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);
    }

}