<?php
  
  namespace Illuminate\Support;
  
  use DateInterval;
  use DateTimeInterface;
  
  trait InteractsWithTime
  {
      /**
       * Get the number of seconds until the given DateTime.
       *
       * @param  \DateTimeInterface|\DateInterval|int  $delay
       * @return int
       */
      protected function secondsUntil($delay)
      {
          $delay = $this->parseDateInterval($delay);
  
          return $delay instanceof DateTimeInterface
                              ? max(0, $delay->getTimestamp() - $this->currentTime())
                              : (int) $delay;
      }
  
      /**
       * Get the "available at" UNIX timestamp.
       *
       * @param  \DateTimeInterface|\DateInterval|int  $delay
       * @return int
       */
      protected function availableAt($delay = 0)
      {
          $delay = $this->parseDateInterval($delay);
  
          return $delay instanceof DateTimeInterface
                              ? $delay->getTimestamp()
                              : Carbon::now()->addRealSeconds($delay)->getTimestamp();
      }
  
      /**
       * If the given value is an interval, convert it to a DateTime instance.
       *
       * @param  \DateTimeInterface|\DateInterval|int  $delay
       * @return \DateTimeInterface|int
       */
      protected function parseDateInterval($delay)
      {
          if ($delay instanceof DateInterval) {
              $delay = Carbon::now()->add($delay);
          }
  
          return $delay;
      }
  
      /**
       * Get the current system time as a UNIX timestamp.
       *
       * @return int
       */
      protected function currentTime()
      {
          return Carbon::now()->getTimestamp();
      }
  }