using ProjectFuel.Entities;
using ProjectFuel.Entities.Enums;
using ProjectFuel.Repositories;
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;

namespace ProjectFuel.Forms_
{
    public partial class FormFuel : Form
    {
        private readonly IFuelRepository _fuelRepository;

        private int? _fuelId;
        public int Id
        {
            set
            {
                try
                {
                    var fuel = _fuelRepository.ReadFuelByID(value);
                    if (fuel == null)
                        throw new InvalidOperationException(nameof(fuel));

                    comboBoxFuelType.SelectedItem = fuel.Fuel_Type;
                    numericUpDownPrice.Value = (decimal)fuel.Price_Per_Liter;
                    numericUpDownAmount.Value = (decimal)fuel.Amount;

                    _fuelId = value;
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message, "Ошибка при получении данных", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
            }
        }
        public FormFuel(IFuelRepository fuelRepository)
        {
            InitializeComponent();
            _fuelRepository = fuelRepository ??
                throw new ArgumentNullException(nameof(fuelRepository));

            comboBoxFuelType.DataSource = Enum.GetValues(typeof(Fuel_Type));
        }
        private void ButtonFuelSave_Click(object sender, EventArgs e)
        {
            try
            {
                if (comboBoxFuelType.SelectedIndex < 1)
                    throw new Exception("Имеются незаполненные поля");

                if (_fuelId.HasValue)
                    _fuelRepository.UpdateFuel(CreateFuel(_fuelId.Value));
                else
                    _fuelRepository.CreateFuel(CreateFuel(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 Fuel CreateFuel(int id)
        {
            return Fuel.CreateEntity(id, (Fuel_Type)comboBoxFuelType.SelectedItem!, (float)numericUpDownPrice.Value, (float)numericUpDownAmount.Value);
        }
    }
}