/****************************************************************
 *  RetroShare is distributed under the following license:
 *
 *  Copyright (C) 2008 Robert Fernie
 *
 *  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.
 ****************************************************************/

#include "NetworkView.h"
#include <retroshare/rspeers.h>

#include <gpgme.h>

#include <iostream>
#include <algorithm>

#include "gui/elastic/node.h"

/** Constructor */
NetworkView::NetworkView(QWidget *parent)
: MainPage(parent)
{
  /* Invoke the Qt Designer generated object setup routine */
  ui.setupUi(this);

  mScene = new QGraphicsScene();
  ui.graphicsView->setScene(mScene);

  /* add button */
  connect( ui.refreshButton, SIGNAL( clicked( void ) ), this, SLOT( insertPeers( void ) ) );
  connect( mScene, SIGNAL( changed ( const QList<QRectF> & ) ), this, SLOT ( changedScene( void ) ) );

  /* Hide Settings frame */
  shownwSettingsFrame(false);
  connect( ui.nviewsettingsButton, SIGNAL(toggled(bool)), this, SLOT(shownwSettingsFrame(bool)));

  insertPeers();


  /* hide the Tree +/- */
//  ui.linkTreeWidget -> setRootIsDecorated( false );
  
    /* Set header resize modes and initial section sizes */
//	QHeaderView * _header = ui.linkTreeWidget->header () ;
//   	_header->setResizeMode (0, QHeaderView::Interactive);
//	_header->setResizeMode (1, QHeaderView::Interactive);
//	_header->setResizeMode (2, QHeaderView::Interactive);
//
//	_header->resizeSection ( 0, 400 );
//	_header->resizeSection ( 1, 50 );
//	_header->resizeSection ( 2, 150 );

}

void NetworkView::changedFoFCheckBox( )
{
	insertPeers();
}

void NetworkView::changedDrawSignatures( )
{
	insertPeers();
}

void NetworkView::changedDrawFriends( )
{
	insertPeers();
}

void  NetworkView::clearPeerItems()
{
	std::map<std::string, QGraphicsItem *>::iterator pit;

	for(pit = mPeerItems.begin(); pit != mPeerItems.end(); pit++)
	{
		mScene->destroyItemGroup((QGraphicsItemGroup *) pit->second);
	}
	mPeerItems.clear();
}


void  NetworkView::clearOtherItems()
{
	std::list<QGraphicsItem *>::iterator oit;

	for(oit = mOtherItems.begin(); oit != mOtherItems.end(); oit++)
	{
		mScene->removeItem(*oit);
		delete (*oit);
	}
	mOtherItems.clear();
}


void  NetworkView::clearLineItems()
{
	std::list<QGraphicsItem *>::iterator oit;

	for(oit = mLineItems.begin(); oit != mLineItems.end(); oit++)
	{
		mScene->removeItem(*oit);
		delete (*oit);
	}
	mLineItems.clear();
}


void  NetworkView::insertPeers()
{
	/* clear graphics scene */
  	ui.graphicsView->clearGraph();

	/* add all friends */
	std::list<std::string> ids;
	std::list<std::string>::iterator it;

	std::string ownId = rsPeers->getGPGOwnId();
	RsPeerDetails detail ;

	if(!rsPeers->getPeerDetails(ownId,detail))
		return ;

	ids = detail.gpgSigners ;

	std::cerr << "NetworkView::insertPeers()" << std::endl;

	int i = 0;
	uint32_t flags = 0;

	std::map<std::string,GraphWidget::NodeId> node_ids ;

	for(it = ids.begin(); it != ids.end(); it++, i++)
	{
		if (*it == ownId)
			flags |= GraphWidget::ELASTIC_NODE_FLAG_OWN ;

		/* *** */
		if (!rsPeers->getPeerDetails(*it, detail))
		{
			continue;
		}
		switch(detail.validLvl)
		{
			case GPGME_VALIDITY_UNKNOWN:
			case GPGME_VALIDITY_UNDEFINED: 
			case GPGME_VALIDITY_NEVER:
				/* lots of fall through */
				break;

			case GPGME_VALIDITY_MARGINAL:
				/* lots of fall through */
				flags |= GraphWidget::ELASTIC_NODE_FLAG_MARGINALAUTH;
				break;


			case GPGME_VALIDITY_FULL:
			case GPGME_VALIDITY_ULTIMATE:
				/* lots of fall through */
				flags |= GraphWidget::ELASTIC_NODE_FLAG_AUTHED;
				break;

			default: 
				break ;
		}

		node_ids[*it] = ui.graphicsView->addNode("       "+detail.name+"@"+*it,flags);

		std::cerr << "NetworkView::insertPeers() Added Friend: " << *it << std::endl;
	}

	/* iterate through all friends */

	std::cerr << "NetworkView::insertSignatures()" << std::endl;

	for(it = ids.begin(); it != ids.end(); it++, i++)
	{
		RsPeerDetails detail;
		if (!rsPeers->getPeerDetails(*it, detail))
		{
			continue;
		}

		for(std::list<std::string>::const_iterator sit(detail.gpgSigners.begin()); sit != detail.gpgSigners.end(); sit++)
		{
			if ((*it == ownId || *sit == ownId) && *it < *sit)
			{
				std::cerr << "NetworkView: Adding Arrow: ";
				std::cerr << *sit << " <-> " << *it;
				std::cerr << std::endl;

				if(node_ids.find(*sit) != node_ids.end())
					ui.graphicsView->addEdge(node_ids[*sit], node_ids[*it]);
			}
		}
	}

}


void  NetworkView::insertConnections()
{
#if 0
	/* iterate through all friends */
	std::list<std::string> fids, ids;
	std::list<std::string>::iterator it;

	std::string ownId = rsPeers->getGPGOwnId();
 	rsPeers->getPGPAllList(ids);
	rsPeers->getPGPFriendList(fids);

	std::cerr << "NetworkView::insertConnections()" << std::endl;

	// For the moment, only add friends.
	for(it = fids.begin(); it != fids.end(); it++)
	{
  		ui.graphicsView->addEdge("", *it);
		std::cerr << "NetworkView: Adding Edge: Self -> " << *it;
		std::cerr << std::endl;
	}

	int i = 0;
	for(it = ids.begin(); it != ids.end(); it++, i++)
	{
		if (rsPeers->isFriend(*it))
		{
			/* add own connection (check for it first) */
			std::list<std::string> &refList = connLists[*it];
			if (refList.end() == std::find(refList.begin(), refList.end(), ownId))
			{
				connLists[ownId].push_back(*it);
				connLists[*it].push_back(ownId);

  				ui.graphicsView->addEdge("", *it);
				std::cerr << "NetworkView: Adding Edge: Self -> " << *it;
				std::cerr << std::endl;
			}
			else
			{
				std::cerr << "NetworkView: Already Edge: Self -> " << *it;
				std::cerr << std::endl;
			}
		}

		std::list<std::string> friendList;
		std::list<std::string>::iterator it2;

		rsDisc->getDiscFriends(*it, friendList);
		int j = 0;

		for(it2 = friendList.begin(); it2 != friendList.end(); it2++)
		{
			if (*it == *it2)
				continue;

			/* check that we haven't added this one already */
			std::list<std::string> &refList = connLists[*it];
			if (refList.end() == std::find(refList.begin(), refList.end(), *it2))
			{
				connLists[*it2].push_back(*it);
				connLists[*it].push_back(*it2);

  				ui.graphicsView->addEdge(*it, *it2);
				std::cerr << "NetworkView: Adding Edge: " << *it << " <-> " << *it2;
				std::cerr << std::endl;
			}
			else
			{
				std::cerr << "NetworkView: Already Edge: " << *it << " <-> " << *it2;
				std::cerr << std::endl;
			}
		}
	}
#endif

}

void  NetworkView::insertSignatures()
{
}

void  NetworkView::changedScene()
{
}

/**
Toggles the Settings pane on and off, changes toggle button text
 */
void NetworkView::shownwSettingsFrame(bool show)
{
    if (show) {
        ui.viewsettingsframe->setVisible(true);
        ui.nviewsettingsButton->setChecked(true);
        ui.nviewsettingsButton->setToolTip(tr("Hide Settings"));
    } else {
        ui.viewsettingsframe->setVisible(false);
        ui.nviewsettingsButton->setChecked(false);
        ui.nviewsettingsButton->setToolTip(tr("Show Settings"));
    }
}