Update public/scripts/trends.js

public/scripts/trends.js

@@ -3,9 +3,11 @@ function average(arr) {
   return arr.reduce((a, b) => a + b, 0) / arr.length;
 }
 
-// period definitions
+// interval mappings
 const periodKeys   = ['hourly','daily','weekly','monthly','yearly'];
 const periodLabels = ['Hourly','Daily','Weekly','Monthly','Yearly'];
+
+// bucket definitions
 const periodConfig = {
   hourly:  { keyFn: r => r.timestamp.slice(0,13), labelFn: k => k.replace('T',' ') },
   daily:   { keyFn: r => r.timestamp.slice(0,10), labelFn: k => k },
@@ -19,22 +21,62 @@ const periodConfig = {
 };
 
 // global Chart.js instance
-let trendChart;
+let trendChart, dataTable;
 
-// fetch all readings
+// fetch readings from server
 async function fetchReadings() {
   const res = await fetch('/api/readings');
   return res.ok ? res.json() : [];
 }
 
-// build or update chart
+// determine direction based on dock door #
+function getDirection(dock) {
+  return ( (dock>=124 && dock<=138) || (dock>=202 && dock<=209) )
+    ? 'Inbound'
+    : 'Outbound';
+}
+
+// render DataTable
+function renderTable(allReadings) {
+  const tbody = $('#trendTable tbody').empty();
+  allReadings.forEach(r => {
+    const ts = new Date(r.timestamp).toLocaleString('en-US', { timeZone:'America/New_York' });
+    const dir = getDirection(r.dockDoor);
+    tbody.append(`
+      <tr>
+        <td>${ts}</td>
+        <td>${r.temperature.toFixed(1)}</td>
+        <td>${r.humidity.toFixed(1)}</td>
+        <td>${r.heatIndex.toFixed(1)}</td>
+        <td>${r.dockDoor}</td>
+        <td>${dir}</td>
+      </tr>
+    `);
+  });
+
+  // initialize or redraw DataTable
+  if ($.fn.DataTable.isDataTable('#trendTable')) {
+    dataTable.clear().rows.add($('#trendTable tbody tr')).draw();
+  } else {
+    dataTable = $('#trendTable').DataTable({
+      paging:   true,
+      pageLength: 25,
+      ordering: true,
+      order: [[0,'desc']],
+      autoWidth: false,
+      scrollX: true
+    });
+  }
+}
+
+// draw or update chart
 async function drawTrend() {
   const all = await fetchReadings();
   const slider    = document.getElementById('periodSlider');
   const periodKey = periodKeys[slider.value];
   const cfg       = periodConfig[periodKey];
 
-  // group and compute stats
+  // group & stats
   const groups = {};
   all.forEach(r => {
     const key = cfg.keyFn(r);
@@ -74,10 +116,13 @@ async function drawTrend() {
   } else {
     trendChart = new Chart(ctx, {
       type: 'line',
-      data: { labels: labels.map(cfg.labelFn), datasets },
+      data: {
+        labels: labels.map(cfg.labelFn),
+        datasets
+      },
       options: {
         responsive: true,
-        maintainAspectRatio: false,   // <<— ensure the canvas fills its container
+        maintainAspectRatio: false,
         plugins: {
           legend:  { display: true },
           tooltip: { mode:'index', intersect:false },
@@ -93,17 +138,24 @@ async function drawTrend() {
       }
     });
   }
+
+  // always update table below
+  renderTable(all);
 }
 
+// wire up controls
 document.addEventListener('DOMContentLoaded', () => {
+  // initial draw
   drawTrend();
+
   // slider
   document.getElementById('periodSlider')
-      .addEventListener('input', e => {
-        document.getElementById('periodLabel').textContent = periodLabels[e.target.value];
-        drawTrend();
-      });
+    .addEventListener('input', e => {
+      document.getElementById('periodLabel').textContent = periodLabels[e.target.value];
+      drawTrend();
+    });
+
   // toggles
   document.querySelectorAll('#metricToggles input')
-      .forEach(chk => chk.addEventListener('change', drawTrend));
+    .forEach(chk => chk.addEventListener('change', drawTrend));
 });