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take-attendance.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="referrer" content="no-referrer" />
<title>Anokha 2024 | Take Attendance</title>
<link rel="stylesheet" href="styles/base.css" />
<link rel="stylesheet" href="styles/take-attendance.css" />
<script src="html5-qrcode.min.js"></script>
</head>
<body onload="init()">
<h1 id="page-title">Take Attendance</h1>
<p id="event-name"></p>
<div class="segmented-control">
<button
class="segmented-control-button"
id="entry-button"
onclick="toggleEntry()"
>
Entry
</button>
<button
class="segmented-control-button"
id="exit-button"
onclick="toggleEntry()"
>
Exit
</button>
</div>
<p id="mode"></p>
<div id="reader"></div>
</body>
<script type="text/javascript" src="./app.js"></script>
<script type="text/javascript">
const url = new URLSearchParams(window.location.search);
const wtf = url.get("wtf") ?? '1';
function extractStudentId(qrCodeText) {
if (qrCodeText.startsWith("anokha://")) {
return qrCodeText.substring(9);
}
return null;
}
var html5QrcodeScanner = new Html5QrcodeScanner("reader", {
fps: 10,
qrbox: 250,
});
function onScanSuccess(decodedText, decodedResult) {
console.log(`Scan result: ${decodedText}`);
html5QrcodeScanner.pause(true);
const studentId = extractStudentId(decodedText);
if (studentId === null) {
console.log(`Student ID: ${studentId}`);
alert("Invalid QR Code");
html5QrcodeScanner.resume();
return;
}
if (wtf.toString() === '0') {
const mode = document.querySelector("#mode").innerHTML;
const entry = mode === "Marking Entry";
// Call the API to mark Gate Entry/Exit
if (entry) {
markGateEntry(studentId).then(() => {
html5QrcodeScanner.resume();
});
} else {
markGateExit(studentId).then(() => {
html5QrcodeScanner.resume();
});
}
} else {
const eventId = getEventIdFromUrl();
const mode = document.querySelector("#mode").innerHTML;
const entry = mode === "Marking Entry";
// Call the API to mark attendance
if (entry) {
markEntry(eventId, studentId).then(() => {
html5QrcodeScanner.resume();
});
// console.log("Marking entry");
// setTimeout(() => {
// html5QrcodeScanner.resume();
// }, 2000);
} else {
markExit(eventId, studentId).then(() => {
this.html5QrcodeScanner.resume();
});
// console.log("Marking exit");
// setTimeout(() => {
// html5QrcodeScanner.resume();
// }, 2000);
}
}
}
html5QrcodeScanner.render(onScanSuccess);
</script>
</html>