MiddlewareResolver.php$0 ➔ process() - Code Metrics - Inspection of "Update README and fix code style" - platine-php/request-handler - Measure and Improve Code Quality continuously with Scrutinizer

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by nguereza

created 2023-12-02 11:29 UTC

MiddlewareResolver.php$0 ➔ process() A

↳ Parent: anonymous//src/MiddlewareResolver.php$0

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	2
dl	0
loc	11
rs	9.9
c	0
b	0
f	0

<?php

/**
 * Platine Request Handler
 *
 * Platine Request Handler is the implementation of PSR 15
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2020 Platine Request Handler
 * Copyright (c) 2020 Evgeniy Zyubin
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/**
 *  @file MiddlewareResolver.php
 *
 *  The callable resolver class
 *
 *  @package    Platine\Http\Handler
 *  @author Platine Developers Team
 *  @copyright  Copyright (c) 2020
 *  @license    http://opensource.org/licenses/MIT  MIT License
 *  @link   https://www.platine-php.com
 *  @version 1.0.0
 *  @filesource
 */

declare(strict_types=1);

namespace Platine\Http\Handler;

use Platine\Container\ContainerInterface;
use Platine\Http\Handler\Exception\MiddlewareResolverException;
use Platine\Http\ResponseInterface;
use Platine\Http\ServerRequestInterface;

class MiddlewareResolver implements MiddlewareResolverInterface
{
    /**
     * The container instance to use to resolve handler
     * @var ContainerInterface
     */
    protected ?ContainerInterface $container;

    /**
     * Create new resolver instance
     * @param ContainerInterface|null $container
     */
    public function __construct(?ContainerInterface $container = null)
    {
        $this->container = $container;
    }

    /**
     * {@inheritdoc}
     *
     * The handler must be one of:
     * - a string (class name or identifier of a container definition) or an instance
     * that implements `MiddlewareInterface` or `RequestHandlerInterface`;
     * - a callable without arguments that returns an instance of `ResponseInterface`;
     * - a callable matching signature of `MiddlewareInterface::process()`;
     *
     * @throws MiddlewareResolverException if the handler is not valid.
     */
    public function resolve($handler): MiddlewareInterface
    {
        if ($handler instanceof MiddlewareInterface) {
            return $handler;
        }

        if ($handler instanceof RequestHandlerInterface) {
            return $this->handler($handler);
        }

        if (is_string($handler)) {
            return $this->stringHandler($handler);
        }

        if (is_callable($handler)) {
            return $this->callableHandler($handler);
        }

        throw MiddlewareResolverException::create($handler);
    }

    /**
     * @param  callable $handler the callable handler
     * @return MiddlewareInterface
     *
     * @throws MiddlewareResolverException
     * if the handler does not return a `ResponseInterface` instance.
     */
    protected function callableHandler(callable $handler): MiddlewareInterface
    {
        return new class ($handler) implements MiddlewareInterface {
            /**
             *
             * @var callable
             */
            private $callable;

            /**
             * @param callable $callable
             */
            public function __construct($callable)
            {
                $this->callable = $callable;
            }

            public function process(
                ServerRequestInterface $request,
                RequestHandlerInterface $handler
            ): ResponseInterface {
                $response = ($this->callable)($request, $handler);

                if (!$response instanceof ResponseInterface) {
                    throw MiddlewareResolverException::forCallableMissingResponse($response);
                }

                return $response;
            }
        };
    }

    /**
     * @param  RequestHandlerInterface $handler the request handler
     * @return MiddlewareInterface
     */
    protected function handler(RequestHandlerInterface $handler): MiddlewareInterface
    {
        return new class ($handler) implements MiddlewareInterface {
            private RequestHandlerInterface $handler;

            public function __construct(RequestHandlerInterface $handler)
            {
                $this->handler = $handler;
            }

            public function process(
                ServerRequestInterface $request,
                RequestHandlerInterface $handler
            ): ResponseInterface {
                return $this->handler->handle($request);
            }
        };
    }

    /**
     * @param  string $handler the string handler name
     * @return MiddlewareInterface
     *
     * @throws MiddlewareResolverException if the handler is not valid
     */
    protected function stringHandler(string $handler): MiddlewareInterface
    {
        return new class ($handler, $this->container) implements MiddlewareInterface {
            private string $handler;
            private ?ContainerInterface $container;

            public function __construct(string $handler, ?ContainerInterface $container)
            {
                $this->handler = $handler;
                $this->container = $container;
            }

            public function process(
                ServerRequestInterface $request,
                RequestHandlerInterface $handler
            ): ResponseInterface {
                $name = $this->handler;
                $class = $name;
                $method = null;
                $instance = null;

                //if the value is something like Namespace1\Namespace2\ClassName@Method
                if (strpos($name, '@') !== false) {
                    $parts = explode('@', $name, 2);
                    $class = $parts[0];
                    $method = $parts[1];
                }

                if ($this->container !== null && $this->container->has($class)) {
                    $instance = $this->container->get($class);
                } elseif (class_exists($class)) {
                    $instance = new $class();
                }


                if ($instance instanceof MiddlewareInterface) {
                    return $instance->process($request, $handler);
                }

                if ($instance instanceof RequestHandlerInterface) {
                    return $instance->handle($request);
                }

                if ($method !== null && method_exists($instance, $method)) {
                    return $instance->{$method}($request, $handler);
                }

                throw MiddlewareResolverException::forStringNotConvertedToInstance($this->handler);
            }
        };
    }
}


1			<?php
2
3			/**
4			* Platine Request Handler
5			*
6			* Platine Request Handler is the implementation of PSR 15
7			*
8			* This content is released under the MIT License (MIT)
9			*
10			* Copyright (c) 2020 Platine Request Handler
11			* Copyright (c) 2020 Evgeniy Zyubin
12			*
13			* Permission is hereby granted, free of charge, to any person obtaining a copy
14			* of this software and associated documentation files (the "Software"), to deal
15			* in the Software without restriction, including without limitation the rights
16			* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
17			* copies of the Software, and to permit persons to whom the Software is
18			* furnished to do so, subject to the following conditions:
19			*
20			* The above copyright notice and this permission notice shall be included in all
21			* copies or substantial portions of the Software.
22			*
23			* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24			* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25			* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
26			* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27			* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
28			* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29			* SOFTWARE.
30			*/
31
32			/**
33			* @file MiddlewareResolver.php
34			*
35			* The callable resolver class
36			*
37			* @package Platine\Http\Handler
38			* @author Platine Developers Team
39			* @copyright Copyright (c) 2020
40			* @license http://opensource.org/licenses/MIT MIT License
41			* @link https://www.platine-php.com
42			* @version 1.0.0
43			* @filesource
44			*/
45
46			declare(strict_types=1);
47
48			namespace Platine\Http\Handler;
49
50			use Platine\Container\ContainerInterface;
51			use Platine\Http\Handler\Exception\MiddlewareResolverException;
52			use Platine\Http\ResponseInterface;
53			use Platine\Http\ServerRequestInterface;
54
55			class MiddlewareResolver implements MiddlewareResolverInterface
56			{
57			/**
58			* The container instance to use to resolve handler
59			* @var ContainerInterface
60			*/
61			protected ?ContainerInterface $container;
62
63			/**
64			* Create new resolver instance
65			* @param ContainerInterface\|null $container
66			*/
67			public function __construct(?ContainerInterface $container = null)
68			{
69			$this->container = $container;
70			}
71
72			/**
73			* {@inheritdoc}
74			*
75			* The handler must be one of:
76			* - a string (class name or identifier of a container definition) or an instance
77			* that implements `MiddlewareInterface` or `RequestHandlerInterface`;
78			* - a callable without arguments that returns an instance of `ResponseInterface`;
79			* - a callable matching signature of `MiddlewareInterface::process()`;
80			*
81			* @throws MiddlewareResolverException if the handler is not valid.
82			*/
83			public function resolve($handler): MiddlewareInterface
84			{
85			if ($handler instanceof MiddlewareInterface) {
86			return $handler;
87			}
88
89			if ($handler instanceof RequestHandlerInterface) {
90			return $this->handler($handler);
91			}
92
93			if (is_string($handler)) {
94			return $this->stringHandler($handler);
95			}
96
97			if (is_callable($handler)) {
98			return $this->callableHandler($handler);
99			}
100
101			throw MiddlewareResolverException::create($handler);
102			}
103
104			/**
105			* @param callable $handler the callable handler
106			* @return MiddlewareInterface
107			*
108			* @throws MiddlewareResolverException
109			* if the handler does not return a `ResponseInterface` instance.
110			*/
111			protected function callableHandler(callable $handler): MiddlewareInterface
112			{
113			return new class ($handler) implements MiddlewareInterface {
114			/**
115			*
116			* @var callable
117			*/
118			private $callable;
119
120			/**
121			* @param callable $callable
122			*/
123			public function __construct($callable)
124			{
125			$this->callable = $callable;
126			}
127
128			public function process(
129			ServerRequestInterface $request,
130			RequestHandlerInterface $handler
131			): ResponseInterface {
132			$response = ($this->callable)($request, $handler);
133
134			if (!$response instanceof ResponseInterface) {
135			throw MiddlewareResolverException::forCallableMissingResponse($response);
136			}
137
138			return $response;
139			}
140			};
141			}
142
143			/**
144			* @param RequestHandlerInterface $handler the request handler
145			* @return MiddlewareInterface
146			*/
147			protected function handler(RequestHandlerInterface $handler): MiddlewareInterface
148			{
149			return new class ($handler) implements MiddlewareInterface {
150			private RequestHandlerInterface $handler;
151
152			public function __construct(RequestHandlerInterface $handler)
153			{
154			$this->handler = $handler;
155			}
156
157			public function process(
158			ServerRequestInterface $request,
159			RequestHandlerInterface $handler
160			): ResponseInterface {
161			return $this->handler->handle($request);
162			}
163			};
164			}
165
166			/**
167			* @param string $handler the string handler name
168			* @return MiddlewareInterface
169			*
170			* @throws MiddlewareResolverException if the handler is not valid
171			*/
172			protected function stringHandler(string $handler): MiddlewareInterface
173			{
174			return new class ($handler, $this->container) implements MiddlewareInterface {
175			private string $handler;
176			private ?ContainerInterface $container;
177
178			public function __construct(string $handler, ?ContainerInterface $container)
179			{
180			$this->handler = $handler;
181			$this->container = $container;
182			}
183
184			public function process(
185			ServerRequestInterface $request,
186			RequestHandlerInterface $handler
187			): ResponseInterface {
188			$name = $this->handler;
189			$class = $name;
190			$method = null;
191			$instance = null;
192
193			//if the value is something like Namespace1\Namespace2\ClassName@Method
194			if (strpos($name, '@') !== false) {
195			$parts = explode('@', $name, 2);
196			$class = $parts[0];
197			$method = $parts[1];
198			}
199
200			if ($this->container !== null && $this->container->has($class)) {
201			$instance = $this->container->get($class);
202			} elseif (class_exists($class)) {
203			$instance = new $class();
204			}
205
206
207			if ($instance instanceof MiddlewareInterface) {
208			return $instance->process($request, $handler);
209			}
210
211			if ($instance instanceof RequestHandlerInterface) {
212			return $instance->handle($request);
213			}
214
215			if ($method !== null && method_exists($instance, $method)) {
216			return $instance->{$method}($request, $handler);
217			}
218
219			throw MiddlewareResolverException::forStringNotConvertedToInstance($this->handler);
220			}
221			};
222			}
223			}
224

platine-php / request-handler

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MiddlewareResolver.php$0 ➔ process() A

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