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<?php
namespace WPMailSMTP\Tasks;
/**
* Class Task.
*
* @since 2.1.0
*/
class Task {
/**
* This task is async (runs asap).
*
* @since 2.1.0
*/
const TYPE_ASYNC = 'async';
/**
* This task is a recurring.
*
* @since 2.1.0
*/
const TYPE_RECURRING = 'scheduled';
/**
* This task is run once.
*
* @since 2.1.0
*/
const TYPE_ONCE = 'once';
/**
* Type of the task.
*
* @since 2.1.0
*
* @var string
*/
private $type;
/**
* Action that will be used as a hook.
*
* @since 2.1.0
*
* @var string
*/
private $action;
/**
* Task meta ID.
*
* @since 2.1.0
*
* @var int
*/
private $meta_id;
/**
* All the params that should be passed to the hook.
*
* @since 2.1.0
*
* @var array
*/
private $params;
/**
* When the first instance of the job will run.
* Used for ONCE ane RECURRING tasks.
*
* @since 2.1.0
*
* @var int
*/
private $timestamp;
/**
* How long to wait between runs.
* Used for RECURRING tasks.
*
* @since 2.1.0
*
* @var int
*/
private $interval;
/**
* Task constructor.
*
* @since 2.1.0
*
* @param string $action Action of the task.
*
* @throws \InvalidArgumentException When action is not a string.
* @throws \UnexpectedValueException When action is empty.
*/
public function __construct( $action ) {
if ( ! is_string( $action ) ) {
throw new \InvalidArgumentException( 'Task action should be a string.' );
}
$this->action = sanitize_key( $action );
if ( empty( $this->action ) ) {
throw new \UnexpectedValueException( 'Task action cannot be empty.' );
}
}
/**
* Define the type of the task as async.
*
* @since 2.1.0
*
* @return Task
*/
public function async() {
$this->type = self::TYPE_ASYNC;
return $this;
}
/**
* Define the type of the task as recurring.
*
* @since 2.1.0
*
* @param int $timestamp When the first instance of the job will run.
* @param int $interval How long to wait between runs.
*
* @return Task
*/
public function recurring( $timestamp, $interval ) {
$this->type = self::TYPE_RECURRING;
$this->timestamp = (int) $timestamp;
$this->interval = (int) $interval;
return $this;
}
/**
* Define the type of the task as one-time.
*
* @since 2.1.0
*
* @param int $timestamp When the first instance of the job will run.
*
* @return Task
*/
public function once( $timestamp ) {
$this->type = self::TYPE_ONCE;
$this->timestamp = (int) $timestamp;
return $this;
}
/**
* Pass any number of params that should be saved to Meta table.
*
* @since 2.1.0
*
* @return Task
*/
public function params() {
$this->params = func_get_args();
return $this;
}
/**
* Register the action.
* Should be the final call in a chain.
*
* @since 2.1.0
*
* @return null|string Action ID.
*/
public function register() { // phpcs:ignore Generic.Metrics.CyclomaticComplexity.TooHigh
$action_id = null;
// No processing if ActionScheduler is not usable.
if ( ! Tasks::is_usable() ) {
return $action_id;
}
// Save data to tasks meta table.
$task_meta = new Meta();
// No processing if meta table was not created on multisite subsite.
if ( is_multisite() && ! $task_meta->table_exists() ) {
return $action_id;
}
$this->meta_id = $task_meta->add(
[
'action' => $this->action,
'data' => isset( $this->params ) ? $this->params : [],
]
);
if ( empty( $this->meta_id ) ) {
return $action_id;
}
// Prevent 500 errors when Action Scheduler tables don't exist.
try {
switch ( $this->type ) {
case self::TYPE_ASYNC:
$action_id = $this->register_async();
break;
case self::TYPE_RECURRING:
$action_id = $this->register_recurring();
break;
case self::TYPE_ONCE:
$action_id = $this->register_once();
break;
}
} catch ( \RuntimeException $exception ) {
$action_id = null;
}
return $action_id;
}
/**
* Register the async task.
*
* @since 2.1.0
*
* @return null|string Action ID.
*/
protected function register_async() {
if ( ! function_exists( 'as_enqueue_async_action' ) ) {
return null;
}
return as_enqueue_async_action(
$this->action,
[ $this->meta_id ],
Tasks::GROUP
);
}
/**
* Register the recurring task.
*
* @since 2.1.0
*
* @return null|string Action ID.
*/
protected function register_recurring() {
if ( ! function_exists( 'as_schedule_recurring_action' ) ) {
return null;
}
return as_schedule_recurring_action(
$this->timestamp,
$this->interval,
$this->action,
[ $this->meta_id ],
Tasks::GROUP
);
}
/**
* Register the one-time task.
*
* @since 2.1.0
*
* @return null|string Action ID.
*/
protected function register_once() {
if ( ! function_exists( 'as_schedule_single_action' ) ) {
return null;
}
return as_schedule_single_action(
$this->timestamp,
$this->action,
[ $this->meta_id ],
Tasks::GROUP
);
}
/**
* Cancel all occurrences of this task.
*
* @since 2.1.0
*
* @return null|bool|string Null if no matching action found,
* false if AS library is missing,
* string of the scheduled action ID if a scheduled action was found and unscheduled.
*/
public function cancel() {
// Exit if AS function does not exist.
if ( ! function_exists( 'as_unschedule_all_actions' ) ) {
return false;
}
return as_unschedule_all_actions( $this->action );
}
}