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SubscriptionPhase.php
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SubscriptionPhase.php
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<?php
/**
* Subscription Phase
*
* @author Pronamic <info@pronamic.eu>
* @copyright 2005-2023 Pronamic
* @license GPL-3.0-or-later
* @package Pronamic\WordPress\Pay\Subscriptions
*/
namespace Pronamic\WordPress\Pay\Subscriptions;
use Pronamic\WordPress\DateTime\DateTimeImmutable;
use Pronamic\WordPress\DateTime\DateTimeInterface;
use Pronamic\WordPress\Money\Money;
use Pronamic\WordPress\Pay\MoneyJsonTransformer;
/**
* Subscription Phase
*
* @author Remco Tolsma
* @version 2.5.0
* @since 2.5.0
*/
class SubscriptionPhase implements \JsonSerializable {
/**
* Subscription.
*
* @var Subscription
*/
private $subscription;
/**
* The sequence number.
*
* @var int|null
*/
private $sequence_number;
/**
* Canceled at.
*
* @var DateTimeImmutable|null
*/
private $canceled_at;
/**
* Amount.
*
* @var Money
*/
private $amount;
/**
* Interval.
*
* @var SubscriptionInterval
*/
private $interval;
/**
* The date this phase will start.
*
* @var DateTimeImmutable
*/
private $start_date;
/**
* The date this phase will end.
*
* @var DateTimeImmutable|null
*/
private $end_date;
/**
* Alignment rate.
*
* @var float|null
*/
private $alignment_rate;
/**
* Proration.
*
* @var bool
*/
private $is_prorated;
/**
* Boolean flag to indicate a trial subscription phase.
*
* @var bool
*/
private $is_trial;
/**
* Construct subscription phase.
*
* @param Subscription $subscription Subscription.
* @param \DateTimeInterface $start_date Start date.
* @param SubscriptionInterval $interval Interval.
* @param Money $amount Amount.
* @return void
*/
public function __construct( Subscription $subscription, \DateTimeInterface $start_date, SubscriptionInterval $interval, Money $amount ) {
$this->subscription = $subscription;
$this->set_start_date( $start_date );
$this->interval = $interval;
$this->amount = $amount;
$this->is_prorated = false;
$this->is_trial = false;
}
/**
* Get subscription.
*
* @return Subscription
*/
public function get_subscription() {
return $this->subscription;
}
/**
* Get sequence number.
*
* @return int|null
*/
public function get_sequence_number() {
return $this->sequence_number;
}
/**
* Set sequence number.
*
* @param int $sequence_number Sequence number.
* @return void
*/
public function set_sequence_number( $sequence_number ) {
$this->sequence_number = $sequence_number;
}
/**
* Get start date.
*
* @return DateTimeImmutable
*/
public function get_start_date() {
return $this->start_date;
}
/**
* Set start date.
*
* @param \DateTimeInterface $start_date Start date.
* @return void
*/
public function set_start_date( $start_date ) {
$this->start_date = DateTimeImmutable::create_from_interface( $start_date );
}
/**
* Get end date.
*
* @return DateTimeImmutable|null
*/
public function get_end_date() {
return $this->end_date;
}
/**
* Set end date.
*
* @param \DateTimeInterface|null $end_date End date.
* @return void
*/
public function set_end_date( $end_date ) {
$this->end_date = ( null === $end_date ) ? null : DateTimeImmutable::create_from_interface( $end_date );
}
/**
* Get next date.
*
* @return DateTimeImmutable|null
*/
public function get_next_date() {
/**
* Check whether all periods have been created, if so there is no next date.
*/
if ( $this->all_periods_created() ) {
return null;
}
/**
* Check whether phase has been canceled, if so there is no next date.
*/
if ( $this->is_canceled() ) {
return null;
}
/**
* Ok.
*/
return $this->subscription->get_next_payment_date();
}
/**
* Set next date.
*
* @param \DateTimeInterface|null $next_date Next date.
* @return void
*/
public function set_next_date( $next_date ) {
$this->subscription->set_next_payment_date( $next_date );
}
/**
* Check if this phase is canceled.
*
* @link https://www.grammarly.com/blog/canceled-vs-cancelled/
* @link https://docs.mollie.com/reference/v2/subscriptions-api/cancel-subscription
* @return bool True if canceled, false otherwise.
*/
public function is_canceled() {
return ( null !== $this->canceled_at );
}
/**
* Get canceled date.
*
* @return DateTimeImmutable|null Canceled date or null if phase is not canceled (yet).
*/
public function get_canceled_at() {
return $this->canceled_at;
}
/**
* Set canceled date.
*
* @param DateTimeImmutable|null $canceled_at Canceled date.
* @return void
*/
public function set_canceled_at( DateTimeImmutable $canceled_at = null ) {
$this->canceled_at = $canceled_at;
}
/**
* Get amount.
*
* @return Money
*/
public function get_amount() {
return $this->amount;
}
/**
* Set amount.
*
* @param Money $amount Amount.
* @return void
*/
public function set_amount( $amount ) {
$this->amount = $amount;
}
/**
* Get total periods.
*
* @return int|null
*/
public function get_total_periods() {
if ( null === $this->end_date ) {
return null;
}
$period = new \DatePeriod( $this->start_date, $this->interval, $this->end_date );
return \iterator_count( $period );
}
/**
* Set total periods.
*
* @param int|null $total_periods Total periods to create.
* @return void
*/
public function set_total_periods( $total_periods ) {
$this->set_end_date( null === $total_periods ? null : $this->add_interval( $this->start_date, $total_periods ) );
}
/**
* Get periods created.
*
* @return int
*/
public function get_periods_created() {
$next_date = $this->subscription->get_next_payment_date();
if ( null === $next_date ) {
return 0;
}
$period = new \DatePeriod(
new \DateTimeImmutable( $this->start_date->format( 'Y-m-d 00:00:00' ) ),
$this->interval,
new \DateTimeImmutable( $next_date->format( 'Y-m-d 00:00:00' ) )
);
return \iterator_count( $period );
}
/**
* Set periods created.
*
* @param int $periods_created The number of periods created.
* @return void
*/
public function set_periods_created( $periods_created ) {
$this->set_next_date( $this->add_interval( $this->start_date, $periods_created ) );
}
/**
* Get the number of periods that are remaining.
*
* @return int|null
*/
public function get_periods_remaining() {
if ( null === $this->end_date ) {
// Infinite.
return null;
}
$period = new \DatePeriod( $this->start_date, $this->interval, $this->end_date );
$total_periods = \iterator_count( $period );
return $total_periods - $this->get_periods_created();
}
/**
* Is alignment.
*
* @return bool
*/
public function is_alignment() {
return ( null !== $this->alignment_rate );
}
/**
* Get alignment rate.
*
* @return float|null
*/
public function get_alignment_rate() {
return $this->alignment_rate;
}
/**
* Set alignment rate.
*
* @param float|null $alignment_rate Alignment rate.
* @return void
*/
public function set_alignment_rate( $alignment_rate ) {
$this->alignment_rate = $alignment_rate;
}
/**
* Is prorated.
*
* @return bool
*/
public function is_prorated() {
return $this->is_prorated;
}
/**
* Set prorated.
*
* @param bool $is_prorated Proration.
* @return void
*/
public function set_prorated( $is_prorated ) {
$this->is_prorated = $is_prorated;
}
/**
* Check if this phase is a trial.
*
* @return bool True if trial, false otherwise.
*/
public function is_trial() {
return $this->is_trial;
}
/**
* Set trial.
*
* @param bool $is_trial Trial.
* @return void
*/
public function set_trial( $is_trial ) {
$this->is_trial = $is_trial;
}
/**
* The subscription phase is infinite when the total periods number is undefined.
*
* @return bool True if infinite, false otherwise.
*/
public function is_infinite() {
return ( null === $this->end_date );
}
/**
* Check if all periods are created.
*
* @return bool True if all periods are created, false otherwise.
*/
public function all_periods_created() {
return $this->is_completed_to_date( $this->subscription->get_next_payment_date() );
}
/**
* Check if this phase is completed to date.
*
* @param DateTimeInterface|null $date Date.
* @return bool True if phase is completed to date, false otherwise.
*/
public function is_completed_to_date( DateTimeInterface $date = null ) {
if ( null === $date ) {
return true;
}
if ( null === $this->end_date ) {
return false;
}
return $date >= $this->end_date;
}
/**
* Get interval.
*
* @link https://www.php.net/manual/en/class.dateinterval.php
* @link https://www.php.net/manual/en/dateinterval.construct.php
* @return SubscriptionInterval
*/
public function get_interval() {
return $this->interval;
}
/**
* Add subscription phase interval to date.
*
* @param DateTimeImmutable $date Date to add interval period to.
* @param int $times Number of times to add interval.
* @return DateTimeImmutable
*/
private function add_interval( $date, $times = 1 ) {
// If times is zero there is nothing to add.
if ( 0 === $times ) {
return $date;
}
// Multiply date interval.
return $date->add( $this->interval->multiply( $times ) );
}
/**
* Get period for the specified start date.
*
* @param DateTimeImmutable $start_date Start date.
* @return SubscriptionPeriod|null
*/
public function get_period( DateTimeImmutable $start_date = null ) {
if ( null === $start_date ) {
return null;
}
if ( $this->start_date > $start_date ) {
return null;
}
$end_date = $this->add_interval( $start_date );
if ( null !== $this->end_date && $end_date > $this->end_date ) {
return null;
}
$period = new SubscriptionPeriod( $this, $start_date, $end_date, $this->get_amount() );
return $period;
}
/**
* Get next period.
*
* @return SubscriptionPeriod|null
*/
public function get_next_period() {
return $this->get_period( $this->get_next_date() );
}
/**
* Next period.
*
* This method works like the PHP native `next` function, it will advance the internal
* pointer of this subscription phase.
*
* @return SubscriptionPeriod|null
*/
public function next_period() {
$next_period = $this->get_next_period();
if ( null === $next_period ) {
return null;
}
$this->set_next_date( $next_period->get_end_date() );
return $next_period;
}
/**
* Get JSON object.
*
* @return mixed
*/
#[\ReturnTypeWillChange]
public function jsonSerialize() {
return (object) [
'subscription' => (object) [
'$ref' => \rest_url(
\sprintf(
'/%s/%s/%d',
'pronamic-pay/v1',
'subscriptions',
$this->subscription->get_id()
)
),
],
'sequence_number' => $this->get_sequence_number(),
'start_date' => $this->start_date->format( \DATE_ATOM ),
'end_date' => ( null === $this->end_date ) ? null : $this->end_date->format( \DATE_ATOM ),
'interval' => $this->interval->get_specification(),
'amount' => $this->amount->jsonSerialize(),
// Numbers.
'total_periods' => $this->get_total_periods(),
'periods_created' => $this->get_periods_created(),
'periods_remaining' => $this->get_periods_remaining(),
// Other.
'canceled_at' => ( null === $this->canceled_at ) ? null : $this->canceled_at->format( \DATE_ATOM ),
'alignment_rate' => $this->alignment_rate,
// Flags.
'is_alignment' => $this->is_alignment(),
'is_prorated' => $this->is_prorated(),
'is_trial' => $this->is_trial(),
// Readonly.
'is_infinite' => $this->is_infinite(),
'is_canceled' => $this->is_canceled(),
];
}
/**
* Create subscription phase from object.
*
* @param mixed $json JSON.
* @return SubscriptionPhase
* @throws \InvalidArgumentException Throws invalid argument exception when JSON is not an object.
*/
public static function from_json( $json ) {
if ( ! is_object( $json ) ) {
throw new \InvalidArgumentException( 'JSON value must be an object.' );
}
if ( ! isset( $json->subscription ) ) {
throw new \InvalidArgumentException( 'Object must contain `subscription` property.' );
}
if ( ! isset( $json->start_date ) ) {
throw new \InvalidArgumentException( 'Object must contain `start_date` property.' );
}
if ( ! isset( $json->interval ) ) {
throw new \InvalidArgumentException( 'Object must contain `interval` property.' );
}
if ( ! isset( $json->amount ) ) {
throw new \InvalidArgumentException( 'Object must contain `amount` property.' );
}
$start_date = new DateTimeImmutable( $json->start_date );
$phase = new self(
$json->subscription,
$start_date,
new SubscriptionInterval( $json->interval ),
MoneyJsonTransformer::from_json( $json->amount )
);
if ( property_exists( $json, 'total_periods' ) ) {
$phase->set_total_periods( $json->total_periods );
}
if ( property_exists( $json, 'end_date' ) ) {
$phase->set_end_date( null === $json->end_date ? null : new DateTimeImmutable( $json->end_date ) );
}
if ( property_exists( $json, 'periods_created' ) ) {
$phase->set_periods_created( $json->periods_created );
}
if ( property_exists( $json, 'alignment_rate' ) ) {
$phase->set_alignment_rate( $json->alignment_rate );
}
if ( property_exists( $json, 'is_prorated' ) ) {
$phase->set_prorated( \boolval( $json->is_prorated ) );
}
if ( property_exists( $json, 'is_trial' ) ) {
$phase->set_trial( \boolval( $json->is_trial ) );
}
if ( property_exists( $json, 'canceled_at' ) ) {
if ( null !== $json->canceled_at ) {
$phase->set_canceled_at( new DateTimeImmutable( $json->canceled_at ) );
}
}
return $phase;
}
/**
* Align the phase to align date.
*
* @param self $phase The phase to align.
* @param \DateTimeInterface $align_date The alignment date.
* @return SubscriptionPhase
* @throws \Exception Throws exception on invalid date interval.
*/
public static function align( self $phase, \DateTimeInterface $align_date ) {
$start_date = $phase->get_start_date();
$next_date = $start_date->add( $phase->get_interval() );
$regular_difference = $start_date->diff( $next_date, true );
/**
* PHPStan fix.
*
* If the DateInterval object was created by DateTime::diff(), then this is the total
* number of days between the start and end dates. Otherwise, days will be FALSE.
*/
if ( false === $regular_difference->days ) {
throw new \Exception( 'Could not calculate the total number of days between the phase start date and the next period start date.' );
}
$alignment_difference = $start_date->diff( $align_date, true );
/**
* PHPStan fix.
*
* If the DateInterval object was created by DateTime::diff(), then this is the total
* number of days between the start and end dates. Otherwise, days will be FALSE.
*/
if ( false === $alignment_difference->days ) {
throw new \Exception( 'Could not calculate the total number of days between the phase start date and the next alignment date.' );
}
$alignment_interval = new SubscriptionInterval( 'P' . $alignment_difference->days . 'D' );
$alignment_phase = new self( $phase->get_subscription(), $start_date, $alignment_interval, $phase->get_amount() );
$alignment_phase->set_total_periods( 1 );
$alignment_phase->set_alignment_rate( $alignment_difference->days / $regular_difference->days );
// Remove one period from regular phase.
$total_periods = $phase->get_total_periods();
if ( null !== $total_periods ) {
$phase->set_total_periods( $total_periods - 1 );
}
$alignment_end_date = $alignment_phase->get_end_date();
if ( null === $alignment_end_date ) {
throw new \Exception( 'The align phase should always end because this phase exists for one period.' );
}
$phase->set_start_date( $alignment_end_date );
return $alignment_phase;
}
}