using System;
using System.Windows.Forms;
using YourNamespace.Entities;
using YourNamespace.Repositories;

namespace YourNamespace.Forms
{
    public partial class FormPassenger : Form
    {
        private readonly IPassengerRepository _passengerRepository;
        private int? _passengerId;

        public int Id
        {
            set
            {
                try
                {
                    var passenger = _passengerRepository.ReadPassengerById(value);
                    if (passenger == null)
                    {
                        throw new InvalidDataException(nameof(passenger));
                    }
                    textBoxFirstName.Text = passenger.FirstName;
                    textBoxLastName.Text = passenger.LastName;
                    textBoxPassportNumber.Text = passenger.PassportNumber;
                    _passengerId = value;
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message, "Ошибка при получении данных", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
            }
        }

        public FormPassenger(IPassengerRepository passengerRepository)
        {
            InitializeComponent();
            _passengerRepository = passengerRepository ?? throw new ArgumentNullException(nameof(passengerRepository));
        }

        private void ButtonSave_Click(object sender, EventArgs e)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(textBoxFirstName.Text) || string.IsNullOrWhiteSpace(textBoxLastName.Text) || string.IsNullOrWhiteSpace(textBoxPassportNumber.Text))
                {
                    throw new Exception("Имеются незаполненные поля");
                }
                if (_passengerId.HasValue)
                {
                    _passengerRepository.UpdatePassenger(CreatePassenger(_passengerId.Value));
                }
                else
                {
                    _passengerRepository.CreatePassenger(CreatePassenger(0));
                }
                Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Ошибка при сохранении", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void ButtonCancel_Click(object sender, EventArgs e) => Close();

        private Passenger CreatePassenger(int id) => Passenger.CreateEntity(id, textBoxFirstName.Text, textBoxLastName.Text, textBoxPassportNumber.Text);
    }
}