/**************************************************************************/
/*  openxr_extension_wrapper_extension.h                                  */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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/* Permission is hereby granted, free of charge, to any person obtaining  */
/* a copy of this software and associated documentation files (the        */
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/* without limitation the rights to use, copy, modify, merge, publish,    */
/* distribute, sublicense, and/or sell copies of the Software, and to     */
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/**************************************************************************/

#ifndef OPENXR_EXTENSION_WRAPPER_EXTENSION_H
#define OPENXR_EXTENSION_WRAPPER_EXTENSION_H

#include "../openxr_api_extension.h"
#include "openxr_extension_wrapper.h"

#include "core/object/ref_counted.h"
#include "core/os/os.h"
#include "core/os/thread_safe.h"
#include "core/variant/native_ptr.h"

class OpenXRExtensionWrapperExtension : public Object, public OpenXRExtensionWrapper, public OpenXRCompositionLayerProvider {
	GDCLASS(OpenXRExtensionWrapperExtension, Object);

protected:
	_THREAD_SAFE_CLASS_

	static void _bind_methods();

	Ref<OpenXRAPIExtension> openxr_api;

public:
	virtual HashMap<String, bool *> get_requested_extensions() override;

	GDVIRTUAL0R(Dictionary, _get_requested_extensions);

	virtual void *set_system_properties_and_get_next_pointer(void *p_next_pointer) override;
	virtual void *set_instance_create_info_and_get_next_pointer(void *p_next_pointer) override;
	virtual void *set_session_create_and_get_next_pointer(void *p_next_pointer) override;
	virtual void *set_swapchain_create_info_and_get_next_pointer(void *p_next_pointer) override;
	virtual void *set_hand_joint_locations_and_get_next_pointer(int p_hand_index, void *p_next_pointer) override;
	virtual XrCompositionLayerBaseHeader *get_composition_layer() override;

	//TODO workaround as GDExtensionPtr<void> return type results in build error in godot-cpp
	GDVIRTUAL1R(uint64_t, _set_system_properties_and_get_next_pointer, GDExtensionPtr<void>);
	GDVIRTUAL1R(uint64_t, _set_instance_create_info_and_get_next_pointer, GDExtensionPtr<void>);
	GDVIRTUAL1R(uint64_t, _set_session_create_and_get_next_pointer, GDExtensionPtr<void>);
	GDVIRTUAL1R(uint64_t, _set_swapchain_create_info_and_get_next_pointer, GDExtensionPtr<void>);
	GDVIRTUAL2R(uint64_t, _set_hand_joint_locations_and_get_next_pointer, int, GDExtensionPtr<void>);
	GDVIRTUAL0R(uint64_t, _get_composition_layer);

	virtual void on_register_metadata() override;
	virtual void on_before_instance_created() override;
	virtual void on_instance_created(const XrInstance p_instance) override;
	virtual void on_instance_destroyed() override;
	virtual void on_session_created(const XrSession p_session) override;
	virtual void on_process() override;
	virtual void on_pre_render() override;
	virtual void on_session_destroyed() override;

	GDVIRTUAL0(_on_register_metadata);
	GDVIRTUAL0(_on_before_instance_created);
	GDVIRTUAL1(_on_instance_created, uint64_t);
	GDVIRTUAL0(_on_instance_destroyed);
	GDVIRTUAL1(_on_session_created, uint64_t);
	GDVIRTUAL0(_on_process);
	GDVIRTUAL0(_on_pre_render);
	GDVIRTUAL0(_on_session_destroyed);

	virtual void on_state_idle() override;
	virtual void on_state_ready() override;
	virtual void on_state_synchronized() override;
	virtual void on_state_visible() override;
	virtual void on_state_focused() override;
	virtual void on_state_stopping() override;
	virtual void on_state_loss_pending() override;
	virtual void on_state_exiting() override;

	GDVIRTUAL0(_on_state_idle);
	GDVIRTUAL0(_on_state_ready);
	GDVIRTUAL0(_on_state_synchronized);
	GDVIRTUAL0(_on_state_visible);
	GDVIRTUAL0(_on_state_focused);
	GDVIRTUAL0(_on_state_stopping);
	GDVIRTUAL0(_on_state_loss_pending);
	GDVIRTUAL0(_on_state_exiting);

	virtual bool on_event_polled(const XrEventDataBuffer &p_event) override;

	GDVIRTUAL1R(bool, _on_event_polled, GDExtensionConstPtr<void>);

	Ref<OpenXRAPIExtension> get_openxr_api();

	void register_extension_wrapper();

	OpenXRExtensionWrapperExtension();
};

#endif // OPENXR_EXTENSION_WRAPPER_EXTENSION_H