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166 lines
4.3 KiB
166 lines
4.3 KiB
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Bernhard Posselt <dev@bernhard-posselt.com>
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Donquixote <marjunebatac@gmail.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Thomas Tanghus <thomas@tanghus.net>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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/**
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* Public interface of ownCloud for apps to use.
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* AppFramework\Controller class
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*/
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namespace OCP\AppFramework;
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use OCP\AppFramework\Http\DataResponse;
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use OCP\AppFramework\Http\JSONResponse;
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use OCP\AppFramework\Http\Response;
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use OCP\IRequest;
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/**
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* Base class to inherit your controllers from
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* @since 6.0.0
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*/
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abstract class Controller {
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/**
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* app name
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* @var string
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* @since 7.0.0
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*/
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protected $appName;
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/**
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* current request
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* @var \OCP\IRequest
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* @since 6.0.0
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*/
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protected $request;
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/**
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* @var array
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* @since 7.0.0
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*/
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private $responders;
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/**
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* constructor of the controller
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* @param string $appName the name of the app
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* @param IRequest $request an instance of the request
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* @since 6.0.0 - parameter $appName was added in 7.0.0 - parameter $app was removed in 7.0.0
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*/
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public function __construct($appName,
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IRequest $request) {
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$this->appName = $appName;
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$this->request = $request;
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// default responders
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$this->responders = [
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'json' => function ($data) {
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if ($data instanceof DataResponse) {
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$response = new JSONResponse(
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$data->getData(),
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$data->getStatus()
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);
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$dataHeaders = $data->getHeaders();
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$headers = $response->getHeaders();
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// do not overwrite Content-Type if it already exists
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if (isset($dataHeaders['Content-Type'])) {
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unset($headers['Content-Type']);
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}
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$response->setHeaders(array_merge($dataHeaders, $headers));
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if ($data->getETag() !== null) {
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$response->setETag($data->getETag());
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}
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if ($data->getLastModified() !== null) {
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$response->setLastModified($data->getLastModified());
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}
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return $response;
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}
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return new JSONResponse($data);
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}
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];
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}
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/**
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* Parses an HTTP accept header and returns the supported responder type
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* @param string $acceptHeader
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* @param string $default
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* @return string the responder type
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* @since 7.0.0
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* @since 9.1.0 Added default parameter
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*/
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public function getResponderByHTTPHeader($acceptHeader, $default='json') {
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$headers = explode(',', $acceptHeader);
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// return the first matching responder
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foreach ($headers as $header) {
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$header = strtolower(trim($header));
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$responder = str_replace('application/', '', $header);
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if (array_key_exists($responder, $this->responders)) {
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return $responder;
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}
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}
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// no matching header return default
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return $default;
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}
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/**
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* Registers a formatter for a type
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* @param string $format
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* @param \Closure $responder
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* @since 7.0.0
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*/
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protected function registerResponder($format, \Closure $responder) {
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$this->responders[$format] = $responder;
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}
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/**
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* Serializes and formats a response
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* @param mixed $response the value that was returned from a controller and
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* is not a Response instance
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* @param string $format the format for which a formatter has been registered
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* @throws \DomainException if format does not match a registered formatter
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* @return Response
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* @since 7.0.0
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*/
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public function buildResponse($response, $format='json') {
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if (array_key_exists($format, $this->responders)) {
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$responder = $this->responders[$format];
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return $responder($response);
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}
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throw new \DomainException('No responder registered for format '.
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$format . '!');
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}
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}
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