AyeCode / invoicing

includes/class-wpinv-ajax.php

Spacing +295 added lines, -295 removed lines

@@ -7,28 +7,28 @@ 
  */
  
 // 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_Ajax {
     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();
     }
 
     public static function define_ajax() {
-        if ( !empty( $_GET['wpinv-ajax'] ) ) {
-            if ( ! defined( 'DOING_AJAX' ) ) {
-                define( 'DOING_AJAX', true );
+        if (!empty($_GET['wpinv-ajax'])) {
+            if (!defined('DOING_AJAX')) {
+                define('DOING_AJAX', true);
             }
-            if ( ! defined( 'WC_DOING_AJAX' ) ) {
-                define( 'WC_DOING_AJAX', true );
+            if (!defined('WC_DOING_AJAX')) {
+                define('WC_DOING_AJAX', true);
             }
             // Turn off display_errors during AJAX events to prevent malformed JSON
-            if ( ! WP_DEBUG || ( WP_DEBUG && ! WP_DEBUG_DISPLAY ) ) {
-                /** @scrutinizer ignore-unhandled */ @ini_set( 'display_errors', 0 );
+            if (!WP_DEBUG || (WP_DEBUG && !WP_DEBUG_DISPLAY)) {
+                /** @scrutinizer ignore-unhandled */ @ini_set('display_errors', 0);
             }
             $GLOBALS['wpdb']->hide_errors();
         }
@@ -37,24 +37,24 @@ 
     public static function do_wpinv_ajax() {
         global $wp_query;
 
-        if ( !empty( $_GET['wpinv-ajax'] ) ) {
-            $wp_query->set( 'wpinv-ajax', sanitize_text_field( $_GET['wpinv-ajax'] ) );
+        if (!empty($_GET['wpinv-ajax'])) {
+            $wp_query->set('wpinv-ajax', sanitize_text_field($_GET['wpinv-ajax']));
         }
 
-        if ( $action = $wp_query->get( 'wpinv-ajax' ) ) {
+        if ($action = $wp_query->get('wpinv-ajax')) {
             self::wpinv_ajax_headers();
-            do_action( 'wpinv_ajax_' . sanitize_text_field( $action ) );
+            do_action('wpinv_ajax_' . sanitize_text_field($action));
             die();
         }
     }
     
     private static function wpinv_ajax_headers() {
         send_origin_headers();
-        /** @scrutinizer ignore-unhandled */ @header( 'Content-Type: text/html; charset=' . get_option( 'blog_charset' ) );
-        /** @scrutinizer ignore-unhandled */ @header( 'X-Robots-Tag: noindex' );
+        /** @scrutinizer ignore-unhandled */ @header('Content-Type: text/html; charset=' . get_option('blog_charset'));
+        /** @scrutinizer ignore-unhandled */ @header('X-Robots-Tag: noindex');
         send_nosniff_header();
         nocache_headers();
-        status_header( 200 );
+        status_header(200);
     }
     
     public static function add_ajax_events() {
@@ -78,39 +78,39 @@ 
             'buy_items' => true,
         );
 
-        foreach ( $ajax_events as $ajax_event => $nopriv ) {
-            add_action( 'wp_ajax_wpinv_' . $ajax_event, array( __CLASS__, $ajax_event ) );
+        foreach ($ajax_events as $ajax_event => $nopriv) {
+            add_action('wp_ajax_wpinv_' . $ajax_event, array(__CLASS__, $ajax_event));
             
-            if ( !defined( 'WPI_AJAX_' . strtoupper( $nopriv ) ) ) {
-                define( 'WPI_AJAX_' . strtoupper( $nopriv ), 1 );
+            if (!defined('WPI_AJAX_' . strtoupper($nopriv))) {
+                define('WPI_AJAX_' . strtoupper($nopriv), 1);
             }
 
-            if ( $nopriv ) {
-                add_action( 'wp_ajax_nopriv_wpinv_' . $ajax_event, array( __CLASS__, $ajax_event ) );
+            if ($nopriv) {
+                add_action('wp_ajax_nopriv_wpinv_' . $ajax_event, array(__CLASS__, $ajax_event));
 
-                add_action( 'wpinv_ajax_' . $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);
             }
         }
 
@@ -118,16 +118,16 @@ 
     }
 
     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();
@@ -140,8 +140,8 @@ 
     }
     
     public static function checkout() {
-        if ( ! defined( 'WPINV_CHECKOUT' ) ) {
-            define( 'WPINV_CHECKOUT', true );
+        if (!defined('WPINV_CHECKOUT')) {
+            define('WPINV_CHECKOUT', true);
         }
 
         wpinv_process_checkout();
@@ -150,53 +150,53 @@ 
     
     public static function add_invoice_item() {
         global $wpi_userID, $wpinv_ip_address_country;
-        check_ajax_referer( 'invoice-item', '_nonce' );
-        if ( !wpinv_current_user_can_manage_invoicing() ) {
+        check_ajax_referer('invoice-item', '_nonce');
+        if (!wpinv_current_user_can_manage_invoicing()) {
             die(-1);
         }
         
-        $item_id    = sanitize_text_field( $_POST['item_id'] );
-        $invoice_id = absint( $_POST['invoice_id'] );
+        $item_id    = sanitize_text_field($_POST['item_id']);
+        $invoice_id = absint($_POST['invoice_id']);
         
-        if ( !is_numeric( $invoice_id ) || !is_numeric( $item_id ) ) {
+        if (!is_numeric($invoice_id) || !is_numeric($item_id)) {
             die();
         }
         
-        $invoice    = wpinv_get_invoice( $invoice_id );
-        if ( empty( $invoice ) ) {
+        $invoice = wpinv_get_invoice($invoice_id);
+        if (empty($invoice)) {
             die();
         }
         
-        if ( $invoice->is_paid() || $invoice->is_refunded() ) {
+        if ($invoice->is_paid() || $invoice->is_refunded()) {
             die(); // Don't allow modify items for paid invoice.
         }
         
-        if ( !empty( $_POST['user_id'] ) ) {
-            $wpi_userID = absint( $_POST['user_id'] ); 
+        if (!empty($_POST['user_id'])) {
+            $wpi_userID = absint($_POST['user_id']); 
         }
 
-        $item = new WPInv_Item( $item_id );
-        if ( !( !empty( $item ) && $item->post_type == 'wpi_item' ) ) {
+        $item = new WPInv_Item($item_id);
+        if (!(!empty($item) && $item->post_type == 'wpi_item')) {
             die();
         }
         
         // Validate item before adding to invoice because recurring item must be paid individually.
-        if ( !empty( $invoice->cart_details ) ) {
+        if (!empty($invoice->cart_details)) {
             $valid = true;
             
-            if ( $recurring_item = $invoice->get_recurring() ) {
-                if ( $recurring_item != $item_id ) {
+            if ($recurring_item = $invoice->get_recurring()) {
+                if ($recurring_item != $item_id) {
                     $valid = false;
                 }
-            } else if ( wpinv_is_recurring_item( $item_id ) ) {
+            } else if (wpinv_is_recurring_item($item_id)) {
                 $valid = false;
             }
             
-            if ( !$valid ) {
+            if (!$valid) {
                 $response               = array();
                 $response['success']    = false;
-                $response['msg']        = __( 'You can not add item because recurring item must be paid individually!', 'invoicing' );
-                wp_send_json( $response );
+                $response['msg']        = __('You can not add item because recurring item must be paid individually!', 'invoicing');
+                wp_send_json($response);
             }
         }
         
@@ -204,11 +204,11 @@ 
         
         $data                   = array();
         $data['invoice_id']     = $invoice_id;
-        $data['cart_discounts'] = $invoice->get_discounts( true );
+        $data['cart_discounts'] = $invoice->get_discounts(true);
         
-        wpinv_set_checkout_session( $data );
+        wpinv_set_checkout_session($data);
         
-        $quantity = wpinv_item_quantities_enabled() && !empty($_POST['qty']) && (int)$_POST['qty'] > 0 ? (int)$_POST['qty'] : 1;
+        $quantity = wpinv_item_quantities_enabled() && !empty($_POST['qty']) && (int) $_POST['qty'] > 0 ? (int) $_POST['qty'] : 1;
 
         $args = array(
             'id'            => $item_id,
@@ -221,21 +221,21 @@ 
             'fees'          => array()
         );
 
-        $invoice->add_item( $item_id, $args );
+        $invoice->add_item($item_id, $args);
         $invoice->save();
         
-        if ( empty( $_POST['country'] ) ) {
+        if (empty($_POST['country'])) {
             $_POST['country'] = !empty($invoice->country) ? $invoice->country : wpinv_get_default_country();
         }
-        if ( empty( $_POST['state'] ) ) {
+        if (empty($_POST['state'])) {
             $_POST['state'] = $invoice->state;
         }
          
-        $invoice->country   = sanitize_text_field( $_POST['country'] );
-        $invoice->state     = sanitize_text_field( $_POST['state'] );
+        $invoice->country   = sanitize_text_field($_POST['country']);
+        $invoice->state     = sanitize_text_field($_POST['state']);
         
-        $invoice->set( 'country', sanitize_text_field( $_POST['country'] ) );
-        $invoice->set( 'state', sanitize_text_field( $_POST['state'] ) );
+        $invoice->set('country', sanitize_text_field($_POST['country']));
+        $invoice->set('state', sanitize_text_field($_POST['state']));
         
         $wpinv_ip_address_country = $invoice->country;
 
@@ -243,7 +243,7 @@ 
         
         $response                       = array();
         $response['success']            = true;
-        $response['data']['items']      = wpinv_admin_get_line_items( $invoice );
+        $response['data']['items']      = wpinv_admin_get_line_items($invoice);
         $response['data']['subtotal']   = $invoice->get_subtotal();
         $response['data']['subtotalf']  = $invoice->get_subtotal(true);
         $response['data']['tax']        = $invoice->get_tax();
@@ -255,41 +255,41 @@ 
         
         wpinv_set_checkout_session($checkout_session);
         
-        wp_send_json( $response );
+        wp_send_json($response);
     }
 
 
     public static function remove_invoice_item() {
         global $wpi_userID, $wpinv_ip_address_country;
         
-        check_ajax_referer( 'invoice-item', '_nonce' );
-        if ( !wpinv_current_user_can_manage_invoicing() ) {
+        check_ajax_referer('invoice-item', '_nonce');
+        if (!wpinv_current_user_can_manage_invoicing()) {
             die(-1);
         }
         
-        $item_id    = sanitize_text_field( $_POST['item_id'] );
-        $invoice_id = absint( $_POST['invoice_id'] );
-        $cart_index = isset( $_POST['index'] ) && $_POST['index'] >= 0 ? $_POST['index'] : false;
+        $item_id    = sanitize_text_field($_POST['item_id']);
+        $invoice_id = absint($_POST['invoice_id']);
+        $cart_index = isset($_POST['index']) && $_POST['index'] >= 0 ? $_POST['index'] : false;
         
-        if ( !is_numeric( $invoice_id ) || !is_numeric( $item_id ) ) {
+        if (!is_numeric($invoice_id) || !is_numeric($item_id)) {
             die();
         }
 
-        $invoice    = wpinv_get_invoice( $invoice_id );
-        if ( empty( $invoice ) ) {
+        $invoice = wpinv_get_invoice($invoice_id);
+        if (empty($invoice)) {
             die();
         }
         
-        if ( $invoice->is_paid() || $invoice->is_refunded() ) {
+        if ($invoice->is_paid() || $invoice->is_refunded()) {
             die(); // Don't allow modify items for paid invoice.
         }
         
-        if ( !empty( $_POST['user_id'] ) ) {
-            $wpi_userID = absint( $_POST['user_id'] ); 
+        if (!empty($_POST['user_id'])) {
+            $wpi_userID = absint($_POST['user_id']); 
         }
 
-        $item       = new WPInv_Item( $item_id );
-        if ( !( !empty( $item ) && $item->post_type == 'wpi_item' ) ) {
+        $item = new WPInv_Item($item_id);
+        if (!(!empty($item) && $item->post_type == 'wpi_item')) {
             die();
         }
         
@@ -297,9 +297,9 @@ 
         
         $data                   = array();
         $data['invoice_id']     = $invoice_id;
-        $data['cart_discounts'] = $invoice->get_discounts( true );
+        $data['cart_discounts'] = $invoice->get_discounts(true);
         
-        wpinv_set_checkout_session( $data );
+        wpinv_set_checkout_session($data);
 
         $args = array(
             'id'         => $item_id,
@@ -307,21 +307,21 @@ 
             'cart_index' => $cart_index
         );
 
-        $invoice->remove_item( $item_id, $args );
+        $invoice->remove_item($item_id, $args);
         $invoice->save();
         
-        if ( empty( $_POST['country'] ) ) {
+        if (empty($_POST['country'])) {
             $_POST['country'] = !empty($invoice->country) ? $invoice->country : wpinv_get_default_country();
         }
-        if ( empty( $_POST['state'] ) ) {
+        if (empty($_POST['state'])) {
             $_POST['state'] = $invoice->state;
         }
          
-        $invoice->country   = sanitize_text_field( $_POST['country'] );
-        $invoice->state     = sanitize_text_field( $_POST['state'] );
+        $invoice->country   = sanitize_text_field($_POST['country']);
+        $invoice->state     = sanitize_text_field($_POST['state']);
         
-        $invoice->set( 'country', sanitize_text_field( $_POST['country'] ) );
-        $invoice->set( 'state', sanitize_text_field( $_POST['state'] ) );
+        $invoice->set('country', sanitize_text_field($_POST['country']));
+        $invoice->set('state', sanitize_text_field($_POST['state']));
         
         $wpinv_ip_address_country = $invoice->country;
         
@@ -329,7 +329,7 @@ 
         
         $response                       = array();
         $response['success']            = true;
-        $response['data']['items']      = wpinv_admin_get_line_items( $invoice );
+        $response['data']['items']      = wpinv_admin_get_line_items($invoice);
         $response['data']['subtotal']   = $invoice->get_subtotal();
         $response['data']['subtotalf']  = $invoice->get_subtotal(true);
         $response['data']['tax']        = $invoice->get_tax();
@@ -341,55 +341,55 @@ 
         
         wpinv_set_checkout_session($checkout_session);
         
-        wp_send_json( $response );
+        wp_send_json($response);
     }
     
     public static function create_invoice_item() {
-        check_ajax_referer( 'invoice-item', '_nonce' );
-        if ( !wpinv_current_user_can_manage_invoicing() ) {
+        check_ajax_referer('invoice-item', '_nonce');
+        if (!wpinv_current_user_can_manage_invoicing()) {
             die(-1);
         }
         
-        $invoice_id = absint( $_POST['invoice_id'] );
+        $invoice_id = absint($_POST['invoice_id']);
 
         // Find the item
-        if ( !is_numeric( $invoice_id ) ) {
+        if (!is_numeric($invoice_id)) {
             die();
         }        
         
-        $invoice     = wpinv_get_invoice( $invoice_id );
-        if ( empty( $invoice ) ) {
+        $invoice = wpinv_get_invoice($invoice_id);
+        if (empty($invoice)) {
             die();
         }
         
         // Validate item before adding to invoice because recurring item must be paid individually.
-        if ( !empty( $invoice->cart_details ) && $invoice->get_recurring() ) {
+        if (!empty($invoice->cart_details) && $invoice->get_recurring()) {
             $response               = array();
             $response['success']    = false;
-            $response['msg']        = __( 'You can not add item because recurring item must be paid individually!', 'invoicing' );
-            wp_send_json( $response );
+            $response['msg']        = __('You can not add item because recurring item must be paid individually!', 'invoicing');
+            wp_send_json($response);
         }        
         
-        $save_item = wp_unslash( $_POST['_wpinv_quick'] );
+        $save_item = wp_unslash($_POST['_wpinv_quick']);
         
         $meta               = array();
         $meta['type']       = !empty($save_item['type']) ? sanitize_text_field($save_item['type']) : 'custom';
-        $meta['price']      = !empty($save_item['price']) ? wpinv_sanitize_amount( $save_item['price'] ) : 0;
+        $meta['price']      = !empty($save_item['price']) ? wpinv_sanitize_amount($save_item['price']) : 0;
         $meta['vat_rule']   = !empty($save_item['vat_rule']) ? sanitize_text_field($save_item['vat_rule']) : 'digital';
         $meta['vat_class']  = !empty($save_item['vat_class']) ? sanitize_text_field($save_item['vat_class']) : '_standard';
         
         $data                   = array();
         $data['post_title']     = sanitize_text_field($save_item['name']);
         $data['post_status']    = 'publish';
-        $data['post_excerpt']   = ! empty( $save_item['excerpt'] ) ? wp_kses_post( $save_item['excerpt'] ) : '';
+        $data['post_excerpt']   = !empty($save_item['excerpt']) ? wp_kses_post($save_item['excerpt']) : '';
         $data['meta']           = $meta;
         
         $item = new WPInv_Item();
-        $item->create( $data );
+        $item->create($data);
         
-        if ( !empty( $item ) ) {
+        if (!empty($item)) {
             $_POST['item_id']   = $item->ID;
-            $_POST['qty']       = !empty($save_item['qty']) && $save_item['qty'] > 0 ? (int)$save_item['qty'] : 1;
+            $_POST['qty']       = !empty($save_item['qty']) && $save_item['qty'] > 0 ? (int) $save_item['qty'] : 1;
             
             self::add_invoice_item();
         }
@@ -397,15 +397,15 @@ 
     }
     
     public static function get_billing_details() {
-        check_ajax_referer( 'get-billing-details', '_nonce' );
+        check_ajax_referer('get-billing-details', '_nonce');
         
-        if ( !wpinv_current_user_can_manage_invoicing() ) {
+        if (!wpinv_current_user_can_manage_invoicing()) {
             die(-1);
         }
 
-        $user_id            = (int)$_POST['user_id'];
+        $user_id            = (int) $_POST['user_id'];
         $billing_details    = wpinv_get_user_address($user_id);
-        $billing_details    = apply_filters( 'wpinv_fill_billing_details', $billing_details, $user_id );
+        $billing_details    = apply_filters('wpinv_fill_billing_details', $billing_details, $user_id);
         
         if (isset($billing_details['user_id'])) {
             unset($billing_details['user_id']);
@@ -419,20 +419,20 @@ 
         $response['success']                    = true;
         $response['data']['billing_details']    = $billing_details;
         
-        wp_send_json( $response );
+        wp_send_json($response);
     }
     
     public static function admin_recalculate_totals() {
         global $wpi_userID, $wpinv_ip_address_country;
         
-        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);
         }
         
-        $invoice_id = absint( $_POST['invoice_id'] );        
-        $invoice    = wpinv_get_invoice( $invoice_id );
-        if ( empty( $invoice ) ) {
+        $invoice_id = absint($_POST['invoice_id']);        
+        $invoice    = wpinv_get_invoice($invoice_id);
+        if (empty($invoice)) {
             die();
         }
         
@@ -440,23 +440,23 @@ 
         
         $data                   = array();
         $data['invoice_id']     = $invoice_id;
-        $data['cart_discounts'] = $invoice->get_discounts( true );
+        $data['cart_discounts'] = $invoice->get_discounts(true);
         
-        wpinv_set_checkout_session( $data );
+        wpinv_set_checkout_session($data);
         
-        if ( !empty( $_POST['user_id'] ) ) {
-            $wpi_userID = absint( $_POST['user_id'] ); 
+        if (!empty($_POST['user_id'])) {
+            $wpi_userID = absint($_POST['user_id']); 
         }
         
-        if ( empty( $_POST['country'] ) ) {
+        if (empty($_POST['country'])) {
             $_POST['country'] = !empty($invoice->country) ? $invoice->country : wpinv_get_default_country();
         }
             
-        $invoice->country = sanitize_text_field( $_POST['country'] );
-        $invoice->set( 'country', sanitize_text_field( $_POST['country'] ) );
-        if ( isset( $_POST['state'] ) ) {
-            $invoice->state = sanitize_text_field( $_POST['state'] );
-            $invoice->set( 'state', sanitize_text_field( $_POST['state'] ) );
+        $invoice->country = sanitize_text_field($_POST['country']);
+        $invoice->set('country', sanitize_text_field($_POST['country']));
+        if (isset($_POST['state'])) {
+            $invoice->state = sanitize_text_field($_POST['state']);
+            $invoice->set('state', sanitize_text_field($_POST['state']));
         }
         
         $wpinv_ip_address_country = $invoice->country;
@@ -465,7 +465,7 @@ 
         
         $response                       = array();
         $response['success']            = true;
-        $response['data']['items']      = wpinv_admin_get_line_items( $invoice );
+        $response['data']['items']      = wpinv_admin_get_line_items($invoice);
         $response['data']['subtotal']   = $invoice->get_subtotal();
         $response['data']['subtotalf']  = $invoice->get_subtotal(true);
         $response['data']['tax']        = $invoice->get_tax();
@@ -477,25 +477,25 @@ 
         
         wpinv_set_checkout_session($checkout_session);
         
-        wp_send_json( $response );
+        wp_send_json($response);
     }
     
     public static function admin_apply_discount() {
         global $wpi_userID;
         
-        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);
         }
         
-        $invoice_id = absint( $_POST['invoice_id'] );
-        $discount_code = sanitize_text_field( $_POST['code'] );
-        if ( empty( $invoice_id ) || empty( $discount_code ) ) {
+        $invoice_id = absint($_POST['invoice_id']);
+        $discount_code = sanitize_text_field($_POST['code']);
+        if (empty($invoice_id) || empty($discount_code)) {
             die();
         }
         
-        $invoice = wpinv_get_invoice( $invoice_id );
-        if ( empty( $invoice ) || ( !empty( $invoice ) && ( $invoice->is_paid() || $invoice->is_refunded() ) ) ) {
+        $invoice = wpinv_get_invoice($invoice_id);
+        if (empty($invoice) || (!empty($invoice) && ($invoice->is_paid() || $invoice->is_refunded()))) {
             die();
         }
         
@@ -503,49 +503,49 @@ 
         
         $data                   = array();
         $data['invoice_id']     = $invoice_id;
-        $data['cart_discounts'] = $invoice->get_discounts( true );
+        $data['cart_discounts'] = $invoice->get_discounts(true);
         
-        wpinv_set_checkout_session( $data );
+        wpinv_set_checkout_session($data);
         
         $response               = array();
         $response['success']    = false;
-        $response['msg']        = __( 'This discount is invalid.', 'invoicing' );
+        $response['msg']        = __('This discount is invalid.', 'invoicing');
         $response['data']['code'] = $discount_code;
         
-        if ( wpinv_is_discount_valid( $discount_code, $invoice->get_user_id() ) ) {
-            $discounts = wpinv_set_cart_discount( $discount_code );
+        if (wpinv_is_discount_valid($discount_code, $invoice->get_user_id())) {
+            $discounts = wpinv_set_cart_discount($discount_code);
             
             $response['success'] = true;
-            $response['msg'] = __( 'Discount has been applied successfully.', 'invoicing' );
-        }  else {
+            $response['msg'] = __('Discount has been applied successfully.', 'invoicing');
+        } else {
             $errors = wpinv_get_errors();
-            if ( !empty( $errors['wpinv-discount-error'] ) ) {
+            if (!empty($errors['wpinv-discount-error'])) {
                 $response['msg'] = $errors['wpinv-discount-error'];
             }
-            wpinv_unset_error( 'wpinv-discount-error' );
+            wpinv_unset_error('wpinv-discount-error');
         }
         
         wpinv_set_checkout_session($checkout_session);
         
-        wp_send_json( $response );
+        wp_send_json($response);
     }
     
     public static function admin_remove_discount() {
         global $wpi_userID;
         
-        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);
         }
         
-        $invoice_id = absint( $_POST['invoice_id'] );
-        $discount_code = sanitize_text_field( $_POST['code'] );
-        if ( empty( $invoice_id ) || empty( $discount_code ) ) {
+        $invoice_id = absint($_POST['invoice_id']);
+        $discount_code = sanitize_text_field($_POST['code']);
+        if (empty($invoice_id) || empty($discount_code)) {
             die();
         }
         
-        $invoice = wpinv_get_invoice( $invoice_id );
-        if ( empty( $invoice ) || ( !empty( $invoice ) && ( $invoice->is_paid() || $invoice->is_refunded() ) ) ) {
+        $invoice = wpinv_get_invoice($invoice_id);
+        if (empty($invoice) || (!empty($invoice) && ($invoice->is_paid() || $invoice->is_refunded()))) {
             die();
         }
         
@@ -553,38 +553,38 @@ 
         
         $data                   = array();
         $data['invoice_id']     = $invoice_id;
-        $data['cart_discounts'] = $invoice->get_discounts( true );
+        $data['cart_discounts'] = $invoice->get_discounts(true);
         
-        wpinv_set_checkout_session( $data );
+        wpinv_set_checkout_session($data);
         
         $response               = array();
         $response['success']    = false;
         $response['msg']        = NULL;
         
-        $discounts  = wpinv_unset_cart_discount( $discount_code );
+        $discounts = wpinv_unset_cart_discount($discount_code);
         $response['success'] = true;
-        $response['msg'] = __( 'Discount has been removed successfully.', 'invoicing' );
+        $response['msg'] = __('Discount has been removed successfully.', 'invoicing');
         
         wpinv_set_checkout_session($checkout_session);
         
-        wp_send_json( $response );
+        wp_send_json($response);
     }
     
     public static function check_email() {
-        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);
         }
         
-        $email = sanitize_text_field( $_POST['email'] );
+        $email = sanitize_text_field($_POST['email']);
         
         $response = array();
-        if ( is_email( $email ) && email_exists( $email ) && $user_data = get_user_by( 'email', $email ) ) {
+        if (is_email($email) && email_exists($email) && $user_data = get_user_by('email', $email)) {
             $user_id            = $user_data->ID;
             $user_login         = $user_data->user_login;
             $display_name       = $user_data->display_name ? $user_data->display_name : $user_login;
             $billing_details    = wpinv_get_user_address($user_id);
-            $billing_details    = apply_filters( 'wpinv_fill_billing_details', $billing_details, $user_id );
+            $billing_details    = apply_filters('wpinv_fill_billing_details', $billing_details, $user_id);
             
             if (isset($billing_details['user_id'])) {
                 unset($billing_details['user_id']);
@@ -600,54 +600,54 @@ 
             $response['data']['billing_details']    = $billing_details;
         }
         
-        wp_send_json( $response );
+        wp_send_json($response);
     }
     
     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);
         }
     }
     
     public static function apply_discount() {
         global $wpi_userID;
         
-        check_ajax_referer( 'wpinv-nonce', '_nonce' );
+        check_ajax_referer('wpinv-nonce', '_nonce');
         
         $response = array();
         
-        if ( isset( $_POST['code'] ) ) {
-            $discount_code = sanitize_text_field( $_POST['code'] );
+        if (isset($_POST['code'])) {
+            $discount_code = sanitize_text_field($_POST['code']);
 
             $response['success']        = false;
             $response['msg']            = '';
             $response['data']['code']   = $discount_code;
             
             $invoice = wpinv_get_invoice_cart();
-            if ( empty( $invoice->ID ) ) {
-                $response['msg'] = __( 'Invalid checkout request.', 'invoicing' );
-                wp_send_json( $response );
+            if (empty($invoice->ID)) {
+                $response['msg'] = __('Invalid checkout request.', 'invoicing');
+                wp_send_json($response);
             }
 
             $wpi_userID = $invoice->get_user_id();
 
-            if ( wpinv_is_discount_valid( $discount_code, $wpi_userID ) ) {
-                $discount       = wpinv_get_discount_by_code( $discount_code );
-                $discounts      = wpinv_set_cart_discount( $discount_code );
-                $amount         = wpinv_format_discount_rate( wpinv_get_discount_type( $discount->ID ), wpinv_get_discount_amount( $discount->ID ) );
-                $total          = wpinv_get_cart_total( null, $discounts );
-                $cart_totals    = wpinv_recalculate_tax( true );
+            if (wpinv_is_discount_valid($discount_code, $wpi_userID)) {
+                $discount       = wpinv_get_discount_by_code($discount_code);
+                $discounts      = wpinv_set_cart_discount($discount_code);
+                $amount         = wpinv_format_discount_rate(wpinv_get_discount_type($discount->ID), wpinv_get_discount_amount($discount->ID));
+                $total          = wpinv_get_cart_total(null, $discounts);
+                $cart_totals    = wpinv_recalculate_tax(true);
             
-                if ( !empty( $cart_totals ) ) {
+                if (!empty($cart_totals)) {
                     $response['success']        = true;
                     $response['data']           = $cart_totals;
                     $response['data']['code']   = $discount_code;
@@ -656,29 +656,29 @@ 
                 }
             } else {
                 $errors = wpinv_get_errors();
-                $response['msg']  = $errors['wpinv-discount-error'];
-                wpinv_unset_error( 'wpinv-discount-error' );
+                $response['msg'] = $errors['wpinv-discount-error'];
+                wpinv_unset_error('wpinv-discount-error');
             }
 
             // Allow for custom discount code handling
-            $response = apply_filters( 'wpinv_ajax_discount_response', $response );
+            $response = apply_filters('wpinv_ajax_discount_response', $response);
         }
         
-        wp_send_json( $response );
+        wp_send_json($response);
     }
     
     public static function remove_discount() {
-        check_ajax_referer( 'wpinv-nonce', '_nonce' );
+        check_ajax_referer('wpinv-nonce', '_nonce');
         
         $response = array();
         
-        if ( isset( $_POST['code'] ) ) {
-            $discount_code  = sanitize_text_field( $_POST['code'] );
-            $discounts      = wpinv_unset_cart_discount( $discount_code );
-            $total          = wpinv_get_cart_total( null, $discounts );
-            $cart_totals    = wpinv_recalculate_tax( true );
+        if (isset($_POST['code'])) {
+            $discount_code  = sanitize_text_field($_POST['code']);
+            $discounts      = wpinv_unset_cart_discount($discount_code);
+            $total          = wpinv_get_cart_total(null, $discounts);
+            $cart_totals    = wpinv_recalculate_tax(true);
             
-            if ( !empty( $cart_totals ) ) {
+            if (!empty($cart_totals)) {
                 $response['success']        = true;
                 $response['data']           = $cart_totals;
                 $response['data']['code']   = $discount_code;
@@ -687,10 +687,10 @@ 
             }
             
             // Allow for custom discount code handling
-            $response = apply_filters( 'wpinv_ajax_discount_response', $response );
+            $response = apply_filters('wpinv_ajax_discount_response', $response);
         }
         
-        wp_send_json( $response );
+        wp_send_json($response);
     }
 
     /**
@@ -702,59 +702,59 @@ 
         global $invoicing;
 
         // Check nonce.
-        if ( ! isset( $_POST['wpinv_payment_form'] ) || ! wp_verify_nonce( $_POST['wpinv_payment_form'], 'wpinv_payment_form' ) ) {
-            wp_send_json_error( __( 'Security checks failed.', 'invoicing' ) );
+        if (!isset($_POST['wpinv_payment_form']) || !wp_verify_nonce($_POST['wpinv_payment_form'], 'wpinv_payment_form')) {
+            wp_send_json_error(__('Security checks failed.', 'invoicing'));
         }
 
         // Prepare submitted data...
-        $data = wp_unslash( $_POST );
+        $data = wp_unslash($_POST);
 
         // ... form fields...
-        if ( empty( $data['form_id'] ) || 'publish' != get_post_status( $data['form_id'] ) ) {
-            wp_send_json_error( __( 'This payment form is no longer active.', 'invoicing' ) );
+        if (empty($data['form_id']) || 'publish' != get_post_status($data['form_id'])) {
+            wp_send_json_error(__('This payment form is no longer active.', 'invoicing'));
         }
 
-        if ( empty( $data['billing_email'] ) || ! is_email( $data['billing_email'] ) ) {
-            wp_send_json_error( __( 'Provide a valid billing email.', 'invoicing' ) );
+        if (empty($data['billing_email']) || !is_email($data['billing_email'])) {
+            wp_send_json_error(__('Provide a valid billing email.', 'invoicing'));
         }
 
         $prepared = array(
-            'billing_email'                    => sanitize_email( $data['billing_email'] ),
-            __( 'Billing Email', 'invoicing' ) => sanitize_email( $data['billing_email'] ),
-            __( 'Form Id', 'invoicing' )       => absint( $data['form_id'] ),
+            'billing_email'                    => sanitize_email($data['billing_email']),
+            __('Billing Email', 'invoicing') => sanitize_email($data['billing_email']),
+            __('Form Id', 'invoicing')       => absint($data['form_id']),
         );
 
-        $prepared['billing_email'] = sanitize_email( $data['billing_email'] );
+        $prepared['billing_email'] = sanitize_email($data['billing_email']);
 
-        $fields = $invoicing->form_elements->get_form_elements( $data['form_id'] );
+        $fields = $invoicing->form_elements->get_form_elements($data['form_id']);
 
         // ... and form items.
-        $items          = $invoicing->form_elements->get_form_items( $data['form_id'] );
+        $items          = $invoicing->form_elements->get_form_items($data['form_id']);
         $prepared_items = array();
 
-        if ( ! empty( $data['wpinv-items'] ) ) {
+        if (!empty($data['wpinv-items'])) {
 
-            $selected_items = wpinv_clean( $data['wpinv-items'] );
+            $selected_items = wpinv_clean($data['wpinv-items']);
 
-            foreach ( $items as $item ) {
+            foreach ($items as $item) {
 
-                if ( ! isset( $selected_items[ $item['id'] ] ) ) {
+                if (!isset($selected_items[$item['id']])) {
                     continue;
                 }
 
                 // Custom pricing.
-                if ( ! empty( $item['custom_price'] ) ) {
+                if (!empty($item['custom_price'])) {
 
-                    $minimum_price = wpinv_sanitize_amount( $item['minimum_price'] );
-                    $set_price     = wpinv_sanitize_amount( $selected_items[ $item['id'] ] );
+                    $minimum_price = wpinv_sanitize_amount($item['minimum_price']);
+                    $set_price     = wpinv_sanitize_amount($selected_items[$item['id']]);
 
-                    if ( $set_price < $minimum_price ) {
-                        wp_send_json_error( __( 'The provided amount is less than the minimum allowed value.', 'invoicing' ) );
+                    if ($set_price < $minimum_price) {
+                        wp_send_json_error(__('The provided amount is less than the minimum allowed value.', 'invoicing'));
                     }
 
                     $prepared_items[] = array(
                         'id'           =>$item['id'],
-                        'item_price'   => wpinv_sanitize_amount( $item['price'] ),
+                        'item_price'   => wpinv_sanitize_amount($item['price']),
                         'custom_price' => $set_price,
                         'name'         => $item['title'],
                     );
@@ -763,8 +763,8 @@ 
 
                     $prepared_items[] = array(
                         'id'           => $item['id'],
-                        'item_price'   => wpinv_sanitize_amount( $item['price'] ),
-                        'custom_price' => wpinv_sanitize_amount( $item['price'] ),
+                        'item_price'   => wpinv_sanitize_amount($item['price']),
+                        'custom_price' => wpinv_sanitize_amount($item['price']),
                         'name'         => $item['title'],
                     );
 
@@ -774,45 +774,45 @@ 
 
         } else {
 
-            wp_send_json_error( __( 'You have not selected any items.', 'invoicing' ) );
+            wp_send_json_error(__('You have not selected any items.', 'invoicing'));
 
         }
 
         // Are all required fields provided?
-        foreach ( $fields as $field ) {
+        foreach ($fields as $field) {
 
-            if ( ! empty( $field['premade'] ) ) {
+            if (!empty($field['premade'])) {
                 continue;
             }
 
-            if ( ! empty( $field['required'] ) && empty( $data[ $field['id'] ] ) ) {
-                wp_send_json_error( __( 'Some required fields have not been filled.', 'invoicing' ) );
+            if (!empty($field['required']) && empty($data[$field['id']])) {
+                wp_send_json_error(__('Some required fields have not been filled.', 'invoicing'));
             }
 
-            if ( isset( $data[ $field['id'] ] ) ) {
+            if (isset($data[$field['id']])) {
                 $label = $field['id'];
 
-                if ( isset( $field['label'] ) ) {
+                if (isset($field['label'])) {
                     $label = $field['label'];
                 }
 
-                $prepared[ wpinv_clean( $label ) ] = wpinv_clean( $data[ $field['id'] ] );
+                $prepared[wpinv_clean($label)] = wpinv_clean($data[$field['id']]);
             }
 
         }
         
-        $user = get_user_by( 'email', $prepared['billing_email'] );
+        $user = get_user_by('email', $prepared['billing_email']);
 
-        if ( empty( $user ) ) {
-            $user = wpinv_create_user( $prepared['billing_email'] );
+        if (empty($user)) {
+            $user = wpinv_create_user($prepared['billing_email']);
         }
 
-        if ( is_wp_error( $user ) ) {
-            wp_send_json_error( $user->get_error_message() );
+        if (is_wp_error($user)) {
+            wp_send_json_error($user->get_error_message());
         }
 
-        if ( is_numeric( $user ) ) {
-            $user = get_user_by( 'id', $user );
+        if (is_numeric($user)) {
+            $user = get_user_by('id', $user);
         }
 
         // Create the invoice.
@@ -826,18 +826,18 @@ 
             true
         );
 
-        if ( is_wp_error( $created ) ) {
-            wp_send_json_error( $created->get_error_message() );
+        if (is_wp_error($created)) {
+            wp_send_json_error($created->get_error_message());
         }
 
-        if ( empty( $created ) ) {
-            wp_send_json_error( __( 'Could not create your invoice.', 'invoicing' ) );
+        if (empty($created)) {
+            wp_send_json_error(__('Could not create your invoice.', 'invoicing'));
         }
 
-        unset( $prepared['billing_email'] );
-        update_post_meta( $created->ID, 'payment_form_data', $prepared );
+        unset($prepared['billing_email']);
+        update_post_meta($created->ID, 'payment_form_data', $prepared);
 
-        wp_send_json_success( $created->get_view_url( true ) );
+        wp_send_json_success($created->get_view_url(true));
 
     }
 
@@ -849,53 +849,53 @@ 
     public static function buy_items() {
         $user_id = get_current_user_id();
 
-        if ( empty( $user_id ) ) { // If not logged in then lets redirect to the login page
-            wp_send_json( array(
-                'success' => wp_login_url( wp_get_referer() )
-            ) );
+        if (empty($user_id)) { // If not logged in then lets redirect to the login page
+            wp_send_json(array(
+                'success' => wp_login_url(wp_get_referer())
+            ));
         } else {
             // Only check nonce if logged in as it could be cached when logged out.
-            if ( ! isset( $_POST['wpinv_buy_nonce'] ) || ! wp_verify_nonce( $_POST['wpinv_buy_nonce'], 'wpinv_buy_items' ) ) {
-                wp_send_json( array(
-                    'error' => __( 'Security checks failed.', 'invoicing' )
-                ) );
+            if (!isset($_POST['wpinv_buy_nonce']) || !wp_verify_nonce($_POST['wpinv_buy_nonce'], 'wpinv_buy_items')) {
+                wp_send_json(array(
+                    'error' => __('Security checks failed.', 'invoicing')
+                ));
                 wp_die();
             }
 
             // allow to set a custom price through post_id
             $items = $_POST['items'];
-            $related_post_id = isset( $_POST['post_id'] ) ? (int)$_POST['post_id'] : 0;
-            $custom_item_price = $related_post_id ? abs( get_post_meta( $related_post_id, '_wpi_custom_price', true ) ) : 0;
+            $related_post_id = isset($_POST['post_id']) ? (int) $_POST['post_id'] : 0;
+            $custom_item_price = $related_post_id ? abs(get_post_meta($related_post_id, '_wpi_custom_price', true)) : 0;
 
             $cart_items = array();
-            if ( $items ) {
-                $items = explode( ',', $items );
+            if ($items) {
+                $items = explode(',', $items);
 
-                foreach( $items as $item ) {
+                foreach ($items as $item) {
                     $item_id = $item;
                     $quantity = 1;
 
-                    if ( strpos( $item, '|' ) !== false ) {
-                        $item_parts = explode( '|', $item );
+                    if (strpos($item, '|') !== false) {
+                        $item_parts = explode('|', $item);
                         $item_id = $item_parts[0];
                         $quantity = $item_parts[1];
                     }
 
-                    if ( $item_id && $quantity ) {
+                    if ($item_id && $quantity) {
                         $cart_items_arr = array(
-                            'id'            => (int)$item_id,
-                            'quantity'      => (int)$quantity
+                            'id'            => (int) $item_id,
+                            'quantity'      => (int) $quantity
                         );
 
                         // If there is a related post id then add it to meta
-                        if ( $related_post_id ) {
+                        if ($related_post_id) {
                             $cart_items_arr['meta'] = array(
                                 'post_id'   => $related_post_id
                             );
                         }
 
                         // If there is a custom price then set it.
-                        if ( $custom_item_price ) {
+                        if ($custom_item_price) {
                             $cart_items_arr['custom_price'] = $custom_item_price;
                         }
 
@@ -911,37 +911,37 @@ 
              * @param int $related_post_id The related post id if any.
              * @since 1.0.0
              */
-            $cart_items = apply_filters( 'wpinv_buy_cart_items', $cart_items, $related_post_id );
+            $cart_items = apply_filters('wpinv_buy_cart_items', $cart_items, $related_post_id);
 
             // Make sure its not in the cart already, if it is then redirect to checkout.
             $cart_invoice = wpinv_get_invoice_cart();
 
-            if ( isset( $cart_invoice->items ) && !empty( $cart_invoice->items ) && !empty( $cart_items ) && serialize( $cart_invoice->items ) == serialize( $cart_items ) ) {
-                wp_send_json( array(
+            if (isset($cart_invoice->items) && !empty($cart_invoice->items) && !empty($cart_items) && serialize($cart_invoice->items) == serialize($cart_items)) {
+                wp_send_json(array(
                     'success' =>  $cart_invoice->get_checkout_payment_url()
-                ) );
+                ));
                 wp_die();
             }
 
             // Check if user has invoice with same items waiting to be paid.
-            $user_invoices = wpinv_get_users_invoices( $user_id , 10 , false , 'wpi-pending' );
-            if ( !empty( $user_invoices ) ) {
-                foreach( $user_invoices as $user_invoice ) {
+            $user_invoices = wpinv_get_users_invoices($user_id, 10, false, 'wpi-pending');
+            if (!empty($user_invoices)) {
+                foreach ($user_invoices as $user_invoice) {
                     $user_cart_details = array();
-                    $invoice  = wpinv_get_invoice( $user_invoice->ID );
+                    $invoice = wpinv_get_invoice($user_invoice->ID);
                     $cart_details = $invoice->get_cart_details();
 
-                    if ( !empty( $cart_details ) ) {
-                        foreach ( $cart_details as $invoice_item ) {
+                    if (!empty($cart_details)) {
+                        foreach ($cart_details as $invoice_item) {
                             $ii_arr = array();
-                            $ii_arr['id'] = (int)$invoice_item['id'];
-                            $ii_arr['quantity'] = (int)$invoice_item['quantity'];
+                            $ii_arr['id'] = (int) $invoice_item['id'];
+                            $ii_arr['quantity'] = (int) $invoice_item['quantity'];
 
-                            if (isset( $invoice_item['meta'] ) && !empty( $invoice_item['meta'] ) ) {
+                            if (isset($invoice_item['meta']) && !empty($invoice_item['meta'])) {
                                 $ii_arr['meta'] = $invoice_item['meta'];
                             }
 
-                            if ( isset( $invoice_item['custom_price'] ) && !empty( $invoice_item['custom_price'] ) ) {
+                            if (isset($invoice_item['custom_price']) && !empty($invoice_item['custom_price'])) {
                                 $ii_arr['custom_price'] = $invoice_item['custom_price'];
                             }
 
@@ -949,17 +949,17 @@ 
                         }
                     }
 
-                    if ( !empty( $user_cart_details ) && serialize( $cart_items ) == serialize( $user_cart_details ) ) {
-                        wp_send_json( array(
+                    if (!empty($user_cart_details) && serialize($cart_items) == serialize($user_cart_details)) {
+                        wp_send_json(array(
                             'success' =>  $invoice->get_checkout_payment_url()
-                        ) );
+                        ));
                         wp_die();
                     }
                 }
             }
 
             // Create invoice and send user to checkout
-            if ( !empty( $cart_items ) ) {
+            if (!empty($cart_items)) {
                 $invoice_data = array(
                     'status'        =>  'wpi-pending',
                     'created_via'   =>  'wpi',
@@ -967,21 +967,21 @@ 
                     'cart_details'  =>  $cart_items,
                 );
 
-                $invoice = wpinv_insert_invoice( $invoice_data, true );
+                $invoice = wpinv_insert_invoice($invoice_data, true);
 
-                if ( !empty( $invoice ) && isset( $invoice->ID ) ) {
-                    wp_send_json( array(
+                if (!empty($invoice) && isset($invoice->ID)) {
+                    wp_send_json(array(
                         'success' =>  $invoice->get_checkout_payment_url()
-                    ) );
+                    ));
                 } else {
-                    wp_send_json( array(
-                        'error' => __( 'Invoice failed to create', 'invoicing' )
-                    ) );
+                    wp_send_json(array(
+                        'error' => __('Invoice failed to create', 'invoicing')
+                    ));
                 }
             } else {
-                wp_send_json( array(
-                    'error' => __( 'Items not valid.', 'invoicing' )
-                ) );
+                wp_send_json(array(
+                    'error' => __('Items not valid.', 'invoicing')
+                ));
             }
         }
 

includes/wpinv-user-functions.php

Indentation +20 added lines, -20 removed lines

@@ -159,11 +159,11 @@ 
  */
 function wpinv_get_capability( $capalibilty = 'manage_invoicing' ) {
 
-	if ( current_user_can( 'manage_options' ) ) {
-		return 'manage_options';
-	};
+    if ( current_user_can( 'manage_options' ) ) {
+        return 'manage_options';
+    };
 
-	return $capalibilty;
+    return $capalibilty;
 }
 
 /**
@@ -185,11 +185,11 @@ 
 function wpinv_create_user( $email ) {
 
     // Prepare user values.
-	$args = array(
-		'user_login' => wpinv_generate_user_name( $email ),
-		'user_pass'  => wp_generate_password(),
-		'user_email' => $email,
-		'role'       => 'subscriber',
+    $args = array(
+        'user_login' => wpinv_generate_user_name( $email ),
+        'user_pass'  => wp_generate_password(),
+        'user_email' => $email,
+        'role'       => 'subscriber',
     );
         
     return wp_insert_user( $args );
@@ -205,20 +205,20 @@ 
 function wpinv_generate_user_name( $prefix = '' ) {
 
     // If prefix is an email, retrieve the part before the email.
-	$prefix = strtok( $prefix, '@' );
+    $prefix = strtok( $prefix, '@' );
 
-	// Trim to 4 characters max.
-	$prefix = sanitize_user( substr( $prefix, 0, 4 ) );
+    // Trim to 4 characters max.
+    $prefix = sanitize_user( substr( $prefix, 0, 4 ) );
 
-	$illegal_logins = (array) apply_filters( 'illegal_user_logins', array() );
-	if ( empty( $prefix ) || in_array( strtolower( $prefix ), array_map( 'strtolower', $illegal_logins ), true ) ) {
-		$prefix = 'paywp';
-	}
+    $illegal_logins = (array) apply_filters( 'illegal_user_logins', array() );
+    if ( empty( $prefix ) || in_array( strtolower( $prefix ), array_map( 'strtolower', $illegal_logins ), true ) ) {
+        $prefix = 'paywp';
+    }
 
-	$username = $prefix . '_' . zeroise( wp_rand( 0, 9999 ), 4 );
-	if ( username_exists( $username ) ) {
-		return wpinv_generate_user_name( $username );
-	}
+    $username = $prefix . '_' . zeroise( wp_rand( 0, 9999 ), 4 );
+    if ( username_exists( $username ) ) {
+        return wpinv_generate_user_name( $username );
+    }
 
     return $username;
 }

Spacing +67 added lines, -67 removed lines

@@ -1,22 +1,22 @@ 
 <?php
 // Exit if accessed directly
-if ( ! defined( 'ABSPATH' ) ) exit;
+if (!defined('ABSPATH')) exit;
 
-function wpinv_get_users_invoices( $user = 0, $number = 20, $pagination = false, $status = 'publish', $orderby = 'ID', $order = 'DESC' ) {
-    if ( empty( $user ) ) {
+function wpinv_get_users_invoices($user = 0, $number = 20, $pagination = false, $status = 'publish', $orderby = 'ID', $order = 'DESC') {
+    if (empty($user)) {
         $user = get_current_user_id();
     }
 
-    if ( empty( $user ) ) {
+    if (empty($user)) {
         return false;
     }
 
-    $args = apply_filters( 'wpinv_get_users_invoices_args', array( 'user' => $user, 'limit' => $number, 'status' => $status, 'paginate' => $pagination, 'orderby' => $orderby, 'order' => $order ) );
+    $args = apply_filters('wpinv_get_users_invoices_args', array('user' => $user, 'limit' => $number, 'status' => $status, 'paginate' => $pagination, 'orderby' => $orderby, 'order' => $order));
     
-    return wpinv_get_invoices( $args );
+    return wpinv_get_invoices($args);
 }
 
-function wpinv_dropdown_users( $args = '' ) {
+function wpinv_dropdown_users($args = '') {
     $defaults = array(
         'show_option_all' => '', 'show_option_none' => '', 'hide_if_only_one_author' => '',
         'orderby' => 'display_name', 'order' => 'ASC',
@@ -27,18 +27,18 @@ 
         'option_none_value' => -1
     );
 
-    $defaults['selected'] = is_author() ? get_query_var( 'author' ) : 0;
+    $defaults['selected'] = is_author() ? get_query_var('author') : 0;
 
-    $r = wp_parse_args( $args, $defaults );
+    $r = wp_parse_args($args, $defaults);
 
-    $query_args = wp_array_slice_assoc( $r, array( 'blog_id', 'include', 'exclude', 'orderby', 'order', 'who' ) );
+    $query_args = wp_array_slice_assoc($r, array('blog_id', 'include', 'exclude', 'orderby', 'order', 'who'));
 
-    $fields = array( 'ID', 'user_login', 'user_email' );
+    $fields = array('ID', 'user_login', 'user_email');
 
-    $show = ! empty( $r['show'] ) ? $r['show'] : 'display_name';
-    if ( 'display_name_with_login' === $show ) {
+    $show = !empty($r['show']) ? $r['show'] : 'display_name';
+    if ('display_name_with_login' === $show) {
         $fields[] = 'display_name';
-    } else if ( 'display_name_with_email' === $show ) {
+    } else if ('display_name_with_email' === $show) {
         $fields[] = 'display_name';
     } else {
         $fields[] = $show;
@@ -50,99 +50,99 @@ 
     $show_option_none = $r['show_option_none'];
     $option_none_value = $r['option_none_value'];
 
-    $query_args = apply_filters( 'wpinv_dropdown_users_args', $query_args, $r );
+    $query_args = apply_filters('wpinv_dropdown_users_args', $query_args, $r);
 
-    $users = get_users( $query_args );
+    $users = get_users($query_args);
 
     $output = '';
-    if ( ! empty( $users ) && ( empty( $r['hide_if_only_one_author'] ) || count( $users ) > 1 ) ) {
-        $name = esc_attr( $r['name'] );
-        if ( $r['multi'] && ! $r['id'] ) {
+    if (!empty($users) && (empty($r['hide_if_only_one_author']) || count($users) > 1)) {
+        $name = esc_attr($r['name']);
+        if ($r['multi'] && !$r['id']) {
             $id = '';
         } else {
-            $id = $r['id'] ? " id='" . esc_attr( $r['id'] ) . "'" : " id='$name'";
+            $id = $r['id'] ? " id='" . esc_attr($r['id']) . "'" : " id='$name'";
         }
         $output = "<select name='{$name}'{$id} class='" . $r['class'] . "'>\n";
 
-        if ( $show_option_all ) {
+        if ($show_option_all) {
             $output .= "\t<option value='0'>$show_option_all</option>\n";
         }
 
-        if ( $show_option_none ) {
-            $_selected = selected( $option_none_value, $r['selected'], false );
-            $output .= "\t<option value='" . esc_attr( $option_none_value ) . "'$_selected>$show_option_none</option>\n";
+        if ($show_option_none) {
+            $_selected = selected($option_none_value, $r['selected'], false);
+            $output .= "\t<option value='" . esc_attr($option_none_value) . "'$_selected>$show_option_none</option>\n";
         }
 
-        if ( $r['include_selected'] && ( $r['selected'] > 0 ) ) {
+        if ($r['include_selected'] && ($r['selected'] > 0)) {
             $found_selected = false;
             $r['selected'] = (int) $r['selected'];
-            foreach ( (array) $users as $user ) {
+            foreach ((array) $users as $user) {
                 $user->ID = (int) $user->ID;
-                if ( $user->ID === $r['selected'] ) {
+                if ($user->ID === $r['selected']) {
                     $found_selected = true;
                 }
             }
 
-            if ( ! $found_selected ) {
-                $users[] = get_userdata( $r['selected'] );
+            if (!$found_selected) {
+                $users[] = get_userdata($r['selected']);
             }
         }
 
-        foreach ( (array) $users as $user ) {
-            if ( 'display_name_with_login' === $show ) {
+        foreach ((array) $users as $user) {
+            if ('display_name_with_login' === $show) {
                 /* translators: 1: display name, 2: user_login */
-                $display = sprintf( _x( '%1$s (%2$s)', 'user dropdown' ), $user->display_name, $user->user_login );
-            } elseif ( 'display_name_with_email' === $show ) {
+                $display = sprintf(_x('%1$s (%2$s)', 'user dropdown'), $user->display_name, $user->user_login);
+            } elseif ('display_name_with_email' === $show) {
                 /* translators: 1: display name, 2: user_email */
-                if ( $user->display_name == $user->user_email ) {
+                if ($user->display_name == $user->user_email) {
                     $display = $user->display_name;
                 } else {
-                    $display = sprintf( _x( '%1$s (%2$s)', 'user dropdown' ), $user->display_name, $user->user_email );
+                    $display = sprintf(_x('%1$s (%2$s)', 'user dropdown'), $user->display_name, $user->user_email);
                 }
-            } elseif ( ! empty( $user->$show ) ) {
+            } elseif (!empty($user->$show)) {
                 $display = $user->$show;
             } else {
                 $display = '(' . $user->user_login . ')';
             }
 
-            $_selected = selected( $user->ID, $r['selected'], false );
-            $output .= "\t<option value='$user->ID'$_selected>" . esc_html( $display ) . "</option>\n";
+            $_selected = selected($user->ID, $r['selected'], false);
+            $output .= "\t<option value='$user->ID'$_selected>" . esc_html($display) . "</option>\n";
         }
 
         $output .= "</select>";
     }
 
-    $html = apply_filters( 'wpinv_dropdown_users', $output );
+    $html = apply_filters('wpinv_dropdown_users', $output);
 
-    if ( $r['echo'] ) {
+    if ($r['echo']) {
         echo $html;
     }
     return $html;
 }
 
-function wpinv_guest_redirect( $redirect_to, $user_id = 0 ) {
-    if ( (int)wpinv_get_option( 'guest_checkout' ) && $user_id > 0 ) {
-        wpinv_login_user( $user_id );
+function wpinv_guest_redirect($redirect_to, $user_id = 0) {
+    if ((int) wpinv_get_option('guest_checkout') && $user_id > 0) {
+        wpinv_login_user($user_id);
     } else {
-        $redirect_to = wp_login_url( $redirect_to );
+        $redirect_to = wp_login_url($redirect_to);
     }
     
-    $redirect_to = apply_filters( 'wpinv_invoice_link_guest_redirect', $redirect_to, $user_id );
+    $redirect_to = apply_filters('wpinv_invoice_link_guest_redirect', $redirect_to, $user_id);
     
-    wp_redirect( $redirect_to );
+    wp_redirect($redirect_to);
 }
 
-function wpinv_login_user( $user_id ) {
-    if ( is_user_logged_in() ) {
+function wpinv_login_user($user_id) {
+    if (is_user_logged_in()) {
         return true;
     }
     
-    $user = get_user_by( 'id', $user_id );
+    $user = get_user_by('id', $user_id);
     
-    if ( !empty( $user ) && !is_wp_error( $user ) && !empty( $user->user_login ) ) {
-        wp_set_current_user( $user_id, $user->user_login );
-        wp_set_auth_cookie( $user_id );
-        do_action( 'wp_login', $user->user_login );
+    if (!empty($user) && !is_wp_error($user) && !empty($user->user_login)) {
+        wp_set_current_user($user_id, $user->user_login);
+        wp_set_auth_cookie($user_id);
+        do_action('wp_login', $user->user_login);
         
         return true;
     }
@@ -157,9 +157,9 @@ 
  * @return string capability to check against
  * @param string $capalibilty Optional. The alternative capability to check against.
  */
-function wpinv_get_capability( $capalibilty = 'manage_invoicing' ) {
+function wpinv_get_capability($capalibilty = 'manage_invoicing') {
 
-	if ( current_user_can( 'manage_options' ) ) {
+	if (current_user_can('manage_options')) {
 		return 'manage_options';
 	};
 
@@ -173,7 +173,7 @@ 
  * @return bool
  */
 function wpinv_current_user_can_manage_invoicing() {
-    return current_user_can( wpinv_get_capability() );
+    return current_user_can(wpinv_get_capability());
 }
 
 /**
@@ -182,17 +182,17 @@ 
  * @since 1.0.19
  * @return int|WP_Error
  */
-function wpinv_create_user( $email ) {
+function wpinv_create_user($email) {
 
     // Prepare user values.
 	$args = array(
-		'user_login' => wpinv_generate_user_name( $email ),
+		'user_login' => wpinv_generate_user_name($email),
 		'user_pass'  => wp_generate_password(),
 		'user_email' => $email,
 		'role'       => 'subscriber',
     );
         
-    return wp_insert_user( $args );
+    return wp_insert_user($args);
 
 }
 
@@ -202,22 +202,22 @@ 
  * @since 1.0.19
  * @return bool|WP_User
  */
-function wpinv_generate_user_name( $prefix = '' ) {
+function wpinv_generate_user_name($prefix = '') {
 
     // If prefix is an email, retrieve the part before the email.
-	$prefix = strtok( $prefix, '@' );
+	$prefix = strtok($prefix, '@');
 
 	// Trim to 4 characters max.
-	$prefix = sanitize_user( substr( $prefix, 0, 4 ) );
+	$prefix = sanitize_user(substr($prefix, 0, 4));
 
-	$illegal_logins = (array) apply_filters( 'illegal_user_logins', array() );
-	if ( empty( $prefix ) || in_array( strtolower( $prefix ), array_map( 'strtolower', $illegal_logins ), true ) ) {
+	$illegal_logins = (array) apply_filters('illegal_user_logins', array());
+	if (empty($prefix) || in_array(strtolower($prefix), array_map('strtolower', $illegal_logins), true)) {
 		$prefix = 'paywp';
 	}
 
-	$username = $prefix . '_' . zeroise( wp_rand( 0, 9999 ), 4 );
-	if ( username_exists( $username ) ) {
-		return wpinv_generate_user_name( $username );
+	$username = $prefix . '_' . zeroise(wp_rand(0, 9999), 4);
+	if (username_exists($username)) {
+		return wpinv_generate_user_name($username);
 	}
 
     return $username;