GES_PAC

using GES_PAC.Model;

using GES_PAC.View;

using System.Collections.ObjectModel;

using System.Windows.Input;

namespace GES_PAC.ViewModel

{

    [QueryProperty(nameof(ChamberId), "chamberId")]

    public class CreateMeasureViewModel : BaseViewModel

    {

        #region Attributs

        private int _chamberId;

        private double? _conc_o2;

        private double? _conc_co2;

        private double? _conc_ch4;

        private bool _isFormValid;

        #endregion

        #region Commandes

        public ICommand CreateMeasureCommand { get; }

        #endregion

        #region Propriétés

        public int ChamberId

        {

            get => _chamberId;

            set

            {

                _chamberId = value;

                OnPropertyChanged();

                OnPropertyChanged(nameof(Titre));

            }

        }

        public double? ConcO2

        {

            get => _conc_o2;

            set

            {

                _conc_o2 = value;

                OnPropertyChanged();

                ValidateForm();

            }

        }

        public double? ConcCO2

        {

            get => _conc_co2;

            set

            {

                _conc_co2 = value;

                OnPropertyChanged();

                ValidateForm();

            }

        }

        public double? ConcCH4

        {

            get => _conc_ch4;

            set

            {

                _conc_ch4 = value;

                OnPropertyChanged();

                ValidateForm();

            }

        }

        public bool IsFormValid

        {

            get => _isFormValid;

            set

            {

                _isFormValid = value;

                OnPropertyChanged();

            }

        }

        public bool ConcO2Error { get; private set; } = true;

        public bool ConcCO2Error { get; private set; } = true;

        public bool ConcCH4Error { get; private set; } = true;

        public string Titre => $"Mesures chambre {ChamberId}";

        #endregion

        #region Constructeurs

        public CreateMeasureViewModel()

        {

            CreateMeasureCommand = new Command(async () => await CreateMeasure());

        }

        #endregion

        #region Méthodes

        private async Task CreateMeasure()

        {

            IsBusy = true;

            var date = DateTime.Now;

            var newMeasure = new Mesure(date, ConcO2 ?? 0, ConcCO2 ?? 0, ConcCH4 ?? 0);

            var phaseCalibration = JourneeViewModel.Instance.GetCurrentPhase();

            JourneeViewModel.Instance.AddMeasureToCurrentSet(newMeasure, ChamberId);

            await Shell.Current.GoToAsync(nameof(ChambersView));

            IsBusy = false;

        }

        private void ValidateForm()

        {

            ConcO2Error = ConcO2 == null;

            ConcCO2Error = ConcCO2 == null;

            ConcCH4Error = ConcCH4 == null;

            OnPropertyChanged(nameof(ConcO2Error));

            OnPropertyChanged(nameof(ConcCO2Error));

            OnPropertyChanged(nameof(ConcCH4Error));

            IsFormValid = !ConcO2Error && !ConcCO2Error && !ConcCH4Error;

            (CreateMeasureCommand as Command)?.ChangeCanExecute();

        }

        #endregion

    }

}