Locale::withIgnoredRequests() - Code Metrics - Inspection of "Fix docs and naming (#61)" - yiisoft/yii-middleware - Measure and Improve Code Quality continuously with Scrutinizer

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created 2023-05-07 06:50 UTC

Locale::withIgnoredRequests() A

↳ Parent: Locale

Complexity

Conditions	1
Paths	1

Size

Total Lines	5
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	1
eloc	3
c	1
b	0
f	0
nc	1
nop	1
dl	0
loc	5
ccs	4
cts	4
cp	1
crap	1
rs	10

<?php

declare(strict_types=1);

namespace Yiisoft\Yii\Middleware;

use DateInterval;
use Psr\Http\Message\ResponseFactoryInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;
use Psr\Log\LoggerInterface;
use Yiisoft\Cookies\Cookie;
use Yiisoft\Http\Header;
use Yiisoft\Http\Method;
use Yiisoft\Http\Status;
use Yiisoft\Router\UrlGeneratorInterface;
use Yiisoft\Session\SessionInterface;
use Yiisoft\Strings\WildcardPattern;
use Yiisoft\Translator\TranslatorInterface;
use Yiisoft\Yii\Middleware\Exception\InvalidLocalesFormatException;

/**
 * Locale middleware supports locale-based routing and configures translator and URL generator.
 * You should place it before `Route` middleware in the middleware list.
 */
final class Locale implements MiddlewareInterface
{
    private const DEFAULT_LOCALE = 'en';
    private const DEFAULT_LOCALE_NAME = '_language';

    private bool $saveLocale = true;
    private bool $detectLocale = false;
    private string $defaultLocale = self::DEFAULT_LOCALE;
    private string $queryParameterName = self::DEFAULT_LOCALE_NAME;
    private string $sessionName = self::DEFAULT_LOCALE_NAME;
    private ?DateInterval $cookieDuration;

    /**
     * @param TranslatorInterface $translator Translator instance to set locale for.
     * @param UrlGeneratorInterface $urlGenerator URL generator instance to set locale for.
     * @param SessionInterface $session Session instance to save locale to.
     * @param LoggerInterface $logger Logger instance to write debug logs to.
     * @param ResponseFactoryInterface $responseFactory Response factory used to create redirect responses.
     * @param array $supportedLocales List of supported locales in key-value format such as `['ru' => 'ru_RU', 'uz' => 'uz_UZ']`.
     * @param string[] $ignoredRequestUrlPatterns {@see WildcardPattern Patterns} for ignoring requests with URLs matching.
     * @param bool $secureCookie If middleware should flag locale cookie as "secure."
     */
    public function __construct(
        private TranslatorInterface $translator,
        private UrlGeneratorInterface $urlGenerator,
        private SessionInterface $session,
        private LoggerInterface $logger,
        private ResponseFactoryInterface $responseFactory,
        private array $supportedLocales = [],
        private array $ignoredRequestUrlPatterns = [],
        private bool $secureCookie = false,
    ) {
        $this->cookieDuration = new DateInterval('P30D');
    }

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

        $this->assertLocalesFormat();

        $uri = $request->getUri();
        $path = $uri->getPath();
        $query = $uri->getQuery();

        $locale = $this->getLocaleFromPath($path);

        if ($locale !== null) {
            $this->translator->setLocale($this->supportedLocales[$locale]);
            $this->urlGenerator->setDefaultArgument($this->queryParameterName, $locale);

            $response = $handler->handle($request);
            $newPath = null;
            if ($this->isDefaultLocale($locale) && $request->getMethod() === Method::GET) {
                $length = strlen($locale);
                $newPath = substr($path, $length + 1);
            }
            return $this->applyLocaleFromPath($locale, $response, $query, $newPath);
        }
        if ($this->saveLocale) {
            $locale = $this->getLocaleFromRequest($request);
        }
        if ($locale === null && $this->detectLocale) {
            $locale = $this->detectLocale($request);
        }
        if ($locale === null || $this->isDefaultLocale($locale) || $this->isRequestIgnored($request)) {
            $this->urlGenerator->setDefaultArgument($this->queryParameterName, null);
            $request = $request->withUri($uri->withPath('/' . $this->defaultLocale . $path));
            return $handler->handle($request);
        }

        $this->translator->setLocale($this->supportedLocales[$locale]);
        $this->urlGenerator->setDefaultArgument($this->queryParameterName, $locale);

        if ($request->getMethod() === Method::GET) {
            $location = $this->getBaseUrl() . '/' . $locale . $path . ($query !== '' ? '?' . $query : '');
            return $this->responseFactory
                ->createResponse(Status::FOUND)
                ->withHeader(Header::LOCATION, $location);
        }


        return $handler->handle($request);
    }

    private function applyLocaleFromPath(
        string $locale,
        ResponseInterface $response,
        string $query,
        ?string $newPath = null,
    ): ResponseInterface {
        if ($newPath === '') {
            $newPath = '/';
        }

        if ($newPath !== null) {
            $location = $this->getBaseUrl() . $newPath . ($query !== '' ? '?' . $query : '');
            $response = $this->responseFactory
                ->createResponse(Status::FOUND)
                ->withHeader(Header::LOCATION, $location);
        }
        if ($this->saveLocale) {
            $response = $this->saveLocale($locale, $response);
        }
        return $response;
    }

    private function getLocaleFromPath(string $path): ?string
    {
        $parts = [];
        /**
         * @var string $code
         * @var string $locale
         */
        foreach ($this->supportedLocales as $code => $locale) {
            $parts[] = $code;
            $parts[] = $locale;
        }

        $pattern = implode('|', $parts);
        if (preg_match("#^/($pattern)\b(/?)#i", $path, $matches)) {
            $matchedLocale = $matches[1];
            if (!isset($this->supportedLocales[$matchedLocale])) {
                $matchedLocale = $this->parseLocale($matchedLocale);
            }
            if (isset($this->supportedLocales[$matchedLocale])) {
                $this->logger->debug(sprintf("Locale '%s' found in URL", $matchedLocale));
                return $matchedLocale;
            }
        }
        return null;
    }

    private function getLocaleFromRequest(ServerRequestInterface $request): ?string
    {
        /** @var array<string, string> $cookies */
        $cookies = $request->getCookieParams();
        if (isset($cookies[$this->sessionName])) {
            $this->logger->debug(sprintf("Locale '%s' found in cookies", $cookies[$this->sessionName]));
            return $this->parseLocale($cookies[$this->sessionName]);
        }
        /** @var array<string, string> $queryParameters */
        $queryParameters = $request->getQueryParams();
        if (isset($queryParameters[$this->queryParameterName])) {
            $this->logger->debug(
                sprintf("Locale '%s' found in query string", $queryParameters[$this->queryParameterName])
            );
            return $this->parseLocale($queryParameters[$this->queryParameterName]);
        }
        return null;
    }

    private function isDefaultLocale(string $locale): bool
    {
        return $locale === $this->defaultLocale || $this->supportedLocales[$locale] === $this->defaultLocale;
    }

    private function detectLocale(ServerRequestInterface $request): ?string
    {
        foreach ($request->getHeader(Header::ACCEPT_LANGUAGE) as $language) {
            if (!isset($this->supportedLocales[$language])) {
                $language = $this->parseLocale($language);
            }
            if (isset($this->supportedLocales[$language])) {
                return $language;
            }
        }
        return null;
    }

    private function saveLocale(string $locale, ResponseInterface $response): ResponseInterface
    {
        $this->logger->debug('Saving found locale to session and cookies.');
        $this->session->set($this->sessionName, $locale);
        $cookie = new Cookie(name: $this->sessionName, value: $locale, secure: $this->secureCookie);
        if ($this->cookieDuration !== null) {
            $cookie = $cookie->withMaxAge($this->cookieDuration);
        }
        return $cookie->addToResponse($response);
    }

    private function parseLocale(string $locale): string
    {
        if (str_contains($locale, '-')) {
            [$locale] = explode('-', $locale, 2);
        } elseif (str_contains($locale, '_')) {
            [$locale] = explode('_', $locale, 2);
        }

        return $locale;
    }

    private function isRequestIgnored(ServerRequestInterface $request): bool
    {
        foreach ($this->ignoredRequestUrlPatterns as $ignoredRequest) {
            if ((new WildcardPattern($ignoredRequest))->match($request->getUri()->getPath())) {
                return true;
            }
        }
        return false;
    }

    /**
     * @psalm-assert array<string, string> $this->supportedLocales
     *
     * @throws InvalidLocalesFormatException
     */
    private function assertLocalesFormat(): void
    {
        foreach ($this->supportedLocales as $code => $locale) {
            if (!is_string($code) || !is_string($locale)) {
                throw new InvalidLocalesFormatException();
            }
        }
    }

    private function getBaseUrl(): string
    {
        return rtrim($this->urlGenerator->getUriPrefix(), '/');
    }

    /**
     * Return new instance with supported locales specified.
     *
     * @param array $locales List of supported locales in key-value format such as `['ru' => 'ru_RU', 'uz' => 'uz_UZ']`.
     */
    public function withSupportedLocales(array $locales): self
    {
        $new = clone $this;
        $new->supportedLocales = $locales;
        return $new;
    }

    /**
     * Return new instance with default locale specified.
     *
     * @param string $defaultLocale Default locale.
     */
    public function withDefaultLocale(string $defaultLocale): self
    {
        $new = clone $this;
        $new->defaultLocale = $defaultLocale;
        return $new;
    }

    /**
     * Return new instance with the name of the query string parameter to look for locale.
     *
     * @param string $queryParameterName Name of the query string parameter.
     */
    public function withQueryParameterName(string $queryParameterName): self
    {
        $new = clone $this;
        $new->queryParameterName = $queryParameterName;
        return $new;
    }

    /**
     * Return new instance with the name of session parameter to store found locale.
     *
     * @param string $sessionName Name of session parameter.
     */
    public function withSessionName(string $sessionName): self
    {
        $new = clone $this;
        $new->sessionName = $sessionName;
        return $new;
    }

    /**
     * Return new instance with enabled or disabled saving of locale.
     *
     * @param bool $enabled If middleware should save locale into session and cookies.
     */
    public function withSaveLocale(bool $enabled): self
    {
        $new = clone $this;
        $new->saveLocale = $enabled;
        return $new;
    }

    /**
     * Return new instance with enabled or disabled detection of locale based on `Accept-Language` header.
     *
     * @param bool $enabled Whether middleware should detect locale.
     */
    public function withDetectLocale(bool $enabled): self
    {
        $new = clone $this;
        $new->detectLocale = $enabled;
        return $new;
    }

    /**
     * Return new instance with {@see WildcardPattern patterns} for ignoring requests with URLs matching.
     *
     * @param string[] $patterns Patterns.
     */
    public function withIgnoredRequestUrlPatterns(array $patterns): self
    {
        $new = clone $this;
        $new->ignoredRequestUrlPatterns = $patterns;
        return $new;
    }

    /**
     * Return new instance with enabled or disabled secure cookies.
     *
     * @param bool $secure If middleware should flag locale cookie as "secure."
     */
    public function withSecureCookie(bool $secure): self
    {
        $new = clone $this;
        $new->secureCookie = $secure;
        return $new;
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Yiisoft\Yii\Middleware;
6
7		use DateInterval;
8		use Psr\Http\Message\ResponseFactoryInterface;
9		use Psr\Http\Message\ResponseInterface;
10		use Psr\Http\Message\ServerRequestInterface;
11		use Psr\Http\Server\MiddlewareInterface;
12		use Psr\Http\Server\RequestHandlerInterface;
13		use Psr\Log\LoggerInterface;
14		use Yiisoft\Cookies\Cookie;
15		use Yiisoft\Http\Header;
16		use Yiisoft\Http\Method;
17		use Yiisoft\Http\Status;
18		use Yiisoft\Router\UrlGeneratorInterface;
19		use Yiisoft\Session\SessionInterface;
20		use Yiisoft\Strings\WildcardPattern;
21		use Yiisoft\Translator\TranslatorInterface;
22		use Yiisoft\Yii\Middleware\Exception\InvalidLocalesFormatException;
23
24		/**
25		* Locale middleware supports locale-based routing and configures translator and URL generator.
26		* You should place it before `Route` middleware in the middleware list.
27		*/
28		final class Locale implements MiddlewareInterface
29		{
30		private const DEFAULT_LOCALE = 'en';
31		private const DEFAULT_LOCALE_NAME = '_language';
32
33		private bool $saveLocale = true;
34		private bool $detectLocale = false;
35		private string $defaultLocale = self::DEFAULT_LOCALE;
36		private string $queryParameterName = self::DEFAULT_LOCALE_NAME;
37		private string $sessionName = self::DEFAULT_LOCALE_NAME;
38		private ?DateInterval $cookieDuration;
39
40		/**
41		* @param TranslatorInterface $translator Translator instance to set locale for.
42		* @param UrlGeneratorInterface $urlGenerator URL generator instance to set locale for.
43		* @param SessionInterface $session Session instance to save locale to.
44		* @param LoggerInterface $logger Logger instance to write debug logs to.
45		* @param ResponseFactoryInterface $responseFactory Response factory used to create redirect responses.
46		* @param array $supportedLocales List of supported locales in key-value format such as `['ru' => 'ru_RU', 'uz' => 'uz_UZ']`.
47		* @param string[] $ignoredRequestUrlPatterns {@see WildcardPattern Patterns} for ignoring requests with URLs matching.
48		* @param bool $secureCookie If middleware should flag locale cookie as "secure."
49		*/
50	19	public function __construct(
51		private TranslatorInterface $translator,
52		private UrlGeneratorInterface $urlGenerator,
53		private SessionInterface $session,
54		private LoggerInterface $logger,
55		private ResponseFactoryInterface $responseFactory,
56		private array $supportedLocales = [],
57		private array $ignoredRequestUrlPatterns = [],
58		private bool $secureCookie = false,
59		) {
60	19	$this->cookieDuration = new DateInterval('P30D');
61		}
62
63	18	public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
64		{
65	18	if ($this->supportedLocales === []) {
66	1	return $handler->handle($request);
67		}
68
69	17	$this->assertLocalesFormat();
70
71	16	$uri = $request->getUri();
72	16	$path = $uri->getPath();
73	16	$query = $uri->getQuery();
74
75	16	$locale = $this->getLocaleFromPath($path);
76
77	16	if ($locale !== null) {
78	9	$this->translator->setLocale($this->supportedLocales[$locale]);
79	9	$this->urlGenerator->setDefaultArgument($this->queryParameterName, $locale);
80
81	9	$response = $handler->handle($request);
82	9	$newPath = null;
83	9	if ($this->isDefaultLocale($locale) && $request->getMethod() === Method::GET) {
84	3	$length = strlen($locale);
85	3	$newPath = substr($path, $length + 1);
86		}
87	9	return $this->applyLocaleFromPath($locale, $response, $query, $newPath);
88		}
89	7	if ($this->saveLocale) {
90	7	$locale = $this->getLocaleFromRequest($request);
91		}
92	7	if ($locale === null && $this->detectLocale) {
93	2	$locale = $this->detectLocale($request);
94		}
95	7	if ($locale === null \|\| $this->isDefaultLocale($locale) \|\| $this->isRequestIgnored($request)) {
96	2	$this->urlGenerator->setDefaultArgument($this->queryParameterName, null);
97	2	$request = $request->withUri($uri->withPath('/' . $this->defaultLocale . $path));
98	2	return $handler->handle($request);
99		}
100
101	5	$this->translator->setLocale($this->supportedLocales[$locale]);
102	5	$this->urlGenerator->setDefaultArgument($this->queryParameterName, $locale);
103
104	5	if ($request->getMethod() === Method::GET) {
105	4	$location = $this->getBaseUrl() . '/' . $locale . $path . ($query !== '' ? '?' . $query : '');
106	4	return $this->responseFactory
107	4	->createResponse(Status::FOUND)
108	4	->withHeader(Header::LOCATION, $location);
109		}
110
111
112	1	return $handler->handle($request);
113		}
114
115	9	private function applyLocaleFromPath(
116		string $locale,
117		ResponseInterface $response,
118		string $query,
119		?string $newPath = null,
120		): ResponseInterface {
121	9	if ($newPath === '') {
122	1	$newPath = '/';
123		}
124
125	9	if ($newPath !== null) {
126	3	$location = $this->getBaseUrl() . $newPath . ($query !== '' ? '?' . $query : '');
127	3	$response = $this->responseFactory
128	3	->createResponse(Status::FOUND)
129	3	->withHeader(Header::LOCATION, $location);
130		}
131	9	if ($this->saveLocale) {
132	9	$response = $this->saveLocale($locale, $response);
133		}
134	9	return $response;
135		}
136
137	16	private function getLocaleFromPath(string $path): ?string
138		{
139	16	$parts = [];
140		/**
141		* @var string $code
142		* @var string $locale
143		*/
144	16	foreach ($this->supportedLocales as $code => $locale) {
145	16	$parts[] = $code;
146	16	$parts[] = $locale;
147		}
148
149	16	$pattern = implode('\|', $parts);
150	16	if (preg_match("#^/($pattern)\b(/?)#i", $path, $matches)) {
151	9	$matchedLocale = $matches[1];
152	9	if (!isset($this->supportedLocales[$matchedLocale])) {
153	1	$matchedLocale = $this->parseLocale($matchedLocale);
154		}
155	9	if (isset($this->supportedLocales[$matchedLocale])) {
156	9	$this->logger->debug(sprintf("Locale '%s' found in URL", $matchedLocale));
157	9	return $matchedLocale;
158		}
159		}
160	7	return null;
161		}
162
163	7	private function getLocaleFromRequest(ServerRequestInterface $request): ?string
164		{
165		/** @var array<string, string> $cookies */
166	7	$cookies = $request->getCookieParams();
167	7	if (isset($cookies[$this->sessionName])) {
168	1	$this->logger->debug(sprintf("Locale '%s' found in cookies", $cookies[$this->sessionName]));
169	1	return $this->parseLocale($cookies[$this->sessionName]);
170		}
171		/** @var array<string, string> $queryParameters */
172	6	$queryParameters = $request->getQueryParams();
173	6	if (isset($queryParameters[$this->queryParameterName])) {
174	4	$this->logger->debug(
175	4	sprintf("Locale '%s' found in query string", $queryParameters[$this->queryParameterName])
176	4	);
177	4	return $this->parseLocale($queryParameters[$this->queryParameterName]);
178		}
179	2	return null;
180		}
181
182	15	private function isDefaultLocale(string $locale): bool
183		{
184	15	return $locale === $this->defaultLocale \|\| $this->supportedLocales[$locale] === $this->defaultLocale;
185		}
186
187	2	private function detectLocale(ServerRequestInterface $request): ?string
188		{
189	2	foreach ($request->getHeader(Header::ACCEPT_LANGUAGE) as $language) {
190	1	if (!isset($this->supportedLocales[$language])) {
191	1	$language = $this->parseLocale($language);
192		}
193	1	if (isset($this->supportedLocales[$language])) {
194	1	return $language;
195		}
196		}
197	1	return null;
198		}
199
200	9	private function saveLocale(string $locale, ResponseInterface $response): ResponseInterface
201		{
202	9	$this->logger->debug('Saving found locale to session and cookies.');
203	9	$this->session->set($this->sessionName, $locale);
204	9	$cookie = new Cookie(name: $this->sessionName, value: $locale, secure: $this->secureCookie);
205	9	if ($this->cookieDuration !== null) {
206	9	$cookie = $cookie->withMaxAge($this->cookieDuration);
207		}
208	9	return $cookie->addToResponse($response);
209		}
210
211	7	private function parseLocale(string $locale): string
212		{
213	7	if (str_contains($locale, '-')) {
214	2	[$locale] = explode('-', $locale, 2);
215	5	} elseif (str_contains($locale, '_')) {
216	1	[$locale] = explode('_', $locale, 2);
217		}
218
219	7	return $locale;
220		}
221
222	6	private function isRequestIgnored(ServerRequestInterface $request): bool
223		{
224	6	foreach ($this->ignoredRequestUrlPatterns as $ignoredRequest) {
225	1	if ((new WildcardPattern($ignoredRequest))->match($request->getUri()->getPath())) {
226	1	return true;
227		}
228		}
229	5	return false;
230		}
231
232		/**
233		* @psalm-assert array<string, string> $this->supportedLocales
234		*
235		* @throws InvalidLocalesFormatException
236		*/
237	17	private function assertLocalesFormat(): void
238		{
239	17	foreach ($this->supportedLocales as $code => $locale) {
240	17	if (!is_string($code) \|\| !is_string($locale)) {
241	1	throw new InvalidLocalesFormatException();
242		}
243		}
244		}
245
246	7	private function getBaseUrl(): string
247		{
248	7	return rtrim($this->urlGenerator->getUriPrefix(), '/');
249		}
250
251		/**
252		* Return new instance with supported locales specified.
253		*
254		* @param array $locales List of supported locales in key-value format such as `['ru' => 'ru_RU', 'uz' => 'uz_UZ']`.
255		*/
256	1	public function withSupportedLocales(array $locales): self
257		{
258	1	$new = clone $this;
259	1	$new->supportedLocales = $locales;
260	1	return $new;
261		}
262
263		/**
264		* Return new instance with default locale specified.
265		*
266		* @param string $defaultLocale Default locale.
267		*/
268	3	public function withDefaultLocale(string $defaultLocale): self
269		{
270	3	$new = clone $this;
271	3	$new->defaultLocale = $defaultLocale;
272	3	return $new;
273		}
274
275		/**
276		* Return new instance with the name of the query string parameter to look for locale.
277		*
278		* @param string $queryParameterName Name of the query string parameter.
279		*/
280	1	public function withQueryParameterName(string $queryParameterName): self
281		{
282	1	$new = clone $this;
283	1	$new->queryParameterName = $queryParameterName;
284	1	return $new;
285		}
286
287		/**
288		* Return new instance with the name of session parameter to store found locale.
289		*
290		* @param string $sessionName Name of session parameter.
291		*/
292	1	public function withSessionName(string $sessionName): self
293		{
294	1	$new = clone $this;
295	1	$new->sessionName = $sessionName;
296	1	return $new;
297		}
298
299		/**
300		* Return new instance with enabled or disabled saving of locale.
301		*
302		* @param bool $enabled If middleware should save locale into session and cookies.
303		*/
304	1	public function withSaveLocale(bool $enabled): self
305		{
306	1	$new = clone $this;
307	1	$new->saveLocale = $enabled;
308	1	return $new;
309		}
310
311		/**
312		* Return new instance with enabled or disabled detection of locale based on `Accept-Language` header.
313		*
314		* @param bool $enabled Whether middleware should detect locale.
315		*/
316	3	public function withDetectLocale(bool $enabled): self
317		{
318	3	$new = clone $this;
319	3	$new->detectLocale = $enabled;
320	3	return $new;
321		}
322
323		/**
324		* Return new instance with {@see WildcardPattern patterns} for ignoring requests with URLs matching.
325		*
326		* @param string[] $patterns Patterns.
327		*/
328	2	public function withIgnoredRequestUrlPatterns(array $patterns): self
329		{
330	2	$new = clone $this;
331	2	$new->ignoredRequestUrlPatterns = $patterns;
332	2	return $new;
333		}
334
335		/**
336		* Return new instance with enabled or disabled secure cookies.
337		*
338		* @param bool $secure If middleware should flag locale cookie as "secure."
339		*/
340	1	public function withSecureCookie(bool $secure): self
341		{
342	1	$new = clone $this;
343	1	$new->secureCookie = $secure;
344	1	return $new;
345		}
346		}
347

yiisoft / yii-middleware

Push — master ( b45034...83eef8 )

Locale::withIgnoredRequests() A

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