// --- AUTOMATED NODE BACKGROUND SERVICE GUARDIAN ---
$socketFile = '/home/skalkppo/system.sk-aluminium.net/window-door-fabrication/services/node-server/server.sock';
$nodeAppScript = '/home/skalkppo/system.sk-aluminium.net/window-door-fabrication/services/node-server/app.js';
$appDir = dirname($nodeAppScript);

// Only attempt execution if the socket file is missing AND shell commands are enabled on the host
if (!file_exists($socketFile) && function_exists('exec')) {
    
    // 1. Resolve the default Node binary location
    $nodeBinary = file_exists('/usr/local/bin/node') ? '/usr/local/bin/node' : 'node';
    
    // 2. Override with the isolated cPanel Virtual Environment Node binary path if present
    $venvPath = '/home/skalkppo/nodevenv/system.sk-aluminium.net/window-door-fabrication/services/node-server/18/bin';
    if (is_dir($venvPath)) {
        $nodeBinary = $venvPath . '/node';
    }

    // 3. Clear out broken or stale socket references left over from prior process crashes
    if (file_exists($socketFile) || is_link($socketFile)) {
        @unlink($socketFile);
    }

    // 4. Compile and run the asynchronous background process shell payload
    $logFile = $appDir . '/native_boot_error.log';
    $command = sprintf(
        'cd %s && NODE_ENV=production PATH=%s:$PATH %s %s >> %s 2>&1 &',
        escapeshellarg($appDir),
        escapeshellarg($venvPath),
        escapeshellarg($nodeBinary),
        escapeshellarg($nodeAppScript),
        escapeshellarg($logFile)
    );
    
    @exec($command);
    
    // 5. Provide a 600ms lifecycle margin for the runtime loop to compile and bind the socket
    usleep(600000);
}
// ---------------------------------------------------