GES_PAC

using GES_PAC.Model;

using GES_PAC.View;

using System.Windows.Input;

namespace GES_PAC.ViewModel

{

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

    public class EnterAnimalViewModel : BaseViewModel

    {

        #region Attributs

        private int _chamberId;

        private string _numrfid;

        private double? _poids;

        private DateOnly? _datePesee;

        private bool _isFormValid;

        #endregion

        #region Commandes

        public ICommand EnterAnimalCommand { get; }

        public ICommand LoadWeightCommand { get; }

        #endregion

        #region Propriétés

        public int ChamberId

        {

            get => _chamberId;

            set

            {

                _chamberId = value;

                OnPropertyChanged();

                OnPropertyChanged(nameof(Titre));

            }

        }

        public string NumRFID

        {

            get => _numrfid;

            set

            {

                _numrfid = value;

                OnPropertyChanged();

                ValidateForm();

            }

        }

        public double? Poids

        {

            get => _poids;

            set

            {

                _poids = value;

                OnPropertyChanged();

                ValidateForm();

            }

        }

        public DateOnly? DatePesee

        {

            get => _datePesee;

            set

            {

                _datePesee = value;

                OnPropertyChanged();

                ValidateForm();

            }

        }

        public bool IsFormValid

        {

            get => _isFormValid;

            set

            {

                _isFormValid = value;

                OnPropertyChanged();

            }

        }

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

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

        #endregion

        #region Constructeurs

        public EnterAnimalViewModel()

        {

            EnterAnimalCommand = new Command(async () => await EnterAnimal());

            LoadWeightCommand = new Command(async () => await LoadWeight());

        }

        #endregion

        #region Méthodes

        private async Task EnterAnimal()

        {

            if (IsBusy) return;

            IsBusy = true;

            var date = DateTime.Now;

            var journeeActuelle = JourneeViewModel.Instance.GetCurrentDay();

            var newAnimalSet = new SerieAnimal(ChamberId, Poids ?? 0, date, NumRFID);

            journeeActuelle.GetCurrentSet().AddSerieAnimal(newAnimalSet);

            App.Db.SerieAnimal.Add(newAnimalSet);

            await App.Db.SaveChangesAsync();

            await Shell.Current.GoToAsync($"{nameof(CreateMeasureView)}?chamberId={ChamberId}");

            IsBusy = false;

        }

        private void ValidateForm()

        {

            NumRFIDError = NumRFID == null || NumRFID.Length < 5;

            OnPropertyChanged(nameof(NumRFIDError));

            IsFormValid = !NumRFIDError;

            (EnterAnimalCommand as Command)?.ChangeCanExecute();

        }

        async public Task LoadWeight()

        {

            var animal = App.Db.Animal.FirstOrDefault(a => a.Rfid.EndsWith(NumRFID));

            NumRFID = animal?.Rfid ?? "";

            Poids = animal?.Poids / 1000;

            DatePesee = DateOnly.FromDateTime(animal?.DateDernierePesee ?? default);

        }

        #endregion

    }

}