#include "mapstorage.h"
#include <gtkmm.h>
#include <cmath>

MapStorage::MapStorage() : modified(false), file_name("")
{
  nodemap_storage["coordinates_x"] = new Graph::NodeMap<double>(graph);
  coords.setXMap(*nodemap_storage["coordinates_x"]);
  nodemap_storage["coordinates_y"] = new Graph::NodeMap<double>(graph);
  coords.setYMap(*nodemap_storage["coordinates_y"]);

  nodemap_storage["id"] = new Graph::NodeMap<double>(graph);
  edgemap_storage["id"] = new Graph::EdgeMap<double>(graph);

  nodemap_default["id"] = 1.0;
  edgemap_default["id"] = 1.0;
}

MapStorage::~MapStorage()
{
  for (std::map<std::string, Graph::NodeMap<double>*>::const_iterator it =
      nodemap_storage.begin(); it != nodemap_storage.end(); ++it)
  {
    delete it->second;
  }
  for (std::map<std::string, Graph::EdgeMap<double>*>::const_iterator it =
      edgemap_storage.begin(); it != edgemap_storage.end(); ++it)
  {
    delete it->second;
  }
}

int MapStorage::addNodeMap(const std::string & name, Graph::NodeMap<double> *nodemap, double default_value = 0.0)
{
  if( nodemap_storage.find(name) == nodemap_storage.end() )
    {
      nodemap_storage[name]=nodemap;
      // set the maps default value
      nodemap_default[name] = default_value;
      return 0;
    }
  return 1;
}

int MapStorage::addEdgeMap(const std::string & name, Graph::EdgeMap<double> *edgemap, double default_value = 0.0)
{
  if( edgemap_storage.find(name) == edgemap_storage.end() )
    {
      edgemap_storage[name]=edgemap;
      // set the maps default value
      edgemap_default[name] = default_value;
      return 0;
    }
  return 1;
}

double MapStorage::maxOfNodeMap(const std::string & name)
{
  double max=0;
  for (NodeIt j(graph); j!=INVALID; ++j)
  {
    if( (*nodemap_storage[name])[j]>max )
    {
      max=(*nodemap_storage[name])[j];
    }
  }
  return max;
}

double MapStorage::maxOfEdgeMap(const std::string & name)
{
  double max=0;
  for (EdgeIt j(graph); j!=INVALID; ++j)
  {
    if( (*edgemap_storage[name])[j]>max )
    {
      max=(*edgemap_storage[name])[j];
    }
  }
  return max;
}

double MapStorage::minOfNodeMap(const std::string & name)
{
  NodeIt j(graph);
  double min;
  if(j!=INVALID)
    {
      min=(*nodemap_storage[name])[j];
    }
  else
    {
      min=0;
    }
  for (; j!=INVALID; ++j)
  {
    if( (*nodemap_storage[name])[j]<min )
    {
      min=(*nodemap_storage[name])[j];
    }
  }
  return min;
}

double MapStorage::minOfEdgeMap(const std::string & name)
{
  EdgeIt j(graph);
  double min;
  if(j!=INVALID)
    {
      min=(*edgemap_storage[name])[j];
    }
  else
    {
      min=0;
    }
  for (EdgeIt j(graph); j!=INVALID; ++j)
  {
    if( (*edgemap_storage[name])[j]<min )
    {
      min=(*edgemap_storage[name])[j];
    }
  }
  return min;
}

int MapStorage::readFromFile(const std::string &filename)
{
  bool read_x = false;
  bool read_y = false;
  bool read_edge_id = false;

  try {
    LemonReader lreader(filename);
    ContentReader content(lreader);
    lreader.run();

    const std::vector<std::string>& nodeMapNames = content.nodeSetMaps(0);
    const std::vector<std::string>& edgeMapNames = content.edgeSetMaps(0);

    GraphReader<Graph> greader(filename, graph);
    for (std::vector<std::string>::const_iterator it = nodeMapNames.begin();
        it != nodeMapNames.end(); ++it)
    {
      if (*it == "coordinates_x")
      {
        read_x = true;
        //std::cout << "read X nodemap" << std::endl;
      }
      else if (*it == "coordinates_y")
      {
        read_y = true;
        //std::cout << "read Y nodemap" << std::endl;
      }
      else if (*it == "id")
      {
        //std::cout << "read id nodemap" << std::endl;
      }
      else
      {
        nodemap_storage[*it] = new Graph::NodeMap<double>(graph);
        //std::cout << "read " << *it << " nodemap" << std::endl;
      }
      greader.readNodeMap(*it, *nodemap_storage[*it]);
    }
    for (std::vector<std::string>::const_iterator it = edgeMapNames.begin();
        it != edgeMapNames.end(); ++it)
    {
      if (*it == "id")
      {
        //std::cout << "read id edgemap" << std::endl;
      }
      else
      {
        edgemap_storage[*it] = new Graph::EdgeMap<double>(graph);
        //std::cout << "read " << *it << " edgemap" << std::endl;
      }
      greader.readEdgeMap(*it, *edgemap_storage[*it]);
    }
    greader.run();
  } catch (DataFormatError& error) {
    Gtk::MessageDialog mdialog("Read Error");
    mdialog.set_message(error.what());
    mdialog.run();
    clear();
    return 1;
  }

  if (!read_edge_id)
  {
    edgemap_storage["id"] = new Graph::EdgeMap<double>(graph);
    int i = 1;
    for (EdgeIt e(graph); e != INVALID; ++e)
    {
      (*edgemap_storage["id"])[e] = i++;
    }
  }

  if (!read_x || !read_y)
  {
    int node_num = 0;
    for (NodeIt n(graph); n != INVALID; ++n)
    {
      node_num++;
    }
    const double pi = 3.142;
    double step = 2 * pi / (double) node_num;
    int i = 0;
    for (NodeIt n(graph); n != INVALID; ++n)
    {
      nodemap_storage["coordinates_x"]->set(n, 250.0 * cos(i * step));
      nodemap_storage["coordinates_y"]->set(n, 250.0 * sin(i * step));
      i++;
    }
  }

  // fill in the default values for the maps
  for (std::map<std::string, Graph::NodeMap<double>*>::const_iterator it =
      nodemap_storage.begin(); it != nodemap_storage.end(); ++it)
  {
    if ((it->first != "id") &&
        (it->first != "coordiantes_x") &&
        (it->first != "coordinates_y"))
    {
      nodemap_default[it->first] = 0.0;
    }
    else if (it->first == "id")
    {
      NodeIt n(graph);
      double max = (*nodemap_storage["id"])[n];
      for (; n != INVALID; ++n)
      {
        if ((*nodemap_storage["id"])[n] > max)
          max = (*nodemap_storage["id"])[n];
      }
      nodemap_default["id"] = max + 1.0;
    }
  }
  for (std::map<std::string, Graph::EdgeMap<double>*>::const_iterator it =
      edgemap_storage.begin(); it != edgemap_storage.end(); ++it)
  {
    if (it->first != "id")
    {
      edgemap_default[it->first] = 0.0;
    }
    else
    {
      double max = std::numeric_limits<double>::min();
      for (EdgeIt e(graph); e != INVALID; ++e)
      {
        if ((*edgemap_storage["id"])[e] > max)
          max = (*edgemap_storage["id"])[e];
      }
      if (max > std::numeric_limits<double>::min())
        edgemap_default["id"] = max + 1.0;
      else
        edgemap_default["id"] = 1.0;
    }
  }

  return 0;
}

void MapStorage::writeToFile(const std::string &filename)
{
  GraphWriter<Graph> gwriter(filename, graph);

  for (std::map<std::string, Graph::NodeMap<double>*>::const_iterator it =
      nodemap_storage.begin(); it != nodemap_storage.end(); ++it)
  {
    gwriter.writeNodeMap(it->first, *(it->second));
    //std::cout << "wrote " << it->first << " nodemap" << std::endl;
  }
  for (std::map<std::string, Graph::EdgeMap<double>*>::const_iterator it =
      edgemap_storage.begin(); it != edgemap_storage.end(); ++it)
  {
    gwriter.writeEdgeMap(it->first, *(it->second));
    //std::cout << "wrote " << it->first << " edgemap" << std::endl;
  }
  gwriter.run();
}

void MapStorage::clear()
{
  for (std::map<std::string, Graph::NodeMap<double>*>::iterator it =
      nodemap_storage.begin(); it != nodemap_storage.end(); ++it)
  {
    if ((it->first != "coordinates_x") &&
        (it->first != "coordinates_y") &&
        (it->first != "id"))
    {
      delete it->second;
      nodemap_storage.erase(it);
    }
  }
  for (std::map<std::string, Graph::EdgeMap<double>*>::iterator it =
      edgemap_storage.begin(); it != edgemap_storage.end(); ++it)
  {
    if (it->first != "id")
    {
      delete it->second;
      edgemap_storage.erase(it);
    }
  }
  for (std::map<std::string, double>::iterator it =
      nodemap_default.begin(); it != nodemap_default.end(); ++it)
  {
    if (it->first != "id")
      nodemap_default.erase(it);
  }
  for (std::map<std::string, double>::iterator it =
      edgemap_default.begin(); it != edgemap_default.end(); ++it)
  {
    if (it->first != "id")
      edgemap_default.erase(it);
  }
  graph.clear();
  file_name = "";
  modified = false;
}