#!/usr/bin/env php
<?php
/**
 * AVM Scanner Background Script
 * Run with: php scripts/avm_scanner.php
 */

// Bootstrap the application
require_once(__DIR__ . "/../config/config.php");

define('FRONKDB_SQLDEBUG', false);
error_reporting(E_ALL & ~(E_NOTICE | E_STRICT | E_DEPRECATED));

require_once(LIBDIR . "/mvcfronk/mfRouter/mfRouter.php");
require_once(LIBDIR . "/mvcfronk/mfBase/mfBaseModel.php");
require_once(LIBDIR . "/mvcfronk/mfBase/mfBaseController.php");

$avmPrefixes = [
    '00:04:0E', '00:15:0C', '00:1A:4F', '00:1C:4A', '00:1F:3F', '00:24:FE',
    '04:B4:FE', '08:96:D7', '08:B6:57', '0C:72:74',
    '1C:ED:6F',
    '24:65:11', '2C:3A:FD', '2C:91:AB',
    '34:31:C4', '34:81:C4', '34:E1:A9', '38:10:D5', '3C:37:12', '3C:A6:2F',
    '44:4E:6D', '48:5D:35',
    '50:E6:36', '5C:49:79',
    '60:B5:8D',
    '74:42:7F', '7C:FF:4D',
    '80:23:95',
    '98:9B:CB', '98:A9:65', '9C:C7:A6',
    'B0:F2:08', 'B4:FC:7D', 'BC:05:43',
    'C0:25:06', 'C8:0E:14', 'CC:CE:1E',
    'D0:12:CB', 'D4:24:DD', 'DC:15:C8', 'DC:39:6F',
    'E0:08:55', 'E0:28:6D', 'E8:DF:70',
    'F0:B0:14'
];

function getStatePath() {
    return dirname(__DIR__) . '/files/avm_scanner.json';
}

function loadState() {
    $path = getStatePath();
    if (file_exists($path)) {
        $content = file_get_contents($path);
        $state = json_decode($content, true);
        if (is_array($state)) return $state;
    }
    return [
        'scanning' => false,
        'stopRequested' => false,
        'progress' => ['current' => 0, 'total' => 0],
        'currentDevice' => null,
        'startedAt' => null,
        'startedBy' => null,
        'lastUpdated' => date('c'),
        'devices' => []
    ];
}

function saveState($state) {
    $dir = dirname(getStatePath());
    if (!is_dir($dir)) @mkdir($dir, 0777, true);
    $state['lastUpdated'] = date('c');
    file_put_contents(getStatePath(), json_encode($state, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE));
}

function isAvmMac($mac) {
    global $avmPrefixes;
    $mac = strtoupper(trim($mac));
    $prefix = substr($mac, 0, 8);
    return in_array($prefix, $avmPrefixes);
}

function fetchRadiusUsers() {
    $url = "http://radius.xinon.at/api.php";
    $opts = [
        "http" => [
            "method" => "GET",
            "header" => "Authorization: Basic " . base64_encode("admin:saveman"),
            "timeout" => 120
        ]
    ];
    $context = stream_context_create($opts);
    $response = @file_get_contents($url, false, $context);
    if ($response === false) return [];
    $data = json_decode($response, true);
    return is_array($data) ? $data : [];
}

function fetchRadacct($username) {
    $url = "http://radius.xinon.at/api.php?action2=fetchRadacct&username=" . urlencode($username);
    $opts = [
        "http" => [
            "method" => "GET",
            "header" => "Authorization: Basic " . base64_encode("admin:saveman"),
            "timeout" => 10
        ]
    ];
    $context = stream_context_create($opts);
    $response = @file_get_contents($url, false, $context);
    if ($response === false) return null;
    $data = json_decode($response, true);
    return is_array($data) ? $data : null;
}

function detectFritzPort($ip) {
    $url = "http://acs.xinon.at:5000/detect-port";
    $data = json_encode(['fritz_ip' => $ip, 'timeout' => 3]);
    $opts = [
        "http" => [
            "method" => "POST",
            "header" => "Content-Type: application/json\r\nContent-Length: " . strlen($data) . "\r\n",
            "content" => $data,
            "timeout" => 20
        ]
    ];
    $context = stream_context_create($opts);
    $response = @file_get_contents($url, false, $context);
    if ($response) {
        $json = json_decode($response, true);
        if ($json && $json['success'] && isset($json['port'])) {
            return (int)$json['port'];
        }
    }
    return null;
}

function detectFritzDevice($ip, $port) {
    $url = "http://acs.xinon.at:5000/detect-device";
    $data = json_encode(['fritz_ip' => $ip, 'fritz_port' => (string)$port]);
    $opts = [
        "http" => [
            "method" => "POST",
            "header" => "Content-Type: application/json\r\nContent-Length: " . strlen($data) . "\r\n",
            "content" => $data,
            "timeout" => 20
        ]
    ];
    $context = stream_context_create($opts);
    $response = @file_get_contents($url, false, $context);
    if ($response) {
        $json = json_decode($response, true);
        if ($json && $json['success'] && isset($json['device'])) {
            return $json['device'];
        }
    }
    return null;
}

// Main execution
echo "AVM Scanner starting...\n";

$state = loadState();
if ($state['scanning']) {
    echo "Scan already running, exiting.\n";
    exit(1);
}

// Fetch all users
echo "Fetching users from RADIUS API...\n";
$users = fetchRadiusUsers();
echo "Got " . count($users) . " users from API\n";

// Filter AVM users
$avmUsers = [];
foreach ($users as $user) {
    $username = trim($user['username'] ?? '');
    if (!preg_match('/^([0-9A-Fa-f]{2}:){5}[0-9A-Fa-f]{2}$/i', $username)) continue;
    if (!isAvmMac($username)) continue;
    $info = $user['info'] ?? '';
    if (stripos($info, 'ACS') !== false) continue;
    $user['username'] = $username;
    $avmUsers[] = $user;
}
echo "Found " . count($avmUsers) . " AVM users to scan\n";

if (count($avmUsers) === 0) {
    echo "No users to scan, exiting.\n";
    exit(0);
}

// Preserve existing device data (for erledigt status)
$existingDevices = [];
foreach ($state['devices'] ?? [] as $dev) {
    $existingDevices[$dev['mac']] = $dev;
}

// Initialize scan state
$state['scanning'] = true;
$state['stopRequested'] = false;
$state['progress'] = ['current' => 0, 'total' => count($avmUsers)];
$state['startedAt'] = date('c');
$state['startedBy'] = 'script';
saveState($state);

// Process each user
foreach ($avmUsers as $idx => $user) {
    // Check for stop request
    $state = loadState();
    if ($state['stopRequested']) {
        echo "Stop requested, terminating.\n";
        $state['scanning'] = false;
        $state['stopRequested'] = false;
        $state['currentDevice'] = null;
        saveState($state);
        exit(0);
    }

    $mac = $user['username'];
    $customerId = $user['customerNumber'] ?? '';
    $customerName = $user['info'] ?? '';

    echo "[" . ($idx + 1) . "/" . count($avmUsers) . "] Scanning $mac...\n";

    $state['progress']['current'] = $idx + 1;
    $state['currentDevice'] = ['mac' => $mac, 'ip' => null];
    saveState($state);

    // Fetch IP from radacct
    $radacct = fetchRadacct($mac);
    $ip = $radacct['ip'] ?? null;

    $deviceResult = [
        'mac' => $mac,
        'ip' => $ip,
        'customerId' => $customerId,
        'customerName' => $customerName,
        'deviceType' => null,
        'oem' => null,
        'port' => null,
        'isRepeater' => false,
        'isGateway' => false,
        'erledigt' => $existingDevices[$mac]['erledigt'] ?? false,
        'scannedAt' => date('c'),
        'error' => null
    ];

    if ($ip) {
        echo "  IP: $ip - detecting port...\n";
        $port = detectFritzPort($ip);
        if ($port) {
            echo "  Port: $port - detecting device...\n";
            $deviceResult['port'] = $port;
            $deviceInfo = detectFritzDevice($ip, $port);
            if ($deviceInfo) {
                $deviceResult['deviceType'] = $deviceInfo['product_name'] ?? null;
                $deviceResult['oem'] = $deviceInfo['oem'] ?? null;
                $deviceResult['isRepeater'] = $deviceInfo['is_repeater'] ?? false;
                $deviceResult['isGateway'] = $deviceInfo['is_gateway'] ?? false;
                echo "  Device: " . ($deviceResult['deviceType'] ?? 'unknown') . "\n";
            } else {
                echo "  Could not detect device info\n";
            }
        } else {
            $deviceResult['error'] = 'No port detected';
            echo "  No port detected\n";
        }
    } else {
        $deviceResult['error'] = 'No IP address';
        echo "  No IP address\n";
    }

    $existingDevices[$mac] = $deviceResult;
    $state['devices'] = array_values($existingDevices);
    saveState($state);

    // Small delay between requests
    usleep(50000);
}

// Done
$state = loadState();
$state['scanning'] = false;
$state['currentDevice'] = null;
saveState($state);

echo "Scan complete!\n";