/*******************************************************************************
 * gui/settings/CryptoPage.cpp                                                 *
 *                                                                             *
 * Copyright 2006, Retroshare Team <retroshare.project@gmail.com>              *
 *                                                                             *
 * This program is free software: you can redistribute it and/or modify        *
 * it under the terms of the GNU Affero General Public License as              *
 * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.                         *
 *                                                                             *
 * You should have received a copy of the GNU Affero General Public License    *
 * along with this program. If not, see <https://www.gnu.org/licenses/>.       *
 *                                                                             *
 *******************************************************************************/

#include <QDate>
#include <QMessageBox>
#include <QClipboard>
#include <QFile>
#include <QTextStream>
#include <QTextCodec>

#include "rshare.h"
#include "CryptoPage.h"
#include "util/misc.h"
#include "util/DateTime.h"
#include "retroshare/rsinit.h"
#include <gui/RetroShareLink.h>
#include <gui/connect/ConfCertDialog.h>
#include <gui/profile/ProfileManager.h>
#include <gui/statistics/StatisticsWindow.h>
#include <gui/common/NewFriendList.h>

#include <retroshare/rspeers.h> //for rsPeers variable
#include <retroshare/rsdisc.h> //for rsPeers variable

/** Constructor */
CryptoPage::CryptoPage(QWidget * parent, Qt::WindowFlags flags)
    : ConfigPage(parent, flags)
{
	/* Invoke the Qt Designer generated object setup routine */
	ui.setupUi(this);

	ui._shortFormat_CB->setChecked(true);

	//  connect(ui.copykeyButton, SIGNAL(clicked()), this, SLOT(copyPublicKey()));
	connect(ui.saveButton, SIGNAL(clicked()), this, SLOT(fileSaveAs()));
	connect(ui._includeSignatures_CB, SIGNAL(toggled(bool)), this, SLOT(load()));
	connect(ui._shortFormat_CB, SIGNAL(toggled(bool)), this, SLOT(load()));
	connect(ui._includeAllIPs_CB, SIGNAL(toggled(bool)), this, SLOT(load()));
	connect(ui._copyLink_PB, SIGNAL(clicked()), this, SLOT(copyRSLink()));
	connect(ui.showStats_PB, SIGNAL(clicked()), this, SLOT(showStats()));

	// hide profile manager as it causes bugs when generating a new profile.
	//ui.profile_Button->hide() ;

	//connect(ui.exportprofile,SIGNAL(clicked()), this, SLOT(profilemanager()));
	connect(ui.exportprofile,SIGNAL(clicked()), this, SLOT(exportProfile()));
	connect(ui.exportfriendslist,SIGNAL(clicked()), this, SLOT(exportFriendsList()) );

    // Remove this because it duplicates functionality of the HomePage.
    ui.retroshareId_LB->hide();
    ui.retroshareId_content_LB->hide();
    ui.stackPageCertificate->hide();

	ui.onlinesince->setText(DateTime::formatLongDateTime(RsApplication::startupTime()));
}

#ifdef UNUSED_CODE
void CryptoPage::profilemanager()
{
    ProfileManager().exec();
}
#endif

void CryptoPage::exportProfile()
{
    RsPgpId gpgId(rsPeers->getGPGOwnId());

    QString fname = QFileDialog::getSaveFileName(this, tr("Export Identity"), "", tr("RetroShare Identity files (*.asc)"));

    if (fname.isNull())
        return;

    if (fname.right(4).toUpper() != ".ASC") fname += ".asc";

    if (RsAccounts::ExportIdentity(fname.toUtf8().constData(), gpgId))
        QMessageBox::information(this, tr("Identity saved"), tr("Your identity was successfully saved\nIt is encrypted\n\nYou can now copy it to another computer\nand use the import button to load it"));
    else
        QMessageBox::information(this, tr("Identity not saved"), tr("Your identity was not saved. An error occurred."));
}

void CryptoPage::showEvent ( QShowEvent * /*event*/ )
{
    RsPeerDetails detail;
    if (rsPeers->getPeerDetails(rsPeers->getOwnId(),detail))
    {
        ui.name->setText(QString::fromUtf8(detail.name.c_str()));
        ui.country->setText(QString::fromUtf8(detail.location.c_str()));

        ui.peerid->setText(QString::fromStdString(detail.id.toStdString()));
        ui.pgpid->setText(QString::fromStdString(detail.gpg_id.toStdString()));
        ui.pgpfingerprint->setText(misc::fingerPrintStyleSplit(QString::fromStdString(detail.fpr.toStdString())));

        std::string invite ;
        rsPeers->getShortInvite(invite,rsPeers->getOwnId(),RetroshareInviteFlags::RADIX_FORMAT | RsPeers::defaultCertificateFlags);
        ui.retroshareId_content_LB->setText(QString::fromUtf8(invite.c_str()));
		
        /* [Modified] Show both RetroShare and libretroshare versions */
        /* We rename the label "Software Version:" to "RetroShare version:" and add the lbretroshare line */
        /* Using newlines (\n) allows us to display both without modifying the .ui grid layout */
        ui.label_3->setText(tr("RetroShare version:") + "\n" + tr("libretroshare version:"));

        QString versionText = RsApplication::retroshareVersion(true);
        versionText += "\n";
        versionText += QString::fromUtf8(RsInit::libRetroShareVersion());
        ui.version->setText(versionText);

        std::list<RsPgpId> ids;
        ids.clear();
        rsPeers->getGPGAcceptedList(ids);
        int friends = ids.size();

        ui.friendsEdit->setText(QString::number(friends));
		
		QString string ;
		string = rsFiles->getPartialsDirectory().c_str();
		QString datadir = string;
			if(datadir.contains("Partials"))
			{
				datadir.replace("Partials","");
			}
				ui.labelpath->setText(datadir);
    }
	 load() ;
}

CryptoPage::~CryptoPage()
{
}

/** Loads the settings for this page */
void
CryptoPage::load()
{
    std::string cert ;
    RetroshareInviteFlags flags = RetroshareInviteFlags::DNS | RetroshareInviteFlags::CURRENT_LOCAL_IP | RetroshareInviteFlags::CURRENT_EXTERNAL_IP;

    if(ui._shortFormat_CB->isChecked())
    {
        if(ui._includeAllIPs_CB->isChecked())
            flags |= RetroshareInviteFlags::FULL_IP_HISTORY;

        rsPeers->getShortInvite(cert,rsPeers->getOwnId(), RetroshareInviteFlags::RADIX_FORMAT | flags);
    }
	else
    {
        if(ui._includeSignatures_CB->isChecked())
            flags |= RetroshareInviteFlags::PGP_SIGNATURES;

        cert = rsPeers->GetRetroshareInvite( rsPeers->getOwnId(), flags);
    }

	ui.certplainTextEdit->setPlainText( QString::fromUtf8( cert.c_str() ) );

    RsPeerDetails detail;
    rsPeers->getPeerDetails(rsPeers->getOwnId(),detail);

    ui.certplainTextEdit->setToolTip(ConfCertDialog::getCertificateDescription(detail, ui._includeSignatures_CB->isChecked(), ui._shortFormat_CB->isChecked(), flags));
}

void
CryptoPage::copyRSLink()
{
	RsPeerId ownId = rsPeers->getOwnId() ;
	RetroShareLink link = RetroShareLink::createCertificate(ownId);

	if( link.valid() )
	{
		QList<RetroShareLink> urls ;

		urls.push_back(link) ;
		RSLinkClipboard::copyLinks(urls) ;
		QMessageBox::information(this,
				"RetroShare",
				tr("A RetroShare link with your Public Key is copied to Clipboard, paste and send it to your"
					" friend via email or some other way"));
	}
	else
		QMessageBox::warning(this,
				tr("Error"),
				tr("Your certificate could not be parsed correctly. Please contact the developers."));
}
void
CryptoPage::copyPublicKey()
{
    QMessageBox::information(this,
                             tr("RetroShare"),
                             tr("Your Public Key is copied to Clipboard, paste and send it to your"
                                " friend via email or some other way"));
    QClipboard *clipboard = QApplication::clipboard();
    clipboard->setText(ui.certplainTextEdit->toPlainText());
}

bool CryptoPage::fileSave()
{
    if (fileName.isEmpty())
        return fileSaveAs();

    QFile file(fileName);
    if (!file.open(QFile::WriteOnly))
        return false;
    QTextStream ts(&file);
#if QT_VERSION >= QT_VERSION_CHECK (6, 0, 0)
    ts.setEncoding(QStringConverter::Utf8);
#else
    ts.setCodec(QTextCodec::codecForName("UTF-8"));
#endif
    ts << ui.certplainTextEdit->document()->toPlainText();
    return true;
}

bool CryptoPage::fileSaveAs()
{
    QString fn;
    if (misc::getSaveFileName(this, RshareSettings::LASTDIR_CERT, tr("Save as..."), tr("RetroShare Certificate (*.rsc );;All Files (*)"), fn)) {
        fileName = fn;
        return fileSave();
    }
    return false;
}

void CryptoPage::showStats()
{
    StatisticsWindow::showYourself();
}

void CryptoPage::exportFriendsList()
{
	NewFriendList().exportFriendlistClicked();
}