213 lines
8.5 KiB
JavaScript
213 lines
8.5 KiB
JavaScript
const app = document.querySelector("#admin-app");
|
|
|
|
let quizzes = [];
|
|
let sessions = [];
|
|
let activeSid = null;
|
|
let ws = null;
|
|
let leaderboard = [];
|
|
let roster = [];
|
|
let liveHistogram = null;
|
|
let currentState = null;
|
|
|
|
const samplePool = {
|
|
title: "Week 9 Recap: Computer Organization",
|
|
score_fn: "linear_decay",
|
|
time_limit_default: 60,
|
|
questions: [
|
|
{id: "q1", text: "Which unit sequences control signals in a multi-cycle datapath?", options: {A: "ALU", B: "Control unit", C: "Register file", D: "Instruction memory"}, correct: "B"}
|
|
]
|
|
};
|
|
|
|
function escapeText(value) {
|
|
return String(value ?? "").replace(/[&<>"']/g, (char) => ({
|
|
"&": "&",
|
|
"<": "<",
|
|
">": ">",
|
|
'"': """,
|
|
"'": "'",
|
|
})[char]);
|
|
}
|
|
|
|
async function api(path, options = {}) {
|
|
const response = await fetch(path, {
|
|
credentials: "same-origin",
|
|
headers: {"Content-Type": "application/json", ...(options.headers || {})},
|
|
...options,
|
|
});
|
|
if (!response.ok) throw new Error(await response.text());
|
|
const contentType = response.headers.get("content-type") || "";
|
|
return contentType.includes("json") ? response.json() : response.text();
|
|
}
|
|
|
|
async function boot() {
|
|
try {
|
|
await refresh();
|
|
render();
|
|
} catch {
|
|
renderLogin();
|
|
}
|
|
}
|
|
|
|
function renderLogin(error = "") {
|
|
app.innerHTML = `<section class="shell"><div class="panel narrow">
|
|
<h1>Admin Login</h1>
|
|
<form id="login-form" class="stack">
|
|
<label>Password <input name="password" type="password" required></label>
|
|
${error ? `<p class="error">${escapeText(error)}</p>` : ""}
|
|
<button class="primary">Log in</button>
|
|
</form>
|
|
</div></section>`;
|
|
document.querySelector("#login-form").addEventListener("submit", async (event) => {
|
|
event.preventDefault();
|
|
const form = new FormData(event.currentTarget);
|
|
try {
|
|
await api("/admin/login", {method: "POST", body: JSON.stringify({password: form.get("password")})});
|
|
await refresh();
|
|
render();
|
|
} catch {
|
|
renderLogin("Login failed.");
|
|
}
|
|
});
|
|
}
|
|
|
|
async function refresh() {
|
|
quizzes = (await api("/admin/api/quizzes")).quizzes;
|
|
sessions = (await api("/admin/api/sessions")).sessions;
|
|
}
|
|
|
|
function render() {
|
|
app.innerHTML = `<section class="admin-layout">
|
|
<aside class="sidebar">
|
|
<h1>Quiz Admin</h1>
|
|
<button id="new-quiz" class="secondary">Add Pool</button>
|
|
<button id="new-session" class="primary" ${quizzes.length ? "" : "disabled"}>Create Session</button>
|
|
<h2>Quizzes</h2>
|
|
<div class="list">${quizzes.map((quiz) => `<button data-quiz="${quiz.id}">${escapeText(quiz.title)}</button>`).join("") || "<p>No quizzes yet.</p>"}</div>
|
|
<h2>Sessions</h2>
|
|
<div class="list">${sessions.map((session) => `<button data-session="${session.sid}">${session.sid} ${escapeText(session.state)}</button>`).join("") || "<p>No sessions yet.</p>"}</div>
|
|
</aside>
|
|
<main class="workspace">${renderSession()}</main>
|
|
</section>`;
|
|
document.querySelector("#new-quiz").addEventListener("click", renderQuizModal);
|
|
document.querySelector("#new-session").addEventListener("click", renderSessionModal);
|
|
document.querySelectorAll("[data-session]").forEach((button) => {
|
|
button.addEventListener("click", () => connectSession(button.dataset.session));
|
|
});
|
|
bindControls();
|
|
}
|
|
|
|
function renderSession() {
|
|
if (!activeSid) return `<div class="panel"><h1>No active session</h1><p>Create or select a session.</p></div>`;
|
|
const session = sessions.find((item) => item.sid === activeSid);
|
|
return `<div class="panel">
|
|
<div class="topline"><h1>${escapeText(session?.title || activeSid)}</h1><span>${escapeText(currentState?.state || session?.state || "")}</span></div>
|
|
<p>Session ID: <strong>${activeSid}</strong></p>
|
|
<div class="toolbar">
|
|
<button data-command="open_question" class="primary">Open</button>
|
|
<button data-command="close_question">Close & Reveal</button>
|
|
<button data-command="next">Next</button>
|
|
<button data-command="end_session" class="danger">End</button>
|
|
<a class="button" href="/admin/api/sessions/${activeSid}/csv">Download CSV</a>
|
|
</div>
|
|
<label>Question index <input id="question-idx" type="number" min="0" value="${currentState?.current_question_idx ?? 0}"></label>
|
|
<label>Time limit <input id="time-limit" type="number" min="1" value="60"></label>
|
|
<h2>Roster (${roster.length})</h2>
|
|
<div class="roster">${roster.map((p) => `<span>${escapeText(p.student_id)} ${escapeText(p.name)}</span>`).join("") || "No students yet."}</div>
|
|
<h2>Live Histogram</h2>
|
|
${renderHistogram(liveHistogram?.histogram)}
|
|
<h2>Leaderboard</h2>
|
|
${renderLeaderboard(leaderboard)}
|
|
</div>`;
|
|
}
|
|
|
|
function renderHistogram(histogram) {
|
|
const data = histogram || {A: 0, B: 0, C: 0, D: 0, missed: 0, pending: 0};
|
|
return `<div class="histogram">${Object.entries(data).map(([key, value]) => (
|
|
`<div class="hist-row"><span>${key}</span><meter min="0" max="50" value="${value}"></meter><b>${value}</b></div>`
|
|
)).join("")}</div>`;
|
|
}
|
|
|
|
function renderLeaderboard(rows) {
|
|
return `<ol class="leaderboard">${(rows || []).map((row) => (
|
|
`<li><span>${row.rank}. ${escapeText(row.name)} ${row.student_id ? `(${escapeText(row.student_id)})` : ""}</span><strong>${row.score}</strong></li>`
|
|
)).join("") || "<li>No scores yet.</li>"}</ol>`;
|
|
}
|
|
|
|
function bindControls() {
|
|
document.querySelectorAll("[data-command]").forEach((button) => {
|
|
button.addEventListener("click", () => {
|
|
if (!ws || ws.readyState !== WebSocket.OPEN) return;
|
|
const command = button.dataset.command;
|
|
if (command === "open_question") {
|
|
ws.send(JSON.stringify({
|
|
type: command,
|
|
question_idx: Number(document.querySelector("#question-idx").value || 0),
|
|
time_limit: Number(document.querySelector("#time-limit").value || 60),
|
|
}));
|
|
} else {
|
|
ws.send(JSON.stringify({type: command}));
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
function renderQuizModal() {
|
|
app.innerHTML = `<section class="shell"><div class="panel">
|
|
<h1>Add Pool</h1>
|
|
<form id="quiz-form" class="stack">
|
|
<label>Pool JSON <textarea name="pool" rows="18">${escapeText(JSON.stringify(samplePool, null, 2))}</textarea></label>
|
|
<button class="primary">Create Quiz</button>
|
|
<button type="button" id="cancel">Cancel</button>
|
|
</form>
|
|
</div></section>`;
|
|
document.querySelector("#cancel").addEventListener("click", render);
|
|
document.querySelector("#quiz-form").addEventListener("submit", async (event) => {
|
|
event.preventDefault();
|
|
const pool = JSON.parse(new FormData(event.currentTarget).get("pool"));
|
|
await api("/admin/api/quizzes", {method: "POST", body: JSON.stringify({pool_json: pool})});
|
|
await refresh();
|
|
render();
|
|
});
|
|
}
|
|
|
|
async function renderSessionModal() {
|
|
const options = quizzes.map((quiz) => `<option value="${quiz.id}">${escapeText(quiz.title)}</option>`).join("");
|
|
app.innerHTML = `<section class="shell"><div class="panel narrow">
|
|
<h1>Create Session</h1>
|
|
<form id="session-form" class="stack">
|
|
<label>Quiz <select name="quiz_id">${options}</select></label>
|
|
<button class="primary">Create</button>
|
|
<button type="button" id="cancel">Cancel</button>
|
|
</form>
|
|
<div id="session-result"></div>
|
|
</div></section>`;
|
|
document.querySelector("#cancel").addEventListener("click", render);
|
|
document.querySelector("#session-form").addEventListener("submit", async (event) => {
|
|
event.preventDefault();
|
|
const quizId = Number(new FormData(event.currentTarget).get("quiz_id"));
|
|
const result = await api("/admin/api/sessions", {method: "POST", body: JSON.stringify({quiz_id: quizId})});
|
|
document.querySelector("#session-result").innerHTML = `<h2>${result.sid}</h2><p><a href="${result.join_url}">${result.join_url}</a></p><img class="qr" src="${result.qr_url}" alt="QR code">`;
|
|
await refresh();
|
|
connectSession(result.sid);
|
|
});
|
|
}
|
|
|
|
function connectSession(sid) {
|
|
activeSid = sid;
|
|
if (ws) ws.close();
|
|
const protocol = window.location.protocol === "https:" ? "wss" : "ws";
|
|
ws = new WebSocket(`${protocol}://${window.location.host}/ws/instructor/${sid}`);
|
|
ws.addEventListener("message", (event) => {
|
|
const message = JSON.parse(event.data);
|
|
if (message.type === "state") currentState = message;
|
|
if (message.type === "lobby_update") roster = message.participants;
|
|
if (message.type === "live_histogram") liveHistogram = message;
|
|
if (message.type === "full_leaderboard") leaderboard = message.leaderboard;
|
|
if (message.type === "question_closed") liveHistogram = {histogram: message.histogram};
|
|
render();
|
|
});
|
|
render();
|
|
}
|
|
|
|
boot();
|