MainViewModel.cs

using System.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using NeuroAccessMaui.Services;
using NeuroAccessMaui.Services.Contacts;
using NeuroAccessMaui.UI.Pages.Identity.ViewIdentity;
 
namespace NeuroAccessMaui.UI.Pages.Main
{
    public partial class MainViewModel : QrXmppViewModel
    {
        public MainViewModel()
            : base()
        {
        }
 
        public override Task<string> Title => Task.FromResult(ContactInfo.GetFriendlyName(ServiceRef.TagProfile.LegalIdentity));
 
        protected override void OnPropertyChanged(PropertyChangedEventArgs e)
        {
            base.OnPropertyChanged(e);
 
            switch (e.PropertyName)
            {
                case nameof(this.IsConnected):
                    this.ScanQrCodeCommand.NotifyCanExecuteChanged();
                    break;
            }
        }
 
        public bool CanScanQrCode => this.IsConnected;
 
        [RelayCommand(CanExecute = nameof(CanScanQrCode))]
        private async Task ScanQrCode()
        {
            await Services.UI.QR.QrCode.ScanQrCodeAndHandleResult();
        }
 
        [RelayCommand]
        public static async Task ViewId()
        {
            try
            {
                if(await App.AuthenticateUser(AuthenticationPurpose.ViewId))
                    await ServiceRef.UiService.GoToAsync(nameof(ViewIdentityPage));
            }
            catch (Exception ex)
            {
                ServiceRef.LogService.LogException(ex);
            }
        }
    }
}