PIBD-23_Fomichev_V.S._FamilyBudget/ProjectFamilyBudget/Forms/FormExpense.cs

using ProjectFamilyBudget.Entities;
using ProjectFamilyBudget.Entities.Enums;
using ProjectFamilyBudget.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 ProjectFamilyBudget.Forms
{
    public partial class FormExpense : Form
    {
        private readonly IExpense _expense;
        private int? _expenseId;
        public int Id
        {
            set
            {
                try
                {
                    var expense = _expense.ReadExpenseById(value);
                    if (expense == null)
                    {
                        throw new InvalidDataException(nameof(expense));
                    }
                    textBoxName.Text = expense.Name;
                    comboBoxExpenseType.SelectedItem = expense.ExpenseType;
                    textBoxCategory.Text = expense.ExpenseCategory;
                    _expenseId = value;

                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message, "Ошибка при получени данных", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
            }
        }
        public FormExpense(IExpense expense)
        {
            InitializeComponent();
            _expense = expense ??
                throw new ArgumentNullException(nameof(expense));
            comboBoxExpenseType.DataSource = Enum.GetValues(typeof(IncomeExpenseType));
        }

        private void buttonSave_Click(object sender, EventArgs e)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(textBoxName.Text)
                ||
                string.IsNullOrWhiteSpace(textBoxCategory.Text) || (comboBoxExpenseType.SelectedIndex < 0))
                {
                    throw new Exception("Имеются незаполненные поля");
                }
                if (_expenseId.HasValue)
                {
                    _expense.UpdateExpense(CreateExpense(_expenseId.Value));
                }
                else
                {
                    _expense.CreateExpense(CreateExpense(0));
                }
                Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Ошибка при сохранении",
                MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void buttonCansel_Click(object sender, EventArgs e) => Close();
        private Expense CreateExpense(int id) => Expense.CreateEntity(id, (IncomeExpenseType)comboBoxExpenseType.SelectedItem!
            , textBoxName.Text, textBoxCategory.Text);
    }
}