LanguageMiddleware::__invoke() - Code Metrics - locomotivemtl/charcoal-translator - Measure and Improve Code Quality continuously with Scrutinizer

LanguageMiddleware::__invoke() A
last analyzed 2018-05-28 01:19 UTC

↳ Parent: LanguageMiddleware

Complexity

Conditions	3
Paths	3

Size

Total Lines	15
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	3
eloc	8
nc	3
nop	3
dl	0
loc	15
rs	9.4285
c	0
b	0
f	0

<?php

namespace Charcoal\Translator\Middleware;

// From PSR-7
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;

// From Pimple
use Pimple\Container;

// From 'charcoal-translator'
use Charcoal\Translator\LocalesManager;
use Charcoal\Translator\TranslatorAwareTrait;

/**
 * Class LanguageMiddleware
 */
class LanguageMiddleware
{
    use TranslatorAwareTrait;

    /**
     * @var string
     */
    private $defaultLanguage;

    /**
     * @var string
     */
    private $browserLanguage;

    /**
     * @var array
     */
    private $excludedPath;

    /**
     * @var boolean
     */
    private $usePath;

    /**
     * @var string
     */
    private $pathRegexp;

    /**
     * @var boolean
     */
    private $useBrowser;

    /**
     * @var boolean
     */
    private $useSession;

    /**
     * @var string[]
     */
    private $sessionKey;

    /**
     * @var boolean
     */
    private $useParams;

    /**
     * @var string[]
     */
    private $paramKey;

    /**
     * @var boolean
     */
    private $useHost;

    /**
     * @var array
     */
    private $hostMap;

    /**
     * @var boolean
     */
    private $setLocale;

    /**
     * @param array $data The middleware options.
     */
    public function __construct(array $data)
    {
        $this->setTranslator($data['translator']);

        $data = array_replace($this->defaults(), $data);

        $this->defaultLanguage = $data['default_language'];
        $this->browserLanguage = $data['browser_language'];

        $this->usePath      = !!$data['use_path'];
        $this->excludedPath = (array)$data['excluded_path'];
        $this->pathRegexp   = $data['path_regexp'];

        $this->useParams    = !!$data['use_params'];
        $this->paramKey     = (array)$data['param_key'];

        $this->useSession   = !!$data['use_session'];
        $this->sessionKey   = (array)$data['session_key'];

        $this->useBrowser   = !!$data['use_browser'];

        $this->useHost      = !!$data['use_host'];
        $this->hostMap      = (array)$data['host_map'];

        $this->setLocale    = !!$data['set_locale'];
    }

    /**
     * Default middleware options.
     *
     * @return array
     */
    public function defaults()
    {
        return [
            'default_language' => null,
            'browser_language' => null,

            'use_path'         => true,
            'excluded_path'    => [ '^/admin\b' ],
            'path_regexp'      => '^/([a-z]{2})\b',

            'use_params'       => false,
            'param_key'        => 'current_language',

            'use_session'      => true,
            'session_key'      => 'current_language',

            'use_browser'      => true,

            'use_host'         => false,
            'host_map'         => [],

            'set_locale'       => true
        ];
    }

    /**
     * @param  RequestInterface  $request  The PSR-7 HTTP request.
     * @param  ResponseInterface $response The PSR-7 HTTP response.
     * @param  callable          $next     The next middleware callable in the stack.
     * @return ResponseInterface
     */
    public function __invoke(RequestInterface $request, ResponseInterface $response, callable $next)
    {
        // Test if path is excluded from middleware.
        $uri  = $request->getUri();
        $path = $uri->getPath();
        foreach ($this->excludedPath as $excluded) {
            if (preg_match('@'.$excluded.'@', $path)) {
                return $next($request, $response);
            }
        }

        $language = $this->getLanguage($request);
        $this->setLanguage($language);

        return $next($request, $response);
    }

    /**
     * @param  RequestInterface $request The PSR-7 HTTP request.
     * @return null|string
     */
    private function getLanguage(RequestInterface $request)
    {
        if ($this->useHost === true) {
            $lang = $this->getLanguageFromHost($request);
            if ($lang) {
                return $lang;
            }
        }

        if ($this->usePath === true) {
            $lang = $this->getLanguageFromPath($request);
            if ($lang) {
                return $lang;
            }
        }

        if ($this->useParams === true) {
            $lang = $this->getLanguageFromParams($request);
            if ($lang) {
                return $lang;
            }
        }

        if ($this->useSession === true) {
            $lang = $this->getLanguageFromSession();
            if ($lang) {
                return $lang;
            }
        }

        if ($this->useBrowser === true) {
            $lang = $this->getLanguageFromBrowser();
            if ($lang) {
                return $lang;
            }
        }

        return $this->defaultLanguage;
    }

    /**
     * @param  RequestInterface $request The PSR-7 HTTP request.
     * @return string
     */
    private function getLanguageFromHost(RequestInterface $request)
    {
        $uriHost = $request->getUri()->getHost();
        foreach ($this->hostMap as $lang => $host) {
            if (stripos($uriHost, $host) !== false) {
                return $lang;
            }
        }

        return '';
    }

    /**
     * @param  RequestInterface $request The PSR-7 HTTP request.
     * @return string
     */
    private function getLanguageFromPath(RequestInterface $request)
    {
        $path = $request->getRequestTarget();
        if (preg_match('@'.$this->pathRegexp.'@', $path, $matches)) {
            $lang = $matches[1];
        } else {
            return '';
        }

        if (in_array($lang, $this->translator()->availableLocales())) {
            return $lang;
        } else {
            return '';
        }
    }

    /**
     * @param  RequestInterface $request The PSR-7 HTTP request.
     * @return string
     */
    private function getLanguageFromParams(RequestInterface $request)
    {
        if ($request instanceof ServerRequestInterface) {
            $locales = $this->translator()->availableLocales();
            $params  = $request->getQueryParams();
            foreach ($this->paramKey as $key) {
                if (isset($params[$key]) && in_array($params[$key], $locales)) {
                    return $params[$key];
                }
            }
        }

        return '';
    }

    /**
     * @return string
     */
    private function getLanguageFromSession()
    {
        $locales = $this->translator()->availableLocales();
        foreach ($this->sessionKey as $key) {
            if (isset($_SESSION[$key]) && in_array($_SESSION[$key], $locales)) {
                return $_SESSION[$key];
            }
        }

        return '';
    }

    /**
     * @return mixed
     */
    private function getLanguageFromBrowser()
    {
        return $this->browserLanguage;
    }

    /**
     * @param  string $lang The language code to set.
     * @return void
     */
    private function setLanguage($lang)
    {
        $this->translator()->setLocale($lang);

        if ($this->useSession === true) {
            foreach ($this->sessionKey as $key) {
                $_SESSION[$key] = $this->translator()->getLocale();
            }
        }

        if ($this->setLocale === true) {
            $this->setLocale($lang);
        }
    }

    /**
     * @param  string $lang The language code to set.
     * @return void
     */
    private function setLocale($lang)
    {
        $translator = $this->translator();
        $available  = $translator->locales();
        $fallbacks  = $translator->getFallbackLocales();

        array_unshift($fallbacks, $lang);
        $fallbacks = array_unique($fallbacks);

        $locales = [];
        foreach ($fallbacks as $code) {
            if (isset($available[$code])) {
                $locale = $available[$code];
                if (isset($locale['locales'])) {
                    $choices = (array)$locale['locales'];
                    array_push($locales, ...$choices);
                } elseif (isset($locale['locale'])) {
                    array_push($locales, $locale['locale']);
                }
            }
        }

        $locales = array_unique($locales);

        if ($locales) {

            setlocale(LC_ALL, $locales);
        }
    }
}


1			<?php
2
3			namespace Charcoal\Translator\Middleware;
4
5			// From PSR-7
6			use Psr\Http\Message\ServerRequestInterface;
7			use Psr\Http\Message\RequestInterface;
8			use Psr\Http\Message\ResponseInterface;
9
10			// From Pimple
11			use Pimple\Container;
12
13			// From 'charcoal-translator'
14			use Charcoal\Translator\LocalesManager;
15			use Charcoal\Translator\TranslatorAwareTrait;
16
17			/**
18			* Class LanguageMiddleware
19			*/
20			class LanguageMiddleware
21			{
22			use TranslatorAwareTrait;
23
24			/**
25			* @var string
26			*/
27			private $defaultLanguage;
28
29			/**
30			* @var string
31			*/
32			private $browserLanguage;
33
34			/**
35			* @var array
36			*/
37			private $excludedPath;
38
39			/**
40			* @var boolean
41			*/
42			private $usePath;
43
44			/**
45			* @var string
46			*/
47			private $pathRegexp;
48
49			/**
50			* @var boolean
51			*/
52			private $useBrowser;
53
54			/**
55			* @var boolean
56			*/
57			private $useSession;
58
59			/**
60			* @var string[]
61			*/
62			private $sessionKey;
63
64			/**
65			* @var boolean
66			*/
67			private $useParams;
68
69			/**
70			* @var string[]
71			*/
72			private $paramKey;
73
74			/**
75			* @var boolean
76			*/
77			private $useHost;
78
79			/**
80			* @var array
81			*/
82			private $hostMap;
83
84			/**
85			* @var boolean
86			*/
87			private $setLocale;
88
89			/**
90			* @param array $data The middleware options.
91			*/
92			public function __construct(array $data)
93			{
94			$this->setTranslator($data['translator']);
95
96			$data = array_replace($this->defaults(), $data);
97
98			$this->defaultLanguage = $data['default_language'];
99			$this->browserLanguage = $data['browser_language'];
100
101			$this->usePath = !!$data['use_path'];
102			$this->excludedPath = (array)$data['excluded_path'];
103			$this->pathRegexp = $data['path_regexp'];
104
105			$this->useParams = !!$data['use_params'];
106			$this->paramKey = (array)$data['param_key'];
107
108			$this->useSession = !!$data['use_session'];
109			$this->sessionKey = (array)$data['session_key'];
110
111			$this->useBrowser = !!$data['use_browser'];
112
113			$this->useHost = !!$data['use_host'];
114			$this->hostMap = (array)$data['host_map'];
115
116			$this->setLocale = !!$data['set_locale'];
117			}
118
119			/**
120			* Default middleware options.
121			*
122			* @return array
123			*/
124			public function defaults()
125			{
126			return [
127			'default_language' => null,
128			'browser_language' => null,
129
130			'use_path' => true,
131			'excluded_path' => [ '^/admin\b' ],
132			'path_regexp' => '^/([a-z]{2})\b',
133
134			'use_params' => false,
135			'param_key' => 'current_language',
136
137			'use_session' => true,
138			'session_key' => 'current_language',
139
140			'use_browser' => true,
141
142			'use_host' => false,
143			'host_map' => [],
144
145			'set_locale' => true
146			];
147			}
148
149			/**
150			* @param RequestInterface $request The PSR-7 HTTP request.
151			* @param ResponseInterface $response The PSR-7 HTTP response.
152			* @param callable $next The next middleware callable in the stack.
153			* @return ResponseInterface
154			*/
155			public function __invoke(RequestInterface $request, ResponseInterface $response, callable $next)
156			{
157			// Test if path is excluded from middleware.
158			$uri = $request->getUri();
159			$path = $uri->getPath();
160			foreach ($this->excludedPath as $excluded) {
161			if (preg_match('@'.$excluded.'@', $path)) {
162			return $next($request, $response);
163			}
164			}
165
166			$language = $this->getLanguage($request);
167			$this->setLanguage($language);
168
169			return $next($request, $response);
170			}
171
172			/**
173			* @param RequestInterface $request The PSR-7 HTTP request.
174			* @return null\|string
175			*/
176			private function getLanguage(RequestInterface $request)
177			{
178			if ($this->useHost === true) {
179			$lang = $this->getLanguageFromHost($request);
180			if ($lang) {
181			return $lang;
182			}
183			}
184
185			if ($this->usePath === true) {
186			$lang = $this->getLanguageFromPath($request);
187			if ($lang) {
188			return $lang;
189			}
190			}
191
192			if ($this->useParams === true) {
193			$lang = $this->getLanguageFromParams($request);
194			if ($lang) {
195			return $lang;
196			}
197			}
198
199			if ($this->useSession === true) {
200			$lang = $this->getLanguageFromSession();
201			if ($lang) {
202			return $lang;
203			}
204			}
205
206			if ($this->useBrowser === true) {
207			$lang = $this->getLanguageFromBrowser();
208			if ($lang) {
209			return $lang;
210			}
211			}
212
213			return $this->defaultLanguage;
214			}
215
216			/**
217			* @param RequestInterface $request The PSR-7 HTTP request.
218			* @return string
219			*/
220			private function getLanguageFromHost(RequestInterface $request)
221			{
222			$uriHost = $request->getUri()->getHost();
223			foreach ($this->hostMap as $lang => $host) {
224			if (stripos($uriHost, $host) !== false) {
225			return $lang;
226			}
227			}
228
229			return '';
230			}
231
232			/**
233			* @param RequestInterface $request The PSR-7 HTTP request.
234			* @return string
235			*/
236			private function getLanguageFromPath(RequestInterface $request)
237			{
238			$path = $request->getRequestTarget();
239			if (preg_match('@'.$this->pathRegexp.'@', $path, $matches)) {
240			$lang = $matches[1];
241			} else {
242			return '';
243			}
244
245			if (in_array($lang, $this->translator()->availableLocales())) {
246			return $lang;
247			} else {
248			return '';
249			}
250			}
251
252			/**
253			* @param RequestInterface $request The PSR-7 HTTP request.
254			* @return string
255			*/
256			private function getLanguageFromParams(RequestInterface $request)
257			{
258			if ($request instanceof ServerRequestInterface) {
259			$locales = $this->translator()->availableLocales();
260			$params = $request->getQueryParams();
261			foreach ($this->paramKey as $key) {
262			if (isset($params[$key]) && in_array($params[$key], $locales)) {
263			return $params[$key];
264			}
265			}
266			}
267
268			return '';
269			}
270
271			/**
272			* @return string
273			*/
274			private function getLanguageFromSession()
275			{
276			$locales = $this->translator()->availableLocales();
277			foreach ($this->sessionKey as $key) {
278			if (isset($_SESSION[$key]) && in_array($_SESSION[$key], $locales)) {
279			return $_SESSION[$key];
280			}
281			}
282
283			return '';
284			}
285
286			/**
287			* @return mixed
288			*/
289			private function getLanguageFromBrowser()
290			{
291			return $this->browserLanguage;
292			}
293
294			/**
295			* @param string $lang The language code to set.
296			* @return void
297			*/
298			private function setLanguage($lang)
299			{
300			$this->translator()->setLocale($lang);
301
302			if ($this->useSession === true) {
303			foreach ($this->sessionKey as $key) {
304			$_SESSION[$key] = $this->translator()->getLocale();
305			}
306			}
307
308			if ($this->setLocale === true) {
309			$this->setLocale($lang);
310			}
311			}
312
313			/**
314			* @param string $lang The language code to set.
315			* @return void
316			*/
317			private function setLocale($lang)
318			{
319			$translator = $this->translator();
320			$available = $translator->locales();
321			$fallbacks = $translator->getFallbackLocales();
322
323			array_unshift($fallbacks, $lang);
324			$fallbacks = array_unique($fallbacks);
325
326			$locales = [];
327			foreach ($fallbacks as $code) {
328			if (isset($available[$code])) {
329			$locale = $available[$code];
330			if (isset($locale['locales'])) {
331			$choices = (array)$locale['locales'];
332			array_push($locales, ...$choices);
333			} elseif (isset($locale['locale'])) {
334			array_push($locales, $locale['locale']);
335			}
336			}
337			}
338
339			$locales = array_unique($locales);
340
341			if ($locales) {
			0 ignored issues – show Bug Best Practice introduced 2018-02-07 15:22 UTC by Report Bug Copy Issue Report The expression `$locales` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
342			setlocale(LC_ALL, $locales);
343			}
344			}
345			}
346

locomotivemtl / charcoal-translator

LanguageMiddleware::__invoke() A last analyzed 2018-05-28 01:19 UTC

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LanguageMiddleware::__invoke() A
last analyzed 2018-05-28 01:19 UTC