class LanguageNegotiationContentEntityTest

class LanguageNegotiationContentEntityTest extends BrowserTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'language',
        'language_test',
        'entity_test',
        'system',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * The entity being used for testing.
     *
     * @var \Drupal\Core\Entity\ContentEntityInterface
     */
    protected $entity;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        ConfigurableLanguage::createFromLangcode('es')->save();
        ConfigurableLanguage::createFromLangcode('fr')->save();
        // In order to reflect the changes for a multilingual site in the container
        // we have to rebuild it.
        $this->rebuildContainer();
        $this->createTranslatableEntity();
        $user = $this->drupalCreateUser([
            'view test entity',
        ]);
        $this->drupalLogin($user);
    }
    
    /**
     * Tests default with content language remaining same as interface language.
     */
    public function testDefaultConfiguration() : void {
        $translation = $this->entity;
        $this->drupalGet($translation->toUrl());
        $last = \Drupal::keyValue('language_test')->get('language_negotiation_last');
        $last_content_language = $last[LanguageInterface::TYPE_CONTENT];
        $last_interface_language = $last[LanguageInterface::TYPE_INTERFACE];
        $this->assertSame($last_content_language, $last_interface_language);
        $this->assertSame($translation->language()
            ->getId(), $last_content_language);
        $translation = $this->entity
            ->getTranslation('es');
        $this->drupalGet($translation->toUrl());
        $last = \Drupal::keyValue('language_test')->get('language_negotiation_last');
        $last_content_language = $last[LanguageInterface::TYPE_CONTENT];
        $last_interface_language = $last[LanguageInterface::TYPE_INTERFACE];
        $this->assertSame($last_content_language, $last_interface_language);
        $this->assertSame($translation->language()
            ->getId(), $last_content_language);
        $translation = $this->entity
            ->getTranslation('fr');
        $this->drupalGet($translation->toUrl());
        $last = \Drupal::keyValue('language_test')->get('language_negotiation_last');
        $last_content_language = $last[LanguageInterface::TYPE_CONTENT];
        $last_interface_language = $last[LanguageInterface::TYPE_INTERFACE];
        $this->assertSame($last_content_language, $last_interface_language);
        $this->assertSame($translation->language()
            ->getId(), $last_content_language);
    }
    
    /**
     * Tests enabling the language negotiator language_content_entity.
     */
    public function testEnabledLanguageContentNegotiator() : void {
        // Define the method language-url with a higher priority than
        // language-content-entity. This configuration should match the default one,
        // where the language-content-entity is turned off.
        $config = $this->config('language.types');
        $config->set('configurable', [
            LanguageInterface::TYPE_INTERFACE,
            LanguageInterface::TYPE_CONTENT,
        ]);
        $config->set('negotiation.language_content.enabled', [
            LanguageNegotiationUrl::METHOD_ID => 0,
            LanguageNegotiationContentEntity::METHOD_ID => 1,
        ]);
        $config->save();
        // In order to reflect the changes for a multilingual site in the container
        // we have to rebuild it.
        $this->rebuildContainer();
        // The tests for the default configuration should still pass.
        $this->testDefaultConfiguration();
        // Define the method language-content-entity with a higher priority than
        // language-url.
        $config->set('negotiation.language_content.enabled', [
            LanguageNegotiationContentEntity::METHOD_ID => 0,
            LanguageNegotiationUrl::METHOD_ID => 1,
        ]);
        $config->save();
        // In order to reflect the changes for a multilingual site in the container
        // we have to rebuild it.
        $this->rebuildContainer();
        // The method language-content-entity should run before language-url and
        // append query parameter for the content language and prevent language-url
        // from overwriting the URL.
        $default_site_langcode = $this->config('system.site')
            ->get('default_langcode');
        // Now switching to an entity route, so that the URL links are generated
        // while being on an entity route.
        $this->setCurrentRequestForRoute('/entity_test/{entity_test}', 'entity.entity_test.canonical');
        $translation = $this->entity;
        $this->drupalGet($translation->toUrl());
        $last = \Drupal::keyValue('language_test')->get('language_negotiation_last');
        $last_content_language = $last[LanguageInterface::TYPE_CONTENT];
        $last_interface_language = $last[LanguageInterface::TYPE_INTERFACE];
        // Check that interface language and content language are the same as the
        // default translation language of the entity.
        $this->assertSame($default_site_langcode, $last_interface_language);
        $this->assertSame($last_content_language, $last_interface_language);
        $this->assertSame($translation->language()
            ->getId(), $last_content_language);
        $translation = $this->entity
            ->getTranslation('es');
        $this->drupalGet($translation->toUrl());
        $last = \Drupal::keyValue('language_test')->get('language_negotiation_last');
        $last_content_language = $last[LanguageInterface::TYPE_CONTENT];
        $last_interface_language = $last[LanguageInterface::TYPE_INTERFACE];
        $this->assertSame($last_interface_language, $default_site_langcode, 'Interface language did not change from the default site language.');
        $this->assertSame($last_content_language, $translation->language()
            ->getId(), 'Content language matches the current entity translation language.');
        $translation = $this->entity
            ->getTranslation('fr');
        $this->drupalGet($translation->toUrl());
        $last = \Drupal::keyValue('language_test')->get('language_negotiation_last');
        $last_content_language = $last[LanguageInterface::TYPE_CONTENT];
        $last_interface_language = $last[LanguageInterface::TYPE_INTERFACE];
        $this->assertSame($last_interface_language, $default_site_langcode, 'Interface language did not change from the default site language.');
        $this->assertSame($last_content_language, $translation->language()
            ->getId(), 'Content language matches the current entity translation language.');
    }
    
    /**
     * Creates a translated entity.
     */
    protected function createTranslatableEntity() {
        $this->entity = EntityTest::create();
        $this->entity
            ->addTranslation('es', [
            'name' => 'name spanish',
        ]);
        $this->entity
            ->addTranslation('fr', [
            'name' => 'name french',
        ]);
        $this->entity
            ->save();
    }
    
    /**
     * Sets the current request to a specific path with the corresponding route.
     *
     * @param string $path
     *   The path for which the current request should be created.
     * @param string $route_name
     *   The route name for which the route object for the request should be
     *   created.
     */
    protected function setCurrentRequestForRoute($path, $route_name) {
        $request = Request::create($path);
        $request->attributes
            ->set(RouteObjectInterface::ROUTE_NAME, $route_name);
        $request->attributes
            ->set(RouteObjectInterface::ROUTE_OBJECT, new Route($path));
        $request->setSession(new Session(new MockArraySessionStorage()));
        $this->container
            ->get('request_stack')
            ->push($request);
    }

}