Generate and ship ICS file by means of WordPress

I am writing a customized plugin for reservations. I have to generate an .ics file that must be despatched to a predefined e-mail handle.

I’ve tried some library like ZContent iCalendar and a PHP script that I discovered on github that I’ve included inside my plugin code. The script works properly and I can receive a legitimate output. The issue is I can not determine how one can generate the ics file and fasten it to an e-mail utilizing the wp_mail perform.

Right here is my code:

<?php
/**
 * ICS.php
 * =======
 * Use this class to create an .ics file.
 *
 * Utilization
 * -----
 * Primary utilization - generate ics file contents (see beneath for accessible properties):
 *   $ics = new ICS($props);
 *   $ics_file_contents = $ics->to_string();
 *
 * Setting properties after instantiation
 *   $ics = new ICS();
 *   $ics->set('abstract', 'My superior occasion');
 *
 * You can too set a number of properties on the similar time by utilizing an array:
 *   $ics->set(array(
 *     'dtstart' => 'now + half-hour',
 *     'dtend' => 'now + 1 hour'
 *   ));
 *
 * Out there properties
 * --------------------
 * description
 *   String description of the occasion.
 * dtend
 *   A date/time stamp designating the top of the occasion. You should utilize both a
 *   DateTime object or a PHP datetime format string (e.g. "now + 1 hour").
 * dtstart
 *   A date/time stamp designating the beginning of the occasion. You should utilize both a
 *   DateTime object or a PHP datetime format string (e.g. "now + 1 hour").
 * location
 *   String handle or description of the situation of the occasion.
 * abstract
 *   String quick abstract of the occasion - often used because the title.
 * url
 *   A url to connect to the the occasion. Make certain so as to add the protocol (http://
 *   or https://).
 */
class WP_ICS{
  const DT_FORMAT = 'YmdTHisZ';
  protected $properties = array();
  personal $available_properties = array(
    'description',
    'dtend',
    'dtstart',
    'location',
    'abstract',
    'url'
  );
  public perform __construct($props) {
    $this->set($props);
  }
  public perform set($key, $val = false) {
    if (is_array($key)) {
      foreach ($key as $ok => $v) {
        $this->set($ok, $v);
      }
    } else {
      if (in_array($key, $this->available_properties)) {
        $this->properties[$key] = $this->sanitize_val($val, $key);
      }
    }
  }
  public perform to_string() {
    $rows = $this->build_props();
    return implode("rn", $rows);
  }
  personal perform build_props() {
    // Construct ICS properties - add header
    $ics_props = array(
      'BEGIN:VCALENDAR',
      'VERSION:2.0',
      'PRODID:-//hacksw/handcal//NONSGML v1.0//EN',
      'CALSCALE:GREGORIAN',
      'BEGIN:VEVENT'
    );
    // Construct ICS properties - add header
    $props = array();
    foreach($this->properties as $ok => $v) {
      $props[strtoupper($k . ($k === 'url' ? ';VALUE=URI' : ''))] = $v;
    }
    // Set some default values
    $props['DTSTAMP'] = $this->format_timestamp('now');
    $props['UID'] = uniqid();
    // Append properties
    foreach ($props as $ok => $v) {
      $ics_props[] = "$ok:$v";
    }
    // Construct ICS properties - add footer
    $ics_props[] = 'END:VEVENT';
    $ics_props[] = 'END:VCALENDAR';
    return $ics_props;
  }
  personal perform sanitize_val($val, $key = false) {
    swap($key) {
      case 'dtend':
      case 'dtstamp':
      case 'dtstart':
        $val = $this->format_timestamp($val);
        break;
      default:
        $val = $this->escape_string($val);
    }
    return $val;
  }
  personal perform format_timestamp($timestamp) {
    $dt = new DateTime($timestamp);
    return $dt->format(self::DT_FORMAT);
  }
  personal perform escape_string($str) {
    return preg_replace('/([,;])/','$1', $str);
  }
}


class iCalBooking{

  public perform init(){
    add_action('admin_post_forward_booking_request', array($this, 'send_booking_request'));
    add_action('admin_post_nopriv_forward_booking_request', array($this, 'send_booking_request'));
    #add_action();
    add_shortcode('reserving', array($this, 'display_booking_form'));
  }

  public perform display_booking_form(){
    include_once 'booking-form.php';
  }

  personal perform has_valid_nonce() {
      if(!isset( $_POST['booking_nonce'] )){
        return false;
      }
      $area  = wp_unslash( $_POST['booking_nonce'] );
      $motion = 'validate_booking_request';
      return wp_verify_nonce( $area, $motion );
  }

  public perform send_booking_request(){
    if(! ( $this->has_valid_nonce() ) ){
      return;
    }
    $fname = $_POST['client_fname'];
    $lname = $_POST['client_lname'];
    $cellphone = $_POS['client_phone'];
    $e-mail = $_POST['client_email'];

    $title = 'Prenotazione';

    $description = $fname . $lname . $cellphone . $e-mail;


    $ics = new WP_ICS(array(
      'location' => '',
      'description' => $description,
      'dtstart' => $_POST['client_checkin'],
      'dtend' => $_POST['client_checkout'],
      'abstract' => '',
      'url' => ''
    ));

    file_put_contents('reservation.ics', $ics->to_string() );

    #header('Content material-Sort: textual content/calendar; charset=utf-8');
    #header('Content material-Disposition: attachment; filename=reservation.ics');


  }

}

$reserving = new iCalBooking;
$booking->init();
?>