RocketChat/Rocket.Chat

import type { ILivechatDepartment } from '@rocket.chat/core-typings';
import { isOmnichannelRoom } from '@rocket.chat/core-typings';
import { LivechatDepartment, Users, Rooms } from '@rocket.chat/models';

import { callbacks } from '../../../../lib/callbacks';
import { i18n } from '../../../../server/lib/i18n';
import { sendMessage } from '../../../lib/server/functions/sendMessage';
import { settings } from '../../../settings/server';

callbacks.add(
    'livechat.offlineMessage',
    async (data) => {
        if (!settings.get('Livechat_OfflineMessageToChannel_enabled')) {
            return data;
        }

        let channelName = settings.get<string>('Livechat_OfflineMessageToChannel_channel_name');
        let departmentName;
        const { name, email, department, message: text, host } = data;
        if (department && department !== '') {
            const dept = await LivechatDepartment.findOneById<Pick<ILivechatDepartment, '_id' | 'name' | 'offlineMessageChannelName'>>(
                department,
                {
                    projection: { name: 1, offlineMessageChannelName: 1 },
                },
            );
            departmentName = dept?.name;
            if (dept?.offlineMessageChannelName) {
                channelName = dept.offlineMessageChannelName;
            }
        }

        if (!channelName || channelName === '') {
            return data;
        }

        const room = await Rooms.findOneByName(channelName, { projection: { t: 1, archived: 1 } });
        if (!room || room.archived || (isOmnichannelRoom(room) && room.closedAt)) {
            return data;
        }

        const user = await Users.findOneById('rocket.cat', { projection: { username: 1 } });
        if (!user) {
            return data;
        }

        const lng = settings.get<string>('Language') || 'en';

        let msg = `${i18n.t('New_Livechat_offline_message_has_been_sent', { lng })}: \n`;
        if (host && host !== '') {
            msg = msg.concat(`${i18n.t('Sent_from', { lng })}: ${host} \n`);
        }
        msg = msg.concat(`${i18n.t('Visitor_Name', { lng })}: ${name} \n`);
        msg = msg.concat(`${i18n.t('Visitor_Email', { lng })}: ${email} \n`);
        if (departmentName) {
            msg = msg.concat(`${i18n.t('Department', { lng })}: ${departmentName} \n`);
        }
        msg = msg.concat(`${i18n.t('Message', { lng })}: ${text} \n`);

        const message = {
            rid: room._id,
            msg,
            groupable: false,
        };

        await sendMessage(user, message, room, true);
    },
    callbacks.priority.MEDIUM,
    'livechat-send-email-offline-message-to-channel',
);