST['wc-' . $payment_method . '-payment-token']) && 'new' !== $_POST['wc-' . $payment_method . '-payment-token']);
 	}
 
 	/**
@@ -576,64 +575,64 @@ 
 	 * @throws Exception When card was not added or for and invalid card.
 	 * @return object
 	 */
-	public function prepare_source( $user_id, $force_save_source = false, $existing_customer_id = null ) {
-		$customer = new WC_Stripe_Customer( $user_id );
-		if ( ! empty( $existing_customer_id ) ) {
-			$customer->set_id( $existing_customer_id );
+	public function prepare_source($user_id, $force_save_source = false, $existing_customer_id = null) {
+		$customer = new WC_Stripe_Customer($user_id);
+		if ( ! empty($existing_customer_id)) {
+			$customer->set_id($existing_customer_id);
 		}
 
-		$force_save_source = apply_filters( 'wc_stripe_force_save_source', $force_save_source, $customer );
+		$force_save_source = apply_filters('wc_stripe_force_save_source', $force_save_source, $customer);
 		$source_object     = '';
 		$source_id         = '';
 		$wc_token_id       = false;
-		$payment_method    = isset( $_POST['payment_method'] ) ? wc_clean( $_POST['payment_method'] ) : 'stripe';
+		$payment_method    = isset($_POST['payment_method']) ? wc_clean($_POST['payment_method']) : 'stripe';
 		$is_token          = false;
 
 		// New CC info was entered and we have a new source to process.
-		if ( ! empty( $_POST['stripe_source'] ) ) {
-			$source_object = self::get_source_object( wc_clean( $_POST['stripe_source'] ) );
+		if ( ! empty($_POST['stripe_source'])) {
+			$source_object = self::get_source_object(wc_clean($_POST['stripe_source']));
 			$source_id     = $source_object->id;
 
 			// This checks to see if customer opted to save the payment method to file.
-			$maybe_saved_card = isset( $_POST[ 'wc-' . $payment_method . '-new-payment-method' ] ) && ! empty( $_POST[ 'wc-' . $payment_method . '-new-payment-method' ] );
+			$maybe_saved_card = isset($_POST['wc-' . $payment_method . '-new-payment-method']) && ! empty($_POST['wc-' . $payment_method . '-new-payment-method']);
 
 			/**
 			 * This is true if the user wants to store the card to their account.
 			 * Criteria to save to file is they are logged in, they opted to save or product requirements and the source is
 			 * actually reusable. Either that or force_save_source is true.
 			 */
-			if ( ( $user_id && $this->saved_cards && $maybe_saved_card && 'reusable' === $source_object->usage ) || $force_save_source ) {
-				$response = $customer->add_source( $source_object->id );
+			if (($user_id && $this->saved_cards && $maybe_saved_card && 'reusable' === $source_object->usage) || $force_save_source) {
+				$response = $customer->add_source($source_object->id);
 
-				if ( ! empty( $response->error ) ) {
-					throw new WC_Stripe_Exception( print_r( $response, true ), $this->get_localized_error_message_from_response( $response ) );
+				if ( ! empty($response->error)) {
+					throw new WC_Stripe_Exception(print_r($response, true), $this->get_localized_error_message_from_response($response));
 				}
 			}
-		} elseif ( $this->is_using_saved_payment_method() ) {
+		} elseif ($this->is_using_saved_payment_method()) {
 			// Use an existing token, and then process the payment.
-			$wc_token_id = wc_clean( $_POST[ 'wc-' . $payment_method . '-payment-token' ] );
-			$wc_token    = WC_Payment_Tokens::get( $wc_token_id );
+			$wc_token_id = wc_clean($_POST['wc-' . $payment_method . '-payment-token']);
+			$wc_token    = WC_Payment_Tokens::get($wc_token_id);
 
-			if ( ! $wc_token || $wc_token->get_user_id() !== get_current_user_id() ) {
-				WC()->session->set( 'refresh_totals', true );
-				throw new WC_Stripe_Exception( 'Invalid payment method', __( 'Invalid payment method. Please input a new card number.', 'woocommerce-gateway-stripe' ) );
+			if ( ! $wc_token || $wc_token->get_user_id() !== get_current_user_id()) {
+				WC()->session->set('refresh_totals', true);
+				throw new WC_Stripe_Exception('Invalid payment method', __('Invalid payment method. Please input a new card number.', 'woocommerce-gateway-stripe'));
 			}
 
 			$source_id = $wc_token->get_token();
 
-			if ( $this->is_type_legacy_card( $source_id ) ) {
+			if ($this->is_type_legacy_card($source_id)) {
 				$is_token = true;
 			}
-		} elseif ( isset( $_POST['stripe_token'] ) && 'new' !== $_POST['stripe_token'] ) {
-			$stripe_token     = wc_clean( $_POST['stripe_token'] );
-			$maybe_saved_card = isset( $_POST[ 'wc-' . $payment_method . '-new-payment-method' ] ) && ! empty( $_POST[ 'wc-' . $payment_method . '-new-payment-method' ] );
+		} elseif (isset($_POST['stripe_token']) && 'new' !== $_POST['stripe_token']) {
+			$stripe_token     = wc_clean($_POST['stripe_token']);
+			$maybe_saved_card = isset($_POST['wc-' . $payment_method . '-new-payment-method']) && ! empty($_POST['wc-' . $payment_method . '-new-payment-method']);
 
 			// This is true if the user wants to store the card to their account.
-			if ( ( $user_id && $this->saved_cards && $maybe_saved_card ) || $force_save_source ) {
-				$response = $customer->add_source( $stripe_token );
+			if (($user_id && $this->saved_cards && $maybe_saved_card) || $force_save_source) {
+				$response = $customer->add_source($stripe_token);
 
-				if ( ! empty( $response->error ) ) {
-					throw new WC_Stripe_Exception( print_r( $response, true ), $response->error->message );
+				if ( ! empty($response->error)) {
+					throw new WC_Stripe_Exception(print_r($response, true), $response->error->message);
 				}
 			} else {
 				$source_id    = $stripe_token;
@@ -642,15 +641,15 @@ 
 		}
 
 		$customer_id = $customer->get_id();
-		if ( ! $customer_id ) {
-			$customer->set_id( $customer->create_customer() );
+		if ( ! $customer_id) {
+			$customer->set_id($customer->create_customer());
 			$customer_id = $customer->get_id();
 		} else {
 			$customer_id = $customer->update_customer();
 		}
 
-		if ( empty( $source_object ) && ! $is_token ) {
-			$source_object = self::get_source_object( $source_id );
+		if (empty($source_object) && ! $is_token) {
+			$source_object = self::get_source_object($source_id);
 		}
 
 		return (object) array(
@@ -674,39 +673,39 @@ 
 	 * @param object $order
 	 * @return object
 	 */
-	public function prepare_order_source( $order = null ) {
+	public function prepare_order_source($order = null) {
 		$stripe_customer = new WC_Stripe_Customer();
 		$stripe_source   = false;
 		$token_id        = false;
 		$source_object   = false;
 
-		if ( $order ) {
-			$order_id = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
+		if ($order) {
+			$order_id = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
 
-			$stripe_customer_id = get_post_meta( $order_id, '_stripe_customer_id', true );
+			$stripe_customer_id = get_post_meta($order_id, '_stripe_customer_id', true);
 
-			if ( $stripe_customer_id ) {
-				$stripe_customer->set_id( $stripe_customer_id );
+			if ($stripe_customer_id) {
+				$stripe_customer->set_id($stripe_customer_id);
 			}
 
-			$source_id = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? get_post_meta( $order_id, '_stripe_source_id', true ) : $order->get_meta( '_stripe_source_id', true );
+			$source_id = WC_Stripe_Helper::is_wc_lt('3.0') ? get_post_meta($order_id, '_stripe_source_id', true) : $order->get_meta('_stripe_source_id', true);
 
 			// Since 4.0.0, we changed card to source so we need to account for that.
-			if ( empty( $source_id ) ) {
-				$source_id = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? get_post_meta( $order_id, '_stripe_card_id', true ) : $order->get_meta( '_stripe_card_id', true );
+			if (empty($source_id)) {
+				$source_id = WC_Stripe_Helper::is_wc_lt('3.0') ? get_post_meta($order_id, '_stripe_card_id', true) : $order->get_meta('_stripe_card_id', true);
 
 				// Take this opportunity to update the key name.
-				WC_Stripe_Helper::is_wc_lt( '3.0' ) ? update_post_meta( $order_id, '_stripe_source_id', $source_id ) : $order->update_meta_data( '_stripe_source_id', $source_id );
+				WC_Stripe_Helper::is_wc_lt('3.0') ? update_post_meta($order_id, '_stripe_source_id', $source_id) : $order->update_meta_data('_stripe_source_id', $source_id);
 
-				if ( is_callable( array( $order, 'save' ) ) ) {
+				if (is_callable(array($order, 'save'))) {
 					$order->save();
 				}
 			}
 
-			if ( $source_id ) {
+			if ($source_id) {
 				$stripe_source = $source_id;
-				$source_object = WC_Stripe_API::retrieve( 'sources/' . $source_id );
-			} elseif ( apply_filters( 'wc_stripe_use_default_customer_source', true ) ) {
+				$source_object = WC_Stripe_API::retrieve('sources/' . $source_id);
+			} elseif (apply_filters('wc_stripe_use_default_customer_source', true)) {
 				/*
 				 * We can attempt to charge the customer's default source
 				 * by sending empty source id.
@@ -731,27 +730,27 @@ 
 	 * @param WC_Order $order For to which the source applies.
 	 * @param stdClass $source Source information.
 	 */
-	public function save_source_to_order( $order, $source ) {
-		$order_id = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
+	public function save_source_to_order($order, $source) {
+		$order_id = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
 
 		// Store source in the order.
-		if ( $source->customer ) {
-			if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-				update_post_meta( $order_id, '_stripe_customer_id', $source->customer );
+		if ($source->customer) {
+			if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+				update_post_meta($order_id, '_stripe_customer_id', $source->customer);
 			} else {
-				$order->update_meta_data( '_stripe_customer_id', $source->customer );
+				$order->update_meta_data('_stripe_customer_id', $source->customer);
 			}
 		}
 
-		if ( $source->source ) {
-			if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-				update_post_meta( $order_id, '_stripe_source_id', $source->source );
+		if ($source->source) {
+			if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+				update_post_meta($order_id, '_stripe_source_id', $source->source);
 			} else {
-				$order->update_meta_data( '_stripe_source_id', $source->source );
+				$order->update_meta_data('_stripe_source_id', $source->source);
 			}
 		}
 
-		if ( is_callable( array( $order, 'save' ) ) ) {
+		if (is_callable(array($order, 'save'))) {
 			$order->save();
 		}
 	}
@@ -765,38 +764,38 @@ 
 	 * @param object $order The order object
 	 * @param int $balance_transaction_id
 	 */
-	public function update_fees( $order, $balance_transaction_id ) {
-		$order_id = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
+	public function update_fees($order, $balance_transaction_id) {
+		$order_id = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
 
-		$balance_transaction = WC_Stripe_API::retrieve( 'balance/history/' . $balance_transaction_id );
+		$balance_transaction = WC_Stripe_API::retrieve('balance/history/' . $balance_transaction_id);
 
-		if ( empty( $balance_transaction->error ) ) {
-			if ( isset( $balance_transaction ) && isset( $balance_transaction->fee ) ) {
+		if (empty($balance_transaction->error)) {
+			if (isset($balance_transaction) && isset($balance_transaction->fee)) {
 				// Fees and Net needs to both come from Stripe to be accurate as the returned
 				// values are in the local currency of the Stripe account, not from WC.
-				$fee_refund = ! empty( $balance_transaction->fee ) ? WC_Stripe_Helper::format_balance_fee( $balance_transaction, 'fee' ) : 0;
-				$net_refund = ! empty( $balance_transaction->net ) ? WC_Stripe_Helper::format_balance_fee( $balance_transaction, 'net' ) : 0;
+				$fee_refund = ! empty($balance_transaction->fee) ? WC_Stripe_Helper::format_balance_fee($balance_transaction, 'fee') : 0;
+				$net_refund = ! empty($balance_transaction->net) ? WC_Stripe_Helper::format_balance_fee($balance_transaction, 'net') : 0;
 
 				// Current data fee & net.
-				$fee_current = WC_Stripe_Helper::get_stripe_fee( $order );
-				$net_current = WC_Stripe_Helper::get_stripe_net( $order );
+				$fee_current = WC_Stripe_Helper::get_stripe_fee($order);
+				$net_current = WC_Stripe_Helper::get_stripe_net($order);
 
 				// Calculation.
 				$fee = (float) $fee_current + (float) $fee_refund;
 				$net = (float) $net_current + (float) $net_refund;
 
-				WC_Stripe_Helper::update_stripe_fee( $order, $fee );
-				WC_Stripe_Helper::update_stripe_net( $order, $net );
+				WC_Stripe_Helper::update_stripe_fee($order, $fee);
+				WC_Stripe_Helper::update_stripe_net($order, $net);
 
-				$currency = ! empty( $balance_transaction->currency ) ? strtoupper( $balance_transaction->currency ) : null;
-				WC_Stripe_Helper::update_stripe_currency( $order, $currency );
+				$currency = ! empty($balance_transaction->currency) ? strtoupper($balance_transaction->currency) : null;
+				WC_Stripe_Helper::update_stripe_currency($order, $currency);
 
-				if ( is_callable( array( $order, 'save' ) ) ) {
+				if (is_callable(array($order, 'save'))) {
 					$order->save();
 				}
 			}
 		} else {
-			WC_Stripe_Logger::log( "Unable to update fees/net meta for order: {$order_id}" );
+			WC_Stripe_Logger::log("Unable to update fees/net meta for order: {$order_id}");
 		}
 	}
 
@@ -809,99 +808,99 @@ 
 	 * @param  float $amount
 	 * @return bool
 	 */
-	public function process_refund( $order_id, $amount = null, $reason = '' ) {
-		$order = wc_get_order( $order_id );
+	public function process_refund($order_id, $amount = null, $reason = '') {
+		$order = wc_get_order($order_id);
 
-		if ( ! $order ) {
+		if ( ! $order) {
 			return false;
 		}
 
 		$request = array();
 
-		if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-			$order_currency = get_post_meta( $order_id, '_order_currency', true );
-			$captured       = get_post_meta( $order_id, '_stripe_charge_captured', true );
-			$charge_id      = get_post_meta( $order_id, '_transaction_id', true );
+		if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+			$order_currency = get_post_meta($order_id, '_order_currency', true);
+			$captured       = get_post_meta($order_id, '_stripe_charge_captured', true);
+			$charge_id      = get_post_meta($order_id, '_transaction_id', true);
 		} else {
 			$order_currency = $order->get_currency();
-			$captured       = $order->get_meta( '_stripe_charge_captured', true );
+			$captured       = $order->get_meta('_stripe_charge_captured', true);
 			$charge_id      = $order->get_transaction_id();
 		}
 
-		if ( ! $charge_id ) {
+		if ( ! $charge_id) {
 			return false;
 		}
 
-		if ( ! is_null( $amount ) ) {
-			$request['amount'] = WC_Stripe_Helper::get_stripe_amount( $amount, $order_currency );
+		if ( ! is_null($amount)) {
+			$request['amount'] = WC_Stripe_Helper::get_stripe_amount($amount, $order_currency);
 		}
 
 		// If order is only authorized, don't pass amount.
-		if ( 'yes' !== $captured ) {
-			unset( $request['amount'] );
+		if ('yes' !== $captured) {
+			unset($request['amount']);
 		}
 
-		if ( $reason ) {
+		if ($reason) {
 			$request['metadata'] = array(
 				'reason' => $reason,
 			);
 		}
 
 		$request['charge'] = $charge_id;
-		WC_Stripe_Logger::log( "Info: Beginning refund for order {$charge_id} for the amount of {$amount}" );
+		WC_Stripe_Logger::log("Info: Beginning refund for order {$charge_id} for the amount of {$amount}");
 
-		$request = apply_filters( 'wc_stripe_refund_request', $request, $order );
+		$request = apply_filters('wc_stripe_refund_request', $request, $order);
 
-		$intent = $this->get_intent_from_order( $order );
+		$intent = $this->get_intent_from_order($order);
 		$intent_cancelled = false;
-		if ( $intent ) {
+		if ($intent) {
 			// If the order has a Payment Intent pending capture, then the Intent itself must be refunded (cancelled), not the Charge
-			if ( ! empty( $intent->error ) ) {
+			if ( ! empty($intent->error)) {
 				$response = $intent;
 				$intent_cancelled = true;
-			} elseif ( 'requires_capture' === $intent->status ) {
+			} elseif ('requires_capture' === $intent->status) {
 				$result = WC_Stripe_API::request(
 					array(),
 					'payment_intents/' . $intent->id . '/cancel'
 				);
 				$intent_cancelled = true;
 
-				if ( ! empty( $result->error ) ) {
+				if ( ! empty($result->error)) {
 					$response = $result;
 				} else {
-					$charge = end( $result->charges->data );
-					$response = end( $charge->refunds->data );
+					$charge = end($result->charges->data);
+					$response = end($charge->refunds->data);
 				}
 			}
 		}
 
-		if ( ! $intent_cancelled ) {
-			$response = WC_Stripe_API::request( $request, 'refunds' );
+		if ( ! $intent_cancelled) {
+			$response = WC_Stripe_API::request($request, 'refunds');
 		}
 
-		if ( ! empty( $response->error ) ) {
-			WC_Stripe_Logger::log( 'Error: ' . $response->error->message );
+		if ( ! empty($response->error)) {
+			WC_Stripe_Logger::log('Error: ' . $response->error->message);
 
 			return $response;
 
-		} elseif ( ! empty( $response->id ) ) {
-			WC_Stripe_Helper::is_wc_lt( '3.0' ) ? update_post_meta( $order_id, '_stripe_refund_id', $response->id ) : $order->update_meta_data( '_stripe_refund_id', $response->id );
+		} elseif ( ! empty($response->id)) {
+			WC_Stripe_Helper::is_wc_lt('3.0') ? update_post_meta($order_id, '_stripe_refund_id', $response->id) : $order->update_meta_data('_stripe_refund_id', $response->id);
 
-			$amount = wc_price( $response->amount / 100 );
+			$amount = wc_price($response->amount / 100);
 
-			if ( in_array( strtolower( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->get_order_currency() : $order->get_currency() ), WC_Stripe_Helper::no_decimal_currencies() ) ) {
-				$amount = wc_price( $response->amount );
+			if (in_array(strtolower(WC_Stripe_Helper::is_wc_lt('3.0') ? $order->get_order_currency() : $order->get_currency()), WC_Stripe_Helper::no_decimal_currencies())) {
+				$amount = wc_price($response->amount);
 			}
 
-			if ( isset( $response->balance_transaction ) ) {
-				$this->update_fees( $order, $response->balance_transaction );
+			if (isset($response->balance_transaction)) {
+				$this->update_fees($order, $response->balance_transaction);
 			}
 
 			/* translators: 1) dollar amount 2) transaction id 3) refund message */
-			$refund_message = ( isset( $captured ) && 'yes' === $captured ) ? sprintf( __( 'Refunded %1$s - Refund ID: %2$s - Reason: %3$s', 'woocommerce-gateway-stripe' ), $amount, $response->id, $reason ) : __( 'Pre-Authorization Released', 'woocommerce-gateway-stripe' );
+			$refund_message = (isset($captured) && 'yes' === $captured) ? sprintf(__('Refunded %1$s - Refund ID: %2$s - Reason: %3$s', 'woocommerce-gateway-stripe'), $amount, $response->id, $reason) : __('Pre-Authorization Released', 'woocommerce-gateway-stripe');
 
-			$order->add_order_note( $refund_message );
-			WC_Stripe_Logger::log( 'Success: ' . html_entity_decode( wp_strip_all_tags( $refund_message ) ) );
+			$order->add_order_note($refund_message);
+			WC_Stripe_Logger::log('Success: ' . html_entity_decode(wp_strip_all_tags($refund_message)));
 
 			return true;
 		}
@@ -916,46 +915,46 @@ 
 	 */
 	public function add_payment_method() {
 		$error     = false;
-		$error_msg = __( 'There was a problem adding the payment method.', 'woocommerce-gateway-stripe' );
+		$error_msg = __('There was a problem adding the payment method.', 'woocommerce-gateway-stripe');
 		$source_id = '';
 
-		if ( empty( $_POST['stripe_source'] ) && empty( $_POST['stripe_token'] ) || ! is_user_logged_in() ) {
+		if (empty($_POST['stripe_source']) && empty($_POST['stripe_token']) || ! is_user_logged_in()) {
 			$error = true;
 		}
 
-		$stripe_customer = new WC_Stripe_Customer( get_current_user_id() );
+		$stripe_customer = new WC_Stripe_Customer(get_current_user_id());
 
-		$source = ! empty( $_POST['stripe_source'] ) ? wc_clean( $_POST['stripe_source'] ) : '';
+		$source = ! empty($_POST['stripe_source']) ? wc_clean($_POST['stripe_source']) : '';
 
-		$source_object = WC_Stripe_API::retrieve( 'sources/' . $source );
+		$source_object = WC_Stripe_API::retrieve('sources/' . $source);
 
-		if ( isset( $source_object ) ) {
-			if ( ! empty( $source_object->error ) ) {
+		if (isset($source_object)) {
+			if ( ! empty($source_object->error)) {
 				$error = true;
 			}
 
 			$source_id = $source_object->id;
-		} elseif ( isset( $_POST['stripe_token'] ) ) {
-			$source_id = wc_clean( $_POST['stripe_token'] );
+		} elseif (isset($_POST['stripe_token'])) {
+			$source_id = wc_clean($_POST['stripe_token']);
 		}
 
-		$response = $stripe_customer->add_source( $source_id );
+		$response = $stripe_customer->add_source($source_id);
 
-		if ( ! $response || is_wp_error( $response ) || ! empty( $response->error ) ) {
+		if ( ! $response || is_wp_error($response) || ! empty($response->error)) {
 			$error = true;
 		}
 
-		if ( $error ) {
-			wc_add_notice( $error_msg, 'error' );
-			WC_Stripe_Logger::log( 'Add payment method Error: ' . $error_msg );
+		if ($error) {
+			wc_add_notice($error_msg, 'error');
+			WC_Stripe_Logger::log('Add payment method Error: ' . $error_msg);
 			return;
 		}
 
-		do_action( 'wc_stripe_add_payment_method_' . $_POST['payment_method'] . '_success', $source_id, $source_object );
+		do_action('wc_stripe_add_payment_method_' . $_POST['payment_method'] . '_success', $source_id, $source_object);
 
 		return array(
 			'result'   => 'success',
-			'redirect' => wc_get_endpoint_url( 'payment-methods' ),
+			'redirect' => wc_get_endpoint_url('payment-methods'),
 		);
 	}
 
@@ -972,10 +971,10 @@ 
 		 * Stripe expects Norwegian to only be passed NO.
 		 * But WP has different dialects.
 		 */
-		if ( 'NO' === substr( $locale, 3, 2 ) ) {
+		if ('NO' === substr($locale, 3, 2)) {
 			$locale = 'no';
 		} else {
-			$locale = substr( get_locale(), 0, 2 );
+			$locale = substr(get_locale(), 0, 2);
 		}
 
 		return $locale;
@@ -989,9 +988,9 @@ 
 	 * @param string $idempotency_key
 	 * @param array $request
 	 */
-	public function change_idempotency_key( $idempotency_key, $request ) {
-		$customer = ! empty( $request['customer'] ) ? $request['customer'] : '';
-		$source   = ! empty( $request['source'] ) ? $request['source'] : $customer;
+	public function change_idempotency_key($idempotency_key, $request) {
+		$customer = ! empty($request['customer']) ? $request['customer'] : '';
+		$source   = ! empty($request['source']) ? $request['source'] : $customer;
 		$count    = $this->retry_interval;
 
 		return $request['metadata']['order_id'] . '-' . $count . '-' . $source;
@@ -1005,8 +1004,8 @@ 
 	 * @since 4.0.6
 	 * @param array $headers
 	 */
-	public function is_original_request( $headers ) {
-		if ( $headers['original-request'] === $headers['request-id'] ) {
+	public function is_original_request($headers) {
+		if ($headers['original-request'] === $headers['request-id']) {
 			return true;
 		}
 
@@ -1020,27 +1019,27 @@ 
 	 * @param object   $prepared_source The source that is used for the payment.
 	 * @return array                    The arguments for the request.
 	 */
-	public function generate_create_intent_request( $order, $prepared_source ) {
+	public function generate_create_intent_request($order, $prepared_source) {
 		// The request for a charge contains metadata for the intent.
-		$full_request = $this->generate_payment_request( $order, $prepared_source );
+		$full_request = $this->generate_payment_request($order, $prepared_source);
 
 		$request = array(
 			'source'               => $prepared_source->source,
-			'amount'               => WC_Stripe_Helper::get_stripe_amount( $order->get_total() ),
-			'currency'             => strtolower( WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->get_order_currency() : $order->get_currency() ),
+			'amount'               => WC_Stripe_Helper::get_stripe_amount($order->get_total()),
+			'currency'             => strtolower(WC_Stripe_Helper::is_wc_lt('3.0') ? $order->get_order_currency() : $order->get_currency()),
 			'description'          => $full_request['description'],
 			'metadata'             => $full_request['metadata'],
-			'capture_method'       => ( 'true' === $full_request['capture'] ) ? 'automatic' : 'manual',
+			'capture_method'       => ('true' === $full_request['capture']) ? 'automatic' : 'manual',
 			'payment_method_types' => array(
 				'card',
 			),
 		);
 
-		if ( $prepared_source->customer ) {
+		if ($prepared_source->customer) {
 			$request['customer'] = $prepared_source->customer;
 		}
 
-		if ( isset( $full_request['statement_descriptor'] ) ) {
+		if (isset($full_request['statement_descriptor'])) {
 			$request['statement_descriptor'] = $full_request['statement_descriptor'];
 		}
 
@@ -1052,7 +1051,7 @@ 
 		 * @param WC_Order $order
 		 * @param object $source
 		 */
-		return apply_filters( 'wc_stripe_generate_create_intent_request', $request, $order, $prepared_source );
+		return apply_filters('wc_stripe_generate_create_intent_request', $request, $order, $prepared_source);
 	}
 
 	/**
@@ -1061,27 +1060,27 @@ 
 	 * @param WC_Order $order The order that is being paid for.
 	 * @return array          The level 3 data to send to Stripe.
 	 */
-	public function get_level3_data_from_order( $order ) {
+	public function get_level3_data_from_order($order) {
 		// WC Versions before 3.0 don't support postcodes and are
 		// incompatible with level3 data.
-		if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
+		if (WC_Stripe_Helper::is_wc_lt('3.0')) {
 			return array();
 		}
 
 		// Get the order items. Don't need their keys, only their values.
 		// Order item IDs are used as keys in the original order items array.
-		$order_items = array_values( $order->get_items() );
+		$order_items = array_values($order->get_items());
 		$currency    = $order->get_currency();
 
-		$stripe_line_items = array_map(function( $item ) use ( $currency ) {
+		$stripe_line_items = array_map(function($item) use ($currency) {
 			$product_id          = $item->get_variation_id()
 				? $item->get_variation_id()
 				: $item->get_product_id();
-			$product_description = substr( $item->get_name(), 0, 26 );
+			$product_description = substr($item->get_name(), 0, 26);
 			$quantity            = $item->get_quantity();
-			$unit_cost           = WC_Stripe_Helper::get_stripe_amount( ( $item->get_subtotal() / $quantity ), $currency );
-			$tax_amount          = WC_Stripe_Helper::get_stripe_amount( $item->get_total_tax(), $currency );
-			$discount_amount     = WC_Stripe_Helper::get_stripe_amount( $item->get_subtotal() - $item->get_total(), $currency );
+			$unit_cost           = WC_Stripe_Helper::get_stripe_amount(($item->get_subtotal() / $quantity), $currency);
+			$tax_amount          = WC_Stripe_Helper::get_stripe_amount($item->get_total_tax(), $currency);
+			$discount_amount     = WC_Stripe_Helper::get_stripe_amount($item->get_subtotal() - $item->get_total(), $currency);
 
 			return (object) array(
 				'product_code'        => (string) $product_id, // Up to 12 characters that uniquely identify the product.
@@ -1096,19 +1095,19 @@ 
 		$level3_data = array(
 			'merchant_reference'   => $order->get_id(), // An alphanumeric string of up to  characters in length. This unique value is assigned by the merchant to identify the order. Also known as an “Order ID”.
 
-			'shipping_amount'      => WC_Stripe_Helper::get_stripe_amount( $order->get_shipping_total() + $order->get_shipping_tax(), $currency), // The shipping cost, in cents, as a non-negative integer.
+			'shipping_amount'      => WC_Stripe_Helper::get_stripe_amount($order->get_shipping_total() + $order->get_shipping_tax(), $currency), // The shipping cost, in cents, as a non-negative integer.
 			'line_items'           => $stripe_line_items,
 		);
 
 		// The customer’s U.S. shipping ZIP code.
 		$shipping_address_zip = $order->get_shipping_postcode();
-		if ( $this->is_valid_us_zip_code( $shipping_address_zip ) ) {
+		if ($this->is_valid_us_zip_code($shipping_address_zip)) {
 			$level3_data['shipping_address_zip'] = $shipping_address_zip;
 		}
 
 		// The merchant’s U.S. shipping ZIP code.
-		$store_postcode = get_option( 'woocommerce_store_postcode' );
-		if ( $this->is_valid_us_zip_code( $store_postcode ) ) {
+		$store_postcode = get_option('woocommerce_store_postcode');
+		if ($this->is_valid_us_zip_code($store_postcode)) {
 			$level3_data['shipping_from_zip'] = $store_postcode;
 		}
 
@@ -1122,20 +1121,20 @@ 
 	 * @param object   $prepared_source The source that is used for the payment.
 	 * @return object                   An intent or an error.
 	 */
-	public function create_intent( $order, $prepared_source ) {
-		$request = $this->generate_create_intent_request( $order, $prepared_source );
+	public function create_intent($order, $prepared_source) {
+		$request = $this->generate_create_intent_request($order, $prepared_source);
 
 		// Create an intent that awaits an action.
-		$intent = WC_Stripe_API::request( $request, 'payment_intents' );
-		if ( ! empty( $intent->error ) ) {
+		$intent = WC_Stripe_API::request($request, 'payment_intents');
+		if ( ! empty($intent->error)) {
 			return $intent;
 		}
 
-		$order_id = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
-		WC_Stripe_Logger::log( "Stripe PaymentIntent $intent->id initiated for order $order_id" );
+		$order_id = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
+		WC_Stripe_Logger::log("Stripe PaymentIntent $intent->id initiated for order $order_id");
 
 		// Save the intent ID to the order.
-		$this->save_intent_to_order( $order, $intent );
+		$this->save_intent_to_order($order, $intent);
 
 		return $intent;
 	}
@@ -1148,27 +1147,27 @@ 
 	 * @param object   $prepared_source Currently selected source.
 	 * @return object                   An updated intent.
 	 */
-	public function update_existing_intent( $intent, $order, $prepared_source ) {
+	public function update_existing_intent($intent, $order, $prepared_source) {
 		$request = array();
 
-		if ( $prepared_source->source !== $intent->source ) {
+		if ($prepared_source->source !== $intent->source) {
 			$request['source'] = $prepared_source->source;
 		}
 
-		$new_amount = WC_Stripe_Helper::get_stripe_amount( $order->get_total() );
-		if ( $intent->amount !== $new_amount ) {
+		$new_amount = WC_Stripe_Helper::get_stripe_amount($order->get_total());
+		if ($intent->amount !== $new_amount) {
 			$request['amount'] = $new_amount;
 		}
 
-		if ( $prepared_source->customer && $intent->customer !== $prepared_source->customer ) {
+		if ($prepared_source->customer && $intent->customer !== $prepared_source->customer) {
 			$request['customer'] = $prepared_source->customer;
 		}
 
-		if ( empty( $request ) ) {
+		if (empty($request)) {
 			return $intent;
 		}
 
-		$level3_data = $this->get_level3_data_from_order( $order );
+		$level3_data = $this->get_level3_data_from_order($order);
 		return WC_Stripe_API::request_with_level3_data(
 			$request,
 			"payment_intents/$intent->id",
@@ -1186,8 +1185,8 @@ 
 	 * @param object   $prepared_source The source that is being charged.
 	 * @return object                   Either an error or the updated intent.
 	 */
-	public function confirm_intent( $intent, $order, $prepared_source ) {
-		if ( 'requires_confirmation' !== $intent->status ) {
+	public function confirm_intent($intent, $order, $prepared_source) {
+		if ('requires_confirmation' !== $intent->status) {
 			return $intent;
 		}
 
@@ -1196,7 +1195,7 @@ 
 			'source' => $prepared_source->source,
 		);
 
-		$level3_data = $this->get_level3_data_from_order( $order );
+		$level3_data = $this->get_level3_data_from_order($order);
 		$confirmed_intent = WC_Stripe_API::request_with_level3_data(
 			$confirm_request,
 			"payment_intents/$intent->id/confirm",
@@ -1204,16 +1203,16 @@ 
 			$order
 		);
 
-		if ( ! empty( $confirmed_intent->error ) ) {
+		if ( ! empty($confirmed_intent->error)) {
 			return $confirmed_intent;
 		}
 
 		// Save a note about the status of the intent.
-		$order_id = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
-		if ( 'succeeded' === $confirmed_intent->status ) {
-			WC_Stripe_Logger::log( "Stripe PaymentIntent $intent->id succeeded for order $order_id" );
-		} elseif ( 'requires_action' === $confirmed_intent->status ) {
-			WC_Stripe_Logger::log( "Stripe PaymentIntent $intent->id requires authentication for order $order_id" );
+		$order_id = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
+		if ('succeeded' === $confirmed_intent->status) {
+			WC_Stripe_Logger::log("Stripe PaymentIntent $intent->id succeeded for order $order_id");
+		} elseif ('requires_action' === $confirmed_intent->status) {
+			WC_Stripe_Logger::log("Stripe PaymentIntent $intent->id requires authentication for order $order_id");
 		}
 
 		return $confirmed_intent;
@@ -1226,16 +1225,16 @@ 
 	 * @param WC_Order $order For to which the source applies.
 	 * @param stdClass $intent Payment intent information.
 	 */
-	public function save_intent_to_order( $order, $intent ) {
-		$order_id = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
+	public function save_intent_to_order($order, $intent) {
+		$order_id = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
 
-		if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-			update_post_meta( $order_id, '_stripe_intent_id', $intent->id );
+		if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+			update_post_meta($order_id, '_stripe_intent_id', $intent->id);
 		} else {
-			$order->update_meta_data( '_stripe_intent_id', $intent->id );
+			$order->update_meta_data('_stripe_intent_id', $intent->id);
 		}
 
-		if ( is_callable( array( $order, 'save' ) ) ) {
+		if (is_callable(array($order, 'save'))) {
 			$order->save();
 		}
 	}
@@ -1247,28 +1246,28 @@ 
 	 * @param WC_Order $order The order to retrieve an intent for.
 	 * @return obect|bool     Either the intent object or `false`.
 	 */
-	public function get_intent_from_order( $order ) {
-		$order_id = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
+	public function get_intent_from_order($order) {
+		$order_id = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
 
-		if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-			$intent_id = get_post_meta( $order_id, '_stripe_intent_id', true );
+		if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+			$intent_id = get_post_meta($order_id, '_stripe_intent_id', true);
 		} else {
-			$intent_id = $order->get_meta( '_stripe_intent_id' );
+			$intent_id = $order->get_meta('_stripe_intent_id');
 		}
 
-		if ( $intent_id ) {
-			return WC_Stripe_API::request( array(), "payment_intents/$intent_id", 'GET' );
+		if ($intent_id) {
+			return WC_Stripe_API::request(array(), "payment_intents/$intent_id", 'GET');
 		}
 
 		// The order doesn't have a payment intent, but it may have a setup intent.
-		if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-			$intent_id = get_post_meta( $order_id, '_stripe_setup_intent', true );
+		if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+			$intent_id = get_post_meta($order_id, '_stripe_setup_intent', true);
 		} else {
-			$intent_id = $order->get_meta( '_stripe_setup_intent' );
+			$intent_id = $order->get_meta('_stripe_setup_intent');
 		}
 
-		if ( $intent_id ) {
-			return WC_Stripe_API::request( array(), "setup_intents/$intent_id", 'GET' );
+		if ($intent_id) {
+			return WC_Stripe_API::request(array(), "setup_intents/$intent_id", 'GET');
 		}
 
 		return false;
@@ -1282,18 +1281,18 @@ 
 	 * @param stdClass $intent The intent that is being processed.
 	 * @return bool            A flag that indicates whether the order is already locked.
 	 */
-	public function lock_order_payment( $order, $intent = null ) {
-		$order_id       = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
+	public function lock_order_payment($order, $intent = null) {
+		$order_id       = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
 		$transient_name = 'wc_stripe_processing_intent_' . $order_id;
-		$processing     = get_transient( $transient_name );
+		$processing     = get_transient($transient_name);
 
 		// Block the process if the same intent is already being handled.
-		if ( "-1" === $processing || ( isset( $intent->id ) && $processing === $intent->id ) ) {
+		if ("-1" === $processing || (isset($intent->id) && $processing === $intent->id)) {
 			return true;
 		}
 
 		// Save the new intent as a transient, eventually overwriting another one.
-		set_transient( $transient_name, empty( $intent ) ? '-1' : $intent->id, 5 * MINUTE_IN_SECONDS );
+		set_transient($transient_name, empty($intent) ? '-1' : $intent->id, 5 * MINUTE_IN_SECONDS);
 
 		return false;
 	}
@@ -1304,9 +1303,9 @@ 
 	 * @since 4.2
 	 * @param WC_Order $order The order that is being unlocked.
 	 */
-	public function unlock_order_payment( $order ) {
-		$order_id = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
-		delete_transient( 'wc_stripe_processing_intent_' . $order_id );
+	public function unlock_order_payment($order) {
+		$order_id = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
+		delete_transient('wc_stripe_processing_intent_' . $order_id);
 	}
 
 	/**
@@ -1316,9 +1315,9 @@ 
 	 * @param object $response The response from Stripe.
 	 * @return boolean Whether or not it's a 'authentication_required' error
 	 */
-	public function is_authentication_required_for_payment( $response ) {
-		return ( ! empty( $response->error ) && 'authentication_required' === $response->error->code )
-			|| ( ! empty( $response->last_payment_error ) && 'authentication_required' === $response->last_payment_error->code );
+	public function is_authentication_required_for_payment($response) {
+		return ( ! empty($response->error) && 'authentication_required' === $response->error->code)
+			|| ( ! empty($response->last_payment_error) && 'authentication_required' === $response->last_payment_error->code);
 	}
 
 	/**
@@ -1328,21 +1327,21 @@ 
 	 * @param object   $prepared_source The source, entered/chosen by the customer.
 	 * @return string                   The client secret of the intent, used for confirmation in JS.
 	 */
-	public function setup_intent( $order, $prepared_source ) {
-		$order_id     = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
-		$setup_intent = WC_Stripe_API::request( array(
+	public function setup_intent($order, $prepared_source) {
+		$order_id     = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
+		$setup_intent = WC_Stripe_API::request(array(
 			'payment_method' => $prepared_source->source,
 			'customer'       => $prepared_source->customer,
 			'confirm'        => 'true',
-		), 'setup_intents' );
+		), 'setup_intents');
 
-		if ( is_wp_error( $setup_intent ) ) {
-			WC_Stripe_Logger::log( "Unable to create SetupIntent for Order #$order_id: " . print_r( $setup_intent, true ) );
-		} elseif ( 'requires_action' === $setup_intent->status ) {
-			if ( WC_Stripe_Helper::is_wc_lt( '3.0' ) ) {
-				update_post_meta( $order_id, '_stripe_setup_intent', $setup_intent->id );
+		if (is_wp_error($setup_intent)) {
+			WC_Stripe_Logger::log("Unable to create SetupIntent for Order #$order_id: " . print_r($setup_intent, true));
+		} elseif ('requires_action' === $setup_intent->status) {
+			if (WC_Stripe_Helper::is_wc_lt('3.0')) {
+				update_post_meta($order_id, '_stripe_setup_intent', $setup_intent->id);
 			} else {
-				$order->update_meta_data( '_stripe_setup_intent', $setup_intent->id );
+				$order->update_meta_data('_stripe_setup_intent', $setup_intent->id);
 				$order->save();
 			}
 
@@ -1358,12 +1357,12 @@ 
 	 * @param float    $amount          The amount to charge. If not specified, it will be read from the order.
 	 * @return object                   An intent or an error.
 	 */
-	public function create_and_confirm_intent_for_off_session( $order, $prepared_source, $amount = NULL ) {
+	public function create_and_confirm_intent_for_off_session($order, $prepared_source, $amount = NULL) {
 		// The request for a charge contains metadata for the intent.
-		$full_request = $this->generate_payment_request( $order, $prepared_source );
+		$full_request = $this->generate_payment_request($order, $prepared_source);
 
 		$request = array(
-			'amount'               => $amount ? WC_Stripe_Helper::get_stripe_amount( $amount, $full_request['currency'] ) : $full_request['amount'],
+			'amount'               => $amount ? WC_Stripe_Helper::get_stripe_amount($amount, $full_request['currency']) : $full_request['amount'],
 			'currency'             => $full_request['currency'],
 			'description'          => $full_request['description'],
 			'metadata'             => $full_request['metadata'],
@@ -1375,44 +1374,44 @@ 
 			'confirmation_method'  => 'automatic',
 		);
 
-		if ( isset( $full_request['statement_descriptor'] ) ) {
+		if (isset($full_request['statement_descriptor'])) {
 			$request['statement_descriptor'] = $full_request['statement_descriptor'];
 		}
 
-		if ( isset( $full_request['customer'] ) ) {
+		if (isset($full_request['customer'])) {
 			$request['customer'] = $full_request['customer'];
 		}
 
-		if ( isset( $full_request['source'] ) ) {
+		if (isset($full_request['source'])) {
 			$request['source'] = $full_request['source'];
 		}
 
-		$level3_data = $this->get_level3_data_from_order( $order );
+		$level3_data = $this->get_level3_data_from_order($order);
 		$intent = WC_Stripe_API::request_with_level3_data(
 			$request,
 			'payment_intents',
 			$level3_data,
 			$order
 		);
-		$is_authentication_required = $this->is_authentication_required_for_payment( $intent );
+		$is_authentication_required = $this->is_authentication_required_for_payment($intent);
 
-		if ( ! empty( $intent->error ) && ! $is_authentication_required ) {
+		if ( ! empty($intent->error) && ! $is_authentication_required) {
 			return $intent;
 		}
 
-		$intent_id      = ( ! empty( $intent->error )
+		$intent_id = ( ! empty($intent->error)
 			? $intent->error->payment_intent->id
 			: $intent->id
 		);
-		$payment_intent = ( ! empty( $intent->error )
+		$payment_intent = ( ! empty($intent->error)
 			? $intent->error->payment_intent
 			: $intent
 		);
-		$order_id       = WC_Stripe_Helper::is_wc_lt( '3.0' ) ? $order->id : $order->get_id();
-		WC_Stripe_Logger::log( "Stripe PaymentIntent $intent_id initiated for order $order_id" );
+		$order_id = WC_Stripe_Helper::is_wc_lt('3.0') ? $order->id : $order->get_id();
+		WC_Stripe_Logger::log("Stripe PaymentIntent $intent_id initiated for order $order_id");
 
 		// Save the intent ID to the order.
-		$this->save_intent_to_order( $order, $payment_intent );
+		$this->save_intent_to_order($order, $payment_intent);
 
 		return $intent;
 	}
@@ -1423,7 +1422,7 @@ 
 	 * @param string $zip The ZIP code to verify.
 	 * @return boolean
 	 */
-	public function is_valid_us_zip_code( $zip ) {
-		return ! empty( $zip ) && preg_match( '/^\d{5,5}(-\d{4,4})?$/', $zip );
+	public function is_valid_us_zip_code($zip) {
+		return ! empty($zip) && preg_match('/^\d{5,5}(-\d{4,4})?$/', $zip);
 	}
 }