addtocal-8.x-2.0-beta2/src/Plugin/Field/FieldFormatter/AddtocalGroupedView.php

<?php

namespace Drupal\addtocal\Plugin\Field\FieldFormatter;

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Field\FieldItemListInterface;
use Spatie\CalendarLinks\Generators\Google;
use Spatie\CalendarLinks\Generators\Ics;
use Spatie\CalendarLinks\Generators\WebOutlook;
use Spatie\CalendarLinks\Generators\WebOffice;
use Spatie\CalendarLinks\Generators\Yahoo;
use Spatie\CalendarLinks\Link;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\smart_date\Plugin\Field\FieldType\SmartDateItem;
use Drupal\Core\Datetime\DrupalDateTime;

/**
 * Add to Cal grouped view formatter.
 *
 * @FieldFormatter(
 *  id = "addtocal_grouped_view",
 *  label = @Translation("Add to Cal grouped button"),
 *  field_types = {
 *    "date",
 *    "datestamp",
 *    "datetime",
 *    "daterange",
 *    "date_recur",
 *    "smartdate",
 *  }
 * )
 */
class AddtocalGroupedView extends AddtocalView {

    /**
     * {@inheritdoc}
     */
    public function viewElements(FieldItemListInterface $items, $langcode) {
        $entity = $items->getEntity();
        $field = $this->fieldDefinition;

        $elements['#attached']['library'][] = 'addtocal/addtocal';
        $elements['#cache']['contexts'][] = 'timezone';
        $last_event_date_index = count($items) - 1;

        // Set first and last event date.
        /** @var \Drupal\Core\Datetime\DrupalDateTime $first_event_date */
        $first_event_date = $items->get(0) ?? NULL;
        /** @var \Drupal\Core\Datetime\DrupalDateTime $last_event_date */
        $last_event_date = $items->get($last_event_date_index) ?? NULL;

        if (!$first_event_date || !$last_event_date) {
            return;
        }

        if ($first_event_date instanceof SmartDateItem && $last_event_date instanceof SmartDateItem) {
            $timezone = empty($first_event_date->timezone) ? NULL : $first_event_date->timezone;
            $first_event_date = DrupalDateTime::createFromTimestamp($first_event_date->value, $timezone);
            $last_event_date = DrupalDateTime::createFromTimestamp($last_event_date->end_value, $timezone);
        }

        // Set timezone for first and last event date.
        $this->setTimeZone($first_event_date);
        $this->setTimeZone($last_event_date);

        // Continue to list all the dates added on the event.
        foreach ($items as $delta => $item) {
            $elements[$delta] = [];

            /** @var \Drupal\Core\Datetime\DrupalDateTime $start_date */
            $start_date = $item->start_date ?? $item->date ?? NULL;
            /** @var \Drupal\Core\Datetime\DrupalDateTime $end_date */
            $end_date = $item->end_date ?? $start_date;

            if ($item instanceof SmartDateItem) {
                $timezone = empty($item->timezone) ? NULL : $item->timezone;
                $start_date = DrupalDateTime::createFromTimestamp($item->value, $timezone);
                $end_date = DrupalDateTime::createFromTimestamp($item->end_value, $timezone);
            }

            if (!$start_date || !$end_date) {
                continue;
            }

            $this->setTimeZone($start_date);
            $this->setTimeZone($end_date);

            $is_start_date_before_end_date = $start_date->getPhpDateTime() < $end_date->getPhpDateTime();
            $is_now_before_start_date = new \DateTime('now') < $start_date->getPhpDateTime();

            $elements[$delta]['start_date']['#plain_text'] = $this->formatDate($start_date);

            if ($is_start_date_before_end_date) {
                $separator = $this->getSetting('separator');
                $elements[$delta]['separator']['#plain_text'] = $separator ? ' ' . $separator . ' ' : ' ';

                $elements[$delta]['end_date']['#plain_text'] = $this->formatDate($end_date);
            }

            $token_data = [
                $field->getTargetEntityTypeId() => $entity,
            ];

            $title = $this->token->replace($this->getSetting('event_title'), $token_data, ['clear' => TRUE]) ?: $entity->label();

            // For multiple date events setting a particular day as all day will not make a difference.
            // Use the start_date of the first day and the end_date of the last event day.
            $link = Link::create($title, $first_event_date->getPhpDateTime(), $last_event_date->getPhpDateTime());
            $link->address($this->token->replace($this->getSetting('location'), $token_data, ['clear' => TRUE]));
            $link->description($this->token->replace($this->getSetting('description'), $token_data, ['clear' => TRUE]));

            $element_id = 'addtocal-' . $entity->bundle() . '-' . $field->getName() . '-' . $entity->id() . '--' . $delta;

            $addtocal_access = $this->getSetting('past_events') ? TRUE : $is_now_before_start_date;

            $links = [
                '#theme' => 'addtocal_links',
                '#addtocal_link' => $link,
                '#id' => $element_id,
                '#attributes' => [],
                '#button_text' => $this->t('Add to Calendar'),
                '#button_attributes' => [
                    'aria-label' => $this->t('Open Add to Calendar menu'),
                ],
                '#menu_attributes' => [],
                '#items' => [
                    'google' => [
                        'title' => $this->t('Google'),
                        'aria-label' => $this->t('Add to Google Calendar'),
                        'generator' => new Google(),
                    ],
                    'yahoo' => [
                        'title' => $this->t('Yahoo!'),
                        'aria-label' => $this->t('Add to Yahoo Calendar'),
                        'generator' => new Yahoo(),
                    ],
                    'web_outlook' => [
                        'title' => $this->t('Outlook.com'),
                        'aria-label' => $this->t('Add to Outlook.com Calendar'),
                        'generator' => new WebOutlook(),
                    ],
                    'web_office' => [
                        'title' => $this->t('Office.com'),
                        'aria-label' => $this->t('Add to Office.com Calendar'),
                        'generator' => new WebOffice(),
                    ],
                    'ics' => [
                        'title' => $this->t('iCal / MS Outlook'),
                        'aria-label' => $this->t('Add to iCal / MS Outlook'),
                        'generator' => new Ics(),
                    ],
                ],
                '#access' => $addtocal_access,
            ];

            $context = [
                'items' => $items,
                'langcode' => $langcode,
                'delta' => $delta,
            ];
            $this->moduleHandler->alter('addtocal_links', $links, $context);

            $elements[$delta]['addtocal'] = $delta == $last_event_date_index ? $links : [];
        }

        return $elements;
    }

}