/****************************************************************
 *  RetroShare is distributed under the following license:
 *
 *  Copyright (C) 2006, 2007 crypton
 *
 *  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 "ShareManager.h"

#include <retroshare/rsfiles.h>
#include "ShareDialog.h"

#include <QContextMenuEvent>
#include <QMenu>
#include <QCheckBox>
#include <QCursor>
#include <QPoint>
#include <QHeaderView>
#include <QMessageBox>

/* Images for context menu icons */
#define IMAGE_CANCEL               ":/images/delete.png"

#define COLUMN_PATH         0
#define COLUMN_VIRTUALNAME  1
#define COLUMN_NETWORKWIDE  2
#define COLUMN_BROWSABLE    3

ShareManager *ShareManager::_instance = NULL ;

/** Default constructor */
ShareManager::ShareManager(QWidget *parent, Qt::WFlags flags)
  : QDialog(parent, flags)
{
    /* Invoke Qt Designer generated QObject setup routine */
    ui.setupUi(this);

    isLoading = false;
    load();

    connect(ui.addButton, SIGNAL(clicked( bool ) ), this , SLOT( showShareDialog() ) );
    connect(ui.removeButton, SIGNAL(clicked( bool ) ), this , SLOT( removeShareDirectory() ) );
    connect(ui.closeButton, SIGNAL(clicked()), this, SLOT(close()));

    connect( ui.shareddirList, SIGNAL( customContextMenuRequested( QPoint ) ), this, SLOT( shareddirListCostumPopupMenu( QPoint ) ) );

    ui.addButton->setToolTip(tr("Add a Share Directory"));
    ui.removeButton->setToolTip(tr("Stop sharing selected Directory"));

    ui.shareddirList->horizontalHeader()->setResizeMode( COLUMN_PATH, QHeaderView::Stretch);
    ui.shareddirList->horizontalHeader()->setResizeMode( COLUMN_BROWSABLE, QHeaderView::Interactive);

    ui.shareddirList->horizontalHeader()->resizeSection( COLUMN_PATH, 360 );
    ui.shareddirList->horizontalHeader()->setStretchLastSection(false);

    setAttribute(Qt::WA_DeleteOnClose, true);
}

ShareManager::~ShareManager()
{
    _instance = NULL;
}

void ShareManager::shareddirListCostumPopupMenu( QPoint point )
{
    QMenu contextMnu( this );

    removeAct = new QAction(QIcon(IMAGE_CANCEL), tr( "Remove" ), this );
    connect( removeAct , SIGNAL( triggered() ), this, SLOT( removeShareDirectory() ) );

    contextMnu.addAction( removeAct );

    contextMnu.exec(QCursor::pos());
}

/** Loads the settings for this page */
void ShareManager::load()
{
    isLoading = true;
    std::cerr << "ShareManager:: In load !!!!!" << std::endl ;

    std::list<SharedDirInfo>::const_iterator it;
    std::list<SharedDirInfo> dirs;
    rsFiles->getSharedDirectories(dirs);

    /* get a link to the table */
    QTableWidget *listWidget = ui.shareddirList;

    /* set new row count */
    listWidget->setRowCount(dirs.size());

    connect(this,SIGNAL(itemClicked(QTableWidgetItem*)),this,SLOT(updateFlags(QTableWidgetItem*))) ;

#ifndef USE_COMBOBOX
    QString ToolTips [2] = { QString("If checked, the share is anonymously shared to anybody."),
                             QString("If checked, the share is browsable by your friends.") };
    int Flags [2] = { RS_FILE_HINTS_NETWORK_WIDE, RS_FILE_HINTS_BROWSABLE };
#endif

    int row=0 ;
    for(it = dirs.begin(); it != dirs.end(); it++,++row)
    {
        listWidget->setItem(row, COLUMN_PATH, new QTableWidgetItem(QString::fromUtf8((*it).filename.c_str())));
        listWidget->setItem(row, COLUMN_VIRTUALNAME, new QTableWidgetItem(QString::fromUtf8((*it).virtualname.c_str())));

#ifdef USE_COMBOBOX
        QComboBox *cb = new QComboBox ;
        cb->addItem(QString("Network Wide")) ;
        cb->addItem(QString("Browsable")) ;
        cb->addItem(QString("Universal")) ;

        cb->setToolTip(QString("Decide here whether this directory is\n* Network Wide: \tanonymously shared over the network (including your friends)\n* Browsable: \tbrowsable by your friends\n* Universal: \t\tboth")) ;

        // TODO
        //  - set combobox current value depending on what rsFiles reports.
        //  - use a signal mapper to get the correct row that contains the combo box sending the signal:
        //  		mapper = new SignalMapper(this) ;
        //
        //  		for(all cb)
        //  		{
        //  			signalMapper->setMapping(cb,...)
        //  		}
        //
        int index = 0 ;
        index += ((*it).shareflags & RS_FILE_HINTS_NETWORK_WIDE) > 0 ;
        index += (((*it).shareflags & RS_FILE_HINTS_BROWSABLE) > 0) * 2 ;
        listWidget->setCellWidget(row,1,cb);

        if(index < 1 || index > 3)
            std::cerr << "******* ERROR IN FILE SHARING FLAGS. Flags = " << (*it).shareflags << " ***********" << std::endl ;
        else
            index-- ;

        cb->setCurrentIndex(index) ;
#else
        int col;
        for (col = 0; col <= 1; col++) {
            QModelIndex index = listWidget->model()->index(row, col + COLUMN_NETWORKWIDE, QModelIndex());
            QCheckBox *cb = (QCheckBox*) listWidget->indexWidget(index);
            if (cb == NULL) {
                cb = new QCheckBox;
                cb->setToolTip(ToolTips [col]);
                listWidget->setCellWidget(row, col + COLUMN_NETWORKWIDE, cb);

                QObject::connect(cb, SIGNAL(toggled(bool)), this, SLOT(updateFlags(bool))) ;
            }
            cb->setChecked((*it).shareflags & Flags [col]);
        }
#endif
    }

    //ui.incomingDir->setText(QString::fromStdString(rsFiles->getDownloadDirectory()));

    listWidget->update(); /* update display */
    update();

    isLoading = false ;
}

void ShareManager::showYourself()
{
    if(_instance == NULL)
        _instance = new ShareManager(NULL,0) ;

    _instance->show() ;
    _instance->activateWindow();
}

/*static*/ void ShareManager::postModDirectories(bool update_local)
{
   if (_instance == NULL || _instance->isHidden()) {
       return;
   }

   if (update_local) {
       _instance->load();
   }
}

void ShareManager::updateFlags(bool b)
{
    if(isLoading)
        return ;

    std::cerr << "Updating flags (b=" << b << ") !!!" << std::endl ;

    std::list<SharedDirInfo>::iterator it;
    std::list<SharedDirInfo> dirs;
    rsFiles->getSharedDirectories(dirs);

    int row=0 ;
    for(it = dirs.begin(); it != dirs.end(); it++,++row)
    {
        std::cerr << "Looking for row=" << row << ", file=" << (*it).filename << ", flags=" << (*it).shareflags << std::endl ;
        uint32_t current_flags = 0 ;
        current_flags |= (dynamic_cast<QCheckBox*>(ui.shareddirList->cellWidget(row,COLUMN_NETWORKWIDE)))->isChecked()? RS_FILE_HINTS_NETWORK_WIDE:0 ;
        current_flags |= (dynamic_cast<QCheckBox*>(ui.shareddirList->cellWidget(row,COLUMN_BROWSABLE)))->isChecked()? RS_FILE_HINTS_BROWSABLE:0 ;

        if( (*it).shareflags ^ current_flags )
        {
            (*it).shareflags = current_flags ;
            rsFiles->updateShareFlags(*it) ;	// modifies the flags

            std::cout << "Updating share flags for directory " << (*it).filename << std::endl ;
        }
    }
}

void ShareManager::removeShareDirectory()
{
    /* id current dir */
    /* ask for removal */
    QTableWidget *listWidget = ui.shareddirList;
    int row = listWidget -> currentRow();
    QTableWidgetItem *qdir = listWidget->item(row, COLUMN_PATH);

    QString queryWrn;
    queryWrn.clear();
    queryWrn.append(tr("Do you really want to stop sharing this directory ?"));

    if (qdir)
    {
        if ((QMessageBox::question(this, tr("Warning!"),queryWrn,QMessageBox::Yes|QMessageBox::No, QMessageBox::Yes))== QMessageBox::Yes)
        {
            rsFiles->removeSharedDirectory( qdir->text().toUtf8().constData());
            load();
        }
    }
}

void ShareManager::showEvent(QShowEvent *event)
{
    if (!event->spontaneous())
    {
        load();
    }
}

void ShareManager::showShareDialog()
{
    ShareDialog sharedlg (this);
    sharedlg.exec();
}