fix: Update vpn_clients speed columns in ServerMonitoring for real-time display

inc/ServerMonitoring.php

@@ -50,7 +50,8 @@ class ServerMonitoring
         $results = [];
 
         foreach ($clients as $client) {
-            if ($client['status'] !== 'active') continue;
+            if ($client['status'] !== 'active')
+                continue;
 
             $stats = $this->getClientStats($client);
             if ($stats) {
@@ -131,13 +132,15 @@ class ServerMonitoring
         $cmd = "cat /sys/class/net/\$(ip route | grep default | awk '{print \$5}' | head -1)/statistics/rx_bytes";
         $bytes1 = $this->execSSH($cmd);
 
-        if (!$bytes1) return null;
+        if (!$bytes1)
+            return null;
 
         sleep(1); // Wait 1 second
 
         $bytes2 = $this->execSSH($cmd);
 
-        if (!$bytes2) return null;
+        if (!$bytes2)
+            return null;
 
         // Calculate speed in Mbps
         $bytesPerSec = (int) $bytes2 - (int) $bytes1;
@@ -155,13 +158,15 @@ class ServerMonitoring
         $cmd = "cat /sys/class/net/\$(ip route | grep default | awk '{print \$5}' | head -1)/statistics/tx_bytes";
         $bytes1 = $this->execSSH($cmd);
 
-        if (!$bytes1) return null;
+        if (!$bytes1)
+            return null;
 
         sleep(1); // Wait 1 second
 
         $bytes2 = $this->execSSH($cmd);
 
-        if (!$bytes2) return null;
+        if (!$bytes2)
+            return null;
 
         // Calculate speed in Mbps
         $bytesPerSec = (int) $bytes2 - (int) $bytes1;
@@ -184,7 +189,8 @@ class ServerMonitoring
         $cmd = "docker exec {$containerName} wg show all dump | grep '{$publicKey}' | awk '{print \$6, \$7}'";
         $result = $this->execSSH($cmd);
 
-        if (!$result) return null;
+        if (!$result)
+            return null;
 
         list($bytesReceived, $bytesSent) = explode(' ', trim($result));
 
@@ -268,14 +274,44 @@ class ServerMonitoring
             $stats['speed_down_kbps'],
         ]);
 
-        // Update last_handshake in vpn_clients table
+        // Update vpn_clients table with latest stats
         $stmt = $db->prepare("
             UPDATE vpn_clients 
-            SET last_handshake = NOW() 
+            SET bytes_sent = ?, bytes_received = ?, speed_up = ?, speed_down = ?, current_speed = ?, last_handshake = NOW(), last_sync_at = NOW()
             WHERE id = ?
         ");
 
-        $stmt->execute([$clientId]);
+        $currentSpeed = $stats['speed_up_kbps'] + $stats['speed_down_kbps']; // Total speed in Kbps? Or bytes/s?
+        // Note: speed_up_kbps is in Kbps (kilobits?). 
+        // VpnClient stores speed in Bytes/s (based on my previous edit: bytesDiff/timeDiff).
+        // ServerMonitoring calculates: round(($bytesDiffSent * 8) / $timeDiff / 1000, 2) -> Kbps
+
+        // Wait! VpnClient implementation I did:
+        // $speedUp = (int) ($sentDiff / $timeDiff); // Bytes per second
+
+        // ServerMonitoring implementation:
+        // $speedUp = round(($bytesDiffSent * 8) / $timeDiff / 1000, 2); // Kilobits per second
+
+        // I need to be consistent. 
+        // Frontend expects KB/s (KiloBYTES). 
+        // VpnClient stores BYTES per second. Twig does `speed / 1024` -> KB/s.
+
+        // So I should convert ServerMonitoring stats to Bytes/s before saving to vpn_clients.
+        // ServerMonitoring $stats['speed_up_kbps'] is Kbps.
+        // Bytes/s = Kbps * 1000 / 8.
+
+        $speedUpBytes = (int) ($stats['speed_up_kbps'] * 1000 / 8);
+        $speedDownBytes = (int) ($stats['speed_down_kbps'] * 1000 / 8);
+        $totalSpeedBytes = $speedUpBytes + $speedDownBytes;
+
+        $stmt->execute([
+            $stats['bytes_sent'],
+            $stats['bytes_received'],
+            $speedUpBytes,
+            $speedDownBytes,
+            $totalSpeedBytes,
+            $clientId
+        ]);
     }
 
     /**