O problema atual de, ao adicionar um usuário, procurar se ele existe na base de dados. Se não, criar um. Este usuário será administrador se estiver na whitelist de configuração em `config/<config>.json`. Após isso, procuraremos seus dados no id.org, com um cliente OpenId

users.model.js

// users-model.js - A mongoose model
//
// See http://mongoosejs.com/docs/models.html
// for more of what you can do here.
const uuid = require('uuid');
const { Issuer } = require('openid-client');

module.exports = function (app) {
    const mongooseClient = app.get('mongooseClient');
    let table = {
	telegramId: { type: String, required: true },
	isAdmin: { type: Boolean }
    }
    let users = new mongooseClient.Schema(table, {
	timestamps: true
    })

    let Users = mongooseClient.model('users', users);

    let whitelist = [
	app.get('authentication').telegram.username,
	...app.get('authentication').telegram.whitelist
    ]
    //  Pre-save some data
    users.pre('save', function(next) {
	let self = this
	Users.find({telegramId: self.telegramId}).then(function(users){
	    if(users.length > 0) {
		self.invalidate("telegramId", "telegramId must be unique")
		return new Error("telegramId must be unique")
	    }
	    else {
		self.isAdmin = false
		for (let i in whitelist) {
		    if (telegramId === whitelist[i]){
			self.isAdmin = true
			break;
		    }
		}
		return Issuer.discover('https://id.org.br')
	    }
	}).then(function (idIssuer) {
	    console.log('Discovered issuer %s', idIssuer);
	    return new idIssuer.Client({
		client_id: '<client_token>',
		client_secret: '<client_secret>'
	    })
	}).then(function(client){
	    return client.authorizationCallback('https://localhost:3000/authentication')
	}).then(function(tokenSet){
	    l// TODO here...
	    next()
	}).catch(next)
    })

    
    // Drop database and reset all data if you are in development mode
    if (process.env.NODE_ENV === 'development') {
	Users.find({}).remove()
	for (let i in whitelist) {
	    Users.create({
		telegramID: whitelist[i]
	    })
	}
    }
    
    return Users
};