using System;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;

using Windows.Devices.Bluetooth;
using Windows.Devices.Bluetooth.GenericAttributeProfile;
using System.Diagnostics;
using System.Threading.Tasks;


// The Blank Page item template is documented at https://go.microsoft.com/fwlink/?LinkId=402352&clcid=0x409

namespace App7
{
  /// <summary>
  /// An empty page that can be used on its own or navigated to within a Frame.
  /// </summary>
  public sealed partial class MainPage : Page
  {
    public MainPage()
    {
      this.InitializeComponent();
    }

    BluetoothLEDevice bluetoothLeDevice1 = null;
    BluetoothLEDevice bluetoothLeDevice2 = null;

    private async void Button1_Click(object sender, RoutedEventArgs e)
    {

      bluetoothLeDevice1?.Dispose();
      bluetoothLeDevice1 = null;

      await  ConnectExplore(bluetoothLeDevice1, "90:fd:9f:6e:14:81");

    }

    private async void Button2_Click(object sender, RoutedEventArgs e)
    {

      bluetoothLeDevice2?.Dispose();
      bluetoothLeDevice2 = null;

      await ConnectExplore(bluetoothLeDevice2, "90:fd:9f:4c:b0:c6");

    }

    async Task ConnectExplore(BluetoothLEDevice bleDevice, string macAddress)
    {

      string mac_addr_clean = macAddress.Replace(":", "");
      ulong mac_addr_num = Convert.ToUInt64(mac_addr_clean, 16);

      bleDevice = await BluetoothLEDevice.FromBluetoothAddressAsync(mac_addr_num);
      if (bleDevice != null)
      {
        Debug.WriteLine($"{DateTime.Now:HH:mm:ss.f} -> {macAddress} \t{bleDevice.ConnectionStatus} \t{bleDevice.DeviceAccessInformation.CurrentStatus} \t{bleDevice.BluetoothDeviceId.Id}");

        var gattResult = await bleDevice.GetGattServicesAsync();

        Debug.WriteLine($"{DateTime.Now:HH:mm:ss.f} -> {macAddress} bleDevice.GetGattServicesAsync gattResult {gattResult.Status}");
        if (gattResult.Status == GattCommunicationStatus.Success)
        {
          foreach (var service in gattResult.Services)
          {
            Debug.WriteLine("service uuid: " + service.Uuid.ToString());
          }
        }

      }
      else
      {
        Debug.WriteLine($"{DateTime.Now} -> {macAddress} FromBluetoothAddressAsync return null");

      }
    }
  }
}