Upload missing script from 8.2.0c's commit

scripting/nodeJS/system_stats.js

@@ -0,0 +1,104 @@
+const os = require('os');
+const fs = require('fs');
+const { execSync } = require('child_process');
+const mysql = require('mysql2');
+
+// MySQL config
+const db = mysql.createPool({
+    host: 'localhost',
+    user: '',
+    password: '',
+    database: '',
+    port: 6969
+});
+
+// Cache to store last known values
+const lastValues = {
+    memory_used_gib: null,
+    memory_total_gib: null,
+    cpu_usage_percent: null,
+    cpu_frequency_x10: null,
+    cpu_temperature_c: null
+};
+
+function getMemoryInfoGiB() {
+    const totalGiB = Math.round(os.totalmem() / 1073741824);
+    const usedGiB = Math.round((os.totalmem() - os.freemem()) / 1073741824);
+    return { totalGiB, usedGiB };
+}
+
+function getCPUFrequencyMultiplied() {
+    const freqMHz = os.cpus()[0].speed;
+    const freqGHz = freqMHz / 1000;
+    return Math.round(freqGHz * 10); // e.g., 3.5 GHz → 35
+}
+
+function getCPUTemperatureC() {
+    try {
+        const output = execSync('sensors').toString();
+        const match = output.match(/Tctl:\s+\+?(\d+(\.\d+)?)/) ||
+                      output.match(/Tdie:\s+\+?(\d+(\.\d+)?)/) ||
+                      output.match(/\+(\d+(\.\d+)?)°C/);
+        if (match) {
+            return Math.round(parseFloat(match[1]));
+        }
+    } catch (_) {
+        try {
+            const raw = fs.readFileSync('/sys/class/thermal/thermal_zone0/temp', 'utf8');
+            return Math.round(parseInt(raw) / 1000);
+        } catch (_) {
+            return 0;
+        }
+    }
+    return 0;
+}
+
+function getCPUUsage(callback) {
+    const start = os.cpus();
+
+    setTimeout(() => {
+        const end = os.cpus();
+        let idleDiff = 0;
+        let totalDiff = 0;
+
+        for (let i = 0; i < start.length; i++) {
+            const s = start[i].times;
+            const e = end[i].times;
+            const idle = e.idle - s.idle;
+            const total = (e.user - s.user) + (e.nice - s.nice) +
+                          (e.sys - s.sys) + (e.irq - s.irq) + idle;
+
+            idleDiff += idle;
+            totalDiff += total;
+        }
+
+        const usage = Math.round(100 - (idleDiff / totalDiff) * 100);
+        callback(usage);
+    }, 1000);
+}
+
+function updateIfChanged(table, newValue) {
+    if (lastValues[table] !== newValue) {
+        lastValues[table] = newValue;
+        const query = `UPDATE ${table} SET value = ? WHERE id = 1`;
+        db.query(query, [newValue], (err) => {
+            if (err) console.error(`DB error updating ${table}:`, err.message);
+        });
+    }
+}
+
+function collectAndUpdateStats() {
+    getCPUUsage((cpuUsage) => {
+        const { usedGiB, totalGiB } = getMemoryInfoGiB();
+        const cpuFreq = getCPUFrequencyMultiplied();
+        const cpuTemp = getCPUTemperatureC();
+
+        updateIfChanged('memory_used_gib', usedGiB);
+        updateIfChanged('memory_total_gib', totalGiB);
+        updateIfChanged('cpu_usage_percent', cpuUsage);
+        updateIfChanged('cpu_frequency_x10', cpuFreq);
+        updateIfChanged('cpu_temperature_c', cpuTemp);
+    });
+}
+
+setInterval(collectAndUpdateStats, 10000); // every 10 seconds