using Microsoft.Win32;

namespace RmmAgent.Services;

public class MachineIdProvider
{
    private string? _cached;

    public string GetMachineId()
    {
        if (_cached != null) return _cached;

        try
        {
            using var key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Cryptography");
            var guid = key?.GetValue("MachineGuid") as string;
            if (!string.IsNullOrEmpty(guid))
            {
                _cached = guid;
                return _cached;
            }
        }
        catch { }

        _cached = $"{Environment.MachineName}-{Environment.UserDomainName}";
        return _cached;
    }
}