salix/back/methods/chat/send.js

const axios = require('axios');
module.exports = Self => {
    Self.remoteMethodCtx('send', {
        description: 'Send a RocketChat message',
        accessType: 'WRITE',
        accepts: [{
            arg: 'to',
            type: 'string',
            required: true,
            description: 'User (@) or channel (#) to send the message'
        }, {
            arg: 'message',
            type: 'string',
            required: true,
            description: 'The message'
        }],
        returns: {
            type: 'object',
            root: true
        },
        http: {
            path: `/send`,
            verb: 'POST'
        }
    });

    Self.send = async(ctx, to, message) => {
        const models = Self.app.models;
        const accessToken = ctx.req.accessToken;
        const sender = await models.Account.findById(accessToken.userId);
        const recipient = to.replace('@', '');

        if (sender.name != recipient) {
            await sendMessage(sender, to, message);
            
            return true;
        }

        return false;
    };

    async function sendMessage(sender, channel, message) {
        if (process.env.NODE_ENV !== 'production') {
            return new Promise(resolve => {
                return resolve({
                    statusCode: 200,
                    message: 'Fake notification sent'
                });
            });
        }

        const login = await Self.getServiceAuth();
        const avatar = `${login.host}/avatar/${sender.name}`;

        const options = {
            headers: {
                'X-Auth-Token': login.auth.token,
                'X-User-Id': login.auth.userId
            },
        };

        return axios.post(`${login.api}/chat.postMessage`, {
            'channel': channel,
            'avatar': avatar,
            'alias': sender.nickname,
            'text': message
        }, options);
    }
};