Update public/scripts/trends.js

public/scripts/trends.js

@@ -1,6 +1,6 @@
 // public/scripts/trends.js
 
-// ─── Timeframes ──────────────────────────────────────────────────────────────
+// --- Timeframe options ---
 const tfConfig = [
   { unit:'hours',  count:24,  label:'Last 24 Hours'  },
   { unit:'days',   count:7,   label:'Last 7 Days'    },
@@ -9,15 +9,11 @@ const tfConfig = [
   { unit:'years',  count:1,   label:'All Time'        }
 ];
 
-// ─── Helpers ─────────────────────────────────────────────────────────────────
-function formatESTTimestamp(ts) {
-  // ts is "YYYY-MM-DD HH:mm:ss" or ISO → we assume you converted to "M/D/YY @HH:mm"
-  return ts; // adjust if you need to parse differently
-}
-function parseLocalDate(ts) {
-  // if you have epoch_ms, convert: return new Date(epoch_ms)
-  return new Date(ts.replace(' ', 'T'));
-}
+// --- State ---
+let readings = [];
+let chart;
+
+// --- Helpers ---
 function subtract(date, count, unit) {
   const d = new Date(date);
   switch(unit) {
@@ -30,37 +26,36 @@ function subtract(date, count, unit) {
   return d;
 }
 
-// ─── State & Chart Ref ───────────────────────────────────────────────────────
-let readings = [];
-let chart;
-
-// ─── Initialize ───────────────────────────────────────────────────────────────
+// --- Load & initialize ---
 document.addEventListener('DOMContentLoaded', async () => {
-  await loadReadings();
-  setupUI();
-  initChart();
-  updateView();
-});
-
-// ─── Load data ────────────────────────────────────────────────────────────────
-async function loadReadings() {
+  console.log('📡 Loading readings from /api/readings…');
+  try {
     const data = await fetch('/api/readings').then(r => r.json());
+    console.log('✅ Received readings:', data);
     readings = data.map(r => ({
       stationDockDoor: r.stationDockDoor,
       location:        r.location,
       temperature:     r.temperature,
       humidity:        r.humidity,
       heatIndex:       r.heatIndex,
+      dateObj:         new Date(r.epoch_ms),
       formattedTs: new Date(r.epoch_ms).toLocaleString('en-US', {
         timeZone:'America/New_York',
         month:'numeric', day:'numeric', year:'2-digit',
-      hour12: false, hour:'2-digit', minute:'2-digit'
-    }).replace(',',' @'),
-    dateObj:         new Date(r.epoch_ms)
+        hour:'2-digit', minute:'2-digit', hour12:false
+      }).replace(',',' @')
     }));
-}
+    console.log('✔ Parsed readings:', readings);
 
-// ─── UI Wiring ────────────────────────────────────────────────────────────────
+    setupUI();
+    initChart();
+    updateView();
+  } catch (err) {
+    console.error('❌ Failed to load readings:', err);
+  }
+});
+
+// --- UI wiring ---
 function setupUI() {
   // Slider
   const slider = document.getElementById('timeframe-slider');
@@ -71,7 +66,7 @@ function setupUI() {
   });
   label.textContent = tfConfig[slider.value].label;
 
-  // Metric checkboxes
+  // Metrics toggles
   document.getElementsByName('metric').forEach(cb => {
     cb.addEventListener('change', updateView);
   });
@@ -93,8 +88,13 @@ function setupUI() {
   });
 }
 
-// ─── Chart.js Initialization ──────────────────────────────────────────────────
+// --- Chart.js init ---
 function initChart() {
+  if (typeof Chart === 'undefined') {
+    console.error('❌ Chart.js not loaded!');
+    return;
+  }
+  console.log('📊 Initializing Chart.js');
   const ctx = document.getElementById('trend-chart').getContext('2d');
   chart = new Chart(ctx, {
     type: 'line',
@@ -111,20 +111,27 @@ function initChart() {
   });
 }
 
-// ─── Update chart & table ────────────────────────────────────────────────────
+// --- Render chart & table ---
 function updateView() {
+  if (!chart) return;
+  console.log('🔄 updateView called');
+
+  // Timeframe cutoff
   const idx = +document.getElementById('timeframe-slider').value;
   const { unit, count } = tfConfig[idx];
   const cutoff = subtract(new Date(), count, unit);
+  console.log(`   Showing data since ${cutoff.toISOString()}`);
 
-  // Filter
+  // Filter readings
   const filtered = readings.filter(r => r.dateObj >= cutoff);
+  console.log(`   ${filtered.length}/${readings.length} points after filtering`);
 
   // Metrics selected
   const selected = Array.from(document.getElementsByName('metric'))
     .filter(cb => cb.checked).map(cb => cb.value);
+  console.log('   Metrics selected:', selected);
 
-  // Chart data
+  // Update chart
   chart.data.labels = filtered.map(r => r.formattedTs);
   chart.data.datasets = [];
   if (selected.includes('temperature')) {
@@ -148,9 +155,10 @@ function updateView() {
       tension: 0.3
     });
   }
+  console.log('   Chart update:', chart.data);
   chart.update();
 
-  // Table
+  // Update table
   const tbody = document.getElementById('trends-table-body');
   tbody.innerHTML = '';
   filtered.forEach(r => {
@@ -165,4 +173,5 @@ function updateView() {
     `;
     tbody.appendChild(tr);
   });
+  console.log('   Table populated with', filtered.length, 'rows');
 }