using AirBomber.Drawnings;
using AirBomber.MovementStrategy;

namespace AirBomber;
/// <summary>
/// Форма для работы с объектом
/// </summary>
public partial class FormAirBomber : Form
{
    /// <summary>
    /// Поле-объект для прорисовки объекта
    /// </summary>
    private DrawningAirPlane? _drawningAirPlane;
    /// <summary>
    /// Стратегия перемещения
    /// </summary>
    private AbstractStrategy? _strategy;

    public DrawningAirPlane SetAirPlane
    {
        set
        {
            _drawningAirPlane = value;
            _drawningAirPlane.SetPictureSize(pictureBoxAirBomber.Width, pictureBoxAirBomber.Height);
            comboBoxStrategy.Enabled = true;
            _strategy = null;
            Draw();
        }
    }
    public FormAirBomber()
    {
        InitializeComponent();
        _strategy = null;
    }


    private void Draw()
    {
        if (_drawningAirPlane == null)
        {
            return;
        }
        if (pictureBoxAirBomber.Width == 0 || pictureBoxAirBomber.Height == 0)
        {
            return;
        }

        Bitmap bpm = new(pictureBoxAirBomber.Width, pictureBoxAirBomber.Height);
        Graphics gr = Graphics.FromImage(bpm);
        _drawningAirPlane?.DrawTransport(gr);
        pictureBoxAirBomber.Image = bpm;
    }


    private void ButtonMove_Click(object sender, EventArgs e)
    {
        if (_drawningAirPlane == null)
        {
            return;
        }

        string name = ((Button)sender)?.Name ?? string.Empty;
        bool result = false;
        switch (name)
        {
            case "ButtonUp":
                result = _drawningAirPlane.MoveTransport(DirectionType.Up);
                break;
            case "ButtonDown":
                result = _drawningAirPlane.MoveTransport(DirectionType.Down);
                break;
            case "ButtonLeft":
                result = _drawningAirPlane.MoveTransport(DirectionType.Left);
                break;
            case "ButtonRight":
                result = _drawningAirPlane.MoveTransport(DirectionType.Right);
                break;
        }
        if (result)
        {
            Draw();
        }
    }


    private void buttonStrategyStep_Click(object sender, EventArgs e)
    {
        if (_drawningAirPlane == null)
        {
            return;
        }

        if (comboBoxStrategy.Enabled)
        {
            _strategy = comboBoxStrategy.SelectedIndex switch
            {
                0 => new MoveToCenter(),
                1 => new MoveToBorder(),
                _ => null,
            };
            if (_strategy == null)
            {
                return;
            }
            _strategy.SetData(new MoveableAirPlane(_drawningAirPlane), pictureBoxAirBomber.Width, pictureBoxAirBomber.Height);
        }

        if (_strategy == null)
        {
            return;
        }
        comboBoxStrategy.Enabled = false;
        _strategy.MakeStep();
        Draw();

        if (_strategy.GetStatus() == StrategyStatus.Finish)
        {
            comboBoxStrategy.Enabled = true;
            _strategy = null;
        }
    }
}