using DaggerFramework.Resources;
using DaggerFramework.Rendering;

namespace DaggerFramework.SceneGraph
{
    public abstract class Layer : IDrawable
    {
        public Scene? Scene { get; set; }
        public InputHandler? Input { get; set; }
        public ResourceManager ResourceManager => Scene!.ResourceManager;

        public void BeginDraw(Renderer renderer) => OnBeginDraw(renderer);
        public void Draw(Renderer renderer) => OnDraw(renderer);
        public void EndDraw(Renderer renderer) => OnEndDraw(renderer);

        public void Start() => OnStart();
        public void Update(double dt) => OnUpdate(dt);
        public void ReceiveInput(InputHandler input) => OnInput(input);

        protected virtual void OnStart() { }
        protected virtual void OnUpdate(double dt) { }
        protected virtual void OnInput(InputHandler input) { }
        protected abstract void OnBeginDraw(Renderer renderer);
        protected abstract void OnDraw(Renderer renderer);
        protected abstract void OnEndDraw(Renderer renderer);
    }
}