60 lines
2.0 KiB
JavaScript
60 lines
2.0 KiB
JavaScript
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class UptimeCard extends HTMLElement {
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constructor() {
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super();
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this.source = null;
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}
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connectedCallback() {
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this.innerHTML = `
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<style>
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:host{display:block}section{height:100%;box-sizing:border-box}.liveValue{font-size:34px;font-weight:700;line-height:1.15;margin-top:10px}.state{display:inline-flex;align-items:center;gap:6px;margin-top:6px}.dot{width:9px;height:9px;border-radius:50%;background:#b3261e}.dot.on{background:#188038}
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</style>
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<section>
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<h3>Live uptime</h3>
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<div class="muted">Server-Sent Events</div>
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<div class="liveValue"><span id="seconds">--</span>s</div>
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<div class="muted state"><span id="dot" class="dot"></span><span id="state">Disconnected</span></div>
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</section>`;
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window.addEventListener('app:login', event => this.start(event.detail.token));
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window.addEventListener('beforeunload', () => this.stop());
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if (window.App && window.App.token()) this.start(window.App.token());
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}
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disconnectedCallback() {
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this.stop();
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}
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setState(text, connected) {
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this.querySelector('#state').textContent = text;
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this.querySelector('#dot').classList.toggle('on', !!connected);
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}
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start(token) {
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this.stop();
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if (!token || !window.EventSource) {
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this.setState('Unavailable', false);
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return;
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}
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this.setState('Connecting', false);
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this.source = new EventSource('/api/uptime/events?token=' + encodeURIComponent(token));
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this.source.addEventListener('open', () => this.setState('Connected', true));
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this.source.addEventListener('uptime', event => {
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try {
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const json = JSON.parse(event.data);
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this.querySelector('#seconds').textContent = json.uptimeSeconds;
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this.setState('Connected', true);
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} catch (error) {
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this.setState('Invalid event', false);
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}
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});
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this.source.addEventListener('error', () => this.setState('Reconnecting', false));
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}
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stop() {
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if (this.source) this.source.close();
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this.source = null;
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}
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}
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customElements.define('uptime-card', UptimeCard);
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