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<?php

namespace Drupal\Tests\node\Functional;

use Drupal\node\Entity\NodeType;

/**
 * Tests behavior of the node access subsystem if the base table is not node.
 *
 * @group node
 */
class NodeAccessBaseTableTest extends NodeTestBase {

  /**
   * Modules to enable.
   *
   * @var array
   */
  public static $modules = ['node_access_test', 'views'];

  /**
   * The installation profile to use with this test.
   *
   * This test class requires the "tags" taxonomy field.
   *
   * @var string
   */
  protected $profile = 'standard';

  /**
   * Nodes by user.
   *
   * @var array
   */
  protected $nodesByUser;

  /**
   * A public tid.
   *
   * @var \Drupal\Core\Database\StatementInterface
   */
  protected $publicTid;

  /**
   * A private tid.
   *
   * @var \Drupal\Core\Database\StatementInterface
   */
  protected $privateTid;

  /**
   * A web user.
   */
  protected $webUser;

  /**
   * The nids visible.
   *
   * @var array
   */
  protected $nidsVisible;

  protected function setUp() {
    parent::setUp();

    node_access_test_add_field(NodeType::load('article'));

    node_access_rebuild();
    \Drupal::state()->set('node_access_test.private', TRUE);
  }

  /**
   * Tests the "private" node access functionality.
   *
   * - Create 2 users with "access content" and "create article" permissions.
   * - Each user creates one private and one not private article.
   *
   * - Test that each user can view the other user's non-private article.
   * - Test that each user cannot view the other user's private article.
   * - Test that each user finds only appropriate (non-private + own private)
   *   in taxonomy listing.
   * - Create another user with 'view any private content'.
   * - Test that user 4 can view all content created above.
   * - Test that user 4 can view all content on taxonomy listing.
   */
  public function testNodeAccessBasic() {
    $num_simple_users = 2;
    $simple_users = [];

    // Nodes keyed by uid and nid: $nodes[$uid][$nid] = $is_private;
    $this->nodesByUser = [];
    // Titles keyed by nid.
    $titles = [];
    // Array of nids marked private.
    $private_nodes = [];
    for ($i = 0; $i < $num_simple_users; $i++) {
      $simple_users[$i] = $this->drupalCreateUser(['access content', 'create article content']);
    }
    foreach ($simple_users as $this->webUser) {
      $this->drupalLogin($this->webUser);
      foreach ([0 => 'Public', 1 => 'Private'] as $is_private => $type) {
        $edit = [
          'title[0][value]' => t('@private_public Article created by @user', ['@private_public' => $type, '@user' => $this->webUser->getAccountName()]),
        ];
        if ($is_private) {
          $edit['private[0][value]'] = TRUE;
          $edit['body[0][value]'] = 'private node';
          $edit['field_tags[target_id]'] = 'private';
        }
        else {
          $edit['body[0][value]'] = 'public node';
          $edit['field_tags[target_id]'] = 'public';
        }

        $this->drupalPostForm('node/add/article', $edit, t('Save'));
        $node = $this->drupalGetNodeByTitle($edit['title[0][value]']);
        $this->assertEqual($is_private, (int) $node->private->value, 'The private status of the node was properly set in the node_access_test table.');
        if ($is_private) {
          $private_nodes[] = $node->id();
        }
        $titles[$node->id()] = $edit['title[0][value]'];
        $this->nodesByUser[$this->webUser->id()][$node->id()] = $is_private;
      }
    }
    $this->publicTid = db_query('SELECT tid FROM {taxonomy_term_field_data} WHERE name = :name AND default_langcode = 1', [':name' => 'public'])->fetchField();
    $this->privateTid = db_query('SELECT tid FROM {taxonomy_term_field_data} WHERE name = :name AND default_langcode = 1', [':name' => 'private'])->fetchField();
    $this->assertTrue($this->publicTid, 'Public tid was found');
    $this->assertTrue($this->privateTid, 'Private tid was found');
    foreach ($simple_users as $this->webUser) {
      $this->drupalLogin($this->webUser);
      // Check own nodes to see that all are readable.
      foreach ($this->nodesByUser as $uid => $data) {
        foreach ($data as $nid => $is_private) {
          $this->drupalGet('node/' . $nid);
          if ($is_private) {
            $should_be_visible = $uid == $this->webUser->id();
          }
          else {
            $should_be_visible = TRUE;
          }
          $this->assertResponse($should_be_visible ? 200 : 403, strtr('A %private node by user %uid is %visible for user %current_uid.', [
            '%private' => $is_private ? 'private' : 'public',
            '%uid' => $uid,
            '%visible' => $should_be_visible ? 'visible' : 'not visible',
            '%current_uid' => $this->webUser->id(),
          ]));
        }
      }

      // Check to see that the correct nodes are shown on taxonomy/private
      // and taxonomy/public.
      $this->assertTaxonomyPage(FALSE);
    }

    // Now test that a user with 'node test view' permissions can view content.
    $access_user = $this->drupalCreateUser(['access content', 'create article content', 'node test view', 'search content']);
    $this->drupalLogin($access_user);

    foreach ($this->nodesByUser as $private_status) {
      foreach ($private_status as $nid => $is_private) {
        $this->drupalGet('node/' . $nid);
        $this->assertResponse(200);
      }
    }

    // This user should be able to see all of the nodes on the relevant
    // taxonomy pages.
    $this->assertTaxonomyPage(TRUE);

    // Rebuild the node access permissions, repeat the test. This is done to
    // ensure that node access is rebuilt correctly even if the current user
    // does not have the bypass node access permission.
    node_access_rebuild();

    foreach ($this->nodesByUser as $private_status) {
      foreach ($private_status as $nid => $is_private) {
        $this->drupalGet('node/' . $nid);
        $this->assertResponse(200);
      }
    }

    // This user should be able to see all of the nodes on the relevant
    // taxonomy pages.
    $this->assertTaxonomyPage(TRUE);
  }

  /**
   * Checks taxonomy/term listings to ensure only accessible nodes are listed.
   *
   * @param $is_admin
   *   A boolean indicating whether the current user is an administrator. If
   *   TRUE, all nodes should be listed. If FALSE, only public nodes and the
   *   user's own private nodes should be listed.
   */
  protected function assertTaxonomyPage($is_admin) {
    foreach ([$this->publicTid, $this->privateTid] as $tid_is_private => $tid) {
      $this->drupalGet("taxonomy/term/$tid");
      $this->nidsVisible = [];
      foreach ($this->xpath("//a[text()='Read more']") as $link) {
        // See also testTranslationRendering() in NodeTranslationUITest.
        $this->assertTrue(preg_match('|node/(\d+)$|', $link->getAttribute('href'), $matches), 'Read more points to a node');
        $this->nidsVisible[$matches[1]] = TRUE;
      }
      foreach ($this->nodesByUser as $uid => $data) {
        foreach ($data as $nid => $is_private) {
          // Private nodes should be visible on the private term page,
          // public nodes should be visible on the public term page.
          $should_be_visible = $tid_is_private == $is_private;
          // Non-administrators can only see their own nodes on the private
          // term page.
          if (!$is_admin && $tid_is_private) {
            $should_be_visible = $should_be_visible && $uid == $this->webUser->id();
          }
          $this->assertIdentical(isset($this->nidsVisible[$nid]), $should_be_visible, strtr('A %private node by user %uid is %visible for user %current_uid on the %tid_is_private page.', [
            '%private' => $is_private ? 'private' : 'public',
            '%uid' => $uid,
            '%visible' => isset($this->nidsVisible[$nid]) ? 'visible' : 'not visible',
            '%current_uid' => $this->webUser->id(),
            '%tid_is_private' => $tid_is_private ? 'private' : 'public',
          ]));
        }
      }
    }
  }

}