File batch/delete-old-posts.php

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<?php

namespace SIW\Batch;

use SIW\Util;

/**
 * Batch job om oude posts te verwijderen
 * 
 * @copyright 2019 Internationale Vrijwilligersprojecten
 * @since     3.0.0
 */
class Delete_Old_Posts extends Job {

    /**
     * Maximale leeftijd van post in maanden
     * 
     * @var int
     */
    const MAX_AGE_POST = 12;

    /**
     * {@inheritDoc}
     */
    protected $action = 'delete_old_posts';

    /**
     * {@inheritDoc}
     */
    protected $name = 'verwijderen oude posts';

    /**
     * {@inheritDoc}
     */
    protected $category = 'algemeen';

    /**
     * Selecteer alle posts van de relevante post types
     *
     * @return array
     * 
     * @todo filter voor post_types toevoegen
     */
    protected function select_data() {
        $post_types = [
            'vacatures',
            'agenda',
        ];

        $data = get_posts(
            [
                'post_type'      => $post_types,
                'fields'         => 'ids',
                'posts_per_page' => -1,
            ]
        );
        return $data;
    }

    /**
     * Verwijderen van posts
     *
     * @param int $post_id
     *
     * @return mixed
     * 
     * @todo filter voor reference date
     */
    protected function task( $post_id ) {
        if ( ! Util::post_exists( $post_id ) ) {
            return false;
        }

        $limit = date( 'Y-m-d', time() - ( self::MAX_AGE_POST * MONTH_IN_SECONDS ) );

        $post_type = get_post_type( $post_id );
        switch ( $post_type ) {
            case 'vacatures':
                $reference_date = date( 'Y-m-d', get_post_meta( $post_id, 'siw_vacature_deadline', true ) );
                break;
            case 'agenda':
                $reference_date  = date( 'Y-m-d', get_post_meta( $post_id, 'siw_agenda_eind', true ) );
                break;
            default:
                return false;
        }

        if ( $reference_date < $limit ) {
            wp_delete_post( $post_id, true );
            $this->increment_processed_count();
        }

        return false;
    }
}

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