using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using ProjectAirline.Entities.Enums;
using ProjectAirline.Entities;
using ProjectAirline.Repositories;


namespace ProjectAirline.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));
                }
                foreach (FoodPreferences elem in Enum.GetValues(typeof(FoodPreferences)))
                {
                    if ((elem & passenger.FoodPreferences) != 0)
                    {
                        checkedListBoxType.SetItemChecked(checkedListBoxType.Items.IndexOf(
                        elem), true);
                    }
                }


                textBoxFirstname.Text = passenger.FirstName;
                textBoxLastname.Text = passenger.LastName;
                dateTimePickerBorn.Value = passenger.DateBirth;
                _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));

        foreach (var elem in Enum.GetValues(typeof(FoodPreferences)))
        {
            checkedListBoxType.Items.Add(elem);
        }
    }

    private void ButtonSave_Click(object sender, EventArgs e)
    {
        try
        {
            if (checkedListBoxType.CheckedItems.Count == 0 ||
            string.IsNullOrWhiteSpace(textBoxFirstname.Text) ||
            string.IsNullOrWhiteSpace(textBoxLastname.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)
    {
        FoodPreferences foodPreferences = FoodPreferences.None;
        foreach (var elem in checkedListBoxType.CheckedItems)
        {
            foodPreferences |= (FoodPreferences)elem;
        }

        return Passenger.CreateEntity(id, foodPreferences, textBoxFirstname.Text, textBoxLastname.Text);
    }
}