AyeCode / invoicing

includes/class-wpinv-ajax.php

Spacing +324 added lines, -324 removed lines

@@ -6,7 +6,7 @@ 
  * @package Invoicing
  */
  
-defined( 'ABSPATH' ) || exit;
+defined('ABSPATH') || exit;
 
 /**
  * WPInv_Ajax class.
@@ -17,8 +17,8 @@ 
 	 * Hook in ajax handlers.
 	 */
 	public static function init() {
-		add_action( 'init', array( __CLASS__, 'define_ajax' ), 0 );
-		add_action( 'template_redirect', array( __CLASS__, 'do_wpinv_ajax' ), 0 );
+		add_action('init', array(__CLASS__, 'define_ajax'), 0);
+		add_action('template_redirect', array(__CLASS__, 'do_wpinv_ajax'), 0);
 		self::add_ajax_events();
     }
 
@@ -27,11 +27,11 @@ 
 	 */
 	public static function define_ajax() {
 
-		if ( ! empty( $_GET['wpinv-ajax'] ) ) {
-			getpaid_maybe_define_constant( 'DOING_AJAX', true );
-			getpaid_maybe_define_constant( 'WPInv_DOING_AJAX', true );
-			if ( ! WP_DEBUG || ( WP_DEBUG && ! WP_DEBUG_DISPLAY ) ) {
-				/** @scrutinizer ignore-unhandled */ @ini_set( 'display_errors', 0 );
+		if (!empty($_GET['wpinv-ajax'])) {
+			getpaid_maybe_define_constant('DOING_AJAX', true);
+			getpaid_maybe_define_constant('WPInv_DOING_AJAX', true);
+			if (!WP_DEBUG || (WP_DEBUG && !WP_DEBUG_DISPLAY)) {
+				/** @scrutinizer ignore-unhandled */ @ini_set('display_errors', 0);
 			}
 			$GLOBALS['wpdb']->hide_errors();
 		}
@@ -44,13 +44,13 @@ 
 	 * @since 1.0.18
 	 */
 	private static function wpinv_ajax_headers() {
-		if ( ! headers_sent() ) {
+		if (!headers_sent()) {
 			send_origin_headers();
 			send_nosniff_header();
 			nocache_headers();
-			header( 'Content-Type: text/html; charset=' . get_option( 'blog_charset' ) );
-			header( 'X-Robots-Tag: noindex' );
-			status_header( 200 );
+			header('Content-Type: text/html; charset=' . get_option('blog_charset'));
+			header('X-Robots-Tag: noindex');
+			status_header(200);
 		}
     }
     
@@ -60,16 +60,16 @@ 
 	public static function do_wpinv_ajax() {
 		global $wp_query;
 
-		if ( ! empty( $_GET['wpinv-ajax'] ) ) {
-			$wp_query->set( 'wpinv-ajax', sanitize_text_field( wp_unslash( $_GET['wpinv-ajax'] ) ) );
+		if (!empty($_GET['wpinv-ajax'])) {
+			$wp_query->set('wpinv-ajax', sanitize_text_field(wp_unslash($_GET['wpinv-ajax'])));
 		}
 
-		$action = $wp_query->get( 'wpinv-ajax' );
+		$action = $wp_query->get('wpinv-ajax');
 
-		if ( $action ) {
+		if ($action) {
 			self::wpinv_ajax_headers();
-			$action = sanitize_text_field( $action );
-			do_action( 'wpinv_ajax_' . $action );
+			$action = sanitize_text_field($action);
+			do_action('wpinv_ajax_' . $action);
 			wp_die();
 		}
 
@@ -106,36 +106,36 @@ 
             'file_upload'                 => true,
         );
 
-        foreach ( $ajax_events as $ajax_event => $nopriv ) {
-            add_action( 'wp_ajax_wpinv_' . $ajax_event, array( __CLASS__, $ajax_event ) );
-            add_action( 'wp_ajax_getpaid_' . $ajax_event, array( __CLASS__, $ajax_event ) );
+        foreach ($ajax_events as $ajax_event => $nopriv) {
+            add_action('wp_ajax_wpinv_' . $ajax_event, array(__CLASS__, $ajax_event));
+            add_action('wp_ajax_getpaid_' . $ajax_event, array(__CLASS__, $ajax_event));
 
-            if ( $nopriv ) {
-                add_action( 'wp_ajax_nopriv_wpinv_' . $ajax_event, array( __CLASS__, $ajax_event ) );
-                add_action( 'wp_ajax_nopriv_getpaid_' . $ajax_event, array( __CLASS__, $ajax_event ) );
-                add_action( 'wpinv_ajax_' . $ajax_event, array( __CLASS__, $ajax_event ) );
+            if ($nopriv) {
+                add_action('wp_ajax_nopriv_wpinv_' . $ajax_event, array(__CLASS__, $ajax_event));
+                add_action('wp_ajax_nopriv_getpaid_' . $ajax_event, array(__CLASS__, $ajax_event));
+                add_action('wpinv_ajax_' . $ajax_event, array(__CLASS__, $ajax_event));
             }
         }
     }
     
     public static function add_note() {
-        check_ajax_referer( 'add-invoice-note', '_nonce' );
+        check_ajax_referer('add-invoice-note', '_nonce');
 
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             die(-1);
         }
 
-        $post_id   = absint( $_POST['post_id'] );
-        $note      = wp_kses_post( trim( stripslashes( $_POST['note'] ) ) );
-        $note_type = sanitize_text_field( $_POST['note_type'] );
+        $post_id   = absint($_POST['post_id']);
+        $note      = wp_kses_post(trim(stripslashes($_POST['note'])));
+        $note_type = sanitize_text_field($_POST['note_type']);
 
         $is_customer_note = $note_type == 'customer' ? 1 : 0;
 
-        if ( $post_id > 0 ) {
-            $note_id = wpinv_insert_payment_note( $post_id, $note, $is_customer_note );
+        if ($post_id > 0) {
+            $note_id = wpinv_insert_payment_note($post_id, $note, $is_customer_note);
 
-            if ( $note_id > 0 && !is_wp_error( $note_id ) ) {
-                wpinv_get_invoice_note_line_item( $note_id );
+            if ($note_id > 0 && !is_wp_error($note_id)) {
+                wpinv_get_invoice_note_line_item($note_id);
             }
         }
 
@@ -143,16 +143,16 @@ 
     }
 
     public static function delete_note() {
-        check_ajax_referer( 'delete-invoice-note', '_nonce' );
+        check_ajax_referer('delete-invoice-note', '_nonce');
 
-        if ( !wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             die(-1);
         }
 
-        $note_id = (int)$_POST['note_id'];
+        $note_id = (int) $_POST['note_id'];
 
-        if ( $note_id > 0 ) {
-            wp_delete_comment( $note_id, true );
+        if ($note_id > 0) {
+            wp_delete_comment($note_id, true);
         }
 
         die();
@@ -170,34 +170,34 @@ 
     public static function get_billing_details() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
         // Can the user manage the plugin?
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             die(-1);
         }
 
         // Do we have a user id?
         $user_id = $_GET['user_id'];
 
-        if ( empty( $user_id ) || ! is_numeric( $user_id ) ) {
+        if (empty($user_id) || !is_numeric($user_id)) {
             die(-1);
         }
 
         // Fetch the billing details.
-        $billing_details    = wpinv_get_user_address( $user_id );
-        $billing_details    = apply_filters( 'wpinv_ajax_billing_details', $billing_details, $user_id );
+        $billing_details    = wpinv_get_user_address($user_id);
+        $billing_details    = apply_filters('wpinv_ajax_billing_details', $billing_details, $user_id);
 
         // unset the user id and email.
-        $to_ignore = array( 'user_id', 'email' );
+        $to_ignore = array('user_id', 'email');
 
-        foreach ( $to_ignore as $key ) {
-            if ( isset( $billing_details[ $key ] ) ) {
-                unset( $billing_details[ $key ] );
+        foreach ($to_ignore as $key) {
+            if (isset($billing_details[$key])) {
+                unset($billing_details[$key]);
             }
         }
 
-        wp_send_json_success( $billing_details );
+        wp_send_json_success($billing_details);
 
     }
 
@@ -207,47 +207,47 @@ 
     public static function check_new_user_email() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
         // Can the user manage the plugin?
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             die(-1);
         }
 
         // We need an email address.
-        if ( empty( $_GET['email'] ) ) {
-            _e( "Provide the new user's email address", 'invoicing' );
+        if (empty($_GET['email'])) {
+            _e("Provide the new user's email address", 'invoicing');
             exit;
         }
 
         // Ensure the email is valid.
-        $email = sanitize_text_field( $_GET['email'] );
-        if ( ! is_email( $email ) ) {
-            _e( 'Invalid email address', 'invoicing' );
+        $email = sanitize_text_field($_GET['email']);
+        if (!is_email($email)) {
+            _e('Invalid email address', 'invoicing');
             exit;
         }
 
         // And it does not exist.
-        $id = email_exists( $email );
-        if ( $id ) {
-            wp_send_json_success( compact( 'id' ) );
+        $id = email_exists($email);
+        if ($id) {
+            wp_send_json_success(compact('id'));
         }
 
-        wp_send_json_success( true );
+        wp_send_json_success(true);
     }
     
     public static function run_tool() {
-        check_ajax_referer( 'wpinv-nonce', '_nonce' );
-        if ( !wpinv_current_user_can_manage_invoicing() ) {
+        check_ajax_referer('wpinv-nonce', '_nonce');
+        if (!wpinv_current_user_can_manage_invoicing()) {
             die(-1);
         }
         
-        $tool = sanitize_text_field( $_POST['tool'] );
+        $tool = sanitize_text_field($_POST['tool']);
         
-        do_action( 'wpinv_run_tool' );
+        do_action('wpinv_run_tool');
         
-        if ( !empty( $tool ) ) {
-            do_action( 'wpinv_tool_' . $tool );
+        if (!empty($tool)) {
+            do_action('wpinv_tool_' . $tool);
         }
     }
 
@@ -258,43 +258,43 @@ 
         global $getpaid_force_checkbox;
 
         // Check nonce.
-        check_ajax_referer( 'getpaid_form_nonce' );
+        check_ajax_referer('getpaid_form_nonce');
 
         // Is the request set up correctly?
-		if ( empty( $_GET['form'] ) && empty( $_GET['item'] ) && empty( $_GET['invoice'] ) ) {
+		if (empty($_GET['form']) && empty($_GET['item']) && empty($_GET['invoice'])) {
 			echo aui()->alert(
 				array(
 					'type'    => 'warning',
-					'content' => __( 'No payment form or item provided', 'invoicing' ),
+					'content' => __('No payment form or item provided', 'invoicing'),
 				)
             );
             exit;
         }
 
         // Payment form or button?
-		if ( ! empty( $_GET['form'] ) ) {
-            $form = urldecode( $_GET['form'] );
+		if (!empty($_GET['form'])) {
+            $form = urldecode($_GET['form']);
 
-            if ( false !== strpos( $form, '|' ) ) {
-                $form_pos = strpos( $form, '|' );
-                $_items   = getpaid_convert_items_to_array( substr( $form, $form_pos + 1 ) );
-                $form     = substr( $form, 0, $form_pos );
+            if (false !== strpos($form, '|')) {
+                $form_pos = strpos($form, '|');
+                $_items   = getpaid_convert_items_to_array(substr($form, $form_pos + 1));
+                $form     = substr($form, 0, $form_pos);
 
                 // Retrieve appropriate payment form.
-                $payment_form = new GetPaid_Payment_Form( $form );
-                $payment_form = $payment_form->exists() ? $payment_form : new GetPaid_Payment_Form( wpinv_get_default_payment_form() );
+                $payment_form = new GetPaid_Payment_Form($form);
+                $payment_form = $payment_form->exists() ? $payment_form : new GetPaid_Payment_Form(wpinv_get_default_payment_form());
 
                 $items    = array();
                 $item_ids = array();
 
-                foreach ( $_items as $item_id => $qty ) {
-                    if ( ! in_array( $item_id, $item_ids ) ) {
-                        $item = new GetPaid_Form_Item( $item_id );
-                        $item->set_quantity( $qty );
+                foreach ($_items as $item_id => $qty) {
+                    if (!in_array($item_id, $item_ids)) {
+                        $item = new GetPaid_Form_Item($item_id);
+                        $item->set_quantity($qty);
 
-                        if ( 0 == $qty ) {
-                            $item->set_allow_quantities( true );
-                            $item->set_is_required( false );
+                        if (0 == $qty) {
+                            $item->set_allow_quantities(true);
+                            $item->set_is_required(false);
                             $getpaid_force_checkbox = true;
                         }
 
@@ -303,10 +303,10 @@ 
                     }
                 }
 
-                if ( ! $payment_form->is_default() ) {
+                if (!$payment_form->is_default()) {
 
-                    foreach ( $payment_form->get_items() as $item ) {
-                        if ( ! in_array( $item->get_id(), $item_ids ) ) {
+                    foreach ($payment_form->get_items() as $item) {
+                        if (!in_array($item->get_id(), $item_ids)) {
                             $item_ids[] = $item->get_id();
                             $items[]    = $item;
                         }
@@ -314,23 +314,23 @@ 
 
                 }
 
-                $payment_form->set_items( $items );
-                $extra_items     = esc_attr( getpaid_convert_items_to_string( $_items ) );
-                $extra_items_key = md5( NONCE_KEY . AUTH_KEY . $extra_items );
+                $payment_form->set_items($items);
+                $extra_items     = esc_attr(getpaid_convert_items_to_string($_items));
+                $extra_items_key = md5(NONCE_KEY . AUTH_KEY . $extra_items);
                 $extra_items     = "<input type='hidden' name='getpaid-form-items' value='$extra_items' />";
                 $extra_items    .= "<input type='hidden' name='getpaid-form-items-key' value='$extra_items_key' />";
-                $payment_form->display( $extra_items );
+                $payment_form->display($extra_items);
                 $getpaid_force_checkbox = false;
 
             } else {
-                getpaid_display_payment_form( $form );
+                getpaid_display_payment_form($form);
             }
 
-		} else if( ! empty( $_GET['invoice'] ) ) {
-		    getpaid_display_invoice_payment_form( urldecode( $_GET['invoice'] ) );
+		} else if (!empty($_GET['invoice'])) {
+		    getpaid_display_invoice_payment_form(urldecode($_GET['invoice']));
         } else {
-			$items = getpaid_convert_items_to_array( urldecode( $_GET['item'] ) );
-		    getpaid_display_item_payment_form( $items );
+			$items = getpaid_convert_items_to_array(urldecode($_GET['item']));
+		    getpaid_display_item_payment_form($items);
         }
 
         exit;
@@ -345,17 +345,17 @@ 
     public static function payment_form() {
 
         // Check nonce.
-        check_ajax_referer( 'getpaid_form_nonce' );
+        check_ajax_referer('getpaid_form_nonce');
 
         // ... form fields...
-        if ( empty( $_POST['getpaid_payment_form_submission'] ) ) {
-            _e( 'Error: Reload the page and try again.', 'invoicing' );
+        if (empty($_POST['getpaid_payment_form_submission'])) {
+            _e('Error: Reload the page and try again.', 'invoicing');
             exit;
         }
 
         // Process the payment form.
-        $checkout_class = apply_filters( 'getpaid_checkout_class', 'GetPaid_Checkout' );
-        $checkout       = new $checkout_class( new GetPaid_Payment_Form_Submission() );
+        $checkout_class = apply_filters('getpaid_checkout_class', 'GetPaid_Checkout');
+        $checkout       = new $checkout_class(new GetPaid_Payment_Form_Submission());
         $checkout->process_checkout();
 
         exit;
@@ -368,55 +368,55 @@ 
      */
     public static function get_payment_form_states_field() {
 
-        if ( empty( $_GET['country'] ) || empty( $_GET['form'] ) ) {
+        if (empty($_GET['country']) || empty($_GET['form'])) {
             exit;
         }
 
-        $elements = getpaid_get_payment_form_elements( $_GET['form'] );
+        $elements = getpaid_get_payment_form_elements($_GET['form']);
 
-        if ( empty( $elements ) ) {
+        if (empty($elements)) {
             exit;
         }
 
         $address_fields = array();
-        foreach ( $elements as $element ) {
-            if ( 'address' === $element['type'] ) {
+        foreach ($elements as $element) {
+            if ('address' === $element['type']) {
                 $address_fields = $element;
                 break;
             }
         }
 
-        if ( empty( $address_fields ) ) {
+        if (empty($address_fields)) {
             exit;
         }
 
-        foreach ( $address_fields['fields'] as $address_field ) {
+        foreach ($address_fields['fields'] as $address_field) {
 
-            if ( 'wpinv_state' == $address_field['name'] ) {
+            if ('wpinv_state' == $address_field['name']) {
 
-                $wrap_class  = getpaid_get_form_element_grid_class( $address_field );
-                $wrap_class  = esc_attr( "$wrap_class getpaid-address-field-wrapper" );
-                $placeholder = empty( $address_field['placeholder'] ) ? '' : esc_attr( $address_field['placeholder'] );
-                $description = empty( $address_field['description'] ) ? '' : wp_kses_post( $address_field['description'] );
-                $value       = is_user_logged_in() ? get_user_meta( get_current_user_id(), '_wpinv_state', true ) : '';
-                $label       = empty( $address_field['label'] ) ? '' : wp_kses_post( $address_field['label'] );
+                $wrap_class  = getpaid_get_form_element_grid_class($address_field);
+                $wrap_class  = esc_attr("$wrap_class getpaid-address-field-wrapper");
+                $placeholder = empty($address_field['placeholder']) ? '' : esc_attr($address_field['placeholder']);
+                $description = empty($address_field['description']) ? '' : wp_kses_post($address_field['description']);
+                $value       = is_user_logged_in() ? get_user_meta(get_current_user_id(), '_wpinv_state', true) : '';
+                $label       = empty($address_field['label']) ? '' : wp_kses_post($address_field['label']);
 
-                if ( ! empty( $address_field['required'] ) ) {
+                if (!empty($address_field['required'])) {
                     $label .= "<span class='text-danger'> *</span>";
                 }
 
-                $html = getpaid_get_states_select_markup (
-                    sanitize_text_field( $_GET['country'] ),
+                $html = getpaid_get_states_select_markup(
+                    sanitize_text_field($_GET['country']),
                     $value,
                     $placeholder,
                     $label,
                     $description,
-                    ! empty( $address_field['required'] ),
+                    !empty($address_field['required']),
                     $wrap_class,
-                    wpinv_clean( $_GET['name'] )
+                    wpinv_clean($_GET['name'])
                 );
 
-                wp_send_json_success( $html );
+                wp_send_json_success($html);
                 exit;
 
             }
@@ -432,66 +432,66 @@ 
     public static function recalculate_invoice_totals() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             exit;
         }
 
         // We need an invoice.
-        if ( empty( $_POST['post_id'] ) ) {
+        if (empty($_POST['post_id'])) {
             exit;
         }
 
         // Fetch the invoice.
-        $invoice = new WPInv_Invoice( wpinv_clean( $_POST['post_id'] ) );
+        $invoice = new WPInv_Invoice(wpinv_clean($_POST['post_id']));
 
         // Ensure it exists.
-        if ( ! $invoice->get_id() ) {
+        if (!$invoice->get_id()) {
             exit;
         }
 
         // Maybe set the country, state, currency.
-        foreach ( array( 'country', 'state', 'currency', 'vat_number', 'discount_code' ) as $key ) {
-            if ( isset( $_POST[ $key ] ) ) {
+        foreach (array('country', 'state', 'currency', 'vat_number', 'discount_code') as $key) {
+            if (isset($_POST[$key])) {
                 $method = "set_$key";
-                $invoice->$method( sanitize_text_field( $_POST[ $key ] ) );
+                $invoice->$method(sanitize_text_field($_POST[$key]));
             }
         }
 
         // Maybe disable taxes.
-        $invoice->set_disable_taxes( ! empty( $_POST['taxes'] ) );
+        $invoice->set_disable_taxes(!empty($_POST['taxes']));
 
         // Discount code.
-        if ( ! $invoice->is_paid() && ! $invoice->is_refunded() ) {
-            $discount = new WPInv_Discount( $invoice->get_discount_code() );
-            if ( $discount->exists() ) {
-                $invoice->add_discount( getpaid_calculate_invoice_discount( $invoice, $discount ) );
+        if (!$invoice->is_paid() && !$invoice->is_refunded()) {
+            $discount = new WPInv_Discount($invoice->get_discount_code());
+            if ($discount->exists()) {
+                $invoice->add_discount(getpaid_calculate_invoice_discount($invoice, $discount));
             } else {
-                $invoice->remove_discount( 'discount_code' );
+                $invoice->remove_discount('discount_code');
             }
         }
 
         // Recalculate totals.
         $invoice->recalculate_total();
 
-        $total        = wpinv_price( $invoice->get_total(), $invoice->get_currency() );
-        $suscriptions = getpaid_get_invoice_subscriptions( $invoice );
-        if ( is_a( $suscriptions, 'WPInv_Subscription' ) && $invoice->is_recurring() && $invoice->is_parent() && $invoice->get_total() != $invoice->get_recurring_total() ) {
-            $recurring_total = wpinv_price( $invoice->get_recurring_total(), $invoice->get_currency() );
-            $total          .= '<small class="form-text text-muted">' . sprintf( __( 'Recurring Price: %s', 'invoicing' ), $recurring_total ) . '</small>';
+        $total        = wpinv_price($invoice->get_total(), $invoice->get_currency());
+        $suscriptions = getpaid_get_invoice_subscriptions($invoice);
+        if (is_a($suscriptions, 'WPInv_Subscription') && $invoice->is_recurring() && $invoice->is_parent() && $invoice->get_total() != $invoice->get_recurring_total()) {
+            $recurring_total = wpinv_price($invoice->get_recurring_total(), $invoice->get_currency());
+            $total          .= '<small class="form-text text-muted">' . sprintf(__('Recurring Price: %s', 'invoicing'), $recurring_total) . '</small>';
         }
 
         $totals = array(
-            'subtotal' => wpinv_price( $invoice->get_subtotal(), $invoice->get_currency() ),
-            'discount' => wpinv_price( $invoice->get_total_discount(), $invoice->get_currency() ),
-            'tax'      => wpinv_price( $invoice->get_total_tax(), $invoice->get_currency() ),
+            'subtotal' => wpinv_price($invoice->get_subtotal(), $invoice->get_currency()),
+            'discount' => wpinv_price($invoice->get_total_discount(), $invoice->get_currency()),
+            'tax'      => wpinv_price($invoice->get_total_tax(), $invoice->get_currency()),
             'total'    => $total,
         );
 
-        $totals = apply_filters( 'getpaid_invoice_totals', $totals, $invoice );
+        $totals = apply_filters('getpaid_invoice_totals', $totals, $invoice);
 
-        wp_send_json_success( compact( 'totals' ) );
+        wp_send_json_success(compact('totals'));
     }
 
     /**
@@ -500,33 +500,33 @@ 
     public static function get_invoice_items() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             exit;
         }
 
         // We need an invoice and items.
-        if ( empty( $_POST['post_id'] ) ) {
+        if (empty($_POST['post_id'])) {
             exit;
         }
 
         // Fetch the invoice.
-        $invoice = new WPInv_Invoice( wpinv_clean( $_POST['post_id'] ) );
+        $invoice = new WPInv_Invoice(wpinv_clean($_POST['post_id']));
 
         // Ensure it exists.
-        if ( ! $invoice->get_id() ) {
+        if (!$invoice->get_id()) {
             exit;
         }
 
         // Return an array of invoice items.
         $items = array();
 
-        foreach ( $invoice->get_items() as $item ) {
-            $items[] = $item->prepare_data_for_invoice_edit_ajax(  $invoice->get_currency(), $invoice->is_renewal()  );
+        foreach ($invoice->get_items() as $item) {
+            $items[] = $item->prepare_data_for_invoice_edit_ajax($invoice->get_currency(), $invoice->is_renewal());
         }
 
-        wp_send_json_success( compact( 'items' ) );
+        wp_send_json_success(compact('items'));
     }
 
     /**
@@ -535,50 +535,50 @@ 
     public static function edit_invoice_item() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             exit;
         }
 
         // We need an invoice and item details.
-        if ( empty( $_POST['post_id'] ) || empty( $_POST['data'] ) ) {
+        if (empty($_POST['post_id']) || empty($_POST['data'])) {
             exit;
         }
 
         // Fetch the invoice.
-        $invoice = new WPInv_Invoice( wpinv_clean( $_POST['post_id'] ) );
+        $invoice = new WPInv_Invoice(wpinv_clean($_POST['post_id']));
 
         // Ensure it exists and its not been paid for.
-        if ( ! $invoice->get_id() || $invoice->is_paid() || $invoice->is_refunded() ) {
+        if (!$invoice->get_id() || $invoice->is_paid() || $invoice->is_refunded()) {
             exit;
         }
 
         // Format the data.
-        $data = wp_kses_post_deep( wp_unslash( wp_list_pluck( $_POST['data'], 'value', 'field' ) ) );
+        $data = wp_kses_post_deep(wp_unslash(wp_list_pluck($_POST['data'], 'value', 'field')));
 
         // Ensure that we have an item id.
-        if ( empty( $data['id'] ) ) {
+        if (empty($data['id'])) {
             exit;
         }
 
         // Abort if the invoice does not have the specified item.
-        $item = $invoice->get_item( (int) $data['id'] );
+        $item = $invoice->get_item((int) $data['id']);
 
-        if ( empty( $item ) ) {
+        if (empty($item)) {
             exit;
         }
 
         // Update the item.
-        $item->set_price( getpaid_standardize_amount( $data['price'] ) );
-        $item->set_name( sanitize_text_field( $data['name'] ) );
-        $item->set_description( wp_kses_post( $data['description'] ) );
-        $item->set_quantity( floatval( $data['quantity'] ) );
+        $item->set_price(getpaid_standardize_amount($data['price']));
+        $item->set_name(sanitize_text_field($data['name']));
+        $item->set_description(wp_kses_post($data['description']));
+        $item->set_quantity(floatval($data['quantity']));
 
         // Add it to the invoice.
-        $error = $invoice->add_item( $item );
+        $error = $invoice->add_item($item);
         $alert = false;
-        if ( is_wp_error( $error ) ) {
+        if (is_wp_error($error)) {
             $alert = $error->get_error_message();
         }
 
@@ -591,11 +591,11 @@ 
         // Return an array of invoice items.
         $items = array();
 
-        foreach ( $invoice->get_items() as $item ) {
-            $items[] = $item->prepare_data_for_invoice_edit_ajax(  $invoice->get_currency()  );
+        foreach ($invoice->get_items() as $item) {
+            $items[] = $item->prepare_data_for_invoice_edit_ajax($invoice->get_currency());
         }
 
-        wp_send_json_success( compact( 'items', 'alert' ) );
+        wp_send_json_success(compact('items', 'alert'));
     }
 
     /**
@@ -604,53 +604,53 @@ 
     public static function create_invoice_item() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             exit;
         }
 
         // We need an invoice and item details.
-        if ( empty( $_POST['invoice_id'] ) || empty( $_POST['_wpinv_quick'] ) ) {
+        if (empty($_POST['invoice_id']) || empty($_POST['_wpinv_quick'])) {
             exit;
         }
 
         // Fetch the invoice.
-        $invoice = new WPInv_Invoice( wpinv_clean( $_POST['invoice_id'] ) );
+        $invoice = new WPInv_Invoice(wpinv_clean($_POST['invoice_id']));
 
         // Ensure it exists and its not been paid for.
-        if ( ! $invoice->get_id() || $invoice->is_paid() || $invoice->is_refunded() ) {
+        if (!$invoice->get_id() || $invoice->is_paid() || $invoice->is_refunded()) {
             exit;
         }
 
         // Format the data.
-        $data = wp_unslash( $_POST['_wpinv_quick'] );
+        $data = wp_unslash($_POST['_wpinv_quick']);
 
         $item = new WPInv_Item();
-        $item->set_price( getpaid_standardize_amount( $data['price'] ) );
-        $item->set_name( sanitize_text_field( $data['name'] ) );
-        $item->set_description( wp_kses_post( $data['description'] ) );
-        $item->set_type( sanitize_text_field( $data['type'] ) );
-        $item->set_vat_rule( sanitize_text_field( $data['vat_rule'] ) );
-        $item->set_vat_class( sanitize_text_field( $data['vat_class'] ) );
-        $item->set_status( 'publish' );
+        $item->set_price(getpaid_standardize_amount($data['price']));
+        $item->set_name(sanitize_text_field($data['name']));
+        $item->set_description(wp_kses_post($data['description']));
+        $item->set_type(sanitize_text_field($data['type']));
+        $item->set_vat_rule(sanitize_text_field($data['vat_rule']));
+        $item->set_vat_class(sanitize_text_field($data['vat_class']));
+        $item->set_status('publish');
         $item->save();
 
-        if ( ! $item->exists() ) {
-            $alert = __( 'Could not create invoice item. Please try again.', 'invoicing' );
-            wp_send_json_success( compact( 'alert' ) );
+        if (!$item->exists()) {
+            $alert = __('Could not create invoice item. Please try again.', 'invoicing');
+            wp_send_json_success(compact('alert'));
         }
 
-        $item = new GetPaid_Form_Item( $item->get_id() );
-        $item->set_quantity( floatval( $data['qty'] ) );
+        $item = new GetPaid_Form_Item($item->get_id());
+        $item->set_quantity(floatval($data['qty']));
 
         // Add it to the invoice.
-        $error = $invoice->add_item( $item );
+        $error = $invoice->add_item($item);
         $alert = false;
 
-        if ( is_wp_error( $error ) ) {
+        if (is_wp_error($error)) {
             $alert = $error->get_error_message();
-            wp_send_json_success( compact( 'alert' ) );
+            wp_send_json_success(compact('alert'));
          }
 
         // Update totals.
@@ -663,9 +663,9 @@ 
         $invoice->recalculate_total();
         $invoice->save();
         ob_start();
-        GetPaid_Meta_Box_Invoice_Items::output_row( GetPaid_Meta_Box_Invoice_Items::get_columns( $invoice ), $item, $invoice );
+        GetPaid_Meta_Box_Invoice_Items::output_row(GetPaid_Meta_Box_Invoice_Items::get_columns($invoice), $item, $invoice);
         $row = ob_get_clean();
-        wp_send_json_success( compact( 'row' ) );
+        wp_send_json_success(compact('row'));
     }
 
     /**
@@ -674,33 +674,33 @@ 
     public static function remove_invoice_item() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             exit;
         }
 
         // We need an invoice and an item.
-        if ( empty( $_POST['post_id'] ) || empty( $_POST['item_id'] ) ) {
+        if (empty($_POST['post_id']) || empty($_POST['item_id'])) {
             exit;
         }
 
         // Fetch the invoice.
-        $invoice = new WPInv_Invoice( wpinv_clean( $_POST['post_id'] ) );
+        $invoice = new WPInv_Invoice(wpinv_clean($_POST['post_id']));
 
         // Ensure it exists and its not been paid for.
-        if ( ! $invoice->get_id() || $invoice->is_paid() || $invoice->is_refunded() ) {
+        if (!$invoice->get_id() || $invoice->is_paid() || $invoice->is_refunded()) {
             exit;
         }
 
         // Abort if the invoice does not have the specified item.
-        $item = $invoice->get_item( (int) $_POST['item_id'] );
+        $item = $invoice->get_item((int) $_POST['item_id']);
 
-        if ( empty( $item ) ) {
+        if (empty($item)) {
             exit;
         }
 
-        $invoice->remove_item( (int) $_POST['item_id'] );
+        $invoice->remove_item((int) $_POST['item_id']);
 
         // Update totals.
         $invoice->recalculate_total();
@@ -711,11 +711,11 @@ 
         // Return an array of invoice items.
         $items = array();
 
-        foreach ( $invoice->get_items() as $item ) {
-            $items[] = $item->prepare_data_for_invoice_edit_ajax(  $invoice->get_currency()  );
+        foreach ($invoice->get_items() as $item) {
+            $items[] = $item->prepare_data_for_invoice_edit_ajax($invoice->get_currency());
         }
 
-        wp_send_json_success( compact( 'items' ) );
+        wp_send_json_success(compact('items'));
     }
 
     /**
@@ -724,69 +724,69 @@ 
     public static function recalculate_full_prices() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             exit;
         }
 
         // We need an invoice and item.
-        if ( empty( $_POST['post_id'] ) ) {
+        if (empty($_POST['post_id'])) {
             exit;
         }
 
         // Fetch the invoice.
-        $invoice = new WPInv_Invoice( wpinv_clean( $_POST['post_id'] ) );
+        $invoice = new WPInv_Invoice(wpinv_clean($_POST['post_id']));
         $alert   = false;
 
         // Ensure it exists and its not been paid for.
-        if ( ! $invoice->get_id() || $invoice->is_paid() || $invoice->is_refunded() ) {
+        if (!$invoice->get_id() || $invoice->is_paid() || $invoice->is_refunded()) {
             exit;
         }
 
-        $invoice->set_items( array() );
+        $invoice->set_items(array());
 
-        if ( ! empty( $_POST['getpaid_items'] ) ) {
+        if (!empty($_POST['getpaid_items'])) {
 
-            foreach ( $_POST['getpaid_items'] as $item_id => $args ) {
-                $item = new GetPaid_Form_Item( $item_id );
+            foreach ($_POST['getpaid_items'] as $item_id => $args) {
+                $item = new GetPaid_Form_Item($item_id);
 
-                if ( $item->exists() ) {
-                    $item->set_price( getpaid_standardize_amount( $args['price'] ) );
-                    $item->set_quantity( floatval( $args['quantity'] ) );
-                    $item->set_name( sanitize_text_field( $args['name'] ) );
-                    $item->set_description( wp_kses_post( $args['description'] ) );
-                    $invoice->add_item( $item );
+                if ($item->exists()) {
+                    $item->set_price(getpaid_standardize_amount($args['price']));
+                    $item->set_quantity(floatval($args['quantity']));
+                    $item->set_name(sanitize_text_field($args['name']));
+                    $item->set_description(wp_kses_post($args['description']));
+                    $invoice->add_item($item);
                 }
             }
 
         }
 
-        $invoice->set_disable_taxes( ! empty( $_POST['disable_taxes'] ) );
+        $invoice->set_disable_taxes(!empty($_POST['disable_taxes']));
 
         // Maybe set the country, state, currency.
-        foreach ( array( 'wpinv_country', 'wpinv_state', 'wpinv_currency', 'wpinv_vat_number', 'wpinv_discount_code' ) as $key ) {
-            if ( isset( $_POST[ $key ] ) ) {
-                $_key   = str_replace( 'wpinv_', '', $key );
+        foreach (array('wpinv_country', 'wpinv_state', 'wpinv_currency', 'wpinv_vat_number', 'wpinv_discount_code') as $key) {
+            if (isset($_POST[$key])) {
+                $_key   = str_replace('wpinv_', '', $key);
                 $method = "set_$_key";
-                $invoice->$method( sanitize_text_field( $_POST[ $key ] ) );
+                $invoice->$method(sanitize_text_field($_POST[$key]));
             }
         }
 
-        $discount = new WPInv_Discount( $invoice->get_discount_code() );
-        if ( $discount->exists() ) {
-            $invoice->add_discount( getpaid_calculate_invoice_discount( $invoice, $discount ) );
+        $discount = new WPInv_Discount($invoice->get_discount_code());
+        if ($discount->exists()) {
+            $invoice->add_discount(getpaid_calculate_invoice_discount($invoice, $discount));
         } else {
-            $invoice->remove_discount( 'discount_code' );
+            $invoice->remove_discount('discount_code');
         }
 
         // Save the invoice.
         $invoice->recalculate_total();
         $invoice->save();
         ob_start();
-        GetPaid_Meta_Box_Invoice_Items::output( get_post( $invoice->get_id() ), $invoice );
+        GetPaid_Meta_Box_Invoice_Items::output(get_post($invoice->get_id()), $invoice);
         $table = ob_get_clean();
-        wp_send_json_success( compact( 'table' ) );
+        wp_send_json_success(compact('table'));
     }
 
     /**
@@ -795,42 +795,42 @@ 
     public static function admin_add_invoice_item() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             exit;
         }
 
         // We need an invoice and item.
-        if ( empty( $_POST['post_id'] ) || empty( $_POST['item_id'] ) ) {
+        if (empty($_POST['post_id']) || empty($_POST['item_id'])) {
             exit;
         }
 
         // Fetch the invoice.
-        $invoice = new WPInv_Invoice( wpinv_clean( $_POST['post_id'] ) );
+        $invoice = new WPInv_Invoice(wpinv_clean($_POST['post_id']));
         $alert   = false;
 
         // Ensure it exists and its not been paid for.
-        if ( ! $invoice->get_id() || $invoice->is_paid() || $invoice->is_refunded() ) {
+        if (!$invoice->get_id() || $invoice->is_paid() || $invoice->is_refunded()) {
             exit;
         }
 
         // Add the item.
-        $item  = new GetPaid_Form_Item( (int) $_POST['item_id'] );
-        $error = $invoice->add_item( $item );
+        $item  = new GetPaid_Form_Item((int) $_POST['item_id']);
+        $error = $invoice->add_item($item);
 
-        if ( is_wp_error( $error ) ) {
+        if (is_wp_error($error)) {
             $alert = $error->get_error_message();
-            wp_send_json_success( compact( 'alert' ) );
+            wp_send_json_success(compact('alert'));
         }
 
         // Save the invoice.
         $invoice->recalculate_total();
         $invoice->save();
         ob_start();
-        GetPaid_Meta_Box_Invoice_Items::output_row( GetPaid_Meta_Box_Invoice_Items::get_columns( $invoice ), $item, $invoice );
+        GetPaid_Meta_Box_Invoice_Items::output_row(GetPaid_Meta_Box_Invoice_Items::get_columns($invoice), $item, $invoice);
         $row = ob_get_clean();
-        wp_send_json_success( compact( 'row' ) );
+        wp_send_json_success(compact('row'));
     }
 
     /**
@@ -839,39 +839,39 @@ 
     public static function add_invoice_items() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             exit;
         }
 
         // We need an invoice and items.
-        if ( empty( $_POST['post_id'] ) || empty( $_POST['items'] ) ) {
+        if (empty($_POST['post_id']) || empty($_POST['items'])) {
             exit;
         }
 
         // Fetch the invoice.
-        $invoice = new WPInv_Invoice( wpinv_clean( $_POST['post_id'] ) );
+        $invoice = new WPInv_Invoice(wpinv_clean($_POST['post_id']));
         $alert   = false;
 
         // Ensure it exists and its not been paid for.
-        if ( ! $invoice->get_id() || $invoice->is_paid() || $invoice->is_refunded() ) {
+        if (!$invoice->get_id() || $invoice->is_paid() || $invoice->is_refunded()) {
             exit;
         }
 
         // Add the items.
-        foreach ( $_POST['items'] as $data ) {
+        foreach ($_POST['items'] as $data) {
 
-            $item = new GetPaid_Form_Item( (int) $data[ 'id' ] );
+            $item = new GetPaid_Form_Item((int) $data['id']);
 
-            if ( is_numeric( $data[ 'qty' ] ) && (float) $data[ 'qty' ] > 0 ) {
-                $item->set_quantity( floatval( $data[ 'qty' ] ) );
+            if (is_numeric($data['qty']) && (float) $data['qty'] > 0) {
+                $item->set_quantity(floatval($data['qty']));
             }
 
-            if ( $item->get_id() > 0 ) {
-                $error = $invoice->add_item( $item );
+            if ($item->get_id() > 0) {
+                $error = $invoice->add_item($item);
 
-                if ( is_wp_error( $error ) ) {
+                if (is_wp_error($error)) {
                     $alert = $error->get_error_message();
                 }
 
@@ -886,11 +886,11 @@ 
         // Return an array of invoice items.
         $items = array();
 
-        foreach ( $invoice->get_items() as $item ) {
-            $items[] = $item->prepare_data_for_invoice_edit_ajax( $invoice->get_currency() );
+        foreach ($invoice->get_items() as $item) {
+            $items[] = $item->prepare_data_for_invoice_edit_ajax($invoice->get_currency());
         }
 
-        wp_send_json_success( compact( 'items', 'alert' ) );
+        wp_send_json_success(compact('items', 'alert'));
     }
 
     /**
@@ -899,15 +899,15 @@ 
     public static function get_invoicing_items() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             exit;
         }
 
         // We need a search term.
-        if ( empty( $_GET['search'] ) ) {
-            wp_send_json_success( array() );
+        if (empty($_GET['search'])) {
+            wp_send_json_success(array());
         }
 
         // Retrieve items.
@@ -916,8 +916,8 @@ 
             'orderby'        => 'title',
             'order'          => 'ASC',
             'posts_per_page' => -1,
-            'post_status'    => array( 'publish' ),
-            's'              => trim( $_GET['search'] ),
+            'post_status'    => array('publish'),
+            's'              => trim($_GET['search']),
             'meta_query'     => array(
                 array(
                     'key'       => '_wpinv_type',
@@ -927,21 +927,21 @@ 
             )
         );
 
-        $items = get_posts( apply_filters( 'getpaid_ajax_invoice_items_query_args', $item_args ) );
+        $items = get_posts(apply_filters('getpaid_ajax_invoice_items_query_args', $item_args));
         $data  = array();
 
-        $is_payment_form = ( ! empty( $_GET['post_id'] ) && 'wpi_payment_form' == get_post_type( $_GET['post_id'] ) );
+        $is_payment_form = (!empty($_GET['post_id']) && 'wpi_payment_form' == get_post_type($_GET['post_id']));
 
-        foreach ( $items as $item ) {
-            $item      = new GetPaid_Form_Item( $item );
+        foreach ($items as $item) {
+            $item = new GetPaid_Form_Item($item);
             $data[] = array(
                 'id'        => (int) $item->get_id(),
-                'text'      => strip_tags( $item->get_name() ),
-                'form_data' => $is_payment_form ? $item->prepare_data_for_use( false ) : '',
+                'text'      => strip_tags($item->get_name()),
+                'form_data' => $is_payment_form ? $item->prepare_data_for_use(false) : '',
             );
         }
 
-        wp_send_json_success( $data );
+        wp_send_json_success($data);
 
     }
 
@@ -951,37 +951,37 @@ 
     public static function get_customers() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
-        if ( ! wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             exit;
         }
 
         // We need a search term.
-        if ( empty( $_GET['search'] ) ) {
-            wp_send_json_success( array() );
+        if (empty($_GET['search'])) {
+            wp_send_json_success(array());
         }
 
         // Retrieve customers.
     
         $customer_args = array(
-            'fields'         => array( 'ID', 'user_email', 'display_name' ),
+            'fields'         => array('ID', 'user_email', 'display_name'),
             'orderby'        => 'display_name',
-            'search'         => '*' . sanitize_text_field( $_GET['search'] ) . '*',
-            'search_columns' => array( 'user_login', 'user_email', 'display_name' ),
+            'search'         => '*' . sanitize_text_field($_GET['search']) . '*',
+            'search_columns' => array('user_login', 'user_email', 'display_name'),
         );
 
-        $customers = get_users( apply_filters( 'getpaid_ajax_invoice_customers_query_args', $customer_args ) );
+        $customers = get_users(apply_filters('getpaid_ajax_invoice_customers_query_args', $customer_args));
         $data      = array();
 
-        foreach ( $customers as $customer ) {
+        foreach ($customers as $customer) {
             $data[] = array(
                 'id'        => (int) $customer->ID,
-                'text'      => strip_tags( sprintf( _x( '%1$s (%2$s)', 'user dropdown', 'invoicing' ), $customer->display_name, $customer->user_email ) ),
+                'text'      => strip_tags(sprintf(_x('%1$s (%2$s)', 'user dropdown', 'invoicing'), $customer->display_name, $customer->user_email)),
             );
         }
 
-        wp_send_json_success( $data );
+        wp_send_json_success($data);
 
     }
 
@@ -991,28 +991,28 @@ 
     public static function get_aui_states_field() {
 
         // Verify nonce.
-        check_ajax_referer( 'wpinv-nonce' );
+        check_ajax_referer('wpinv-nonce');
 
         // We need a country.
-        if ( empty( $_GET['country'] ) ) {
+        if (empty($_GET['country'])) {
             exit;
         }
 
-        $states = wpinv_get_country_states( sanitize_text_field( $_GET['country'] ) );
-        $state  = isset( $_GET['state'] ) ? sanitize_text_field( $_GET['state'] ) : wpinv_get_default_state();
-        $name   = isset( $_GET['name'] ) ? sanitize_text_field( $_GET['name'] ) : 'wpinv_state';
-        $class  = isset( $_GET['class'] ) ? sanitize_text_field( $_GET['class'] ) : 'form-control-sm';
+        $states = wpinv_get_country_states(sanitize_text_field($_GET['country']));
+        $state  = isset($_GET['state']) ? sanitize_text_field($_GET['state']) : wpinv_get_default_state();
+        $name   = isset($_GET['name']) ? sanitize_text_field($_GET['name']) : 'wpinv_state';
+        $class  = isset($_GET['class']) ? sanitize_text_field($_GET['class']) : 'form-control-sm';
 
-        if ( empty( $states ) ) {
+        if (empty($states)) {
 
             $html = aui()->input(
                 array(
                     'type'        => 'text',
                     'id'          => 'wpinv_state',
                     'name'        => $name,
-                    'label'       => __( 'State', 'invoicing' ),
+                    'label'       => __('State', 'invoicing'),
                     'label_type'  => 'vertical',
-                    'placeholder' => __( 'State', 'invoicing' ),
+                    'placeholder' => __('State', 'invoicing'),
                     'class'       => $class,
                     'value'       => $state,
                 )
@@ -1024,9 +1024,9 @@ 
                 array(
                     'id'          => 'wpinv_state',
                     'name'        => $name,
-                    'label'       => __( 'State', 'invoicing' ),
+                    'label'       => __('State', 'invoicing'),
                     'label_type'  => 'vertical',
-                    'placeholder' => __( 'Select a state', 'invoicing' ),
+                    'placeholder' => __('Select a state', 'invoicing'),
                     'class'       => $class,
                     'value'       => $state,
                     'options'     => $states,
@@ -1040,7 +1040,7 @@ 
         wp_send_json_success(
             array(
                 'html'   => $html,
-                'select' => ! empty ( $states )
+                'select' => !empty ($states)
             )
         );
 
@@ -1054,11 +1054,11 @@ 
     public static function payment_form_refresh_prices() {
 
         // Check nonce.
-        check_ajax_referer( 'getpaid_form_nonce' );
+        check_ajax_referer('getpaid_form_nonce');
 
         // ... form fields...
-        if ( empty( $_POST['getpaid_payment_form_submission'] ) ) {
-            _e( 'Error: Reload the page and try again.', 'invoicing' );
+        if (empty($_POST['getpaid_payment_form_submission'])) {
+            _e('Error: Reload the page and try again.', 'invoicing');
             exit;
         }
 
@@ -1066,7 +1066,7 @@ 
         $submission = new GetPaid_Payment_Form_Submission();
 
         // Do we have an error?
-        if ( ! empty( $submission->last_error ) ) {
+        if (!empty($submission->last_error)) {
             wp_send_json_error(
                 array(
                     'code'  => $submission->last_error_code,
@@ -1076,12 +1076,12 @@ 
         }
 
         // Prepare the response.
-        $response = new GetPaid_Payment_Form_Submission_Refresh_Prices( $submission );
+        $response = new GetPaid_Payment_Form_Submission_Refresh_Prices($submission);
 
         // Filter the response.
-        $response = apply_filters( 'getpaid_payment_form_ajax_refresh_prices', $response->response, $submission );
+        $response = apply_filters('getpaid_payment_form_ajax_refresh_prices', $response->response, $submission);
 
-        wp_send_json_success( $response );
+        wp_send_json_success($response);
     }
 
     /**
@@ -1093,63 +1093,63 @@ 
 	public static function file_upload() {
 
         // Check nonce.
-        check_ajax_referer( 'getpaid_form_nonce' );
+        check_ajax_referer('getpaid_form_nonce');
 
-        if ( empty( $_POST['form_id'] ) || empty( $_POST['field_name'] ) || empty( $_FILES['file'] ) ) {
-            wp_die( __( 'Bad Request', 'invoicing' ), 400 );
+        if (empty($_POST['form_id']) || empty($_POST['field_name']) || empty($_FILES['file'])) {
+            wp_die(__('Bad Request', 'invoicing'), 400);
         }
 
         // Fetch form.
-        $form = new GetPaid_Payment_Form( intval( $_POST['form_id'] ) );
+        $form = new GetPaid_Payment_Form(intval($_POST['form_id']));
 
-        if ( ! $form->is_active() ) {
-            wp_send_json_error( __( 'Payment form not active', 'invoicing' ) );
+        if (!$form->is_active()) {
+            wp_send_json_error(__('Payment form not active', 'invoicing'));
         }
 
         // Fetch appropriate field.
-        $upload_field = current( wp_list_filter( $form->get_elements(), array( 'id' => sanitize_text_field( $_POST['field_name'] ) ) ) );
-        if ( empty( $upload_field ) ) {
-            wp_send_json_error( __( 'Invalid upload field.', 'invoicing' ) );
+        $upload_field = current(wp_list_filter($form->get_elements(), array('id' => sanitize_text_field($_POST['field_name']))));
+        if (empty($upload_field)) {
+            wp_send_json_error(__('Invalid upload field.', 'invoicing'));
         }
 
         // Prepare allowed file types.
-        $file_types = isset( $upload_field['file_types'] ) ? $upload_field['file_types'] : array( 'jpg|jpeg|jpe', 'gif', 'png' );
+        $file_types = isset($upload_field['file_types']) ? $upload_field['file_types'] : array('jpg|jpeg|jpe', 'gif', 'png');
         $all_types  = getpaid_get_allowed_mime_types();
         $mime_types = array();
 
-        foreach ( $file_types as $file_type ) {
-            if ( isset( $all_types[ $file_type ] ) ) {
-                $mime_types[] = $all_types[ $file_type ];
+        foreach ($file_types as $file_type) {
+            if (isset($all_types[$file_type])) {
+                $mime_types[] = $all_types[$file_type];
             }
         }
 
-        if ( ! in_array( $_FILES['file']['type'], $mime_types ) ) {
-            wp_send_json_error( __( 'Unsupported file type.', 'invoicing' ) );
+        if (!in_array($_FILES['file']['type'], $mime_types)) {
+            wp_send_json_error(__('Unsupported file type.', 'invoicing'));
         }
 
         // Upload file.
-        $file_name = explode( '.', strtolower( $_FILES['file']['name'] ) );
-        $file_name = uniqid( 'getpaid-' ) . '.' . array_pop( $file_name );
+        $file_name = explode('.', strtolower($_FILES['file']['name']));
+        $file_name = uniqid('getpaid-') . '.' . array_pop($file_name);
 
         $uploaded = wp_upload_bits(
             $file_name,
             null,
-            file_get_contents( $_FILES["file"]["tmp_name"] )
+            file_get_contents($_FILES["file"]["tmp_name"])
         );
 
-        if ( ! empty( $uploaded['error'] ) ) {
-            wp_send_json_error( $uploaded['error'] );
+        if (!empty($uploaded['error'])) {
+            wp_send_json_error($uploaded['error']);
         }
 
         // Retrieve response.
         $response = sprintf(
             '<input type="hidden" name="%s[%s]" value="%s" />',
-            esc_attr( $_POST['field_name'] ),
-            esc_attr( $uploaded['url'] ),
-            esc_attr( strtolower( $_FILES['file']['name'] ) )
+            esc_attr($_POST['field_name']),
+            esc_attr($uploaded['url']),
+            esc_attr(strtolower($_FILES['file']['name']))
         );
 
-        wp_send_json_success( $response );
+        wp_send_json_success($response);
 
 	}
 

includes/admin/meta-boxes/class-mb-payment-form.php

Spacing +13 added lines, -13 removed lines

@@ -1,7 +1,7 @@ 
 <?php
 // MUST have WordPress.
-if ( !defined( 'WPINC' ) ) {
-    exit( 'Do NOT access this file directly: ' . basename( __FILE__ ) );
+if (!defined('WPINC')) {
+    exit('Do NOT access this file directly: ' . basename(__FILE__));
 }
 
 class WPInv_Meta_Box_Payment_Form {
@@ -11,23 +11,23 @@ 
      *
      * @param WP_Post $post
      */
-    public static function output_details( $post ) {
-        $details = get_post_meta( $post->ID, 'payment_form_data', true );
+    public static function output_details($post) {
+        $details = get_post_meta($post->ID, 'payment_form_data', true);
 
-        if ( ! is_array( $details ) ) {
+        if (!is_array($details)) {
             return;
         }
 
         echo '<div class="bsui"> <div class="form-row">';
 
-        foreach ( $details as $key => $value ) {
-            $key = esc_html( $key );
+        foreach ($details as $key => $value) {
+            $key = esc_html($key);
 
-            if ( is_array( $value ) ) {
-                $value = implode( ',', $value );
+            if (is_array($value)) {
+                $value = implode(',', $value);
             }
 
-            $value = wp_kses_post( $value );
+            $value = wp_kses_post($value);
             echo "<div class='col-12'><strong>$key:</strong></div><div class='col-12 form-group'>$value</div>";
         }
 
@@ -40,13 +40,13 @@ 
      *
      * @param WP_Post $post
      */
-    public static function output_shortcode( $post ) {
+    public static function output_shortcode($post) {
 
-        if ( ! is_numeric( $post ) ) {
+        if (!is_numeric($post)) {
             $post = $post->ID;
         }
 
-        if ( $post == wpinv_get_default_payment_form() ) {
+        if ($post == wpinv_get_default_payment_form()) {
             echo '&mdash;';
             return;
         }

includes/admin/meta-boxes/class-getpaid-meta-box-payment-form.php

Spacing +29 added lines, -29 removed lines

@@ -6,7 +6,7 @@ 
  *
  */
 
-if ( ! defined( 'ABSPATH' ) ) {
+if (!defined('ABSPATH')) {
 	exit; // Exit if accessed directly
 }
 
@@ -20,7 +20,7 @@ 
 	 *
 	 * @param WP_Post $post
 	 */
-    public static function output( $post ) {
+    public static function output($post) {
         ?>
         <style>
             .wpinv-form-builder-edit-field-wrapper label.d-block > span:first-child{
@@ -33,7 +33,7 @@ 
                 <div class="col-sm-4">
 
                     <!-- Builder tabs -->
-                    <button class="button button-primary" v-if="active_tab!='new_item'" @click.prevent="active_tab='new_item'"><?php _e( 'Go Back', 'invoicing' ); ?></button>
+                    <button class="button button-primary" v-if="active_tab!='new_item'" @click.prevent="active_tab='new_item'"><?php _e('Go Back', 'invoicing'); ?></button>
 
                     <!-- Builder tab content -->
                     <div class="mt-4">
@@ -41,7 +41,7 @@ 
                         <!-- Available builder elements -->
                         <div class="wpinv-form-builder-tab-pane" v-if="active_tab=='new_item'">
                             <div class="wpinv-form-builder-add-field-types">
-                                <small class='form-text text-muted'><?php _e( 'Add an element by dragging it to the payment form.', 'invoicing' ); ?></small>
+                                <small class='form-text text-muted'><?php _e('Add an element by dragging it to the payment form.', 'invoicing'); ?></small>
                                 <draggable class="section mt-2" style="display: flex; flex-flow: wrap; justify-content: space-between;" v-model="elements" :group="{ name: 'fields', pull: 'clone', put: false }" :sort="false" :clone="addDraggedField" tag="ul" filter=".wpinv-undraggable">
                                     <li v-for="element in elements" class= "wpinv-payment-form-left-fields-field" @click.prevent="addField(element)" :class="{ 'd-none': element.defaults.premade }">
                                         <button class="button btn text-dark">
@@ -56,18 +56,18 @@ 
                         <!-- Edit an element -->
                         <div class="wpinv-form-builder-tab-pane" v-if="active_tab=='edit_item'" style="font-size: 14px;">
                             <div class="wpinv-form-builder-edit-field-wrapper">
-                                <?php do_action( 'wpinv_payment_form_edit_element_template', 'active_form_element', $post ); ?>
-                                <?php do_action( 'getpaid_payment_form_edit_element_template', $post ); ?>
+                                <?php do_action('wpinv_payment_form_edit_element_template', 'active_form_element', $post); ?>
+                                <?php do_action('getpaid_payment_form_edit_element_template', $post); ?>
                                 <div class='form-group'>
-                                    <label :for="active_form_element.id + '_grid_width'"><?php esc_html_e( 'Width', 'invoicing' ) ?></label>
+                                    <label :for="active_form_element.id + '_grid_width'"><?php esc_html_e('Width', 'invoicing') ?></label>
                                     <select class='form-control custom-select' :id="active_form_element.id + '_grid_width'" v-model='gridWidth'>
-                                        <option value='full'><?php esc_html_e( 'Full Width', 'invoicing' ); ?></option>
-                                        <option value='half'><?php esc_html_e( 'Half Width', 'invoicing' ); ?></option>
-                                        <option value='third'><?php esc_html_e( '1/3 Width', 'invoicing' ); ?></option>
+                                        <option value='full'><?php esc_html_e('Full Width', 'invoicing'); ?></option>
+                                        <option value='half'><?php esc_html_e('Half Width', 'invoicing'); ?></option>
+                                        <option value='third'><?php esc_html_e('1/3 Width', 'invoicing'); ?></option>
                                     </select>
                                 </div>
                                 <div>
-                                    <button type="button" class="button button-link button-link-delete" @click.prevent="removeField(active_form_element)" v-show="! active_form_element.premade"><?php _e( 'Delete Element', 'invoicing' ); ?></button>
+                                    <button type="button" class="button button-link button-link-delete" @click.prevent="removeField(active_form_element)" v-show="! active_form_element.premade"><?php _e('Delete Element', 'invoicing'); ?></button>
                                 </div>
                             </div>
                         </div>
@@ -76,15 +76,15 @@ 
 
                 </div>
                 <div class="col-sm-8 border-left">
-                    <small class='form-text text-muted' v-if='form_elements.length'><?php _e( 'Click on any element to edit or delete it.', 'invoicing' ); ?></small>
-                    <p class='form-text text-muted' v-if='! form_elements.length'><?php _e( 'This form is empty. Add new elements by dragging them from the right.', 'invoicing' ); ?></p>
+                    <small class='form-text text-muted' v-if='form_elements.length'><?php _e('Click on any element to edit or delete it.', 'invoicing'); ?></small>
+                    <p class='form-text text-muted' v-if='! form_elements.length'><?php _e('This form is empty. Add new elements by dragging them from the right.', 'invoicing'); ?></p>
 
                     <div class="container-fluid">
                         <draggable class="section row" v-model="form_elements" @add="highlightLastDroppedField" group="fields" tag="div" style="min-height: 100%; font-size: 14px;">
                             <div v-for="form_element in form_elements" class="wpinv-form-builder-element-preview" :class="[{ active: active_form_element==form_element &&  active_tab=='edit_item' }, form_element.type, grid_class( form_element ) ]" @click="active_tab = 'edit_item'; active_form_element = form_element">
                                 <div class="wpinv-form-builder-element-preview-inner">
                                     <div class="wpinv-payment-form-field-preview-overlay"></div>
-                                    <?php do_action( 'wpinv_payment_form_render_element_template', 'form_element', $post ); ?>
+                                    <?php do_action('wpinv_payment_form_render_element_template', 'form_element', $post); ?>
                                 </div>
                             </div>
                         </draggable>
@@ -103,7 +103,7 @@ 
         </script>
         <?php
 
-        wp_nonce_field( 'getpaid_meta_nonce', 'getpaid_meta_nonce' );
+        wp_nonce_field('getpaid_meta_nonce', 'getpaid_meta_nonce');
     }
 
     /**
@@ -111,33 +111,33 @@ 
 	 *
 	 * @param int $post_id
 	 */
-	public static function save( $post_id ) {
+	public static function save($post_id) {
 
         // Prepare the form.
-        $form = new GetPaid_Payment_Form( $post_id );
+        $form = new GetPaid_Payment_Form($post_id);
 
         // Fetch form items.
-        $form_items = json_decode( wp_unslash( $_POST['wpinv_form_items'] ), true );
+        $form_items = json_decode(wp_unslash($_POST['wpinv_form_items']), true);
 
         // Ensure that we have an array...
-        if ( empty( $form_items ) ) {
+        if (empty($form_items)) {
             $form_items = array();
         }
 
         // Add it to the form.
-        $form->set_items( self::item_to_objects( wp_kses_post_deep( $form_items ) ) );
+        $form->set_items(self::item_to_objects(wp_kses_post_deep($form_items)));
 
         // Save form elements.
-        $form_elements = json_decode( wp_unslash( $_POST['wpinv_form_elements'] ), true );
-        if ( empty( $form_elements ) ) {
+        $form_elements = json_decode(wp_unslash($_POST['wpinv_form_elements']), true);
+        if (empty($form_elements)) {
             $form_elements = array();
         }
 
-        $form->set_elements( wp_kses_post_deep( $form_elements ) );
+        $form->set_elements(wp_kses_post_deep($form_elements));
 
         // Persist data to the datastore.
         $form->save();
-        do_action( 'getpaid_payment_form_metabox_save', $post_id, $form );
+        do_action('getpaid_payment_form_metabox_save', $post_id, $form);
 
     }
 
@@ -146,14 +146,14 @@ 
 	 *
 	 * @param array $items
 	 */
-	public static function item_to_objects( $items ) {
+	public static function item_to_objects($items) {
 
         $objects = array();
 
-        foreach ( $items as $item ) {
-            $_item = new GetPaid_Form_Item( $item['id'] );
-            $_item->set_allow_quantities( (bool) $item['allow_quantities'] );
-            $_item->set_is_required( (bool) $item['required'] );
+        foreach ($items as $item) {
+            $_item = new GetPaid_Form_Item($item['id']);
+            $_item->set_allow_quantities((bool) $item['allow_quantities']);
+            $_item->set_is_required((bool) $item['required']);
             $objects[] = $_item;
         }
 

templates/payment-forms/embed.php

Spacing +12 added lines, -12 removed lines

@@ -1,29 +1,29 @@ 
 <?php
 
 	// Is the request set up correctly?
-	if ( empty( $_GET['form'] ) && empty( $_GET['item'] ) ) {
+	if (empty($_GET['form']) && empty($_GET['item'])) {
 		return aui()->alert(
 			array(
 				'type'    => 'warning',
-				'content' => __( 'No payment form or item selected', 'invoicing' ),
+				'content' => __('No payment form or item selected', 'invoicing'),
 			)
 		);
-		wp_die( __( 'No payment form or item selected', 'invoicing' ), 400 );
+		wp_die(__('No payment form or item selected', 'invoicing'), 400);
 	}
 
 	// Payment form or button?
-	if ( ! empty( $_GET['form'] ) ) {
+	if (!empty($_GET['form'])) {
 
 		$shortcode = sprintf(
 			'[getpaid form=%s]',
-			(int) urldecode( $_GET['form'] )
+			(int) urldecode($_GET['form'])
 		);
 
 	} else {
 
 		$shortcode = sprintf(
 			'[getpaid item=%s]',
-			esc_attr( urldecode( $_GET['item'] ) )
+			esc_attr(urldecode($_GET['item']))
 		);
 
 	}
@@ -35,7 +35,7 @@ 
 
 	<head>
 
-		<meta charset="<?php bloginfo( 'charset' ); ?>">
+		<meta charset="<?php bloginfo('charset'); ?>">
         <meta name="viewport" content="width=device-width, initial-scale=1.0" >
 
         <meta name="robots" content="noindex,nofollow">
@@ -48,7 +48,7 @@ 
 			wp_print_styles();
 			wp_print_head_scripts();
 			wp_custom_css_cb();
-			wpinv_get_template( 'frontend-head.php' );
+			wpinv_get_template('frontend-head.php');
 		?>
 
 		<style type="text/css">
@@ -83,10 +83,10 @@ 
 	<body class="body page-template-default page">
 		<div id="getpaid-form-embed" class="container my-5 page type-page status-publish hentry post post-content">
 			<?php
-				do_action( 'getpaid_payment_form_embed_top' );
-				echo do_shortcode( $shortcode );
-				do_action( 'getpaid_payment_form_embed_bottom' );
-				wpinv_get_template( 'frontend-footer.php' );
+				do_action('getpaid_payment_form_embed_top');
+				echo do_shortcode($shortcode);
+				do_action('getpaid_payment_form_embed_bottom');
+				wpinv_get_template('frontend-footer.php');
 			?>
 		</div>
 		<?php wp_footer(); ?>

includes/wpinv-template-functions.php

Spacing +462 added lines, -462 removed lines

@@ -4,99 +4,99 @@ 
  *
  */
 
-defined( 'ABSPATH' ) || exit;
+defined('ABSPATH') || exit;
 
 /**
  * Displays an invoice.
  * 
  * @param WPInv_Invoice $invoice.
  */
-function getpaid_invoice( $invoice ) {
-    if ( ! empty( $invoice ) ) {
-        wpinv_get_template( 'invoice/invoice.php', compact( 'invoice' ) );
+function getpaid_invoice($invoice) {
+    if (!empty($invoice)) {
+        wpinv_get_template('invoice/invoice.php', compact('invoice'));
     }
 }
-add_action( 'getpaid_invoice', 'getpaid_invoice', 10 );
+add_action('getpaid_invoice', 'getpaid_invoice', 10);
 
 /**
  * Displays the invoice footer.
  */
-function getpaid_invoice_footer( $invoice ) {
-    if ( ! empty( $invoice ) ) {
-        wpinv_get_template( 'invoice/footer.php', compact( 'invoice' ) );
+function getpaid_invoice_footer($invoice) {
+    if (!empty($invoice)) {
+        wpinv_get_template('invoice/footer.php', compact('invoice'));
     }
 }
-add_action( 'getpaid_invoice_footer', 'getpaid_invoice_footer', 10 );
+add_action('getpaid_invoice_footer', 'getpaid_invoice_footer', 10);
 
 /**
  * Displays the invoice top bar.
  */
-function getpaid_invoice_header( $invoice ) {
-    if ( ! empty( $invoice ) ) {
-        wpinv_get_template( 'invoice/header.php', compact( 'invoice' ) );
+function getpaid_invoice_header($invoice) {
+    if (!empty($invoice)) {
+        wpinv_get_template('invoice/header.php', compact('invoice'));
     }
 }
-add_action( 'getpaid_invoice_header', 'getpaid_invoice_header', 10 );
+add_action('getpaid_invoice_header', 'getpaid_invoice_header', 10);
 
 /**
  * Displays actions on the left side of the header.
  */
-function getpaid_invoice_header_left_actions( $invoice ) {
-    if ( ! empty( $invoice ) ) {
-        wpinv_get_template( 'invoice/header-left-actions.php', compact( 'invoice' ) );
+function getpaid_invoice_header_left_actions($invoice) {
+    if (!empty($invoice)) {
+        wpinv_get_template('invoice/header-left-actions.php', compact('invoice'));
     }
 }
-add_action( 'getpaid_invoice_header_left', 'getpaid_invoice_header_left_actions', 10 );
+add_action('getpaid_invoice_header_left', 'getpaid_invoice_header_left_actions', 10);
 
 /**
  * Displays actions on the right side of the invoice top bar.
  */
-function getpaid_invoice_header_right_actions( $invoice ) {
-    if ( ! empty( $invoice ) ) {
-        wpinv_get_template( 'invoice/header-right-actions.php', compact( 'invoice' ) );
+function getpaid_invoice_header_right_actions($invoice) {
+    if (!empty($invoice)) {
+        wpinv_get_template('invoice/header-right-actions.php', compact('invoice'));
     }
 }
-add_action( 'getpaid_invoice_header_right', 'getpaid_invoice_header_right_actions', 10 );
+add_action('getpaid_invoice_header_right', 'getpaid_invoice_header_right_actions', 10);
 
 /**
  * Displays the invoice title, logo etc.
  */
-function getpaid_invoice_details_top( $invoice ) {
-    if ( ! empty( $invoice ) ) {
-        wpinv_get_template( 'invoice/details-top.php', compact( 'invoice' ) );
+function getpaid_invoice_details_top($invoice) {
+    if (!empty($invoice)) {
+        wpinv_get_template('invoice/details-top.php', compact('invoice'));
     }
 }
-add_action( 'getpaid_invoice_details', 'getpaid_invoice_details_top', 10 );
+add_action('getpaid_invoice_details', 'getpaid_invoice_details_top', 10);
 
 /**
  * Displays the company logo.
  */
-function getpaid_invoice_logo( $invoice ) {
-    if ( ! empty( $invoice ) ) {
-        wpinv_get_template( 'invoice/invoice-logo.php', compact( 'invoice' ) );
+function getpaid_invoice_logo($invoice) {
+    if (!empty($invoice)) {
+        wpinv_get_template('invoice/invoice-logo.php', compact('invoice'));
     }
 }
-add_action( 'getpaid_invoice_details_top_left', 'getpaid_invoice_logo' );
+add_action('getpaid_invoice_details_top_left', 'getpaid_invoice_logo');
 
 /**
  * Displays the type of invoice.
  */
-function getpaid_invoice_type( $invoice ) {
-    if ( ! empty( $invoice ) ) {
-        wpinv_get_template( 'invoice/invoice-type.php', compact( 'invoice' ) );
+function getpaid_invoice_type($invoice) {
+    if (!empty($invoice)) {
+        wpinv_get_template('invoice/invoice-type.php', compact('invoice'));
     }
 }
-add_action( 'getpaid_invoice_details_top_right', 'getpaid_invoice_type' );
+add_action('getpaid_invoice_details_top_right', 'getpaid_invoice_type');
 
 /**
  * Displays the invoice details.
  */
-function getpaid_invoice_details_main( $invoice ) {
-    if ( ! empty( $invoice ) ) {
-        wpinv_get_template( 'invoice/details.php', compact( 'invoice' ) );
+function getpaid_invoice_details_main($invoice) {
+    if (!empty($invoice)) {
+        wpinv_get_template('invoice/details.php', compact('invoice'));
     }
 }
-add_action( 'getpaid_invoice_details', 'getpaid_invoice_details_main', 50 );
+add_action('getpaid_invoice_details', 'getpaid_invoice_details_main', 50);
 
 /**
  * Returns a path to the templates directory.
@@ -125,8 +125,8 @@ 
  * @param string $template_path The templates directory relative to the theme's root dir. Defaults to 'invoicing'.
  * @param string $default_path The root path to the default template. Defaults to invoicing/templates
  */
-function wpinv_get_template( $template_name, $args = array(), $template_path = '', $default_path = '' ) {
-    getpaid_template()->display_template( $template_name, $args, $template_path, $default_path );
+function wpinv_get_template($template_name, $args = array(), $template_path = '', $default_path = '') {
+    getpaid_template()->display_template($template_name, $args, $template_path, $default_path);
 }
 
 /**
@@ -139,8 +139,8 @@ 
  * @param string $template_path The templates directory relative to the theme's root dir. Defaults to 'invoicing'.
  * @param string $default_path The root path to the default template. Defaults to invoicing/templates
  */
-function wpinv_get_template_html( $template_name, $args = array(), $template_path = '', $default_path = '' ) {
-	return getpaid_template()->get_template( $template_name, $args, $template_path, $default_path );
+function wpinv_get_template_html($template_name, $args = array(), $template_path = '', $default_path = '') {
+	return getpaid_template()->get_template($template_name, $args, $template_path, $default_path);
 }
 
 /**
@@ -149,7 +149,7 @@ 
  * @return string
  */
 function wpinv_template_path() {
-    return apply_filters( 'wpinv_template_path', wpinv_get_theme_template_dir_name() );
+    return apply_filters('wpinv_template_path', wpinv_get_theme_template_dir_name());
 }
 
 /**
@@ -158,7 +158,7 @@ 
  * @return string
  */
 function wpinv_get_theme_template_dir_name() {
-	return trailingslashit( apply_filters( 'wpinv_templates_dir', 'invoicing' ) );
+	return trailingslashit(apply_filters('wpinv_templates_dir', 'invoicing'));
 }
 
 /**
@@ -170,56 +170,56 @@ 
  * @param string $template_path The template path relative to the theme's root dir. Defaults to 'invoicing'.
  * @param string $default_path The root path to the default template. Defaults to invoicing/templates
  */
-function wpinv_locate_template( $template_name, $template_path = '', $default_path = '' ) {
-    return getpaid_template()->locate_template( $template_name, $template_path, $default_path );
+function wpinv_locate_template($template_name, $template_path = '', $default_path = '') {
+    return getpaid_template()->locate_template($template_name, $template_path, $default_path);
 }
 
-function wpinv_get_template_part( $slug, $name = null, $load = true ) {
-	do_action( 'get_template_part_' . $slug, $slug, $name );
+function wpinv_get_template_part($slug, $name = null, $load = true) {
+	do_action('get_template_part_' . $slug, $slug, $name);
 
 	// Setup possible parts
 	$templates = array();
-	if ( isset( $name ) )
+	if (isset($name))
 		$templates[] = $slug . '-' . $name . '.php';
 	$templates[] = $slug . '.php';
 
 	// Allow template parts to be filtered
-	$templates = apply_filters( 'wpinv_get_template_part', $templates, $slug, $name );
+	$templates = apply_filters('wpinv_get_template_part', $templates, $slug, $name);
 
 	// Return the part that is found
-	return wpinv_locate_tmpl( $templates, $load, false );
+	return wpinv_locate_tmpl($templates, $load, false);
 }
 
-function wpinv_locate_tmpl( $template_names, $load = false, $require_once = true ) {
+function wpinv_locate_tmpl($template_names, $load = false, $require_once = true) {
 	// No file found yet
 	$located = false;
 
 	// Try to find a template file
-	foreach ( (array)$template_names as $template_name ) {
+	foreach ((array) $template_names as $template_name) {
 
 		// Continue if template is empty
-		if ( empty( $template_name ) )
+		if (empty($template_name))
 			continue;
 
 		// Trim off any slashes from the template name
-		$template_name = ltrim( $template_name, '/' );
+		$template_name = ltrim($template_name, '/');
 
 		// try locating this template file by looping through the template paths
-		foreach( wpinv_get_theme_template_paths() as $template_path ) {
+		foreach (wpinv_get_theme_template_paths() as $template_path) {
 
-			if( file_exists( $template_path . $template_name ) ) {
+			if (file_exists($template_path . $template_name)) {
 				$located = $template_path . $template_name;
 				break;
 			}
 		}
 
-		if( !empty( $located ) ) {
+		if (!empty($located)) {
 			break;
 		}
 	}
 
-	if ( ( true == $load ) && ! empty( $located ) )
-		load_template( $located, $require_once );
+	if ((true == $load) && !empty($located))
+		load_template($located, $require_once);
 
 	return $located;
 }
@@ -228,127 +228,127 @@ 
 	$template_dir = wpinv_get_theme_template_dir_name();
 
 	$file_paths = array(
-		1 => trailingslashit( get_stylesheet_directory() ) . $template_dir,
-		10 => trailingslashit( get_template_directory() ) . $template_dir,
+		1 => trailingslashit(get_stylesheet_directory()) . $template_dir,
+		10 => trailingslashit(get_template_directory()) . $template_dir,
 		100 => wpinv_get_templates_dir()
 	);
 
-	$file_paths = apply_filters( 'wpinv_template_paths', $file_paths );
+	$file_paths = apply_filters('wpinv_template_paths', $file_paths);
 
 	// sort the file paths based on priority
-	ksort( $file_paths, SORT_NUMERIC );
+	ksort($file_paths, SORT_NUMERIC);
 
-	return array_map( 'trailingslashit', $file_paths );
+	return array_map('trailingslashit', $file_paths);
 }
 
 function wpinv_checkout_meta_tags() {
 
 	$pages   = array();
-	$pages[] = wpinv_get_option( 'success_page' );
-	$pages[] = wpinv_get_option( 'failure_page' );
-	$pages[] = wpinv_get_option( 'invoice_history_page' );
-	$pages[] = wpinv_get_option( 'invoice_subscription_page' );
+	$pages[] = wpinv_get_option('success_page');
+	$pages[] = wpinv_get_option('failure_page');
+	$pages[] = wpinv_get_option('invoice_history_page');
+	$pages[] = wpinv_get_option('invoice_subscription_page');
 
-	if( !wpinv_is_checkout() && !is_page( $pages ) ) {
+	if (!wpinv_is_checkout() && !is_page($pages)) {
 		return;
 	}
 
 	echo '<meta name="robots" content="noindex,nofollow" />' . "\n";
 }
-add_action( 'wp_head', 'wpinv_checkout_meta_tags' );
+add_action('wp_head', 'wpinv_checkout_meta_tags');
 
-function wpinv_add_body_classes( $class ) {
-	$classes = (array)$class;
+function wpinv_add_body_classes($class) {
+	$classes = (array) $class;
 
-	if( wpinv_is_checkout() ) {
+	if (wpinv_is_checkout()) {
 		$classes[] = 'wpinv-checkout';
 		$classes[] = 'wpinv-page';
 	}
 
-	if( wpinv_is_success_page() ) {
+	if (wpinv_is_success_page()) {
 		$classes[] = 'wpinv-success';
 		$classes[] = 'wpinv-page';
 	}
 
-	if( wpinv_is_failed_transaction_page() ) {
+	if (wpinv_is_failed_transaction_page()) {
 		$classes[] = 'wpinv-failed-transaction';
 		$classes[] = 'wpinv-page';
 	}
 
-	if( wpinv_is_invoice_history_page() ) {
+	if (wpinv_is_invoice_history_page()) {
 		$classes[] = 'wpinv-history';
 		$classes[] = 'wpinv-page';
 	}
 
-	if( wpinv_is_subscriptions_history_page() ) {
+	if (wpinv_is_subscriptions_history_page()) {
 		$classes[] = 'wpinv-subscription';
 		$classes[] = 'wpinv-page';
 	}
 
-	if( wpinv_is_test_mode() ) {
+	if (wpinv_is_test_mode()) {
 		$classes[] = 'wpinv-test-mode';
 		$classes[] = 'wpinv-page';
 	}
 
-	return array_unique( $classes );
+	return array_unique($classes);
 }
-add_filter( 'body_class', 'wpinv_add_body_classes' );
+add_filter('body_class', 'wpinv_add_body_classes');
 
-function wpinv_html_year_dropdown( $name = 'year', $selected = 0, $years_before = 5, $years_after = 0 ) {
-    $current     = date( 'Y' );
-    $start_year  = $current - absint( $years_before );
-    $end_year    = $current + absint( $years_after );
-    $selected    = empty( $selected ) ? date( 'Y' ) : $selected;
+function wpinv_html_year_dropdown($name = 'year', $selected = 0, $years_before = 5, $years_after = 0) {
+    $current     = date('Y');
+    $start_year  = $current - absint($years_before);
+    $end_year    = $current + absint($years_after);
+    $selected    = empty($selected) ? date('Y') : $selected;
     $options     = array();
 
-    while ( $start_year <= $end_year ) {
-        $options[ absint( $start_year ) ] = $start_year;
+    while ($start_year <= $end_year) {
+        $options[absint($start_year)] = $start_year;
         $start_year++;
     }
 
-    $output = wpinv_html_select( array(
+    $output = wpinv_html_select(array(
         'name'             => $name,
         'selected'         => $selected,
         'options'          => $options,
         'show_option_all'  => false,
         'show_option_none' => false
-    ) );
+    ));
 
     return $output;
 }
 
-function wpinv_html_month_dropdown( $name = 'month', $selected = 0 ) {
+function wpinv_html_month_dropdown($name = 'month', $selected = 0) {
 
     $options = array(
-        '1'  => __( 'January', 'invoicing' ),
-        '2'  => __( 'February', 'invoicing' ),
-        '3'  => __( 'March', 'invoicing' ),
-        '4'  => __( 'April', 'invoicing' ),
-        '5'  => __( 'May', 'invoicing' ),
-        '6'  => __( 'June', 'invoicing' ),
-        '7'  => __( 'July', 'invoicing' ),
-        '8'  => __( 'August', 'invoicing' ),
-        '9'  => __( 'September', 'invoicing' ),
-        '10' => __( 'October', 'invoicing' ),
-        '11' => __( 'November', 'invoicing' ),
-        '12' => __( 'December', 'invoicing' ),
+        '1'  => __('January', 'invoicing'),
+        '2'  => __('February', 'invoicing'),
+        '3'  => __('March', 'invoicing'),
+        '4'  => __('April', 'invoicing'),
+        '5'  => __('May', 'invoicing'),
+        '6'  => __('June', 'invoicing'),
+        '7'  => __('July', 'invoicing'),
+        '8'  => __('August', 'invoicing'),
+        '9'  => __('September', 'invoicing'),
+        '10' => __('October', 'invoicing'),
+        '11' => __('November', 'invoicing'),
+        '12' => __('December', 'invoicing'),
     );
 
     // If no month is selected, default to the current month
-    $selected = empty( $selected ) ? date( 'n' ) : $selected;
+    $selected = empty($selected) ? date('n') : $selected;
 
-    $output = wpinv_html_select( array(
+    $output = wpinv_html_select(array(
         'name'             => $name,
         'selected'         => $selected,
         'options'          => $options,
         'show_option_all'  => false,
         'show_option_none' => false
-    ) );
+    ));
 
     return $output;
 }
 
-function wpinv_html_select( $args = array() ) {
+function wpinv_html_select($args = array()) {
     $defaults = array(
         'options'          => array(),
         'name'             => null,
@@ -357,8 +357,8 @@ 
         'selected'         => 0,
         'placeholder'      => null,
         'multiple'         => false,
-        'show_option_all'  => _x( 'All', 'all dropdown items', 'invoicing' ),
-        'show_option_none' => _x( 'None', 'no dropdown items', 'invoicing' ),
+        'show_option_all'  => _x('All', 'all dropdown items', 'invoicing'),
+        'show_option_none' => _x('None', 'no dropdown items', 'invoicing'),
         'data'             => array(),
         'onchange'         => null,
         'required'         => false,
@@ -366,74 +366,74 @@ 
         'readonly'         => false,
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
     $data_elements = '';
-    foreach ( $args['data'] as $key => $value ) {
-        $data_elements .= ' data-' . esc_attr( $key ) . '="' . esc_attr( $value ) . '"';
+    foreach ($args['data'] as $key => $value) {
+        $data_elements .= ' data-' . esc_attr($key) . '="' . esc_attr($value) . '"';
     }
 
-    if( $args['multiple'] ) {
+    if ($args['multiple']) {
         $multiple = ' MULTIPLE';
     } else {
         $multiple = '';
     }
 
-    if( $args['placeholder'] ) {
+    if ($args['placeholder']) {
         $placeholder = $args['placeholder'];
     } else {
         $placeholder = '';
     }
     
     $options = '';
-    if( !empty( $args['onchange'] ) ) {
-        $options .= ' onchange="' . esc_attr( $args['onchange'] ) . '"';
+    if (!empty($args['onchange'])) {
+        $options .= ' onchange="' . esc_attr($args['onchange']) . '"';
     }
     
-    if( !empty( $args['required'] ) ) {
+    if (!empty($args['required'])) {
         $options .= ' required="required"';
     }
     
-    if( !empty( $args['disabled'] ) ) {
+    if (!empty($args['disabled'])) {
         $options .= ' disabled';
     }
     
-    if( !empty( $args['readonly'] ) ) {
+    if (!empty($args['readonly'])) {
         $options .= ' readonly';
     }
 
-    $class  = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['class'] ) ) );
-    $output = '<select name="' . esc_attr( $args['name'] ) . '" id="' . esc_attr( $args['id'] ) . '" class="wpinv-select ' . $class . '"' . $multiple . ' data-placeholder="' . $placeholder . '" ' . trim( $options ) . $data_elements . '>';
+    $class  = implode(' ', array_map('sanitize_html_class', explode(' ', $args['class'])));
+    $output = '<select name="' . esc_attr($args['name']) . '" id="' . esc_attr($args['id']) . '" class="wpinv-select ' . $class . '"' . $multiple . ' data-placeholder="' . $placeholder . '" ' . trim($options) . $data_elements . '>';
 
-    if ( $args['show_option_all'] ) {
-        if( $args['multiple'] ) {
-            $selected = selected( true, in_array( 0, $args['selected'] ), false );
+    if ($args['show_option_all']) {
+        if ($args['multiple']) {
+            $selected = selected(true, in_array(0, $args['selected']), false);
         } else {
-            $selected = selected( $args['selected'], 0, false );
+            $selected = selected($args['selected'], 0, false);
         }
-        $output .= '<option value="all"' . $selected . '>' . esc_html( $args['show_option_all'] ) . '</option>';
+        $output .= '<option value="all"' . $selected . '>' . esc_html($args['show_option_all']) . '</option>';
     }
 
-    if ( !empty( $args['options'] ) ) {
+    if (!empty($args['options'])) {
 
-        if ( $args['show_option_none'] ) {
-            if( $args['multiple'] ) {
-                $selected = selected( true, in_array( "", $args['selected'] ), false );
+        if ($args['show_option_none']) {
+            if ($args['multiple']) {
+                $selected = selected(true, in_array("", $args['selected']), false);
             } else {
-                $selected = selected( $args['selected'] === "", true, false );
+                $selected = selected($args['selected'] === "", true, false);
             }
-            $output .= '<option value=""' . $selected . '>' . esc_html( $args['show_option_none'] ) . '</option>';
+            $output .= '<option value=""' . $selected . '>' . esc_html($args['show_option_none']) . '</option>';
         }
 
-        foreach( $args['options'] as $key => $option ) {
+        foreach ($args['options'] as $key => $option) {
 
-            if( $args['multiple'] && is_array( $args['selected'] ) ) {
-                $selected = selected( true, (bool)in_array( $key, $args['selected'] ), false );
+            if ($args['multiple'] && is_array($args['selected'])) {
+                $selected = selected(true, (bool) in_array($key, $args['selected']), false);
             } else {
-                $selected = selected( $args['selected'], $key, false );
+                $selected = selected($args['selected'], $key, false);
             }
 
-            $output .= '<option value="' . esc_attr( $key ) . '"' . $selected . '>' . esc_html( $option ) . '</option>';
+            $output .= '<option value="' . esc_attr($key) . '"' . $selected . '>' . esc_html($option) . '</option>';
         }
     }
 
@@ -442,7 +442,7 @@ 
     return $output;
 }
 
-function wpinv_item_dropdown( $args = array() ) {
+function wpinv_item_dropdown($args = array()) {
     $defaults = array(
         'name'              => 'wpi_item',
         'id'                => 'wpi_item',
@@ -450,14 +450,14 @@ 
         'multiple'          => false,
         'selected'          => 0,
         'number'            => -1,
-        'placeholder'       => __( 'Choose a item', 'invoicing' ),
-        'data'              => array( 'search-type' => 'item' ),
+        'placeholder'       => __('Choose a item', 'invoicing'),
+        'data'              => array('search-type' => 'item'),
         'show_option_all'   => false,
         'show_option_none'  => false,
         'show_recurring'    => false,
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
     $item_args = array(
         'post_type'      => 'wpi_item',
@@ -466,44 +466,44 @@ 
         'posts_per_page' => $args['number']
     );
 
-    $item_args  = apply_filters( 'wpinv_item_dropdown_query_args', $item_args, $args, $defaults );
+    $item_args  = apply_filters('wpinv_item_dropdown_query_args', $item_args, $args, $defaults);
 
-    $items      = get_posts( $item_args );
+    $items      = get_posts($item_args);
     $options    = array();
-    if ( $items ) {
-        foreach ( $items as $item ) {
-            $title = esc_html( $item->post_title );
+    if ($items) {
+        foreach ($items as $item) {
+            $title = esc_html($item->post_title);
             
-            if ( !empty( $args['show_recurring'] ) ) {
-                $title .= wpinv_get_item_suffix( $item->ID, false );
+            if (!empty($args['show_recurring'])) {
+                $title .= wpinv_get_item_suffix($item->ID, false);
             }
             
-            $options[ absint( $item->ID ) ] = $title;
+            $options[absint($item->ID)] = $title;
         }
     }
 
     // This ensures that any selected items are included in the drop down
-    if( is_array( $args['selected'] ) ) {
-        foreach( $args['selected'] as $item ) {
-            if( ! in_array( $item, $options ) ) {
-                $title = get_the_title( $item );
-                if ( !empty( $args['show_recurring'] ) ) {
-                    $title .= wpinv_get_item_suffix( $item, false );
+    if (is_array($args['selected'])) {
+        foreach ($args['selected'] as $item) {
+            if (!in_array($item, $options)) {
+                $title = get_the_title($item);
+                if (!empty($args['show_recurring'])) {
+                    $title .= wpinv_get_item_suffix($item, false);
                 }
                 $options[$item] = $title;
             }
         }
-    } elseif ( is_numeric( $args['selected'] ) && $args['selected'] !== 0 ) {
-        if ( ! in_array( $args['selected'], $options ) ) {
-            $title = get_the_title( $args['selected'] );
-            if ( !empty( $args['show_recurring'] ) ) {
-                $title .= wpinv_get_item_suffix( $args['selected'], false );
+    } elseif (is_numeric($args['selected']) && $args['selected'] !== 0) {
+        if (!in_array($args['selected'], $options)) {
+            $title = get_the_title($args['selected']);
+            if (!empty($args['show_recurring'])) {
+                $title .= wpinv_get_item_suffix($args['selected'], false);
             }
-            $options[$args['selected']] = get_the_title( $args['selected'] );
+            $options[$args['selected']] = get_the_title($args['selected']);
         }
     }
 
-    $output = wpinv_html_select( array(
+    $output = wpinv_html_select(array(
         'name'             => $args['name'],
         'selected'         => $args['selected'],
         'id'               => $args['id'],
@@ -514,7 +514,7 @@ 
         'show_option_all'  => $args['show_option_all'],
         'show_option_none' => $args['show_option_none'],
         'data'             => $args['data'],
-    ) );
+    ));
 
     return $output;
 }
@@ -534,16 +534,16 @@ 
     );
 
     $options = array();
-    if ( $items ) {
-        foreach ( $items as $item ) {
-            $options[ $item->ID ] = esc_html( $item->post_title ) . wpinv_get_item_suffix( $item->ID, false );
+    if ($items) {
+        foreach ($items as $item) {
+            $options[$item->ID] = esc_html($item->post_title) . wpinv_get_item_suffix($item->ID, false);
         }
     }
 
     return $options;
 }
 
-function wpinv_html_checkbox( $args = array() ) {
+function wpinv_html_checkbox($args = array()) {
     $defaults = array(
         'name'     => null,
         'current'  => null,
@@ -554,17 +554,17 @@ 
         )
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
-    $class = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['class'] ) ) );
+    $class = implode(' ', array_map('sanitize_html_class', explode(' ', $args['class'])));
     $options = '';
-    if ( ! empty( $args['options']['disabled'] ) ) {
+    if (!empty($args['options']['disabled'])) {
         $options .= ' disabled="disabled"';
-    } elseif ( ! empty( $args['options']['readonly'] ) ) {
+    } elseif (!empty($args['options']['readonly'])) {
         $options .= ' readonly';
     }
 
-    $output = '<input type="checkbox"' . $options . ' name="' . esc_attr( $args['name'] ) . '" id="' . esc_attr( $args['name'] ) . '" class="' . $class . ' ' . esc_attr( $args['name'] ) . '" ' . checked( 1, $args['current'], false ) . ' />';
+    $output = '<input type="checkbox"' . $options . ' name="' . esc_attr($args['name']) . '" id="' . esc_attr($args['name']) . '" class="' . $class . ' ' . esc_attr($args['name']) . '" ' . checked(1, $args['current'], false) . ' />';
 
     return $output;
 }
@@ -572,9 +572,9 @@ 
 /**
  * Displays a hidden field.
  */
-function getpaid_hidden_field( $name, $value ) {
-    $name  = sanitize_text_field( $name );
-    $value = esc_attr( $value );
+function getpaid_hidden_field($name, $value) {
+    $name  = sanitize_text_field($name);
+    $value = esc_attr($value);
 
     echo "<input type='hidden' name='$name' value='$value' />";
 }
@@ -582,31 +582,31 @@ 
 /**
  * Displays a submit field.
  */
-function getpaid_submit_field( $value, $name = 'submit', $class = 'btn-primary' ) {
-    $name  = sanitize_text_field( $name );
-    $value = esc_attr( $value );
-    $class = esc_attr( $class );
+function getpaid_submit_field($value, $name = 'submit', $class = 'btn-primary') {
+    $name  = sanitize_text_field($name);
+    $value = esc_attr($value);
+    $class = esc_attr($class);
 
     echo "<input type='submit' name='$name' value='$value' class='btn $class' />";
 }
 
-function wpinv_html_text( $args = array() ) {
+function wpinv_html_text($args = array()) {
     // Backwards compatibility
-    if ( func_num_args() > 1 ) {
+    if (func_num_args() > 1) {
         $args = func_get_args();
 
         $name  = $args[0];
-        $value = isset( $args[1] ) ? $args[1] : '';
-        $label = isset( $args[2] ) ? $args[2] : '';
-        $desc  = isset( $args[3] ) ? $args[3] : '';
+        $value = isset($args[1]) ? $args[1] : '';
+        $label = isset($args[2]) ? $args[2] : '';
+        $desc  = isset($args[3]) ? $args[3] : '';
     }
 
     $defaults = array(
         'id'           => '',
-        'name'         => isset( $name )  ? $name  : 'text',
-        'value'        => isset( $value ) ? $value : null,
-        'label'        => isset( $label ) ? $label : null,
-        'desc'         => isset( $desc )  ? $desc  : null,
+        'name'         => isset($name) ? $name : 'text',
+        'value'        => isset($value) ? $value : null,
+        'label'        => isset($label) ? $label : null,
+        'desc'         => isset($desc) ? $desc : null,
         'placeholder'  => '',
         'class'        => 'regular-text',
         'disabled'     => false,
@@ -616,41 +616,41 @@ 
         'data'         => false
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
-    $class = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['class'] ) ) );
+    $class = implode(' ', array_map('sanitize_html_class', explode(' ', $args['class'])));
     $options = '';
-    if( $args['required'] ) {
+    if ($args['required']) {
         $options .= ' required="required"';
     }
-    if( $args['readonly'] ) {
+    if ($args['readonly']) {
         $options .= ' readonly';
     }
-    if( $args['readonly'] ) {
+    if ($args['readonly']) {
         $options .= ' readonly';
     }
 
     $data = '';
-    if ( !empty( $args['data'] ) ) {
-        foreach ( $args['data'] as $key => $value ) {
-            $data .= 'data-' . wpinv_sanitize_key( $key ) . '="' . esc_attr( $value ) . '" ';
+    if (!empty($args['data'])) {
+        foreach ($args['data'] as $key => $value) {
+            $data .= 'data-' . wpinv_sanitize_key($key) . '="' . esc_attr($value) . '" ';
         }
     }
 
-    $output = '<span id="wpinv-' . wpinv_sanitize_key( $args['name'] ) . '-wrap">';
-    $output .= '<label class="wpinv-label" for="' . wpinv_sanitize_key( $args['id'] ) . '">' . esc_html( $args['label'] ) . '</label>';
-    if ( ! empty( $args['desc'] ) ) {
-        $output .= '<span class="wpinv-description">' . esc_html( $args['desc'] ) . '</span>';
+    $output = '<span id="wpinv-' . wpinv_sanitize_key($args['name']) . '-wrap">';
+    $output .= '<label class="wpinv-label" for="' . wpinv_sanitize_key($args['id']) . '">' . esc_html($args['label']) . '</label>';
+    if (!empty($args['desc'])) {
+        $output .= '<span class="wpinv-description">' . esc_html($args['desc']) . '</span>';
     }
 
-    $output .= '<input type="text" name="' . esc_attr( $args['name'] ) . '" id="' . esc_attr( $args['id'] )  . '" autocomplete="' . esc_attr( $args['autocomplete'] )  . '" value="' . esc_attr( $args['value'] ) . '" placeholder="' . esc_attr( $args['placeholder'] ) . '" class="' . $class . '" ' . $data . ' ' . trim( $options ) . '/>';
+    $output .= '<input type="text" name="' . esc_attr($args['name']) . '" id="' . esc_attr($args['id']) . '" autocomplete="' . esc_attr($args['autocomplete']) . '" value="' . esc_attr($args['value']) . '" placeholder="' . esc_attr($args['placeholder']) . '" class="' . $class . '" ' . $data . ' ' . trim($options) . '/>';
 
     $output .= '</span>';
 
     return $output;
 }
 
-function wpinv_html_textarea( $args = array() ) {
+function wpinv_html_textarea($args = array()) {
     $defaults = array(
         'name'        => 'textarea',
         'value'       => null,
@@ -661,31 +661,31 @@ 
         'placeholder' => '',
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
-    $class = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['class'] ) ) );
+    $class = implode(' ', array_map('sanitize_html_class', explode(' ', $args['class'])));
     $disabled = '';
-    if( $args['disabled'] ) {
+    if ($args['disabled']) {
         $disabled = ' disabled="disabled"';
     }
 
-    $output = '<span id="wpinv-' . wpinv_sanitize_key( $args['name'] ) . '-wrap">';
-    $output .= '<label class="wpinv-label" for="' . wpinv_sanitize_key( $args['name'] ) . '">' . esc_html( $args['label'] ) . '</label>';
-    $output .= '<textarea name="' . esc_attr( $args['name'] ) . '" placeholder="' . esc_attr( $args['placeholder'] ) . '" id="' . wpinv_sanitize_key( $args['name'] ) . '" class="' . $class . '"' . $disabled . '>' . esc_attr( $args['value'] ) . '</textarea>';
+    $output = '<span id="wpinv-' . wpinv_sanitize_key($args['name']) . '-wrap">';
+    $output .= '<label class="wpinv-label" for="' . wpinv_sanitize_key($args['name']) . '">' . esc_html($args['label']) . '</label>';
+    $output .= '<textarea name="' . esc_attr($args['name']) . '" placeholder="' . esc_attr($args['placeholder']) . '" id="' . wpinv_sanitize_key($args['name']) . '" class="' . $class . '"' . $disabled . '>' . esc_attr($args['value']) . '</textarea>';
 
-    if ( ! empty( $args['desc'] ) ) {
-        $output .= '<span class="wpinv-description">' . esc_html( $args['desc'] ) . '</span>';
+    if (!empty($args['desc'])) {
+        $output .= '<span class="wpinv-description">' . esc_html($args['desc']) . '</span>';
     }
     $output .= '</span>';
 
     return $output;
 }
 
-function wpinv_html_ajax_user_search( $args = array() ) {
+function wpinv_html_ajax_user_search($args = array()) {
     $defaults = array(
         'name'        => 'user_id',
         'value'       => null,
-        'placeholder' => __( 'Enter username', 'invoicing' ),
+        'placeholder' => __('Enter username', 'invoicing'),
         'label'       => null,
         'desc'        => null,
         'class'       => '',
@@ -694,13 +694,13 @@ 
         'data'        => false
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
     $args['class'] = 'wpinv-ajax-user-search ' . $args['class'];
 
     $output  = '<span class="wpinv_user_search_wrap">';
-        $output .= wpinv_html_text( $args );
-        $output .= '<span class="wpinv_user_search_results hidden"><a class="wpinv-ajax-user-cancel" title="' . __( 'Cancel', 'invoicing' ) . '" aria-label="' . __( 'Cancel', 'invoicing' ) . '" href="#">x</a><span></span></span>';
+        $output .= wpinv_html_text($args);
+        $output .= '<span class="wpinv_user_search_results hidden"><a class="wpinv-ajax-user-cancel" title="' . __('Cancel', 'invoicing') . '" aria-label="' . __('Cancel', 'invoicing') . '" href="#">x</a><span></span></span>';
     $output .= '</span>';
 
     return $output;
@@ -711,20 +711,20 @@ 
  * 
  * @param string $template the template that is currently being used.
  */
-function wpinv_template( $template ) {
+function wpinv_template($template) {
     global $post;
 
-    if ( ! is_admin() && ( is_single() || is_404() ) && ! empty( $post->ID ) && getpaid_is_invoice_post_type( get_post_type( $post->ID ) ) ) {
+    if (!is_admin() && (is_single() || is_404()) && !empty($post->ID) && getpaid_is_invoice_post_type(get_post_type($post->ID))) {
 
         // If the user can view this invoice, display it.
-        if ( wpinv_user_can_view_invoice( $post->ID ) ) {
+        if (wpinv_user_can_view_invoice($post->ID)) {
 
-            return wpinv_get_template_part( 'wpinv-invoice-print', false, false );
+            return wpinv_get_template_part('wpinv-invoice-print', false, false);
 
         // Else display an error message.
         } else {
 
-            return wpinv_get_template_part( 'wpinv-invalid-access', false, false );
+            return wpinv_get_template_part('wpinv-invalid-access', false, false);
 
         }
 
@@ -732,24 +732,24 @@ 
 
     return $template;
 }
-add_filter( 'template_include', 'wpinv_template', 10, 1 );
+add_filter('template_include', 'wpinv_template', 10, 1);
 
 function wpinv_get_business_address() {
     $business_address   = wpinv_store_address();
-    $business_address   = !empty( $business_address ) ? wpautop( wp_kses_post( $business_address ) ) : '';
+    $business_address   = !empty($business_address) ? wpautop(wp_kses_post($business_address)) : '';
     
     $business_address = $business_address ? '<div class="address">' . $business_address . '</div>' : '';
     
-    return apply_filters( 'wpinv_get_business_address', $business_address );
+    return apply_filters('wpinv_get_business_address', $business_address);
 }
 
 /**
  * Displays the company address.
  */
 function wpinv_display_from_address() {
-    wpinv_get_template( 'invoice/company-address.php' );
+    wpinv_get_template('invoice/company-address.php');
 }
-add_action( 'getpaid_invoice_details_left', 'wpinv_display_from_address', 10 );
+add_action('getpaid_invoice_details_left', 'wpinv_display_from_address', 10);
 
 /**
  * Generates a watermark text for an invoice.
@@ -757,9 +757,9 @@ 
  * @param WPInv_Invoice $invoice
  * @return string
  */
-function wpinv_watermark( $invoice ) {
-    $watermark = wpinv_get_watermark( $invoice );
-    return apply_filters( 'wpinv_get_watermark', $watermark, $invoice );
+function wpinv_watermark($invoice) {
+    $watermark = wpinv_get_watermark($invoice);
+    return apply_filters('wpinv_get_watermark', $watermark, $invoice);
 }
 
 /**
@@ -768,37 +768,37 @@ 
  * @param WPInv_Invoice $invoice
  * @return string
  */
-function wpinv_get_watermark( $invoice ) {
+function wpinv_get_watermark($invoice) {
     return $invoice->get_status_nicename();
 }
 
 /**
  * @deprecated
  */
-function wpinv_display_invoice_details( $invoice ) {
-    return getpaid_invoice_meta( $invoice );
+function wpinv_display_invoice_details($invoice) {
+    return getpaid_invoice_meta($invoice);
 }
 
 /**
  * Displays invoice meta.
  */
-function getpaid_invoice_meta( $invoice ) {
+function getpaid_invoice_meta($invoice) {
 
-    $invoice = new WPInv_Invoice( $invoice );
+    $invoice = new WPInv_Invoice($invoice);
 
     // Ensure that we have an invoice.
-    if ( 0 == $invoice->get_id() ) {
+    if (0 == $invoice->get_id()) {
         return;
     }
 
     // Get the invoice meta.
-    $meta = getpaid_get_invoice_meta( $invoice );
+    $meta = getpaid_get_invoice_meta($invoice);
 
     // Display the meta.
-    wpinv_get_template( 'invoice/invoice-meta.php', compact( 'invoice', 'meta' ) );
+    wpinv_get_template('invoice/invoice-meta.php', compact('invoice', 'meta'));
 
 }
-add_action( 'getpaid_invoice_details_right', 'getpaid_invoice_meta', 10 );
+add_action('getpaid_invoice_details_right', 'getpaid_invoice_meta', 10);
 
 /**
  * Retrieves the address markup to use on Invoices.
@@ -810,29 +810,29 @@ 
  * @param  string $separator How to separate address lines.
  * @return string
  */
-function wpinv_get_invoice_address_markup( $billing_details, $separator = '<br/>' ) {
+function wpinv_get_invoice_address_markup($billing_details, $separator = '<br/>') {
 
     // Retrieve the address markup...
-    $country= empty( $billing_details['country'] ) ? '' : $billing_details['country'];
-    $format = wpinv_get_full_address_format( $country );
+    $country = empty($billing_details['country']) ? '' : $billing_details['country'];
+    $format = wpinv_get_full_address_format($country);
 
     // ... and the replacements.
-    $replacements = wpinv_get_invoice_address_replacements( $billing_details );
+    $replacements = wpinv_get_invoice_address_replacements($billing_details);
 
-    $formatted_address = str_ireplace( array_keys( $replacements ), $replacements, $format );
+    $formatted_address = str_ireplace(array_keys($replacements), $replacements, $format);
     
 	// Remove unavailable tags.
-    $formatted_address = preg_replace( "/\{\{\w+\}\}/", '', $formatted_address );
+    $formatted_address = preg_replace("/\{\{\w+\}\}/", '', $formatted_address);
 
     // Clean up white space.
-	$formatted_address = preg_replace( '/  +/', ' ', trim( $formatted_address ) );
-    $formatted_address = preg_replace( '/\n\n+/', "\n", $formatted_address );
+	$formatted_address = preg_replace('/  +/', ' ', trim($formatted_address));
+    $formatted_address = preg_replace('/\n\n+/', "\n", $formatted_address);
     
     // Break newlines apart and remove empty lines/trim commas and white space.
-	$formatted_address = array_filter( array_map( 'wpinv_trim_formatted_address_line', explode( "\n", $formatted_address ) ) );
+	$formatted_address = array_filter(array_map('wpinv_trim_formatted_address_line', explode("\n", $formatted_address)));
 
     // Add html breaks.
-	$formatted_address = implode( $separator, $formatted_address );
+	$formatted_address = implode($separator, $formatted_address);
 
 	// We're done!
 	return $formatted_address;
@@ -844,119 +844,119 @@ 
  * 
  * @param WPInv_Invoice $invoice
  */
-function wpinv_display_to_address( $invoice = 0 ) {
-    if ( ! empty( $invoice ) ) {
-        wpinv_get_template( 'invoice/billing-address.php', compact( 'invoice' ) );
+function wpinv_display_to_address($invoice = 0) {
+    if (!empty($invoice)) {
+        wpinv_get_template('invoice/billing-address.php', compact('invoice'));
     }
 }
-add_action( 'getpaid_invoice_details_left', 'wpinv_display_to_address', 40 );
+add_action('getpaid_invoice_details_left', 'wpinv_display_to_address', 40);
 
 
 /**
  * Displays invoice line items.
  */
-function wpinv_display_line_items( $invoice_id = 0 ) {
+function wpinv_display_line_items($invoice_id = 0) {
 
     // Prepare the invoice.
-    $invoice = new WPInv_Invoice( $invoice_id );
+    $invoice = new WPInv_Invoice($invoice_id);
 
     // Abort if there is no invoice.
-    if ( 0 == $invoice->get_id() ) {
+    if (0 == $invoice->get_id()) {
         return;
     }
 
     // Line item columns.
-    $columns = getpaid_invoice_item_columns( $invoice );
-    $columns = apply_filters( 'getpaid_invoice_line_items_table_columns', $columns, $invoice );
+    $columns = getpaid_invoice_item_columns($invoice);
+    $columns = apply_filters('getpaid_invoice_line_items_table_columns', $columns, $invoice);
 
-    wpinv_get_template( 'invoice/line-items.php', compact( 'invoice', 'columns' ) );
+    wpinv_get_template('invoice/line-items.php', compact('invoice', 'columns'));
 }
-add_action( 'getpaid_invoice_line_items', 'wpinv_display_line_items', 10 );
+add_action('getpaid_invoice_line_items', 'wpinv_display_line_items', 10);
 
 /**
  * Displays invoice subscriptions.
  * 
  * @param WPInv_Invoice $invoice
  */
-function getpaid_display_invoice_subscriptions( $invoice ) {
+function getpaid_display_invoice_subscriptions($invoice) {
 
     // Subscriptions.
-	$subscriptions = getpaid_get_invoice_subscriptions( $invoice );
+	$subscriptions = getpaid_get_invoice_subscriptions($invoice);
 
-    if ( empty( $subscriptions ) || ! $invoice->is_recurring() ) {
+    if (empty($subscriptions) || !$invoice->is_recurring()) {
         return;
     }
 
-    $main_subscription = getpaid_get_invoice_subscription( $invoice );
+    $main_subscription = getpaid_get_invoice_subscription($invoice);
 
     // Display related subscriptions.
-    if ( is_array( $subscriptions ) ) {
-        printf( '<h2 class="mt-5 mb-1 h4">%s</h2>', esc_html__( 'Related Subscriptions', 'invoicing' ) );
-        getpaid_admin_subscription_related_subscriptions_metabox( $main_subscription, false );
+    if (is_array($subscriptions)) {
+        printf('<h2 class="mt-5 mb-1 h4">%s</h2>', esc_html__('Related Subscriptions', 'invoicing'));
+        getpaid_admin_subscription_related_subscriptions_metabox($main_subscription, false);
     }
 
-    if ( $main_subscription->get_total_payments() > 1 ) {
-        printf( '<h2 class="mt-5 mb-1 h4">%s</h2>', esc_html__( 'Related Invoices', 'invoicing' ) );
-        getpaid_admin_subscription_invoice_details_metabox( $main_subscription, false );
+    if ($main_subscription->get_total_payments() > 1) {
+        printf('<h2 class="mt-5 mb-1 h4">%s</h2>', esc_html__('Related Invoices', 'invoicing'));
+        getpaid_admin_subscription_invoice_details_metabox($main_subscription, false);
     }
 
 }
-add_action( 'getpaid_invoice_line_items', 'getpaid_display_invoice_subscriptions', 55 );
-add_action( 'wpinv_receipt_end', 'getpaid_display_invoice_subscriptions', 11 );
+add_action('getpaid_invoice_line_items', 'getpaid_display_invoice_subscriptions', 55);
+add_action('wpinv_receipt_end', 'getpaid_display_invoice_subscriptions', 11);
 
 /**
  * Displays invoice notices on invoices.
  */
 function wpinv_display_invoice_notice() {
 
-    $label  = wpinv_get_option( 'vat_invoice_notice_label' );
-    $notice = wpinv_get_option( 'vat_invoice_notice' );
+    $label  = wpinv_get_option('vat_invoice_notice_label');
+    $notice = wpinv_get_option('vat_invoice_notice');
 
-    if ( empty( $label ) && empty( $notice ) ) {
+    if (empty($label) && empty($notice)) {
         return;
     }
 
     echo '<div class="mt-4 mb-4 wpinv-vat-notice">';
 
-    if ( ! empty( $label ) ) {
-        $label = sanitize_text_field( $label );
+    if (!empty($label)) {
+        $label = sanitize_text_field($label);
         echo "<h5>$label</h5>";
     }
 
-    if ( ! empty( $notice ) ) {
-        echo '<small class="form-text text-muted">' . wpautop( wptexturize( $notice ) ) . '</small>';
+    if (!empty($notice)) {
+        echo '<small class="form-text text-muted">' . wpautop(wptexturize($notice)) . '</small>';
     }
 
     echo '</div>';
 }
-add_action( 'getpaid_invoice_line_items', 'wpinv_display_invoice_notice', 100 );
+add_action('getpaid_invoice_line_items', 'wpinv_display_invoice_notice', 100);
 
 /**
  * @param WPInv_Invoice $invoice
  */
-function wpinv_display_invoice_notes( $invoice ) {
+function wpinv_display_invoice_notes($invoice) {
 
     // Retrieve the notes.
-    $notes = wpinv_get_invoice_notes( $invoice->get_id(), 'customer' );
+    $notes = wpinv_get_invoice_notes($invoice->get_id(), 'customer');
 
     // Abort if we have non.
-    if ( empty( $notes ) ) {
+    if (empty($notes)) {
         return;
     }
 
     // Echo the note.
     echo '<div class="getpaid-invoice-notes-wrapper position-relative my-4">';
-    echo '<h2 class="getpaid-invoice-notes-title mb-1 p-0 h4">' . __( 'Notes', 'invoicing' ) .'</h2>';
+    echo '<h2 class="getpaid-invoice-notes-title mb-1 p-0 h4">' . __('Notes', 'invoicing') . '</h2>';
     echo '<ul class="getpaid-invoice-notes text-break overflow-auto list-unstyled p-0 m-0">';
 
-    foreach( $notes as $note ) {
-        wpinv_get_invoice_note_line_item( $note );
+    foreach ($notes as $note) {
+        wpinv_get_invoice_note_line_item($note);
     }
 
     echo '</ul>';
     echo '</div>';
 }
-add_action( 'getpaid_invoice_line_items', 'wpinv_display_invoice_notes', 60 );
+add_action('getpaid_invoice_line_items', 'wpinv_display_invoice_notes', 60);
 
 /**
  * Loads scripts on our invoice templates.
@@ -964,31 +964,31 @@ 
 function wpinv_display_style() {
 
     // Make sure that all scripts have been loaded.
-    if ( ! did_action( 'wp_enqueue_scripts' ) ) {
-        do_action( 'wp_enqueue_scripts' );
+    if (!did_action('wp_enqueue_scripts')) {
+        do_action('wp_enqueue_scripts');
     }
 
     // Register the invoices style.
-    wp_register_style( 'wpinv-single-style', WPINV_PLUGIN_URL . 'assets/css/invoice.css', array(), filemtime( WPINV_PLUGIN_DIR . 'assets/css/invoice.css' ) );
+    wp_register_style('wpinv-single-style', WPINV_PLUGIN_URL . 'assets/css/invoice.css', array(), filemtime(WPINV_PLUGIN_DIR . 'assets/css/invoice.css'));
 
     // Load required styles
-    wp_print_styles( 'wpinv-single-style' );
-    wp_print_styles( 'ayecode-ui' );
+    wp_print_styles('wpinv-single-style');
+    wp_print_styles('ayecode-ui');
 
     // Maybe load custom css.
-    $custom_css = wpinv_get_option( 'template_custom_css' );
+    $custom_css = wpinv_get_option('template_custom_css');
 
-    if ( isset( $custom_css ) && ! empty( $custom_css ) ) {
-        $custom_css     = wp_kses( $custom_css, array( '\'', '\"' ) );
-        $custom_css     = str_replace( '&gt;', '>', $custom_css );
+    if (isset($custom_css) && !empty($custom_css)) {
+        $custom_css     = wp_kses($custom_css, array('\'', '\"'));
+        $custom_css     = str_replace('&gt;', '>', $custom_css);
         echo '<style type="text/css">';
         echo $custom_css;
         echo '</style>';
     }
 
 }
-add_action( 'wpinv_invoice_print_head', 'wpinv_display_style' );
-add_action( 'wpinv_invalid_invoice_head', 'wpinv_display_style' );
+add_action('wpinv_invoice_print_head', 'wpinv_display_style');
+add_action('wpinv_invalid_invoice_head', 'wpinv_display_style');
 
 
 /**
@@ -1000,41 +1000,41 @@ 
     // Retrieve the current invoice.
     $invoice_id = getpaid_get_current_invoice_id();
 
-    if ( empty( $invoice_id ) ) {
+    if (empty($invoice_id)) {
 
         return aui()->alert(
             array(
                 'type'    => 'warning',
-                'content' => __( 'Invalid invoice', 'invoicing' ),
+                'content' => __('Invalid invoice', 'invoicing'),
             )
         );
 
     }
 
     // Can the user view this invoice?
-    if ( ! wpinv_user_can_view_invoice( $invoice_id ) ) {
+    if (!wpinv_user_can_view_invoice($invoice_id)) {
 
         return aui()->alert(
             array(
                 'type'    => 'warning',
-                'content' => __( 'You are not allowed to view this invoice', 'invoicing' ),
+                'content' => __('You are not allowed to view this invoice', 'invoicing'),
             )
         );
 
     }
 
     // Ensure that it is not yet paid for.
-    $invoice = new WPInv_Invoice( $invoice_id );
+    $invoice = new WPInv_Invoice($invoice_id);
 
     // Maybe mark it as viewed.
-    getpaid_maybe_mark_invoice_as_viewed( $invoice );
+    getpaid_maybe_mark_invoice_as_viewed($invoice);
 
-    if ( $invoice->is_paid() ) {
+    if ($invoice->is_paid()) {
 
         return aui()->alert(
             array(
                 'type'    => 'success',
-                'content' => __( 'This invoice has already been paid.', 'invoicing' ),
+                'content' => __('This invoice has already been paid.', 'invoicing'),
             )
         );
 
@@ -1044,15 +1044,15 @@ 
     $wpi_checkout_id = $invoice_id;
 
     // Retrieve appropriate payment form.
-    $payment_form = new GetPaid_Payment_Form( $invoice->get_meta( 'force_payment_form' ) );
-    $payment_form = $payment_form->exists() ? $payment_form : new GetPaid_Payment_Form( wpinv_get_default_payment_form() );
+    $payment_form = new GetPaid_Payment_Form($invoice->get_meta('force_payment_form'));
+    $payment_form = $payment_form->exists() ? $payment_form : new GetPaid_Payment_Form(wpinv_get_default_payment_form());
 
-    if ( ! $payment_form->exists() ) {
+    if (!$payment_form->exists()) {
 
         return aui()->alert(
             array(
                 'type'    => 'warning',
-                'content' => __( 'Error loading the payment form', 'invoicing' ),
+                'content' => __('Error loading the payment form', 'invoicing'),
             )
         );
 
@@ -1061,29 +1061,29 @@ 
     // Set the invoice.
     $payment_form->invoice = $invoice;
 
-    if ( ! $payment_form->is_default() ) {
+    if (!$payment_form->is_default()) {
 
         $items    = array();
         $item_ids = array();
 
-        foreach ( $invoice->get_items() as $item ) {
-            if ( ! in_array( $item->get_id(), $item_ids ) ) {
+        foreach ($invoice->get_items() as $item) {
+            if (!in_array($item->get_id(), $item_ids)) {
                 $item_ids[] = $item->get_id();
                 $items[]    = $item;
             }
         }
 
-        foreach ( $payment_form->get_items() as $item ) {
-            if ( ! in_array( $item->get_id(), $item_ids ) ) {
+        foreach ($payment_form->get_items() as $item) {
+            if (!in_array($item->get_id(), $item_ids)) {
                 $item_ids[] = $item->get_id();
                 $items[]    = $item;
             }
         }
 
-        $payment_form->set_items( $items );
+        $payment_form->set_items($items);
 
     } else {
-        $payment_form->set_items( $invoice->get_items() );
+        $payment_form->set_items($invoice->get_items());
     }
 
     // Generate the html.
@@ -1092,7 +1092,7 @@ 
 }
 
 function wpinv_empty_cart_message() {
-	return apply_filters( 'wpinv_empty_cart_message', '<span class="wpinv_empty_cart">' . __( 'Your cart is empty.', 'invoicing' ) . '</span>' );
+	return apply_filters('wpinv_empty_cart_message', '<span class="wpinv_empty_cart">' . __('Your cart is empty.', 'invoicing') . '</span>');
 }
 
 /**
@@ -1109,76 +1109,76 @@ 
         )
     );
 }
-add_action( 'wpinv_cart_empty', 'wpinv_empty_checkout_cart' );
+add_action('wpinv_cart_empty', 'wpinv_empty_checkout_cart');
 
 /**
  * Filters the receipt page.
  */
-function wpinv_filter_success_page_content( $content ) {
+function wpinv_filter_success_page_content($content) {
 
     // Maybe abort early.
-    if ( is_admin() || ! is_singular() || ! in_the_loop() || ! is_main_query() || is_preview() ) {
+    if (is_admin() || !is_singular() || !in_the_loop() || !is_main_query() || is_preview()) {
         return $content;
     }
 
     // Ensure this is our page.
-    if ( isset( $_GET['payment-confirm'] ) && wpinv_is_success_page() ) {
+    if (isset($_GET['payment-confirm']) && wpinv_is_success_page()) {
 
-        $gateway = sanitize_text_field( $_GET['payment-confirm'] );
-        return apply_filters( "wpinv_payment_confirm_$gateway", $content );
+        $gateway = sanitize_text_field($_GET['payment-confirm']);
+        return apply_filters("wpinv_payment_confirm_$gateway", $content);
 
     }
 
     return $content;
 }
-add_filter( 'the_content', 'wpinv_filter_success_page_content', 99999 );
+add_filter('the_content', 'wpinv_filter_success_page_content', 99999);
 
-function wpinv_invoice_link( $invoice_id ) {
-    $invoice = wpinv_get_invoice( $invoice_id );
+function wpinv_invoice_link($invoice_id) {
+    $invoice = wpinv_get_invoice($invoice_id);
 
-    if ( empty( $invoice ) ) {
+    if (empty($invoice)) {
         return NULL;
     }
 
-    $invoice_link = '<a href="' . esc_url( $invoice->get_view_url() ) . '">' . $invoice->get_number() . '</a>';
+    $invoice_link = '<a href="' . esc_url($invoice->get_view_url()) . '">' . $invoice->get_number() . '</a>';
 
-    return apply_filters( 'wpinv_get_invoice_link', $invoice_link, $invoice );
+    return apply_filters('wpinv_get_invoice_link', $invoice_link, $invoice);
 }
 
-function wpinv_get_invoice_note_line_item( $note, $echo = true ) {
-    if ( empty( $note ) ) {
+function wpinv_get_invoice_note_line_item($note, $echo = true) {
+    if (empty($note)) {
         return NULL;
     }
 
-    if ( is_int( $note ) ) {
-        $note = get_comment( $note );
+    if (is_int($note)) {
+        $note = get_comment($note);
     }
 
-    if ( !( is_object( $note ) && is_a( $note, 'WP_Comment' ) ) ) {
+    if (!(is_object($note) && is_a($note, 'WP_Comment'))) {
         return NULL;
     }
 
-    $note_classes   = array( 'note' );
-    $note_classes[] = get_comment_meta( $note->comment_ID, '_wpi_customer_note', true ) ? 'customer-note' : '';
+    $note_classes   = array('note');
+    $note_classes[] = get_comment_meta($note->comment_ID, '_wpi_customer_note', true) ? 'customer-note' : '';
     $note_classes[] = $note->comment_author === 'System' ? 'system-note' : '';
-    $note_classes   = apply_filters( 'wpinv_invoice_note_class', array_filter( $note_classes ), $note );
-    $note_classes   = !empty( $note_classes ) ? implode( ' ', $note_classes ) : '';
+    $note_classes   = apply_filters('wpinv_invoice_note_class', array_filter($note_classes), $note);
+    $note_classes   = !empty($note_classes) ? implode(' ', $note_classes) : '';
 
     ob_start();
     ?>
-    <li rel="<?php echo absint( $note->comment_ID ) ; ?>" class="<?php echo esc_attr( $note_classes ); ?> mb-2">
+    <li rel="<?php echo absint($note->comment_ID); ?>" class="<?php echo esc_attr($note_classes); ?> mb-2">
         <div class="note_content">
 
-            <?php echo wptexturize( wp_kses_post( $note->comment_content ) ); ?>
+            <?php echo wptexturize(wp_kses_post($note->comment_content)); ?>
 
-            <?php if ( ! is_admin() ) : ?>
+            <?php if (!is_admin()) : ?>
                 <em class="small form-text text-muted mt-0">
                     <?php
                         printf(
-                            __( '%1$s - %2$s at %3$s', 'invoicing' ),
+                            __('%1$s - %2$s at %3$s', 'invoicing'),
                             $note->comment_author,
-                            getpaid_format_date_value( $note->comment_date ),
-                            date_i18n( get_option( 'time_format' ), strtotime( $note->comment_date ) )
+                            getpaid_format_date_value($note->comment_date),
+                            date_i18n(get_option('time_format'), strtotime($note->comment_date))
                         );
                     ?>
                 </em>
@@ -1186,21 +1186,21 @@ 
 
         </div>
 
-        <?php if ( is_admin() ) : ?>
+        <?php if (is_admin()) : ?>
 
             <p class="meta px-4 py-2">
-                <abbr class="exact-date" title="<?php echo esc_attr( $note->comment_date ); ?>">
+                <abbr class="exact-date" title="<?php echo esc_attr($note->comment_date); ?>">
                     <?php
                         printf(
-                            __( '%1$s - %2$s at %3$s', 'invoicing' ),
+                            __('%1$s - %2$s at %3$s', 'invoicing'),
                             $note->comment_author,
-                            getpaid_format_date_value( $note->comment_date ),
-                            date_i18n( get_option( 'time_format' ), strtotime( $note->comment_date ) )
+                            getpaid_format_date_value($note->comment_date),
+                            date_i18n(get_option('time_format'), strtotime($note->comment_date))
                         );
                     ?>
                 </abbr>&nbsp;&nbsp;
-                <?php if ( $note->comment_author !== 'System' && wpinv_current_user_can_manage_invoicing() ) { ?>
-                    <a href="#" class="delete_note"><?php _e( 'Delete note', 'invoicing' ); ?></a>
+                <?php if ($note->comment_author !== 'System' && wpinv_current_user_can_manage_invoicing()) { ?>
+                    <a href="#" class="delete_note"><?php _e('Delete note', 'invoicing'); ?></a>
                 <?php } ?>
             </p>
 
@@ -1209,9 +1209,9 @@ 
     </li>
     <?php
     $note_content = ob_get_clean();
-    $note_content = apply_filters( 'wpinv_get_invoice_note_line_item', $note_content, $note, $echo );
+    $note_content = apply_filters('wpinv_get_invoice_note_line_item', $note_content, $note, $echo);
 
-    if ( $echo ) {
+    if ($echo) {
         echo $note_content;
     } else {
         return $note_content;
@@ -1225,21 +1225,21 @@ 
  * @return string
  */
 function wpinv_get_policy_text() {
-    $privacy_page_id = get_option( 'wp_page_for_privacy_policy', 0 );
+    $privacy_page_id = get_option('wp_page_for_privacy_policy', 0);
 
-    $text = wpinv_get_option('invoicing_privacy_checkout_message', sprintf( __( 'Your personal data will be used to process your invoice, payment and for other purposes described in our %s.', 'invoicing' ), '[wpinv_privacy_policy]' ));
+    $text = wpinv_get_option('invoicing_privacy_checkout_message', sprintf(__('Your personal data will be used to process your invoice, payment and for other purposes described in our %s.', 'invoicing'), '[wpinv_privacy_policy]'));
 
-    if(!$privacy_page_id){
-        $privacy_page_id = wpinv_get_option( 'privacy_page', 0 );
+    if (!$privacy_page_id) {
+        $privacy_page_id = wpinv_get_option('privacy_page', 0);
     }
 
-    $privacy_link    = $privacy_page_id ? '<a href="' . esc_url( get_permalink( $privacy_page_id ) ) . '" class="wpinv-privacy-policy-link" target="_blank">' . __( 'privacy policy', 'invoicing' ) . '</a>' : __( 'privacy policy', 'invoicing' );
+    $privacy_link = $privacy_page_id ? '<a href="' . esc_url(get_permalink($privacy_page_id)) . '" class="wpinv-privacy-policy-link" target="_blank">' . __('privacy policy', 'invoicing') . '</a>' : __('privacy policy', 'invoicing');
 
     $find_replace = array(
         '[wpinv_privacy_policy]' => $privacy_link,
     );
 
-    $privacy_text = str_replace( array_keys( $find_replace ), array_values( $find_replace ), $text );
+    $privacy_text = str_replace(array_keys($find_replace), array_values($find_replace), $text);
 
     return wp_kses_post(wpautop($privacy_text));
 }
@@ -1247,21 +1247,21 @@ 
 function wpinv_oxygen_fix_conflict() {
     global $ct_ignore_post_types;
 
-    if ( ! is_array( $ct_ignore_post_types ) ) {
+    if (!is_array($ct_ignore_post_types)) {
         $ct_ignore_post_types = array();
     }
 
-    $post_types = array( 'wpi_discount', 'wpi_invoice', 'wpi_item', 'wpi_payment_form' );
+    $post_types = array('wpi_discount', 'wpi_invoice', 'wpi_item', 'wpi_payment_form');
 
-    foreach ( $post_types as $post_type ) {
+    foreach ($post_types as $post_type) {
         $ct_ignore_post_types[] = $post_type;
 
         // Ignore post type
-        add_filter( 'pre_option_oxygen_vsb_ignore_post_type_' . $post_type, '__return_true', 999 );
+        add_filter('pre_option_oxygen_vsb_ignore_post_type_' . $post_type, '__return_true', 999);
     }
 
-    remove_filter( 'template_include', 'wpinv_template', 10, 1 );
-    add_filter( 'template_include', 'wpinv_template', 999, 1 );
+    remove_filter('template_include', 'wpinv_template', 10, 1);
+    add_filter('template_include', 'wpinv_template', 999, 1);
 }
 
 /**
@@ -1269,10 +1269,10 @@ 
  * 
  * @param GetPaid_Payment_Form $form
  */
-function getpaid_display_payment_form( $form ) {
+function getpaid_display_payment_form($form) {
 
-    if ( is_numeric( $form ) ) {
-        $form = new GetPaid_Payment_Form( $form );
+    if (is_numeric($form)) {
+        $form = new GetPaid_Payment_Form($form);
     }
 
     $form->display();
@@ -1282,58 +1282,58 @@ 
 /**
  * Helper function to display a item payment form on the frontend.
  */
-function getpaid_display_item_payment_form( $items ) {
+function getpaid_display_item_payment_form($items) {
 
-    $form = new GetPaid_Payment_Form( wpinv_get_default_payment_form() );
-    $form->set_items( $items );
+    $form = new GetPaid_Payment_Form(wpinv_get_default_payment_form());
+    $form->set_items($items);
 
-    if ( 0 == count( $form->get_items() ) ) {
+    if (0 == count($form->get_items())) {
         echo aui()->alert(
 			array(
 				'type'    => 'warning',
-				'content' => __( 'No published items found', 'invoicing' ),
+				'content' => __('No published items found', 'invoicing'),
 			)
         );
         return;
     }
 
-    $extra_items     = esc_attr( getpaid_convert_items_to_string( $items ) );
-    $extra_items_key = md5( NONCE_KEY . AUTH_KEY . $extra_items );
+    $extra_items     = esc_attr(getpaid_convert_items_to_string($items));
+    $extra_items_key = md5(NONCE_KEY . AUTH_KEY . $extra_items);
     $extra_items     = "<input type='hidden' name='getpaid-form-items' value='$extra_items' />";
     $extra_items    .= "<input type='hidden' name='getpaid-form-items-key' value='$extra_items_key' />";
 
-    $form->display( $extra_items );
+    $form->display($extra_items);
 }
 
 /**
  * Helper function to display an invoice payment form on the frontend.
  */
-function getpaid_display_invoice_payment_form( $invoice_id ) {
+function getpaid_display_invoice_payment_form($invoice_id) {
 
-    $invoice = wpinv_get_invoice( $invoice_id );
+    $invoice = wpinv_get_invoice($invoice_id);
 
-    if ( empty( $invoice ) ) {
+    if (empty($invoice)) {
 		echo aui()->alert(
 			array(
 				'type'    => 'warning',
-				'content' => __( 'Invoice not found', 'invoicing' ),
+				'content' => __('Invoice not found', 'invoicing'),
 			)
         );
         return;
     }
 
-    if ( $invoice->is_paid() ) {
+    if ($invoice->is_paid()) {
 		echo aui()->alert(
 			array(
 				'type'    => 'warning',
-				'content' => __( 'Invoice has already been paid', 'invoicing' ),
+				'content' => __('Invoice has already been paid', 'invoicing'),
 			)
         );
         return;
     }
 
-    $form = new GetPaid_Payment_Form( wpinv_get_default_payment_form() );
-    $form->set_items( $invoice->get_items() );
+    $form = new GetPaid_Payment_Form(wpinv_get_default_payment_form());
+    $form->set_items($invoice->get_items());
 
     $form->display();
 }
@@ -1341,23 +1341,23 @@ 
 /**
  * Helper function to convert item string to array.
  */
-function getpaid_convert_items_to_array( $items ) {
-    $items    = array_filter( array_map( 'trim', explode( ',', $items ) ) );
+function getpaid_convert_items_to_array($items) {
+    $items    = array_filter(array_map('trim', explode(',', $items)));
     $prepared = array();
 
-    foreach ( $items as $item ) {
-        $data = array_map( 'trim', explode( '|', $item ) );
+    foreach ($items as $item) {
+        $data = array_map('trim', explode('|', $item));
 
-        if ( empty( $data[0] ) || ! is_numeric( $data[0] ) ) {
+        if (empty($data[0]) || !is_numeric($data[0])) {
             continue;
         }
 
         $quantity = 1;
-        if ( isset( $data[1] ) && is_numeric( $data[1] ) ) {
+        if (isset($data[1]) && is_numeric($data[1])) {
             $quantity = (float) $data[1];
         }
 
-        $prepared[ $data[0] ] = $quantity;
+        $prepared[$data[0]] = $quantity;
 
     }
 
@@ -1367,13 +1367,13 @@ 
 /**
  * Helper function to convert item array to string.
  */
-function getpaid_convert_items_to_string( $items ) {
+function getpaid_convert_items_to_string($items) {
     $prepared = array();
 
-    foreach ( $items as $item => $quantity ) {
+    foreach ($items as $item => $quantity) {
         $prepared[] = "$item|$quantity";
     }
-    return implode( ',', $prepared );
+    return implode(',', $prepared);
 }
 
 /**
@@ -1381,21 +1381,21 @@ 
  * 
  * Provide a label and one of $form, $items or $invoice.
  */
-function getpaid_get_payment_button( $label, $form = null, $items = null, $invoice = null ) {
-    $label = sanitize_text_field( $label );
+function getpaid_get_payment_button($label, $form = null, $items = null, $invoice = null) {
+    $label = sanitize_text_field($label);
 
-    if ( ! empty( $form ) ) {
-        $form  = esc_attr( $form );
+    if (!empty($form)) {
+        $form = esc_attr($form);
         return "<button class='btn btn-primary getpaid-payment-button' type='button' data-form='$form'>$label</button>"; 
     }
 	
-	if ( ! empty( $items ) ) {
-        $items  = esc_attr( $items );
+	if (!empty($items)) {
+        $items = esc_attr($items);
         return "<button class='btn btn-primary getpaid-payment-button' type='button' data-item='$items'>$label</button>"; 
     }
     
-    if ( ! empty( $invoice ) ) {
-        $invoice  = esc_attr( $invoice );
+    if (!empty($invoice)) {
+        $invoice = esc_attr($invoice);
         return "<button class='btn btn-primary getpaid-payment-button' type='button' data-invoice='$invoice'>$label</button>"; 
     }
 
@@ -1406,18 +1406,18 @@ 
  *
  * @param WPInv_Invoice $invoice
  */
-function getpaid_the_invoice_description( $invoice ) {
+function getpaid_the_invoice_description($invoice) {
     $description = $invoice->get_description();
 
-    if ( empty( $description ) ) {
+    if (empty($description)) {
         return;
     }
 
-    $description = wp_kses_post( wpautop( $description ) );
+    $description = wp_kses_post(wpautop($description));
     echo "<small class='getpaid-invoice-description text-dark p-2 form-text' style='margin-bottom: 20px; border-left: 2px solid #2196F3;'><em>$description</em></small>";
 }
-add_action( 'getpaid_invoice_line_items', 'getpaid_the_invoice_description', 100 );
-add_action( 'wpinv_email_billing_details', 'getpaid_the_invoice_description', 100 );
+add_action('getpaid_invoice_line_items', 'getpaid_the_invoice_description', 100);
+add_action('wpinv_email_billing_details', 'getpaid_the_invoice_description', 100);
 
 /**
  * Render element on a form.
@@ -1425,60 +1425,60 @@ 
  * @param array $element
  * @param GetPaid_Payment_Form $form
  */
-function getpaid_payment_form_element( $element, $form ) {
+function getpaid_payment_form_element($element, $form) {
 
     // Set up the args.
-    $element_type    = trim( $element['type'] );
+    $element_type    = trim($element['type']);
     $element['form'] = $form;
-    extract( $element );
+    extract($element);
 
     // Try to locate the appropriate template.
-    $located = wpinv_locate_template( "payment-forms/elements/$element_type.php" );
+    $located = wpinv_locate_template("payment-forms/elements/$element_type.php");
     
     // Abort if this is not our element.
-    if ( empty( $located ) || ! file_exists( $located ) ) {
+    if (empty($located) || !file_exists($located)) {
         return;
     }
 
     // Generate the class and id of the element.
-    $wrapper_class = 'getpaid-payment-form-element-' . trim( esc_attr( $element_type ) );
-    $id            = isset( $id ) ? $id : uniqid( 'gp' );
+    $wrapper_class = 'getpaid-payment-form-element-' . trim(esc_attr($element_type));
+    $id            = isset($id) ? $id : uniqid('gp');
 
     // Echo the opening wrapper.
     echo "<div class='getpaid-payment-form-element $wrapper_class'>";
 
     // Fires before displaying a given element type's content.
-    do_action( "getpaid_before_payment_form_{$element_type}_element", $element, $form );
+    do_action("getpaid_before_payment_form_{$element_type}_element", $element, $form);
 
     // Include the template for the element.
     include $located;
 
     // Fires after displaying a given element type's content.
-    do_action( "getpaid_payment_form_{$element_type}_element", $element, $form );
+    do_action("getpaid_payment_form_{$element_type}_element", $element, $form);
 
     // Echo the closing wrapper.
     echo '</div>';
 }
-add_action( 'getpaid_payment_form_element', 'getpaid_payment_form_element', 10, 2 );
+add_action('getpaid_payment_form_element', 'getpaid_payment_form_element', 10, 2);
 
 /**
  * Render an element's edit page.
  *
  * @param WP_Post $post
  */
-function getpaid_payment_form_edit_element_template( $post ) {
+function getpaid_payment_form_edit_element_template($post) {
 
     // Retrieve all elements.
-    $all_elements = wp_list_pluck( wpinv_get_data( 'payment-form-elements' ), 'type' );
+    $all_elements = wp_list_pluck(wpinv_get_data('payment-form-elements'), 'type');
 
-    foreach ( $all_elements as $element ) {
+    foreach ($all_elements as $element) {
 
         // Try to locate the appropriate template.
-        $element = sanitize_key( $element );
-        $located = wpinv_locate_template( "payment-forms-admin/edit/$element.php" );
+        $element = sanitize_key($element);
+        $located = wpinv_locate_template("payment-forms-admin/edit/$element.php");
 
         // Continue if this is not our element.
-        if ( empty( $located ) || ! file_exists( $located ) ) {
+        if (empty($located) || !file_exists($located)) {
             continue;
         }
 
@@ -1489,7 +1489,7 @@ 
     }
 
 }
-add_action( 'getpaid_payment_form_edit_element_template', 'getpaid_payment_form_edit_element_template' );
+add_action('getpaid_payment_form_edit_element_template', 'getpaid_payment_form_edit_element_template');
 
 /**
  * Render an element's preview.
@@ -1498,16 +1498,16 @@ 
 function getpaid_payment_form_render_element_preview_template() {
 
     // Retrieve all elements.
-    $all_elements = wp_list_pluck( wpinv_get_data( 'payment-form-elements' ), 'type' );
+    $all_elements = wp_list_pluck(wpinv_get_data('payment-form-elements'), 'type');
 
-    foreach ( $all_elements as $element ) {
+    foreach ($all_elements as $element) {
 
         // Try to locate the appropriate template.
-        $element = sanitize_key( $element );
-        $located = wpinv_locate_template( "payment-forms-admin/previews/$element.php" );
+        $element = sanitize_key($element);
+        $located = wpinv_locate_template("payment-forms-admin/previews/$element.php");
 
         // Continue if this is not our element.
-        if ( empty( $located ) || ! file_exists( $located ) ) {
+        if (empty($located) || !file_exists($located)) {
             continue;
         }
 
@@ -1518,7 +1518,7 @@ 
     }
 
 }
-add_action( 'wpinv_payment_form_render_element_template', 'getpaid_payment_form_render_element_preview_template' );
+add_action('wpinv_payment_form_render_element_template', 'getpaid_payment_form_render_element_preview_template');
 
 /**
  * Shows a list of gateways that support recurring payments.
@@ -1526,17 +1526,17 @@ 
 function wpinv_get_recurring_gateways_text() {
     $gateways = array();
 
-    foreach ( wpinv_get_payment_gateways() as $key => $gateway ) {
-        if ( wpinv_gateway_support_subscription( $key ) ) {
-            $gateways[] = sanitize_text_field( $gateway['admin_label'] );
+    foreach (wpinv_get_payment_gateways() as $key => $gateway) {
+        if (wpinv_gateway_support_subscription($key)) {
+            $gateways[] = sanitize_text_field($gateway['admin_label']);
         }
     }
 
-    if ( empty( $gateways ) ) {
-        return "<span class='form-text text-danger'>" . __( 'No active gateways support subscription payments.', 'invoicing' ) ."</span>";
+    if (empty($gateways)) {
+        return "<span class='form-text text-danger'>" . __('No active gateways support subscription payments.', 'invoicing') . "</span>";
     }
 
-    return "<span class='form-text text-muted'>" . wp_sprintf( __( 'Subscription payments only supported by: %s', 'invoicing' ), implode( ', ', $gateways ) ) ."</span>";
+    return "<span class='form-text text-muted'>" . wp_sprintf(__('Subscription payments only supported by: %s', 'invoicing'), implode(', ', $gateways)) . "</span>";
 
 }
 
@@ -1546,7 +1546,7 @@ 
  * @return GetPaid_Template
  */
 function getpaid_template() {
-    return getpaid()->get( 'template' );
+    return getpaid()->get('template');
 }
 
 /**
@@ -1555,8 +1555,8 @@ 
  * @param array args
  * @return string
  */
-function getpaid_paginate_links( $args ) {
-    return str_replace( 'page-link dots', 'page-link text-dark', aui()->pagination( $args ) );
+function getpaid_paginate_links($args) {
+    return str_replace('page-link dots', 'page-link text-dark', aui()->pagination($args));
 }
 
 /**
@@ -1566,21 +1566,21 @@ 
  * @param string state
  * @return string
  */
-function getpaid_get_states_select_markup( $country, $state, $placeholder, $label, $help_text, $required = false, $wrapper_class = 'col-12', $field_name = 'wpinv_state' ) {
+function getpaid_get_states_select_markup($country, $state, $placeholder, $label, $help_text, $required = false, $wrapper_class = 'col-12', $field_name = 'wpinv_state') {
 
-    $states = wpinv_get_country_states( $country );
-    $uniqid = uniqid( '_' );
+    $states = wpinv_get_country_states($country);
+    $uniqid = uniqid('_');
 
-    if ( ! empty( $states ) ) {
+    if (!empty($states)) {
 
-        return aui()->select( array(
+        return aui()->select(array(
             'options'          => $states,
-            'name'             => esc_attr( $field_name ),
-            'id'               => sanitize_html_class( $field_name ) . $uniqid,
-            'value'            => sanitize_text_field( $state ),
+            'name'             => esc_attr($field_name),
+            'id'               => sanitize_html_class($field_name) . $uniqid,
+            'value'            => sanitize_text_field($state),
             'placeholder'      => $placeholder,
             'required'         => $required,
-            'label'            => wp_kses_post( $label ),
+            'label'            => wp_kses_post($label),
             'label_type'       => 'vertical',
             'help_text'        => $help_text,
             'class'            => 'getpaid-address-field wpinv_state',
@@ -1595,14 +1595,14 @@ 
 
     return aui()->input(
         array(
-            'name'        => esc_attr( $field_name ),
-            'id'          => sanitize_html_class( $field_name ) . $uniqid,
+            'name'        => esc_attr($field_name),
+            'id'          => sanitize_html_class($field_name) . $uniqid,
             'placeholder' => $placeholder,
             'required'    => $required,
-            'label'       => wp_kses_post( $label ),
+            'label'       => wp_kses_post($label),
             'label_type'  => 'vertical',
             'help_text'   => $help_text,
-            'value'       => sanitize_text_field( $state ),
+            'value'       => sanitize_text_field($state),
             'class'       => 'getpaid-address-field wpinv_state',
             'wrap_class'  => "$wrapper_class getpaid-address-field-wrapper__state",
             'label_class' => 'getpaid-address-field-label getpaid-address-field-label__state',
@@ -1620,16 +1620,16 @@ 
  * @param array $element
  * @return string
  */
-function getpaid_get_form_element_grid_class( $element ) {
+function getpaid_get_form_element_grid_class($element) {
 
     $class = "col-12";
-    $width = empty( $element['grid_width'] ) ? 'full' : $element['grid_width'];
+    $width = empty($element['grid_width']) ? 'full' : $element['grid_width'];
 
-    if ( $width == 'half' ) {
+    if ($width == 'half') {
         $class .= " col-md-6";
     }
 
-    if ( $width == 'third' ) {
+    if ($width == 'third') {
         $class .= " col-md-4";
     }
 
@@ -1644,15 +1644,15 @@ 
  *
  * @return string
  */
-function getpaid_embed_url( $payment_form = false, $items = false ) {
+function getpaid_embed_url($payment_form = false, $items = false) {
 
     return add_query_arg(
         array(
             'getpaid_embed' => 1,
-            'form'          => $payment_form ? absint( $payment_form ) : false,
-            'item'          => $items ? urlencode( $items ) : false
+            'form'          => $payment_form ? absint($payment_form) : false,
+            'item'          => $items ? urlencode($items) : false
         ),
-        home_url( 'index.php' )
+        home_url('index.php')
     );
 
 }
@@ -1662,13 +1662,13 @@ 
  *
  * @return string
  */
-function getpaid_filter_embed_template( $template ) {
+function getpaid_filter_embed_template($template) {
 
-    if ( isset( $_GET['getpaid_embed'] ) ) {
-        wpinv_get_template( 'payment-forms/embed.php' );
+    if (isset($_GET['getpaid_embed'])) {
+        wpinv_get_template('payment-forms/embed.php');
         exit;
     }
 
     return $template;
 }
-add_filter( 'template_include', 'getpaid_filter_embed_template' );
+add_filter('template_include', 'getpaid_filter_embed_template');

templates/payment-forms/elements/discount.php

Spacing +8 added lines, -8 removed lines

@@ -8,24 +8,24 @@ 
  * @var GetPaid_Payment_Form $form The current payment form
  */
 
-defined( 'ABSPATH' ) || exit;
+defined('ABSPATH') || exit;
 
-if ( ! getpaid_has_published_discount() ) {
+if (!getpaid_has_published_discount()) {
     return;
 }
 
-$placeholder = esc_attr( $input_label );
-$label       = esc_html( $button_label );
+$placeholder = esc_attr($input_label);
+$label       = esc_html($button_label);
 
-if ( ! empty( $description ) ) {
+if (!empty($description)) {
     $description = "<small class='form-text text-muted'>$description</small>";
 } else {
     $description = '';
 }
 
 $discount_code = '';
-if ( ! empty( $form->invoice ) ) {
-    $discount_code = esc_attr( $form->invoice->get_discount_code() );
+if (!empty($form->invoice)) {
+    $discount_code = esc_attr($form->invoice->get_discount_code());
 }
 
 ?>
@@ -36,7 +36,7 @@ 
             <input name="discount" placeholder="<?php echo $placeholder; ?>" value="<?php echo $discount_code; ?>" class="form-control mr-2 mb-2 getpaid-discount-field-input" style="flex: 1;" type="text">
             <a href="#" class="btn btn-secondary submit-button mb-2 getpaid-discount-button"><?php echo $label; ?></a>
         </div>
-        <?php echo wp_kses_post( $description ); ?>
+        <?php echo wp_kses_post($description); ?>
         <div class="getpaid-custom-payment-form-errors alert alert-danger d-none"></div>
     </div>
 </div>

templates/payment-forms/elements/heading.php

Spacing +4 added lines, -4 removed lines

@@ -7,11 +7,11 @@
  * @version 1.0.19
  */
 
-defined( 'ABSPATH' ) || exit;
+defined('ABSPATH') || exit;
 
-$tag  = isset( $element['level'] ) ? trim( $element['level'] ) : 'h3';
-$text = isset( $element['text'] ) ? wp_kses_post( trim( $element['text'] ) ) : '';
+$tag  = isset($element['level']) ? trim($element['level']) : 'h3';
+$text = isset($element['text']) ? wp_kses_post(trim($element['text'])) : '';
 
-if ( ! empty( $text ) ) {
+if (!empty($text)) {
     echo "<$tag>$text</$tag>";
 }

templates/payment-forms/elements/paragraph.php

Spacing +3 added lines, -3 removed lines

@@ -7,10 +7,10 @@
  * @version 1.0.19
  */
 
-defined( 'ABSPATH' ) || exit;
+defined('ABSPATH') || exit;
 
-$text = isset( $element['text'] ) ? wp_kses_post( trim( $element['text'] ) ) : '';
+$text = isset($element['text']) ? wp_kses_post(trim($element['text'])) : '';
 
-if ( ! empty( $text ) ) {
+if (!empty($text)) {
     echo "<p>$text</p>";
 }

includes/payments/class-getpaid-payment-form.php

Spacing +155 added lines, -155 removed lines

@@ -1,5 +1,5 @@ 
 <?php
-if ( ! defined( 'ABSPATH' ) ) {
+if (!defined('ABSPATH')) {
 	exit;
 }
 
@@ -72,28 +72,28 @@ 
 	 *
 	 * @param  int|object|GetPaid_Payment_Form|WP_Post $form Form to read.
 	 */
-	public function __construct( $form = 0 ) {
-		parent::__construct( $form );
+	public function __construct($form = 0) {
+		parent::__construct($form);
 
-		if ( is_numeric( $form ) && $form > 0 ) {
-			$this->set_id( $form );
-		} elseif ( $form instanceof self ) {
+		if (is_numeric($form) && $form > 0) {
+			$this->set_id($form);
+		} elseif ($form instanceof self) {
 
-			$this->set_id( $form->get_id() );
+			$this->set_id($form->get_id());
 			$this->invoice = $form->invoice;
 
-		} elseif ( ! empty( $form->ID ) ) {
-			$this->set_id( $form->ID );
+		} elseif (!empty($form->ID)) {
+			$this->set_id($form->ID);
 		} else {
-			$this->set_object_read( true );
+			$this->set_object_read(true);
 		}
 
         // Load the datastore.
-		$this->data_store = GetPaid_Data_Store::load( $this->data_store_name );
+		$this->data_store = GetPaid_Data_Store::load($this->data_store_name);
 
-		if ( $this->get_id() > 0 ) {
-            $this->post = get_post( $this->get_id() );
-			$this->data_store->read( $this );
+		if ($this->get_id() > 0) {
+            $this->post = get_post($this->get_id());
+			$this->data_store->read($this);
         }
 
 	}
@@ -120,8 +120,8 @@ 
 	 * @param  string $context View or edit context.
 	 * @return string
 	 */
-	public function get_version( $context = 'view' ) {
-		return $this->get_prop( 'version', $context );
+	public function get_version($context = 'view') {
+		return $this->get_prop('version', $context);
     }
 
     /**
@@ -131,8 +131,8 @@ 
 	 * @param  string $context View or edit context.
 	 * @return string
 	 */
-	public function get_date_created( $context = 'view' ) {
-		return $this->get_prop( 'date_created', $context );
+	public function get_date_created($context = 'view') {
+		return $this->get_prop('date_created', $context);
     }
 
     /**
@@ -142,11 +142,11 @@ 
 	 * @param  string $context View or edit context.
 	 * @return string
 	 */
-	public function get_date_created_gmt( $context = 'view' ) {
-        $date = $this->get_date_created( $context );
+	public function get_date_created_gmt($context = 'view') {
+        $date = $this->get_date_created($context);
 
-        if ( $date ) {
-            $date = get_gmt_from_date( $date );
+        if ($date) {
+            $date = get_gmt_from_date($date);
         }
 		return $date;
     }
@@ -158,8 +158,8 @@ 
 	 * @param  string $context View or edit context.
 	 * @return string
 	 */
-	public function get_date_modified( $context = 'view' ) {
-		return $this->get_prop( 'date_modified', $context );
+	public function get_date_modified($context = 'view') {
+		return $this->get_prop('date_modified', $context);
     }
 
     /**
@@ -169,11 +169,11 @@ 
 	 * @param  string $context View or edit context.
 	 * @return string
 	 */
-	public function get_date_modified_gmt( $context = 'view' ) {
-        $date = $this->get_date_modified( $context );
+	public function get_date_modified_gmt($context = 'view') {
+        $date = $this->get_date_modified($context);
 
-        if ( $date ) {
-            $date = get_gmt_from_date( $date );
+        if ($date) {
+            $date = get_gmt_from_date($date);
         }
 		return $date;
     }
@@ -185,8 +185,8 @@ 
 	 * @param  string $context View or edit context.
 	 * @return string
 	 */
-	public function get_name( $context = 'view' ) {
-		return $this->get_prop( 'name', $context );
+	public function get_name($context = 'view') {
+		return $this->get_prop('name', $context);
     }
 
     /**
@@ -196,8 +196,8 @@ 
 	 * @param  string $context View or edit context.
 	 * @return string
 	 */
-	public function get_title( $context = 'view' ) {
-		return $this->get_name( $context );
+	public function get_title($context = 'view') {
+		return $this->get_name($context);
 	}
 
     /**
@@ -207,8 +207,8 @@ 
 	 * @param  string $context View or edit context.
 	 * @return int
 	 */
-	public function get_author( $context = 'view' ) {
-		return (int) $this->get_prop( 'author', $context );
+	public function get_author($context = 'view') {
+		return (int) $this->get_prop('author', $context);
     }
 
     /**
@@ -218,21 +218,21 @@ 
 	 * @param  string $context View or edit context.
 	 * @return array
 	 */
-	public function get_elements( $context = 'view' ) {
-		$elements = $this->get_prop( 'elements', $context );
+	public function get_elements($context = 'view') {
+		$elements = $this->get_prop('elements', $context);
 
-		if ( empty( $elements ) || ! is_array( $elements ) ) {
-            return wpinv_get_data( 'sample-payment-form' );
+		if (empty($elements) || !is_array($elements)) {
+            return wpinv_get_data('sample-payment-form');
 		}
 
 		// Ensure that all required elements exist.
 		$_elements = array();
-		foreach ( $elements as $element ) {
+		foreach ($elements as $element) {
 
-			if ( $element['type'] == 'pay_button' && ! $this->has_element_type( 'gateway_select' ) ) {
+			if ($element['type'] == 'pay_button' && !$this->has_element_type('gateway_select')) {
 
 				$_elements[] = array(
-					'text'        => __( 'Select Payment Method', 'invoicing' ),
+					'text'        => __('Select Payment Method', 'invoicing'),
 					'id'          => 'gtscicd',
 					'name'        => 'gtscicd',
 					'type'        => 'gateway_select',
@@ -257,22 +257,22 @@ 
 	 * @param  string $return objects or arrays.
 	 * @return GetPaid_Form_Item[]
 	 */
-	public function get_items( $context = 'view', $return = 'objects' ) {
-		$items = $this->get_prop( 'items', $context );
+	public function get_items($context = 'view', $return = 'objects') {
+		$items = $this->get_prop('items', $context);
 
-		if ( empty( $items ) || ! is_array( $items ) ) {
-            $items = wpinv_get_data( 'sample-payment-form-items' );
+		if (empty($items) || !is_array($items)) {
+            $items = wpinv_get_data('sample-payment-form-items');
 		}
 
 		// Convert the items.
 		$prepared = array();
 
-		foreach ( $items as $key => $value ) {
+		foreach ($items as $key => $value) {
 
 			// Form items.
-			if ( $value instanceof GetPaid_Form_Item ) {
+			if ($value instanceof GetPaid_Form_Item) {
 
-				if ( $value->can_purchase() ) {
+				if ($value->can_purchase()) {
 					$prepared[] = $value;
 				}
 
@@ -281,16 +281,16 @@ 
 			}
 
 			// $item_id => $quantity (buy buttons)
-			if ( is_numeric( $key ) && is_numeric( $value ) ) {
-				$item = new GetPaid_Form_Item( $key );
+			if (is_numeric($key) && is_numeric($value)) {
+				$item = new GetPaid_Form_Item($key);
 
-				if ( $item->can_purchase() ) {
+				if ($item->can_purchase()) {
 
 					$value = (float) $value;
-					$item->set_quantity( $value );
-					if ( 0 == $value ) {
-						$item->set_quantity( 1 );
-						$item->set_allow_quantities( true );
+					$item->set_quantity($value);
+					if (0 == $value) {
+						$item->set_quantity(1);
+						$item->set_allow_quantities(true);
 					}
 
 					$prepared[] = $item;
@@ -300,33 +300,33 @@ 
 			}
 
 			// Items saved via payment forms editor.
-			if ( is_array( $value ) && isset( $value['id'] ) ) {
+			if (is_array($value) && isset($value['id'])) {
 
-				$item = new GetPaid_Form_Item( $value['id'] );
+				$item = new GetPaid_Form_Item($value['id']);
 
-				if ( ! $item->can_purchase() ) {
+				if (!$item->can_purchase()) {
 					continue;
 				}
 
 				// Sub-total (Cart items).
-				if ( isset( $value['subtotal'] ) ) {
-					$item->set_price( $value['subtotal'] );
+				if (isset($value['subtotal'])) {
+					$item->set_price($value['subtotal']);
 				}
 
-				if ( isset( $value['quantity'] ) ) {
-					$item->set_quantity( $value['quantity'] );
+				if (isset($value['quantity'])) {
+					$item->set_quantity($value['quantity']);
 				}
 
-				if ( isset( $value['allow_quantities'] ) ) {
-					$item->set_allow_quantities( $value['allow_quantities'] );
+				if (isset($value['allow_quantities'])) {
+					$item->set_allow_quantities($value['allow_quantities']);
 				}
 
-				if ( isset( $value['required'] ) ) {
-					$item->set_is_required( $value['required'] );
+				if (isset($value['required'])) {
+					$item->set_is_required($value['required']);
 				}
 
-				if ( isset( $value['description'] ) ) {
-					$item->set_custom_description( $value['description'] );
+				if (isset($value['description'])) {
+					$item->set_custom_description($value['description']);
 				}
 
 				$prepared[] = $item;
@@ -335,14 +335,14 @@ 
 			}
 
 			// $item_id => array( 'price' => 10 ) (item variations)
-			if ( is_numeric( $key ) && is_array( $value ) ) {
-				$item = new GetPaid_Form_Item( $key );
+			if (is_numeric($key) && is_array($value)) {
+				$item = new GetPaid_Form_Item($key);
 
-				if ( isset( $value['price'] ) && $item->user_can_set_their_price() ) {
-					$item->set_price( $value['price'] );
+				if (isset($value['price']) && $item->user_can_set_their_price()) {
+					$item->set_price($value['price']);
 				}
 
-				if ( $item->can_purchase() ) {
+				if ($item->can_purchase()) {
 					$prepared[] = $item;
 				}
 
@@ -351,12 +351,12 @@ 
 
 		}
 
-		if ( 'objects' == $return && 'view' == $context ) {
+		if ('objects' == $return && 'view' == $context) {
 			return $prepared;
 		}
 
 		$items = array();
-		foreach ( $prepared as $item ) {
+		foreach ($prepared as $item) {
 			$items[] = $item->prepare_data_for_use();
 		}
 
@@ -370,14 +370,14 @@ 
 	 * @param  int $item_id The item id to return.
 	 * @return GetPaid_Form_Item|bool
 	 */
-	public function get_item( $item_id ) {
+	public function get_item($item_id) {
 
-		if ( empty( $item_id ) || ! is_numeric( $item_id ) ) {
+		if (empty($item_id) || !is_numeric($item_id)) {
 			return false;
 		}
 
-		foreach( $this->get_items() as $item ) {
-			if ( $item->get_id() == (int) $item_id ) {
+		foreach ($this->get_items() as $item) {
+			if ($item->get_id() == (int) $item_id) {
 				return $item;
 			}
 		}
@@ -393,15 +393,15 @@ 
 	 * @param  string $element_type The element type to return.
 	 * @return array|bool
 	 */
-	public function get_element_type( $element_type ) {
+	public function get_element_type($element_type) {
 
-		if ( empty( $element_type ) || ! is_scalar( $element_type ) ) {
+		if (empty($element_type) || !is_scalar($element_type)) {
 			return false;
 		}
 
-		foreach ( $this->get_prop( 'elements' ) as $element ) {
+		foreach ($this->get_prop('elements') as $element) {
 
-			if ( $element['type'] == $element_type ) {
+			if ($element['type'] == $element_type) {
 				return $element;
 			}
 
@@ -418,8 +418,8 @@ 
 	 * @param  string $context View or edit context.
 	 * @return float
 	 */
-	public function get_earned( $context = 'view' ) {
-		return $this->get_prop( 'earned', $context );
+	public function get_earned($context = 'view') {
+		return $this->get_prop('earned', $context);
 	}
 
 	/**
@@ -429,8 +429,8 @@ 
 	 * @param  string $context View or edit context.
 	 * @return float
 	 */
-	public function get_refunded( $context = 'view' ) {
-		return $this->get_prop( 'refunded', $context );
+	public function get_refunded($context = 'view') {
+		return $this->get_prop('refunded', $context);
 	}
 
 	/**
@@ -440,8 +440,8 @@ 
 	 * @param  string $context View or edit context.
 	 * @return float
 	 */
-	public function get_cancelled( $context = 'view' ) {
-		return $this->get_prop( 'cancelled', $context );
+	public function get_cancelled($context = 'view') {
+		return $this->get_prop('cancelled', $context);
 	}
 
 	/**
@@ -451,8 +451,8 @@ 
 	 * @param  string $context View or edit context.
 	 * @return float
 	 */
-	public function get_failed( $context = 'view' ) {
-		return $this->get_prop( 'failed', $context );
+	public function get_failed($context = 'view') {
+		return $this->get_prop('failed', $context);
 	}
 
 	/**
@@ -463,8 +463,8 @@ 
 	 * @return string
 	 */
 	public function get_currency() {
-		$currency = empty( $this->invoice ) ? wpinv_get_currency() : $this->invoice->get_currency();
-		return apply_filters( 'getpaid-payment-form-currency', $currency, $this );
+		$currency = empty($this->invoice) ? wpinv_get_currency() : $this->invoice->get_currency();
+		return apply_filters('getpaid-payment-form-currency', $currency, $this);
 	}
 
     /*
@@ -482,8 +482,8 @@ 
 	 *
 	 * @since 1.0.19
 	 */
-	public function set_version( $value ) {
-		$this->set_prop( 'version', $value );
+	public function set_version($value) {
+		$this->set_prop('version', $value);
     }
 
     /**
@@ -493,11 +493,11 @@ 
 	 * @param string $value Value to set.
      * @return bool Whether or not the date was set.
 	 */
-	public function set_date_created( $value ) {
-        $date = strtotime( $value );
+	public function set_date_created($value) {
+        $date = strtotime($value);
 
-        if ( $date ) {
-            $this->set_prop( 'date_created', date( 'Y-m-d H:i:s', $date ) );
+        if ($date) {
+            $this->set_prop('date_created', date('Y-m-d H:i:s', $date));
             return true;
         }
 
@@ -512,11 +512,11 @@ 
 	 * @param string $value Value to set.
      * @return bool Whether or not the date was set.
 	 */
-	public function set_date_modified( $value ) {
-        $date = strtotime( $value );
+	public function set_date_modified($value) {
+        $date = strtotime($value);
 
-        if ( $date ) {
-            $this->set_prop( 'date_modified', date( 'Y-m-d H:i:s', $date ) );
+        if ($date) {
+            $this->set_prop('date_modified', date('Y-m-d H:i:s', $date));
             return true;
         }
 
@@ -530,8 +530,8 @@ 
 	 * @since 1.0.19
 	 * @param  string $value New name.
 	 */
-	public function set_name( $value ) {
-		$this->set_prop( 'name', sanitize_text_field( $value ) );
+	public function set_name($value) {
+		$this->set_prop('name', sanitize_text_field($value));
     }
 
     /**
@@ -540,8 +540,8 @@ 
 	 * @since 1.0.19
 	 * @param  string $value New name.
 	 */
-	public function set_title( $value ) {
-		$this->set_name( $value );
+	public function set_title($value) {
+		$this->set_name($value);
     }
 
     /**
@@ -550,8 +550,8 @@ 
 	 * @since 1.0.19
 	 * @param  int $value New author.
 	 */
-	public function set_author( $value ) {
-		$this->set_prop( 'author', (int) $value );
+	public function set_author($value) {
+		$this->set_prop('author', (int) $value);
 	}
 
 	/**
@@ -561,9 +561,9 @@ 
 	 * @sinve 2.3.4 Array values sanitized.
 	 * @param  array $value Form elements.
 	 */
-	public function set_elements( $value ) {
-		if ( is_array( $value ) ) {
-			$this->set_prop( 'elements', wp_kses_post_deep( $value ) );
+	public function set_elements($value) {
+		if (is_array($value)) {
+			$this->set_prop('elements', wp_kses_post_deep($value));
 		}
 	}
 
@@ -574,18 +574,18 @@ 
 	 *
 	 * @return mixed
 	 */
-	public function sanitize_array_values($value){
+	public function sanitize_array_values($value) {
 
 		// sanitize
-		if(!empty($value )){
+		if (!empty($value)) {
 
-			foreach($value as $key => $val_arr){
+			foreach ($value as $key => $val_arr) {
 
-				if(is_array($val_arr)){
+				if (is_array($val_arr)) {
 					// check if we have sub array items.
 					$sub_arr = array();
-					foreach($val_arr as $key2 => $val2){
-						if(is_array($val2)){
+					foreach ($val_arr as $key2 => $val2) {
+						if (is_array($val2)) {
 							$sub_arr[$key2] = $this->sanitize_array_values($val2);
 							unset($val_arr[$key][$key2]);
 						}
@@ -595,14 +595,14 @@ 
 					$help_text = !empty($val_arr['description']) ? wp_kses_post($val_arr['description']) : '';
 
 					// sanitize array elements
-					$value[$key] = array_map( 'sanitize_text_field', $val_arr );
+					$value[$key] = array_map('sanitize_text_field', $val_arr);
 
 					// add back the description if set
-					if(isset($val_arr['description'])){ $value[$key]['description'] = $help_text;}
+					if (isset($val_arr['description'])) { $value[$key]['description'] = $help_text; }
 
 					// add back sub array items after its been sanitized.
-					if ( ! empty( $sub_arr ) ) {
-						$value[$key] = array_merge($value[$key],$sub_arr);
+					if (!empty($sub_arr)) {
+						$value[$key] = array_merge($value[$key], $sub_arr);
 					}
 				}
 
@@ -619,9 +619,9 @@ 
 	 * @since 1.0.19
 	 * @param  array $value Form elements.
 	 */
-	public function set_items( $value ) {
-		if ( is_array( $value ) ) {
-			$this->set_prop( 'items', $value );
+	public function set_items($value) {
+		if (is_array($value)) {
+			$this->set_prop('items', $value);
 		}
 	}
 
@@ -631,9 +631,9 @@ 
 	 * @since 1.0.19
 	 * @param  float $value Amount earned.
 	 */
-	public function set_earned( $value ) {
-		$value = max( (float) $value, 0 );
-		$this->set_prop( 'earned', $value );
+	public function set_earned($value) {
+		$value = max((float) $value, 0);
+		$this->set_prop('earned', $value);
 	}
 
 	/**
@@ -642,9 +642,9 @@ 
 	 * @since 1.0.19
 	 * @param  float $value Amount refunded.
 	 */
-	public function set_refunded( $value ) {
-		$value = max( (float) $value, 0 );
-		$this->set_prop( 'refunded', $value );
+	public function set_refunded($value) {
+		$value = max((float) $value, 0);
+		$this->set_prop('refunded', $value);
 	}
 
 	/**
@@ -653,9 +653,9 @@ 
 	 * @since 1.0.19
 	 * @param  float $value Amount cancelled.
 	 */
-	public function set_cancelled( $value ) {
-		$value = max( (float) $value, 0 );
-		$this->set_prop( 'cancelled', $value );
+	public function set_cancelled($value) {
+		$value = max((float) $value, 0);
+		$this->set_prop('cancelled', $value);
 	}
 
 	/**
@@ -664,9 +664,9 @@ 
 	 * @since 1.0.19
 	 * @param  float $value Amount cancelled.
 	 */
-	public function set_failed( $value ) {
-		$value = max( (float) $value, 0 );
-		$this->set_prop( 'failed', $value );
+	public function set_failed($value) {
+		$value = max((float) $value, 0);
+		$this->set_prop('failed', $value);
 	}
 
     /**
@@ -675,11 +675,11 @@ 
      * @deprecated
 	 * @return int item id
      */
-    public function create( $data = array() ) {
+    public function create($data = array()) {
 
 		// Set the properties.
-		if ( is_array( $data ) ) {
-			$this->set_props( $data );
+		if (is_array($data)) {
+			$this->set_props($data);
 		}
 
 		// Save the item.
@@ -693,8 +693,8 @@ 
      * @deprecated
 	 * @return int item id
      */
-    public function update( $data = array() ) {
-        return $this->create( $data );
+    public function update($data = array()) {
+        return $this->create($data);
     }
 
     /*
@@ -714,7 +714,7 @@ 
 	 */
     public function is_default() {
         $is_default = $this->get_id() == wpinv_get_default_payment_form();
-        return (bool) apply_filters( 'wpinv_is_default_payment_form', $is_default, $this->get_id(), $this );
+        return (bool) apply_filters('wpinv_is_default_payment_form', $is_default, $this->get_id(), $this);
 	}
 
     /**
@@ -726,11 +726,11 @@ 
     public function is_active() {
         $is_active = 0 !== (int) $this->get_id();
 
-        if ( $is_active && ! current_user_can( 'edit_post', $this->get_id() ) && $this->get_status() != 'publish' ) {
+        if ($is_active && !current_user_can('edit_post', $this->get_id()) && $this->get_status() != 'publish') {
             $is_active = false;
         }
 
-        return (bool) apply_filters( 'wpinv_is_payment_form_active', $is_active, $this );
+        return (bool) apply_filters('wpinv_is_payment_form_active', $is_active, $this);
 	}
 
 	/**
@@ -739,8 +739,8 @@ 
 	 * @since 1.0.19
 	 * @return bool
 	 */
-    public function has_item( $item_id ) {
-        return false !== $this->get_item( $item_id );
+    public function has_item($item_id) {
+        return false !== $this->get_item($item_id);
 	}
 
 	/**
@@ -749,8 +749,8 @@ 
 	 * @since 1.0.19
 	 * @return bool
 	 */
-    public function has_element_type( $element_type ) {
-        return false !== $this->get_element_type( $element_type );
+    public function has_element_type($element_type) {
+        return false !== $this->get_element_type($element_type);
 	}
 
 	/**
@@ -761,13 +761,13 @@ 
 	 */
     public function is_recurring() {
 
-		if ( ! empty( $this->invoice ) ) {
+		if (!empty($this->invoice)) {
 			return $this->invoice->is_recurring();
 		}
 
-		foreach ( $this->get_items() as $item ) {
+		foreach ($this->get_items() as $item) {
 
-			if ( $item->is_recurring() ) {
+			if ($item->is_recurring()) {
 				return true;
 			}
 
@@ -781,7 +781,7 @@ 
 	 *
 	 * @since 1.0.19
 	 */
-    public function get_html( $extra_markup = '' ) {
+    public function get_html($extra_markup = '') {
 
 		// Return the HTML.
 		return wpinv_get_template_html(
@@ -799,8 +799,8 @@ 
 	 *
 	 * @since 1.0.19
 	 */
-    public function display( $extra_markup = '' ) {
-		echo $this->get_html( $extra_markup );
+    public function display($extra_markup = '') {
+		echo $this->get_html($extra_markup);
     }
 
 }