gnu-social/plugins/TreeNotes/TreeNotes.php

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<?php
declare(strict_types = 1);
// {{{ License
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social 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.
//
// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
// }}}
namespace Plugin\TreeNotes;
use App\Core\Event;
use App\Core\Modules\Plugin;
use App\Entity\Note;
use App\Util\Common;
use App\Util\Formatting;
use EventResult;
use Symfony\Component\HttpFoundation\Request;
class TreeNotes extends Plugin
{
/**
* Formatting notes without taking a direct reply out of context
* Show whole conversation in conversation related routes.
*/
public function onFormatNoteList(array $notes_in, array &$notes_out, Request $request): EventResult
{
if (str_starts_with($request->get('_route'), 'conversation')) {
$parents = $this->conversationFormat($notes_in);
$notes_out = $this->conversationFormatTree($parents, $notes_in);
} else {
$notes_out = $this->feedFormatTree($notes_in);
}
return Event::stop;
}
/**
* Formats general Feed view, allowing users to see a Note and its direct replies.
* These replies are then, shown independently of parent note, making sure that every single Note is shown at least
* once to users.
*
* The list is transversed in reverse to prevent any parent Note from being processed twice. At the same time,
* this allows all direct replies to be rendered inside the same, respective, parent Note.
* Moreover, this implies the Entity\Note::getReplies() query will only be performed once, for every Note.
*
* @param array $notes The Note list to be formatted, each element has two keys: 'note' (parent/current note),
* and 'replies' (array of notes in the same format)
*/
private function feedFormatTree(array $notes): array
{
$tree = [];
$notes = array_reverse($notes);
$max_replies_to_show = Common::config('plugin_tree_notes', 'feed_replies');
foreach ($notes as $note) {
if (!\is_null($children = $note->getReplies(limit: $max_replies_to_show))) {
$total_replies = $note->getRepliesCount();
$show_more = $total_replies > $max_replies_to_show;
$notes = array_filter($notes, fn (Note $n) => !\in_array($n, $children));
$tree[] = [
'note' => $note,
'replies' => array_map(
fn ($n) => [
'note' => $n,
'replies' => [], // We want only one depth level
'show_more' => ($n->getRepliesCount() > $max_replies_to_show),
'total_replies' => $n->getRepliesCount(),
],
$children,
),
'total_replies' => $total_replies,
'show_more' => $show_more,
];
} else {
$tree[] = ['note' => $note, 'replies' => [], 'show_more' => false];
}
}
return array_reverse($tree);
}
/**
* Filters given Note list off any children, returning only initial Notes of a Conversation.
*
* @param array $notes_in Notes to be filtered
*
* @return array All initial Conversation Notes in given list
*/
private function conversationFormat(array $notes_in): array
{
return array_filter($notes_in, static fn (Note $note) => \is_null($note->getReplyTo()));
}
private function conversationFormatTree(array $parents, array $notes): array
{
$subtree = [];
foreach ($parents as $p) {
$subtree[] = $this->conversationFormatSubTree($p, $notes);
}
return $subtree;
}
private function conversationFormatSubTree(Note $parent, array $notes)
{
$children = array_filter($notes, fn (Note $note) => $note->getReplyTo() === $parent->getId());
return [
'note' => $parent,
'replies' => $this->conversationFormatTree($children, $notes),
'show_more' => false, // It's always false, we're showing everyone
];
}
public function onAppendNoteBlock(Request $request, array $conversation, array &$res): EventResult
{
if (\array_key_exists('replies', $conversation)) {
$res[] = Formatting::twigRenderFile(
'tree_notes/note_replies_block.html.twig',
[
'nickname' => $conversation['note']->getActorNickname(),
'conversation' => $conversation,
],
);
}
return Event::next;
}
}