const expandBtn = document.getElementById('expandNavbarBtn');
const sidebarElem = document.getElementById('sidebar');

if (localStorage.getItem('navbar') === 'hidden' || window.innerWidth <= 610) {
	expandBtn.src = '/img/layout-navbar-expand.svg';
	sidebarElem.classList.add('sidebar-hidden');
}

expandBtn.onclick = function() {
	sidebarElem.classList.toggle('sidebar-hidden');

	if (!sidebarElem.classList.contains('sidebar-hidden')) {
		expandBtn.src = '/img/layout-navbar-collapse.svg';
		if (window.innerWidth > 610) localStorage.setItem('navbar', 'norm');
	}
	else {
		expandBtn.src = '/img/layout-navbar-expand.svg';
		if (window.innerWidth > 610) localStorage.setItem('navbar', 'hidden');
	}
}