<?php
/*
Snippet: Push notifications with WordApp
Author: Dave A Sargent
Author URI: http://app-developers.biz
Distributed under the GPLv2
*/
$device_token_arr[] = self::get_user_device_token($user_id);

$args['device_tokens'] = $device_token_arr;

sendPushNotification($args);


 function get_user_device_token($user_id)
 {
  if(!$user_id)return '';

  return get_user_meta( $user_id, 'wordapp_push_device_token', true);
 }




function sendPushNotification($args){
  if($args['device_tokens']){

     /* CLEAN UUID */
      $final_arr = array_chunk($args['device_tokens'],500);
      for($i=0;$i<count($final_arr);$i++){
    foreach($final_arr[$i] as $final_arrObj){
        if($final_arrObj && $final_arrObj['device_token']){
      $tokens = $final_arrObj['device_token'];
      $platform = $final_arrObj['platform'];
      if($final_arrObj['username']){ $args['username'] = $final_arrObj['username']; }
        }else{
      $tokens = $final_arrObj;
      $platform = 0;
        }


        $message = 'message to send here';
 		$title = sanitize_text_field($message);
 		$wadate = date('Y-m-d H:i:s');
 		$content = '';

  		$page =  array(
        'post_title'        => $title,
        'post_content'      => $content, //blank
        'post_status'      => 'publish',
        'post_type' => 'wa_pns_messages',
        'post_date'  => $wadate,
  		'post_date_gmt'  => $wadate,
        'post_author'      => '1'
  		);

        // Page doesn't exist, so lets add it
        $post_id = wp_insert_post( $page );


  		add_post_meta($post_id, '_wapn_message', 'no');


    $device_token_ids = array();
    foreach($args['device_tokens'] as $device_token){

  	$device_id =  get_page_by_title( $device_token, '', 'wa_pns' );

  	$device_token_ids[] =    $device_id->ID;
   	 }

  $jsonTitles = json_encode($device_token_ids, false);

    add_post_meta($post_id, '_wapn_message_users', $jsonTitles);

  	add_post_meta($post_id, '_wapn_message_users_count', count($final_arr));


    }
      }
  }
 }