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gnu-social-v2-archive-activ.../actions/apactorfollowing.php

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<?php
/**
* GNU social - a federating social network
*
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* ActivityPubPlugin implementation for GNU Social
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*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Plugin
* @package GNUsocial
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @author Daniel Supernault <danielsupernault@gmail.com>
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* @copyright 2018 Free Software Foundation http://fsf.org
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link https://www.gnu.org/software/social/
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*/
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if (!defined ('GNUSOCIAL')) {
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exit (1);
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}
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/**
* @category Plugin
* @package GNUsocial
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://www.gnu.org/software/social/
*/
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class apActorFollowingAction extends ManagedAction
{
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protected $needLogin = false;
protected $canPost = true;
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/**
* Handle the Following Collection request
*
* @return void
*/
protected function handle ()
{
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$nickname = $this->trimmed ('nickname');
try {
$user = User::getByNickname ($nickname);
$profile = $user->getProfile ();
$url = $profile->profileurl;
} catch (Exception $e) {
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ActivityPubReturn::error ('Invalid username.');
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}
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if (!isset ($_GET["page"])) {
$page = 1;
} else {
$page = intval ($this->trimmed ('page'));
}
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if ($page <= 0) {
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ActivityPubReturn::error ('Invalid page number.');
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}
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/* Fetch Following */
try {
$since = ($page - 1) * PROFILES_PER_MINILIST;
$limit = (($page - 1) == 0 ? 1 : $page) * PROFILES_PER_MINILIST;
$sub = $profile->getSubscribed ($since, $limit);
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} catch (NoResultException $e) {
ActivityPubReturn::error ('This user is not following anyone.');
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}
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/* Calculate total items */
$total_subs = $profile->subscriptionCount();
$total_pages = ceil ($total_subs / PROFILES_PER_MINILIST);
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if ($total_pages == 0) {
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ActivityPubReturn::error ('This user is not following anyone.');
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}
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if ($page > $total_pages) {
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ActivityPubReturn::error ("There are only {$total_pages} pages.");
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}
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/* Get followed' URLs */
$subs = array ();
while ($sub->fetch ()) {
$subs[] = $sub->profileurl;
}
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$res = [
'@context' => [
"https://www.w3.org/ns/activitystreams",
"https://w3id.org/security/v1",
],
'id' => "{$url}/following.json",
'type' => ($page == 0 ? 'OrderedCollection' : 'OrderedCollectionPage'),
'totalItems' => $total_subs,
'next' => $page+1 > $total_pages ? null : "{$url}/followers.json?page=".($page+1 == 1 ? 2 : $page+1),
'prev' => $page == 1 ? null : "{$url}/followers.json?page=".($page-1 <= 0 ? 1 : $page-1),
'orderedItems' => $subs
];
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ActivityPubReturn::answer ($res);
}
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}