/*
 * Bittorrent Client using Qt4 and libtorrent.
 * Copyright (C) 2006  Christophe Dumez
 *
 * 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.
 *
 * In addition, as a special exception, the copyright holders give permission to
 * link this program with the OpenSSL project's "OpenSSL" library (or with
 * modified versions of it that use the same license as the "OpenSSL" library),
 * and distribute the linked executables. You must obey the GNU General Public
 * License in all respects for all of the code used other than "OpenSSL".  If you
 * modify file(s), you may extend this exception to your version of the file(s),
 * but you are not obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 *
 * Contact : chris@qbittorrent.org
 */

#include <QDir>
#include <QTreeView>
#include <QStandardItemModel>
#include <QHeaderView>
#include <QSettings>
#include <QSortFilterProxyModel>

#include "searchtab.h"
#include "searchlistdelegate.h"
#include "misc.h"
#include "searchengine.h"

#define SEARCH_NAME 0
#define SEARCH_SIZE 1
#define SEARCH_SEEDERS 2
#define SEARCH_LEECHERS 3
#define SEARCH_ENGINE 4

SearchTab::SearchTab(SearchEngine *parent) : QWidget(), parent(parent)
{
  box=new QVBoxLayout();
  results_lbl=new QLabel();
  resultsBrowser = new QTreeView();
  resultsBrowser->setSelectionMode(QAbstractItemView::ExtendedSelection);
  box->addWidget(results_lbl);
  box->addWidget(resultsBrowser);

  setLayout(box);
  // Set Search results list model
  SearchListModel = new QStandardItemModel(0,6);
  SearchListModel->setHeaderData(SEARCH_NAME, Qt::Horizontal, tr("Name", "i.e: file name"));
  SearchListModel->setHeaderData(SEARCH_SIZE, Qt::Horizontal, tr("Size", "i.e: file size"));
  SearchListModel->setHeaderData(SEARCH_SEEDERS, Qt::Horizontal, tr("Seeders", "i.e: Number of full sources"));
  SearchListModel->setHeaderData(SEARCH_LEECHERS, Qt::Horizontal, tr("Leechers", "i.e: Number of partial sources"));
  SearchListModel->setHeaderData(SEARCH_ENGINE, Qt::Horizontal, tr("Search engine"));

  proxyModel = new QSortFilterProxyModel();
  proxyModel->setDynamicSortFilter(true);
  proxyModel->setSourceModel(SearchListModel);
  resultsBrowser->setModel(proxyModel);

  SearchDelegate = new SearchListDelegate();
  resultsBrowser->setItemDelegate(SearchDelegate);

  resultsBrowser->hideColumn(URL_COLUMN); // Hide url column

  resultsBrowser->setRootIsDecorated(false);
  resultsBrowser->setAllColumnsShowFocus(true);
  resultsBrowser->setSortingEnabled(true);

  // Connect signals to slots (search part)
  connect(resultsBrowser, SIGNAL(doubleClicked(const QModelIndex&)), this, SLOT(downloadSelectedItem(const QModelIndex&)));

  // Load last columns width for search results list
  if(!loadColWidthResultsList()){
    resultsBrowser->header()->resizeSection(0, 275);
  }

  // Sort by Seeds
  resultsBrowser->sortByColumn(SEEDERS, Qt::DescendingOrder);
}

void SearchTab::downloadSelectedItem(const QModelIndex& index) {
  QString engine_url = proxyModel->data(proxyModel->index(index.row(), ENGINE_URL_COLUMN)).toString();
  QString torrent_url = proxyModel->data(proxyModel->index(index.row(), URL_COLUMN)).toString();
  setRowColor(index.row(), "red");
  parent->downloadTorrent(engine_url, torrent_url);
}

SearchTab::~SearchTab() {
  delete box;
  delete results_lbl;
  delete resultsBrowser;
  delete SearchListModel;
  delete proxyModel;
  delete SearchDelegate;
}

QHeaderView* SearchTab::header() const {
  return resultsBrowser->header();
}

bool SearchTab::loadColWidthResultsList() {
  QSettings settings("qBittorrent", "qBittorrent");
  QString line = settings.value("SearchResultsColsWidth", QString()).toString();
  if(line.isEmpty())
    return false;
  QStringList width_list = line.split(' ');
  if(width_list.size() < SearchListModel->columnCount())
    return false;
  unsigned int listSize = width_list.size();
  for(unsigned int i=0; i<listSize; ++i){
    resultsBrowser->header()->resizeSection(i, width_list.at(i).toInt());
  }
  return true;
}

QLabel* SearchTab::getCurrentLabel()
{
  return results_lbl;
}

QTreeView* SearchTab::getCurrentTreeView()
{
  return resultsBrowser;
}

QSortFilterProxyModel* SearchTab::getCurrentSearchListProxy() const
{
  return proxyModel;
}

QStandardItemModel* SearchTab::getCurrentSearchListModel() const
{
  return SearchListModel;
}

// Set the color of a row in data model
void SearchTab::setRowColor(int row, QString color){
  proxyModel->setDynamicSortFilter(false);
  for(int i=0; i<proxyModel->columnCount(); ++i){
    proxyModel->setData(proxyModel->index(row, i), QVariant(QColor(color)), Qt::ForegroundRole);
  }
  proxyModel->setDynamicSortFilter(true);
}