/****************************************************************
 *  RetroShare is distributed under the following license:
 *
 *  Copyright (C) 2006 - 2009 RetroShare Team
 *
 *  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 "DirectoriesPage.h"
#include "gui/ShareManager.h"
#include <QMessageBox>

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

#include <algorithm>

DirectoriesPage::DirectoriesPage(QWidget * parent, Qt::WFlags flags)
    : ConfigPage(parent, flags)
{
    ui.setupUi(this);
    setAttribute(Qt::WA_QuitOnClose, false);

    if (rsFiles->getShareDownloadDirectory())
    {
        ui.checkBox->setChecked(true);		/* signal not emitted */
    }
    else
    {
        ui.checkBox->setChecked(false);	/* signal not emitted */
    }

	 uint32_t t = rsFiles->rememberHashFilesDuration() ;
	 bool b = rsFiles->rememberHashFiles() ;

	 ui.rememberHashesSB->setValue(t) ;
	 ui.rememberHashesCB->setChecked(b) ;

    connect(ui.incomingButton, SIGNAL(clicked( bool ) ), this , SLOT( setIncomingDirectory() ) );
    connect(ui.partialButton, SIGNAL(clicked( bool ) ), this , SLOT( setPartialsDirectory() ) );
    connect(ui.checkBox, SIGNAL(stateChanged(int)), this, SLOT(shareDownloadDirectory(int)));
    connect(ui.editButton, SIGNAL(clicked()), this, SLOT(editDirectories()));
    connect(ui.cleanHashCachePB, SIGNAL(clicked()), this, SLOT(clearHashCache()));
    connect(ui.rememberHashesCB, SIGNAL(toggled(bool)), this, SLOT(toggleRememberHashes(bool)));
    connect(ui.rememberHashesSB, SIGNAL(valueChanged(int)), this, SLOT(setRememberHashesDuration(int)));

  /* Hide platform specific features */
#ifdef Q_WS_WIN

#endif
}

void DirectoriesPage::setRememberHashesDuration(int d)
{
	rsFiles->setRememberHashFilesDuration(d) ;
}

void DirectoriesPage::toggleRememberHashes(bool b)
{
	if(!b)
	{
		if(QMessageBox::question(NULL,"Cache cleaning confirmation","The will forget any former hash of non shared files. Do you confirm ?") == QMessageBox::Ok)
		{
			rsFiles->clearHashCache() ;
			rsFiles->setRememberHashFiles(b) ;
			ui.rememberHashesSB->setEnabled(false) ;
			ui.cleanHashCachePB->setEnabled(false) ;
		}
		else
			ui.rememberHashesCB->setChecked(true) ;
	}
	else
	{
		rsFiles->setRememberHashFiles(true) ;
		ui.rememberHashesSB->setEnabled(true) ;
		ui.cleanHashCachePB->setEnabled(true) ;
	}
}


void DirectoriesPage::clearHashCache()
{
	if(QMessageBox::question(NULL,"Cache cleaning confirmation","The will forget any former hash of non shared files. Do you confirm ?", QMessageBox::Ok | QMessageBox::Cancel) == QMessageBox::Ok)
		rsFiles->clearHashCache() ;
}

void
DirectoriesPage::closeEvent (QCloseEvent * event)
{
    QWidget::closeEvent(event);
}

void DirectoriesPage::editDirectories()
{
	ShareManager::showYourself() ;
}

/** Saves the changes on this page */
bool DirectoriesPage::save(QString &errmsg)
{
	/* this is usefull especially when shared incoming files is
	 * default option and when the user don't check/uncheck the
	 * checkBox, so no signal is emitted to update the shared list */
	if (ui.checkBox->isChecked())
	{
		std::list<SharedDirInfo>::const_iterator it;
		std::list<SharedDirInfo> dirs;
		rsFiles->getSharedDirectories(dirs);

		bool found = false ;
		for(std::list<SharedDirInfo>::const_iterator it(dirs.begin());it!=dirs.end();++it)
			if((*it).filename == rsFiles->getDownloadDirectory())
			{
				found=true ;
				break ;
			}
		if(!found)
			rsFiles->shareDownloadDirectory();

		rsFiles->setShareDownloadDirectory(true);
	}
	else
	{
		rsFiles->unshareDownloadDirectory();
		rsFiles->setShareDownloadDirectory(false);
	}

	return true;
}

/** Loads the settings for this page */
void DirectoriesPage::load()
{
	std::list<SharedDirInfo>::const_iterator it;
	std::list<SharedDirInfo> dirs;
	rsFiles->getSharedDirectories(dirs);

	/* get a link to the table */
	QListWidget *listWidget = ui.dirList;

	/* save current index */
	QModelIndex rootIndex = listWidget->rootIndex();

	/* remove old items ??? */
	listWidget->clear();

	for(it = dirs.begin(); it != dirs.end(); it++)
	{
		/* (0) Dir Name */
		listWidget->addItem(QString::fromUtf8((*it).filename.c_str()));
	}

	/* set saved index */
	listWidget->setCurrentIndex(rootIndex);

	ui.incomingDir->setText(QString::fromUtf8(rsFiles->getDownloadDirectory().c_str()));
	ui.partialsDir->setText(QString::fromUtf8(rsFiles->getPartialsDirectory().c_str()));

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

void DirectoriesPage::setIncomingDirectory()
{
	QString qdir = QFileDialog::getExistingDirectory(this, tr("Set Incoming Directory"), "", QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks);

	std::string dir = qdir.toUtf8().constData();
	if (dir != "")
	{
		rsFiles->setDownloadDirectory(dir);
		if (ui.checkBox->isChecked())
		{
			std::list<SharedDirInfo>::const_iterator it;
			std::list<SharedDirInfo> dirs;
			rsFiles->getSharedDirectories(dirs);

			bool found = false ;
			for(std::list<SharedDirInfo>::const_iterator it(dirs.begin());it!=dirs.end();++it)
				if((*it).filename == rsFiles->getDownloadDirectory())
				{
					found=true ;
					break ;
				}
			if(!found)
				rsFiles->shareDownloadDirectory();
		}
	}
	load();
}

void DirectoriesPage::setPartialsDirectory()
{
	QString qdir = QFileDialog::getExistingDirectory(this, tr("Set Partials Directory"), "", QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks);

	std::string dir = qdir.toUtf8().constData();
	if (dir != "")
	{
		rsFiles->setPartialsDirectory(dir);
	}
	load();
}

void DirectoriesPage::shareDownloadDirectory(int state)
{
	if (state == Qt::Checked)
	{
		std::list<SharedDirInfo>::const_iterator it;
		std::list<SharedDirInfo> dirs;
		rsFiles->getSharedDirectories(dirs);

		bool found = false ;
		for(std::list<SharedDirInfo>::const_iterator it(dirs.begin());it!=dirs.end();++it)
			if((*it).filename == rsFiles->getDownloadDirectory())
			{
				found=true ;
				break ;
			}
		if(!found)
			rsFiles->shareDownloadDirectory();

		rsFiles->setShareDownloadDirectory(true);
	}
	else
	{
		rsFiles->unshareDownloadDirectory();
		rsFiles->setShareDownloadDirectory(false);
	}
	load();
}