<?php

declare(strict_types=1);

namespace Drupal\Tests\views\Kernel\Handler;

use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Form\FormState;
use Drupal\Tests\block\Traits\BlockCreationTrait;
use Drupal\Tests\views\Kernel\ViewsKernelTestBase;
use Drupal\views\Entity\View;
use Drupal\views\Views;

/**
 * Tests the generic entity area handler.
 *
 * @group views
 * @see \Drupal\views\Plugin\views\area\Entity
 */
class AreaEntityTest extends ViewsKernelTestBase {

  use BlockCreationTrait;

  /**
   * {@inheritdoc}
   */
  protected static $modules = ['entity_test', 'user', 'block'];

  /**
   * Views used by this test.
   *
   * @var array
   */
  public static $testViews = ['test_entity_area'];

  /**
   * {@inheritdoc}
   */
  protected function setUp($import_test_views = TRUE): void {
    parent::setUp();
  }

  /**
   * {@inheritdoc}
   */
  protected function setUpFixtures(): void {
    // Install the themes used for this test.
    $this->container->get('theme_installer')->install(['olivero']);
    $this->container->get('config.factory')->getEditable('system.theme')->set('default', 'olivero')->save();

    $this->installEntitySchema('user');
    $this->installEntitySchema('entity_test');
    $this->installConfig(['entity_test']);

    $this->placeBlock('system_main_block', ['id' => 'test_block']);

    parent::setUpFixtures();
  }

  /**
   * Tests views data for entity area handlers.
   */
  public function testEntityAreaData(): void {
    $data = $this->container->get('views.views_data')->get('views');
    $entity_types = $this->container->get('entity_type.manager')->getDefinitions();

    $expected_entities = array_filter($entity_types, function (EntityTypeInterface $entity_type) {
      return $entity_type->hasViewBuilderClass();
    });

    // Test that all expected entity types have data.
    foreach (array_keys($expected_entities) as $entity) {
      $this->assertNotEmpty($data['entity_' . $entity], "Views entity '$entity' should have a data area.");
      // Test that entity_type is set correctly in the area data.
      $this->assertEquals($data['entity_' . $entity]['area']['entity_type'], $entity, "Correct entity_type set for $entity");
    }

    $expected_entities = array_filter($entity_types, function (EntityTypeInterface $type) {
      return !$type->hasViewBuilderClass();
    });

    // Test that no configuration entity types have data.
    foreach (array_keys($expected_entities) as $entity) {
      $this->assertArrayNotHasKey('entity_' . $entity, $data, "Views config entity '$entity' should not have a data area.");
    }
  }

  /**
   * Tests the area handler.
   */
  public function testEntityArea(): void {
    /** @var \Drupal\Core\Entity\EntityInterface[] $entities */
    $entities = [];
    for ($i = 0; $i < 3; $i++) {
      $random_label = $this->randomMachineName();
      $data = ['bundle' => 'entity_test', 'name' => $random_label];
      $entity_test = $this->container->get('entity_type.manager')
        ->getStorage('entity_test')
        ->create($data);

      $uuid_map[0] = 'aa0c61cb-b7bb-4795-972a-493dabcf529c';
      $uuid_map[1] = '62cef0ff-6f30-4f7a-b9d6-a8ed5a3a6bf3';
      $uuid_map[2] = '3161d6e9-3326-4719-b513-8fa68a731ba2';
      $entity_test->uuid->value = $uuid_map[$i];

      $entity_test->save();
      $entities[] = $entity_test;
      \Drupal::state()
        ->set('entity_test_entity_access.view.' . $entity_test->id(), $i != 2);
    }

    $this->doTestCalculateDependencies();
    $this->doTestRender($entities);
  }

  /**
   * Tests rendering the entity area handler.
   *
   * @param \Drupal\Core\Entity\EntityInterface[] $entities
   *   The entities.
   */
  public function doTestRender($entities): void {
    /** @var \Drupal\Core\Render\RendererInterface $renderer */
    $renderer = $this->container->get('renderer');
    $view = Views::getView('test_entity_area');
    $preview = $view->preview('default', [$entities[1]->id()]);
    $this->setRawContent(\Drupal::service('renderer')->renderRoot($preview));
    $view_class = 'js-view-dom-id-' . $view->dom_id;
    $header_xpath = '//div[@class = "' . $view_class . '"]/header[1]';
    $footer_xpath = '//div[@class = "' . $view_class . '"]/footer[1]';

    $result = $this->xpath($header_xpath);
    $this->assertStringContainsString($entities[0]->label(), (string) $result[0], 'The rendered entity appears in the header of the view.');
    $this->assertStringContainsString('full', (string) $result[0], 'The rendered entity appeared in the right view mode.');

    $result = $this->xpath($footer_xpath);
    $this->assertStringContainsString($entities[1]->label(), (string) $result[0], 'The rendered entity appears in the footer of the view.');
    $this->assertStringContainsString('full', (string) $result[0], 'The rendered entity appeared in the right view mode.');

    $preview = $view->preview('default', [$entities[1]->id()]);
    $this->setRawContent($renderer->renderRoot($preview));

    $result = $this->xpath($header_xpath);
    $this->assertStringContainsString($entities[0]->label(), (string) $result[0], 'The rendered entity appears in the header of the view.');
    $this->assertStringContainsString('full', (string) $result[0], 'The rendered entity appeared in the right view mode.');

    $result = $this->xpath($footer_xpath);
    $this->assertStringContainsString($entities[1]->label(), (string) $result[0], 'The rendered entity appears in the footer of the view.');
    $this->assertStringContainsString('full', (string) $result[0], 'The rendered entity appeared in the right view mode.');

    // Mark entity_test test view_mode as customizable.
    $entity_view_mode = \Drupal::entityTypeManager()->getStorage('entity_view_mode')->load('entity_test.test');
    $entity_view_mode->enable();
    $entity_view_mode->save();

    // Change the view mode of the area handler.
    $view = Views::getView('test_entity_area');
    $item = $view->getHandler('default', 'header', 'entity_entity_test');
    $item['view_mode'] = 'test';
    $view->setHandler('default', 'header', 'entity_entity_test', $item);

    $preview = $view->preview('default', [$entities[1]->id()]);
    $this->setRawContent($renderer->renderRoot($preview));
    $view_class = 'js-view-dom-id-' . $view->dom_id;
    $result = $this->xpath('//div[@class = "' . $view_class . '"]/header[1]');
    $this->assertStringContainsString($entities[0]->label(), (string) $result[0], 'The rendered entity appears in the header of the view.');
    $this->assertStringContainsString('test', (string) $result[0], 'The rendered entity appeared in the right view mode.');

    // Test entity access.
    $view = Views::getView('test_entity_area');
    $preview = $view->preview('default', [$entities[2]->id()]);
    $this->setRawContent($renderer->renderRoot($preview));
    $view_class = 'js-view-dom-id-' . $view->dom_id;
    $result = $this->xpath('//div[@class = "' . $view_class . '"]/footer[1]');
    $this->assertStringNotContainsString($entities[2]->label(), (string) $result[0], 'The rendered entity does not appear in the footer of the view.');

    // Test the available view mode options.
    $form = [];
    $form_state = (new FormState())
      ->set('type', 'header');
    /** @var \Drupal\views\Plugin\views\area\DisplayLink $display_handler */
    $display_handler = $view->display_handler->getHandler('header', 'entity_entity_test');
    $display_handler->buildOptionsForm($form, $form_state);
    $this->assertTrue(isset($form['view_mode']['#options']['test']), 'Ensure that the test view mode is available.');
    $this->assertTrue(isset($form['view_mode']['#options']['default']), 'Ensure that the default view mode is available.');
  }

  /**
   * Tests the calculation of the rendered dependencies.
   */
  public function doTestCalculateDependencies(): void {
    $view = View::load('test_entity_area');

    $dependencies = $view->calculateDependencies()->getDependencies();
    // Ensure that both config and content entity dependencies are calculated.
    $this->assertEquals([
      'config' => ['block.block.test_block'],
      'content' => ['entity_test:entity_test:aa0c61cb-b7bb-4795-972a-493dabcf529c'],
      'module' => ['views_test_data'],
    ], $dependencies);
  }

}
