namespace BoardGame {
    //TODO UnityEngine.Vector2/UnityEngine.Vector2Int
    public struct Coordinate {
        public int x;
        public int y;
    }

    //TODO UnityEngine.Color
    public struct Color {
        public float r;
        public float g;
        public float b;
    }

    public abstract class Board {
        public delegate void ButtonEventHandler(int x, int y);
        public event ButtonEventHandler OnButtonUp;
        public event ButtonEventHandler OnButtonDown;

        public abstract int Width { get; } //TODO add setter?
        public abstract int Height { get; } //TODO add setter?

        /// <summary>
        /// As communicating with the board hardware may take some time it should only be done
        /// in update. Update then caches all relevant information which can be accessed by the
        /// other methods of this class.
        /// This means Update should not be called every frame but in it´s own loop on a background Thread
        /// </summary>
        public abstract void Update();

        /// <summary>
        /// Turns off all LEDs and resents all button states
        /// </summary>
        public abstract void Reset();


        /// <summary>
        /// Automatically detects the board size.
        /// Time intensive but should only be called once anyway
        /// </summary>
        public abstract void DetectSize();
        public abstract void GetSize(out int width, out int height);
        public abstract void SetSize(int width, int height);

        public abstract void SetLEDColor(Color color, Coordinate coordinate);
        public void SetLEDColor(Color color, IList<Coordinate> coordinates) {
            SetLEDColor(color, coordinates, 0, coordinates.Count);
        }
        public abstract void SetLEDColor(Color color, IList<Coordinate> coordinates, int offset, int count);
        public abstract Color GetLEDColor(Coordinate coordinate);
        /// <summary>
        /// Turns off all LEDs
        /// </summary>
        public abstract void ClearAllLEDS();

        //TODO not sure if they should be used as Board.Update probably should not happen every frame (it´s time intensive)
        public abstract bool GetButton(Coordinate coordinate);
        public abstract bool GetButtonUp(Coordinate coordinate);
        public abstract bool GetButtonDown(Coordinate coordinate);
    }
}