#pragma once

#include <queue>

#include "Plane.h"
#include "InputSystem.h"
#include "GameInterface.h"
#include "Shader.h"
#include "Cube.h"

#include <ext/quaternion_float.hpp>

#include <gl/glew.h>

struct Action {
	glm::ivec3 axis;
	int index;
	double duration;

	Action() : axis(glm::ivec3(0)), index(0), duration(0.0f) { }

	Action(const glm::ivec3& axis, int index, double duration)
		: axis(axis), index(index), duration(duration) {
	
	}
};

class SceneInterface : public GameInterface
{
private:
	Cube _cube;
	std::queue<Action> _actions;
	Action currentAction;

	InputSystem _inputSystem;

	glm::quat _orientation;

	bool _wasMouseDown;
	glm::vec2 _initialMouseLocation;
	Plane _plane;
	glm::vec2 _mousePositionPlane;

	glm::mat4 _view;
	glm::mat4 _perspective;

	GLuint _shaderProgram;
	GLuint _transformLocation;
	GLuint _arrayBufferObject;
	GLuint _vertexBufferObject;

	const float MIN_DRAG_MAGNITUDE = 0.16f;

	void ApplyAction(const Action& action);

	void OnDragStart();
	void OnDrag(double deltaTime);
	void OnDragStop();

public:
	void Initialize(GLFWwindow* window) override;

	void Update(float deltaTime) override;
	void Render(float aspectRatio) override;

	void EnqueueAction(const Action& action);

	void ClearResources() override;
};