Locale: Set initial locale using request language

src/Helpers/Translation/TranslationServiceProvider.php

@@ -4,6 +4,7 @@ namespace Engelsystem\Helpers\Translation;
 
 use Engelsystem\Config\Config;
 use Engelsystem\Container\ServiceProvider;
+use Engelsystem\Http\Request;
 use Gettext\Loader\MoLoader;
 use Gettext\Loader\PoLoader;
 use Gettext\Translations;
@@ -21,10 +22,13 @@ class TranslationServiceProvider extends ServiceProvider
         $config = $this->app->get('config');
         /** @var Session $session */
         $session = $this->app->get('session');
+        /** @var Request $request */
+        $request = $this->app->get('request');
 
         $locales = $config->get('locales');
-        $locale = $config->get('default_locale');
+        $defaultLocale = $config->get('default_locale');
         $fallbackLocale = $config->get('fallback_locale', 'en_US');
+        $locale = $request->getPreferredLanguage(array_merge([$defaultLocale], array_keys($locales)));
 
         $sessionLocale = $session->get('locale', $locale);
         if (isset($locales[$sessionLocale])) {

src/Middleware/SetLocale.php

@@ -2,6 +2,7 @@
 
 namespace Engelsystem\Middleware;
 
+use Engelsystem\Helpers\Authenticator;
 use Engelsystem\Helpers\Translation\Translator;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
@@ -11,6 +12,9 @@ use Symfony\Component\HttpFoundation\Session\Session;
 
 class SetLocale implements MiddlewareInterface
 {
+    /** @var Authenticator */
+    protected $auth;
+
     /** @var Translator */
     protected $translator;
 
@@ -20,9 +24,11 @@ class SetLocale implements MiddlewareInterface
     /**
      * @param Translator    $translator
      * @param Session       $session
+     * @param Authenticator $auth
      */
-    public function __construct(Translator $translator, Session $session)
+    public function __construct(Translator $translator, Session $session, Authenticator $auth)
     {
+        $this->auth = $auth;
         $this->translator = $translator;
         $this->session = $session;
     }
@@ -42,6 +48,12 @@ class SetLocale implements MiddlewareInterface
 
             $this->translator->setLocale($locale);
             $this->session->set('locale', $locale);
+
+            $user = $this->auth->user();
+            if ($user) {
+                $user->settings->language = $locale;
+                $user->settings->save();
+            }
         }
 
         return $handler->handle($request);

tests/Unit/Helpers/Translation/TranslationServiceProviderTest.php

@@ -5,6 +5,7 @@ namespace Engelsystem\Test\Unit\Helpers\Translation;
 use Engelsystem\Config\Config;
 use Engelsystem\Helpers\Translation\TranslationServiceProvider;
 use Engelsystem\Helpers\Translation\Translator;
+use Engelsystem\Http\Request;
 use Engelsystem\Test\Unit\ServiceProviderTest;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\MockObject\Rule\InvokedCount;
@@ -17,10 +18,9 @@ class TranslationServiceProviderTest extends ServiceProviderTest
      */
     public function testRegister(): void
     {
-        $defaultLocale = 'fo_OO';
-        $locale = 'te_ST.WTF-9';
-        $locales = ['fo_OO' => 'Foo', 'fo_OO.BAR' => 'Foo (Bar)', 'te_ST.WTF-9' => 'WTF\'s Testing?'];
-        $config = new Config(['locales' => $locales, 'default_locale' => $defaultLocale]);
+        $locale = 'te_ST';
+        $locales = ['fo_OO' => 'Foo', 'fo_OO.BAR' => 'Foo (Bar)', 'te_ST' => 'WTF\'s Testing?'];
+        $config = new Config(['locales' => $locales, 'default_locale' => 'fo_OO']);
 
         $app = $this->getApp(['make', 'singleton', 'alias', 'get']);
         /** @var Session|MockObject $session */
@@ -34,14 +34,16 @@ class TranslationServiceProviderTest extends ServiceProviderTest
             ->onlyMethods(['setLocale'])
             ->getMock();
 
-        $app->expects($this->exactly(2))
+        $request = (new Request())->withAddedHeader('Accept-Language', 'te_ST');
+
+        $app->expects($this->exactly(3))
             ->method('get')
-            ->withConsecutive(['config'], ['session'])
-            ->willReturnOnConsecutiveCalls($config, $session);
+            ->withConsecutive(['config'], ['session'], ['request'])
+            ->willReturnOnConsecutiveCalls($config, $session, $request);
 
         $session->expects($this->once())
             ->method('get')
-            ->with('locale', $defaultLocale)
+            ->with('locale', 'te_ST')
             ->willReturn($locale);
         $session->expects($this->once())
             ->method('set')

tests/Unit/Middleware/SetLocaleTest.php

@@ -2,10 +2,14 @@
 
 namespace Engelsystem\Test\Unit\Middleware;
 
+use Engelsystem\Helpers\Authenticator;
 use Engelsystem\Helpers\Translation\Translator;
 use Engelsystem\Middleware\SetLocale;
+use Engelsystem\Models\User\Settings;
+use Engelsystem\Models\User\User;
+use Engelsystem\Test\Unit\HasDatabase;
+use Engelsystem\Test\Unit\TestCase;
 use PHPUnit\Framework\MockObject\MockObject;
-use PHPUnit\Framework\TestCase;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Server\RequestHandlerInterface;
@@ -13,12 +17,18 @@ use Symfony\Component\HttpFoundation\Session\Session;
 
 class SetLocaleTest extends TestCase
 {
+    use HasDatabase;
+
     /**
      * @covers \Engelsystem\Middleware\SetLocale::__construct
      * @covers \Engelsystem\Middleware\SetLocale::process
      */
     public function testRegister()
     {
+        $this->initDatabase();
+
+        /** @var Authenticator|MockObject $auth */
+        $auth = $this->createMock(Authenticator::class);
         /** @var Translator|MockObject $translator */
         $translator = $this->createMock(Translator::class);
         /** @var Session|MockObject $session */
@@ -30,20 +40,30 @@ class SetLocaleTest extends TestCase
         /** @var ResponseInterface|MockObject $response */
         $response = $this->getMockForAbstractClass(ResponseInterface::class);
 
-        $locale = 'te_ST.UTF8';
+        $user = User::create([
+            'name'     => 'user',
+            'password' => '',
+            'email'    => 'foo@bar.baz',
+            'api_key'  => '',
+        ]);
+        $settings = new Settings(['language' => 'uf_UF', 'theme' => '']);
+        $settings->user()->associate($user);
+        $settings->save();
+
+        $locale = 'te_ST';
 
         $request->expects($this->exactly(3))
             ->method('getQueryParams')
             ->willReturnOnConsecutiveCalls(
                 [],
-                ['set-locale' => 'en_US.UTF8'],
+                ['set-locale' => 'en_US'],
                 ['set-locale' => $locale]
             );
 
         $translator->expects($this->exactly(2))
             ->method('hasLocale')
             ->withConsecutive(
-                ['en_US.UTF8'],
+                ['en_US'],
                 [$locale]
             )
             ->willReturnOnConsecutiveCalls(
@@ -63,9 +83,15 @@ class SetLocaleTest extends TestCase
             ->with($request)
             ->willReturn($response);
 
-        $middleware = new SetLocale($translator, $session);
+        $this->setExpects($auth, 'user', null, $user);
+
+        $middleware = new SetLocale($translator, $session, $auth);
         $middleware->process($request, $handler);
+
         $middleware->process($request, $handler);
+        $this->assertEquals('uf_UF', $user->settings->language);
+
         $middleware->process($request, $handler);
+        $this->assertEquals('te_ST', $user->settings->language);
     }
 }