using Microsoft.EntityFrameworkCore.Metadata.Internal;
using PersonnelDepartmentContracts.BindingModels;
using PersonnelDepartmentContracts.BusinessLogicContracts;
using PersonnelDepartmentContracts.SearchModels;
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 PersonnelDepartmentView
{
	public partial class FormDeal : Form
	{
		private readonly IDealLogic _dealLogic;
		private readonly IDepartmentLogic _departmentLogic;
		private readonly IEmployeeLogic _employeeLogic;
		private readonly IPositionLogic _positionLogic;
		private readonly ITypeLogic _typeLogic;
		private int? _id;
		public int Id { set { _id = value; } }

		public FormDeal(IDealLogic dealLogic, IDepartmentLogic departmentLogic, IEmployeeLogic employeeLogic, IPositionLogic positionLogic, ITypeLogic typeLogic)
		{
			InitializeComponent();
			_dealLogic = dealLogic;
			_departmentLogic = departmentLogic;
			_employeeLogic = employeeLogic;
			_positionLogic = positionLogic;
			_typeLogic = typeLogic;
		}

		private void FormDeal_Load(object sender, EventArgs e)
		{
			comboBoxDepartment.DisplayMember = "Name";
			comboBoxDepartment.ValueMember = "Id";
			comboBoxDepartment.DataSource = _departmentLogic.ReadList(null);
			comboBoxEmployee.DisplayMember = "LastName";
			comboBoxEmployee.ValueMember = "Id";
			comboBoxEmployee.DataSource = _employeeLogic.ReadList(null);
			comboBoxPosition.DisplayMember = "Name";
			comboBoxPosition.ValueMember = "Id";
			comboBoxPosition.DataSource = _positionLogic.ReadList(null);
			comboBoxType.DisplayMember = "Name";
			comboBoxType.ValueMember = "Id";
			comboBoxType.DataSource = _typeLogic.ReadList(null);
			if (_id.HasValue)
			{
				try
				{
					var view = _dealLogic.ReadElement(new DealSearchModel
					{
						Id = _id.Value
					});
					if (view != null)
					{
						dateTimePickerFrom.Value = view.DateFrom;
						dateTimePickerTo.Value = view.DateTo;
						comboBoxDepartment.SelectedItem = view.DepartmentId;
						comboBoxEmployee.SelectedItem = view.EmployeeId;
						comboBoxPosition.SelectedItem = view.PositionId;
						comboBoxType.SelectedItem = view.TypeId;
					}
				}
				catch (Exception ex)
				{
					MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
					MessageBoxIcon.Error);
				}
			}
			else
			{
				comboBoxDepartment.SelectedItem = null;
				comboBoxEmployee.SelectedItem = null;
				comboBoxPosition.SelectedItem = null;
				comboBoxType.SelectedItem = null;
			}
		}

		private void ButtonSave_Click(object sender, EventArgs e)
		{
			if (comboBoxDepartment.SelectedItem == null)
			{
				MessageBox.Show("Выберите отдел", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			if (comboBoxEmployee.SelectedItem == null)
			{
				MessageBox.Show("Выберите сотрудника", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			if (comboBoxPosition.SelectedItem == null)
			{
				MessageBox.Show("Выберите должность", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			if (comboBoxType.SelectedItem == null)
			{
				MessageBox.Show("Выберите тип договора", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			try
			{
				var model = new DealBindingModel
				{
					Id = _id ?? 0,
					DateFrom = DateTime.SpecifyKind(dateTimePickerFrom.Value, DateTimeKind.Utc),
					DateTo = DateTime.SpecifyKind(dateTimePickerTo.Value, DateTimeKind.Utc),
					DepartmentId = Convert.ToInt32(comboBoxDepartment.SelectedValue),
					EmployeeId = Convert.ToInt32(comboBoxEmployee.SelectedValue),
					PositionId = Convert.ToInt32(comboBoxPosition.SelectedValue),
					TypeId = Convert.ToInt32(comboBoxType.SelectedValue)
				};
				var operationResult = _id.HasValue ? _dealLogic.Update(model) : _dealLogic.Create(model);
				if (!operationResult)
				{
					throw new Exception("Ошибка при сохранении. Дополнительная информация в логах.");
				}
				MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
				DialogResult = DialogResult.OK;
				Close();
			}
			catch (Exception ex)
			{
				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
			}
		}

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