using PortalAccountsContracts.BindingModels;
using PortalAccountsContracts.BusinessLogicsContracts;

namespace PortalAccountsView
{
    public partial class FormInterests : Form
    {
        private readonly IInterestLogic _logic;

        private bool dataLoading = false;

        public FormInterests(IInterestLogic logic)
        {
            InitializeComponent();
            _logic = logic;
        }

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

        private void LoadData()
        {
            dataLoading = true;
            try
            {
                var list = _logic.ReadList(null);
                if (list != null)
                {
                    foreach (var interest in list)
                    {
                        int rowIndex = dataGridView.Rows.Add();
                        dataGridView.Rows[rowIndex].Cells[0].Value = interest.Name;
                        dataGridView.Rows[rowIndex].Cells[1].Value = interest.Id;
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            finally
            {
                dataLoading = false;
            }
        }

        private void DataGridView_CellValueChanged(object sender, DataGridViewCellEventArgs e)
        {
            if (dataLoading || e.RowIndex < 0 || e.ColumnIndex != 0) 
                return;
            if (dataGridView.Rows[e.RowIndex].Cells[1].Value != null) {
                var name = dataGridView.Rows[e.RowIndex].Cells[0].Value?.ToString() 
                    ?? throw new Exception("Не заполнено название интерес");
                _logic.Update(new InterestBindingModel { Id = Convert.ToInt32(dataGridView.Rows[e.RowIndex].Cells[1].Value), Name = name });
            }
            else
            {
                var name = dataGridView.Rows[e.RowIndex].Cells[0].Value?.ToString()
                    ?? throw new Exception("Не заполнено название интерес");
                _logic.Create(new InterestBindingModel { Id = 0, Name = name });
                var list = _logic.ReadList(null) ?? throw new Exception("Не удалось получить список интересов");
                int newInterestsId = list.Last().Id;
                dataGridView.Rows[e.RowIndex].Cells[1].Value = newInterestsId;
            }
        }

        private void DataGridView_KeyUp(object sender, KeyEventArgs e)
        {
            switch (e.KeyCode)
            {
                case Keys.Insert:
                    dataGridView.Rows.Add();
                    break;
            }
        }

        private void DeleteRows(DataGridViewSelectedRowCollection rows)
        {
            for (int i = 0; i < rows.Count; i++)
            {
                DataGridViewRow row = rows[i];
                if (row.IsNewRow)  
                    continue;
                if (row.Cells[1].Value != null && !_logic.Delete(new InterestBindingModel { Id = Convert.ToInt32(row.Cells[1].Value) })) 
                    throw new Exception($"Ошибка удаления строки: {row.Cells[0].Value}");
                dataGridView.Rows.Remove(row);
            }
        }

        private void DataGridView_UserDeletingRow(object sender, DataGridViewRowCancelEventArgs e)
        {
            e.Cancel = true;
            if (dataGridView.SelectedRows == null) 
                return;
            if (MessageBox.Show("Удалить записи?", "Подтвердите действие", MessageBoxButtons.YesNo) == DialogResult.No) 
                return;
            DeleteRows(dataGridView.SelectedRows);
        }
    }
}