<?php

namespace Drupal\Tests\Core\Entity\KeyValueStore;

use Drupal\Core\Cache\MemoryCache\MemoryCache;
use Drupal\Core\Config\Entity\ConfigEntityInterface;
use Drupal\Core\DependencyInjection\ContainerBuilder;
use Drupal\Core\Entity\EntityFieldManagerInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\EntityMalformedException;
use Drupal\Core\Entity\EntityManager;
use Drupal\Core\Entity\EntityStorageException;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Language\Language;
use Drupal\Tests\UnitTestCase;
use Drupal\Core\Entity\KeyValueStore\KeyValueEntityStorage;

/**
 * @coversDefaultClass \Drupal\Core\Entity\KeyValueStore\KeyValueEntityStorage
 * @group Entity
 */
class KeyValueEntityStorageTest extends UnitTestCase {

  /**
   * The entity type.
   *
   * @var \Drupal\Core\Entity\EntityTypeInterface|\PHPUnit_Framework_MockObject_MockObject
   */
  protected $entityType;

  /**
   * The key value store.
   *
   * @var \Drupal\Core\KeyValueStore\KeyValueStoreInterface|\PHPUnit_Framework_MockObject_MockObject
   */
  protected $keyValueStore;

  /**
   * The module handler.
   *
   * @var \Drupal\Core\Extension\ModuleHandlerInterface|\PHPUnit_Framework_MockObject_MockObject
   */
  protected $moduleHandler;

  /**
   * The UUID service.
   *
   * @var \Drupal\Component\Uuid\UuidInterface|\PHPUnit_Framework_MockObject_MockObject
   */
  protected $uuidService;

  /**
   * The language manager.
   *
   * @var \Drupal\Core\Language\LanguageManagerInterface|\PHPUnit_Framework_MockObject_MockObject
   */
  protected $languageManager;

  /**
   * @var \Drupal\Core\Entity\KeyValueStore\KeyValueEntityStorage
   */
  protected $entityStorage;

  /**
   * The entity manager.
   *
   * @var \Drupal\Core\Entity\EntityManagerInterface|\PHPUnit_Framework_MockObject_MockObject
   */
  protected $entityManager;

  /**
   * The mocked entity type manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface|\PHPUnit_Framework_MockObject_MockObject
   */
  protected $entityTypeManager;

  /**
   * The mocked entity field manager.
   *
   * @var \Drupal\Core\Entity\EntityFieldManagerInterface|\PHPUnit_Framework_MockObject_MockObject
   */
  protected $entityFieldManager;

  /**
   * The mocked cache tags invalidator.
   *
   * @var \Drupal\Core\Cache\CacheTagsInvalidatorInterface|\PHPUnit_Framework_MockObject_MockObject
   */
  protected $cacheTagsInvalidator;

  /**
   * {@inheritdoc}
   */
  protected function setUp() {
    parent::setUp();
    $this->entityType = $this->getMock('Drupal\Core\Entity\EntityTypeInterface');
  }

  /**
   * Prepares the key value entity storage.
   *
   * @covers ::__construct
   *
   * @param string $uuid_key
   *   (optional) The entity key used for the UUID. Defaults to 'uuid'.
   */
  protected function setUpKeyValueEntityStorage($uuid_key = 'uuid') {
    $this->entityType->expects($this->atLeastOnce())
      ->method('getKey')
      ->will($this->returnValueMap([
        ['id', 'id'],
        ['uuid', $uuid_key],
        ['langcode', 'langcode'],
      ]));
    $this->entityType->expects($this->atLeastOnce())
      ->method('id')
      ->will($this->returnValue('test_entity_type'));
    $this->entityType->expects($this->any())
      ->method('getListCacheTags')
      ->willReturn(['test_entity_type_list']);

    $this->entityManager = new EntityManager();

    $this->entityTypeManager = $this->getMock(EntityTypeManagerInterface::class);
    $this->entityTypeManager->expects($this->any())
      ->method('getDefinition')
      ->with('test_entity_type')
      ->will($this->returnValue($this->entityType));

    $this->entityFieldManager = $this->getMock(EntityFieldManagerInterface::class);

    $this->cacheTagsInvalidator = $this->getMock('Drupal\Core\Cache\CacheTagsInvalidatorInterface');

    $this->keyValueStore = $this->getMock('Drupal\Core\KeyValueStore\KeyValueStoreInterface');
    $this->moduleHandler = $this->getMock('Drupal\Core\Extension\ModuleHandlerInterface');
    $this->uuidService = $this->getMock('Drupal\Component\Uuid\UuidInterface');
    $this->languageManager = $this->getMock('Drupal\Core\Language\LanguageManagerInterface');
    $language = new Language(['langcode' => 'en']);
    $this->languageManager->expects($this->any())
      ->method('getDefaultLanguage')
      ->will($this->returnValue($language));
    $this->languageManager->expects($this->any())
      ->method('getCurrentLanguage')
      ->will($this->returnValue($language));

    $this->entityStorage = new KeyValueEntityStorage($this->entityType, $this->keyValueStore, $this->uuidService, $this->languageManager, new MemoryCache());
    $this->entityStorage->setModuleHandler($this->moduleHandler);

    $container = new ContainerBuilder();
    $container->set('entity.manager', $this->entityManager);
    $container->set('entity_field.manager', $this->entityFieldManager);
    $container->set('entity_type.manager', $this->entityTypeManager);
    $container->set('language_manager', $this->languageManager);
    $container->set('cache_tags.invalidator', $this->cacheTagsInvalidator);
    // Inject the container into entity.manager so it can defer to
    // entity_type.manager and other services.
    $this->entityManager->setContainer($container);
    \Drupal::setContainer($container);
  }

  /**
   * @covers ::create
   * @covers ::doCreate
   */
  public function testCreateWithPredefinedUuid() {
    $this->entityType->expects($this->once())
      ->method('getClass')
      ->will($this->returnValue(get_class($this->getMockEntity())));
    $this->setUpKeyValueEntityStorage();

    $this->moduleHandler->expects($this->at(0))
      ->method('invokeAll')
      ->with('test_entity_type_create');
    $this->moduleHandler->expects($this->at(1))
      ->method('invokeAll')
      ->with('entity_create');
    $this->uuidService->expects($this->never())
      ->method('generate');

    $entity = $this->entityStorage->create(['id' => 'foo', 'uuid' => 'baz']);
    $this->assertInstanceOf('Drupal\Core\Entity\EntityInterface', $entity);
    $this->assertSame('foo', $entity->id());
    $this->assertSame('baz', $entity->uuid());
  }

  /**
   * @covers ::create
   * @covers ::doCreate
   */
  public function testCreateWithoutUuidKey() {
    // Set up the entity storage to expect no UUID key.
    $this->entityType->expects($this->once())
      ->method('getClass')
      ->will($this->returnValue(get_class($this->getMockEntity())));
    $this->setUpKeyValueEntityStorage(NULL);

    $this->moduleHandler->expects($this->at(0))
      ->method('invokeAll')
      ->with('test_entity_type_create');
    $this->moduleHandler->expects($this->at(1))
      ->method('invokeAll')
      ->with('entity_create');
    $this->uuidService->expects($this->never())
      ->method('generate');

    $entity = $this->entityStorage->create(['id' => 'foo', 'uuid' => 'baz']);
    $this->assertInstanceOf('Drupal\Core\Entity\EntityInterface', $entity);
    $this->assertSame('foo', $entity->id());
    $this->assertSame('baz', $entity->uuid());
  }

  /**
   * @covers ::create
   * @covers ::doCreate
   *
   * @return \Drupal\Core\Entity\EntityInterface
   */
  public function testCreate() {
    $entity = $this->getMockEntity('Drupal\Core\Entity\Entity', [], ['toArray']);
    $this->entityType->expects($this->once())
      ->method('getClass')
      ->will($this->returnValue(get_class($entity)));
    $this->setUpKeyValueEntityStorage();

    $this->moduleHandler->expects($this->at(0))
      ->method('invokeAll')
      ->with('test_entity_type_create');
    $this->moduleHandler->expects($this->at(1))
      ->method('invokeAll')
      ->with('entity_create');
    $this->uuidService->expects($this->once())
      ->method('generate')
      ->will($this->returnValue('bar'));

    $entity = $this->entityStorage->create(['id' => 'foo']);
    $this->assertInstanceOf('Drupal\Core\Entity\EntityInterface', $entity);
    $this->assertSame('foo', $entity->id());
    $this->assertSame('bar', $entity->uuid());
    return $entity;
  }

  /**
   * @covers ::save
   * @covers ::doSave
   *
   * @param \Drupal\Core\Entity\EntityInterface $entity
   *
   * @return \Drupal\Core\Entity\EntityInterface
   *
   * @depends testCreate
   */
  public function testSaveInsert(EntityInterface $entity) {
    $this->entityType->expects($this->once())
      ->method('getClass')
      ->will($this->returnValue(get_class($entity)));
    $this->setUpKeyValueEntityStorage();

    $expected = ['id' => 'foo'];
    $this->keyValueStore->expects($this->exactly(2))
      ->method('has')
      ->with('foo')
      ->will($this->returnValue(FALSE));
    $this->keyValueStore->expects($this->never())
      ->method('getMultiple');
    $this->keyValueStore->expects($this->never())
      ->method('delete');

    $entity->expects($this->atLeastOnce())
      ->method('toArray')
      ->will($this->returnValue($expected));

    $this->moduleHandler->expects($this->at(0))
      ->method('invokeAll')
      ->with('test_entity_type_presave');
    $this->moduleHandler->expects($this->at(1))
      ->method('invokeAll')
      ->with('entity_presave');
    $this->moduleHandler->expects($this->at(2))
      ->method('invokeAll')
      ->with('test_entity_type_insert');
    $this->moduleHandler->expects($this->at(3))
      ->method('invokeAll')
      ->with('entity_insert');
    $this->keyValueStore->expects($this->once())
      ->method('set')
      ->with('foo', $expected);
    $return = $this->entityStorage->save($entity);
    $this->assertSame(SAVED_NEW, $return);
    return $entity;
  }

  /**
   * @covers ::save
   * @covers ::doSave
   *
   * @param \Drupal\Core\Entity\EntityInterface $entity
   *
   * @return \Drupal\Core\Entity\EntityInterface
   *
   * @depends testSaveInsert
   */
  public function testSaveUpdate(EntityInterface $entity) {
    $this->entityType->expects($this->once())
      ->method('getClass')
      ->will($this->returnValue(get_class($entity)));
    $this->setUpKeyValueEntityStorage();

    $expected = ['id' => 'foo'];
    $this->keyValueStore->expects($this->exactly(2))
      ->method('has')
      ->with('foo')
      ->will($this->returnValue(TRUE));
    $this->keyValueStore->expects($this->once())
      ->method('getMultiple')
      ->with(['foo'])
      ->will($this->returnValue([['id' => 'foo']]));
    $this->keyValueStore->expects($this->never())
      ->method('delete');

    $this->moduleHandler->expects($this->at(0))
      ->method('getImplementations')
      ->with('entity_load')
      ->will($this->returnValue([]));
    $this->moduleHandler->expects($this->at(1))
      ->method('getImplementations')
      ->with('test_entity_type_load')
      ->will($this->returnValue([]));
    $this->moduleHandler->expects($this->at(2))
      ->method('invokeAll')
      ->with('test_entity_type_presave');
    $this->moduleHandler->expects($this->at(3))
      ->method('invokeAll')
      ->with('entity_presave');
    $this->moduleHandler->expects($this->at(4))
      ->method('invokeAll')
      ->with('test_entity_type_update');
    $this->moduleHandler->expects($this->at(5))
      ->method('invokeAll')
      ->with('entity_update');
    $this->keyValueStore->expects($this->once())
      ->method('set')
      ->with('foo', $expected);
    $return = $this->entityStorage->save($entity);
    $this->assertSame(SAVED_UPDATED, $return);
    return $entity;
  }

  /**
   * @covers ::save
   * @covers ::doSave
   */
  public function testSaveConfigEntity() {
    $this->setUpKeyValueEntityStorage();

    $entity = $this->getMockEntity('Drupal\Core\Config\Entity\ConfigEntityBase', [['id' => 'foo']], [
      'toArray',
      'preSave',
    ]);
    $entity->enforceIsNew();
    // When creating a new entity, the ID is tracked as the original ID.
    $this->assertSame('foo', $entity->getOriginalId());

    $expected = ['id' => 'foo'];
    $entity->expects($this->atLeastOnce())
      ->method('toArray')
      ->will($this->returnValue($expected));

    $this->keyValueStore->expects($this->exactly(2))
      ->method('has')
      ->with('foo')
      ->will($this->returnValue(FALSE));
    $this->keyValueStore->expects($this->once())
      ->method('set')
      ->with('foo', $expected);
    $this->keyValueStore->expects($this->never())
      ->method('delete');

    $return = $this->entityStorage->save($entity);
    $this->assertSame(SAVED_NEW, $return);
    return $entity;
  }

  /**
   * @covers ::save
   * @covers ::doSave
   *
   * @depends testSaveConfigEntity
   */
  public function testSaveRenameConfigEntity(ConfigEntityInterface $entity) {
    $this->entityType->expects($this->once())
      ->method('getClass')
      ->will($this->returnValue(get_class($entity)));
    $this->setUpKeyValueEntityStorage();

    $this->moduleHandler->expects($this->at(0))
      ->method('getImplementations')
      ->with('entity_load')
      ->will($this->returnValue([]));
    $this->moduleHandler->expects($this->at(1))
      ->method('getImplementations')
      ->with('test_entity_type_load')
      ->will($this->returnValue([]));
    $expected = ['id' => 'foo'];
    $entity->expects($this->once())
      ->method('toArray')
      ->will($this->returnValue($expected));
    $this->keyValueStore->expects($this->exactly(2))
      ->method('has')
      ->with('foo')
      ->will($this->returnValue(TRUE));
    $this->keyValueStore->expects($this->once())
      ->method('getMultiple')
      ->with(['foo'])
      ->will($this->returnValue([['id' => 'foo']]));
    $this->keyValueStore->expects($this->once())
      ->method('delete')
      ->with('foo');
    $this->keyValueStore->expects($this->once())
      ->method('set')
      ->with('bar', $expected);

    // Performing a rename does not change the original ID until saving.
    $this->assertSame('foo', $entity->getOriginalId());
    $entity->set('id', 'bar');
    $this->assertSame('foo', $entity->getOriginalId());

    $return = $this->entityStorage->save($entity);
    $this->assertSame(SAVED_UPDATED, $return);
    $this->assertSame('bar', $entity->getOriginalId());
  }

  /**
   * @covers ::save
   * @covers ::doSave
   */
  public function testSaveContentEntity() {
    $this->entityType->expects($this->any())
      ->method('getKeys')
      ->will($this->returnValue([
        'id' => 'id',
      ]));
    $this->setUpKeyValueEntityStorage();

    $expected = ['id' => 'foo'];
    $this->keyValueStore->expects($this->exactly(2))
      ->method('has')
      ->with('foo')
      ->will($this->returnValue(FALSE));
    $this->keyValueStore->expects($this->once())
      ->method('set')
      ->with('foo', $expected);
    $this->keyValueStore->expects($this->never())
      ->method('delete');
    $entity = $this->getMockEntity('Drupal\Core\Entity\ContentEntityBase', [], [
      'toArray',
      'id',
    ]);
    $entity->expects($this->atLeastOnce())
      ->method('id')
      ->will($this->returnValue('foo'));
    $entity->expects($this->once())
      ->method('toArray')
      ->will($this->returnValue($expected));
    $this->entityStorage->save($entity);
  }

  /**
   * @covers ::save
   * @covers ::doSave
   */
  public function testSaveInvalid() {
    $this->setUpKeyValueEntityStorage();

    $entity = $this->getMockEntity('Drupal\Core\Config\Entity\ConfigEntityBase');
    $this->keyValueStore->expects($this->never())
      ->method('has');
    $this->keyValueStore->expects($this->never())
      ->method('set');
    $this->keyValueStore->expects($this->never())
      ->method('delete');
    $this->setExpectedException(EntityMalformedException::class, 'The entity does not have an ID.');
    $this->entityStorage->save($entity);
  }

  /**
   * @covers ::save
   * @covers ::doSave
   */
  public function testSaveDuplicate() {
    $this->setUpKeyValueEntityStorage();

    $entity = $this->getMockEntity('Drupal\Core\Entity\Entity', [['id' => 'foo']]);
    $entity->enforceIsNew();
    $this->keyValueStore->expects($this->once())
      ->method('has')
      ->will($this->returnValue(TRUE));
    $this->keyValueStore->expects($this->never())
      ->method('set');
    $this->keyValueStore->expects($this->never())
      ->method('delete');
    $this->setExpectedException(EntityStorageException::class, "'test_entity_type' entity with ID 'foo' already exists");
    $this->entityStorage->save($entity);
  }

  /**
   * @covers ::load
   * @covers ::postLoad
   */
  public function testLoad() {
    $entity = $this->getMockEntity();
    $this->entityType->expects($this->once())
      ->method('getClass')
      ->will($this->returnValue(get_class($entity)));
    $this->setUpKeyValueEntityStorage();

    $this->keyValueStore->expects($this->once())
      ->method('getMultiple')
      ->with(['foo'])
      ->will($this->returnValue([['id' => 'foo']]));
    $this->moduleHandler->expects($this->at(0))
      ->method('getImplementations')
      ->with('entity_load')
      ->will($this->returnValue([]));
    $this->moduleHandler->expects($this->at(1))
      ->method('getImplementations')
      ->with('test_entity_type_load')
      ->will($this->returnValue([]));
    $entity = $this->entityStorage->load('foo');
    $this->assertInstanceOf('Drupal\Core\Entity\EntityInterface', $entity);
    $this->assertSame('foo', $entity->id());
  }

  /**
   * @covers ::load
   */
  public function testLoadMissingEntity() {
    $this->entityType->expects($this->once())
      ->method('getClass');
    $this->setUpKeyValueEntityStorage();

    $this->keyValueStore->expects($this->once())
      ->method('getMultiple')
      ->with(['foo'])
      ->will($this->returnValue([]));
    $this->moduleHandler->expects($this->never())
      ->method('getImplementations');
    $entity = $this->entityStorage->load('foo');
    $this->assertNull($entity);
  }

  /**
   * @covers ::loadMultiple
   * @covers ::postLoad
   * @covers ::mapFromStorageRecords
   * @covers ::doLoadMultiple
   */
  public function testLoadMultipleAll() {
    $expected['foo'] = $this->getMockEntity('Drupal\Core\Entity\Entity', [['id' => 'foo']]);
    $expected['bar'] = $this->getMockEntity('Drupal\Core\Entity\Entity', [['id' => 'bar']]);
    $this->entityType->expects($this->once())
      ->method('getClass')
      ->will($this->returnValue(get_class(reset($expected))));
    $this->setUpKeyValueEntityStorage();

    $this->keyValueStore->expects($this->once())
      ->method('getAll')
      ->will($this->returnValue([['id' => 'foo'], ['id' => 'bar']]));
    $this->moduleHandler->expects($this->at(0))
      ->method('getImplementations')
      ->with('entity_load')
      ->will($this->returnValue([]));
    $this->moduleHandler->expects($this->at(1))
      ->method('getImplementations')
      ->with('test_entity_type_load')
      ->will($this->returnValue([]));
    $entities = $this->entityStorage->loadMultiple();
    foreach ($entities as $id => $entity) {
      $this->assertInstanceOf('Drupal\Core\Entity\EntityInterface', $entity);
      $this->assertSame($id, $entity->id());
      $this->assertSame($id, $expected[$id]->id());
    }
  }

  /**
   * @covers ::loadMultiple
   * @covers ::postLoad
   * @covers ::mapFromStorageRecords
   * @covers ::doLoadMultiple
   */
  public function testLoadMultipleIds() {
    $entity = $this->getMockEntity('Drupal\Core\Entity\Entity', [['id' => 'foo']]);
    $this->entityType->expects($this->once())
      ->method('getClass')
      ->will($this->returnValue(get_class($entity)));
    $this->setUpKeyValueEntityStorage();

    $expected[] = $entity;
    $this->keyValueStore->expects($this->once())
      ->method('getMultiple')
      ->with(['foo'])
      ->will($this->returnValue([['id' => 'foo']]));
    $this->moduleHandler->expects($this->at(0))
      ->method('getImplementations')
      ->with('entity_load')
      ->will($this->returnValue([]));
    $this->moduleHandler->expects($this->at(1))
      ->method('getImplementations')
      ->with('test_entity_type_load')
      ->will($this->returnValue([]));
    $entities = $this->entityStorage->loadMultiple(['foo']);
    foreach ($entities as $id => $entity) {
      $this->assertInstanceOf('Drupal\Core\Entity\EntityInterface', $entity);
      $this->assertSame($id, $entity->id());
    }
  }

  /**
   * @covers ::loadRevision
   */
  public function testLoadRevision() {
    $this->setUpKeyValueEntityStorage();

    $this->assertSame(NULL, $this->entityStorage->loadRevision(1));
  }

  /**
   * @covers ::deleteRevision
   */
  public function testDeleteRevision() {
    $this->setUpKeyValueEntityStorage();

    $this->assertSame(NULL, $this->entityStorage->deleteRevision(1));
  }

  /**
   * @covers ::delete
   * @covers ::doDelete
   */
  public function testDelete() {
    $entities['foo'] = $this->getMockEntity('Drupal\Core\Entity\Entity', [['id' => 'foo']]);
    $entities['bar'] = $this->getMockEntity('Drupal\Core\Entity\Entity', [['id' => 'bar']]);
    $this->entityType->expects($this->once())
      ->method('getClass')
      ->will($this->returnValue(get_class(reset($entities))));
    $this->setUpKeyValueEntityStorage();

    $this->moduleHandler->expects($this->at(0))
      ->method('invokeAll')
      ->with('test_entity_type_predelete');
    $this->moduleHandler->expects($this->at(1))
      ->method('invokeAll')
      ->with('entity_predelete');
    $this->moduleHandler->expects($this->at(2))
      ->method('invokeAll')
      ->with('test_entity_type_predelete');
    $this->moduleHandler->expects($this->at(3))
      ->method('invokeAll')
      ->with('entity_predelete');
    $this->moduleHandler->expects($this->at(4))
      ->method('invokeAll')
      ->with('test_entity_type_delete');
    $this->moduleHandler->expects($this->at(5))
      ->method('invokeAll')
      ->with('entity_delete');
    $this->moduleHandler->expects($this->at(6))
      ->method('invokeAll')
      ->with('test_entity_type_delete');
    $this->moduleHandler->expects($this->at(7))
      ->method('invokeAll')
      ->with('entity_delete');

    $this->keyValueStore->expects($this->once())
      ->method('deleteMultiple')
      ->with(['foo', 'bar']);
    $this->entityStorage->delete($entities);
  }

  /**
   * @covers ::delete
   * @covers ::doDelete
   */
  public function testDeleteNothing() {
    $this->setUpKeyValueEntityStorage();

    $this->moduleHandler->expects($this->never())
      ->method($this->anything());
    $this->keyValueStore->expects($this->never())
      ->method('delete');
    $this->keyValueStore->expects($this->never())
      ->method('deleteMultiple');

    $this->entityStorage->delete([]);
  }

  /**
   * Creates an entity with specific methods mocked.
   *
   * @param string $class
   *   (optional) The concrete entity class to mock. Defaults to
   *   'Drupal\Core\Entity\Entity'.
   * @param array $arguments
   *   (optional) Arguments to pass to the constructor. An empty set of values
   *   and an entity type ID will be provided.
   * @param array $methods
   *   (optional) The methods to mock.
   *
   * @return \Drupal\Core\Entity\EntityInterface|\PHPUnit_Framework_MockObject_MockObject
   */
  public function getMockEntity($class = 'Drupal\Core\Entity\Entity', array $arguments = [], $methods = []) {
    // Ensure the entity is passed at least an array of values and an entity
    // type ID
    if (!isset($arguments[0])) {
      $arguments[0] = [];
    }
    if (!isset($arguments[1])) {
      $arguments[1] = 'test_entity_type';
    }
    return $this->getMockForAbstractClass($class, $arguments, '', TRUE, TRUE, TRUE, $methods);
  }

}

namespace Drupal\Core\Entity\KeyValueStore;

if (!defined('SAVED_NEW')) {
  define('SAVED_NEW', 1);
}
if (!defined('SAVED_UPDATED')) {
  define('SAVED_UPDATED', 2);
}
