using FurnitureAssemblyContracts.BindingModels;
using FurnitureAssemblyContracts.BusinessLogicsContracts;
using FurnitureAssemblyContracts.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 FurnitureAssemblyView
{
	public partial class FormCreateOrder : Form
	{
		private readonly ILogger _logger;

		private readonly IFurnitureLogic _logicFurniture;

		private readonly IOrderLogic _logicOrder;

		private readonly IClientLogic _logicClient;

		public FormCreateOrder(ILogger<FormCreateOrder> logger, IFurnitureLogic logicFurniture, IOrderLogic logicOrder, IClientLogic logicClient)
		{
			InitializeComponent();

			_logger = logger;
            _logicFurniture = logicFurniture;
            _logicOrder = logicOrder;
            _logicClient = logicClient;
		}

		private void FormCreateOrder_Load(object sender, EventArgs e)
		{
			_logger.LogInformation("Загрузка изделий для заказа");

			try
			{
				var list = _logicFurniture.ReadList(null);
				var listClients = _logicClient.ReadList(null);

				if (list != null)
				{
					comboBoxFurniture.DisplayMember = "FurnitureName";
                    comboBoxFurniture.ValueMember = "Id";
                    comboBoxFurniture.DataSource = list;
                    comboBoxFurniture.SelectedItem = null;
				}

				if(listClients != null)
				{
					comboBoxClient.DisplayMember = "ClientFIO";
					comboBoxClient.ValueMember = "Id";
					comboBoxClient.DataSource = listClients;
					comboBoxClient.SelectedItem = null;
				}
			}
			catch (Exception ex)
			{
				_logger.LogError(ex, "Ошибка загрузки изделий для заказа или списка клиентов");
				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
			}
		}

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

					var furniture = _logicFurniture.ReadElement(new FurnitureSearchModel
					{
						Id = id
					});

					int count = Convert.ToInt32(textBoxCount.Text);

					textBoxSum.Text = Math.Round(count * (furniture?.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 TextBoxCount_TextChanged(object sender, EventArgs e)
		{
			CalcSum();
		}

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

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

				return;
			}

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

				return;
			}

			if (comboBoxClient.SelectedValue == null)
			{
				MessageBox.Show("Выберите заказчика", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);

				return;
			}

			_logger.LogInformation("Создание заказа");

			try
			{
				var operationResult = _logicOrder.CreateOrder(new OrderBindingModel
				{
					FurnitureId = Convert.ToInt32(comboBoxFurniture.SelectedValue),
					ClientId = Convert.ToInt32(comboBoxClient.SelectedValue),
					Count = Convert.ToInt32(textBoxCount.Text),
					Sum = Convert.ToDouble(textBoxSum.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();
		}
	}
}