86 lines
2.3 KiB
PHP
86 lines
2.3 KiB
PHP
<?php
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/**
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* LocaleMiddleware class.
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*/
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namespace Alltube\Middleware;
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use Alltube\Locale;
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use Alltube\LocaleManager;
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use Psr\Container\ContainerInterface;
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use Slim\Http\Request;
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use Slim\Http\Response;
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use Teto\HTTP\AcceptLanguage;
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/**
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* Detect user locale.
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*/
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class LocaleMiddleware
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{
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/**
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* LocaleManager instance.
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*
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* @var LocaleManager
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*/
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private $localeManager;
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/**
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* LocaleMiddleware constructor.
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*
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* @param ContainerInterface $container Slim dependency container
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*/
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public function __construct(ContainerInterface $container)
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{
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$this->localeManager = $container->get('locale');
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}
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/**
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* Test if a locale can be used for the current user.
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*
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* @param mixed[] $proposedLocale Locale array created by AcceptLanguage::parse()
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*
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* @return Locale|null Locale if chosen, nothing otherwise
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*/
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public function testLocale(array $proposedLocale): ?Locale
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{
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foreach ($this->localeManager->getSupportedLocales() as $locale) {
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$parsedLocale = AcceptLanguage::parse($locale);
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if (
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isset($proposedLocale['language'])
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&& $parsedLocale[1]['language'] == $proposedLocale['language']
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&& $parsedLocale[1]['region'] == $proposedLocale['region']
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) {
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return new Locale($proposedLocale['language'] . '_' . $proposedLocale['region']);
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}
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}
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return null;
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}
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/**
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* Main middleware function.
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*
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* @param Request $request PSR request
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* @param Response $response PSR response
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* @param callable $next Next middleware
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*
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* @return Response
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*/
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public function __invoke(Request $request, Response $response, callable $next): Response
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{
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$headers = $request->getHeader('Accept-Language');
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$curLocale = $this->localeManager->getLocale();
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if (is_null($curLocale)) {
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if (isset($headers[0])) {
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$this->localeManager->setLocale(
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AcceptLanguage::detect([$this, 'testLocale'], new Locale('en_US'), $headers[0])
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);
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} else {
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$this->localeManager->setLocale(new Locale('en_US'));
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}
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}
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return $next($request, $response);
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}
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}
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