using System;
using System.Linq;
using Microsoft.Win32;

namespace AmebaPro3_ControlPanel.Services.Uart;

public static class PortDiscovery
{
    public static string[] GetPorts()
    {
        try
        {
            using var key = Registry.LocalMachine.OpenSubKey(@"HARDWARE\\DEVICEMAP\\SERIALCOMM");
            if (key == null)
            {
                return Array.Empty<string>();
            }

            var ports = key.GetValueNames()
                .Select(name => key.GetValue(name))
                .OfType<string>()
                .Where(value => !string.IsNullOrWhiteSpace(value))
                .Distinct(StringComparer.OrdinalIgnoreCase)
                .OrderBy(value => value, StringComparer.OrdinalIgnoreCase)
                .ToArray();

            return ports;
        }
        catch
        {
            return Array.Empty<string>();
        }
    }
}