#pragma once

#include <cstdint>

#include <memory>

struct xcb_connection_t;

class IBoxed {
	friend struct BoxDeleter;

private:
	virtual void destroy() = 0;
};

struct BoxDeleter {
	void operator()(IBoxed* obj) {
		obj->destroy();
	}
};

template <typename T>
using Box = std::unique_ptr<T, BoxDeleter>;

struct alignas(16) Vec4 {
	float x, y, z, w;
};

namespace ffi {
struct RedrawArgs {
	float cam_yaw;
	float cam_pitch;
	float cam_distance;
	float cam_fovy;
};
} // namespace ffi

using ffi::RedrawArgs;

class ICore : public IBoxed {
public:
	virtual void configure(std::uint32_t width, std::uint32_t height) = 0;
	virtual void redraw(const RedrawArgs& args) = 0;
};

class ICoreFactory : public IBoxed {
private:
	virtual ICore* new_xcb(xcb_connection_t* connection, std::uint32_t window, std::uint32_t width, std::uint32_t height) const = 0;

public:
	Box<ICore> from_xcb(xcb_connection_t* connection, std::uint32_t window, std::uint32_t width, std::uint32_t height) const {
		return Box<ICore>{new_xcb(connection, window, width, height)};
	}
};