using AirBomber.MovementStrategy;
using AirBomber.Rendering;

namespace AirBomber
{
    public partial class BomberForm : Form
    {
        private BomberRendererBase? _bomberRenderer;
        private AbstractStrategy? _strategy;

        public BomberForm()
        {
            InitializeComponent();
        }

        private void Draw()
        {
            if (_bomberRenderer == null)
                return;

            Bitmap bmp = new Bitmap(BomberPictureBox.Width, BomberPictureBox.Height);
            Graphics g = Graphics.FromImage(bmp);
            _bomberRenderer.DrawEntity(g);

            BomberPictureBox.Image = bmp;
        }

        private void ButtonCreateBomber_Click(object sender, EventArgs e)
        {
            Random random = new Random();

            _bomberRenderer = new BomberRenderer(
                random.Next(100, 300),
                random.Next(1000, 3000),
                Color.FromArgb(random.Next(0, 256), random.Next(0, 256), random.Next(0, 256)),
                Color.FromArgb(random.Next(0, 256), random.Next(0, 256), random.Next(0, 256)),
                true,
                true,
                BomberPictureBox.Width,
                BomberPictureBox.Height
            );
            _bomberRenderer.SetPosition(random.Next(10, 60), random.Next(10, 60));

            MovementStrategyComboBox.Enabled = true;
            Draw();
        }

        private void ButtonCreateBomberBase_Click(object sender, EventArgs e)
        {
            Random random = new Random();

            _bomberRenderer = new BomberRendererBase(
                random.Next(100, 200),
                random.Next(1000, 1800),
                Color.FromArgb(random.Next(0, 256), random.Next(0, 256), random.Next(0, 256)),
                BomberPictureBox.Width,
                BomberPictureBox.Height
            );
            _bomberRenderer.SetPosition(random.Next(20, 100), random.Next(20, 100));

            MovementStrategyComboBox.Enabled = true;
            Draw();
        }

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

            string ButtonName = ((Button)sender)?.Name ?? string.Empty;

            switch (ButtonName)
            {
                case "ButtonUp":
                    _bomberRenderer.MoveEntity(DirectionType.Up);
                    break;

                case "ButtonDown":
                    _bomberRenderer.MoveEntity(DirectionType.Down);
                    break;

                case "ButtonLeft":
                    _bomberRenderer.MoveEntity(DirectionType.Left);
                    break;

                case "ButtonRight":
                    _bomberRenderer.MoveEntity(DirectionType.Right);
                    break;
            }

            Draw();
        }

        private void ButtonPerformStep_Click(object sender, EventArgs e)
        {
            if (_bomberRenderer is null)
                return;

            if (MovementStrategyComboBox.Enabled)
            {
                _strategy = MovementStrategyComboBox.SelectedIndex switch
                {
                    0 => new MoveToCenterStrategy(),
                    1 => new MoveToDownRightStrategy(),

                    _ => null,
                };

                if (_strategy is null)
                    return;

                _strategy.SetData(
                    new ObjectEntityRenderer(_bomberRenderer),
                    BomberPictureBox.Width,
                    BomberPictureBox.Height
                );

                MovementStrategyComboBox.Enabled = false;
            }

            if (_strategy is null)
                return;

            _strategy.MakeStep();
            Draw();

            if (_strategy.GetStatus() == Status.Finish)
            {
                MovementStrategyComboBox.Enabled = true;
                _strategy = null;
            }
        }
    }
}