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#pragma once
#include "common.h"

class AbstractBasicShaderProgram : public QObject, protected QOpenGLFunctions
{
	Q_OBJECT
public:
	AbstractBasicShaderProgram(QObject* parent = nullptr);
	~AbstractBasicShaderProgram() = default;
	void initialize();
	Q_SLOT void setViewMatrix(const glm::mat4& newViewMatrix);
	Q_SLOT void setProjectionMatrix(const glm::mat4& newProjectionMatrix);
	Q_SLOT void setModelMatrix(const glm::mat4& newModelMatrix);
	void draw();
	void teardown();
protected:
	void setMatrix(const char* name, const glm::mat4& matrix);
	void checkForGLErrors();
	virtual const char* vertexShaderSource() const = 0;
	virtual const char* fragmentShaderSource() const = 0;
	virtual const void* vertexData() const = 0;
	virtual int vertexSize() const = 0;
	virtual int vertexCount() const = 0;
	virtual void setupVertexArrays() = 0;
	virtual GLenum drawMode() const = 0;
	bool isInitialized = false;
	QOpenGLBuffer buffer;
	QOpenGLShader vertexShader;
	QOpenGLShader fragmentShader;
	std::optional<gl::ShaderProgram> program{std::nullopt};
	QOpenGLVertexArrayObject vertexArrayObject;
};