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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Bernhard Posselt <dev@bernhard-posselt.com>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Donquixote <marjunebatac@gmail.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Thomas Tanghus <thomas@tanghus.net>
* @author Vincent Petry <vincent@nextcloud.com>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCP\AppFramework;
use OCP\AppFramework\Http\DataResponse;
use OCP\AppFramework\Http\JSONResponse;
use OCP\AppFramework\Http\Response;
use OCP\IRequest;
/**
* Base class to inherit your controllers from
* @since 6.0.0
*/
abstract class Controller {
/**
* app name
* @var string
* @since 7.0.0
*/
protected $appName;
/**
* current request
* @var \OCP\IRequest
* @since 6.0.0
*/
protected $request;
/**
* @var array
* @since 7.0.0
*/
private $responders;
/**
* constructor of the controller
* @param string $appName the name of the app
* @param IRequest $request an instance of the request
* @since 6.0.0 - parameter $appName was added in 7.0.0 - parameter $app was removed in 7.0.0
*/
public function __construct($appName,
IRequest $request) {
$this->appName = $appName;
$this->request = $request;
// default responders
$this->responders = [
'json' => function ($data) {
if ($data instanceof DataResponse) {
$response = new JSONResponse(
$data->getData(),
$data->getStatus()
);
$dataHeaders = $data->getHeaders();
$headers = $response->getHeaders();
// do not overwrite Content-Type if it already exists
if (isset($dataHeaders['Content-Type'])) {
unset($headers['Content-Type']);
}
$response->setHeaders(array_merge($dataHeaders, $headers));
if ($data->getETag() !== null) {
$response->setETag($data->getETag());
}
if ($data->getLastModified() !== null) {
$response->setLastModified($data->getLastModified());
}
return $response;
}
return new JSONResponse($data);
}
];
}
/**
* Parses an HTTP accept header and returns the supported responder type
* @param string $acceptHeader
* @param string $default
* @return string the responder type
* @since 7.0.0
* @since 9.1.0 Added default parameter
*/
public function getResponderByHTTPHeader($acceptHeader, $default = 'json') {
$headers = explode(',', $acceptHeader);
// return the first matching responder
foreach ($headers as $header) {
$header = strtolower(trim($header));
$responder = str_replace('application/', '', $header);
if (array_key_exists($responder, $this->responders)) {
return $responder;
}
}
// no matching header return default
return $default;
}
/**
* Registers a formatter for a type
* @param string $format
* @param \Closure $responder
* @since 7.0.0
*/
protected function registerResponder($format, \Closure $responder) {
$this->responders[$format] = $responder;
}
/**
* Serializes and formats a response
* @param mixed $response the value that was returned from a controller and
* is not a Response instance
* @param string $format the format for which a formatter has been registered
* @throws \DomainException if format does not match a registered formatter
* @return Response
* @since 7.0.0
*/
public function buildResponse($response, $format = 'json') {
if (array_key_exists($format, $this->responders)) {
$responder = $this->responders[$format];
return $responder($response);
}
throw new \DomainException('No responder registered for format '.
$format . '!');
}
}
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