UrlParserBase::getMiddlewareResult() - Code Metrics - Inspection of "feature/Total refacctoring of the code and unit-te..." - alexdodonov/mezon-router - Measure and Improve Code Quality continuously with Scrutinizer

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by Alex

created 2021-12-05 16:16 UTC

UrlParserBase::getMiddlewareResult() B

↳ Parent: UrlParserBase

Complexity

Conditions	9
Paths	28

Size

Total Lines	40
Code Lines	20

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	1	Features	0

Metric	Value
eloc	20
c	1
b	1
f	0
dl	0
loc	40
rs	8.0555
cc	9
nc	28
nop	1

<?php
declare(strict_types = 1);
namespace Mezon\Router;

/**
 * Trait UrlParserBase
 *
 * @package Router
 * @author Dodonov A.A.
 * @version v.1.0 (2021/09/27)
 * @copyright Copyright (c) 2021, aeon.org
 */
trait UrlParserBase
{

    /**
     * Middleware for routes processing
     *
     * @var array<string, callable[]>
     */
    protected $middleware = [];

    /**
     * Method registeres middleware for the router
     *
     * @param callable $middleware
     *            middleware
     */
    public function registerMiddleware(string $router, callable $middleware): void
    {
        $routerTrimmed = trim($router, '/');

        if (! isset($this->middleware[$routerTrimmed])) {
            $this->middleware[$routerTrimmed] = [];
        }

        $this->middleware[$routerTrimmed][] = $middleware;
    }

    /**
     * Parsed parameters of the calling router
     *
     * @var string[]
     */
    protected $parameters = [];

    /**
     * Method returns route parameter
     *
     * @param string $name
     *            route parameter
     * @return string route parameter
     */
    public function getParam(string $name): string
    {
        if (! isset($this->parameters[$name])) {
            throw (new \Exception('Parameter ' . $name . ' was not found in route', - 1));
        }

        return $this->parameters[$name];
    }

    /**
     * Does parameter exists
     *
     * @param string $name
     *            param name
     * @return bool true if the parameter exists
     */
    public function hasParam(string $name): bool
    {
        return isset($this->parameters[$name]);
    }

    /**
     * Method executes route handler
     *
     * @param
     *            callable|string|array{0: string, 1: string} $processor processor
     * @psalm-param callable|string|array{0: string, 1: string} $processor
     * @param string $route
     *            route
     * @return mixed route handler execution result
     */
    protected function executeHandler($processor, string $route)
    {
        if ($this->isFunction($processor)) {
            return call_user_func_array($processor, $this->getMiddlewareResult($route));
        }

        $functionName = $processor[1] ?? null;

        if ($this->canBeCalled($processor, $functionName)) {
            // passing route path and parameters
            return call_user_func_array($processor, $this->getMiddlewareResult($route));
        } else {
            $callableDescription = Utils::getCallableDescription($processor);

            if ($this->methodDoesNotExists($processor, $functionName)) {
                throw (new \Exception("'$callableDescription' does not exists"));
            } else {
                // @codeCoverageIgnoreStart
                throw (new \Exception("'$callableDescription' must be callable entity"));
                // @codeCoverageIgnoreEnd
            }
        }
    }

    /**
     * Method returns middleware processing result
     *
     * @param string $route
     *            processed route
     * @return array middleware result
     */
    private function getMiddlewareResult(string $route): array
    {
        $middleWares = [];

        if (isset($this->middleware['*'])) {
            $middleWares = $this->middleware['*'];
        }

        if ($this->calledRoute !== '*' && isset($this->middleware[$this->calledRoute])) {
            $middleWares = array_merge($middleWares, $this->middleware[$this->calledRoute]);
        }

        $result = [
            $route,
            $this->parameters
        ];

        if (! count($middleWares)) {
            return $result;
        }

        /** @var callable $middleWare */
        foreach ($middleWares as $middleWare) {
            /** @var array{0: string, 1: string[]}|null $result */
            $result = call_user_func($middleWare, $route, $this->parameters);

            if (is_array($result)) {
                if (array_key_exists(0, $result)) {
                    $route = $result[0];
                }

                if (array_key_exists(1, $result)) {
                    $this->parameters = $result[1];
                }
            }
        }

        return [
            $route,
            $this->parameters
        ];
    }

    /**
     * Method searches dynamic route processor
     *
     * @param string $route
     *            route
     * @param string $requestMethod
     *            request method
     * @return array{0: string, 1:string}|callable|string|false route's handler or false in case the handler was not found
     */
    abstract protected function getDynamicRouteProcessor(string $route, string $requestMethod = '');

    /**
     * Method searches dynamic route processor
     *
     * @param string $route
     *            route
     * @return mixed|false result of the router's call or false if any error occured
     */
    public function findDynamicRouteProcessor(string $route)
    {
        $processor = $this->getDynamicRouteProcessor($route);

        if ($processor === false) {
            return false;
        }

        return $this->executeHandler($processor, $route);
    }

    /**
     * Checking that method exists
     *
     * @param mixed $processor
     *            callback object
     * @param ?string $functionName
     *            callback method
     * @return bool true if method does not exists
     */
    private function methodDoesNotExists($processor, ?string $functionName): bool
    {
        return $functionName === null || (isset($processor[0]) && is_object($processor[0]) && method_exists($processor[0], $functionName) === false);
    }

    /**
     * Checking that handler can be called
     *
     * @param object|array|callable|string $processor
     *            callback object
     * @param ?string $functionName
     *            callback method
     * @return bool
     * @psalm-suppress InvalidArrayAccess
     */
    private function canBeCalled($processor, ?string $functionName): bool
    {
        return is_callable($processor) && ($functionName !== null && is_object($processor[0]) && (method_exists($processor[0], $functionName) || isset($processor[0]->$functionName)));
    }

    /**
     * Checking that processor can be called as function
     *
     * @param mixed $processor
     *            route processor
     * @return bool true if the $processor can be called as function
     */
    private function isFunction($processor): bool
    {
        return is_callable($processor) && is_array($processor) === false;
    }

    /**
     * Method returns request method
     *
     * @return string request method
     */
    private function getRequestMethod(): string
    {
        return isset($_SERVER['REQUEST_METHOD']) ? (string) $_SERVER['REQUEST_METHOD'] : 'GET';
    }
}


1			<?php
2			declare(strict_types = 1);
3			namespace Mezon\Router;
4
5			/**
6			* Trait UrlParserBase
7			*
8			* @package Router
9			* @author Dodonov A.A.
10			* @version v.1.0 (2021/09/27)
11			* @copyright Copyright (c) 2021, aeon.org
12			*/
13			trait UrlParserBase
14			{
15
16			/**
17			* Middleware for routes processing
18			*
19			* @var array<string, callable[]>
20			*/
21			protected $middleware = [];
22
23			/**
24			* Method registeres middleware for the router
25			*
26			* @param callable $middleware
27			* middleware
28			*/
29			public function registerMiddleware(string $router, callable $middleware): void
30			{
31			$routerTrimmed = trim($router, '/');
32
33			if (! isset($this->middleware[$routerTrimmed])) {
34			$this->middleware[$routerTrimmed] = [];
35			}
36
37			$this->middleware[$routerTrimmed][] = $middleware;
38			}
39
40			/**
41			* Parsed parameters of the calling router
42			*
43			* @var string[]
44			*/
45			protected $parameters = [];
46
47			/**
48			* Method returns route parameter
49			*
50			* @param string $name
51			* route parameter
52			* @return string route parameter
53			*/
54			public function getParam(string $name): string
55			{
56			if (! isset($this->parameters[$name])) {
57			throw (new \Exception('Parameter ' . $name . ' was not found in route', - 1));
58			}
59
60			return $this->parameters[$name];
61			}
62
63			/**
64			* Does parameter exists
65			*
66			* @param string $name
67			* param name
68			* @return bool true if the parameter exists
69			*/
70			public function hasParam(string $name): bool
71			{
72			return isset($this->parameters[$name]);
73			}
74
75			/**
76			* Method executes route handler
77			*
78			* @param
79			* callable\|string\|array{0: string, 1: string} $processor processor
80			* @psalm-param callable\|string\|array{0: string, 1: string} $processor
81			* @param string $route
82			* route
83			* @return mixed route handler execution result
84			*/
85			protected function executeHandler($processor, string $route)
86			{
87			if ($this->isFunction($processor)) {
88			return call_user_func_array($processor, $this->getMiddlewareResult($route));
89			}
90
91			$functionName = $processor[1] ?? null;
92
93			if ($this->canBeCalled($processor, $functionName)) {
94			// passing route path and parameters
95			return call_user_func_array($processor, $this->getMiddlewareResult($route));
96			} else {
97			$callableDescription = Utils::getCallableDescription($processor);
98
99			if ($this->methodDoesNotExists($processor, $functionName)) {
100			throw (new \Exception("'$callableDescription' does not exists"));
101			} else {
102			// @codeCoverageIgnoreStart
103			throw (new \Exception("'$callableDescription' must be callable entity"));
104			// @codeCoverageIgnoreEnd
105			}
106			}
107			}
108
109			/**
110			* Method returns middleware processing result
111			*
112			* @param string $route
113			* processed route
114			* @return array middleware result
115			*/
116			private function getMiddlewareResult(string $route): array
117			{
118			$middleWares = [];
119
120			if (isset($this->middleware['*'])) {
121			$middleWares = $this->middleware['*'];
122			}
123
124			if ($this->calledRoute !== '*' && isset($this->middleware[$this->calledRoute])) {
125			$middleWares = array_merge($middleWares, $this->middleware[$this->calledRoute]);
126			}
127
128			$result = [
129			$route,
130			$this->parameters
131			];
132
133			if (! count($middleWares)) {
134			return $result;
135			}
136
137			/** @var callable $middleWare */
138			foreach ($middleWares as $middleWare) {
139			/** @var array{0: string, 1: string[]}\|null $result */
140			$result = call_user_func($middleWare, $route, $this->parameters);
141
142			if (is_array($result)) {
143			if (array_key_exists(0, $result)) {
144			$route = $result[0];
145			}
146
147			if (array_key_exists(1, $result)) {
148			$this->parameters = $result[1];
149			}
150			}
151			}
152
153			return [
154			$route,
155			$this->parameters
156			];
157			}
158
159			/**
160			* Method searches dynamic route processor
161			*
162			* @param string $route
163			* route
164			* @param string $requestMethod
165			* request method
166			* @return array{0: string, 1:string}\|callable\|string\|false route's handler or false in case the handler was not found
167			*/
168			abstract protected function getDynamicRouteProcessor(string $route, string $requestMethod = '');
169
170			/**
171			* Method searches dynamic route processor
172			*
173			* @param string $route
174			* route
175			* @return mixed\|false result of the router's call or false if any error occured
176			*/
177			public function findDynamicRouteProcessor(string $route)
178			{
179			$processor = $this->getDynamicRouteProcessor($route);
180
181			if ($processor === false) {
182			return false;
183			}
184
185			return $this->executeHandler($processor, $route);
186			}
187
188			/**
189			* Checking that method exists
190			*
191			* @param mixed $processor
192			* callback object
193			* @param ?string $functionName
194			* callback method
195			* @return bool true if method does not exists
196			*/
197			private function methodDoesNotExists($processor, ?string $functionName): bool
198			{
199			return $functionName === null \|\| (isset($processor[0]) && is_object($processor[0]) && method_exists($processor[0], $functionName) === false);
200			}
201
202			/**
203			* Checking that handler can be called
204			*
205			* @param object\|array\|callable\|string $processor
206			* callback object
207			* @param ?string $functionName
208			* callback method
209			* @return bool
210			* @psalm-suppress InvalidArrayAccess
211			*/
212			private function canBeCalled($processor, ?string $functionName): bool
213			{
214			return is_callable($processor) && ($functionName !== null && is_object($processor[0]) && (method_exists($processor[0], $functionName) \|\| isset($processor[0]->$functionName)));
215			}
216
217			/**
218			* Checking that processor can be called as function
219			*
220			* @param mixed $processor
221			* route processor
222			* @return bool true if the $processor can be called as function
223			*/
224			private function isFunction($processor): bool
225			{
226			return is_callable($processor) && is_array($processor) === false;
227			}
228
229			/**
230			* Method returns request method
231			*
232			* @return string request method
233			*/
234			private function getRequestMethod(): string
235			{
236			return isset($_SERVER['REQUEST_METHOD']) ? (string) $_SERVER['REQUEST_METHOD'] : 'GET';
237			}
238			}
239

alexdodonov / mezon-router

Push — master ( a4ddd3...82bd79 )

UrlParserBase::getMiddlewareResult() B

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