using AbstractShopContracts.BindingModels;
using AbstractShopContracts.BusinessLogicsContracts;
using AbstractShopContracts.SearchModels;
using Microsoft.Extensions.Logging;
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 FoodOrdersView
{
    public partial class FormCreateOrder : Form
    {
        private readonly ILogger _logger;
        private readonly IFoodLogic _logicW;
        private readonly IOrderLogic _logicO;

        public FormCreateOrder(ILogger<FormCreateOrder> logger, IFoodLogic logicF, IOrderLogic logicO)
        {
            InitializeComponent();
            _logger = logger;
            _logicW = logicF;
            _logicO = logicO;
            LoadData();
        }

        private void FormCreateOrder_Load(object sender, EventArgs e)
        {
            LoadData();
        }

        private void LoadData()
        {
            _logger.LogInformation("Загрузка изделий для заказа");

            try
            {
                var list = _logicW.ReadList(null);
                if (list != null)
                {
                    FoodComboBox.DisplayMember = "FoodName";
                    FoodComboBox.ValueMember = "Id";
                    FoodComboBox.DataSource = list;
                    FoodComboBox.SelectedItem = null;
                }

            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Ошибка загрузки списка изделий");
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void CalcSum()
        {
            if (FoodComboBox.SelectedValue != null && !string.IsNullOrEmpty(CountTextBox.Text))
            {
                try
                {
                    int id = Convert.ToInt32(FoodComboBox.SelectedValue);

                    var product = _logicW.ReadElement(new FoodSearchModel
                    {
                        Id = id
                    });

                    int count = Convert.ToInt32(CountTextBox.Text);
                    SumTextBox.Text = Math.Round(count * (product?.Price ?? 0), 2).ToString();
                    _logger.LogInformation("Расчет суммы заказа");
                }
                catch (Exception ex)
                {
                    _logger.LogError(ex, "Ошибка расчета суммы заказа");
                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
        }

        private void CountTextBox_TextChanged(object sender, EventArgs e)
        {
            CalcSum();
        }

        private void FoodComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            CalcSum();
        }

        private void SaveButton_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(CountTextBox.Text))
            {
                MessageBox.Show("Заполните поле Количество", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            if (FoodComboBox.SelectedValue == null)
            {
                MessageBox.Show("Выберите изделие", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            _logger.LogInformation("Создание заказа");

            try
            {
                var operationResult = _logicO.CreateOrder(new OrderBindingModel
                {
                    FoodId = Convert.ToInt32(FoodComboBox.SelectedValue),
                    FoodName = FoodComboBox.Text,
                    Count = Convert.ToInt32(CountTextBox.Text),
                    Sum = Convert.ToDouble(SumTextBox.Text)
                });

                if (!operationResult)
                {
                    throw new Exception("Ошибка при создании заказа. Дополнительная информация в логах.");
                }

                MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
                DialogResult = DialogResult.OK;
                Close();
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Ошибка создания заказа");
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void ButtonCancel_Click(object sender, EventArgs e)
        {
            DialogResult = DialogResult.Cancel;
            Close();
        }

    }
}