<?php

function riverside_pt_mail(string $key, array &$message, array $params): void {
  if ($key !== 'booking_request') {
    return;
  }

  $start = new \DateTime($params['start']);
  $end   = new \DateTime($params['end']);

  $message['subject'] = 'Booking request — ' . $start->format('M j, Y g:i A');
  $message['body'][]  = implode("\n", [
    'Name:  ' . $params['first_name'] . ' ' . $params['last_name'],
    'Phone: ' . $params['phone'],
    'Slot:  ' . $start->format('l, F j, Y') . ', ' . $start->format('g:i A') . '–' . $end->format('g:i A'),
  ]);
}