testing

PhabricatorFileDeleteController.php
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			<?php

			final class PhabricatorFileDeleteController extends PhabricatorFileController {

			private $id;

			public function willProcessRequest(array $data) {
			$this->id = $data['id'];
			}

			public function processRequest() {
			$request = $this->getRequest();
			$user = $request->getUser();

			$file = id(new PhabricatorFileQuery())
			->setViewer($user)
			->withIDs(array($this->id))
			->requireCapabilities(
			array(
			PhabricatorPolicyCapability::CAN_VIEW,
			PhabricatorPolicyCapability::CAN_EDIT,
			))
			->executeOne();
			if (!$file) {
			return new Aphront404Response();
			}

			if (($user->getPHID() != $file->getAuthorPHID()) &&
			(!$user->getIsAdmin())) {
			return new Aphront403Response();
			}

			if ($request->isFormPost()) {
			$file->delete();
			return id(new AphrontRedirectResponse())->setURI('/file/');
			}

			$dialog = new AphrontDialogView();
			$dialog->setUser($user);
			$dialog->setTitle(pht('Really delete file?'));
			$dialog->appendChild(hsprintf(
			'<p>%s</p>',
			pht(
			"Permanently delete '%s'? This action can not be undone.",
			$file->getName())));
			$dialog->addSubmitButton(pht('Delete'));
			$dialog->addCancelButton($file->getInfoURI());

			return id(new AphrontDialogResponse())->setDialog($dialog);
			}
			}