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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Documents;
using Tango.Core;
using Tango.Core.Commands;
using Tango.Logging;
using Tango.Stubs;

namespace Tango.MobileEM.UI.ViewModels
{
    public class StubViewVM : ExtendedObject
    {
        private bool _running;

        public RelayCommand RunCommand { get; set; }
        public RelayCommand CancelCommand { get; set; }
        public RelayCommand ClearCommand { get; set; }
        public StubBase Stub { get; set; }
        public AvailableStub AvailableStub { get; set; }

        private String _response;

        public String Response
        {
            get { return _response; }
            set { _response = value; RaisePropertyChanged(nameof(Response)); }
        }


        public StubViewVM(AvailableStub availableStub, StubBase stub)
        {
            AvailableStub = availableStub;
            Stub = stub;
            RunCommand = new RelayCommand(Run,(x) => !_running);
            CancelCommand = new RelayCommand(Cancel,(x) => _running);
            ClearCommand = new RelayCommand(() => Response = String.Empty);
        }

        private async void Run()
        {
            _running = true;
            InvalidateRelayCommands();
            var result = await Stub.Run((response) => 
            {
                _running = false;
                Response += response + Environment.NewLine;
                InvalidateRelayCommands();

            });

            Response += result + Environment.NewLine;

            _running = false;
            InvalidateRelayCommands();
        }

        private void Cancel()
        {

        }
    }
}