<?php

namespace Drupal\Tests\user\Functional;

use Drupal\Tests\BrowserTestBase;

/**
 * Tests that users can be assigned and unassigned roles.
 *
 * @group user
 */
class UserRolesAssignmentTest extends BrowserTestBase {

  protected function setUp() {
    parent::setUp();
    $admin_user = $this->drupalCreateUser(['administer permissions', 'administer users']);
    $this->drupalLogin($admin_user);
  }

  /**
   * Tests that a user can be assigned a role and that the role can be removed
   * again.
   */
  public function testAssignAndRemoveRole()  {
    $rid = $this->drupalCreateRole(['administer users']);
    $account = $this->drupalCreateUser();

    // Assign the role to the user.
    $this->drupalPostForm('user/' . $account->id() . '/edit', ["roles[$rid]" => $rid], t('Save'));
    $this->assertText(t('The changes have been saved.'));
    $this->assertFieldChecked('edit-roles-' . $rid, 'Role is assigned.');
    $this->userLoadAndCheckRoleAssigned($account, $rid);

    // Remove the role from the user.
    $this->drupalPostForm('user/' . $account->id() . '/edit', ["roles[$rid]" => FALSE], t('Save'));
    $this->assertText(t('The changes have been saved.'));
    $this->assertNoFieldChecked('edit-roles-' . $rid, 'Role is removed from user.');
    $this->userLoadAndCheckRoleAssigned($account, $rid, FALSE);
  }

  /**
   * Tests that when creating a user the role can be assigned. And that it can
   * be removed again.
   */
  public function testCreateUserWithRole() {
    $rid = $this->drupalCreateRole(['administer users']);
    // Create a new user and add the role at the same time.
    $edit = [
      'name' => $this->randomMachineName(),
      'mail' => $this->randomMachineName() . '@example.com',
      'pass[pass1]' => $pass = $this->randomString(),
      'pass[pass2]' => $pass,
      "roles[$rid]" => $rid,
    ];
    $this->drupalPostForm('admin/people/create', $edit, t('Create new account'));
    $this->assertText(t('Created a new user account for @name.', ['@name' => $edit['name']]));
    // Get the newly added user.
    $account = user_load_by_name($edit['name']);

    $this->drupalGet('user/' . $account->id() . '/edit');
    $this->assertFieldChecked('edit-roles-' . $rid, 'Role is assigned.');
    $this->userLoadAndCheckRoleAssigned($account, $rid);

    // Remove the role again.
    $this->drupalPostForm('user/' . $account->id() . '/edit', ["roles[$rid]" => FALSE], t('Save'));
    $this->assertText(t('The changes have been saved.'));
    $this->assertNoFieldChecked('edit-roles-' . $rid, 'Role is removed from user.');
    $this->userLoadAndCheckRoleAssigned($account, $rid, FALSE);
  }

  /**
   * Check role on user object.
   *
   * @param object $account
   *   The user account to check.
   * @param string $rid
   *   The role ID to search for.
   * @param bool $is_assigned
   *   (optional) Whether to assert that $rid exists (TRUE) or not (FALSE).
   *   Defaults to TRUE.
   */
  private function userLoadAndCheckRoleAssigned($account, $rid, $is_assigned = TRUE) {
    $user_storage = $this->container->get('entity.manager')->getStorage('user');
    $user_storage->resetCache([$account->id()]);
    $account = $user_storage->load($account->id());
    if ($is_assigned) {
      $this->assertFalse(array_search($rid, $account->getRoles()) === FALSE, 'The role is present in the user object.');
    }
    else {
      $this->assertTrue(array_search($rid, $account->getRoles()) === FALSE, 'The role is not present in the user object.');
    }
  }

}