Locale::detectLocale() - Code Metrics - Inspection of "Move `Locale` middleware into package (#10)" - yiisoft/yii-middleware - Measure and Improve Code Quality continuously with Scrutinizer

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by Alexander

created 2022-10-12 21:27 UTC

Locale::detectLocale() A

↳ Parent: Locale

Complexity

Conditions	2
Paths	2

Size

Total Lines	6
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	2

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	2
eloc	3
c	1
b	0
f	0
nc	2
nop	1
dl	0
loc	6
ccs	4
cts	4
cp	1
crap	2
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;

final class Locale implements MiddlewareInterface
{
    private const DEFAULT_LOCALE = 'en';
    private const DEFAULT_LOCALE_NAME = '_language';

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

    public function __construct(
        private TranslatorInterface $translator,
        private UrlGeneratorInterface $urlGenerator,
        private SessionInterface $session,
        private LoggerInterface $logger,
        private ResponseFactoryInterface $responseFactory,
        private array $locales = [],
        private array $ignoredRequests = [],
        private bool $cookieSecure = false
    ) {
        $this->cookieDuration = new DateInterval('P30D');
    }

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

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

        [$locale, $country] = $this->getLocaleFromPath($path);

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

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

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

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


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

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

        if ($newPath !== null) {
            $response = $this->responseFactory
                ->createResponse(Status::FOUND)
                ->withHeader(Header::LOCATION, $newPath);
        }
        if ($this->enableSaveLocale) {
            $response = $this->saveLocale($locale, $response);
        }
        return $response;
    }

    private function getLocaleFromPath(string $path): array
    {
        $parts = [];
        foreach ($this->locales as $code => $locale) {
            $lang = is_string($code) ? $code : $locale;
            $parts[] = $lang;
        }

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

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

    private function isDefaultLocale(string $locale, ?string $country): bool
    {
        return $locale === $this->defaultLocale || ($country !== null && $this->defaultLocale === "$locale-$country");
    }

    private function detectLocale(ServerRequestInterface $request): array
    {
        foreach ($request->getHeader(Header::ACCEPT_LANGUAGE) as $language) {
            return $this->parseLocale($language);
        }
        return [null, null];
    }

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

    private function parseLocale(string $locale): array
    {
        if (str_contains($locale, '-')) {
            return explode('-', $locale, 2);
        }

        if (str_contains($locale, '_')) {
            return explode('_', $locale, 2);
        }
        if (isset($this->locales[$locale]) && str_contains($this->locales[$locale], '-')) {
            return explode('-', $this->locales[$locale], 2);
        }
        return [$locale, null];
    }

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

    public function withLocales(array $locales): self
    {
        $new = clone $this;
        $new->locales = $locales;
        return $new;
    }

    public function withDefaultLocale(string $defaultLocale): self
    {
        $new = clone $this;
        $new->defaultLocale = $defaultLocale;
        return $new;
    }

    public function withQueryParameterName(string $queryParameterName): self
    {
        $new = clone $this;
        $new->queryParameterName = $queryParameterName;
        return $new;
    }

    public function withSessionName(string $sessionName): self
    {
        $new = clone $this;
        $new->sessionName = $sessionName;
        return $new;
    }

    public function withEnableSaveLocale(bool $enableSaveLocale): self
    {
        $new = clone $this;
        $new->enableDetectLocale = $enableSaveLocale;
        return $new;
    }

    public function withEnableDetectLocale(bool $enableDetectLocale): self
    {
        $new = clone $this;
        $new->enableDetectLocale = $enableDetectLocale;
        return $new;
    }

    public function withIgnoredRequests(array $ignoredRequests): self
    {
        $new = clone $this;
        $new->ignoredRequests = $ignoredRequests;
        return $new;
    }

    public function withCookieSecure(bool $secure): self
    {
        $new = clone $this;
        $new->cookieSecure = $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
23		final class Locale implements MiddlewareInterface
24		{
25		private const DEFAULT_LOCALE = 'en';
26		private const DEFAULT_LOCALE_NAME = '_language';
27
28		private bool $enableSaveLocale = true;
29		private bool $enableDetectLocale = false;
30		private string $defaultLocale = self::DEFAULT_LOCALE;
31		private string $queryParameterName = self::DEFAULT_LOCALE_NAME;
32		private string $sessionName = self::DEFAULT_LOCALE_NAME;
33		private ?DateInterval $cookieDuration;
34
35	12	public function __construct(
36		private TranslatorInterface $translator,
37		private UrlGeneratorInterface $urlGenerator,
38		private SessionInterface $session,
39		private LoggerInterface $logger,
40		private ResponseFactoryInterface $responseFactory,
41		private array $locales = [],
42		private array $ignoredRequests = [],
43		private bool $cookieSecure = false
44		) {
45	12	$this->cookieDuration = new DateInterval('P30D');
46		}
47
48	11	public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
49		{
50	11	if ($this->locales === []) {
51	1	return $handler->handle($request);
52		}
53
54	10	$uri = $request->getUri();
55	10	$path = $uri->getPath();
56
57	10	[$locale, $country] = $this->getLocaleFromPath($path);
58
59	10	if ($locale !== null) {
60	5	$this->translator->setLocale($locale);
61	5	$this->urlGenerator->setDefaultArgument($this->queryParameterName, $locale);
62
63	5	$response = $handler->handle($request);
64	5	$newPath = null;
65	5	if ($this->isDefaultLocale($locale, $country) && $request->getMethod() === Method::GET) {
66	3	$length = strlen($locale);
67	3	$newPath = substr($path, $length + 1);
68		}
69	5	return $this->applyLocaleFromPath($locale, $response, $newPath);
70		}
71	5	if ($this->enableSaveLocale) {
72	5	[$locale, $country] = $this->getLocaleFromRequest($request);
73		}
74	5	if ($locale === null && $this->enableDetectLocale) {
75	2	[$locale, $country] = $this->detectLocale($request);
76		}
77	5	if ($locale === null \|\| $this->isDefaultLocale($locale, $country) \|\| $this->isRequestIgnored($request)) {
78	2	$this->urlGenerator->setDefaultArgument($this->queryParameterName, null);
79	2	$request = $request->withUri($uri->withPath('/' . $this->defaultLocale . $path));
80	2	return $handler->handle($request);
81		}
82
83	3	$this->translator->setLocale($locale);
84	3	$this->urlGenerator->setDefaultArgument($this->queryParameterName, $locale);
85
86	3	if ($request->getMethod() === Method::GET) {
87	2	return $this->responseFactory
88	2	->createResponse(Status::FOUND)
89	2	->withHeader(Header::LOCATION, '/' . $locale . $path);
90		}
91
92
93	1	return $handler->handle($request);
94		}
95
96	5	private function applyLocaleFromPath(
97		string $locale,
98		ResponseInterface $response,
99		?string $newPath = null
100		): ResponseInterface {
101	5	if ($newPath === '') {
102	2	$newPath = '/';
103		}
104
105	5	if ($newPath !== null) {
106	3	$response = $this->responseFactory
107	3	->createResponse(Status::FOUND)
108	3	->withHeader(Header::LOCATION, $newPath);
109		}
110	5	if ($this->enableSaveLocale) {
111	5	$response = $this->saveLocale($locale, $response);
112		}
113	5	return $response;
114		}
115
116	10	private function getLocaleFromPath(string $path): array
117		{
118	10	$parts = [];
119	10	foreach ($this->locales as $code => $locale) {
120	10	$lang = is_string($code) ? $code : $locale;
121	10	$parts[] = $lang;
122		}
123
124	10	$pattern = implode('\|', $parts);
125	10	if (preg_match("#^/($pattern)\b(/?)#i", $path, $matches)) {
126	5	$locale = $matches[1];
127	5	[$locale, $country] = $this->parseLocale($locale);
128	5	if (isset($this->locales[$locale])) {
129	5	$this->logger->debug(sprintf("Locale '%s' found in URL", $locale));
130	5	return [$locale, $country];
131		}
132		}
133	5	return [null, null];
134		}
135
136	5	private function getLocaleFromRequest(ServerRequestInterface $request): array
137		{
138	5	$cookies = $request->getCookieParams();
139	5	$queryParameters = $request->getQueryParams();
140	5	if (isset($cookies[$this->sessionName])) {
141		$this->logger->debug(sprintf("Locale '%s' found in cookies", $cookies[$this->sessionName]));
142		return $this->parseLocale($cookies[$this->sessionName]);
143		}
144	5	if (isset($queryParameters[$this->queryParameterName])) {
145	3	$this->logger->debug(
146	3	sprintf("Locale '%s' found in query string", $queryParameters[$this->queryParameterName])
147		);
148	3	return $this->parseLocale($queryParameters[$this->queryParameterName]);
149		}
150	2	return [null, null];
151		}
152
153	9	private function isDefaultLocale(string $locale, ?string $country): bool
154		{
155	9	return $locale === $this->defaultLocale \|\| ($country !== null && $this->defaultLocale === "$locale-$country");
156		}
157
158	2	private function detectLocale(ServerRequestInterface $request): array
159		{
160	2	foreach ($request->getHeader(Header::ACCEPT_LANGUAGE) as $language) {
161	1	return $this->parseLocale($language);
162		}
163	1	return [null, null];
164		}
165
166	5	private function saveLocale(string $locale, ResponseInterface $response): ResponseInterface
167		{
168	5	$this->logger->debug('Saving found locale to cookies');
169	5	$this->session->set($this->sessionName, $locale);
170	5	$cookie = new Cookie(name: $this->sessionName, value: $locale, secure: $this->cookieSecure);
171	5	if ($this->cookieDuration !== null) {
172	5	$cookie = $cookie->withMaxAge($this->cookieDuration);
173		}
174	5	return $cookie->addToResponse($response);
175		}
176
177	9	private function parseLocale(string $locale): array
178		{
179	9	if (str_contains($locale, '-')) {
180		return explode('-', $locale, 2);
181		}
182
183	9	if (str_contains($locale, '_')) {
184		return explode('_', $locale, 2);
185		}
186	9	if (isset($this->locales[$locale]) && str_contains($this->locales[$locale], '-')) {
187	9	return explode('-', $this->locales[$locale], 2);
188		}
189		return [$locale, null];
190		}
191
192	4	private function isRequestIgnored(ServerRequestInterface $request): bool
193		{
194	4	foreach ($this->ignoredRequests as $ignoredRequest) {
195	1	if ((new WildcardPattern($ignoredRequest))->match($request->getUri()->getPath())) {
196	1	return true;
197		}
198		}
199	3	return false;
200		}
201
202	1	public function withLocales(array $locales): self
203		{
204	1	$new = clone $this;
205	1	$new->locales = $locales;
206	1	return $new;
207		}
208
209	3	public function withDefaultLocale(string $defaultLocale): self
210		{
211	3	$new = clone $this;
212	3	$new->defaultLocale = $defaultLocale;
213	3	return $new;
214		}
215
216	1	public function withQueryParameterName(string $queryParameterName): self
217		{
218	1	$new = clone $this;
219	1	$new->queryParameterName = $queryParameterName;
220	1	return $new;
221		}
222
223	1	public function withSessionName(string $sessionName): self
224		{
225	1	$new = clone $this;
226	1	$new->sessionName = $sessionName;
227	1	return $new;
228		}
229
230	1	public function withEnableSaveLocale(bool $enableSaveLocale): self
231		{
232	1	$new = clone $this;
233	1	$new->enableDetectLocale = $enableSaveLocale;
234	1	return $new;
235		}
236
237	3	public function withEnableDetectLocale(bool $enableDetectLocale): self
238		{
239	3	$new = clone $this;
240	3	$new->enableDetectLocale = $enableDetectLocale;
241	3	return $new;
242		}
243
244	2	public function withIgnoredRequests(array $ignoredRequests): self
245		{
246	2	$new = clone $this;
247	2	$new->ignoredRequests = $ignoredRequests;
248	2	return $new;
249		}
250
251	1	public function withCookieSecure(bool $secure): self
252		{
253	1	$new = clone $this;
254	1	$new->cookieSecure = $secure;
255	1	return $new;
256		}
257		}
258

yiisoft / yii-middleware

Push — master ( 75f605...f16558 )

Locale::detectLocale() A

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