using GasStation.Repositories;
using GasStation.Entities;

namespace GasStation.Forms
{
    public partial class FormSupply : Form
    {
        private readonly ISupplyRepository _supplyRepository;

        public FormSupply(ISupplyRepository supplyRepository, ISupplierRepository supplierRepository, IProductRepository productRepository)
        {
            InitializeComponent();
            _supplyRepository = supplyRepository ??
                throw new ArgumentNullException(nameof(supplyRepository));

            comboBoxSupplier.DataSource = supplierRepository.ReadSupplier();
            comboBoxSupplier.DisplayMember = "SupplierName";
            comboBoxSupplier.ValueMember = "ID";

            ColumnProduct.DataSource = productRepository.ReadProduct();
            ColumnProduct.DisplayMember = "Cost";
            ColumnProduct.ValueMember = "ID";
        }

        private void ButtonSave_Click(object sender, EventArgs e)
        {
            try
            {
                if (dataGridViewSupply.RowCount < 1 ||
                    comboBoxSupplier.SelectedIndex < 0)
                {
                    throw new Exception("Имеются незаполненые поля");
                }

                _supplyRepository.CreateSupply(Supply.CreateSupply(0, (int)comboBoxSupplier.SelectedValue!, 0, CreateListSellingFromDataGrid()));

                Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Ошибка при сохранении", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
        }

        private void ButtonCancel_Click(object sender, EventArgs e) => Close();

        private List<SupplySupply> CreateListSellingFromDataGrid()
        {
            var list = new List<SupplySupply>();
            foreach (DataGridViewRow row in dataGridViewSupply.Rows)
            {
                if (row.Cells["ColumnProduct"].Value == null || row.Cells["ColumnCount"].Value == null)
                {
                    continue;
                }
                list.Add(SupplySupply.CreateSupply(0, Convert.ToInt32(row.Cells["ColumnCount"].Value))); 
            }

            return list;
        }
    }
}