PhabricatorRepositoryServiceTransaction.php
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	<?php

	final class PhabricatorRepositoryServiceTransaction
	extends PhabricatorRepositoryTransactionType {

	const TRANSACTIONTYPE = 'repo:service';

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

	public function generateNewValue($object, $value) {
	if (strlen($value)) {
	return $value;
	}

	return null;
	}

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

	public function getTitle() {
	$old = $this->getOldValue();
	$new = $this->getOldValue();

	if (strlen($old) && !strlen($new)) {
	return pht(
	'%s moved storage for this repository from %s to local.',
	$this->renderAuthor(),
	$this->renderOldHandle());
	} else if (!strlen($old) && strlen($new)) {
	// TODO: Possibly, we should distinguish between automatic assignment
	// on creation vs explicit adjustment.
	return pht(
	'%s set storage for this repository to %s.',
	$this->renderAuthor(),
	$this->renderNewHandle());
	} else {
	return pht(
	'%s moved storage for this repository from %s to %s.',
	$this->renderAuthor(),
	$this->renderOldHandle(),
	$this->renderNewHandle());
	}
	}

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

	// TODO: This could use some validation, values should be valid Almanac
	// services of appropriate types. It's only reachable via the CLI so it's
	// difficult to get wrong in practice.

	return $errors;
	}

	}