add bed cooler project.

data/www/components/add-card.js

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+class AddCard extends HTMLElement {
+  connectedCallback() {
+    this.innerHTML = `
+      <style>
+        :host{display:block}section{height:100%;box-sizing:border-box}.row{display:flex;gap:8px;align-items:end}.row>*{flex:1}
+      </style>
+      <section>
+        <h3>Add API</h3>
+        <div class="row">
+          <div><label>A</label><input id="a" type="number" value="1"></div>
+          <div><label>B</label><input id="b" type="number" value="2"></div>
+        </div>
+        <button id="add">Add</button>
+        <pre id="out"></pre>
+      </section>`;
+    this.querySelector('#add').addEventListener('click', () => this.addNums());
+  }
+
+  async addNums() {
+    const a = +this.querySelector('#a').value;
+    const b = +this.querySelector('#b').value;
+    this.querySelector('#out').textContent = await window.App.req('POST', '/api/add', {a, b});
+  }
+}
+
+customElements.define('add-card', AddCard);

data/www/components/led-card.js

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+class LedCard extends HTMLElement {
+  connectedCallback() {
+    this.innerHTML = `
+      <style>
+        :host{display:block}section{height:100%;box-sizing:border-box}.rangeRow{display:flex;gap:12px;align-items:center}.rangeRow input{flex:1}.rangeRow output{min-width:3ch;text-align:right;font-weight:650}
+      </style>
+      <section>
+        <h3>LED</h3>
+        <label>Brightness</label>
+        <div class="rangeRow"><input id="brightness" type="range" min="0" max="100" value="0"><output id="value">0</output></div>
+        <button id="apply">Apply</button>
+        <pre id="out"></pre>
+      </section>`;
+    this.brightness = this.querySelector('#brightness');
+    this.value = this.querySelector('#value');
+    this.brightness.addEventListener('input', () => this.value.value = this.brightness.value);
+    this.querySelector('#apply').addEventListener('click', () => this.setLed());
+    window.addEventListener('app:settings-loaded', event => this.applySettings(event.detail.settings));
+  }
+
+  applySettings(settings) {
+    if (!settings || settings.ledBrightness === undefined) return;
+    this.brightness.value = settings.ledBrightness;
+    this.value.value = settings.ledBrightness;
+  }
+
+  async setLed() {
+    this.querySelector('#out').textContent = await window.App.req('POST', '/api/led', {brightness: +this.brightness.value});
+  }
+}
+
+customElements.define('led-card', LedCard);

data/www/components/status-card.js

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+class StatusCard extends HTMLElement {
+  connectedCallback() {
+    this.innerHTML = `
+      <style>
+        :host{display:block}section{height:100%;box-sizing:border-box}button+button{margin-left:6px}
+      </style>
+      <section>
+        <h3>Status</h3>
+        <button id="ping">Ping</button>
+        <button id="me" class="secondary">Me</button>
+        <pre id="out"></pre>
+      </section>`;
+    this.querySelector('#ping').addEventListener('click', () => this.call('GET', '/api/ping'));
+    this.querySelector('#me').addEventListener('click', () => this.loadMe());
+  }
+
+  async call(method, url) {
+    this.querySelector('#out').textContent = await window.App.req(method, url);
+  }
+
+  async loadMe() {
+    await this.call('GET', '/api/me');
+  }
+}
+
+customElements.define('status-card', StatusCard);

data/www/components/uptime-card.js

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+class UptimeCard extends HTMLElement {
+  constructor() {
+    super();
+    this.source = null;
+  }
+
+  connectedCallback() {
+    this.innerHTML = `
+      <style>
+        :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}
+      </style>
+      <section>
+        <h3>Live temperature</h3>
+        <div class="muted">Server-Sent Events</div>
+        <div class="liveValue"><span id="temperature">--</span>&deg;C</div>
+        <div class="muted state"><span id="dot" class="dot"></span><span id="state">Disconnected</span></div>
+      </section>`;
+    window.addEventListener('app:login', event => this.start(event.detail.token));
+    window.addEventListener('beforeunload', () => this.stop());
+    if (window.App && window.App.token()) this.start(window.App.token());
+  }
+
+  disconnectedCallback() {
+    this.stop();
+  }
+
+  setState(text, connected) {
+    this.querySelector('#state').textContent = text;
+    this.querySelector('#dot').classList.toggle('on', !!connected);
+  }
+
+  start(token) {
+    this.stop();
+    if (!token || !window.EventSource) {
+      this.setState('Unavailable', false);
+      return;
+    }
+    this.setState('Connecting', false);
+    this.source = new EventSource('/api/uptime/events?token=' + encodeURIComponent(token));
+    this.source.addEventListener('open', () => this.setState('Connected', true));
+    this.source.addEventListener('temperature', event => {
+      try {
+        const json = JSON.parse(event.data);
+        const connected = !!json.sensorConnected && json.temperatureC !== null;
+        this.querySelector('#temperature').textContent = connected ? Number(json.temperatureC).toFixed(2) : '--';
+        this.setState(connected ? 'Connected' : 'Sensor unavailable', connected);
+      } catch (error) {
+        this.setState('Invalid event', false);
+      }
+    });
+    this.source.addEventListener('error', () => this.setState('Reconnecting', false));
+  }
+
+  stop() {
+    if (this.source) this.source.close();
+    this.source = null;
+  }
+}
+
+customElements.define('uptime-card', UptimeCard);