/**************************************************************************/
/*  net_socket.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        */
/* "Software"), to deal in the Software without restriction, including    */
/* 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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/**************************************************************************/

#pragma once

#include "core/io/ip.h"
#include "core/object/ref_counted.h"

class NetSocket : public RefCounted {
	GDSOFTCLASS(NetSocket, RefCounted);

protected:
	static NetSocket *(*_create)();

public:
	static NetSocket *create();

	enum PollType : int32_t {
		POLL_TYPE_IN,
		POLL_TYPE_OUT,
		POLL_TYPE_IN_OUT
	};

	enum Type : int32_t {
		TYPE_NONE,
		TYPE_TCP,
		TYPE_UDP,
	};

	enum class Family {
		NONE,
		INET,
		UNIX,
	};

	class Address {
		Family _family = Family::NONE;
		CharString _path;
		IPAddress _ip;
		uint16_t _port = 0;

	public:
		_FORCE_INLINE_ Family get_family() const { return _family; }
		_FORCE_INLINE_ bool is_inet() const { return _family == Family::INET; }
		_FORCE_INLINE_ bool is_unix() const { return _family == Family::UNIX; }
		_FORCE_INLINE_ bool is_valid() const { return is_inet() || is_unix(); }

		_FORCE_INLINE_ const IPAddress &ip() const { return _ip; }
		_FORCE_INLINE_ const uint16_t &port() const { return _port; }

		_FORCE_INLINE_ const CharString &get_path() const { return _path; }

		Address() {}

		Address(const IPAddress &p_addr, uint16_t p_port) :
				_family(Family::INET) {
			_ip = p_addr;
			_port = p_port;
		}

		Address(const String &p_path) :
				_family(Family::UNIX), _path(p_path.utf8()) {
		}

		Address(const CharString &p_path) :
				_family(Family::UNIX), _path(p_path) {
		}
	};

	virtual Error open(Family p_family, Type p_type, IP::Type &r_ip_type) = 0;
	virtual void close() = 0;
	virtual Error bind(Address p_addr) = 0;
	virtual Error listen(int p_max_pending) = 0;
	virtual Error connect_to_host(Address p_addr) = 0;
	virtual Error poll(PollType p_type, int timeout) const = 0;
	virtual Error recv(uint8_t *p_buffer, int p_len, int &r_read) = 0;
	virtual Error recvfrom(uint8_t *p_buffer, int p_len, int &r_read, IPAddress &r_ip, uint16_t &r_port, bool p_peek = false) = 0;
	virtual Error send(const uint8_t *p_buffer, int p_len, int &r_sent) = 0;
	virtual Error sendto(const uint8_t *p_buffer, int p_len, int &r_sent, IPAddress p_ip, uint16_t p_port) = 0;
	virtual Ref<NetSocket> accept(Address &r_addr) = 0;

	virtual bool is_open() const = 0;
	virtual int get_available_bytes() const = 0;
	virtual Error get_socket_address(Address *r_addr) const = 0;

	virtual Error set_broadcasting_enabled(bool p_enabled) = 0; // Returns OK if the socket option has been set successfully.
	virtual void set_blocking_enabled(bool p_enabled) = 0;
	virtual void set_ipv6_only_enabled(bool p_enabled) = 0;
	virtual void set_tcp_no_delay_enabled(bool p_enabled) = 0;
	virtual void set_reuse_address_enabled(bool p_enabled) = 0;
	virtual Error join_multicast_group(const IPAddress &p_multi_address, const String &p_if_name) = 0;
	virtual Error leave_multicast_group(const IPAddress &p_multi_address, const String &p_if_name) = 0;

	virtual ~NetSocket() {}
};