add_action('save_post','save_post_callback', 10, 3);
function save_post_callback($post_id, $post, $update){
if ( 'site' == $post->post_type ) {
//Use this function to contact CW API
/**
 *
 * @param string $method GET|POST|PUT|DELETE
 * @param string $url relative URL for the call
 * @param string $accessToken Access token generated using OAuth Call
 * @param type $post Optional post data for the call
 * @return object Output from CW API
 */
function callCloudwaysAPI($method, $url, $accessToken, $post = [])
{
    $baseURL = 'https://api.cloudways.com/api/v1';
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);
    curl_setopt($ch, CURLOPT_URL, $baseURL . $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    //curl_setopt($ch, CURLOPT_HEADER, 1);
    //Set Authorization Header
    if ($accessToken) {
        curl_setopt($ch, CURLOPT_HTTPHEADER, ['Authorization: Bearer ' . $accessToken]);
    }
    //Set Post Parameters
    $encoded = '';
    if (count($post)) {
        foreach ($post as $name => $value) {
            $encoded .= urlencode($name) . '=' . urlencode($value) . '&';
        }
        $encoded = substr($encoded, 0, strlen($encoded) - 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $encoded);
        curl_setopt($ch, CURLOPT_POST, 1);
    }
    $output = curl_exec($ch);
    $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    if ($httpcode != '200') {
        die('An error occurred code: ' . $httpcode . ' output: ' . substr($output, 0, 10000));
    }
    curl_close($ch);
    return json_decode($output);
}
//Fetch Access Token
$tokenResponse = callCloudwaysAPI('POST', '/oauth/access_token', null
    , [
    'email' => 'test@domain.ocm'
    , 'api_key' => 'RANDOMKEY'
    ]);
$accessToken = $tokenResponse->access_token;
//Fetch Server List
$serverList = callCloudwaysAPI('GET', '/server', $accessToken);

//object to json
$json = json_encode($serverList);

//json to json array
$decode = json_decode($json);  // or json_decode($json, true); to set as array instead of object

// only use var_dump for debugging purposes var_dump($var);
//print_r($json);

//https://stackoverflow.com/questions/29308898/how-do-i-extract-data-from-json-with-php


function getAppsLabel($decode)
{
    $arr = array();
    for ($i = 0; $i < sizeof($decode->servers); $i++) {
        for ($j = 0; $j < sizeof($decode->servers[$i]->apps); $j++) {
            array_push($arr, $decode->servers[$i]->apps[$j]->label);
        }
    }
    return $arr;
}

function getAppsServerId($decode)
{
    $arr = array();
    for ($i = 0; $i < sizeof($decode->servers); $i++) {
        for ($j = 0; $j < sizeof($decode->servers[$i]->apps); $j++) {
            $arr[$decode->servers[$i]->apps[$j]->label] = $decode->servers[$i]->apps[$j]->server_id;
        }
    }
    return $arr;
}

function getAppsId($decode)
{
    $arr = array();
    for ($i = 0; $i < sizeof($decode->servers); $i++) {
        for ($j = 0; $j < sizeof($decode->servers[$i]->apps); $j++) {
            $arr[$decode->servers[$i]->apps[$j]->label] = $decode->servers[$i]->apps[$j]->id;
        }
    }
    return $arr;
}

function getAppsDatabaseName($decode)
{
    $arr = array();
    for ($i = 0; $i < sizeof($decode->servers); $i++) {
        for ($j = 0; $j < sizeof($decode->servers[$i]->apps); $j++) {
            $arr[$decode->servers[$i]->apps[$j]->label] = $decode->servers[$i]->apps[$j]->mysql_db_name;
        }
    }
    return $arr;
}

function getAppsDatabaseUser($decode)
{
    $arr = array();
    for ($i = 0; $i < sizeof($decode->servers); $i++) {
        for ($j = 0; $j < sizeof($decode->servers[$i]->apps); $j++) {
            $arr[$decode->servers[$i]->apps[$j]->label] = $decode->servers[$i]->apps[$j]->mysql_user;
        }
    }
    return $arr;
}

function getAppsDatabasePassword($decode)
{
    $arr = array();
    for ($i = 0; $i < sizeof($decode->servers); $i++) {
        for ($j = 0; $j < sizeof($decode->servers[$i]->apps); $j++) {
            $arr[$decode->servers[$i]->apps[$j]->label] = $decode->servers[$i]->apps[$j]->mysql_password;
        }
    }
    return $arr;
}

$app_label =  getAppsLabel($decode);
$app_id =  getAppsId($decode);
$app_serverid =  getAppsServerId($decode);
$app_databasename =  getAppsDatabaseName($decode);
$app_databaseuser =  getAppsDatabaseUser($decode);
$app_databasepassword =  getAppsDatabasePassword($decode);

        $primary_domain = get_field( "primary_domain" );
        $primary_domain = str_replace(array('http://', 'https://', 'www.'), '', $primary_domain); // Remove http:// https:// www.
        $primary_domain = rtrim($primary_domain, '/'); // Remove trailing slash
            update_field('app_id', $app_id[$primary_domain]);
            update_field('server_id', $app_serverid[$primary_domain]);
            update_field('database_name', $app_databasename[$primary_domain]);
            update_field('database_username', $app_databaseuser[$primary_domain]);
            update_field('database_password', $app_databasepassword[$primary_domain]);
}
}