/*************************************************************************/
/*  object.hpp                                                           */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
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/*************************************************************************/

#ifndef GODOT_OBJECT_HPP
#define GODOT_OBJECT_HPP

#include <godot_cpp/core/defs.hpp>
#include <godot_cpp/variant/variant.hpp>

#include <godot_cpp/classes/object.hpp>

#include <godot_cpp/godot.hpp>

#include <godot/gdnative_interface.h>

#include <vector>

#define ADD_SIGNAL(m_signal) ClassDB::add_signal(get_class_static(), m_signal)
#define ADD_PROPERTY(m_property, m_setter, m_getter) ClassDB::add_property(get_class_static(), m_property, m_setter, m_getter)

namespace godot {

struct PropertyInfo {
	Variant::Type type = Variant::NIL;
	const char *name = nullptr;
	const char *class_name = nullptr;
	uint32_t hint = 0;
	const char *hint_string = nullptr;
	uint32_t usage = 7;

	operator GDNativePropertyInfo() const {
		GDNativePropertyInfo info;
		info.type = type;
		info.name = name;
		info.hint = hint;
		info.hint_string = hint_string;
		info.class_name = class_name;
		info.usage = usage;
		return info;
	}

	PropertyInfo() = default;

	PropertyInfo(Variant::Type p_type, const char *p_name, PropertyHint p_hint = PROPERTY_HINT_NONE, const char *p_hint_string = "", uint32_t p_usage = PROPERTY_USAGE_DEFAULT, const char *p_class_name = "") :
			type(p_type),
			name(p_name),
			hint(p_hint),
			hint_string(p_hint_string),
			usage(p_usage) {
		if (hint == PROPERTY_HINT_RESOURCE_TYPE) {
			class_name = hint_string;
		} else {
			class_name = p_class_name;
		}
	}

	PropertyInfo(GDNativeVariantType p_type, const char *p_name, PropertyHint p_hint = PROPERTY_HINT_NONE, const char *p_hint_string = "", uint32_t p_usage = PROPERTY_USAGE_DEFAULT, const char *p_class_name = "") :
			PropertyInfo((Variant::Type)p_type, p_name, p_hint, p_hint_string, p_usage, p_class_name) {}
};

struct MethodInfo {
	const char *name;
	PropertyInfo return_val;
	uint32_t flags;
	int id = 0;
	std::vector<PropertyInfo> arguments;
	std::vector<Variant> default_arguments;

	inline bool operator==(const MethodInfo &p_method) const { return id == p_method.id; }
	inline bool operator<(const MethodInfo &p_method) const { return id == p_method.id ? (name < p_method.name) : (id < p_method.id); }

	operator Dictionary() const;

	static MethodInfo from_dict(const Dictionary &p_dict);

	MethodInfo();
	MethodInfo(const char *p_name);
	template <class... Args>
	MethodInfo(const char *p_name, const Args &...args);
	MethodInfo(Variant::Type ret);
	MethodInfo(Variant::Type ret, const char *p_name);
	template <class... Args>
	MethodInfo(Variant::Type ret, const char *p_name, const Args &...args);
	MethodInfo(const PropertyInfo &p_ret, const char *p_name);
	template <class... Args>
	MethodInfo(const PropertyInfo &p_ret, const char *p_name, const Args &...);
};

template <class... Args>
MethodInfo::MethodInfo(const char *p_name, const Args &...args) :
		name(p_name), flags(METHOD_FLAG_NORMAL) {
	arguments = { args... };
}

template <class... Args>
MethodInfo::MethodInfo(Variant::Type ret, const char *p_name, const Args &...args) :
		name(p_name), flags(METHOD_FLAG_NORMAL) {
	return_val.type = ret;
	arguments = { args... };
}

template <class... Args>
MethodInfo::MethodInfo(const PropertyInfo &p_ret, const char *p_name, const Args &...args) :
		name(p_name), return_val(p_ret), flags(METHOD_FLAG_NORMAL) {
	arguments = { args... };
}

template <class T>
T *Object::cast_to(Object *p_object) {
	GDNativeObjectPtr casted = internal::interface->object_cast_to(p_object->_owner, internal::interface->classdb_get_class_tag(T::get_class_static()));
	if (casted == nullptr) {
		return nullptr;
	}
	return reinterpret_cast<T *>(internal::interface->object_get_instance_binding(casted, internal::token, &T::___binding_callbacks));
}

} // namespace godot

#endif // ! GODOT_OBJECT_HPP