/******************************************************************************
 * Icinga 2                                                                   *
 * Copyright (C) 2012-2015 Icinga Development Team (http://www.icinga.org)    *
 *                                                                            *
 * This program is free software; you can redistribute it and/or              *
 * modify it under the terms of the GNU General Public License                *
 * as published by the Free Software Foundation; either version 2             *
 * of the License, or (at your option) any later version.                     *
 *                                                                            *
 * This program is distributed in the hope that it will be useful,            *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
 * GNU General Public License for more details.                               *
 *                                                                            *
 * You should have received a copy of the GNU General Public License          *
 * along with this program; if not, write to the Free Software Foundation     *
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
 ******************************************************************************/

#include "icinga/apiactions.hpp"
#include "icinga/service.hpp"
#include "icinga/pluginutility.hpp"
#include "remote/apiaction.hpp"
#include "remote/httputility.hpp"
#include "base/utility.hpp"
#include "base/convert.hpp"

using namespace icinga;

Dictionary::Ptr ApiActions::CreateResult(const int code, const String& status) {
	Dictionary::Ptr result = new Dictionary();
	result->Set("code", code);
	result->Set("status", status);
	return result;
}

REGISTER_APIACTION(reschedule_check, "Service;Host", &ApiActions::RescheduleCheck);
REGISTER_APIACTION(process_check_result, "Service;Host", &ApiActions::ProcessCheckResult);

Dictionary::Ptr ApiActions::RescheduleCheck(const DynamicObject::Ptr& object, const Dictionary::Ptr& params)
{
	Checkable::Ptr checkable = static_pointer_cast<Checkable>(object);

	if (!checkable)
		return ApiActions::CreateResult(404, "Cannot reschedule check for non-existent object");

	if (Convert::ToBool(HttpUtility::GetLastParameter(params, "force")))
		checkable->SetForceNextCheck(true);

	double nextCheck;
	if (params->Contains("next_check"))
		nextCheck = HttpUtility::GetLastParameter(params, "next_check");
	else
		nextCheck = Utility::GetTime();

	checkable->SetNextCheck(nextCheck);

	return ApiActions::CreateResult(200, "Successfully rescheduled check for " + checkable->GetName());
}

Dictionary::Ptr ApiActions::ProcessCheckResult(const DynamicObject::Ptr& object, const Dictionary::Ptr& params)
{
	Checkable::Ptr checkable = static_pointer_cast<Checkable>(object);

	if (!checkable)
		return ApiActions::CreateResult(404, "Cannot process passive check result for non-existent object");

	if (!checkable->GetEnablePassiveChecks())
		return ApiActions::CreateResult(403, "Passive checks are disabled for " + checkable->GetName());

	String name;

	Host::Ptr host;
	Service::Ptr service;
	tie(host, service) = GetHostService(checkable);

	if (!params->Contains("exit_status"))
		return ApiActions::CreateResult(403, "Parameter 'exit_status' is required");

	int exitStatus = HttpUtility::GetLastParameter(params, "exit_status");

	ServiceState state;

	if (!service) {
		name = host->GetName();
		if (exitStatus == 0)
			state = ServiceOK;
		else if (exitStatus == 1)
			state = ServiceCritical;
		else
			return ApiActions::CreateResult(403, "Invalid 'exit_status' for Host " + name);
	} else {
		state = PluginUtility::ExitStatusToState(exitStatus);
		name = service->GetName() + "!" + service->GetHostName();
	}

	if (!params->Contains("output"))
		return ApiActions::CreateResult(400, "Parameter 'output' is required");

	CheckResult::Ptr cr = new CheckResult();
	cr->SetOutput(HttpUtility::GetLastParameter(params, "output"));
	cr->SetState(state);

	cr->SetCheckSource(HttpUtility::GetLastParameter(params, "check_source"));
	cr->SetPerformanceData(HttpUtility::GetLastParameter(params, "performance_data"));
	cr->SetCommand(HttpUtility::GetLastParameter(params, "command"));
	cr->SetExecutionEnd(HttpUtility::GetLastParameter(params, "execution_end"));
	cr->SetExecutionStart(HttpUtility::GetLastParameter(params, "execution_start"));
	cr->SetScheduleEnd(HttpUtility::GetLastParameter(params, "schedule_end"));
	cr->SetScheduleStart(HttpUtility::GetLastParameter(params, "schedule_start"));

	checkable->ProcessCheckResult(cr);

	if (!service) {
		ObjectLock olock(checkable);

		/* Reschedule the next check. The side effect of this is that for as long
		 * as we receive passive results for a service we won't execute any
		 * active checks. */
		checkable->SetNextCheck(Utility::GetTime() + checkable->GetCheckInterval());
	}

	return ApiActions::CreateResult(200, "Successfully processed check result for " + name);
}