using ConfectioneryContracts.BussinessLogicsContracts;
using ConfectioneryContracts.SearchModels;
using ConfectioneryContracts.BindingModels;
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 ConfectioneryView
{
    public partial class FormCreateOrder : Form
    {
        private readonly ILogger _logger;
        private readonly IPastryLogic _logicPa;
        private readonly IOrderLogic _logicO;
        private readonly IClientLogic _logicC;
        public FormCreateOrder(ILogger<FormCreateOrder> logger, IPastryLogic logicPa, IOrderLogic logicO, IClientLogic logicC)
        {
            InitializeComponent();
            _logger = logger;
            _logicPa = logicPa;
            _logicO = logicO;
            _logicC = logicC;
        }

        private void FormCreateOrder_Load(object sender, EventArgs e)
        {
            try
            {
                var pastryList = _logicPa.ReadList(null);
                if (pastryList != null)
                {
                    comboBoxPastry.DisplayMember = "PastryName";
                    comboBoxPastry.ValueMember = "Id";
                    comboBoxPastry.DataSource = pastryList;
                    comboBoxPastry.SelectedItem = null;
                }
                _logger.LogInformation("Загрузка кондитерских изделий для заказа");
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Ошибка при загрузке кондитерского изделия для заказа");
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            _logger.LogInformation("Loading clients for order");
            try
            {
                var clientList = _logicC.ReadList(null);
                if (clientList != null)
                {
                    comboBoxClient.DisplayMember = "ClientFIO";
                    comboBoxClient.ValueMember = "Id";
                    comboBoxClient.DataSource = clientList;
                    comboBoxClient.SelectedItem = null;
                }
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Ошибка при загрузке клиента для заказа");
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void CalcSum()
        {
            if (comboBoxPastry.SelectedValue != null && !string.IsNullOrEmpty(textBoxCount.Text))
            {
                try
                {
                    int id = Convert.ToInt32(comboBoxPastry.SelectedValue);
                    var product = _logicPa.ReadElement(new PastrySearchModel { Id = id });
                    int count = Convert.ToInt32(textBoxCount.Text);
                    textBoxSum.Text = Math.Round(count * (product?.Price ?? 0), 2).ToString();
                    _logger.LogInformation("Расчет суммы заказа");
                }
                catch (Exception ex)
                {
                    _logger.LogError(ex, "Ошибка в расчёте суммы заказа");
                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
        }

        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 (comboBoxPastry.SelectedValue == null)
            {
                MessageBox.Show("Выберите кондитерское изделие", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            if (comboBoxClient.SelectedValue == null)
            {
                MessageBox.Show("Выберите клиента", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            _logger.LogInformation("Создание заказа");
            try
            {
                var operationResult = _logicO.CreateOrder(new OrderBindingModel
                {
                    PastryId = Convert.ToInt32(comboBoxPastry.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, "Order creation error");
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

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

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

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