PhabricatorCountdownEpochTransaction.php
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	<?php

	final class PhabricatorCountdownEpochTransaction
	extends PhabricatorCountdownTransactionType {

	const TRANSACTIONTYPE = 'countdown:epoch';

	public function generateOldValue($object) {
	return (int)$object->getEpoch();
	}

	public function generateNewValue($object, $value) {
	return $value->newPhutilDateTime()
	->newAbsoluteDateTime()
	->getEpoch();
	}

	public function applyInternalEffects($object, $value) {
	$object->setEpoch($value);
	}

	public function getTitle() {
	return pht(
	'%s updated the countdown end from %s to %s.',
	$this->renderAuthor(),
	$this->renderOldDate(),
	$this->renderNewDate());
	}

	public function getTitleForFeed() {
	return pht(
	'%s updated the countdown end for %s from %s to %s.',
	$this->renderAuthor(),
	$this->renderObject(),
	$this->renderOldDate(),
	$this->renderNewDate());
	}

	public function validateTransactions($object, array $xactions) {
	$errors = array();

	if (!$object->getEpoch() && !$xactions) {
	$errors[] = $this->newRequiredError(
	pht('You must give the countdown an end date.'));
	return $errors;
	}

	foreach ($xactions as $xaction) {
	$value = $xaction->getNewValue();
	if (!$value->isValid()) {
	$errors[] = $this->newInvalidError(
	pht('You must give the countdown an end date.'));
	}
	}

	return $errors;
	}
	}