//
//  NSWrapper.hpp
//  XcodeOpenCL
//
//  Created by Joshua Moerman on 13/04/14.
//
//

#pragma once

#include <memory>
#include <functional>
#include <vector>
#include <string>

#include <CoreGraphics/CoreGraphics.h>

struct GLContext;
struct ContextParameters{
	GLContext & context;

	// These two functions will be set when invoking the draw_callback (and should be used)
	std::function<void(void)> bind_framebuffer; // function to bind the systems framebuffer and set the viewport
	std::function<void(void)> flush_drawable; // function to flush the drawable
};

struct GLViewFunctionality {
    // All three will only be called with the current gl context already set
    // May be called from different threads
    std::function<void(ContextParameters)> initialize_callback;
    std::function<void(ContextParameters)> draw_callback;
    std::function<void(ContextParameters, CGFloat, CGFloat)> resize_callback;
};

struct Control {
	std::string name = "default";
	double start = 0, min = 0, max = 1;
	std::function<void(double)> callback;
};

struct ControlFunctionality {
	std::vector<Control> sliders;
};

// returns a GLViewFunctionality with only its draw function set.
GLViewFunctionality simple_draw(std::function<void()> f);

struct NSAppWrapper {
    NSAppWrapper();
    ~NSAppWrapper();

    void run();
    void create_window(GLViewFunctionality const &);
    void create_window(ControlFunctionality const &);

    std::unique_ptr<struct NSAppWrapperImpl> impl;
};