<?php

declare(strict_types=1);

namespace Drupal\Tests\language\Functional;

use Drupal\Core\Language\LanguageInterface;
use Drupal\entity_test\Entity\EntityTest;
use Drupal\entity_test\EntityTestHelper;
use Drupal\language\Entity\ConfigurableLanguage;
use Drupal\language\Entity\ContentLanguageSettings;
use Drupal\taxonomy\Entity\Vocabulary;
use Drupal\Tests\BrowserTestBase;
use PHPUnit\Framework\Attributes\Group;
use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;

/**
 * Tests the features of the language configuration element field.
 */
#[Group('language')]
#[RunTestsInSeparateProcesses]
class LanguageConfigurationElementTest extends BrowserTestBase {

  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'taxonomy',
    'node',
    'language',
    'language_elements_test',
    'field_ui',
  ];

  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';

  /**
   * {@inheritdoc}
   */
  protected function setUp(): void {
    parent::setUp();
    $user = $this->drupalCreateUser([
      'access administration pages',
      'administer languages',
      'administer content types',
    ]);
    $this->drupalLogin($user);
  }

  /**
   * Tests the language settings have been saved.
   */
  public function testLanguageConfigurationElement(): void {
    $this->drupalGet('language-tests/language_configuration_element');
    $edit['lang_configuration[langcode]'] = 'current_interface';
    $edit['lang_configuration[language_alterable]'] = FALSE;
    $this->submitForm($edit, 'Save');
    $lang_conf = ContentLanguageSettings::loadByEntityTypeBundle('entity_test', 'some_bundle');

    // Check that the settings have been saved.
    $this->assertEquals('current_interface', $lang_conf->getDefaultLangcode());
    $this->assertFalse($lang_conf->isLanguageAlterable());
    $this->drupalGet('language-tests/language_configuration_element');
    $this->assertTrue($this->assertSession()->optionExists('edit-lang-configuration-langcode', 'current_interface')->isSelected());
    $this->assertSession()->checkboxNotChecked('edit-lang-configuration-language-alterable');

    // Reload the page and save again.
    $this->drupalGet('language-tests/language_configuration_element');
    $edit['lang_configuration[langcode]'] = 'authors_default';
    $edit['lang_configuration[language_alterable]'] = TRUE;
    $this->submitForm($edit, 'Save');
    $lang_conf = ContentLanguageSettings::loadByEntityTypeBundle('entity_test', 'some_bundle');

    // Check that the settings have been saved.
    $this->assertEquals('authors_default', $lang_conf->getDefaultLangcode());
    $this->assertTrue($lang_conf->isLanguageAlterable());
    $this->drupalGet('language-tests/language_configuration_element');
    $this->assertTrue($this->assertSession()->optionExists('edit-lang-configuration-langcode', 'authors_default')->isSelected());
    $this->assertSession()->checkboxChecked('edit-lang-configuration-language-alterable');

    // Test if content type settings have been saved.
    $edit = [
      'name' => 'Page',
      'type' => 'page',
      'language_configuration[langcode]' => 'authors_default',
      'language_configuration[language_alterable]' => TRUE,
    ];
    $this->drupalGet('admin/structure/types/add');
    $this->submitForm($edit, 'Save and manage fields');

    // Make sure the settings are saved when creating the content type.
    $this->drupalGet('admin/structure/types/manage/page');
    $this->assertTrue($this->assertSession()->optionExists('edit-language-configuration-langcode', 'authors_default')->isSelected());
    $this->assertSession()->checkboxChecked('edit-language-configuration-language-alterable');

  }

  /**
   * Tests that default langcode is correctly returned.
   */
  public function testDefaultLangcode(): void {
    // Add some custom languages.
    foreach (['aa', 'bb', 'cc'] as $language_code) {
      ConfigurableLanguage::create([
        'id' => $language_code,
        'label' => $this->randomMachineName(),
      ])->save();
    }

    // Ensure the bundle under test exist, to avoid config validation errors.
    EntityTestHelper::createBundle('custom_bundle');

    // Fixed language.
    ContentLanguageSettings::loadByEntityTypeBundle('entity_test', 'custom_bundle')
      ->setLanguageAlterable(TRUE)
      ->setDefaultLangcode('bb')
      ->save();
    $this->assertSame('bb', $this->getDefaultLangcode());

    // Current interface.
    ContentLanguageSettings::loadByEntityTypeBundle('entity_test', 'custom_bundle')
      ->setDefaultLangcode('current_interface')
      ->save();
    $language_interface = \Drupal::languageManager()->getCurrentLanguage();
    $this->assertSame($language_interface->getId(), $this->getDefaultLangcode());

    // Site's default.
    $old_default = \Drupal::languageManager()->getDefaultLanguage();
    // Ensure the language entity default value is correct.
    $configurable_language = ConfigurableLanguage::load($old_default->getId());
    $this->assertTrue($configurable_language->isDefault(), 'The en language entity is flagged as the default language.');

    $this->config('system.site')->set('default_langcode', 'cc')->save();
    ContentLanguageSettings::loadByEntityTypeBundle('entity_test', 'custom_bundle')
      ->setDefaultLangcode(LanguageInterface::LANGCODE_SITE_DEFAULT)
      ->save();
    $this->assertSame('cc', $this->getDefaultLangcode());

    // Ensure the language entity default value is correct.
    $configurable_language = ConfigurableLanguage::load($old_default->getId());
    $this->assertFalse($configurable_language->isDefault(), 'The en language entity is not flagged as the default language.');
    $configurable_language = ConfigurableLanguage::load('cc');
    // Check calling the
    // \Drupal\language\ConfigurableLanguageInterface::isDefault() method
    // directly.
    $this->assertTrue($configurable_language->isDefault(), 'The cc language entity is flagged as the default language.');

    // Check the default value of a language field when the author's preferred
    // option is selected. First, create a user with a preferred language.
    $some_user = $this->createUser(values: ['preferred_langcode' => 'bb']);
    $this->drupalLogin($some_user);
    ContentLanguageSettings::loadByEntityTypeBundle('entity_test', 'custom_bundle')
      ->setDefaultLangcode('authors_default')
      ->save();
    $this->assertSame('bb', $this->getDefaultLangcode());
  }

  /**
   * Tests that the configuration is retained when the node type is updated.
   */
  public function testNodeTypeUpdate(): void {
    // Create the article content type first if the profile used is not the
    // standard one.
    if ($this->profile != 'standard') {
      $this->drupalCreateContentType(['type' => 'article', 'name' => 'Article']);
    }
    $admin_user = $this->drupalCreateUser(['administer content types']);
    $this->drupalLogin($admin_user);
    $edit = [
      'language_configuration[langcode]' => 'current_interface',
      'language_configuration[language_alterable]' => TRUE,
    ];
    $this->drupalGet('admin/structure/types/manage/article');
    $this->submitForm($edit, 'Save');
    // Check the language default configuration for the articles.
    $configuration = ContentLanguageSettings::loadByEntityTypeBundle('node', 'article');
    $uuid = $configuration->uuid();
    $this->assertEquals('current_interface', $configuration->getDefaultLangcode(), 'The default language configuration has been saved on the Article content type.');
    $this->assertTrue($configuration->isLanguageAlterable(), 'The alterable language configuration has been saved on the Article content type.');
    // Update the article content type by changing the title label.
    $edit = [
      'title_label' => 'Name',
    ];
    $this->drupalGet('admin/structure/types/manage/article');
    $this->submitForm($edit, 'Save');
    // Check that we still have the settings for the updated node type.
    $configuration = ContentLanguageSettings::loadByEntityTypeBundle('node', 'article');
    $this->assertEquals('current_interface', $configuration->getDefaultLangcode(), 'The default language configuration has been kept on the updated Article content type.');
    $this->assertTrue($configuration->isLanguageAlterable(), 'The alterable language configuration has been kept on the updated Article content type.');
    $this->assertEquals($uuid, $configuration->uuid(), 'The language configuration uuid has been kept on the updated Article content type.');
  }

  /**
   * Tests the language settings are deleted on bundle delete.
   */
  public function testNodeTypeDelete(): void {
    // Create the article content type first if the profile used is not the
    // standard one.
    if ($this->profile != 'standard') {
      $this->drupalCreateContentType([
        'type' => 'article',
        'name' => 'Article',
      ]);
    }
    $admin_user = $this->drupalCreateUser(['administer content types']);
    $this->drupalLogin($admin_user);

    // Create language configuration for the articles.
    $edit = [
      'language_configuration[langcode]' => 'authors_default',
      'language_configuration[language_alterable]' => TRUE,
    ];
    $this->drupalGet('admin/structure/types/manage/article');
    $this->submitForm($edit, 'Save');

    // Check the language default configuration for articles is present.
    $configuration = \Drupal::entityTypeManager()->getStorage('language_content_settings')->load('node.article');
    $this->assertNotEmpty($configuration, 'The language configuration is present.');

    // Delete 'article' bundle.
    $this->drupalGet('admin/structure/types/manage/article/delete');
    $this->submitForm([], 'Delete');

    // Check that the language configuration has been deleted.
    \Drupal::entityTypeManager()->getStorage('language_content_settings')->resetCache();
    $configuration = \Drupal::entityTypeManager()->getStorage('language_content_settings')->load('node.article');
    $this->assertNull($configuration, 'The language configuration was deleted after bundle was deleted.');
  }

  /**
   * Tests that the configuration is retained when a vocabulary is updated.
   */
  public function testTaxonomyVocabularyUpdate(): void {
    $vocabulary = Vocabulary::create([
      'name' => 'Country',
      'vid' => 'country',
    ]);
    $vocabulary->save();

    $admin_user = $this->drupalCreateUser(['administer taxonomy']);
    $this->drupalLogin($admin_user);
    $edit = [
      'default_language[langcode]' => 'current_interface',
      'default_language[language_alterable]' => TRUE,
    ];
    $this->drupalGet('admin/structure/taxonomy/manage/country');
    $this->submitForm($edit, 'Save');

    // Check the language default configuration.
    $configuration = ContentLanguageSettings::loadByEntityTypeBundle('taxonomy_term', 'country');
    $uuid = $configuration->uuid();
    $this->assertEquals('current_interface', $configuration->getDefaultLangcode(), 'The default language configuration has been saved on the Country vocabulary.');
    $this->assertTrue($configuration->isLanguageAlterable(), 'The alterable language configuration has been saved on the Country vocabulary.');
    // Update the vocabulary.
    $edit = [
      'name' => 'Nation',
    ];
    $this->drupalGet('admin/structure/taxonomy/manage/country');
    $this->submitForm($edit, 'Save');
    // Check that we still have the settings for the updated vocabulary.
    $configuration = ContentLanguageSettings::loadByEntityTypeBundle('taxonomy_term', 'country');
    $this->assertEquals('current_interface', $configuration->getDefaultLangcode(), 'The default language configuration has been kept on the updated Country vocabulary.');
    $this->assertTrue($configuration->isLanguageAlterable(), 'The alterable language configuration has been kept on the updated Country vocabulary.');
    $this->assertEquals($uuid, $configuration->uuid(), 'The language configuration uuid has been kept on the updated Country vocabulary.');
  }

  /**
   * Returns the default language code for a given entity type and bundle.
   *
   * @return string
   *   The default language code.
   */
  protected function getDefaultLangcode(): string {
    // Create a dummy entity to easily access the langcode field default value.
    return EntityTest::create(['type' => 'custom_bundle'])->get('langcode')->value;
  }

}