Reaction.php

<?php
 
namespace Bitrix\Im\V2\Controller\Chat\Message;
 
use Bitrix\Im\V2\Controller\BaseController;
use Bitrix\Im\V2\Message;
use Bitrix\Im\V2\Message\Reaction\ReactionService;
use Bitrix\Im\V2\Rest\RestAdapter;
 
class Reaction extends BaseController
{
    public function addAction(Message $message, string $reaction): ?array
    {
        $reaction = mb_strtoupper($reaction);
        $service = new ReactionService($message);
        $reactResult = $service->addReaction($reaction);
 
        if (!$reactResult->isSuccess())
        {
            $this->addErrors($reactResult->getErrors());
 
            return null;
        }
 
        return [];
    }
 
    public function deleteAction(Message $message, string $reaction): ?array
    {
        $reaction = mb_strtoupper($reaction);
        $service = new ReactionService($message);
        $reactResult = $service->deleteReaction($reaction);
 
        if (!$reactResult->isSuccess())
        {
            $this->addErrors($reactResult->getErrors());
 
            return null;
        }
 
        return [];
    }
 
    public function tailAction(Message $message, array $filter = [], array $order = [], int $limit = 50): ?array
    {
        $reaction = $filter['reaction'] ?? null;
        if ($reaction !== null)
        {
            $reaction = mb_strtoupper($reaction);
            $validateResult = Message\Reaction\ReactionItem::validateReaction($reaction);
            if (!$validateResult->isSuccess())
            {
                $this->addErrors($validateResult->getErrors());
 
                return null;
            }
        }
 
        $reactionFilter = [
            'LAST_ID' => $filter['lastId'] ?? null,
            'MESSAGE_ID' => $message->getMessageId(),
            'REACTION' => $reaction,
        ];
        $reactionOrder = [
            'ID' => $order['id'] ?? 'DESC'
        ];
        $reactionLimit = $this->getLimit($limit);
 
        $reactions = Message\Reaction\ReactionCollection::find($reactionFilter, $reactionOrder, $reactionLimit);
 
        return (new RestAdapter($reactions))->toRestFormat();
    }
}