HummingBirdAnimeClient/src/AnimeClient/Dispatcher.php
Timothy J. Warren ff6fcffca8
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2020-08-04 09:30:21 -04:00

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PHP

<?php declare(strict_types=1);
/**
* Hummingbird Anime List Client
*
* An API client for Kitsu to manage anime and manga watch lists
*
* PHP version 7.4
*
* @package HummingbirdAnimeClient
* @author Timothy J. Warren <tim@timshomepage.net>
* @copyright 2015 - 2020 Timothy J. Warren
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @version 5.1
* @link https://git.timshomepage.net/timw4mail/HummingBirdAnimeClient
*/
namespace Aviat\AnimeClient;
use Aviat\AnimeClient\Enum\EventType;
use function Aviat\Ion\_dir;
use Aura\Router\{Map, Matcher, Route, Rule};
use Aviat\AnimeClient\API\FailedResponseException;
use Aviat\Ion\Di\ContainerInterface;
use Aviat\Ion\Event;
use Aviat\Ion\Friend;
use Aviat\Ion\Type\StringType;
use LogicException;
use ReflectionException;
/**
* Basic routing/ dispatch
*/
final class Dispatcher extends RoutingBase {
/**
* The route-matching object
* @var Map $router
*/
protected Map $router;
/**
* The route matcher
* @var Matcher $matcher
*/
protected Matcher $matcher;
/**
* Routing array
* @var array
*/
protected array $routes;
/**
* Routes added to router
* @var array $outputRoutes
*/
protected array $outputRoutes;
/**
* Constructor
*
* @param ContainerInterface $container
*/
public function __construct(ContainerInterface $container)
{
parent::__construct($container);
$router = $this->container->get('aura-router');
$this->router = $router->getMap();
$this->matcher = $router->getMatcher();
$this->routes = $this->config->get('routes');
$this->outputRoutes = $this->setupRoutes();
}
/**
* Get the current route object, if one matches
*
* @return Route|false
*/
public function getRoute()
{
$logger = $this->container->getLogger();
$rawRoute = $this->request->getUri()->getPath();
$routePath = '/' . trim($rawRoute, '/');
if ($logger !== NULL)
{
$logger->info('Dispatcher - Routing data from get_route method');
$logger->info(print_r([
'route_path' => $routePath
], TRUE));
}
return $this->matcher->match($this->request);
}
/**
* Get list of routes applied
*
* @return array
*/
public function getOutputRoutes(): array
{
return $this->outputRoutes;
}
/**
* Handle the current route
*
* @param object|null $route
* @return void
* @throws ReflectionException
*/
public function __invoke($route = NULL): void
{
$logger = $this->container->getLogger();
if ($route === NULL)
{
$route = $this->getRoute();
if ($logger !== NULL)
{
$logger->info('Dispatcher - Route invoke arguments');
$logger->info(print_r($route, TRUE));
}
}
if ( ! $route)
{
// If not route was matched, return an appropriate http
// error message
$errorRoute = $this->getErrorParams();
$controllerName = DEFAULT_CONTROLLER;
$actionMethod = $errorRoute['action_method'];
$params = $errorRoute['params'];
$this->call($controllerName, $actionMethod, $params);
return;
}
$parsed = $this->processRoute(new Friend($route));
$controllerName = $parsed['controller_name'];
$actionMethod = $parsed['action_method'];
$params = $parsed['params'];
$this->call($controllerName, $actionMethod, $params);
}
/**
* Parse out the arguments for the appropriate controller for
* the current route
*
* @param Route $route
* @throws LogicException
* @return array
*/
protected function processRoute($route): array
{
if ( ! array_key_exists('controller', $route->attributes))
{
throw new LogicException('Missing controller');
}
$controllerName = $route->attributes['controller'];
// Get the full namespace for a controller if a short name is given
if (strpos($controllerName, '\\') === FALSE)
{
$map = $this->getControllerList();
$controllerName = $map[$controllerName];
}
$actionMethod = array_key_exists('action', $route->attributes)
? $route->attributes['action']
: NOT_FOUND_METHOD;
$params = [];
if ( ! empty($route->__get('tokens')))
{
$tokens = array_keys($route->__get('tokens'));
foreach ($tokens as $param)
{
if (array_key_exists($param, $route->attributes))
{
$params[$param] = $route->attributes[$param];
}
}
}
$logger = $this->container->getLogger();
if ($logger !== NULL)
{
$logger->info(json_encode($params));
}
return [
'controller_name' => $controllerName,
'action_method' => $actionMethod,
'params' => $params
];
}
/**
* Get the type of route, to select the current controller
*
* @return string
*/
public function getController(): string
{
$routeType = $this->config->get('default_list');
$requestUri = $this->request->getUri()->getPath();
$path = trim($requestUri, '/');
$segments = explode('/', $path);
$controller = reset($segments);
$logger = $this->container->getLogger();
if ($logger !== NULL)
{
$logger->info('Controller: ' . $controller);
}
if (empty($controller))
{
$controller = $routeType;
}
return $controller ?? '';
}
/**
* Get the list of controllers in the default namespace
*
* @return array
*/
public function getControllerList(): array
{
$defaultNamespace = DEFAULT_CONTROLLER_NAMESPACE;
$find = ['\\', 'Aviat/AnimeClient/'];
$replace = ['/', ''];
$path = str_replace($find, $replace, $defaultNamespace);
$path = trim($path, '/');
$actualPath = realpath(_dir(SRC_DIR, $path));
$classFiles = glob("{$actualPath}/*.php");
$controllers = [];
foreach ($classFiles as $file)
{
$rawClassName = basename(str_replace('.php', '', $file));
$path = (string)StringType::from($rawClassName)->dasherize();
$className = trim($defaultNamespace . '\\' . $rawClassName, '\\');
$controllers[$path] = $className;
}
return $controllers;
}
/**
* Create the controller object and call the appropriate
* method
*
* @param string $controllerName - The full namespace of the controller class
* @param string $method
* @param array $params
* @return void
*/
protected function call($controllerName, $method, array $params): void
{
$logger = $this->container->getLogger('default');
try
{
$controller = new $controllerName($this->container);
// Run the appropriate controller method
if ($logger !== NULL)
{
$logger->debug('Dispatcher - controller arguments', $params);
}
call_user_func_array([$controller, $method], $params);
}
catch (FailedResponseException $e)
{
$controllerName = DEFAULT_CONTROLLER;
$controller = new $controllerName($this->container);
$controller->errorPage(500,
'API request timed out',
'Failed to retrieve data from API (╯°□°)╯︵ ┻━┻');
}
/* finally
{
// Log out on session/api token expiration
Event::on(EventType::UNAUTHORIZED, static function () {
$controllerName = DEFAULT_CONTROLLER;
(new $controllerName($this->container))->logout();
});
} */
}
/**
* Get the appropriate params for the error page
* passed on the failed route
*
* @return array|false
*/
protected function getErrorParams()
{
$logger = $this->container->getLogger();
$failure = $this->matcher->getFailedRoute();
if ($logger !== NULL)
{
$logger->info('Dispatcher - failed route');
$logger->info(print_r($failure, TRUE));
}
$actionMethod = ERROR_MESSAGE_METHOD;
$params = [];
switch($failure->failedRule) {
case Rule\Allows::class:
$params = [
'http_code' => 405,
'title' => '405 Method Not Allowed',
'message' => 'Invalid HTTP Verb'
];
break;
case Rule\Accepts::class:
$params = [
'http_code' => 406,
'title' => '406 Not Acceptable',
'message' => 'Unacceptable content type'
];
break;
default:
// Fall back to a 404 message
$actionMethod = NOT_FOUND_METHOD;
break;
}
return [
'params' => $params,
'action_method' => $actionMethod
];
}
/**
* Select controller based on the current url, and apply its relevent routes
*
* @return array
*/
protected function setupRoutes(): array
{
$routeType = $this->getController();
// Add routes
$routes = [];
foreach ($this->routes as $name => &$route)
{
$path = $route['path'];
unset($route['path']);
$controllerMap = $this->getControllerList();
$controllerClass = array_key_exists($routeType, $controllerMap)
? $controllerMap[$routeType]
: DEFAULT_CONTROLLER;
// If there's an explicit controller, try to find
// the full namespaced class name
if (array_key_exists('controller', $route))
{
$controllerKey = $route['controller'];
if (array_key_exists($controllerKey, $controllerMap))
{
$controllerClass = $controllerMap[$controllerKey];
}
}
// Prepend the controller to the route parameters
$route['controller'] = $controllerClass;
// Select the appropriate router method based on the http verb
$add = array_key_exists('verb', $route)
? strtolower($route['verb'])
: 'get';
// Add the route to the router object
if ( ! array_key_exists('tokens', $route))
{
$routes[] = $this->router->$add($name, $path)->defaults($route);
continue;
}
$tokens = $route['tokens'];
unset($route['tokens']);
$routes[] = $this->router->$add($name, $path)
->defaults($route)
->tokens($tokens);
}
return $routes;
}
}
// End of Dispatcher.php