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<!doctype html>
<html lang="de">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width,initial-scale=1" />
<title>Countdown bis nächster F1 GP (OpenF1)</title>
<style>
body { font-family: system-ui, Arial, sans-serif; display:flex; align-items:center; justify-content:center; height:100vh; margin:0; background:#0b1220; color:#e6eef8; }
.card { background:#0f1724; padding:24px; border-radius:12px; box-shadow:0 6px 20px rgba(2,6,23,0.6); text-align:center; width:360px; }
h1 { margin:0 0 12px; font-size:18px; color:#fff; }
.race { font-weight:600; margin-bottom:8px; }
.time { font-size:28px; letter-spacing:0.6px; margin-bottom:10px; }
.note { font-size:13px; color:#9fb0d6; }
</style>
</head>
<body>
<div class="card">
<h1>Next Live Session</h1>
<div class="race" id="raceInfo">loading session info …</div>
<div class="time" id="countdown">--:--:--:--</div>
<div class="note" id="local">Local Time</div>
</div>
<script>
const API = 'https://api.openf1.org/v1';
function parseIso(s) {
if (!s) return null;
const d = new Date(s);
return isNaN(d) ? null : d;
}
// Hol alle Meetings (oder Sessions) vom API — wir verwenden /meetings?future=true wenn verfügbar,
// sonst fallback auf /sessions?meeting_key=latest und /meetings.
async function fetchAllUpcomingItems() {
// Versuche meetings?future=true (gibt typischerweise kommende Meetings)
const tryUrls = [
`${API}/meetings?future=true`,
`${API}/meetings`,
`${API}/sessions`
];
for (const url of tryUrls) {
try {
const res = await fetch(url);
if (!res.ok) continue;
const data = await res.json();
// data kann array oder object mit meetings/sessions
if (Array.isArray(data) && data.length) return data;
if (Array.isArray(data?.meetings) && data.meetings.length) return data.meetings;
if (Array.isArray(data?.sessions) && data.sessions.length) return data.sessions;
} catch (e) {
// next
}
}
throw new Error('no session data available');
}
// Extrahiere Zeitstempel aus Meeting/Session-Objekt
function getDateCandidates(item) {
const list = [];
if (item.date_start) list.push(parseIso(item.date_start));
if (item.date_end) list.push(parseIso(item.date_end));
if (item.date) list.push(parseIso(item.date));
if (item.sessions && Array.isArray(item.sessions)) {
for (const s of item.sessions) {
if (s.date_start) list.push(parseIso(s.date_start));
if (s.date) list.push(parseIso(s.date));
}
}
return list.filter(d => d instanceof Date && !isNaN(d));
}
// Wähle das nächste zukünftige Session-Objekt (oder Meeting) mit frühestem zukünftigen Datum
function pickNext(items) {
const now = new Date();
const candidates = [];
for (const it of items) {
// wenn session-Objekte in der Liste sind, prüfen wir session_name
if (it.session_name) {
const d = parseIso(it.date_start || it.date || it.date_time);
candidates.push({ item: it, date: d, type: 'session' });
} else if (it.meeting_key || it.meeting_name || it.sessions) {
// meetings: prüfen meeting date_start und alle sessions
const dates = getDateCandidates(it);
for (const d of dates) candidates.push({ item: it, date: d, type: 'meeting' });
// und wenn meeting enthält sessions, auch einzelne sessions als separate Kandidaten
if (Array.isArray(it.sessions)) {
for (const s of it.sessions) {
const sd = parseIso(s.date_start || s.date);
if (sd) candidates.push({ item: s, date: sd, parent: it, type: 'session' });
}
}
} else {
// generischer fallback: prüfen mögliche date*-Felder
const d = parseIso(it.date_start || it.date || it.date_time);
if (d) candidates.push({ item: it, date: d, type: 'unknown' });
}
}
// nur zukünftige
const future = candidates.filter(c => c.date && c.date > now);
if (future.length === 0) return null;
// Bevorzuge Einträge, deren item.session_name enthält 'Race'
const futureRaces = future.filter(c => c.item?.session_name && /race/i.test(c.item.session_name));
const listToSort = futureRaces.length ? futureRaces : future;
// Sortiere nach frühestem Datum
listToSort.sort((a,b) => a.date - b.date);
return listToSort[0];
}
function startCountdown(targetDate, onTick) {
let interval = null;
function update() {
const now = new Date();
let diff = targetDate - now;
if (diff < 0) diff = 0;
const days = Math.floor(diff / (1000*60*60*24));
const hours = Math.floor((diff%(1000*60*60*24)) / (1000*60*60));
const minutes = Math.floor((diff%(1000*60*60)) / (1000*60));
const seconds = Math.floor((diff%(1000*60)) / 1000);
onTick({ days, hours, minutes, seconds, remainingMs: diff });
if (diff === 0 && interval !== null) {
clearInterval(interval);
interval = null;
}
}
update();
interval = setInterval(update, 1000);
return () => { if (interval !== null) { clearInterval(interval); interval = null; } };
}
(async function init() {
const raceInfoEl = document.getElementById('raceInfo');
const countdownEl = document.getElementById('countdown');
const localEl = document.getElementById('local');
try {
const items = await fetchAllUpcomingItems();
const picked = pickNext(items);
if (!picked) throw new Error('Kein zukünftiges Rennen gefunden');
// picked.item kann Session oder Meeting; parent vorhanden wenn session aus meeting extrahiert wurde
const obj = picked.item;
const parent = picked.parent || null;
const date = picked.date;
if (!date) throw new Error('Kein Datum im ausgewählten Element');
// Bestimme Anzeige-Infos
const sessionName = obj.session_name || obj.name || obj.race_name || null;
const meetingName = (parent && (parent.meeting_name || parent.meeting_key)) || obj.meeting_name || obj.meeting_key || null;
const circuit = (parent && (parent.circuit_name || parent.location)) || obj.circuit_name || obj.location || '';
const country = (parent && (parent.country || parent.location_country)) || obj.country || obj.location_country || '';
const event = (parent && (parent.meeting_key || parent.meeting_name)) || obj.session || '';
const displayName = sessionName ? sessionName + (meetingName ? ' — ' + meetingName : '') : (meetingName || 'Next Session') + (Event ? ' — ' + Event : '') : (Event || 'Next Session');
raceInfoEl.textContent = `${displayName}${circuit ? ' — ' + circuit : ''}${country ? ' ('+country+')' : ''}`;
localEl.textContent = `Start (local time): ${date.toLocaleString(undefined, { dateStyle:'medium', timeStyle:'short' })}`;
startCountdown(date, ({days, hours, minutes, seconds, remainingMs}) => {
const dstr = days > 0 ? days + 'd ' : '';
countdownEl.textContent = `${dstr}${String(hours).padStart(2,'0')}:${String(minutes).padStart(2,'0')}:${String(seconds).padStart(2,'0')}`;
if (remainingMs === 0) countdownEl.textContent = 'Rennen begonnen!';
});
} catch (err) {
raceInfoEl.textContent = 'error loading';
countdownEl.textContent = '--:--:--:--';
console.error(err);
}
})();
</script>
</body>
</html>
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