<!DOCTYPE html>
<html>
	<head>
		<title>FTracker</title>
		<meta name="theme-color" content="#c50e1f">
		<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
		<style>
			html, body {
				margin: 0;
				padding: 0;
				height: 100%;
				background: #ddd;
				font-family: sans-serif;
			}
			h1 {
				margin: 0;
				padding: 16px;
				text-transform: uppercase;
				color: #eee;
				background: #c50e1f;
				text-align: center;
			}
			form {
				padding: 16px;
				max-width: 512px;
				margin: auto;
			}
			input {
				border: none;
				padding: 16px;
				margin: 4px 0;
				font-size: 16px;
			}
			input[type=text] {
				color: #000;
				width: calc(100% - 32px);
			}
			input[type=submit] {
				background: #c50e1f;
				text-transform: uppercase;
				font-weight: bold;
				color: #fff;
				width: 100%;
				cursor: pointer;
			}
			.print {
				display: none;
				text-align: center;
			}
			.print * {
				display: inline-block;
				margin: 42px auto;
			}
			.print .link {
				font-size: 24px;
			}

			@media print {
				.print h1 {
					margin-top: 64px;
					color: #000;
				}
			}
		</style>
	</head>
	<body>
		<main id="formView">
			<h1>FTracker<br>Door Sign Genrator</h1>
			<form id="roomform">
				<label>
					Room Nr/Name:<br>
					<input type="text" name="room" id="room" placeholder="123" required>
				</label>
				<input type="submit" value="Print">
			</form>
		</main>
		<main id="printA" class="print">
			<h1 class="title"></h1><br>
			<div class="qr"></div><br>
			<span class="link"></span><br>
			<span>
				Made with FTracker<br>
				https://git.fasttube.de/FaSTTUBe/ftracker<br>
				&copy; 2020 Oskar / FaSTTUBe
			</span>
		</main>
		<main id="printD" class="print">
			<h1 class="title"></h1><br>
			<div class="qr"></div><br>
			<span class="link"></span><br>
			<span>
				Made with FTracker<br>
				https://git.fasttube.de/FaSTTUBe/ftracker<br>
				&copy; 2020 Oskar / FaSTTUBe
			</span>
		</main>
		<script src="/qrcodejs/qrcode.min.js"></script>
		<script>
			var fv = document.getElementById('formView')
			var pa = document.getElementById('printA')
			var pd = document.getElementById('printD')

			var rform = document.getElementById('roomform')
			rform.onsubmit = function(e) {

				e.preventDefault()

				var room = e.srcElement[0].value

				writePage(pa, room, 'arrival')
				writePage(pd, room, 'departure')

				printPage(pa, 'ftracker-arrival-'+room)
				printPage(pd, 'ftracker-departure-'+room)

			}

			function writePage(el, room, type) {

				var base = location.href.split('/').slice(0,3).join('/')

				var url = base + '/?' + type + '=' + room

				var title = el.querySelector('.title')
				var qr = el.querySelector('.qr')
				var link = el.querySelector('.link')

				title.innerHTML =
					'Scan here to log ' + type + '<br> in room ' + room
				link.innerHTML = url
				qr.innerHTML = ''
				new QRCode(qr, {
					text: url,
					width: 320,
					height: 320
				})

			}

			function printPage(el, name) {

				var t = document.title
				document.title = name

				fv.style.display = 'none'
				el.style.display = 'block'

				window.print()

				el.style.display = 'none'
				fv.style.display = 'block'

				document.title = t

			}
		</script>
	</body>
</html>