Modified the Neighbours graphs to eliminate the errors.

meshview/templates/node_graphs.html

@@ -4,7 +4,6 @@
 </a>
 {% endmacro %}
 
-<!-- Tabs -->
 <ul class="nav nav-tabs" role="tablist">
     <li class="nav-item" role="presentation">
         <button class="nav-link active" data-bs-toggle="tab" data-bs-target="#overview" type="button" role="tab">Overview</button>
@@ -20,7 +19,6 @@
     </li>
 </ul>
 
-<!-- Tab Content -->
 <div class="tab-content mt-3">
     <div class="tab-pane fade show active" id="overview" role="tabpanel">
         <dl>
@@ -36,9 +34,10 @@
     <div class="tab-pane fade" id="neighbors" role="tabpanel">
         <div class="d-flex justify-content-between align-items-center mb-2">
             <h5 class="text-white">Neighbor SNR</h5>
-            <button class="btn btn-sm btn-outline-light" data-bs-toggle="modal" data-bs-target="#fullChartModal">
-                Expand
-            </button>
+            <div>
+                <button class="btn btn-sm btn-outline-light me-2" id="downloadCsvBtn">Download CSV</button>
+                <button class="btn btn-sm btn-outline-light" data-bs-toggle="modal" data-bs-target="#fullChartModal">Expand</button>
+            </div>
         </div>
         <div id="neighborChart" style="width: 100%; height: 400px;"></div>
         <noscript>
@@ -49,25 +48,46 @@
     </div>
 
     <div class="tab-pane fade" id="weather" role="tabpanel">
-        <dl><dt>Temperature</dt><dd>{{ graph("temperature") }}</dd></dl>
-        <dl><dt>Humidity</dt><dd>{{ graph("humidity") }}</dd></dl>
-        <dl><dt>Pressure</dt><dd>{{ graph("pressure") }}</dd></dl>
-        <dl><dt>Indoor Air Quality</dt><dd>{{ graph("iaq") }}</dd></dl>
-        <dl><dt>Wind Speed</dt><dd>{{ graph("wind_speed") }}</dd></dl>
-        <dl><dt>Wind Direction</dt><dd>{{ graph("wind_direction") }}</dd></dl>
+        <dl>
+            <dt>Temperature</dt>
+            <dd>{{ graph("temperature") }}</dd>
+        </dl>
+        <dl>
+            <dt>Humidity</dt>
+            <dd>{{ graph("humidity") }}</dd>
+        </dl>
+        <dl>
+            <dt>Pressure</dt>
+            <dd>{{ graph("pressure") }}</dd>
+        </dl>
+        <dl>
+            <dt>Indoor Air Quality</dt>
+            <dd>{{ graph("iaq") }}</dd>
+        </dl>
+        <dl>
+            <dt>Wind Speed</dt>
+            <dd>{{ graph("wind_speed") }}</dd>
+        </dl>
+        <dl>
+            <dt>Wind Direction</dt>
+            <dd>{{ graph("wind_direction") }}</dd>
+        </dl>
     </div>
 
     <div class="tab-pane fade" id="power" role="tabpanel">
-        <dl><dt>Power Metrics</dt><dd>{{ graph("power_metrics") }}</dd></dl>
+        <dl>
+            <dt>Power Metrics</dt>
+            <dd>{{ graph("power_metrics") }}</dd>
+        </dl>
     </div>
 </div>
 
-<!-- Fullscreen Modal for Neighbor Chart -->
+<!-- Fullscreen Modal -->
 <div class="modal fade" id="fullChartModal" tabindex="-1" aria-labelledby="fullChartModalLabel" aria-hidden="true">
   <div class="modal-dialog modal-fullscreen">
-    <div class="modal-content bg-dark">
+    <div class="modal-content bg-dark text-white">
       <div class="modal-header">
-        <h5 class="modal-title text-white" id="fullChartModalLabel">Full Neighbor SNR Chart</h5>
+        <h5 class="modal-title" id="fullChartModalLabel">Full Graph</h5>
         <button type="button" class="btn-close btn-close-white" data-bs-dismiss="modal" aria-label="Close"></button>
       </div>
       <div class="modal-body">
@@ -80,46 +100,33 @@
 <!-- ECharts Library -->
 <script src="https://cdn.jsdelivr.net/npm/echarts@5/dist/echarts.min.js"></script>
 
-<!-- JavaScript -->
 <script>
 document.addEventListener("DOMContentLoaded", function () {
-    const neighborTab = document.querySelector('button[data-bs-target="#neighbors"]');
-    neighborTab.addEventListener('shown.bs.tab', function () {
-        const chartContainer = document.getElementById('neighborChart');
+    const tab = document.querySelector('button[data-bs-target="#neighbors"]');
+    const chartContainer = document.getElementById('neighborChart');
+    const fullChartContainer = document.getElementById('fullNeighborChart');
+    let neighborChartData = null;
+
+    tab.addEventListener('shown.bs.tab', function () {
         if (chartContainer.dataset.loaded) return;
 
         fetch("/graph/neighbors_json/{{ node_id }}")
             .then(res => res.json())
             .then(json => {
+                neighborChartData = json;
+
+                const option = getChartOption(json);
                 const chart = echarts.init(chartContainer);
-                chart.setOption({
-                    title: { text: 'Neighbor SNR over Time', textStyle: { color: '#ffffff' }},
-                    tooltip: { trigger: 'axis' },
-                    legend: { type: 'scroll', top: 30, textStyle: { color: '#ffffff' }},
-                    grid: { left: 60, right: 30, bottom: 80, top: 60, containLabel: true },
-                    xAxis: {
-                        type: 'category',
-                        data: json.timestamps,
-                        name: 'Time',
-                        axisLabel: { rotate: 45, color: '#ffffff' },
-                        nameTextStyle: { color: '#ffffff' }
-                    },
-                    yAxis: {
-                        type: 'value',
-                        name: 'SNR',
-                        axisLabel: { color: '#ffffff' },
-                        nameTextStyle: { color: '#ffffff' }
-                    },
-                    series: json.series.map(s => ({
-                        name: s.name,
-                        type: 'line',
-                        data: s.data,
-                        connectNulls: true,
-                        showSymbol: false,
-                        smooth: true
-                    }))
-                });
+                chart.setOption(option);
                 chartContainer.dataset.loaded = "true";
+
+                // Modal chart
+                const modal = document.getElementById('fullChartModal');
+                modal.addEventListener('shown.bs.modal', () => {
+                    const fullChart = echarts.init(fullChartContainer);
+                    fullChart.setOption(option);
+                    fullChart.resize();
+                });
             })
             .catch(err => {
                 chartContainer.innerText = "Failed to load graph.";
@@ -127,44 +134,72 @@ document.addEventListener("DOMContentLoaded", function () {
             });
     });
 
-    // Fullscreen chart loader
-    document.getElementById('fullChartModal').addEventListener('shown.bs.modal', function () {
-        const container = document.getElementById('fullNeighborChart');
-        container.innerHTML = ''; // clear
+    function getChartOption(json) {
+        return {
+            title: {
+                text: 'Neighbor SNR over Time',
+                textStyle: { color: '#ffffff' }
+            },
+            tooltip: {
+                trigger: 'axis',
+            },
+            legend: {
+                type: 'scroll',
+                top: 30,
+                textStyle: { color: '#ffffff' }
+            },
+            grid: {
+                left: '5%',
+                right: '5%',
+                bottom: '10%',
+                containLabel: true
+            },
+            xAxis: {
+                type: 'category',
+                data: json.timestamps,
+                name: 'Time',
+                axisLabel: { rotate: 45, color: '#ffffff' },
+                nameTextStyle: { color: '#ffffff' }
+            },
+            yAxis: {
+                type: 'value',
+                name: 'SNR',
+                axisLabel: { color: '#ffffff' },
+                nameTextStyle: { color: '#ffffff' }
+            },
+            series: json.series.map(s => ({
+                name: s.name,
+                type: 'line',
+                data: s.data,
+                connectNulls: true,
+                showSymbol: false,
+                smooth: true
+            }))
+        };
+    }
 
-        fetch("/graph/neighbors_json/{{ node_id }}")
-            .then(res => res.json())
-            .then(json => {
-                const chart = echarts.init(container);
-                chart.setOption({
-                    title: { text: 'Neighbor SNR over Time', textStyle: { color: '#ffffff' }},
-                    tooltip: { trigger: 'axis' },
-                    legend: { type: 'scroll', top: 30, textStyle: { color: '#ffffff' }},
-                    grid: { left: 60, right: 30, bottom: 80, top: 60, containLabel: true },
-                    xAxis: {
-                        type: 'category',
-                        data: json.timestamps,
-                        name: 'Time',
-                        axisLabel: { rotate: 45, color: '#ffffff' },
-                        nameTextStyle: { color: '#ffffff' }
-                    },
-                    yAxis: {
-                        type: 'value',
-                        name: 'SNR',
-                        axisLabel: { color: '#ffffff' },
-                        nameTextStyle: { color: '#ffffff' }
-                    },
-                    series: json.series.map(s => ({
-                        name: s.name,
-                        type: 'line',
-                        data: s.data,
-                        connectNulls: true,
-                        showSymbol: false,
-                        smooth: true
-                    }))
-                });
-                window.addEventListener('resize', () => chart.resize());
-            });
+    // Download CSV logic
+    document.getElementById('downloadCsvBtn').addEventListener('click', function () {
+        if (!neighborChartData) return alert("Chart data not loaded yet.");
+
+        const { timestamps, series } = neighborChartData;
+        let csv = 'Time,' + series.map(s => s.name).join(',') + '\n';
+
+        for (let i = 0; i < timestamps.length; i++) {
+            const row = [timestamps[i]];
+            for (const s of series) {
+                row.push(s.data[i] != null ? s.data[i] : '');
+            }
+            csv += row.join(',') + '\n';
+        }
+
+        const blob = new Blob([csv], { type: 'text/csv' });
+        const url = URL.createObjectURL(blob);
+        const a = document.createElement('a');
+        a.href = url;
+        a.download = `neighbor_snr_{{ node_id }}.csv`;
+        a.click();
+        URL.revokeObjectURL(url);
     });
 });
 </script>