// src/backend/serialize_visitor.cc - Copyright 2005, 2006, University
//               of Padova, dept. of Pure and Applied
//               Mathematics
//
// This file is part of SGPEMv2.
//
// This 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.
//
// SGPEMv2 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 SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

#include "xml_visitor.hh"

#include "backend/string_utils.hh"
#include "backend/resource.hh"
#include "backend/process.hh"
#include "backend/thread.hh"
#include "backend/request.hh"
#include "backend/sub_request.hh"
#include "backend/serializer_error.hh"


using namespace sgpem;

/*
#include <iostream>
using namespace std;
*/


XMLVisitor::XMLVisitor(xmlNodePtr current)
  : _current(current)
{
}

XMLVisitor::~XMLVisitor()
{
}

void XMLVisitor::from_resource(const Resource& obj)
{
}


void XMLVisitor::from_process(const Process& obj)
{
  from_process(_current, obj);
}


void XMLVisitor::from_thread(const Thread& obj)
{
  from_thread(_current, obj);
}


void XMLVisitor::from_request(const Request& obj)
{
}


void XMLVisitor::from_subrequest(const SubRequest& obj)
{
}



void XMLVisitor::from_resource(xmlNodePtr parent, const Resource& obj)
{
}


void XMLVisitor::from_process(xmlNodePtr parent, const Process& obj)
{
  if(parent!=NULL)
  {
    Glib::ustring strPriority;
    Glib::ustring strArrivalTime;
    int_to_string(obj.get_base_priority(), strPriority);
    int_to_string(obj.get_arrival_time(), strArrivalTime);

    xmlNodePtr process_node = xmlNewChild(parent, NULL, (const xmlChar *) "process", NULL);
    xmlNewProp(process_node, (const xmlChar *) "name", (const xmlChar *) obj.get_name().c_str());
    xmlNewProp(process_node, (const xmlChar *) "priority", (const xmlChar *) strPriority.c_str());
    xmlNewProp(process_node, (const xmlChar *) "arrival-time", (const xmlChar *) strArrivalTime.c_str());

    // make a threads subnode
    xmlNodePtr threads_node = xmlNewChild(process_node, NULL, (const xmlChar *) "threads", NULL);

    // iterate on threads
    typedef std::vector<Thread*> Threads;
    typedef std::vector<Thread*>::const_iterator thr_iterator;
    const Threads& tvect = ((Process&)obj).get_threads();
    thr_iterator iter = tvect.begin();
    thr_iterator end  = tvect.end();
    while(iter!=end)
    {
      from_thread(threads_node, *(*iter));
      iter++;
    }
  }
  else
  {
    throw SerializerError("Error trying to add process to empty XML node.");
  }
}


void XMLVisitor::from_thread(xmlNodePtr parent, const Thread& obj)
{
  if(parent!=NULL)
  {

    Glib::ustring strPriority;
    Glib::ustring strArrivalTime;
    Glib::ustring strLastsTime;
    int_to_string(obj.get_base_priority(), strPriority);
    int_to_string(obj.get_arrival_time(), strArrivalTime);
    int_to_string(obj.get_elapsed_time(), strLastsTime);
    // get_elapsed_time() or get_total_cpu_time() ???
    xmlNodePtr thread_node = xmlNewChild(_current, NULL, (const xmlChar *) "thread", NULL);
    xmlNewProp(thread_node, (const xmlChar *) "name", (const xmlChar *) obj.get_name().c_str());
    xmlNewProp(thread_node, (const xmlChar *) "priority", (const xmlChar *) strPriority.c_str());
    xmlNewProp(thread_node, (const xmlChar *) "arrival-delta", (const xmlChar *) strArrivalTime.c_str());
    xmlNewProp(thread_node, (const xmlChar *) "lasts-for", (const xmlChar *) strLastsTime.c_str());
  }
  else
  {
    throw SerializerError("Error trying to add thread to empty XML node.");
  }
}


void XMLVisitor::from_request(xmlNodePtr parent, const Request& obj)
{
}


void XMLVisitor::from_subrequest(xmlNodePtr parent, const SubRequest& obj)
{
}