add log monitoring

javascript/logMonitor.js

@@ -0,0 +1,45 @@
+let logMonitorEl = null;
+
+async function logMonitor() {
+  setTimeout(logMonitor, opts.logmonitor_refresh_period);
+  if (logMonitorEl) logMonitorEl.parentElement.style.display = opts.logmonitor_show ? 'block' : 'none';
+  if (!opts.logmonitor_show) return;
+  const res = await fetch('/sdapi/v1/log?clear=True');
+  if (res?.ok) {
+    if (!logMonitorEl) logMonitorEl = document.getElementById('logMonitorData');
+    if (!logMonitorEl) return;
+    logMonitorEl.parentElement.style.display = 'block';
+    const lines = await res.json();
+    for (const line of lines) {
+      const l = JSON.parse(line);
+      const row = document.createElement("tr");
+      row.style = 'padding: 10px; margin: 0;';
+      row.innerHTML = `<td>${new Date(1000 * l.created).toISOString()}</td><td>${l.level}</td><td>${l.facility}</td><td>${l.module}</td><td>${l.msg}</td>`;
+      logMonitorEl.appendChild(row);
+      while (logMonitorEl.childElementCount > 100) logMonitorEl.removeChild(logMonitorEl.firstChild);
+      logMonitorEl.scrollTop = logMonitorEl.scrollHeight
+    }
+  }
+}
+
+async function logMonitorCreate() {
+  const el = document.getElementsByTagName('footer')[0];
+  if (!el) return;
+  el.classList.add('log-monitor');
+  el.innerHTML = `
+    <table style="width: 100%">
+      <thead style="display: block; text-align: left; border-bottom: solid 1px var(--button-primary-border-color)">
+        <tr>
+          <th style="width: 170px">Time</th>
+          <th>Level</th>
+          <th style="width: 72px">Facility</th>
+          <th style="width: 124px">Module</th>
+          <th>Message</th>
+        </tr>
+      </thead>
+      <tbody id="logMonitorData" style="white-space: nowrap; height: 10vh; width: 100vw; display: block; overflow-x: hidden; overflow-y: scroll">
+      </tbody>
+    </table>
+  `;
+  logMonitor();
+}