/*************************************************************************/
/*  upnp_device.cpp                                                      */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
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#include "upnp_device.h"

#include "upnp.h"

#include <miniupnpc/upnpcommands.h>

String UPNPDevice::query_external_address() const {
	ERR_FAIL_COND_V_MSG(!is_valid_gateway(), "", "The Internet Gateway Device must be valid.");

	char addr[16];
	int i = UPNP_GetExternalIPAddress(
			igd_control_url.utf8().get_data(),
			igd_service_type.utf8().get_data(),
			(char *)&addr);

	ERR_FAIL_COND_V_MSG(i != UPNPCOMMAND_SUCCESS, "", "Couldn't get external IP address.");

	return String(addr);
}

int UPNPDevice::add_port_mapping(int port, int port_internal, String desc, String proto, int duration) const {
	ERR_FAIL_COND_V_MSG(!is_valid_gateway(), UPNP::UPNP_RESULT_INVALID_GATEWAY, "The Internet Gateway Device must be valid.");
	ERR_FAIL_COND_V_MSG(port < 1 || port > 65535, UPNP::UPNP_RESULT_INVALID_PORT, "The port number must be set between 1 and 65535 (inclusive).");
	ERR_FAIL_COND_V_MSG(port_internal < 0 || port_internal > 65535, UPNP::UPNP_RESULT_INVALID_PORT, "The port number must be set between 0 and 65535 (inclusive)."); // Needs to allow 0 because 0 signifies "use external port as internal port"
	ERR_FAIL_COND_V_MSG(proto != "UDP" && proto != "TCP", UPNP::UPNP_RESULT_INVALID_PROTOCOL, "The protocol must be either TCP or UDP.");
	ERR_FAIL_COND_V_MSG(duration < 0, UPNP::UPNP_RESULT_INVALID_DURATION, "The port mapping's lease duration can't be negative.");

	if (port_internal < 1) {
		port_internal = port;
	}

	int i = UPNP_AddPortMapping(
			igd_control_url.utf8().get_data(),
			igd_service_type.utf8().get_data(),
			itos(port).utf8().get_data(),
			itos(port_internal).utf8().get_data(),
			igd_our_addr.utf8().get_data(),
			desc.is_empty() ? nullptr : desc.utf8().get_data(),
			proto.utf8().get_data(),
			nullptr, // Remote host, always nullptr as IGDs don't support it
			duration > 0 ? itos(duration).utf8().get_data() : nullptr);

	ERR_FAIL_COND_V_MSG(i != UPNPCOMMAND_SUCCESS, UPNP::upnp_result(i), "Couldn't add port mapping.");

	return UPNP::UPNP_RESULT_SUCCESS;
}

int UPNPDevice::delete_port_mapping(int port, String proto) const {
	ERR_FAIL_COND_V_MSG(port < 1 || port > 65535, UPNP::UPNP_RESULT_INVALID_PORT, "The port number must be set between 1 and 65535 (inclusive).");
	ERR_FAIL_COND_V_MSG(proto != "UDP" && proto != "TCP", UPNP::UPNP_RESULT_INVALID_PROTOCOL, "The protocol must be either TCP or UDP.");

	int i = UPNP_DeletePortMapping(
			igd_control_url.utf8().get_data(),
			igd_service_type.utf8().get_data(),
			itos(port).utf8().get_data(),
			proto.utf8().get_data(),
			nullptr // Remote host, always nullptr as IGDs don't support it
	);

	ERR_FAIL_COND_V_MSG(i != UPNPCOMMAND_SUCCESS, UPNP::upnp_result(i), "Couldn't delete port mapping.");

	return UPNP::UPNP_RESULT_SUCCESS;
}

void UPNPDevice::set_description_url(const String &url) {
	description_url = url;
}

String UPNPDevice::get_description_url() const {
	return description_url;
}

void UPNPDevice::set_service_type(const String &type) {
	service_type = type;
}

String UPNPDevice::get_service_type() const {
	return service_type;
}

void UPNPDevice::set_igd_control_url(const String &url) {
	igd_control_url = url;
}

String UPNPDevice::get_igd_control_url() const {
	return igd_control_url;
}

void UPNPDevice::set_igd_service_type(const String &type) {
	igd_service_type = type;
}

String UPNPDevice::get_igd_service_type() const {
	return igd_service_type;
}

void UPNPDevice::set_igd_our_addr(const String &addr) {
	igd_our_addr = addr;
}

String UPNPDevice::get_igd_our_addr() const {
	return igd_our_addr;
}

void UPNPDevice::set_igd_status(IGDStatus status) {
	igd_status = status;
}

UPNPDevice::IGDStatus UPNPDevice::get_igd_status() const {
	return igd_status;
}

bool UPNPDevice::is_valid_gateway() const {
	return igd_status == IGD_STATUS_OK;
}

void UPNPDevice::_bind_methods() {
	ClassDB::bind_method(D_METHOD("is_valid_gateway"), &UPNPDevice::is_valid_gateway);
	ClassDB::bind_method(D_METHOD("query_external_address"), &UPNPDevice::query_external_address);
	ClassDB::bind_method(D_METHOD("add_port_mapping", "port", "port_internal", "desc", "proto", "duration"), &UPNPDevice::add_port_mapping, DEFVAL(0), DEFVAL(""), DEFVAL("UDP"), DEFVAL(0));
	ClassDB::bind_method(D_METHOD("delete_port_mapping", "port", "proto"), &UPNPDevice::delete_port_mapping, DEFVAL("UDP"));

	ClassDB::bind_method(D_METHOD("set_description_url", "url"), &UPNPDevice::set_description_url);
	ClassDB::bind_method(D_METHOD("get_description_url"), &UPNPDevice::get_description_url);
	ADD_PROPERTY(PropertyInfo(Variant::STRING, "description_url"), "set_description_url", "get_description_url");

	ClassDB::bind_method(D_METHOD("set_service_type", "type"), &UPNPDevice::set_service_type);
	ClassDB::bind_method(D_METHOD("get_service_type"), &UPNPDevice::get_service_type);
	ADD_PROPERTY(PropertyInfo(Variant::STRING, "service_type"), "set_service_type", "get_service_type");

	ClassDB::bind_method(D_METHOD("set_igd_control_url", "url"), &UPNPDevice::set_igd_control_url);
	ClassDB::bind_method(D_METHOD("get_igd_control_url"), &UPNPDevice::get_igd_control_url);
	ADD_PROPERTY(PropertyInfo(Variant::STRING, "igd_control_url"), "set_igd_control_url", "get_igd_control_url");

	ClassDB::bind_method(D_METHOD("set_igd_service_type", "type"), &UPNPDevice::set_igd_service_type);
	ClassDB::bind_method(D_METHOD("get_igd_service_type"), &UPNPDevice::get_igd_service_type);
	ADD_PROPERTY(PropertyInfo(Variant::STRING, "igd_service_type"), "set_igd_service_type", "get_igd_service_type");

	ClassDB::bind_method(D_METHOD("set_igd_our_addr", "addr"), &UPNPDevice::set_igd_our_addr);
	ClassDB::bind_method(D_METHOD("get_igd_our_addr"), &UPNPDevice::get_igd_our_addr);
	ADD_PROPERTY(PropertyInfo(Variant::STRING, "igd_our_addr"), "set_igd_our_addr", "get_igd_our_addr");

	ClassDB::bind_method(D_METHOD("set_igd_status", "status"), &UPNPDevice::set_igd_status);
	ClassDB::bind_method(D_METHOD("get_igd_status"), &UPNPDevice::get_igd_status);
	ADD_PROPERTY(PropertyInfo(Variant::INT, "igd_status", PROPERTY_HINT_ENUM), "set_igd_status", "get_igd_status");

	BIND_ENUM_CONSTANT(IGD_STATUS_OK);
	BIND_ENUM_CONSTANT(IGD_STATUS_HTTP_ERROR);
	BIND_ENUM_CONSTANT(IGD_STATUS_HTTP_EMPTY);
	BIND_ENUM_CONSTANT(IGD_STATUS_NO_URLS);
	BIND_ENUM_CONSTANT(IGD_STATUS_NO_IGD);
	BIND_ENUM_CONSTANT(IGD_STATUS_DISCONNECTED);
	BIND_ENUM_CONSTANT(IGD_STATUS_UNKNOWN_DEVICE);
	BIND_ENUM_CONSTANT(IGD_STATUS_INVALID_CONTROL);
	BIND_ENUM_CONSTANT(IGD_STATUS_MALLOC_ERROR);
	BIND_ENUM_CONSTANT(IGD_STATUS_UNKNOWN_ERROR);
}

UPNPDevice::UPNPDevice() {
	description_url = "";
	service_type = "";
	igd_control_url = "";
	igd_service_type = "";
	igd_our_addr = "";
	igd_status = IGD_STATUS_UNKNOWN_ERROR;
}

UPNPDevice::~UPNPDevice() {
}