class SearchRankingTest

class SearchRankingTest extends BrowserTestBase {
    use CommentTestTrait;
    use CronRunTrait;
    
    /**
     * The node search page.
     *
     * @var \Drupal\search\SearchPageInterface
     */
    protected $nodeSearch;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'node',
        'search',
        'statistics',
        'comment',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    protected function setUp() {
        parent::setUp();
        $this->drupalCreateContentType([
            'type' => 'page',
            'name' => 'Basic page',
        ]);
        // Create a plugin instance.
        $this->nodeSearch = SearchPage::load('node_search');
        // Log in with sufficient privileges.
        $this->drupalLogin($this->drupalCreateUser([
            'post comments',
            'skip comment approval',
            'create page content',
            'administer search',
        ]));
    }
    public function testRankings() {
        // Add a comment field.
        $this->addDefaultCommentField('node', 'page');
        // Build a list of the rankings to test.
        $node_ranks = [
            'sticky',
            'promote',
            'relevance',
            'recent',
            'comments',
            'views',
        ];
        // Create nodes for testing.
        $nodes = [];
        foreach ($node_ranks as $node_rank) {
            $settings = [
                'type' => 'page',
                'comment' => [
                    [
                        'status' => CommentItemInterface::HIDDEN,
                    ],
                ],
                'title' => 'Drupal rocks',
                'body' => [
                    [
                        'value' => "Drupal's search rocks",
                    ],
                ],
                // Node is one day old.
'created' => REQUEST_TIME - 24 * 3600,
                'sticky' => 0,
                'promote' => 0,
            ];
            foreach ([
                0,
                1,
            ] as $num) {
                if ($num == 1) {
                    switch ($node_rank) {
                        case 'sticky':
                        case 'promote':
                            $settings[$node_rank] = 1;
                            break;
                        case 'relevance':
                            $settings['body'][0]['value'] .= " really rocks";
                            break;
                        case 'recent':
                            // Node is 1 hour hold.
                            $settings['created'] = REQUEST_TIME - 3600;
                            break;
                        case 'comments':
                            $settings['comment'][0]['status'] = CommentItemInterface::OPEN;
                            break;
                    }
                }
                $nodes[$node_rank][$num] = $this->drupalCreateNode($settings);
            }
        }
        // Add a comment to one of the nodes.
        $edit = [];
        $edit['subject[0][value]'] = 'my comment title';
        $edit['comment_body[0][value]'] = 'some random comment';
        $this->drupalGet('comment/reply/node/' . $nodes['comments'][1]->id() . '/comment');
        $this->drupalPostForm(NULL, $edit, t('Preview'));
        $this->drupalPostForm(NULL, $edit, t('Save'));
        // Enable counting of statistics.
        $this->config('statistics.settings')
            ->set('count_content_views', 1)
            ->save();
        // Simulating content views is kind of difficult in the test. Leave that
        // to the Statistics module. So instead go ahead and manually update the
        // counter for this node.
        $nid = $nodes['views'][1]->id();
        Database::getConnection()->insert('node_counter')
            ->fields([
            'totalcount' => 5,
            'daycount' => 5,
            'timestamp' => REQUEST_TIME,
            'nid' => $nid,
        ])
            ->execute();
        // Run cron to update the search index and comment/statistics totals.
        $this->cronRun();
        // Test that the settings form displays the content ranking section.
        $this->drupalGet('admin/config/search/pages/manage/node_search');
        $this->assertText(t('Content ranking'));
        // Check that all rankings are visible and set to 0.
        foreach ($node_ranks as $node_rank) {
            $this->assertNotEmpty($this->xpath('//select[@id="edit-rankings-' . $node_rank . '-value"]//option[@value="0"]'), 'Select list to prioritize ' . $node_rank . ' for node ranks is visible and set to 0.');
        }
        // Test each of the possible rankings.
        $edit = [];
        foreach ($node_ranks as $node_rank) {
            // Enable the ranking we are testing.
            $edit['rankings[' . $node_rank . '][value]'] = 10;
            $this->drupalPostForm('admin/config/search/pages/manage/node_search', $edit, t('Save search page'));
            $this->drupalGet('admin/config/search/pages/manage/node_search');
            $this->assertNotEmpty($this->xpath('//select[@id="edit-rankings-' . $node_rank . '-value"]//option[@value="10"]'), 'Select list to prioritize ' . $node_rank . ' for node ranks is visible and set to 10.');
            // Reload the plugin to get the up-to-date values.
            $this->nodeSearch = SearchPage::load('node_search');
            // Do the search and assert the results.
            $this->nodeSearch
                ->getPlugin()
                ->setSearch('rocks', [], []);
            $set = $this->nodeSearch
                ->getPlugin()
                ->execute();
            $this->assertEqual($set[0]['node']->id(), $nodes[$node_rank][1]->id(), 'Search ranking "' . $node_rank . '" order.');
            // Clear this ranking for the next test.
            $edit['rankings[' . $node_rank . '][value]'] = 0;
        }
        // Save the final node_rank change then check that all rankings are visible
        // and have been set back to 0.
        $this->drupalPostForm('admin/config/search/pages/manage/node_search', $edit, t('Save search page'));
        $this->drupalGet('admin/config/search/pages/manage/node_search');
        foreach ($node_ranks as $node_rank) {
            $this->assertNotEmpty($this->xpath('//select[@id="edit-rankings-' . $node_rank . '-value"]//option[@value="0"]'), 'Select list to prioritize ' . $node_rank . ' for node ranks is visible and set to 0.');
        }
        // Try with sticky, then promoted. This is a test for issue
        // https://www.drupal.org/node/771596.
        $node_ranks = [
            'sticky' => 10,
            'promote' => 1,
            'relevance' => 0,
            'recent' => 0,
            'comments' => 0,
            'views' => 0,
        ];
        $configuration = $this->nodeSearch
            ->getPlugin()
            ->getConfiguration();
        foreach ($node_ranks as $var => $value) {
            $configuration['rankings'][$var] = $value;
        }
        $this->nodeSearch
            ->getPlugin()
            ->setConfiguration($configuration);
        $this->nodeSearch
            ->save();
        // Do the search and assert the results. The sticky node should show up
        // first, then the promoted node, then all the rest.
        $this->nodeSearch
            ->getPlugin()
            ->setSearch('rocks', [], []);
        $set = $this->nodeSearch
            ->getPlugin()
            ->execute();
        $this->assertEqual($set[0]['node']->id(), $nodes['sticky'][1]->id(), 'Search ranking for sticky first worked.');
        $this->assertEqual($set[1]['node']->id(), $nodes['promote'][1]->id(), 'Search ranking for promoted second worked.');
        // Try with recent, then comments. This is a test for issues
        // https://www.drupal.org/node/771596 and
        // https://www.drupal.org/node/303574.
        $node_ranks = [
            'sticky' => 0,
            'promote' => 0,
            'relevance' => 0,
            'recent' => 10,
            'comments' => 1,
            'views' => 0,
        ];
        $configuration = $this->nodeSearch
            ->getPlugin()
            ->getConfiguration();
        foreach ($node_ranks as $var => $value) {
            $configuration['rankings'][$var] = $value;
        }
        $this->nodeSearch
            ->getPlugin()
            ->setConfiguration($configuration);
        $this->nodeSearch
            ->save();
        // Do the search and assert the results. The recent node should show up
        // first, then the commented node, then all the rest.
        $this->nodeSearch
            ->getPlugin()
            ->setSearch('rocks', [], []);
        $set = $this->nodeSearch
            ->getPlugin()
            ->execute();
        $this->assertEqual($set[0]['node']->id(), $nodes['recent'][1]->id(), 'Search ranking for recent first worked.');
        $this->assertEqual($set[1]['node']->id(), $nodes['comments'][1]->id(), 'Search ranking for comments second worked.');
    }
    
    /**
     * Test rankings of HTML tags.
     */
    public function testHTMLRankings() {
        $full_html_format = FilterFormat::create([
            'format' => 'full_html',
            'name' => 'Full HTML',
        ]);
        $full_html_format->save();
        // Test HTML tags with different weights.
        $sorted_tags = [
            'h1',
            'h2',
            'h3',
            'h4',
            'a',
            'h5',
            'h6',
            'notag',
        ];
        $shuffled_tags = $sorted_tags;
        // Shuffle tags to ensure HTML tags are ranked properly.
        shuffle($shuffled_tags);
        $settings = [
            'type' => 'page',
            'title' => 'Simple node',
        ];
        $nodes = [];
        foreach ($shuffled_tags as $tag) {
            switch ($tag) {
                case 'a':
                    $settings['body'] = [
                        [
                            'value' => Link::fromTextAndUrl('Drupal Rocks', Url::fromRoute('<front>'))->toString(),
                            'format' => 'full_html',
                        ],
                    ];
                    break;
                case 'notag':
                    $settings['body'] = [
                        [
                            'value' => 'Drupal Rocks',
                        ],
                    ];
                    break;
                default:
                    $settings['body'] = [
                        [
                            'value' => "<{$tag}>Drupal Rocks</{$tag}>",
                            'format' => 'full_html',
                        ],
                    ];
                    break;
            }
            $nodes[$tag] = $this->drupalCreateNode($settings);
        }
        // Update the search index.
        $this->nodeSearch
            ->getPlugin()
            ->updateIndex();
        $search_index = \Drupal::service('search.index');
        assert($search_index instanceof SearchIndexInterface);
        $this->nodeSearch
            ->getPlugin()
            ->setSearch('rocks', [], []);
        // Do the search and assert the results.
        $set = $this->nodeSearch
            ->getPlugin()
            ->execute();
        // Test the ranking of each tag.
        foreach ($sorted_tags as $tag_rank => $tag) {
            // Assert the results.
            if ($tag == 'notag') {
                $this->assertEqual($set[$tag_rank]['node']->id(), $nodes[$tag]->id(), 'Search tag ranking for plain text order.');
            }
            else {
                $this->assertEqual($set[$tag_rank]['node']->id(), $nodes[$tag]->id(), 'Search tag ranking for "&lt;' . $sorted_tags[$tag_rank] . '&gt;" order.');
            }
        }
        // Test tags with the same weight against the sorted tags.
        $unsorted_tags = [
            'u',
            'b',
            'i',
            'strong',
            'em',
        ];
        foreach ($unsorted_tags as $tag) {
            $settings['body'] = [
                [
                    'value' => "<{$tag}>Drupal Rocks</{$tag}>",
                    'format' => 'full_html',
                ],
            ];
            $node = $this->drupalCreateNode($settings);
            // Update the search index.
            $this->nodeSearch
                ->getPlugin()
                ->updateIndex();
            $this->nodeSearch
                ->getPlugin()
                ->setSearch('rocks', [], []);
            // Do the search and assert the results.
            $set = $this->nodeSearch
                ->getPlugin()
                ->execute();
            // Ranking should always be second to last.
            $set = array_slice($set, -2, 1);
            // Assert the results.
            $this->assertEqual($set[0]['node']->id(), $node->id(), 'Search tag ranking for "&lt;' . $tag . '&gt;" order.');
            // Delete node so it doesn't show up in subsequent search results.
            $node->delete();
        }
    }

}