GES_PAC

using GES_PAC.Model;

using System.Windows.Input;

namespace GES_PAC.ViewModel

{

    public class CreatePersonViewModel : BaseViewModel

    {

        private string _nom;

        public string Nom

        {

            get => _nom;

            set

            {

                _nom = value;

                OnPropertyChanged();

                ValidateForm();

            }

        }

        private string _prenom;

        public string Prenom

        {

            get => _prenom;

            set

            {

                _prenom = value;

                OnPropertyChanged();

                ValidateForm();

            }

        }

        private string _email;

        public string Email

        {

            get => _email;

            set

            {

                _email = value;

                OnPropertyChanged();

                ValidateForm();

            }

        }

        private bool _isFormValid;

        public bool IsFormValid

        {

            get => _isFormValid;

            set

            {

                _isFormValid = value;

                OnPropertyChanged();

            }

        }

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

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

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

        public ICommand ReturnCommand { get; }

        public ICommand CreatePersonCommand { get; }

        public CreatePersonViewModel()

        {

            ReturnCommand = new Command(async () => await Return());

            CreatePersonCommand = new Command(async () => await CreatePerson());

        }

        private async Task Return()

        {

            await Shell.Current.GoToAsync("..");

        }

        private async Task CreatePerson()

        {

            var newTechnician = new Personne(Nom, Prenom, Email);

            PersonViewModel.Instance.Persons.Add(newTechnician);

            await Shell.Current.GoToAsync("..");

        }

        private void ValidateForm()

        {

            NomError = string.IsNullOrWhiteSpace(Nom) || Nom.Length < 3;

            PrenomError = string.IsNullOrWhiteSpace(Prenom) || Prenom.Length < 3;

            EmailError = string.IsNullOrWhiteSpace(Email) || Email.Length < 10;

            OnPropertyChanged(nameof(NomError));

            OnPropertyChanged(nameof(PrenomError));

            OnPropertyChanged(nameof(EmailError));

            IsFormValid = !NomError && !PrenomError && !EmailError;

            (CreatePersonCommand as Command)?.ChangeCanExecute();

        }

    }

}