class FilterDateTest

class FilterDateTest extends ViewTestBase {
    
    /**
     * Name of the field.
     *
     * Note, this is used in the default test view.
     *
     * @var string
     */
    protected $fieldName = 'field_date';
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Nodes to test.
     *
     * @var \Drupal\node\NodeInterface[]
     */
    protected $nodes = [];
    
    /**
     * Dates of test nodes in date storage format.
     *
     * @var string[]
     */
    protected $dates;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'datetime',
        'datetime_test',
        'node',
        'views_ui',
    ];
    
    /**
     * {@inheritdoc}
     */
    public static $testViews = [
        'test_filter_datetime',
    ];
    
    /**
     * {@inheritdoc}
     *
     * Create nodes with relative dates of yesterday, today, and tomorrow.
     */
    protected function setUp($import_test_views = TRUE, $modules = [
        'views_test_config',
    ]) : void {
        parent::setUp($import_test_views, $modules);
        $now = \Drupal::time()->getRequestTime();
        $admin_user = $this->drupalCreateUser([
            'administer views',
        ]);
        $this->drupalLogin($admin_user);
        $this->drupalCreateContentType([
            'type' => 'page',
            'name' => 'Basic page',
        ]);
        // Add a date field to page nodes.
        $fieldStorage = FieldStorageConfig::create([
            'field_name' => $this->fieldName,
            'entity_type' => 'node',
            'type' => 'datetime',
            'settings' => [
                'datetime_type' => DateTimeItem::DATETIME_TYPE_DATETIME,
            ],
        ]);
        $fieldStorage->save();
        $field = FieldConfig::create([
            'field_storage' => $fieldStorage,
            'bundle' => 'page',
            'required' => TRUE,
        ]);
        $field->save();
        // Create some nodes.
        $this->dates = [
            // Tomorrow.
DrupalDateTime::createFromTimestamp($now + 86400, DateTimeItemInterface::STORAGE_TIMEZONE)->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT),
            // Today.
DrupalDateTime::createFromTimestamp($now, DateTimeItemInterface::STORAGE_TIMEZONE)->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT),
            // Yesterday.
DrupalDateTime::createFromTimestamp($now - 86400, DateTimeItemInterface::STORAGE_TIMEZONE)->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT),
        ];
        $this->nodes = [];
        foreach ($this->dates as $date) {
            $this->nodes[] = $this->drupalCreateNode([
                $this->fieldName => [
                    'value' => $date,
                ],
            ]);
        }
        // Add a node where the date field is empty.
        $this->nodes[] = $this->drupalCreateNode();
        // Views needs to be aware of the new field.
        $this->container
            ->get('views.views_data')
            ->clear();
        // Load test views.
        ViewTestData::createTestViews(static::class, [
            'datetime_test',
        ]);
    }
    
    /**
     * Tests exposed grouped filters.
     */
    public function testExposedGroupedFilters() : void {
        $filter_identifier = $this->fieldName . '_value';
        $this->drupalGet('admin/structure/views/nojs/handler/test_filter_datetime/default/filter/' . $filter_identifier);
        $this->submitForm([], 'Expose filter');
        $this->submitForm([], 'Grouped filters');
        // Create groups with different amount of expected values.
        $edit = [];
        // No values are required.
        $edit['options[group_info][group_items][1][title]'] = 'empty';
        $edit['options[group_info][group_items][1][operator]'] = 'empty';
        $edit['options[group_info][group_items][2][title]'] = 'not empty';
        $edit['options[group_info][group_items][2][operator]'] = 'not empty';
        // One value is required.
        $edit['options[group_info][group_items][3][title]'] = 'less than';
        $edit['options[group_info][group_items][3][operator]'] = '<';
        $edit['options[group_info][group_items][3][value][value]'] = $this->dates[0];
        // Two values are required (min and max).
        $this->submitForm($edit, 'Add another item');
        $edit['options[group_info][group_items][4][title]'] = 'between';
        $edit['options[group_info][group_items][4][operator]'] = 'between';
        $edit['options[group_info][group_items][4][value][type]'] = 'offset';
        $edit['options[group_info][group_items][4][value][min]'] = '-2 hours';
        $edit['options[group_info][group_items][4][value][max]'] = '+2 hours';
        $this->submitForm($edit, 'Apply');
        // Test that the exposed filter works as expected.
        $path = 'test_filter_datetime-path';
        $this->drupalGet('admin/structure/views/view/test_filter_datetime/edit');
        $this->submitForm([], 'Add Page');
        $this->drupalGet('admin/structure/views/nojs/display/test_filter_datetime/page_1/path');
        $this->submitForm([
            'path' => $path,
        ], 'Apply');
        $this->submitForm([], 'Save');
        $this->drupalGet($path);
        // Filter the Preview by 'empty'.
        $this->getSession()
            ->getPage()
            ->findField($filter_identifier)
            ->selectOption('1');
        $this->getSession()
            ->getPage()
            ->pressButton('Apply');
        $this->assertIds([
            4,
        ]);
        // Filter the Preview by 'not empty'.
        $this->getSession()
            ->getPage()
            ->findField($filter_identifier)
            ->selectOption('2');
        $this->getSession()
            ->getPage()
            ->pressButton('Apply');
        $this->assertIds([
            1,
            2,
            3,
        ]);
        // Filter the Preview by 'less than'.
        $this->getSession()
            ->getPage()
            ->findField($filter_identifier)
            ->selectOption('3');
        $this->getSession()
            ->getPage()
            ->pressButton('Apply');
        $this->assertIds([
            2,
            3,
        ]);
        // Filter the Preview by 'between'.
        $this->getSession()
            ->getPage()
            ->findField($filter_identifier)
            ->selectOption('4');
        $this->getSession()
            ->getPage()
            ->pressButton('Apply');
        $this->assertIds([
            2,
        ]);
        // Change the identifier for grouped exposed filter.
        $this->drupalGet('admin/structure/views/nojs/handler/test_filter_datetime/default/filter/' . $filter_identifier);
        $filter_identifier = 'date';
        $edit['options[group_info][identifier]'] = $filter_identifier;
        $this->submitForm($edit, 'Apply');
        $this->submitForm([], 'Save');
        // Filter results again using a new filter identifier.
        $this->drupalGet($path);
        $this->getSession()
            ->getPage()
            ->findField($filter_identifier)
            ->selectOption('2');
        $this->getSession()
            ->getPage()
            ->pressButton('Apply');
        $this->assertIds([
            1,
            2,
            3,
        ]);
    }
    
    /**
     * Ensures that a given list of items appear on the view result.
     *
     * @param array $expected_ids
     *   An array of IDs.
     */
    protected function assertIds(array $expected_ids = []) : void {
        // First verify the count.
        $elements = $this->cssSelect('.views-row .field-content');
        $this->assertCount(count($expected_ids), $elements);
        $actual_ids = [];
        foreach ($elements as $element) {
            $actual_ids[] = (int) $element->getText();
        }
        $this->assertEquals($expected_ids, $actual_ids);
    }
    
    /**
     * Tests exposed date filters with a pager.
     */
    public function testExposedFilterWithPager() : void {
        // Expose the empty and not empty operators in a grouped filter.
        $this->drupalGet('admin/structure/views/nojs/handler/test_filter_datetime/default/filter/' . $this->fieldName . '_value');
        $this->submitForm([], 'Expose filter');
        $edit = [];
        $edit['options[operator]'] = '>';
        $this->submitForm($edit, 'Apply');
        // Expose the view and set the pager to 2 items.
        $path = 'test_filter_datetime-path';
        $this->drupalGet('admin/structure/views/view/test_filter_datetime/edit');
        $this->submitForm([], 'Add Page');
        $this->drupalGet('admin/structure/views/nojs/display/test_filter_datetime/page_1/path');
        $this->submitForm([
            'path' => $path,
        ], 'Apply');
        $this->drupalGet('admin/structure/views/nojs/display/test_filter_datetime/default/pager_options');
        $this->submitForm([
            'pager_options[items_per_page]' => 2,
        ], 'Apply');
        $this->submitForm([], 'Save');
        // Assert the page without filters.
        $this->drupalGet($path);
        $results = $this->cssSelect('.views-row');
        $this->assertCount(2, $results);
        $this->assertSession()
            ->pageTextContains('Next');
        // Assert the page with filter in the future, one results without pager.
        $page = $this->getSession()
            ->getPage();
        $now = \Drupal::time()->getRequestTime();
        $page->fillField($this->fieldName . '_value', DrupalDateTime::createFromTimestamp($now + 1)->format('Y-m-d H:i:s'));
        $page->pressButton('Apply');
        $results = $this->cssSelect('.views-row');
        $this->assertCount(1, $results);
        $this->assertSession()
            ->pageTextNotContains('Next');
        // Assert the page with filter in the past, 3 results with pager.
        $page->fillField($this->fieldName . '_value', DrupalDateTime::createFromTimestamp($now - 1000000)->format('Y-m-d H:i:s'));
        $this->getSession()
            ->getPage()
            ->pressButton('Apply');
        $results = $this->cssSelect('.views-row');
        $this->assertCount(2, $results);
        $this->assertSession()
            ->pageTextContains('Next');
        $page->clickLink('2');
        $results = $this->cssSelect('.views-row');
        $this->assertCount(1, $results);
    }

}