HummingBirdAnimeClient/src/Aviat/AnimeClient/Dispatcher.php

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<?php
/**
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* Hummingbird Anime Client
*
* An API client for Hummingbird to manage anime and manga watch lists
*
* @package HummingbirdAnimeClient
* @author Timothy J. Warren
* @copyright Copyright (c) 2015 - 2016
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* @link https://github.com/timw4mail/HummingBirdAnimeClient
* @license MIT
*/
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namespace Aviat\AnimeClient;
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use Aura\Web\Request;
use Aura\Web\Response;
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use Aviat\Ion\Di\ContainerInterface;
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use Aviat\AnimeClient\AnimeClient;
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/**
* Basic routing/ dispatch
*/
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class Dispatcher extends RoutingBase {
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/**
* The route-matching object
* @var object $router
*/
protected $router;
/**
* Class wrapper for input superglobals
* @var object
*/
protected $request;
/**
* Routes added to router
* @var array $output_routes
*/
protected $output_routes;
/**
* Constructor
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*
* @param ContainerInterface $container
*/
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public function __construct(ContainerInterface $container)
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{
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parent::__construct($container);
$this->router = $container->get('aura-router');
$this->request = $container->get('request');
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$this->output_routes = $this->_setup_routes();
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}
/**
* Get the current route object, if one matches
*
* @return object
*/
public function get_route()
{
$logger = $this->container->getLogger('default');
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$raw_route = $this->request->url->get(PHP_URL_PATH);
$route_path = "/" . trim($raw_route, '/');
$logger->debug('Dispatcher - Routing data from get_route method');
$logger->debug(print_r([
'route_path' => $route_path
], TRUE));
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return $this->router->match($route_path, $_SERVER);
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}
/**
* Get list of routes applied
*
* @return array
*/
public function get_output_routes()
{
return $this->output_routes;
}
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/**
* Handle the current route
*
* @codeCoverageIgnore
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* @param object|null $route
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* @return void
*/
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public function __invoke($route = NULL)
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{
$logger = $this->container->getLogger('default');
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if (is_null($route))
{
$route = $this->get_route();
$logger->debug('Dispatcher - Route invoke arguments');
$logger->debug(print_r($route, TRUE));
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}
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if ($route)
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{
$parsed = $this->process_route($route);
$controller_name = $parsed['controller_name'];
$action_method = $parsed['action_method'];
$params = $parsed['params'];
}
else
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{
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// If not route was matched, return an appropriate http
// error message
$error_route = $this->get_error_params();
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$controller_name = AnimeClient::DEFAULT_CONTROLLER;
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$action_method = $error_route['action_method'];
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$params = $error_route['params'];
}
// Actually instantiate the controller
$this->call($controller_name, $action_method, $params);
}
/**
* Parse out the arguments for the appropriate controller for
* the current route
*
* @param \Aura\Router\Route $route
* @return array
*/
protected function process_route($route)
{
if (array_key_exists('controller', $route->params))
{
$controller_name = $route->params['controller'];
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}
else
{
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throw new \LogicException("Missing controller");
}
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// Get the full namespace for a controller if a short name is given
if (strpos($controller_name, '\\') === FALSE)
{
$map = $this->get_controller_list();
$controller_name = $map[$controller_name];
}
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$action_method = (array_key_exists('action', $route->params))
? $route->params['action']
: AnimeClient::NOT_FOUND_METHOD;
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$params = (array_key_exists('params', $route->params))
? $route->params['params']
: [];
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if ( ! empty($route->tokens))
{
foreach ($route->tokens as $key => $v)
{
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if (array_key_exists($key, $route->params))
{
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$params[$key] = $route->params[$key];
}
}
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}
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return [
'controller_name' => $controller_name,
'action_method' => $action_method,
'params' => $params
];
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}
/**
* Get the type of route, to select the current controller
*
* @return string
*/
public function get_controller()
{
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$route_type = $this->__get('default_list');
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$request_uri = $this->request->url->get(PHP_URL_PATH);
$path = trim($request_uri, '/');
$segments = explode('/', $path);
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$controller = reset($segments);
if (empty($controller))
{
$controller = $route_type;
}
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return $controller;
}
/**
* Get the list of controllers in the default namespace
*
* @return array
*/
public function get_controller_list()
{
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$default_namespace = AnimeClient::DEFAULT_CONTROLLER_NAMESPACE;
$path = str_replace('\\', '/', $default_namespace);
$path = trim($path, '/');
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$actual_path = realpath(\_dir(AnimeClient::SRC_DIR, $path));
$class_files = glob("{$actual_path}/*.php");
$controllers = [];
foreach ($class_files as $file)
{
$raw_class_name = basename(str_replace(".php", "", $file));
$path = strtolower(basename($raw_class_name));
$class_name = trim($default_namespace . '\\' . $raw_class_name, '\\');
$controllers[$path] = $class_name;
}
return $controllers;
}
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/**
* Create the controller object and call the appropriate
* method
*
* @param string $controller_name - The full namespace of the controller class
* @param string $method
* @param array $params
* @return void
*/
protected function call($controller_name, $method, array $params)
{
$logger = $this->container->getLogger('default');
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$controller = new $controller_name($this->container);
// Run the appropriate controller method
$logger->debug('Dispatcher - controller arguments');
$logger->debug(print_r($params, TRUE));
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call_user_func_array([$controller, $method], $params);
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}
/**
* Get the appropriate params for the error page
* pased on the failed route
*
* @return array|false
*/
protected function get_error_params()
{
$logger = $this->container->getLogger('default');
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$failure = $this->router->getFailedRoute();
$logger->info('Dispatcher - failed route');
$logger->info(print_r($failure, TRUE));
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$action_method = AnimeClient::ERROR_MESSAGE_METHOD;
$params = [];
if ($failure->failedMethod())
{
$params = [
'http_code' => 405,
'title' => '405 Method Not Allowed',
'message' => 'Invalid HTTP Verb'
];
}
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else if ($failure->failedAccept())
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{
$params = [
'http_code' => 406,
'title' => '406 Not Acceptable',
'message' => 'Unacceptable content type'
];
}
else
{
// Fall back to a 404 message
$action_method = AnimeClient::NOT_FOUND_METHOD;
}
return [
'params' => $params,
'action_method' => $action_method
];
}
/**
* Select controller based on the current url, and apply its relevent routes
*
* @return array
*/
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protected function _setup_routes()
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{
$route_type = $this->get_controller();
// Add routes
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$routes = [];
foreach ($this->routes as $name => &$route)
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{
$path = $route['path'];
unset($route['path']);
$controller_map = $this->get_controller_list();
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$controller_class = (array_key_exists($route_type, $controller_map))
? $controller_map[$route_type]
: AnimeClient::DEFAULT_CONTROLLER;
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if (array_key_exists($route_type, $controller_map))
{
$controller_class = $controller_map[$route_type];
}
// Prepend the controller to the route parameters
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$route['controller'] = $controller_class;
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// Select the appropriate router method based on the http verb
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$add = (array_key_exists('verb', $route))
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? "add" . ucfirst(strtolower($route['verb']))
: "addGet";
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// Add the route to the router object
if ( ! array_key_exists('tokens', $route))
{
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$routes[] = $this->router->$add($name, $path)->addValues($route);
}
else
{
$tokens = $route['tokens'];
unset($route['tokens']);
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$routes[] = $this->router->$add($name, $path)
->addValues($route)
->addTokens($tokens);
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}
}
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return $routes;
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}
}
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// End of Dispatcher.php