Rocket.Chat/app/ui-admin/client/users/adminInviteUser.js

import { Meteor } from 'meteor/meteor';
import { ReactiveVar } from 'meteor/reactive-var';
import { Template } from 'meteor/templating';
import _ from 'underscore';
import toastr from 'toastr';

import { hasAtLeastOnePermission } from '../../../authorization';
import { t, handleError } from '../../../utils';

Template.adminInviteUser.helpers({
	isAllowed() {
		return hasAtLeastOnePermission('bulk-register-user');
	},
	inviteEmails() {
		return Template.instance().inviteEmails.get();
	},
});

Template.adminInviteUser.events({
	'click .send'(e, instance) {
		const emails = $('#inviteEmails').val().split(/[\s,;]/);
		const rfcMailPattern = /^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/;
		const validEmails = _.compact(_.map(emails, function(email) {
			if (rfcMailPattern.test(email)) {
				return email;
			}
		}));
		if (validEmails.length) {
			Meteor.call('sendInvitationEmail', validEmails, function(error, result) {
				if (result) {
					instance.clearForm();
					instance.inviteEmails.set(validEmails);
				}
				if (error) {
					handleError(error);
				}
			});
		} else {
			toastr.error(t('Send_invitation_email_error'));
		}
	},
	'click .cancel'(e, instance) {
		instance.clearForm();
		instance.inviteEmails.set([]);
		Template.currentData().tabBar.close();
	},
});

Template.adminInviteUser.onCreated(function() {
	this.inviteEmails = new ReactiveVar([]);
	this.clearForm = function() {
		$('#inviteEmails').val('');
	};
});