File widgets/calendar/calendar.php

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<?php

namespace SIW\Widgets;

use SIW\HTML;

/**
 * Widget met agenda
 *
 * @copyright 2019 SIW Internationale Vrijwilligersprojecten
 * @since     3.0.0
 * 
 * @widget_data 
 * Widget Name: SIW: Agenda
 * Description: Toont eerstvolgende evenementen
 * Author: SIW Internationale Vrijwilligersprojecten
 * Author URI: https://www.siw.nl
 */
class Calendar extends Widget {

    /**
     * {@inheritDoc}
     */
    protected $widget_id ='calendar';

    /**
     * {@inheritDoc}
     */
    protected $widget_dashicon = 'calendar';

    /**
     * {@inheritDoc}
     */
    protected function set_widget_properties() {
        $this->widget_name = __( 'Agenda', 'siw');
        $this->widget_description = __( 'Toont eerstvolgende evenementen', 'siw' );
    }

    /**
     * {@inheritDoc}
     */
    public function get_widget_form() {

        $widget_form = [
            'title' => [
                'type'    => 'text',
                'label'   => __( 'Titel', 'siw'),
                'default' => __( 'Agenda', 'siw' ),
            ],
        ];
        return $widget_form;
    }

    /**
     * {@inheritDoc}
     */
    public function get_content( array $instance, array $args, array $template_vars, string $css_name ) {

        $events = $this->get_upcoming_events();

        if ( empty( $events ) ) {
            $content = '<p>' . esc_html__( 'Er zijn momenteel geen geplande activiteiten.', 'siw' ) . '</p>';
            return $content;
        }
        foreach ( $events as $event ) {
            ob_start();
            ?>
            <h5 class="title">
                <?= HTML::generate_link( $event['permalink'], $event['title'], [ 'class' => 'link' ] ) ?>
            </h5>
            <span class="duration" >
                <?= esc_html( $event['date_range'] );?> <br/>
                <?= esc_html( $event['start_time'] . '&nbsp;-&nbsp;' . $event['end_time'] );?><br/>
            </span>
            <span class="location">
                <?= esc_html( $event['location'] . ',&nbsp;' . $event['city'] );?>
            </span>
            <?php
            $event_list[] = ob_get_clean();
            $json_ld[] = $event['json_ld'];
        }
        $content = HTML::generate_list( $event_list );
        $content .= implode( SPACE, $json_ld );
        $content .= '<p class="page-link">' . HTML::generate_link( get_page_link( siw_get_option( 'events_archive_page' ) ), __( 'Bekijk de volledige agenda.', 'siw' ) ) . '</p>';

        return $content;
    }

    /**
     * Haalt toekomstige evenementen op
     * 
     * @return array
     */
    protected function get_upcoming_events() {
        $events = get_transient( 'siw_upcoming_events' );
        if ( false === $events ) {
            $events = siw_get_upcoming_events( 2 );
            set_transient( 'siw_upcoming_events', $events, HOUR_IN_SECONDS );
        }
        return $events;
    }
}

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