RocketChat/Rocket.Chat

import { Meteor } from 'meteor/meteor';
import { Tracker } from 'meteor/tracker';

import { roomCoordinator } from '../../../../client/lib/rooms/roomCoordinator';
import { dispatchToastMessage } from '../../../../client/lib/toast';
import { callWithErrorHandling } from '../../../../client/lib/utils/callWithErrorHandling';
import { Messages } from '../../../models/client';
import { settings } from '../../../settings/client';
import { MessageAction } from '../../../ui-utils/client';
import { t } from '../../../utils/lib/i18n';

Meteor.startup(() => {
    Tracker.autorun(() => {
        if (!settings.get('Threads_enabled')) {
            return MessageAction.removeButton('follow-message');
        }
        MessageAction.addButton({
            id: 'follow-message',
            icon: 'bell',
            label: 'Follow_message',
            type: 'interaction',
            context: ['message', 'message-mobile', 'threads', 'federated', 'videoconf', 'videoconf-threads'],
            async action(_, { message }) {
                if (!message) {
                    return;
                }

                await callWithErrorHandling('followMessage', { mid: message._id }).then(() =>
                    dispatchToastMessage({
                        type: 'success',
                        message: t('You_followed_this_message'),
                    }),
                );
            },
            condition({ message: { _id, tmid, replies = [] }, room, user, context }) {
                if (tmid || context) {
                    const parentMessage = Messages.findOne({ _id: tmid || _id }, { fields: { replies: 1 } });
                    if (parentMessage) {
                        replies = parentMessage.replies || [];
                    }
                }
                const isLivechatRoom = roomCoordinator.isLivechatRoom(room.t);
                if (isLivechatRoom) {
                    return false;
                }
                return user?._id ? !replies.includes(user._id) : false;
            },
            order: 1,
            group: 'menu',
        });
    });
});