skynet-webportal/packages/website/stories/Header.js

import React from "react";
import PropTypes from "prop-types";

import { Button } from "./Button";
import "./header.css";

export const Header = ({ user, onLogin, onLogout, onCreateAccount }) => (
  <header>
    <div className="wrapper">
      <div>
        <svg width="32" height="32" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg">
          <g fill="none" fillRule="evenodd">
            <path d="M10 0h12a10 10 0 0110 10v12a10 10 0 01-10 10H10A10 10 0 010 22V10A10 10 0 0110 0z" fill="#FFF" />
            <path d="M5.3 10.6l10.4 6v11.1l-10.4-6v-11zm11.4-6.2l9.7 5.5-9.7 5.6V4.4z" fill="#555AB9" />
            <path d="M27.2 10.6v11.2l-10.5 6V16.5l10.5-6zM15.7 4.4v11L6 10l9.7-5.5z" fill="#91BAF8" />
          </g>
        </svg>
        <h1>Acme</h1>
      </div>
      <div>
        {user ? (
          <Button size="small" onClick={onLogout} label="Log out" />
        ) : (
          <>
            <Button size="small" onClick={onLogin} label="Log in" />
            <Button primary size="small" onClick={onCreateAccount} label="Sign up" />
          </>
        )}
      </div>
    </div>
  </header>
);

Header.propTypes = {
  user: PropTypes.shape({}),
  onLogin: PropTypes.func.isRequired,
  onLogout: PropTypes.func.isRequired,
  onCreateAccount: PropTypes.func.isRequired,
};

Header.defaultProps = {
  user: null,
};