WebHemi\Application\Web\WebApplication

Complexity

Total Complexity

6

Size/Duplication

Total Lines	151
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	4

Test Coverage

Coverage

0%

Importance

Changes	10
Bugs	5	Features	1

5 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	5	1
A	getContainer()	0	4	1
A	getConfig()	0	4	1
A	setEnvironmentData()	0	10	2
B	run()	0	44	1

<?php
/**
 * WebHemi.
 *
 * PHP version 5.6
 *
 * @copyright 2012 - 2016 Gixx-web (http://www.gixx-web.com)
 * @license   https://opensource.org/licenses/MIT The MIT License (MIT)
 *
 * @link      http://www.gixx-web.com
 */
namespace WebHemi\Application\Web;

use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use WebHemi\Adapter\DependencyInjection\DependencyInjectionAdapterInterface;
use WebHemi\Adapter\Http\HttpAdapterInterface;
use WebHemi\Application\ApplicationInterface;
use WebHemi\Config\ConfigInterface;
use InvalidArgumentException;

/**
 * Class WebApplication.
 */
class WebApplication implements ApplicationInterface
{
    const MODULE_ADMIN = 'Admin';
    const MODULE_SITE = 'Website';

    /** @var DependencyInjectionAdapterInterface */
    private $container;
    /** @var ConfigInterface */
    private $config;
    /** @var array  */
    private $environmentData = [
        'GET'    => [],
        'POST'   => [],
        'SERVER' => [],
        'COOKIE' => [],
        'FILES'  => [],
    ];

    /**
     * ApplicationInterface constructor.
     *
     * @param DependencyInjectionAdapterInterface $container
     * @param ConfigInterface                     $config
     */
    public function __construct(DependencyInjectionAdapterInterface $container, ConfigInterface $config)
    {
        $this->container = $container;
        $this->config = $config;
    }

    /**
     * Returns the DI Adapter instance.
     *
     * @return DependencyInjectionAdapterInterface
     */
    public function getContainer()
    {
        return $this->container;
    }

    /**
     * Returns the Configuration.
     *
     * @return ConfigInterface
     */
    public function getConfig()
    {
        return $this->config;
    }

    /**
     * Sets application environments according to the super globals.
     *
     * @param string $key
     * @param array  $data
     *
     * @throws InvalidArgumentException
     *
     * @return $this
     */
    public function setEnvironmentData($key, array $data)
    {
        if (!isset($this->environmentData[$key])) {
            throw new InvalidArgumentException(sprintf('The key "%s" is not a valid superglobal name.', $key));
        }

        $this->environmentData[$key] = $data;

        return $this;
    }

    /**
     * Runs the application. This is where the magic happens.
     * According tho the environment settings this must build up the middleware pipeline and execute it.
     *
     * Pre-Routing Middleware can be; priority < 0:
     *  - LockCheck - check if the client IP is banned > S102|S403
     *  - Auth - if the user is not logged in, but there's a "Remember me" cookie, then logs in > S102
     *
     * Routing Middleware is fixed; priority = 0:
     *  - A middleware that routes the incoming Request and delegates to the matched middleware. > S102|S404|S405
     *    The RouteResult should be attached to the Request.
     *    If the Routing is not defined explicitly in the pipeline, then it will be injected with priority 0.
     *
     * Post-Routing Middleware can be; priority between 0 and 100:
     *  - Acl - checks if the given route is available for the client. Also checks the auth > S102|S401|S403
     *  - CacheReader - checks if a suitable response body is cached. > S102|S200
     *
     * Dispatcher Middleware is fixed; priority = 100:
     *  - A middleware which gets the corresponding Action middleware and applies it > S102|S500
     *    If the Dispatcher is not defined explicitly in the pipeline, then it will be injected with priority 100.
     *    The Dispatcher should not set the response Status Code to 200 to let Post-Dispatchers to be called.
     *
     * Post-Dispatch Middleware can be; priority > 100:
     *  - CacheWriter - writes response body into DataStorage (DB, File etc.) > S102
     *
     * Final Middleware is fixed:
     *  - This middleware behaves a bit differently. It cannot be ordered, it's always the last called middleware:
     *    - when the middleware pipeline reached its end (typically when the Status Code is still 102)
     *    - when one item of the middleware pipeline returns with return response (status code is set to 200|40*|500)
     *    - when during the pipeline process an Exception is thrown.
     *
     * When the middleware pipeline is finished the application prints the header and the output.
     *
     * @return void
     */
    public function run()
    {
        $this->container
            ->setServiceArgument(HttpAdapterInterface::class, $this->environmentData['SERVER'])
            ->setServiceArgument(HttpAdapterInterface::class, $this->environmentData['GET'])
            ->setServiceArgument(HttpAdapterInterface::class, $this->environmentData['POST'])
            ->setServiceArgument(HttpAdapterInterface::class, $this->environmentData['COOKIE'])
            ->setServiceArgument(HttpAdapterInterface::class, $this->environmentData['FILES']);

        /** @var HttpAdapterInterface $httpAdapter */
        $httpAdapter = $this->getContainer()->get(HttpAdapterInterface::class);
        /** @var ServerRequestInterface $request */
        $request = $httpAdapter->getRequest();
        /** @var ResponseInterface $response */
        $response = $httpAdapter->getResponse();

        /*  -- Pseudo code for the implementation

            var request
            var response
            var pipeline
            var finalMiddleware

            FOR var middleware IN pipeline
                response = CALL middleware WITH request, response

                IF response.header.statusCode IS NOT 102 THEN
                    BREAK
                END IF
            END FOR

            response = CALL finalMiddleware WITH request, response

            SEND response.header
            PRINT response.body

            EXIT

         */

        echo '<h1>Hello world!</h1>';
        echo $request->getMethod();
        echo $response->getBody();
    }
}