countdowngen/static/js/countdown.js
2025-08-12 22:28:56 -03:00

97 lines
3.1 KiB
JavaScript

(function() {
const $ = (sel) => document.querySelector(sel);
const qs = new URLSearchParams(location.search);
const targetISO = qs.get("target") || ($("#countdown")?.dataset.target || "");
const showMillis = (qs.get("millis") ?? ($("#countdown")?.dataset.showMillis || "0")) === "1";
const roundedUnit = qs.get("rounded_unit") || ($("#countdown")?.dataset.roundedUnit || "none");
const targetDate = targetISO ? new Date(targetISO) : null;
const targetText = $("#targetText");
const statusEl = $("#status");
const msWrap = $("#millisWrap");
// Reflect chosen colors into CSS variables if passed via query
const root = document.documentElement;
const setVar = (k, v) => { if (v) root.style.setProperty(k, v); };
setVar("--accent", qs.get("accent"));
setVar("--radius", (qs.get("radius") || "16") + "px");
setVar("--bg", qs.get("bg"));
setVar("--fg", qs.get("fg"));
const scheme = qs.get("scheme");
if (scheme) root.setAttribute("data-scheme", scheme);
const font = qs.get("font");
if (font) root.style.setProperty("--font", font.includes(" ") ? `"${font}"` : font);
if (!targetDate || isNaN(targetDate.valueOf())) {
statusEl.textContent = "Invalid or missing target date. Use the Edit link to set one.";
return;
}
targetText.textContent = targetDate.toString();
msWrap.hidden = !showMillis;
if (!showMillis && msWrap.parentNode) { msWrap.parentNode.removeChild(msWrap); }
function roundToUnit(ms, unit) {
if (unit === "none") return ms;
const map = {
minutes: 60_000,
hours: 3_600_000,
days: 86_400_000,
};
const size = map[unit] || 1;
return Math.round(ms / size) * size;
}
function tick() {
const now = new Date();
let diff = targetDate - now;
if (roundedUnit !== "none") {
diff = roundToUnit(diff, roundedUnit);
}
if (diff <= 0) {
$("#d").textContent = "0";
$("#h").textContent = "0";
$("#m").textContent = "0";
$("#s").textContent = "0";
if (showMillis) $("#ms").textContent = "000";
statusEl.textContent = "🎉 It's time!";
return;
}
const totalSeconds = Math.floor(diff / 1000);
const days = Math.floor(totalSeconds / (3600*24));
const hours = Math.floor((totalSeconds % (3600*24)) / 3600);
const minutes = Math.floor((totalSeconds % 3600) / 60);
const seconds = totalSeconds % 60;
const millis = diff % 1000;
$("#d").textContent = String(days);
$("#h").textContent = String(hours).padStart(2, "0");
$("#m").textContent = String(minutes).padStart(2, "0");
$("#s").textContent = String(seconds).padStart(2, "0");
if (showMillis) $("#ms").textContent = String(millis).padStart(3, "0");
requestAnimationFrame(tick);
}
// Shareable link
const copyBtn = $("#copyLink");
if (copyBtn) {
copyBtn.addEventListener("click", async () => {
try {
await navigator.clipboard.writeText(location.href);
copyBtn.textContent = "Link copied!";
setTimeout(() => copyBtn.textContent = "Copy sharable link", 1500);
} catch (e) {
alert("Copy failed: " + e);
}
});
}
// Start
requestAnimationFrame(tick);
})();