<?php
/**
* Class ActionScheduler_Abstract_Schedule
*/
abstract class ActionScheduler_Abstract_Schedule extends ActionScheduler_Schedule_Deprecated {
/**
* The date & time the schedule is set to run.
*
* @var DateTime
*/
private $scheduled_date = NULL;
/**
* Timestamp equivalent of @see $this->scheduled_date
*
* @var int
*/
protected $scheduled_timestamp = NULL;
/**
* @param DateTime $date The date & time to run the action.
*/
public function __construct( DateTime $date ) {
$this->scheduled_date = $date;
}
/**
* Check if a schedule should recur.
*
* @return bool
*/
abstract public function is_recurring();
/**
* Calculate when the next instance of this schedule would run based on a given date & time.
*
* @param DateTime $after
* @return DateTime
*/
abstract protected function calculate_next( DateTime $after );
/**
* Get the next date & time when this schedule should run after a given date & time.
*
* @param DateTime $after
* @return DateTime|null
*/
public function get_next( DateTime $after ) {
$after = clone $after;
if ( $after > $this->scheduled_date ) {
$after = $this->calculate_next( $after );
return $after;
}
return clone $this->scheduled_date;
}
/**
* Get the date & time the schedule is set to run.
*
* @return DateTime|null
*/
public function get_date() {
return $this->scheduled_date;
}
/**
* For PHP 5.2 compat, since DateTime objects can't be serialized
* @return array
*/
public function __sleep() {
$this->scheduled_timestamp = $this->scheduled_date->getTimestamp();
return array(
'scheduled_timestamp',
);
}
public function __wakeup() {
$this->scheduled_date = as_get_datetime_object( $this->scheduled_timestamp );
unset( $this->scheduled_timestamp );
}
}