// Cyphesis Online RPG Server and AI Engine
// Copyright (C) 2009 Alistair Riddoch
//
// 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 Street, Fifth Floor, Boston, MA 02110-1301 USA

// $Id$

#include "OpRuleHandler.h"

#include "common/log.h"
#include "common/debug.h"
#include "common/Inheritance.h"
#include "common/compose.hpp"

#include <Atlas/Objects/objectFactory.h>

#include <iostream>

using Atlas::Message::Element;
using Atlas::Message::MapType;
using Atlas::Message::ListType;
using Atlas::Objects::Root;

using String::compose;

static const bool debug_flag = false;

int OpRuleHandler::installOpDefinition(const std::string & class_name,
                                       const std::string & parent,
                                       const Atlas::Objects::Root & class_desc,
                                       std::string & dependent,
                                       std::string & reason)
{
    assert(class_name == class_desc->getId());

    Inheritance & i = Inheritance::instance();

    if (!i.hasClass(parent)) {
        debug(std::cout << "op_definition \"" << class_name
                        << "\" has non existant parent \"" << parent
                        << "\". Waiting." << std::endl << std::flush;);
        dependent = parent;
        reason = compose("Operation \"%1\" has parent \"%2\" which does "
                         "not exist.", class_name, parent);
        return 1;
    }

    Atlas::Objects::Root r = atlasOpDefinition(class_name, parent);

    if (i.addChild(class_desc) == 0) {
        return -1;
    }

    Atlas::Objects::Factories::instance()->addFactory(class_name, &Atlas::Objects::generic_factory);

    return 0;
}

int OpRuleHandler::modifyOpDefinition(const std::string & class_name,
                                      const Atlas::Objects::Root & class_desc)
{
    return 0;
}


int OpRuleHandler::check(const Atlas::Objects::Root & desc)
{
    assert(!desc->getParents().empty());
    if (desc->getObjtype() != "op_definition") {
        return -1;
    }
    return 0;
}

int OpRuleHandler::install(const std::string & name,
                           const std::string & parent,
                           const Atlas::Objects::Root & description,
                           std::string & dependent,
                           std::string & reason)
{
    return installOpDefinition(name, parent, description, dependent, reason);
}

int OpRuleHandler::update(const std::string & name,
                          const Atlas::Objects::Root & desc)
{
    return modifyOpDefinition(name, desc);
}