using ProjectTank.Drawnings;
using ProjectTank.Entities;
using ProjectTank.MovementStrategy;

namespace ProjectTank
{
    /// <summary>
    /// Форма работы с объектом "Танк"
    /// </summary>  
    public partial class FormTank : Form
    {
        /// <summary>
        /// Поле-объект для прорисовки объекта
        /// </summary>
        private DrawningTank2? _drawningTank;

        /// <summary>
        /// Стратегия перемещения
        /// </summary>
        private AbstractStrategy? _strategy;
        public DrawningTank2 SetTank
        {
            set
            {
                _drawningTank = value;
                _drawningTank.SetPictureSize(pictureBoxTanks.Width, pictureBoxTanks.Height);
                СomboBoxStrategy.Enabled = true;
                _strategy = null;
                Draw();
            }
        }
        /// <summary>
        /// Конструктор формы
        /// </summary>
        public FormTank()
        {
            InitializeComponent();
            _strategy = null;
        }
        /// <summary>
        /// Метод прорисовки танка
        /// </summary>
        private void Draw()
        {
            if (_drawningTank == null)
            {
                return;
            }
            Bitmap bmp = new(pictureBoxTanks.Width, pictureBoxTanks.Height);
            Graphics gr = Graphics.FromImage(bmp);
            _drawningTank.DrawTransport(gr);
            pictureBoxTanks.Image = bmp;
        }
        private void ButtonMove_Click(object sender, EventArgs e)
        {
            if (_drawningTank == null)
            {
                return;
            }
            string name = ((Button)sender)?.Name ?? string.Empty;
            bool result = false;
            switch (name)
            {
                case "buttonUp":
                    result = _drawningTank.MoveTransport(DirectionType.Up);
                    break;
                case "buttonLeft":
                    result = _drawningTank.MoveTransport(DirectionType.Left);
                    break;
                case "buttonRight":
                    result = _drawningTank.MoveTransport(DirectionType.Right);
                    break;
                case "buttonDown":
                    result = _drawningTank.MoveTransport(DirectionType.Down);
                    break;
            }
            if (result)
            {
                Draw();
            }
        }
        /// <summary>
        /// Обработка нажатия кнопки "Шаг"
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ButtonStrategyStep_Ckick(object sender, EventArgs e)
        {
            if (_drawningTank == null)
            {
                return;
            }
            if (СomboBoxStrategy.Enabled)
            {
                _strategy = СomboBoxStrategy.SelectedIndex switch
                {
                    0 => new MoveToCenter(),
                    1 => new MoveToBorder(),
                    _ => null,
                };
                if (_strategy == null)
                {
                    return;
                }
                _strategy.SetData(new MoveableTank(_drawningTank),
                pictureBoxTanks.Width, pictureBoxTanks.Height);
            }
            if (_strategy == null)
            {
                return;
            }
            СomboBoxStrategy.Enabled = false;
            _strategy.MakeStep();
            Draw();
            if (_strategy.GetStatus() == StrategyStatus.Finish)
            {
                СomboBoxStrategy.Enabled = true;
                _strategy = null;
            }
        }
    }
}