/*
 * 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
 */

#ifndef SEARCH_H
#define SEARCH_H

#include <QProcess>
#include <QList>
#include <QPair>
#include <QPointer>
#include <QStringListModel>
#include "ui_search.h"
#include "engineselectdlg.h"
#include "searchtab.h"
#include "supportedengines.h"

class SearchEngine;
class MainWindow;
class LineEdit;

QT_BEGIN_NAMESPACE
class QTimer;
QT_END_NAMESPACE

class SearchEngine : public QWidget, public Ui::search_engine{
    Q_OBJECT
    Q_DISABLE_COPY(SearchEngine)

private:
    enum PluginColumn { PL_DL_LINK, PL_NAME, PL_SIZE, PL_SEEDS, PL_LEECHS, PL_ENGINE_URL, PL_DESC_LINK, NB_PLUGIN_COLUMNS };

public:
    SearchEngine(MainWindow *mp_mainWindow);
    ~SearchEngine();
    QString selectedCategory() const;
    QString selectedEngine() const;

    static qreal getPluginVersion(QString filePath) {
        QFile plugin(filePath);
        if (!plugin.exists()) {
            qDebug("%s plugin does not exist, returning 0.0", qPrintable(filePath));
            return 0.0;
        }
        if (!plugin.open(QIODevice::ReadOnly | QIODevice::Text)) {
            return 0.0;
        }
        qreal version = 0.0;
        while (!plugin.atEnd()) {
            QByteArray line = plugin.readLine();
            if (line.startsWith("#VERSION: ")) {
                line = line.split(' ').last().trimmed();
                version = line.toFloat();
                qDebug("plugin %s version: %.2f", qPrintable(filePath), version);
                break;
            }
        }
        return version;
    }

public slots:
    void on_download_button_clicked();
    void downloadTorrent(QString engine_url, QString torrent_url);
    void giveFocusToSearchInput();

protected slots:
    // Search slots
    void tab_changed(int);//to prevent the use of the download button when the tab is empty
    void on_search_button_clicked();
    void closeTab(int index);
    void appendSearchResult(const QString &line);
    void searchFinished(int exitcode,QProcess::ExitStatus);
    void readSearchOutput();
    void searchStarted();
    void updateNova();
    void selectMultipleBox(const QString &text);
    void on_enginesButton_clicked();
    void saveResultsColumnsWidth();
    void downloadFinished(int exitcode, QProcess::ExitStatus);
    void fillCatCombobox();
    void fillEngineComboBox();
    void searchTextEdited(QString);

private slots:
    void on_goToDescBtn_clicked();

private:
    // Search related
    LineEdit* search_pattern;
    QProcess *searchProcess;
    QList<QProcess*> downloaders;
    bool search_stopped;
    bool no_search_results;
    QByteArray search_result_line_truncated;
    unsigned long nb_search_results;
    SupportedEngines *supported_engines;
    QTimer *searchTimeout;
    QPointer<SearchTab> currentSearchTab; // Selected tab
    QPointer<SearchTab> activeSearchTab; // Tab with running search
    QList<QPointer<SearchTab> > all_tab; // To store all tabs
    const SearchCategories full_cat_names;
    MainWindow *mp_mainWindow;
    inline void allTabsSetActiveState(bool);
};

#endif