From 6d34e543fed0f3c63f5cafcebd979cdad0b488cf Mon Sep 17 00:00:00 2001
From: serversdwn <brianharrison02@gmail.com>
Date: Wed, 7 Jan 2026 03:43:58 +0000
Subject: [PATCH] Update Terra-view SLM live view to use correct DRD field
 names
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Updated the live view UI to reflect the correct NL43 DRD field mapping:
- Added Lpeak (peak level) metric display with orange color scheme
- Updated labels: "Lp (Instant)", "Leq (Average)", "Lmax (Max)", "Lmin (Min)"
- Fixed chart datasets to track Lp and Leq measurements
- Added start/stop stream button toggle functionality
- Updated JavaScript to handle all 5 measurement fields correctly
- Fixed Jinja2 template syntax error in lmin field rendering

Changes align with SLMM backend DRD parsing corrections to ensure
end-to-end consistency with NL43 Communications Guide specification.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
---
 templates/partials/slm_live_view.html | 208 ++++++++++++++++++++++++--
 1 file changed, 193 insertions(+), 15 deletions(-)

diff --git a/templates/partials/slm_live_view.html b/templates/partials/slm_live_view.html
index 231b835..d10264d 100644
--- a/templates/partials/slm_live_view.html
+++ b/templates/partials/slm_live_view.html
@@ -74,19 +74,28 @@
             Reset
         </button>
 
-        <button onclick="initLiveDataStream('{{ unit.id }}')"
+        <button id="start-stream-btn" onclick="initLiveDataStream('{{ unit.id }}')"
                 class="px-4 py-2 bg-seismo-orange hover:bg-orange-600 text-white rounded-lg flex items-center ml-auto">
             <svg class="w-5 h-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                 <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 10V3L4 14h7v7l9-11h-7z"></path>
             </svg>
             Start Live Stream
         </button>
+
+        <button id="stop-stream-btn" onclick="stopLiveDataStream()" style="display: none;"
+                class="px-4 py-2 bg-red-600 hover:bg-red-700 text-white rounded-lg flex items-center ml-auto">
+            <svg class="w-5 h-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 12a9 9 0 11-18 0 9 9 0 0118 0z"></path>
+                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 10a1 1 0 011-1h4a1 1 0 011 1v4a1 1 0 01-1 1h-4a1 1 0 01-1-1v-4z"></path>
+            </svg>
+            Stop Live Stream
+        </button>
     </div>
 
     <!-- Current Metrics -->
-    <div class="grid grid-cols-4 gap-4 mb-6">
+    <div class="grid grid-cols-5 gap-4 mb-6">
         <div class="bg-blue-50 dark:bg-blue-900/20 rounded-lg p-4">
-            <p class="text-xs text-gray-600 dark:text-gray-400 mb-1">Lp (Current)</p>
+            <p class="text-xs text-gray-600 dark:text-gray-400 mb-1">Lp (Instant)</p>
             <p id="live-lp" class="text-2xl font-bold text-blue-600 dark:text-blue-400">
                 {% if current_status and current_status.lp %}{{ current_status.lp }}{% else %}--{% endif %}
             </p>
@@ -102,7 +111,7 @@
         </div>
 
         <div class="bg-red-50 dark:bg-red-900/20 rounded-lg p-4">
-            <p class="text-xs text-gray-600 dark:text-gray-400 mb-1">Lmax (Peak)</p>
+            <p class="text-xs text-gray-600 dark:text-gray-400 mb-1">Lmax (Max)</p>
             <p id="live-lmax" class="text-2xl font-bold text-red-600 dark:text-red-400">
                 {% if current_status and current_status.lmax %}{{ current_status.lmax }}{% else %}--{% endif %}
             </p>
@@ -110,16 +119,24 @@
         </div>
 
         <div class="bg-purple-50 dark:bg-purple-900/20 rounded-lg p-4">
-            <p class="text-xs text-gray-600 dark:text-gray-400 mb-1">Lmin</p>
+            <p class="text-xs text-gray-600 dark:text-gray-400 mb-1">Lmin (Min)</p>
             <p id="live-lmin" class="text-2xl font-bold text-purple-600 dark:text-purple-400">
                 {% if current_status and current_status.lmin %}{{ current_status.lmin }}{% else %}--{% endif %}
             </p>
             <p class="text-xs text-gray-500 dark:text-gray-400">dB</p>
         </div>
+
+        <div class="bg-orange-50 dark:bg-orange-900/20 rounded-lg p-4">
+            <p class="text-xs text-gray-600 dark:text-gray-400 mb-1">Lpeak (Peak)</p>
+            <p id="live-lpeak" class="text-2xl font-bold text-orange-600 dark:text-orange-400">
+                {% if current_status and current_status.lpeak %}{{ current_status.lpeak }}{% else %}--{% endif %}
+            </p>
+            <p class="text-xs text-gray-500 dark:text-gray-400">dB</p>
+        </div>
     </div>
 
     <!-- Live Chart -->
-    <div class="flex-1 bg-gray-50 dark:bg-gray-900/50 rounded-lg p-4">
+    <div class="flex-1 bg-gray-50 dark:bg-gray-900/50 rounded-lg p-4" style="min-height: 400px;">
         <canvas id="liveChart"></canvas>
     </div>
 
@@ -156,20 +173,45 @@
 <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
 <script>
 // Initialize Chart.js for live data visualization
-const ctx = document.getElementById('liveChart').getContext('2d');
+function initializeChart() {
+    // Wait for Chart.js to load
+    if (typeof Chart === 'undefined') {
+        console.log('Waiting for Chart.js to load...');
+        setTimeout(initializeChart, 100);
+        return;
+    }
 
-// Dark mode detection
-const isDarkMode = document.documentElement.classList.contains('dark');
-const gridColor = isDarkMode ? 'rgba(255, 255, 255, 0.1)' : 'rgba(0, 0, 0, 0.1)';
-const textColor = isDarkMode ? 'rgba(255, 255, 255, 0.7)' : 'rgba(0, 0, 0, 0.7)';
+    console.log('Chart.js loaded, version:', Chart.version);
 
-window.liveChart = new Chart(ctx, {
+    const canvas = document.getElementById('liveChart');
+    if (!canvas) {
+        console.error('Chart canvas not found');
+        return;
+    }
+
+    console.log('Canvas found:', canvas);
+
+    // Destroy existing chart if it exists
+    if (window.liveChart && typeof window.liveChart.destroy === 'function') {
+        console.log('Destroying existing chart');
+        window.liveChart.destroy();
+    }
+
+    const ctx = canvas.getContext('2d');
+    console.log('Creating new chart...');
+
+    // Dark mode detection
+    const isDarkMode = document.documentElement.classList.contains('dark');
+    const gridColor = isDarkMode ? 'rgba(255, 255, 255, 0.1)' : 'rgba(0, 0, 0, 0.1)';
+    const textColor = isDarkMode ? 'rgba(255, 255, 255, 0.7)' : 'rgba(0, 0, 0, 0.7)';
+
+    window.liveChart = new Chart(ctx, {
     type: 'line',
     data: {
         labels: [],
         datasets: [
             {
-                label: 'Lp (Current Level)',
+                label: 'Lp (Instantaneous)',
                 data: [],
                 borderColor: 'rgb(59, 130, 246)',
                 backgroundColor: 'rgba(59, 130, 246, 0.1)',
@@ -178,7 +220,7 @@ window.liveChart = new Chart(ctx, {
                 pointRadius: 0
             },
             {
-                label: 'Leq (Average)',
+                label: 'Leq (Equivalent)',
                 data: [],
                 borderColor: 'rgb(34, 197, 94)',
                 backgroundColor: 'rgba(34, 197, 94, 0.1)',
@@ -232,7 +274,136 @@ window.liveChart = new Chart(ctx, {
             }
         }
     }
-});
+    });
+
+    console.log('Chart created successfully:', window.liveChart);
+}
+
+// Initialize chart when DOM is ready
+console.log('Executing initializeChart...');
+initializeChart();
+
+// WebSocket management (use global scope to avoid redeclaration)
+if (typeof window.currentWebSocket === 'undefined') {
+    window.currentWebSocket = null;
+}
+
+function initLiveDataStream(unitId) {
+    // Close existing connection if any
+    if (window.currentWebSocket) {
+        window.currentWebSocket.close();
+    }
+
+    // Reset chart data
+    if (window.chartData) {
+        window.chartData.timestamps = [];
+        window.chartData.lp = [];
+        window.chartData.leq = [];
+    }
+    if (window.liveChart && window.liveChart.data && window.liveChart.data.datasets) {
+        window.liveChart.data.labels = [];
+        window.liveChart.data.datasets[0].data = [];
+        window.liveChart.data.datasets[1].data = [];
+        window.liveChart.update();
+    }
+
+    // WebSocket URL for SLMM backend via proxy
+    const wsProtocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
+    const wsUrl = `${wsProtocol}//${window.location.host}/api/slmm/${unitId}/live`;
+
+    window.currentWebSocket = new WebSocket(wsUrl);
+
+    window.currentWebSocket.onopen = function() {
+        console.log('WebSocket connected');
+        // Toggle button visibility
+        const startBtn = document.getElementById('start-stream-btn');
+        const stopBtn = document.getElementById('stop-stream-btn');
+        if (startBtn) startBtn.style.display = 'none';
+        if (stopBtn) stopBtn.style.display = 'flex';
+    };
+
+    window.currentWebSocket.onmessage = function(event) {
+        try {
+            const data = JSON.parse(event.data);
+            console.log('WebSocket data received:', data);
+            updateLiveMetrics(data);
+            updateLiveChart(data);
+        } catch (error) {
+            console.error('Error parsing WebSocket message:', error);
+        }
+    };
+
+    window.currentWebSocket.onerror = function(error) {
+        console.error('WebSocket error:', error);
+    };
+
+    window.currentWebSocket.onclose = function() {
+        console.log('WebSocket closed');
+        // Toggle button visibility
+        const startBtn = document.getElementById('start-stream-btn');
+        const stopBtn = document.getElementById('stop-stream-btn');
+        if (startBtn) startBtn.style.display = 'flex';
+        if (stopBtn) stopBtn.style.display = 'none';
+    };
+}
+
+function stopLiveDataStream() {
+    if (window.currentWebSocket) {
+        window.currentWebSocket.close();
+        window.currentWebSocket = null;
+    }
+}
+
+// Update metrics display
+function updateLiveMetrics(data) {
+    if (document.getElementById('live-lp')) {
+        document.getElementById('live-lp').textContent = data.lp || '--';
+    }
+    if (document.getElementById('live-leq')) {
+        document.getElementById('live-leq').textContent = data.leq || '--';
+    }
+    if (document.getElementById('live-lmax')) {
+        document.getElementById('live-lmax').textContent = data.lmax || '--';
+    }
+    if (document.getElementById('live-lmin')) {
+        document.getElementById('live-lmin').textContent = data.lmin || '--';
+    }
+    if (document.getElementById('live-lpeak')) {
+        document.getElementById('live-lpeak').textContent = data.lpeak || '--';
+    }
+}
+
+// Chart data storage (use global scope to avoid redeclaration)
+if (typeof window.chartData === 'undefined') {
+    window.chartData = {
+        timestamps: [],
+        lp: [],
+        leq: []
+    };
+}
+
+// Update live chart
+function updateLiveChart(data) {
+    const now = new Date();
+    window.chartData.timestamps.push(now.toLocaleTimeString());
+    window.chartData.lp.push(parseFloat(data.lp || 0));
+    window.chartData.leq.push(parseFloat(data.leq || 0));
+
+    // Keep only last 60 data points
+    if (window.chartData.timestamps.length > 60) {
+        window.chartData.timestamps.shift();
+        window.chartData.lp.shift();
+        window.chartData.leq.shift();
+    }
+
+    // Update chart if available
+    if (window.liveChart) {
+        window.liveChart.data.labels = window.chartData.timestamps;
+        window.liveChart.data.datasets[0].data = window.chartData.lp;
+        window.liveChart.data.datasets[1].data = window.chartData.leq;
+        window.liveChart.update('none');
+    }
+}
 
 // Control function
 async function controlUnit(unitId, action) {
@@ -257,4 +428,11 @@ async function controlUnit(unitId, action) {
         alert(`Failed to control unit: ${error.message}`);
     }
 }
+
+// Cleanup on page unload
+window.addEventListener('beforeunload', function() {
+    if (window.currentWebSocket) {
+        window.currentWebSocket.close();
+    }
+});
 </script>