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<?php
if(!$config['activitypub']) exit('ActivityPub is disabled via config file.');
// get total amount
$statement = $db->prepare('SELECT COUNT(id) as total FROM followers WHERE follower_actor IS NOT NULL');
$statement->execute();
$followers_total = $statement->fetchAll(PDO::FETCH_ASSOC);
$followers_total = (!empty($followers_total)) ? $followers_total[0]['total'] : 0;
if(!isset($_GET['page'])):
$output = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => $config['url'].'/followers',
'type' => 'OrderedCollection',
'totalItems' => $followers_total,
'first' => $config['url'].'/followers?page=1',
];
header('Content-Type: application/ld+json');
echo(json_encode($output, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES));
else:
// get items
$items_per_page = 12; // mastodon default?
// pagination
$current_page = (isset($_GET['page']) && is_numeric($_GET['page'])) ? (int) $_GET['page'] : 1;
$total_pages = ceil($followers_total / $items_per_page);
$offset = ($current_page-1)*$items_per_page;
if($current_page < 1 || $current_page > $total_pages) {
http_response_code(404);
header('Content-Type: application/ld+json');
die('{}');
}
$statement = $db->prepare('SELECT follower_actor FROM followers WHERE follower_actor IS NOT NULL ORDER BY follower_added ASC LIMIT :limit OFFSET :page');
$statement->bindValue(':limit', $items_per_page, PDO::PARAM_INT);
$statement->bindValue(':page', $offset, PDO::PARAM_INT);
$statement->execute();
$followers = $statement->fetchAll(PDO::FETCH_ASSOC);
$ordered_items = [];
if(!empty($followers)) {
$ordered_items = array_column($followers, 'follower_actor');
}
$output = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => $config['url'].'/followers?page='.$current_page,
'type' => 'OrderedCollectionPage',
'totalItems' => $followers_total,
'partOf' => $config['url'].'/followers'
];
if($current_page > 1) {
$output['prev'] = $config['url'].'/followers?page='.($current_page-1);
}
if($current_page < $total_pages) {
$output['next'] = $config['url'].'/followers?page='.($current_page+1);
}
$output['orderedItems'] = $ordered_items;
header('Content-Type: application/ld+json');
echo(json_encode($output, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES));
endif;
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