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/*
   Copyright (C) 2004 George Staikos <staikos@kde.org>

   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; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
 */


#include "knetattach.h"

#include <QVariant>

#include <KIO/NetAccess>
#include <KMessageBox>
#include <QIcon>
#include <KLocale>
#include <KGlobalSettings>
#include <KConfig>
#include <KConfigGroup>
#include <KStandardDirs>
#include <KDirNotify>
#include <KCharsets>
#include <KDebug>
#include <KRun>
#include <KToolInvocation>
#include <KGlobal>
#include <QDesktopServices>
#include <QTextCodec>

KNetAttach::KNetAttach( QWidget* parent )
    : QWizard( parent ), Ui_KNetAttach()
{
    setupUi( this );

    connect(_recent, &QAbstractButton::toggled, _recentConnectionName, &QWidget::setEnabled);
    connect(_connectionName, &QLineEdit::textChanged, this, &KNetAttach::updateParametersPageStatus);
    connect(_user, &QLineEdit::textChanged, this, &KNetAttach::updateParametersPageStatus);
    connect(_host, &QLineEdit::textChanged, this, &KNetAttach::updateParametersPageStatus);
    connect(_port, (void (QSpinBox::*)(int))&QSpinBox::valueChanged, this, &KNetAttach::updateParametersPageStatus);
    connect(_path, &QLineEdit::textChanged, this, &KNetAttach::updateParametersPageStatus);
    connect(_useEncryption, &QAbstractButton::toggled, this, &KNetAttach::updatePort);
    connect(_createIcon, &QAbstractButton::toggled, this, &KNetAttach::updateFinishButtonText);
    connect( this, &QWizard::helpRequested, this, &KNetAttach::slotHelpClicked );
    connect( this, &QWizard::currentIdChanged, this, &KNetAttach::slotPageChanged );
    setWindowIcon(QIcon::fromTheme(QStringLiteral("knetattach")));
    setOption(HaveHelpButton, true);
    //setResizeMode(Fixed); FIXME: make the wizard fixed-geometry
    button(FinishButton)->setEnabled(false);
    KConfig crecent( QStringLiteral("krecentconnections"), KConfig::NoGlobals  );
    KConfigGroup recent(&crecent, "General");
    QStringList idx = recent.readEntry("Index",QStringList());
    if (idx.isEmpty()) {
        _recent->setEnabled(false);
        if (_recent->isChecked()) {
            _webfolder->setChecked(true);
        }
    } else {
        _recent->setEnabled(true);
        _recentConnectionName->addItems(idx);
    }
    _encoding->clear();
    _encoding->addItems(KCharsets::charsets()->descriptiveEncodingNames());
    const int codecForLocaleIdx = _encoding->findText(QString::fromLatin1(QTextCodec::codecForLocale()->name()), Qt::MatchContains);
    _encoding->setCurrentIndex(codecForLocaleIdx != -1 ? codecForLocaleIdx : 0);
}

void KNetAttach::slotPageChanged( int )
{
    updateFinishButtonText(true);
}

void KNetAttach::slotHelpClicked()
{
    QDesktopServices::openUrl(QUrl(QStringLiteral("help:/knetattach")));
}

void KNetAttach::setInformationText( const QString &type )
{
    QString text;

    if (type==QLatin1String("WebFolder")) {
        text = i18n("Enter a name for this <i>WebFolder</i> as well as a server address, port and folder path to use and press the <b>Save & Connect</b> button.");
    } else if (type==QLatin1String("Fish")) {
        text = i18n("Enter a name for this <i>Secure shell connection</i> as well as a server address, port and folder path to use and press the <b>Save & Connect</b> button.");
    } else if (type==QLatin1String("FTP")) {
        text = i18n("Enter a name for this <i>File Transfer Protocol connection</i> as well as a server address and folder path to use and press the <b>Save & Connect</b> button.");
    } else if (type==QLatin1String("SMB")) {
        text = i18n("Enter a name for this <i>Microsoft Windows network drive</i> as well as a server address and folder path to use and press the <b>Save & Connect</b> button.");
    }

    _informationText->setText(text);
}

void KNetAttach::updateParametersPageStatus()
{
    button(FinishButton)->setEnabled(
                !_host->text().trimmed().isEmpty() &&
                !_path->text().trimmed().isEmpty() &&
                !_connectionName->text().trimmed().isEmpty());
}

bool KNetAttach::validateCurrentPage()
{
    if (currentPage() == _folderType){
        _host->setFocus();
        _connectionName->setFocus();

        if (_webfolder->isChecked()) {
            setInformationText(QStringLiteral("WebFolder"));
            updateForProtocol(QStringLiteral("WebFolder"));
            _port->setValue(80);
        } else if (_fish->isChecked()) {
            setInformationText(QStringLiteral("Fish"));
            updateForProtocol(QStringLiteral("Fish"));
            _port->setValue(22);
        } else if (_ftp->isChecked()) {
            setInformationText(QStringLiteral("FTP"));
            updateForProtocol(QStringLiteral("FTP"));
            _port->setValue(21);
            if (_path->text().isEmpty()) {
                _path->setText(QStringLiteral("/"));
            }
        } else if (_smb->isChecked()) {
            setInformationText(QStringLiteral("SMB"));
            updateForProtocol(QStringLiteral("SMB"));
        } else { //if (_recent->isChecked()) {
            KConfig recent( QStringLiteral("krecentconnections"), KConfig::NoGlobals );
            if (!recent.hasGroup(_recentConnectionName->currentText())) {
                KConfigGroup group = recent.group("General");
                QStringList idx = group.readEntry("Index",QStringList());
                if (idx.isEmpty()) {
                    _recent->setEnabled(false);
                    if (_recent->isChecked()) {
                        _webfolder->setChecked(true);
                    }
                } else {
                    _recent->setEnabled(true);
                    _recentConnectionName->addItems(idx);
                }
                return false;
            }
            KConfigGroup group = recent.group(_recentConnectionName->currentText());
            _type = group.readEntry("Type");
            setInformationText(_type);
            if (!updateForProtocol(_type)) {
                // FIXME: handle error
            }
            QUrl u(group.readEntry("URL"));
            _host->setText(u.host());
            _user->setText(u.userName());
            _path->setText(u.path());
            if (group.hasKey("Port")) {
                _port->setValue(group.readEntry("Port",0));
            } else {
                _port->setValue(u.port());
            }
            _connectionName->setText(_recentConnectionName->currentText());
            _createIcon->setChecked(false);
        }
        updateParametersPageStatus();

    }else{
        button(BackButton)->setEnabled(false);
        button(FinishButton)->setEnabled(false);
        QUrl url;
        if (_type == QLatin1String("WebFolder")) {
            if (_useEncryption->isChecked()) {
                url.setScheme(QStringLiteral("webdavs"));
            } else {
                url.setScheme(QStringLiteral("webdav"));
            }
            url.setPort(_port->value());
        } else if (_type == QLatin1String("Fish")) {
            KConfig config(QStringLiteral("kio_fishrc"));
            KConfigGroup cg(&config, _host->text().trimmed());
            cg.writeEntry("Charset", KCharsets::charsets()->encodingForName(_encoding->currentText()));
            url.setScheme(_protocolText->currentText());
            url.setPort(_port->value());
        } else if (_type == QLatin1String("FTP")) {
            url.setScheme(QStringLiteral("ftp"));
            url.setPort(_port->value());
            KConfig config(QStringLiteral("kio_ftprc"));
            KConfigGroup cg(&config, _host->text().trimmed());
            cg.writeEntry("Charset", KCharsets::charsets()->encodingForName(_encoding->currentText()));
            config.sync();
        } else if (_type == QLatin1String("SMB")) {
            url.setScheme(QStringLiteral("smb"));
        } else { // recent
        }

        url.setHost(_host->text().trimmed());
        const QString trimmedUser = _user->text().trimmed();
        if (!trimmedUser.isEmpty()) {
            url.setUserName(trimmedUser);
        }
        QString path = _path->text().trimmed();
#ifndef Q_WS_WIN
        // could a relative path really be made absolute by simply prepending a '/' ?
        if (!path.startsWith(QLatin1Char('/'))) {
            path = QLatin1Char('/') + path;
        }
#endif
        url.setPath(path);
        _folderParameters->setEnabled(false);
        bool success = doConnectionTest(url);
        _folderParameters->setEnabled(true);
        if (!success) {
            KMessageBox::sorry(this, i18n("Unable to connect to server.  Please check your settings and try again."));
            button(BackButton)->setEnabled(true);
            return false;
        }

        KRun::RunFlags flags;
        flags |= KRun::RunExecutables;
        KRun::runUrl(url, QStringLiteral("inode/directory"), this, flags);

        QString name = _connectionName->text().trimmed();

        if (_createIcon->isChecked()) {
            KGlobal::dirs()->addResourceType("remote_entries", "data", "remoteview");

            QString path = KGlobal::dirs()->saveLocation("remote_entries");
            path += name + QStringLiteral(".desktop");
            KConfig _desktopFile( path, KConfig::SimpleConfig );
            KConfigGroup desktopFile(&_desktopFile, "Desktop Entry");
            desktopFile.writeEntry("Icon", "folder-remote");
            desktopFile.writeEntry("Name", name);
            desktopFile.writeEntry("Type", "Link");
            desktopFile.writeEntry("URL", url.toDisplayString());
            desktopFile.writeEntry("Charset", url.queryItemValue("charset"));
            desktopFile.sync();
            org::kde::KDirNotify::emitFilesAdded( QUrl(QStringLiteral("remote:/")) );
        }

        if (!name.isEmpty()) {
            KConfig _recent(QStringLiteral("krecentconnections"), KConfig::NoGlobals);
            KConfigGroup recent(&_recent, "General");
            QStringList idx = recent.readEntry("Index",QStringList());
            _recent.deleteGroup(name); // erase anything stale
            if (idx.contains(name)) {
                idx.removeAll(name);
                idx.prepend(name);
                recent.writeEntry("Index", idx);
            } else {
                QString last;
                if (!idx.isEmpty()) {
                    last = idx.last();
                    idx.pop_back();
                }
                idx.prepend(name);
                _recent.deleteGroup(last);
                recent.writeEntry("Index", idx);
            }
            recent = KConfigGroup(&_recent,name);
            recent.writeEntry("URL", url.toDisplayString());
            if (_type == QLatin1String("WebFolder") || _type == QLatin1String("Fish") || _type == QLatin1String("FTP")) {
                recent.writeEntry("Port", _port->value());
            }
            recent.writeEntry("Type", _type);
            recent.sync();
        }
    }
    return true;
}


void KNetAttach::updatePort(bool encryption)
{
    if (_webfolder->isChecked()) {
        if (encryption) {
            _port->setValue(443);
        } else {
            _port->setValue(80);
        }
    }
}


bool KNetAttach::doConnectionTest(const QUrl& url)
{
    KIO::UDSEntry entry;
    if (KIO::NetAccess::stat(url, entry, this)) {
        // Anything to test here?
        return true;
    }
    return false;
}


bool KNetAttach::updateForProtocol(const QString& protocol)
{
    _type = protocol;
    if (protocol == QLatin1String("WebFolder")) {
        _useEncryption->show();
        _portText->show();
        _port->show();
        _protocol->hide();
        _protocolText->hide();
        _userText->show();
        _user->show();
        _encodingText->hide();
        _encoding->hide();
    } else if (protocol == QLatin1String("Fish")) {
        _useEncryption->hide();
        _portText->show();
        _port->show();
        _protocol->show();
        _protocolText->show();
        _userText->show();
        _user->show();
        _encodingText->show();
        _encoding->show();
    } else if (protocol == QLatin1String("FTP")) {
        _useEncryption->hide();
        _portText->show();
        _port->show();
        _protocol->hide();
        _protocolText->hide();
        _userText->show();
        _user->show();
        _encodingText->show();
        _encoding->show();
    } else if (protocol == QLatin1String("SMB")) {
        _useEncryption->hide();
        _portText->hide();
        _port->hide();
        _protocol->hide();
        _protocolText->hide();
        _userText->hide();
        _user->hide();
        _encodingText->hide();
        _encoding->hide();
    } else {
        _type = QString();
        return false;
    }
    return true;
}


void KNetAttach::updateFinishButtonText(bool save)
{
    if (save) {
        button(FinishButton)->setText(i18n("Save && C&onnect"));
    } else {
        button(FinishButton)->setText(i18n("C&onnect"));
    }
}

// vim: ts=8 sw=4 noet