class ViewsTokensHooks

class ViewsTokensHooks {
    
    /**
     * Implements hook_token_info().
     */
    public function tokenInfo() {
        $info['types']['view'] = [
            'name' => t('View', [], [
                'context' => 'View entity type',
            ]),
            'description' => t('Tokens related to views.'),
            'needs-data' => 'view',
        ];
        $info['tokens']['view']['label'] = [
            'name' => t('Label'),
            'description' => t('The label of the view.'),
        ];
        $info['tokens']['view']['description'] = [
            'name' => t('Description'),
            'description' => t('The description of the view.'),
        ];
        $info['tokens']['view']['id'] = [
            'name' => t('ID'),
            'description' => t('The machine-readable ID of the view.'),
        ];
        $info['tokens']['view']['title'] = [
            'name' => t('Title'),
            'description' => t('The title of current display of the view.'),
        ];
        $info['tokens']['view']['url'] = [
            'name' => t('URL'),
            'description' => t('The URL of the view.'),
            'type' => 'url',
        ];
        $info['tokens']['view']['base-table'] = [
            'name' => t('Base table'),
            'description' => t('The base table used for this view.'),
        ];
        $info['tokens']['view']['base-field'] = [
            'name' => t('Base field'),
            'description' => t('The base field used for this view.'),
        ];
        $info['tokens']['view']['total-rows'] = [
            'name' => t('Total rows'),
            'description' => t('The total amount of results returned from the view. The current display will be used.'),
        ];
        $info['tokens']['view']['items-per-page'] = [
            'name' => t('Items per page'),
            'description' => t('The number of items per page.'),
        ];
        $info['tokens']['view']['current-page'] = [
            'name' => t('Current page'),
            'description' => t('The current page of results the view is on.'),
        ];
        $info['tokens']['view']['page-count'] = [
            'name' => t('Page count'),
            'description' => t('The total page count.'),
        ];
        return $info;
    }
    
    /**
     * Implements hook_tokens().
     */
    public function tokens($type, $tokens, array $data, array $options, BubbleableMetadata $bubbleable_metadata) {
        $url_options = [
            'absolute' => TRUE,
        ];
        if (isset($options['language'])) {
            $url_options['language'] = $options['language'];
        }
        $replacements = [];
        if ($type == 'view' && !empty($data['view'])) {
            
            /** @var \Drupal\views\ViewExecutable $view */
            $view = $data['view'];
            $bubbleable_metadata->addCacheableDependency($view->storage);
            foreach ($tokens as $name => $original) {
                switch ($name) {
                    case 'label':
                        $replacements[$original] = $view->storage
                            ->label();
                        break;
                    case 'description':
                        $replacements[$original] = $view->storage
                            ->get('description');
                        break;
                    case 'id':
                        $replacements[$original] = $view->storage
                            ->id();
                        break;
                    case 'title':
                        $title = $view->getTitle();
                        $replacements[$original] = $title;
                        break;
                    case 'url':
                        try {
                            if ($url = $view->getUrl()) {
                                $replacements[$original] = $url->setOptions($url_options)
                                    ->toString();
                            }
                        } catch (\InvalidArgumentException) {
                            // The view has no URL so we leave the value empty.
                            $replacements[$original] = '';
                        }
                        break;
                    case 'base-table':
                        $replacements[$original] = $view->storage
                            ->get('base_table');
                        break;
                    case 'base-field':
                        $replacements[$original] = $view->storage
                            ->get('base_field');
                        break;
                    case 'total-rows':
                        $replacements[$original] = (int) $view->total_rows;
                        break;
                    case 'items-per-page':
                        $replacements[$original] = (int) $view->getItemsPerPage();
                        break;
                    case 'current-page':
                        $replacements[$original] = (int) $view->getCurrentPage() + 1;
                        break;
                    case 'page-count':
                        // If there are no items per page, set this to 1 for the division.
                        $per_page = $view->getItemsPerPage() ?: 1;
                        $replacements[$original] = max(1, (int) ceil($view->total_rows / $per_page));
                        break;
                }
            }
        }
        return $replacements;
    }

}