Virtnet.bond/extensions/Servers/Proxmox/Livewire/Network.php

<?php

namespace Paymenter\Extensions\Servers\Proxmox\Livewire;

use Illuminate\Http\Client\RequestException;
use Paymenter\Extensions\Servers\Proxmox\Models\Server;
use Paymenter\Extensions\Servers\Proxmox\Proxmox;

class Network extends Component
{
    public $guestAgentNetworks = [];

    public array $interfaces = [];

    public array $interfaceSelections = [];

    public array $interfaceConfigs = [];

    public array $disconnectedConfigs = [];

    public array $interfaceMultiqueues = [];

    public string $interfaceType = 'virtio';

    public string $selectedInterface = 'net0';

    public bool $canRemoveInterfaces = false;

    public array $original = [];

    public array $interfaceTypeOptions = [
        'virtio' => 'VirtIO (Paravirtualized)',
        'e1000' => 'Intel E1000',
        'e1000e' => 'Intel E1000e',
        'rtl8139' => 'Realtek RTL8139',
        'vmxnet3' => 'VMware vmxnet3',
        'pcnet' => 'AMD PCnet',
    ];

    public function mount(Server $server): void
    {
        parent::mount($server);
        $this->loadGuestAgentNetworks();
        $result = $this->loadVmInterfaces();
        $this->interfaces = $result['interfaces'];
        $this->interfaceConfigs = $result['configs'];
        $this->interfaceSelections = collect($this->interfaces)
            ->map(fn ($meta) => $meta['model'] ?? 'virtio')
            ->toArray();
        $this->interfaceMultiqueues = collect($this->interfaces)
            ->map(fn ($meta) => $meta['queues'] ?? 1)
            ->toArray();
        $this->selectedInterface = array_key_first($this->interfaces) ?? 'net0';
        $this->interfaceType = $this->interfaceSelections[$this->selectedInterface] ?? 'virtio';
        $this->canRemoveInterfaces = count($this->interfaces) > 1;

        // Store original values for synced comparison
        if (empty($this->original)) {
            $this->original = [
                'interfaceSelections' => json_decode(json_encode($this->interfaceSelections), true),
                'interfaceMultiqueues' => json_decode(json_encode($this->interfaceMultiqueues), true),
            ];
        }
    }

    public function getCanUpdateInterfaceProperty(): bool
    {
        return isset($this->interfaces[$this->selectedInterface]['model'], $this->interfaceSelections[$this->selectedInterface])
            && strtolower($this->interfaces[$this->selectedInterface]['model']) !== strtolower($this->interfaceSelections[$this->selectedInterface]);
    }

    protected function loadVmInterfaces(): array
    {
        try {
            $proxmox = new Proxmox;
            $config = $proxmox->request('/nodes/' . $this->server->node->name . '/' . $this->server->node->vmType() . '/' . $this->server->vm_id . '/config')->json()['data'] ?? [];

            $interfaces = [];
            $configs = [];

            foreach ($config as $key => $value) {
                if (!is_string($key) || !str_starts_with($key, 'net')) {
                    continue;
                }

                $configs[$key] = (string) $value;
                $segments = array_filter(array_map('trim', explode(',', (string) $value)));
                $model = 'virtio';
                $mac = null;
                $mtu = null;
                $linkdown = false;
                $queues = 1;

                foreach ($segments as $segment) {
                    if (!str_contains($segment, '=')) {
                        continue;
                    }

                    [$segmentKey, $segmentValue] = array_map('trim', explode('=', $segment, 2));

                    if (in_array(strtolower($segmentKey), array_keys($this->interfaceTypeOptions), true)) {
                        $model = strtolower($segmentKey);
                        $mac = $segmentValue;
                    } elseif (strtolower($segmentKey) === 'bridge') {
                        continue;
                    } elseif (strtolower($segmentKey) === 'mtu') {
                        $mtu = $segmentValue;
                    } elseif (strtolower($segmentKey) === 'link_down' || strtolower($segmentKey) === 'linkdown') {
                        $linkdown = (bool) $segmentValue;
                    } elseif (strtolower($segmentKey) === 'queues') {
                        $queues = max(1, (int) $segmentValue);
                    }
                }

                $interfaces[$key] = [
                    'model' => $model,
                    'mac' => $mac,
                    'mtu' => $mtu,
                    'linkdown' => $linkdown,
                    'queues' => $queues,
                ];
            }

            // Add disconnected devices from stored configs
            foreach ($this->disconnectedConfigs as $key => $disconnectedConfig) {
                if (!isset($interfaces[$key]) && !empty($disconnectedConfig)) {
                    $configs[$key] = $disconnectedConfig;
                    $segments = array_filter(array_map('trim', explode(',', $disconnectedConfig)));
                    $model = 'virtio';
                    $mac = null;
                    $mtu = null;
                    $queues = 1;

                    foreach ($segments as $segment) {
                        if (!str_contains($segment, '=')) {
                            continue;
                        }

                        [$segmentKey, $segmentValue] = array_map('trim', explode('=', $segment, 2));

                        if (in_array(strtolower($segmentKey), array_keys($this->interfaceTypeOptions), true)) {
                            $model = strtolower($segmentKey);
                            $mac = $segmentValue;
                        } elseif (strtolower($segmentKey) === 'bridge') {
                            continue;
                        } elseif (strtolower($segmentKey) === 'mtu') {
                            $mtu = $segmentValue;
                        } elseif (strtolower($segmentKey) === 'queues') {
                            $queues = max(1, (int) $segmentValue);
                        }
                    }

                    $interfaces[$key] = [
                        'model' => $model,
                        'mac' => $mac,
                        'mtu' => $mtu,
                        'linkdown' => true,
                        'queues' => $queues,
                    ];
                }
            }

            if (empty($interfaces)) {
                $interfaces = [
                    'net0' => [
                        'model' => 'virtio',
                        'mac' => null,
                        'mtu' => null,
                        'linkdown' => false,
                        'queues' => 1,
                    ],
                ];
                $configs = ['net0' => ''];
            }

            [$interfaces, $configs] = $this->sortInterfaceArrays($interfaces, $configs);

            return [
                'interfaces' => $interfaces,
                'configs' => $configs,
            ];
        } catch (\Exception $e) {
            $interfaces = [
                'net0' => [
                    'model' => 'virtio',
                    'mac' => null,
                    'mtu' => null,
                    'linkdown' => false,
                    'queues' => 1,
                ],
            ];
            $configs = ['net0' => ''];

            [$interfaces, $configs] = $this->sortInterfaceArrays($interfaces, $configs);

            return [
                'interfaces' => $interfaces,
                'configs' => $configs,
            ];
        }
    }

    protected function loadGuestAgentNetworks()
    {
        try {
            $proxmox = new Proxmox;
            $response = $proxmox->request('/nodes/' . $this->server->node->name . '/' . $this->server->node->vmType() . '/' . $this->server->vm_id . '/agent/network-get-interfaces');
            $json = $response->json();
            
            // Check if the response indicates an error (VM not running, guest agent not available, etc.)
            if (isset($json['data']) && $json['data'] === null) {
                $this->guestAgentNetworks = [];
                return;
            }
            
            $this->guestAgentNetworks = $json['data']['result'] ?? [];
        } catch (RequestException $e) {
            // HTTP error (500, 400, etc.) - VM not running or guest agent unavailable
            $this->guestAgentNetworks = [];
        } catch (\Exception $e) {
            // Any other error
            $this->guestAgentNetworks = [];
        }
    }

    public function getNetworkInterfaceForIp($ipAddress)
    {
        foreach ($this->guestAgentNetworks as $interface) {
            if (isset($interface['ip-addresses'])) {
                foreach ($interface['ip-addresses'] as $ip) {
                    if (isset($ip['ip-address']) && $ip['ip-address'] === $ipAddress->ip) {
                        return $interface;
                    }
                }
            }
        }
        return null;
    }

    public function getAdditionalGuestAgentAddresses()
    {
        $knownIps = $this->server->ipAddresses->pluck('ip')->toArray();
        $additionalAddresses = [];

        foreach ($this->guestAgentNetworks as $interface) {
            if (isset($interface['ip-addresses'])) {
                foreach ($interface['ip-addresses'] as $ip) {
                    if (isset($ip['ip-address']) && !in_array($ip['ip-address'], $knownIps)) {
                        $additionalAddresses[] = [
                            'ip' => $ip['ip-address'],
                            'type' => $ip['ip-address-type'] ?? 'ipv4',
                            'prefix' => $ip['prefix'] ?? null,
                            'interface' => $interface,
                        ];
                    }
                }
            }
        }

        return $additionalAddresses;
    }

    public function getCidrSuffix($ipAddress): ?string
    {
        $netmask = $ipAddress->netmask ?? null;

        if (empty($netmask)) {
            return null;
        }

        if (is_numeric($netmask)) {
            return '/' . (int) $netmask;
        }

        $packed = @inet_pton($netmask);

        if ($packed === false) {
            return null;
        }

        $bits = 0;
        foreach (str_split($packed) as $char) {
            $bits += substr_count(sprintf('%08b', ord($char)), '1');
        }

        return '/' . $bits;
    }

    public function getCpuCores(): int
    {
        try {
            $proxmox = new Proxmox;
            $config = $proxmox->request('/nodes/' . $this->server->node->name . '/' . $this->server->node->vmType() . '/' . $this->server->vm_id . '/config')->json()['data'] ?? [];
            
            // CPU cores can be specified with 'cores' or 'cpus' in Proxmox config
            $cores = (int) ($config['cores'] ?? $config['cpus'] ?? 1);
            
            return max(1, $cores);
        } catch (\Exception $e) {
            // Fallback to 1 if unable to retrieve
            return 1;
        }
    }

    public function isPublicIp($ip, $type = 'ipv4')
    {
        if ($type === 'ipv6' || filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
            // Check for IPv6 private/local addresses
            if ($ip === '::1' || strpos($ip, '::1/') === 0) {
                return false; // localhost
            }
            // Link-local (fe80::/10)
            if (preg_match('/^fe[89ab][0-9a-f]:/i', $ip)) {
                return false;
            }
            // Unique local (fc00::/7) - fc00::/8 and fd00::/8
            if (preg_match('/^fc[0-9a-f]{1,2}:/i', $ip) || preg_match('/^fd[0-9a-f]{1,2}:/i', $ip)) {
                return false;
            }
            // IPv4-mapped IPv6 addresses
            if (strpos($ip, '::ffff:') === 0 || strpos($ip, '::ffff:') !== false) {
                return false;
            }
            return true;
        } else {
            // Check for IPv4 private/local addresses
            $parts = explode('.', $ip);
            if (count($parts) !== 4) {
                return false;
            }
            $first = (int)$parts[0];
            $second = (int)$parts[1];
            
            // 10.0.0.0/8
            if ($first === 10) {
                return false;
            }
            // 172.16.0.0/12
            if ($first === 172 && $second >= 16 && $second <= 31) {
                return false;
            }
            // 192.168.0.0/16
            if ($first === 192 && $second === 168) {
                return false;
            }
            // 127.0.0.0/8 (localhost)
            if ($first === 127) {
                return false;
            }
            // 169.254.0.0/16 (link-local)
            if ($first === 169 && $second === 254) {
                return false;
            }
            return true;
        }
    }

    /**
     * Check if Network Devices settings are synced with the original values.
     */
    public function getNetworkDevicesSyncedProperty(): bool
    {
        // If original hasn't been loaded yet, consider synced
        if (!isset($this->original['interfaceSelections'])) {
            return true;
        }

        $originalInterfaceSelections = isset($this->original['interfaceSelections']) && is_array($this->original['interfaceSelections'])
            ? $this->original['interfaceSelections']
            : [];
        $currentInterfaceSelections = is_array($this->interfaceSelections) ? $this->interfaceSelections : [];

        // Normalize arrays: sort by keys and compare
        ksort($originalInterfaceSelections);
        ksort($currentInterfaceSelections);

        if (count($originalInterfaceSelections) !== count($currentInterfaceSelections)) {
            return false;
        }

        foreach ($originalInterfaceSelections as $key => $value) {
            if (!isset($currentInterfaceSelections[$key]) || $currentInterfaceSelections[$key] !== $value) {
                return false;
            }
        }

        // Also check interfaceMultiqueues
        $originalInterfaceMultiqueues = isset($this->original['interfaceMultiqueues']) && is_array($this->original['interfaceMultiqueues'])
            ? $this->original['interfaceMultiqueues']
            : [];
        $currentInterfaceMultiqueues = is_array($this->interfaceMultiqueues) ? $this->interfaceMultiqueues : [];

        ksort($originalInterfaceMultiqueues);
        ksort($currentInterfaceMultiqueues);

        if (count($originalInterfaceMultiqueues) !== count($currentInterfaceMultiqueues)) {
            return false;
        }

        foreach ($originalInterfaceMultiqueues as $key => $value) {
            if (!isset($currentInterfaceMultiqueues[$key]) || $currentInterfaceMultiqueues[$key] !== $value) {
                return false;
            }
        }

        return true;
    }

    public function render()
    {
        return view('proxmox::network')->layoutData([
            'sidebar' => true,
        ]);
    }

    public function updateInterfaceType(): void
    {
        if (!isset($this->interfaces[$this->selectedInterface], $this->interfaceSelections[$this->selectedInterface])) {
            $this->notify('Select a valid network device.', 'error');

            return;
        }

        $currentInterface = $this->interfaces[$this->selectedInterface];
        $currentModel = strtolower($currentInterface['model'] ?? 'virtio');

        try {
            $targetType = strtolower($this->interfaceSelections[$this->selectedInterface] ?? $currentModel);

            if (!array_key_exists($targetType, $this->interfaceTypeOptions)) {
                $this->notify('Invalid interface type selected.', 'error');

                return;
            }

            $proxmox = new Proxmox;
            $currentConfig = $proxmox->request('/nodes/' . $this->server->node->name . '/' . $this->server->node->vmType() . '/' . $this->server->vm_id . '/config')->json()['data'] ?? [];
            $currentValue = (string) ($currentConfig[$this->selectedInterface] ?? '');

            $segments = array_filter(array_map('trim', explode(',', $currentValue)));

            $macValue = $currentInterface['mac'] ?? null;
            $otherSegments = [];

            foreach ($segments as $segment) {
                if (!str_contains($segment, '=')) {
                    $otherSegments[] = $segment;
                    continue;
                }

                [$key, $value] = array_map('trim', explode('=', $segment, 2));
                $lowerKey = strtolower($key);

                if (array_key_exists($lowerKey, $this->interfaceTypeOptions)) {
                    // This is the existing model definition, capture MAC and skip so it can be replaced.
                    $macValue = $value;
                    continue;
                }

                $otherSegments[] = $key . '=' . $value;
            }

            if ($macValue === null || $macValue === '') {
                $macValue = $this->generateMacAddress();
            }

            $newSegments = [
                $targetType . '=' . $macValue,
            ];

            foreach ($otherSegments as $segment) {
                $newSegments[] = $segment;
            }

            $newValue = implode(',', $newSegments);

            try {
                $proxmox->request(
                    '/nodes/' . $this->server->node->name . '/' . $this->server->node->vmType() . '/' . $this->server->vm_id . '/config',
                    'put',
                    [$this->selectedInterface => $newValue]
                );
            } catch (\Exception $e) {
                // Check if this is a hotplug error (occurs when server is powered on)
                // These errors don't break functionality - the config is still saved
                $errorMessage = strtolower($e->getMessage());
                if (str_contains($errorMessage, 'hotplug') || str_contains($errorMessage, 'hot-unplugging')) {
                    // Suppress the error notification but continue to update the interface state
                    // The configuration is still applied, just with a hotplug warning from Proxmox
                } else {
                    // Re-throw non-hotplug errors to be handled below
                    throw $e;
                }
            }

            $this->interfaces[$this->selectedInterface]['model'] = $targetType;
            $this->interfaces[$this->selectedInterface]['mac'] = $macValue;
            $this->interfaceSelections[$this->selectedInterface] = $targetType;

            // Update original values after successful save
            $this->original = [
                'interfaceSelections' => json_decode(json_encode($this->interfaceSelections), true),
                'interfaceMultiqueues' => json_decode(json_encode($this->interfaceMultiqueues), true),
            ];

            $this->notify(strtoupper($this->selectedInterface) . ' updated to ' . strtoupper($targetType) . '.', 'success');
        } catch (\Exception $e) {
            $this->notify('Failed to update interface type. You must power off the VPS before making this change. Error: ' . $e->getMessage(), 'error');
        }
    }

    protected function generateMacAddress(): string
    {
        $bytes = random_bytes(6);
        $bytes[0] = chr((ord($bytes[0]) | 0x02) & 0xfe); // locally administered, unicast

        return implode(':', array_map(fn ($char) => sprintf('%02x', ord($char)), str_split($bytes)));
    }

    public function removeInterface(?string $name = null): void
    {
        $target = $name ?? $this->selectedInterface;

        if (!$this->canRemoveInterfaces || !isset($this->interfaces[$target])) {
            $this->notify('At least one network device is required.', 'error');

            return;
        }

        // Check VM status - must be stopped to remove interfaces
        if (!$this->status || $this->status->status !== 'stopped') {
            $this->notify('VM must be stopped to remove network devices.', 'error');
            return;
        }

        try {
            $proxmox = new Proxmox;
            $proxmox->request(
                '/nodes/' . $this->server->node->name . '/' . $this->server->node->vmType() . '/' . $this->server->vm_id . '/config',
                'put',
                ['delete' => $target]
            );

            // Refresh interfaces to get updated state
            $this->refreshInterfaces();

            $this->notify('Network device removed successfully.', 'success');
        } catch (\Exception $e) {
            $this->notify('Failed to remove network device: ' . $e->getMessage(), 'error');
        }
    }

    public function refreshInterfaces(): void
    {
        $result = $this->loadVmInterfaces();
        $this->interfaces = $result['interfaces'];
        $this->interfaceConfigs = $result['configs'];
        $this->interfaceSelections = collect($this->interfaces)
            ->map(fn ($meta) => $meta['model'] ?? 'virtio')
            ->toArray();
        $this->interfaceMultiqueues = collect($this->interfaces)
            ->map(fn ($meta) => $meta['queues'] ?? 1)
            ->toArray();
        $this->selectedInterface = array_key_first($this->interfaces) ?? 'net0';
        $this->interfaceType = $this->interfaceSelections[$this->selectedInterface] ?? 'virtio';
        $this->canRemoveInterfaces = count($this->interfaces) > 1;

        // Update original values after refresh
        $this->original = [
            'interfaceSelections' => json_decode(json_encode($this->interfaceSelections), true),
            'interfaceMultiqueues' => json_decode(json_encode($this->interfaceMultiqueues), true),
        ];

        $this->notify('Network interfaces refreshed.', 'success');
    }

    public function queueInterfaceChange(string $name): void
    {
        $this->selectedInterface = $name;
        $this->interfaceSelections[$name] = $this->interfaceSelections[$name] ?? ($this->interfaces[$name]['model'] ?? 'virtio');
        $this->interfaceType = $this->interfaceSelections[$name];
    }

    public function updateMultiqueue(string $name, int $queues): void
    {
        if (!isset($this->interfaces[$name])) {
            $this->notify('Network device not found.', 'error');
            return;
        }

        $cpuCores = $this->getCpuCores();
        $queues = max(1, min($queues, $cpuCores));
        
        $this->interfaceMultiqueues[$name] = $queues;
        
        try {
            $proxmox = new Proxmox;
            $currentConfig = $proxmox->request('/nodes/' . $this->server->node->name . '/' . $this->server->node->vmType() . '/' . $this->server->vm_id . '/config')->json()['data'] ?? [];
            $currentValue = (string) ($currentConfig[$name] ?? '');

            if (empty($currentValue)) {
                $this->notify('Network device configuration not found.', 'error');
                return;
            }

            $segments = array_filter(array_map('trim', explode(',', $currentValue)));
            $newSegments = [];
            $queuesFound = false;

            foreach ($segments as $segment) {
                if (!str_contains($segment, '=')) {
                    $newSegments[] = $segment;
                    continue;
                }

                [$key, $value] = array_map('trim', explode('=', $segment, 2));
                $lowerKey = strtolower($key);

                if ($lowerKey === 'queues') {
                    $queuesFound = true;
                    $newSegments[] = 'queues=' . $queues;
                } else {
                    $newSegments[] = $key . '=' . $value;
                }
            }

            // If queues parameter wasn't found, add it
            if (!$queuesFound) {
                $newSegments[] = 'queues=' . $queues;
            }

            $newValue = implode(',', $newSegments);

            $proxmox->request(
                '/nodes/' . $this->server->node->name . '/' . $this->server->node->vmType() . '/' . $this->server->vm_id . '/config',
                'put',
                [$name => $newValue]
            );

            $this->interfaces[$name]['queues'] = $queues;
            
            // Update original state to reflect the saved change
            if (isset($this->original['interfaceMultiqueues'])) {
                $this->original['interfaceMultiqueues'][$name] = $queues;
            }
            
            $this->notify('Multiqueue updated for ' . strtoupper($name) . ' to ' . $queues . ' queues.', 'success');
        } catch (\Exception $e) {
            $this->notify('Failed to update multiqueue: ' . $e->getMessage(), 'error');
        }
    }

    public function getCanAddInterfaceProperty(): bool
    {
        return count($this->interfaces) < 5;
    }

    protected function getNextInterfaceName(): string
    {
        $existing = array_keys($this->interfaces);
        for ($i = 0; $i < 5; $i++) {
            $name = 'net' . $i;
            if (!in_array($name, $existing, true)) {
                return $name;
            }
        }
        return 'net' . count($existing);
    }

    public function addInterface(): void
    {
        if (!$this->canAddInterface) {
            $this->notify('Maximum of 5 network devices allowed.', 'error');
            return;
        }

        // Check VM status - must be stopped to add interfaces
        if (!$this->status || $this->status->status !== 'stopped') {
            $this->notify('VM must be stopped to add network devices.', 'error');
            return;
        }

        try {
            // Get bridge and MTU from the lowest numbered network device
            $interfaceKeys = array_keys($this->interfaceConfigs);
            if (empty($interfaceKeys)) {
                $this->notify('No existing network devices found.', 'error');
                return;
            }

            // Sort interface keys to find the lowest numbered one (net0, net1, etc.)
            usort($interfaceKeys, function ($a, $b) {
                $numA = (int) preg_replace('/[^0-9]/', '', $a);
                $numB = (int) preg_replace('/[^0-9]/', '', $b);
                return $numA <=> $numB;
            });

            $lowestInterface = $interfaceKeys[0];
            $sourceConfig = $this->interfaceConfigs[$lowestInterface] ?? '';
            $bridge = null;
            $mtu = null;

            if ($sourceConfig) {
                $segments = array_filter(array_map('trim', explode(',', $sourceConfig)));
                foreach ($segments as $segment) {
                    if (str_contains($segment, '=')) {
                        [$key, $value] = array_map('trim', explode('=', $segment, 2));
                        if (strtolower($key) === 'bridge') {
                            $bridge = $value;
                        } elseif (strtolower($key) === 'mtu') {
                            $mtu = $value;
                        }
                    }
                }
            }

            $newInterfaceName = $this->getNextInterfaceName();
            $macAddress = $this->generateMacAddress();
            $newConfig = 'virtio=' . $macAddress;

            if ($bridge) {
                $newConfig .= ',bridge=' . $bridge;
            }

            if ($mtu) {
                $newConfig .= ',mtu=' . $mtu;
            }

            $proxmox = new Proxmox;
            $proxmox->request(
                '/nodes/' . $this->server->node->name . '/' . $this->server->node->vmType() . '/' . $this->server->vm_id . '/config',
                'put',
                [$newInterfaceName => $newConfig]
            );

            // Refresh interfaces to get the new device
            $this->refreshInterfaces();
            $this->selectedInterface = $newInterfaceName;
            $this->notify('Network device ' . strtoupper($newInterfaceName) . ' added successfully.', 'success');
        } catch (\Exception $e) {
            $this->notify('Failed to add network device: ' . $e->getMessage(), 'error');
        }
    }

    public function toggleInterfaceLink(string $name): void
    {
        if (!isset($this->interfaces[$name])) {
            $this->notify('Network device not found.', 'error');
            return;
        }

        try {
            $proxmox = new Proxmox;
            $currentConfig = $proxmox->request('/nodes/' . $this->server->node->name . '/' . $this->server->node->vmType() . '/' . $this->server->vm_id . '/config')->json()['data'] ?? [];
            $currentValue = (string) ($currentConfig[$name] ?? '');

            if (empty($currentValue)) {
                $this->notify('Network device configuration not found.', 'error');
                return;
            }

            $currentLinkdown = $this->interfaces[$name]['linkdown'] ?? false;
            $segments = array_filter(array_map('trim', explode(',', $currentValue)));
            $newSegments = [];
            $linkDownFound = false;

            foreach ($segments as $segment) {
                if (!str_contains($segment, '=')) {
                    $newSegments[] = $segment;
                    continue;
                }

                [$key, $value] = array_map('trim', explode('=', $segment, 2));
                $lowerKey = strtolower($key);

                if ($lowerKey === 'link_down' || $lowerKey === 'linkdown') {
                    $linkDownFound = true;
                    // Remove link_down when connecting
                    if ($currentLinkdown) {
                        continue; // Skip it to remove
                    }
                    // Keep it when disconnecting (already has it)
                    $newSegments[] = 'link_down=1';
                } elseif ($lowerKey === 'bridge') {
                    $newSegments[] = $key . '=' . $value;
                    // If we need to add link_down (disconnecting) and haven't found it yet, add it after bridge
                    if (!$currentLinkdown && !$linkDownFound) {
                        $newSegments[] = 'link_down=1';
                        $linkDownFound = true;
                    }
                } elseif ($lowerKey === 'mtu') {
                    // If we need to add link_down and haven't yet, add it before mtu
                    if (!$currentLinkdown && !$linkDownFound) {
                        $newSegments[] = 'link_down=1';
                        $linkDownFound = true;
                    }
                    $newSegments[] = $key . '=' . $value;
                } else {
                    $newSegments[] = $key . '=' . $value;
                }
            }

            // If we need to add link_down and it still wasn't added (no bridge or mtu found)
            if (!$currentLinkdown && !$linkDownFound) {
                $newSegments[] = 'link_down=1';
            }

            $newValue = implode(',', $newSegments);

            $proxmox->request(
                '/nodes/' . $this->server->node->name . '/' . $this->server->node->vmType() . '/' . $this->server->vm_id . '/config',
                'put',
                [$name => $newValue]
            );

            // Refresh interfaces to get updated state
            $this->refreshInterfaces();
            $status = $currentLinkdown ? 'connected' : 'disconnected';
            $this->notify('Network device ' . strtoupper($name) . ' ' . $status . ' successfully.', 'success');
        } catch (\Exception $e) {
            $this->notify('Failed to toggle network device: ' . $e->getMessage(), 'error');
        }
    }

    protected function sortInterfaceArrays(array $interfaces, array $configs): array
    {
        $keys = array_keys($interfaces);

        usort($keys, function ($a, $b) {
            return $this->interfaceIndexFromKey($a) <=> $this->interfaceIndexFromKey($b);
        });

        $sortedInterfaces = [];
        $sortedConfigs = [];

        foreach ($keys as $key) {
            $sortedInterfaces[$key] = $interfaces[$key];
            $sortedConfigs[$key] = $configs[$key] ?? '';
        }

        return [$sortedInterfaces, $sortedConfigs];
    }

    protected function interfaceIndexFromKey(string $key): int
    {
        if (preg_match('/(\d+)/', $key, $matches)) {
            return (int) $matches[1];
        }

        return PHP_INT_MAX;
    }
}