55 lines
1.4 KiB
JavaScript
55 lines
1.4 KiB
JavaScript
document.addEventListener("DOMContentLoaded", function(event) {
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updateClock();
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setInterval(updateClock, 1000);
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});
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function getNextOpen(now) {
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var days = [[0, 14], [4, 18], [8, 22], [12], [2, 16], [6, 20], [10]]
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var nowday = now.getUTCDay();
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var nour = now.getUTCHours();
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var open_hour = -1;
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var d = 0;
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while (open_hour == -1) {
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var times = days[(nowday + d) % 7];
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for (var i = 0; i < times.length; ++i) {
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var time = times[i];
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if (time == nour) {
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return "refresh";
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} else if (time > nour || d > 0) {
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open_hour = time;
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break;
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}
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}
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if (open_hour == -1) {
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d += 1;
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nour = -1;
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}
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}
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var open = new Date(Date.UTC(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate() + d));
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var ts = open.setUTCHours(open_hour);
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return open;
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}
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function updateClock() {
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var clock = document.querySelector(".closed-registrations-message .clock");
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var now = new Date();
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var open = getNextOpen(now);
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if (open == "refresh") {
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location.reload();
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return;
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}
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var until = open - now;
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var ms = until % 1000;
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var s = Math.floor((until / 1000)) % 60;
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var m = Math.floor((until / 1000 / 60)) % 60;
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var h = Math.floor((until / 1000 / 60 / 60));
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if (m < 10) m = "0" + m;
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if (s < 10) s = "0" + s;
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clock.innerHTML = h + ":" + m + ":" + s;
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}
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