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<?php
/**
* ownCloud - App Framework
*
* @author Thomas Müller
* @copyright 2013 Thomas Müller thomas.mueller@tmit.eu
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OC\AppFramework\routing;
use OC\AppFramework\DependencyInjection\DIContainer;
use OCP\Route\IRouter;
/**
* Class RouteConfig
* @package OC\AppFramework\routing
*/
class RouteConfig {
private $container;
private $router;
private $routes;
private $appName;
/**
* @param \OC\AppFramework\DependencyInjection\DIContainer $container
* @param \OCP\Route\IRouter $router
* @internal param $appName
*/
public function __construct(DIContainer $container, IRouter $router, $routes) {
$this->routes = $routes;
$this->container = $container;
$this->router = $router;
$this->appName = $container['AppName'];
}
/**
* The routes and resource will be registered to the \OCP\Route\IRouter
*/
public function register() {
// parse simple
$this->processSimpleRoutes($this->routes);
// parse resources
$this->processResources($this->routes);
}
/**
* Creates one route base on the give configuration
* @param array $routes
* @throws \UnexpectedValueException
*/
private function processSimpleRoutes($routes)
{
$simpleRoutes = isset($routes['routes']) ? $routes['routes'] : array();
foreach ($simpleRoutes as $simpleRoute) {
$name = $simpleRoute['name'];
$url = $simpleRoute['url'];
$verb = isset($simpleRoute['verb']) ? strtoupper($simpleRoute['verb']) : 'GET';
$split = explode('#', $name, 2);
if (count($split) != 2) {
throw new \UnexpectedValueException('Invalid route name');
}
$controller = $split[0];
$action = $split[1];
$controllerName = $this->buildControllerName($controller);
$actionName = $this->buildActionName($action);
// register the route
$handler = new RouteActionHandler($this->container, $controllerName, $actionName);
$router = $this->router->create($this->appName.'.'.$controller.'.'.$action, $url)
->method($verb)
->action($handler);
// optionally register requirements for route. This is used to
// tell the route parser how url parameters should be matched
if(array_key_exists('requirements', $simpleRoute)) {
$router->requirements($simpleRoute['requirements']);
}
}
}
/**
* For a given name and url restful routes are created:
* - index
* - show
* - new
* - create
* - update
* - destroy
*
* @param array $routes
*/
private function processResources($routes)
{
// declaration of all restful actions
$actions = array(
array('name' => 'index', 'verb' => 'GET', 'on-collection' => true),
array('name' => 'show', 'verb' => 'GET'),
array('name' => 'create', 'verb' => 'POST', 'on-collection' => true),
array('name' => 'update', 'verb' => 'PUT'),
array('name' => 'destroy', 'verb' => 'DELETE'),
);
$resources = isset($routes['resources']) ? $routes['resources'] : array();
foreach ($resources as $resource => $config) {
// the url parameter used as id to the resource
$resourceId = $this->buildResourceId($resource);
foreach($actions as $action) {
$url = $config['url'];
$method = $action['name'];
$verb = isset($action['verb']) ? strtoupper($action['verb']) : 'GET';
$collectionAction = isset($action['on-collection']) ? $action['on-collection'] : false;
if (!$collectionAction) {
$url = $url . '/' . $resourceId;
}
if (isset($action['url-postfix'])) {
$url = $url . '/' . $action['url-postfix'];
}
$controller = $resource;
$controllerName = $this->buildControllerName($controller);
$actionName = $this->buildActionName($method);
$routeName = $this->appName . '.' . strtolower($resource) . '.' . strtolower($method);
$this->router->create($routeName, $url)->method($verb)->action(
new RouteActionHandler($this->container, $controllerName, $actionName)
);
}
}
}
/**
* Based on a given route name the controller name is generated
* @param string $controller
* @return string
*/
private function buildControllerName($controller)
{
return $this->underScoreToCamelCase(ucfirst($controller)) . 'Controller';
}
/**
* Based on the action part of the route name the controller method name is generated
* @param string $action
* @return string
*/
private function buildActionName($action) {
return $this->underScoreToCamelCase($action);
}
/**
* Generates the id used in the url part o the route url
* @param string $resource
* @return string
*/
private function buildResourceId($resource) {
return '{'.$this->underScoreToCamelCase(rtrim($resource, 's')).'Id}';
}
/**
* Underscored strings are converted to camel case strings
* @param string $str
* @return string
*/
private function underScoreToCamelCase($str) {
$pattern = "/_[a-z]?/";
return preg_replace_callback(
$pattern,
function ($matches) {
return strtoupper(ltrim($matches[0], "_"));
},
$str);
}
}
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