/******************************************************************************
 * Icinga 2                                                                   *
 * Copyright (C) 2012-2014 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 "config/configitembuilder.hpp"
#include "base/dynamictype.hpp"
#include <sstream>
#include <boost/foreach.hpp>
#include <boost/smart_ptr/make_shared.hpp>

using namespace icinga;

ConfigItemBuilder::ConfigItemBuilder(void)
	: m_Abstract(false)
{
	m_DebugInfo.FirstLine = 0;
	m_DebugInfo.FirstColumn = 0;
	m_DebugInfo.LastLine = 0;
	m_DebugInfo.LastColumn = 0;
}

ConfigItemBuilder::ConfigItemBuilder(const DebugInfo& debugInfo)
	: m_Abstract(false)
{
	m_DebugInfo = debugInfo;
}

void ConfigItemBuilder::SetType(const String& type)
{
	m_Type = type;
}

void ConfigItemBuilder::SetName(const String& name)
{
	m_Name = name;
}

void ConfigItemBuilder::SetAbstract(bool abstract)
{
	m_Abstract = abstract;
}

void ConfigItemBuilder::SetScope(const Dictionary::Ptr& scope)
{
	m_Scope = scope;
}

void ConfigItemBuilder::SetZone(const String& zone)
{
	m_Zone = zone;
}

void ConfigItemBuilder::AddExpression(Expression *expr)
{
	m_Expressions.push_back(expr);
}

void ConfigItemBuilder::SetFilter(const boost::shared_ptr<Expression>& filter)
{
	m_Filter = filter;
}

ConfigItem::Ptr ConfigItemBuilder::Compile(void)
{
	if (m_Type.IsEmpty()) {
		std::ostringstream msgbuf;
		msgbuf << "The type name of an object may not be empty: " << m_DebugInfo;
		BOOST_THROW_EXCEPTION(std::invalid_argument(msgbuf.str()));
	}

	if (!DynamicType::GetByName(m_Type)) {
		std::ostringstream msgbuf;
		msgbuf << "The type '" + m_Type + "' is unknown: " << m_DebugInfo;
		BOOST_THROW_EXCEPTION(std::invalid_argument(msgbuf.str()));
	}

	if (m_Name.IsEmpty()) {
		std::ostringstream msgbuf;
		msgbuf << "The name of an object may not be empty: " << m_DebugInfo;
		BOOST_THROW_EXCEPTION(std::invalid_argument(msgbuf.str()));
	}

	std::vector<Expression *> exprs;

	Array::Ptr templateArray = new Array();
	templateArray->Add(m_Name);

	exprs.push_back(new SetExpression(MakeIndexer(ScopeCurrent, "templates"), OpSetAdd,
	    new LiteralExpression(templateArray), m_DebugInfo));

	DictExpression *dexpr = new DictExpression(m_Expressions, m_DebugInfo);
	dexpr->MakeInline();
	exprs.push_back(dexpr);

	boost::shared_ptr<DictExpression> exprl = boost::make_shared<DictExpression>(exprs, m_DebugInfo);
	exprl->MakeInline();

	return new ConfigItem(m_Type, m_Name, m_Abstract, exprl, m_Filter,
	    m_DebugInfo, m_Scope, m_Zone);
}