/*
 * Copyright (C) 2015, 2016 "IoT.bzh"
 * Author "Romain Forlot" <romain.forlot@iot.bzh>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *	http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
*/

#include <string>
#include <string.h>
// afb-utilities
#include <wrap-json.h>
#include <filescan-utils.h>
// controller
#include <ctl-lua.h>

#include "signal-composer-binding.hpp"
#include "signal-composer-apidef.h"
#include "signal-composer.hpp"

/// @brief callback for receiving message from low binding. Treatment itself is made in SigComp class.
void onEvent(const char *event, json_object *object)
{
	AFB_DEBUG("Received event json: %s", json_object_to_json_string(object));
	bindingApp& bApp = bindingApp::instance();

	std::shared_ptr<Signal> sig = bApp.searchSignal(event);
	if(sig != nullptr)
	{
		sig->onReceivedCB(object);
	}
}
/// @brief entry point for client subscription request. Treatment itself is made in SigComp class.
void subscribe(afb_req request)
{
	if(true)
		afb_req_success(request, NULL, NULL);
	else
		afb_req_fail(request, "error", NULL);
}

/// @brief entry point for client un-subscription request. Treatment itself is made in SigComp class.
void unsubscribe(afb_req request)
{
	if(true)
		afb_req_success(request, NULL, NULL);
	else
		afb_req_fail(request, "error when unsubscribe", NULL);
}

/// @brief verb that loads JSON configuration (old SigComp.json file now)
void loadConf(afb_req request)
{
	json_object* args = afb_req_json(request);
	const char* confd;

	wrap_json_unpack(args, "{s:s}", "path", &confd);
	if(true)
		afb_req_success(request, NULL, NULL);
	else
		afb_req_fail_f(request, "Loading configuration or subscription error", "Error code: -1");
}

/// @brief entry point for get requests. Treatment itself is made in SigComp class.
void get(afb_req request)
{
	if(true)
	{
		afb_req_success(request, NULL, NULL);
	}
	else
	{
		afb_req_fail(request, "error", NULL);
	}
}

int loadConf()
{
	int ret = 0;
	const char* rootdir = strncat(GetBindingDirPath(), "/etc",
		sizeof(GetBindingDirPath()) - strlen(GetBindingDirPath()) -1);

	bindingApp& bApp = bindingApp::instance();
	ret = bApp.loadConfig(rootdir);

	#ifdef CONTROL_SUPPORT_LUA
		ret += LuaConfigLoad();
	#endif

	return ret;
}

int execConf()
{
	bindingApp& bApp = bindingApp::instance();
	int ret = CtlConfigExec(bApp.ctlConfig());
	std::vector<std::shared_ptr<Signal>> allSignals = bApp.getAllSignals();
	ssize_t sigCount = allSignals.size();
	for( std::shared_ptr<Signal>& sig: allSignals)
	{
		sig->attachToSources(bApp);
	}

	for(auto& sig: allSignals)
	{
		if( (ret = sig->recursionCheck()) )
		{
			AFB_ERROR("There is an infinite recursion loop in your signals definition. Root coming from signal: %s", sig->id().c_str());
			return ret;
		}
	}

	AFB_DEBUG("Signal Composer Control configuration Done.\n signals=%d", (int)sigCount);

	return ret;
}