/***************************************************************************
 *   Copyright (C) 2008 by Joris Guisson and Ivan Vasic                    *
 *   joris.guisson@gmail.com                                               *
 *   ivasic@gmail.com                                                      *
 *                                                                         *
 *   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 <QDateTime>
#include <kicon.h>
#include <klocale.h>
#include <syndication/item.h>
#include <syndication/enclosure.h>
#include "feedwidgetmodel.h"
#include "feed.h"

namespace kt
{

	FeedWidgetModel::FeedWidgetModel(Feed* feed,QObject* parent)
			: QAbstractTableModel(parent),feed(feed)
	{
		Syndication::FeedPtr ptr = feed->feedData();
		if (ptr)
			items = ptr->items();
		connect(feed,SIGNAL(updated()),this,SLOT(updated()));
	}


	FeedWidgetModel::~FeedWidgetModel()
	{
	}
	
	void FeedWidgetModel::setCurrentFeed(Feed* f)
	{
		items.clear();
		disconnect(feed,SIGNAL(updated()),this,SLOT(updated()));
		feed = f;
		Syndication::FeedPtr ptr = feed->feedData();
		if (ptr)
			items = ptr->items();
		connect(feed,SIGNAL(updated()),this,SLOT(updated()));
		reset();
	}

	int FeedWidgetModel::rowCount(const QModelIndex & parent) const
	{
		if (!parent.isValid())
			return items.count();
		else
			return 0;
	}
	
	int FeedWidgetModel::columnCount(const QModelIndex & parent) const
	{
		if (!parent.isValid())
			return 3;
		else
			return 0;
	}
	
	QVariant FeedWidgetModel::headerData(int section, Qt::Orientation orientation,int role) const
	{
		if (role != Qt::DisplayRole || section < 0 || section >= 3 || orientation != Qt::Horizontal)
			return QVariant();
		
		switch (section)
		{
			case 0: return i18n("Title");
			case 1: return i18n("Date Published");
			case 2: return i18n("Torrent");
			default:
				return QVariant();
		}
	}
	
	QVariant FeedWidgetModel::data(const QModelIndex & index, int role) const
	{
		if (!index.isValid())
			return QVariant();
		
		if (index.row() < 0 || index.row() >= items.count())
			return QVariant();
		
		Syndication::ItemPtr item = items.at(index.row());
		if (role == Qt::DisplayRole)
		{
			switch (index.column())
			{
				case 0: return item->title();
				case 1: return QDateTime::fromTime_t(item->datePublished());
				case 2: return TorrentUrlFromItem(item);
				default:
					return QVariant();
			}
		}
		else if (role == Qt::DecorationRole && index.column() == 0 && feed->downloaded(item))
			return KIcon("go-down");
		
		return QVariant();
	}
	
	bool FeedWidgetModel::removeRows(int row,int count,const QModelIndex & parent)
	{
		Q_UNUSED(parent);
		beginRemoveRows(QModelIndex(),row,row + count - 1);
		endRemoveRows();
		return true;
	}
	
	bool FeedWidgetModel::insertRows(int row,int count,const QModelIndex & parent)
	{
		Q_UNUSED(parent);
		beginInsertRows(QModelIndex(),row,row + count - 1);
		endInsertRows();
		return true;
	}
	
	Syndication::ItemPtr FeedWidgetModel::itemForIndex(const QModelIndex & index)
	{
		if (index.row() < 0 || index.row() >= items.count())
			return Syndication::ItemPtr();
		
		return items.at(index.row());
	}
	
	QString TorrentUrlFromItem(Syndication::ItemPtr item)
	{
		QList<Syndication::EnclosurePtr> encs = item->enclosures();
		foreach (Syndication::EnclosurePtr e,encs)
		{
			if (e->type() == "application/x-bittorrent")
				return e->url();
		}
		
		return QString();
	}
	
	void FeedWidgetModel::updated()
	{
		items.clear();
		Syndication::FeedPtr ptr = feed->feedData();
		if (ptr)
			items = ptr->items();
		
		reset();
	}
}
