using GiftShopContracts.BindingModels;
using GiftShopContracts.BusinessLogicsContracts;
using GiftShopContracts.DI;
using GiftShopContracts.SearchModels;
using GiftShopDataModels.Models;
using Microsoft.Extensions.Logging;

namespace GiftShopView
{
    public partial class FormGift : Form
    {
        private readonly ILogger _logger;

        private readonly IGiftLogic _logic;

        private int? _id;

        private Dictionary<int, (IComponentModel, int)> _giftComponents;

        public int Id { set { _id = value; } }

        public FormGift(ILogger<FormGift> logger, IGiftLogic logic)
        {
            InitializeComponent();
            _logger = logger;
            _logic = logic;
            _giftComponents = new Dictionary<int, (IComponentModel, int)>();
        }

        private void FormGift_Load(object sender, EventArgs e)
        {
            if (_id.HasValue)
            {
                _logger.LogInformation("Загрузка изделия");
                try
                {
                    var view = _logic.ReadElement(new GiftSearchModel
                    {
                        Id = _id.Value
                    });
                    if (view != null)
                    {
                        textBoxName.Text = view.GiftName;
                        textBoxPrice.Text = view.Price.ToString();
                        _giftComponents = view.GiftComponents ?? new
                        Dictionary<int, (IComponentModel, int)>();
                        LoadData();
                    }
                }
                catch (Exception ex)
                {
                    _logger.LogError(ex, "Ошибка загрузки изделия");
                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
                    MessageBoxIcon.Error);
                }
            }
        }

        private void LoadData()
        {
            _logger.LogInformation("Загрузка компонент изделия");
            try
            {
                if (_giftComponents != null)
                {
                    dataGridView.Rows.Clear();
                    foreach (var pc in _giftComponents)
                    {
                        dataGridView.Rows.Add(new object[] { pc.Key, pc.Value.Item1.ComponentName, pc.Value.Item2 });
                    }
                    textBoxPrice.Text = CalcPrice().ToString();
                }
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Ошибка загрузки компонент изделия");
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void ButtonAdd_Click(object sender, EventArgs e)
        {
			var form = DependencyManager.Instance.Resolve<FormGiftComponent>();

			if (form.ShowDialog() == DialogResult.OK)
			{
				if (form.ComponentModel == null)
				{
					return;
				}
				_logger.LogInformation("Добавление нового компонента:{ ComponentName} - { Count}", form.ComponentModel.ComponentName, form.Count);
				if (_giftComponents.ContainsKey(form.Id))
				{
					_giftComponents[form.Id] = (form.ComponentModel, form.Count);
				}
				else
				{
					_giftComponents.Add(form.Id, (form.ComponentModel, form.Count));
				}
				LoadData();
			}
		}

        private void ButtonUpd_Click(object sender, EventArgs e)
        {
			if (dataGridView.SelectedRows.Count == 1)
			{
				var form = DependencyManager.Instance.Resolve<FormGiftComponent>();

				int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells[0].Value);
				form.Id = id;
				form.Count = _giftComponents[id].Item2;
				if (form.ShowDialog() == DialogResult.OK)
				{
					if (form.ComponentModel == null)
					{
						return;
					}
					_logger.LogInformation("Изменение компонента:{ ComponentName} - { Count}", form.ComponentModel.ComponentName, form.Count);
					_giftComponents[form.Id] = (form.ComponentModel, form.Count);
					LoadData();
				}

			}
		}

        private void ButtonDel_Click(object sender, EventArgs e)
        {
            if (dataGridView.SelectedRows.Count == 1)
            {
                if (MessageBox.Show("Удалить запись?", "Вопрос", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
                {
                    try
                    {
                        _logger.LogInformation("Удаление компонента: { ComponentName} - { Count}", dataGridView.SelectedRows[0].Cells[1].Value);
                        _giftComponents?.Remove(Convert.ToInt32(dataGridView.SelectedRows[0].Cells[0].Value));
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }

                    LoadData();
                }
            }
        }

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

        private void ButtonSave_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(textBoxName.Text))
            {
                MessageBox.Show("Заполните название", "Ошибка",
               MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            if (string.IsNullOrEmpty(textBoxPrice.Text))
            {
                MessageBox.Show("Заполните цену", "Ошибка", MessageBoxButtons.OK,
               MessageBoxIcon.Error);
                return;
            }
            if (_giftComponents == null || _giftComponents.Count == 0)
            {
                MessageBox.Show("Заполните компоненты", "Ошибка",
               MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            _logger.LogInformation("Сохранение изделия");
            try
            {
                var model = new GiftBindingModel
                {
                    Id = _id ?? 0,
                    GiftName = textBoxName.Text,
                    Price = Convert.ToDouble(textBoxPrice.Text),
                    GiftComponents = _giftComponents
                };
                var operationResult = _id.HasValue ? _logic.Update(model) :
               _logic.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)
            {
                _logger.LogError(ex, "Ошибка сохранения изделия");
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

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

        private double CalcPrice()
        {
            double price = 0;
            foreach (var elem in _giftComponents)
            {
                price += ((elem.Value.Item1?.Cost ?? 0) * elem.Value.Item2);
            }
            return Math.Round(price * 1.1, 2);
        }
    }
}