Ticket #54111: 54111_v1.php

<?php
/*
 * Plugin Name: Testing #54111
 * Version: 1.0.0
 * Author: bgoewert
 * Author URI: https://profiles.wordpress.org/bgoewert/
 * Description: Plugin to test trac ticket <a href="https://core.trac.wordpress.org/ticket/54111">#54111</a>.
 */

// Permanently delete post when trashed
/* add_action('wp_trash_post', function ($post_id) {
    wp_delete_post($post_id, true);
}); */

// Hook to delete all attachments when a post is deleted
function delete_attachments($post_id)
{

    // Hook into the attachment files being deleted
    add_action('delete_attachment', function ($post_id, $post) {

        /* 
        This is the same method used to get the file path in `wp_delete_attachment()` and subsequently `wp_delete_attachment_files()`;

        https://core.trac.wordpress.org/browser/tags/6.4/src/wp-includes/post.php#L6287
        */
        $file = get_attached_file($post_id);

        error_log('Deleting attachment: ' . $file);
    }, 10, 2);

    // Get all attachments for the post
    $attachments = get_attached_media('', $post_id);

    foreach ($attachments as $attachment) {
        wp_delete_attachment($attachment->ID, true);
    }
}
add_action('before_delete_post', 'delete_attachments');

// List all attachments for a post in a metabox
function list_attachments_metabox($post)
{
    $attachments = get_attached_media('', $post->ID);
    $paths = [];

    // Get all image sizes
    $sizes = get_intermediate_image_sizes();

    // Get all the paths for the size variations of the image
    foreach ($attachments as $attachment) {
        $paths[$attachment->ID]['guid'] = $attachment->guid;
        foreach ($sizes as $size) {
            $paths[$attachment->ID][$size] = wp_get_attachment_image_src($attachment->ID, $size);
        }
    }

    // If there are no attachments
    if (empty($paths)) {
        echo '<p>No attachments found.</p>';
        return;
    }
?>
    <div class="attachments">
        <h3>Attachments</h3>
        <ul style="list-style:disc;padding-left:1em;">
            <?php foreach ($paths as $id => $a) : ?>
                <li>
                    <a href="<?= $a['guid'] ?>"><?= $id ?></a>
                    <ul style="list-style:circle;padding-left:2em;">
                        <?php foreach ($a as $size => $path) : ?>
                            <?php if (is_array($path)) : ?>
                                <li>
                                    <a href="<?= $path[0] ?>"><?= $size ?></a>
                                </li>
                            <?php endif; ?>
                        <?php endforeach; ?>
                    </ul>
                </li>
            <?php endforeach; ?>
        </ul>
    </div>
<?php
}
add_action('add_meta_boxes', function () {
    add_meta_box('list-attachments', 'Attachments', 'list_attachments_metabox', 'post', 'normal', 'high');
});