class HistoryTest

class HistoryTest extends BrowserTestBase {
  use AssertPageCacheContextsAndTagsTrait;
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'node',
    'history',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * The main user for testing.
   *
   * @var object
   */
  protected $user;
  
  /**
   * A page node for which to check content statistics.
   *
   * @var object
   */
  protected $testNode;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->drupalCreateContentType([
      'type' => 'page',
      'name' => 'Basic page',
    ]);
    $this->user = $this->drupalCreateUser([
      'create page content',
      'edit own page content',
      'access content',
    ]);
    $this->drupalLogin($this->user);
    $this->testNode = $this->drupalCreateNode([
      'type' => 'page',
      'uid' => $this->user
        ->id(),
    ]);
  }
  
  /**
   * Get node read timestamps from the server for the current user.
   *
   * @param array $node_ids
   *   An array of node IDs.
   *
   * @return \Psr\Http\Message\ResponseInterface
   *   The response object.
   */
  protected function getNodeReadTimestamps(array $node_ids) {
    // Perform HTTP request.
    $http_client = $this->getHttpClient();
    $url = Url::fromRoute('history.get_last_node_view')->setAbsolute()
      ->toString();
    return $http_client->request('POST', $url, [
      'form_params' => [
        'node_ids' => $node_ids,
      ],
      'cookies' => $this->getSessionCookies(),
      'http_errors' => FALSE,
    ]);
  }
  
  /**
   * Mark a node as read for the current user.
   *
   * @param int $node_id
   *   A node ID.
   *
   * @return \Psr\Http\Message\ResponseInterface
   *   The response body.
   */
  protected function markNodeAsRead($node_id) {
    $http_client = $this->getHttpClient();
    $url = Url::fromRoute('history.read_node', [
      'node' => $node_id,
    ], [
      'absolute' => TRUE,
    ])->toString();
    return $http_client->request('POST', $url, [
      'cookies' => $this->getSessionCookies(),
      'http_errors' => FALSE,
    ]);
  }
  
  /**
   * Verifies that the history endpoints work.
   */
  public function testHistory() {
    $nid = $this->testNode
      ->id();
    // Verify that previews of new entities do not create the history.
    $this->drupalGet("node/add/page");
    $this->submitForm([
      'title[0][value]' => 'Unsaved page',
    ], 'Preview');
    $this->assertArrayNotHasKey('ajaxPageState', $this->getDrupalSettings());
    // Retrieve "last read" timestamp for test node, for the current user.
    $response = $this->getNodeReadTimestamps([
      $nid,
    ]);
    $this->assertEquals(200, $response->getStatusCode());
    $json = Json::decode($response->getBody());
    $this->assertSame([
      1 => 0,
    ], $json, 'The node has not yet been read.');
    // View the node.
    $this->drupalGet('node/' . $nid);
    $this->assertCacheContext('user.roles:authenticated');
    // JavaScript present to record the node read.
    $settings = $this->getDrupalSettings();
    $libraries = explode(',', $settings['ajaxPageState']['libraries']);
    $this->assertContains('history/mark-as-read', $libraries, 'history/mark-as-read library is present.');
    $this->assertEquals([
      $nid => TRUE,
    ], $settings['history']['nodesToMarkAsRead'], 'drupalSettings to mark node as read are present.');
    // Simulate JavaScript: perform HTTP request to mark node as read.
    $response = $this->markNodeAsRead($nid);
    $this->assertEquals(200, $response->getStatusCode());
    $timestamp = Json::decode($response->getBody());
    $this->assertIsNumeric($timestamp);
    // Retrieve "last read" timestamp for test node, for the current user.
    $response = $this->getNodeReadTimestamps([
      $nid,
    ]);
    $this->assertEquals(200, $response->getStatusCode());
    $json = Json::decode($response->getBody());
    $this->assertSame([
      1 => $timestamp,
    ], $json, 'The node has been read.');
    // Failing to specify node IDs for the first endpoint should return a 404.
    $response = $this->getNodeReadTimestamps([]);
    $this->assertEquals(404, $response->getStatusCode());
    // Verify that previews of existing entities do not update the history.
    $this->drupalGet("node/{$nid}/edit");
    $this->submitForm([], 'Preview');
    $this->assertArrayNotHasKey('ajaxPageState', $this->getDrupalSettings());
    // Accessing either endpoint as the anonymous user should return a 403.
    $this->drupalLogout();
    $response = $this->getNodeReadTimestamps([
      $nid,
    ]);
    $this->assertEquals(403, $response->getStatusCode());
    $response = $this->getNodeReadTimestamps([]);
    $this->assertEquals(403, $response->getStatusCode());
    $response = $this->markNodeAsRead($nid);
    $this->assertEquals(403, $response->getStatusCode());
    // Additional check to ensure that we did not forget to verify anything.
    $rows = \Drupal::database()->query('SELECT * FROM {history}')
      ->fetchAll();
    $this->assertCount(1, $rows);
    $this->assertSame($this->user
      ->id(), $rows[0]->uid);
    $this->assertSame($this->testNode
      ->id(), $rows[0]->nid);
    $this->assertSame($timestamp, (int) $rows[0]->timestamp);
  }

}