namespace TPSBR
{
	public class SceneService : CoreBehaviour
	{
		// PUBLIC MEMBERS

		public SceneContext Context       => _context;
		public Scene        Scene         => _scene;
		public bool         IsActive      => _isActive;
		public bool         IsInitialized => _isInitialized;

		// PRIVATE MEMBERS

		private Scene        _scene;
		private SceneContext _context;
		private bool         _isInitialized;
		private bool         _isActive;

		// INTERNAL METHODS

		internal void Initialize(Scene scene, SceneContext context)
		{
			if (_isInitialized == true)
				return;

			_scene = scene;
			_context = context;

			OnInitialize();

			_isInitialized = true;
		}

		internal void Deinitialize()
		{
			if (_isInitialized == false)
				return;

			Deactivate();

			OnDeinitialize();

			_scene = null;
			_context = null;

			_isInitialized = false;
		}

		internal void Activate()
		{
			if (_isInitialized == false)
				return;

			if (_isActive == true)
				return;

			OnActivate();

			_isActive = true;
		}

		internal void Tick()
		{
			if (_isActive == false)
				return;

			OnTick();
		}

		internal void LateTick()
		{
			if (_isActive == false)
				return;

			OnLateTick();
		}

		internal void Deactivate()
		{
			if (_isActive == false)
				return;

			OnDeactivate();

			_isActive = false;
		}

		// GameService INTERFACE

		protected virtual void OnInitialize()
		{
		}

		protected virtual void OnDeinitialize()
		{
		}

		protected virtual void OnActivate()
		{
		}

		protected virtual void OnDeactivate()
		{
		}

		protected virtual void OnTick()
		{
		}

		protected virtual void OnLateTick()
		{
		}
	} 
}