RocketChat/Rocket.Chat

import type { IMessage } from '@rocket.chat/core-typings';

import { emoji } from '../../../../app/emoji/client';
import { callWithErrorHandling } from '../../utils/callWithErrorHandling';
import type { ChatAPI } from '../ChatAPI';

export const processSetReaction = async (chat: ChatAPI, { msg }: Pick<IMessage, 'msg'>): Promise<boolean> => {
    const match = msg.trim().match(/^\+(:.*?:)$/m);
    if (!match) {
        return false;
    }

    const [, reaction] = match;
    if (!emoji.list[reaction]) {
        return false;
    }

    const lastMessage = await chat.data.findLastMessage();

    if (!lastMessage) {
        return false;
    }

    await callWithErrorHandling('setReaction', reaction, lastMessage._id);
    return true;
};