<?php

namespace Drupal\Tests\paragraphs\Kernel;

use Drupal\Core\Entity\Entity;
use Drupal\Core\Site\Settings;
use Drupal\field\Entity\FieldConfig;
use Drupal\field\Entity\FieldStorageConfig;
use Drupal\language\Entity\ConfigurableLanguage;
use Drupal\node\Entity\Node;
use Drupal\node\Entity\NodeType;
use Drupal\paragraphs\Entity\Paragraph;
use Drupal\paragraphs\Entity\ParagraphsType;
use Drupal\KernelTests\KernelTestBase;
use Drupal\user\Entity\User;

/**
 * Tests the ERR composite relationship upgrade path.
 *
 * @group paragraphs
 */
class ParagraphsCompositeRelationshipTest extends KernelTestBase {

  /**
   * Modules to enable.
   *
   * @var array
   */
  public static $modules = array(
    'paragraphs',
    'node',
    'user',
    'system',
    'field',
    'entity_reference_revisions',
    'language',
  );

  /**
   * {@inheritdoc}
   */
  protected function setUp() {
    parent::setUp();
    // Create paragraphs and article content types.
    $values = ['type' => 'article', 'name' => 'Article'];
    $node_type = NodeType::create($values);
    $node_type->save();
    $this->installEntitySchema('user');
    $this->installEntitySchema('node');
    $this->installEntitySchema('paragraph');
    $this->installSchema('system', ['sequences']);
    $this->installSchema('node', ['node_access']);
    \Drupal::moduleHandler()->loadInclude('paragraphs', 'install');
  }

  /**
   * Tests the revision of paragraphs.
   */
  public function testParagraphsRevisions() {
    // Create the paragraph type.
    $paragraph_type = ParagraphsType::create(array(
      'label' => 'test_text',
      'id' => 'test_text',
    ));
    $paragraph_type->save();

    $paragraph_type_nested = ParagraphsType::create(array(
      'label' => 'test_nested',
      'id' => 'test_nested',
    ));
    $paragraph_type_nested->save();

    // Add a paragraph field to the article.
    $field_storage = FieldStorageConfig::create(array(
      'field_name' => 'nested_paragraph_field',
      'entity_type' => 'paragraph',
      'type' => 'entity_reference_revisions',
      'cardinality' => '-1',
      'settings' => array(
        'target_type' => 'paragraph'
      ),
    ));
    $field_storage->save();
    $field = FieldConfig::create(array(
      'field_storage' => $field_storage,
      'bundle' => 'test_nested',
    ));
    $field->save();

    // Add a paragraph field to the article.
    $field_storage = FieldStorageConfig::create(array(
      'field_name' => 'node_paragraph_field',
      'entity_type' => 'node',
      'type' => 'entity_reference_revisions',
      'cardinality' => '-1',
      'settings' => array(
        'target_type' => 'paragraph'
      ),
    ));
    $field_storage->save();
    $field = FieldConfig::create(array(
      'field_storage' => $field_storage,
      'bundle' => 'article',
    ));
    $field->save();

    // Add a paragraph field to the user.
    $field_storage = FieldStorageConfig::create(array(
      'field_name' => 'user_paragraph_field',
      'entity_type' => 'user',
      'type' => 'entity_reference_revisions',
      'settings' => array(
        'target_type' => 'paragraph'
      ),
    ));
    $field_storage->save();
    $field = FieldConfig::create(array(
      'field_storage' => $field_storage,
      'bundle' => 'user',
    ));
    $field->save();

    // Create a paragraph.
    $paragraph1 = Paragraph::create([
      'title' => 'Paragraph',
      'type' => 'test_text',
    ]);
    $paragraph1->save();
    // Create another paragraph.
    $paragraph2 = Paragraph::create([
      'title' => 'Paragraph',
      'type' => 'test_text',
    ]);
    $paragraph2->save();
    // Create another paragraph.
    $paragraph3 = Paragraph::create([
      'title' => 'Paragraph',
      'type' => 'test_text',
    ]);
    $paragraph3->save();
    // Create another paragraph.
    $paragraph_nested_children1 = Paragraph::create([
      'title' => 'Paragraph',
      'type' => 'test_text',
    ]);
    $paragraph_nested_children1->save();
    // Create another paragraph.
    $paragraph_nested_children2 = Paragraph::create([
      'title' => 'Paragraph',
      'type' => 'test_text',
    ]);
    $paragraph_nested_children2->save();

    // Create another paragraph.
    $paragraph4_nested_parent = Paragraph::create([
      'title' => 'Paragraph',
      'type' => 'test_nested',
      'nested_paragraph_field' => [$paragraph_nested_children1, $paragraph_nested_children2],
    ]);
    $paragraph4_nested_parent->save();

    // Create another paragraph.
    $paragraph_user_1 = Paragraph::create([
      'title' => 'Paragraph',
      'type' => 'test_text',
    ]);
    $paragraph_user_1->save();

    // Create a node with two paragraphs.
    $node = Node::create([
      'title' => $this->randomMachineName(),
      'type' => 'article',
      'node_paragraph_field' => array($paragraph1, $paragraph2, $paragraph3, $paragraph4_nested_parent),
      ]);
    $node->save();

    // Create an user with a paragraph.
    $user = User::create([
      'name' => 'test',
      'user_paragraph_field' => $paragraph_user_1,
    ]);
    $user->save();
    $settings = Settings::getAll();
    $settings['paragraph_limit'] = 1;
    new Settings($settings);

    // Unset the parent field name, type and id of paragraph1.
    /** @var \Drupal\paragraphs\Entity\Paragraph $paragraph */
    $paragraph = Paragraph::load($paragraph1->id());
    $paragraph->set('parent_field_name', NULL);
    $paragraph->set('parent_type', NULL);
    $paragraph->set('parent_id', NULL);
    $paragraph->setNewRevision(FALSE);
    $paragraph->save();

    // Unset the parent field name, type and id of paragraph2.
    $paragraph = Paragraph::load($paragraph2->id());
    $paragraph->set('parent_field_name', NULL);
    $paragraph->set('parent_type', NULL);
    $paragraph->set('parent_id', NULL);
    $paragraph->setNewRevision(FALSE);
    $paragraph->save();

    // Unset the parent field name, type and id of $paragraph_nested_parent.
    $paragraph = Paragraph::load($paragraph4_nested_parent->id());
    $paragraph->set('parent_field_name', NULL);
    $paragraph->set('parent_type', NULL);
    $paragraph->set('parent_id', NULL);
    $paragraph->setNewRevision(FALSE);
    $paragraph->save();

    // Unset the parent field name, type and id of $paragraph_nested_children1.
    $paragraph = Paragraph::load($paragraph_nested_children1->id());
    $paragraph->set('parent_field_name', NULL);
    $paragraph->set('parent_type', NULL);
    $paragraph->set('parent_id', NULL);
    $paragraph->setNewRevision(FALSE);
    $paragraph->save();

    // Unset the parent field name, type and id of paragraph_user_1.
    /** @var \Drupal\paragraphs\Entity\Paragraph $paragraph */
    $paragraph = Paragraph::load($paragraph_user_1->id());
    $paragraph->set('parent_field_name', NULL);
    $paragraph->set('parent_type', NULL);
    $paragraph->set('parent_id', NULL);
    $paragraph->setNewRevision(FALSE);
    $paragraph->save();

    // Create a revision for node.
    /** @var \Drupal\node\Entity\Node $node_revision1 */
    $node_revision1 = Node::load($node->id());
    /** @var \Drupal\paragraphs\Entity\Paragraph $paragraph1_revision1 */
    $paragraph1_revision1 = Paragraph::load($paragraph1->id());
    $paragraph1_revision1->setNewRevision(TRUE);
    $paragraph1_revision1->save();
    /** @var \Drupal\paragraphs\Entity\Paragraph $paragraph2_revision1 */
    $paragraph2_revision1 = Paragraph::load($paragraph2->id());
    $paragraph2_revision1->setNewRevision(TRUE);
    $paragraph2_revision1->save();
    $node_revision1->set('node_paragraph_field', [$paragraph1_revision1, $paragraph2_revision1]);
    $node_revision1->setNewRevision(TRUE);
    $node_revision1->save();

    // Unset the parent field name, type and id of paragraph2_revision1.
    $paragraph2_revision1 = Paragraph::load($paragraph2_revision1->id());
    $paragraph2_revision1->set('parent_field_name', NULL);
    $paragraph2_revision1->set('parent_type', NULL);
    $paragraph2_revision1->set('parent_id', NULL);
    $paragraph2_revision1->setNewRevision(FALSE);
    $paragraph2_revision1->save();

    // Create another revision for node.
    /** @var \Drupal\node\Entity\Node $node_revision2 */
    $node_revision2 = Node::load($node->id());
    /** @var \Drupal\paragraphs\Entity\Paragraph $paragraph1_revision2 */
    $paragraph1_revision2 = Paragraph::load($paragraph1->id());
    $paragraph1_revision2->setNewRevision(TRUE);
    $paragraph1_revision2->save();
    $node_revision2->set('node_paragraph_field', [$paragraph1_revision2]);
    $node_revision2->setNewRevision(TRUE);
    $node_revision2->save();

    // Deletion of referenced paragraphs should not break updates.
    $paragraph3->delete();
    \Drupal::moduleHandler()->loadInclude('paragraphs', 'post_update.php');
    // Run update function and check #finished.
    $sandbox = [];
    do {
      paragraphs_post_update_set_paragraphs_parent_fields($sandbox);
    } while ($sandbox['#finished'] < 1);

    $node_paragraph1 = Paragraph::load($paragraph1->id())->toArray();
    $this->assertParagraphField($node_paragraph1, $node->id(), $node->getEntityTypeId(), 'node_paragraph_field');

    $paragraph1_revision1 = \Drupal::entityTypeManager()->getStorage('paragraph')->loadRevision($paragraph1_revision1->getRevisionId())->toArray();
    $this->assertParagraphField($paragraph1_revision1, $node->id(), $node->getEntityTypeId(), 'node_paragraph_field');

    $paragraph1_revision2 = \Drupal::entityTypeManager()->getStorage('paragraph')->loadRevision($paragraph1_revision2->getRevisionId())->toArray();
    $this->assertParagraphField($paragraph1_revision2, $node->id(), $node->getEntityTypeId(), 'node_paragraph_field');

    $node_paragraph2 = Paragraph::load($paragraph2->id())->toArray();
    $this->assertParagraphField($node_paragraph2, $node->id(), $node->getEntityTypeId(), 'node_paragraph_field');

    $user_paragraph = Paragraph::load($paragraph_user_1->id())->toArray();
    $this->assertParagraphField($user_paragraph, $user->id(), $user->getEntityTypeId(), 'user_paragraph_field');

    $nested_paragraph_parent = Paragraph::load($paragraph4_nested_parent->id())->toArray();
    $this->assertParagraphField($nested_paragraph_parent, $node->id(), $node->getEntityTypeId(), 'node_paragraph_field');

    $nested_paragraph_children = Paragraph::load($paragraph_nested_children1->id())->toArray();
    $this->assertParagraphField($nested_paragraph_children, $paragraph4_nested_parent->id(), $paragraph4_nested_parent->getEntityTypeId(), 'nested_paragraph_field');

    // Add the german language.
    ConfigurableLanguage::create(['id' => 'de'])->save();

    // Create a new paragraph and add a german translation.
    $paragraph = Paragraph::create([
      'title' => 'Paragraph',
      'type' => 'test_text'
    ]);
    $paragraph->addTranslation('de');
    $paragraph->save();

    // Load a node and add a german translation.
    $node = Node::load($node->id());
    $node->addTranslation('de', [
      'title' => 'german',
      'node_paragraph_field' => $paragraph
    ]);
    $node->save();

    // Load the paragraph and its german translation.
    $paragraph = Paragraph::load($paragraph->id());
    $paragraph = $paragraph->getTranslation('de');

    // Get the parent entity.
    $parent = $paragraph->getParentEntity();
    static::assertEquals($parent->language()->getId(), 'de');

    // Test if the needs save variable is set as false after saving.
    $paragraph_needs_save = Paragraph::create([
      'title' => 'Paragraph',
      'type' => 'test_text',
    ]);
    $paragraph_needs_save->setNeedsSave(TRUE);
    $paragraph_needs_save->save();
    $this->assertFalse($paragraph_needs_save->needsSave());
  }

  /**
   * Checks if $paragraph fields match with host / parent.
   *
   * @param $paragraph
   *   The paragraph entity to check.
   * @param $id
   *   The parent entity id.
   * @param $entity_type
   *   The parent entity type.
   * @param $field_name
   *   The parent entity field name.
   */
  public function assertParagraphField($paragraph, $id, $entity_type, $field_name) {
    self::assertEquals($paragraph['parent_id'][0]['value'], $id, 'Match parent id.');
    self::assertEquals($paragraph['parent_type'][0]['value'], $entity_type, 'Matching parent type.');
    self::assertEquals($paragraph['parent_field_name'][0]['value'], $field_name, 'Matching parent field name.');
  }
}