1 <?php
 2 
 3 /**
 4  * AJAX Class
 5  *
 6  * @class    WC_POS_Ajax
 7  * @package  WooCommerce POS
 8  * @author   Paul Kilmurray <paul@kilbot.com.au>
 9  * @link     http://www.woopos.com.au
10  */
11 
12 namespace WC_POS;
13 
14 class Ajax {
15 
16   /**
17    * Constructor
18    */
19   public function __construct() {
20 
21     $ajax_events = array(
22       'toggle_legacy_server'  => '\WC_POS\Status'
23     );
24 
25     foreach ( $ajax_events as $ajax_event => $class ) {
26       // check_ajax_referer
27       add_action( 'wp_ajax_wc_pos_' . $ajax_event, array( $this, 'check_ajax_referer' ), 1 );
28       // trigger method
29       add_action( 'wp_ajax_wc_pos_' . $ajax_event, array( $class, $ajax_event ) );
30     }
31   }
32 
33   /**
34    * Verifies the AJAX request
35    */
36   static public function check_ajax_referer(){
37     $pass = check_ajax_referer( PLUGIN_NAME, 'security', false );
38     if(!$pass){
39       $result = new \WP_Error(
40         'woocommerce_pos_invalid_nonce',
41         __( 'Invalid security nonce', 'woocommerce-pos' ),
42         array( 'status' => 401 )
43       );
44       self::response($result);
45     }
46   }
47 
48 
49   /**
50    * The below functions closely resemble output from the WC REST API
51    * This keeps response handling in the POS somewhat consistent
52    * between API and AJAX calls
53    *
54    * Output the result
55    * @param $result
56    */
57   static public function response($result){
58     header( 'Content-Type: application/json; charset=utf-8' );
59     if (is_wp_error($result)) {
60       $data = $result->get_error_data();
61       if ( is_array( $data ) && isset( $data['status'] ) ) {
62         status_header( $data['status'] );
63       }
64       $result = self::error_to_array( $result );
65     }
66     echo json_encode( $result );
67     die();
68   }
69   /**
70    * Convert wp_error to array
71    * @param $error
72    * @return array
73    */
74   static private function error_to_array( $error ) {
75     $errors = array();
76     foreach ( (array) $error->errors as $code => $messages ) {
77       foreach ( (array) $messages as $message ) {
78         $errors[] = array( 'code' => $code, 'message' => $message );
79       }
80     }
81     return array( 'errors' => $errors );
82   }
83 
84 }

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