using System;
using System.Windows.Forms;
using Contracts.BindingModels;
using Contracts.BusinessLogicContracts;
using Contracts.ViewModels;
using Library15Gerimovich;
using WinFormsLibrary1;

namespace Forms
{
    public partial class ProductForm : Form
    {
        private readonly IProductLogic _productLogic;
        private readonly ICategoryLogic _categoryLogic;
        private ProductViewModel _product;
        private bool _isNewProduct;

        public ProductForm(IProductLogic productLogic, ICategoryLogic categoryLogic, ProductViewModel product = null)
        {
            InitializeComponent();
            _categoryLogic = categoryLogic;
            _productLogic = productLogic;
            _product = product;
            _isNewProduct = product == null;

            LoadCategories();
            LoadProduct();
        }

        private void LoadCategories()
        {
            var categories = _categoryLogic.ReadList();
            _categoryComboBox.ClearItems();
            foreach (var category in categories)
            {
                _categoryComboBox.AddItem(category.Name);
            }
        }

        private void LoadProduct()
        {
            if (_product != null)
            {
                textBoxName.Text = _product.Name;
                textBoxDescription.Text = _product.Description;
                _categoryComboBox.SelectedValue = _product.Category;
                _countOnStorageControl.DoubleValue = _product.CountOnStorage;
            }
        }

        private void buttonSave_Click(object sender, EventArgs e)
        {
            var model = new ProductBindingModel
            {
                Id = string.IsNullOrEmpty(_product?.Id) ? 0 : int.Parse(_product?.Id),
                Name = textBoxName.Text,
                Description = textBoxDescription.Text,
                Category = _categoryComboBox.SelectedValue,
                CountOnStorage = _countOnStorageControl.DoubleValue != null ? (int?)_countOnStorageControl.DoubleValue : null
            };

            if (_isNewProduct)
            {
                _productLogic.Create(model);
            }
            else
            {
                _productLogic.Update(model);
            }

            this.DialogResult = DialogResult.OK;
            this.Close();
        }

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