/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the Qt Assistant of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

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**

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**

** $QT_END_LICENSE$

**

****************************************************************************/

#include "mainwindow.h"

#include "helpdialog.h"

#include "config.h"

#include <QTcpServer>

#include <QTcpSocket>

#include <QApplication>

#include <QPixmap>

#include <QStringList>

#include <QDir>

#include <QMessageBox>

#include <QPointer>

#include <QTranslator>

#include <QLibraryInfo>

#include <QLocale>

#include <stdlib.h>

#include <stdio.h>

#if defined(USE_STATIC_JPEG_PLUGIN)

  #include <QtPlugin>

  Q_IMPORT_PLUGIN(qjpeg)

#endif

#define INDEX_CHECK( text ) if( i+1 >= argc ) { fprintf(stderr, "%s\n", text); return 1; }

QT_BEGIN_NAMESPACE

#if !defined(QT_NO_DBUS) && defined(Q_OS_UNIX)

QT_BEGIN_INCLUDE_NAMESPACE

#include <QtDBus/QDBusConnection>

#include <QtDBus/QDBusAbstractAdaptor>

#include <QtDBus/QDBusObjectPath>

#include "tabbedbrowser.h"

QT_END_INCLUDE_NAMESPACE

class HelpWindowAdaptor : public QDBusAbstractAdaptor

{

    Q_OBJECT

    Q_CLASSINFO("D-Bus Interface", "com.trolltech.Assistant.HelpWindow")

    Q_PROPERTY(QString source READ source WRITE setSource)

public:

    HelpWindowAdaptor(HelpWindow *w) : QDBusAbstractAdaptor(w), helpWindow(w)

    {

        setAutoRelaySignals(true);

    }

public Q_SLOTS:

    inline QString source() const { return helpWindow->source().toString(); }

    inline void setSource(const QString &src) { helpWindow->setSource(src); }

    inline void clearHistory() { helpWindow->clearHistory(); }

    inline void backward() { helpWindow->backward(); }

    inline void forward() { helpWindow->forward(); }

    inline void reload() { helpWindow->reload(); }

    inline void home() { helpWindow->home(); }

private:

    HelpWindow *helpWindow;

};

class AssistantAdaptor : public QDBusAbstractAdaptor

{

    Q_OBJECT

    Q_CLASSINFO("D-Bus Interface", "com.trolltech.Assistant.HelpViewer")

public:

    AssistantAdaptor(MainWindow *mw) : QDBusAbstractAdaptor(mw), mw(mw)

    {

        QDBusConnection connection = QDBusConnection::sessionBus();

        connection.registerService(QLatin1String("com.trolltech.Assistant"));

        connection.registerObject(QLatin1String("/Assistant"), mw);

    }

public slots:

    void showLink(const QString &link) { mw->showLink(link); }

    QDBusObjectPath createNewTab();

    QDBusObjectPath currentTab();

private:

    QDBusObjectPath pathForBrowser(HelpWindow *window);

    MainWindow *mw;

};

QDBusObjectPath AssistantAdaptor::createNewTab()

{

    HelpWindow *window = mw->browsers()->newBackgroundTab();

    return pathForBrowser(window);

}

QDBusObjectPath AssistantAdaptor::currentTab()

{

    HelpWindow *window = mw->browsers()->currentBrowser();

    return pathForBrowser(window);

}

QDBusObjectPath AssistantAdaptor::pathForBrowser(HelpWindow *window)

{

    int index = mw->browsers()->browsers().indexOf(window);

    if (index == -1)

        return QDBusObjectPath();

    QString name(QLatin1String("/Assistant/Tabs/"));

    name += QString::number(index);

    QDBusObjectPath path(name);

    if (!window->findChild<HelpWindowAdaptor *>()) {

        (void)new HelpWindowAdaptor(window);

        QDBusConnection::sessionBus().registerObject(name, window);

    }

    return path;

}

#endif // QT_NO_DBUS

class AssistantSocket : public QTcpSocket

{

    Q_OBJECT

public:

    AssistantSocket( int sock, QObject *parent = 0 );

    ~AssistantSocket() {}

signals:

    void showLinkRequest( const QString& );

private slots:

    void readClient();

    void connectionClosed();

};

class AssistantServer : public QTcpServer

{

    Q_OBJECT

public:

    AssistantServer( QObject* parent = 0 );

    quint16 getPort() const;

signals:

    void showLinkRequest( const QString& );

    void newConnect();

public slots:

    virtual void incomingConnection( int socket );

private:

    quint16 p;

};

AssistantSocket::AssistantSocket( int sock, QObject *parent )

    : QTcpSocket( parent )

{

    connect( this, SIGNAL(readyRead()), SLOT(readClient()) );

    connect( this, SIGNAL(disconnected()), SLOT(connectionClosed()) );

    setSocketDescriptor( sock );

}

void AssistantSocket::readClient()

{

    QString link = QString();

    while ( canReadLine() )

        link = QLatin1String(readLine());

    if ( !link.isNull() ) {

        link = link.replace(QLatin1String("\n"), QLatin1String(""));

        link = link.replace(QLatin1String("\r"), QLatin1String(""));

        QFileInfo fi(link);

        link = fi.absoluteFilePath();

        emit showLinkRequest( link );

    }

}

void AssistantSocket::connectionClosed()

{

    deleteLater();

}

AssistantServer::AssistantServer( QObject *parent )

    : QTcpServer( parent )

{

    listen(QHostAddress::LocalHost, 0);

    if ( !isListening() ) {

        QMessageBox::critical( 0, tr( "Qt Assistant" ),

                tr( "Failed to bind to port %1" ).arg( serverPort() ) );

        exit( 1 );

    }

    p = serverPort();

}

quint16 AssistantServer::getPort() const

{

    return p;

}

void AssistantServer::incomingConnection( int socket )

{

    AssistantSocket *as = new AssistantSocket( socket, this );

    connect( as, SIGNAL(showLinkRequest(QString)),

             this, SIGNAL(showLinkRequest(QString)) );

    emit newConnect();

}

int runAssistant( int argc, char ** argv )

{

    bool withGUI = true;

#ifndef Q_WS_WIN

    if ( argc > 1 ) {

        QString arg = QString::fromLocal8Bit(argv[1]);

        arg = arg.toLower();

        if ( arg == QLatin1String("-addcontentfile")

            || arg == QLatin1String("-removecontentfile")

            || arg == QLatin1String("-help")

            || arg == QLatin1String("/?")

            )

            withGUI = false;

    }

#endif

    QApplication a(argc, argv, withGUI);

    a.setOrganizationName(QLatin1String("Trolltech"));

    a.setApplicationName(QLatin1String("Assistant"));

    QString resourceDir;

    AssistantServer *as = 0;

    QStringList catlist;

    QString file, profileName, aDocPath;

    bool server = false;

    bool hideSidebar = false;

    bool configLoaded = false;

    if ( argc == 2 ) {

        file = QString::fromLocal8Bit(argv[1]);

        if (file.startsWith(QLatin1String("-")) || file == QLatin1String("/?")) {

            file.clear();

        } else {

            QFileInfo fi(file);

            file = fi.absoluteFilePath();

            file = MainWindow::urlifyFileName(file);

        }

    }

    if ( file.isEmpty() ) {

        for ( int i = 1; i < argc; i++ ) {

            QString opt = QString::fromLocal8Bit(argv[i]).toLower();

            if ( opt == QLatin1String("-file") ) {

                INDEX_CHECK( "Missing file argument!" );

                i++;

                file = QFile::decodeName(argv[i]);

            } else if ( opt == QLatin1String("-server") ) {

                server = true;

            } else if ( opt == QLatin1String("-profile") ) {

                INDEX_CHECK( "Missing profile argument!" );

                profileName = QFile::decodeName(argv[++i]);

            } else if ( opt == QLatin1String("-addcontentfile") ) {

                INDEX_CHECK( "Missing content file!" );

                Config *c = Config::loadConfig(QString());

                QFileInfo file( QFile::decodeName(argv[i+1]) );

                if( !file.exists() ) {

                    fprintf(stderr, "Could not locate content file: %s\n", qPrintable(file.absoluteFilePath()));

                    return 1;

                }

                DocuParser *parser = DocuParser::createParser( file.absoluteFilePath() );

                if( parser ) {

                    QFile f( QFile::decodeName(argv[i+1]) );

                    if( !parser->parse( &f ) ) {

                        fprintf(stderr, "Failed to parse file: %s\n", qPrintable(file.absoluteFilePath()));

                        return 1;

                    }

                    parser->addTo( c->profile() );

                    c->setDocRebuild( true );

                    c->save();

                }

                return 0;

            } else if ( opt == QLatin1String("-removecontentfile") ) {

                INDEX_CHECK("Missing content file!");

                Config *c = Config::loadConfig(QString());

                Profile *profile = c->profile();

                QString contentFile = QString::fromLocal8Bit(argv[i+i]);

                QStringList entries;

#ifdef Q_WS_WIN

                contentFile.replace(QLatin1Char('\\'), QLatin1Char('/'));

                entries = profile->docs.filter(contentFile, Qt::CaseInsensitive);

#else

                entries = profile->docs.filter(contentFile);

#endif

                if (entries.count() == 0) {

                    fprintf(stderr, "Could not locate content file: %s\n", qPrintable(contentFile));

                    return 1;

                } else if (entries.count() > 1) {

                    fprintf(stderr, "More than one entry matching file name found, "

                        "please specify full path to file");

                    return 1;

                } else {

                    QFileInfo file(entries[0]);

                    if( !file.exists() ) {

                        fprintf(stderr, "Could not locate content file: %s\n", qPrintable(file.absoluteFilePath()));

                        return 1;

                    }

                    profile->removeDocFileEntry( file.absoluteFilePath() );

                    c->setDocRebuild( true );

                    c->save();

                }

                return 0;

            } else if ( QString( QLatin1String(argv[i]) ).toLower() == QLatin1String("-docpath") ) {

                INDEX_CHECK( "Missing path!" );

                QDir dir(QString::fromLocal8Bit(argv[i+1]));

                if ( dir.exists() ) {

                    Config *c = Config::loadConfig(QString());

                    c->saveProfile(Profile::createDefaultProfile(dir.absolutePath()));

                    c->loadDefaultProfile();

                    c->setDocRebuild(true);

                    c->save();

                    configLoaded = true;

                    ++i;

                } else {

                    fprintf(stderr, "The specified path does not exist!\n");

                    return 1;

                }

            } else if ( opt == QLatin1String("-hidesidebar") ) {

                hideSidebar = true;

            } else if ( opt == QLatin1String("-help") || opt == QLatin1String("/?") ) {

                QString helpText = QLatin1String( "Usage: assistant [option]\n"

                                  "Options:\n"

                                  " -file Filename             assistant opens the specified file\n"

                                  " -server                    reads commands from a socket after\n"

                                  "                            assistant has started\n"

                                  " -profile fileName          starts assistant and displays the\n"

                                  "                            profile specified in the file fileName.\n"

                                  " -addContentFile file       adds the content file 'file' to the set of\n"

                                  "                            documentation available by default\n"

                                  " -removeContentFile file    removes the content file 'file' from the\n"

                                  "                            documentation available by default\n"

                                  " -docPath path              sets the Qt documentation root path to\n"

                                  "                            'path' and starts assistant\n"

                                  " -hideSidebar               assistant will hide the sidebar.\n"

                                  " -resourceDir               assistant will load translations from\n"

                                  "                            this directory.\n"

                                  " -help                      shows this help.");

#ifdef Q_WS_WIN

                QMessageBox::information( 0, QLatin1String("Qt Assistant"),

                    QLatin1String("<pre>") + helpText + QLatin1String("</pre>") );

#else

                fprintf(stdout, "%s\n", qPrintable(helpText));

#endif

                exit( 0 );

            } else if ( opt == QLatin1String("-resourcedir") ) {

                INDEX_CHECK( "Missing resource directory argument!" );

                resourceDir = QFile::decodeName( argv[++i] );

            } else {

                fprintf(stderr, "Unrecognized option %s. Try -help to get help.\n", qPrintable(opt));

                return 1;

            }

        }

    }

    if( resourceDir.isNull() )

        resourceDir = QLibraryInfo::location(QLibraryInfo::TranslationsPath);

    QTranslator translator( 0 );

    translator.load( QLatin1String("assistant_adp_") + QLocale::system().name(), resourceDir );

    a.installTranslator( &translator );

    QTranslator qtTranslator( 0 );

    qtTranslator.load( QLatin1String("qt_") + QLocale::system().name(), resourceDir );

    a.installTranslator( &qtTranslator );

    Config *conf = 0;

    if (configLoaded)

        conf = Config::configuration();

    else

        conf = Config::loadConfig( profileName );

    if (!conf) {

        fprintf( stderr, "Profile '%s' does not exist!\n", profileName.toLatin1().constData() );

        fflush( stderr );

        return -1;

    }

    QStringList links = conf->source();

    conf->hideSideBar( hideSidebar );

    QPointer<MainWindow> mw = new MainWindow();

    mw->setObjectName(QLatin1String("Assistant"));

    if ( server ) {

        as = new AssistantServer();

        printf("%d\n", as->serverPort() );

        fflush( stdout );

        as->connect( as, SIGNAL(showLinkRequest(QString)),

                     mw, SLOT(showLinkFromClient(QString)) );

    }

#if !defined(QT_NO_DBUS) && defined(Q_OS_UNIX)

    new AssistantAdaptor(mw);

#endif // QT_NO_DBUS

    FontSettings settings = conf->fontSettings();

    if (mw->font() != settings.windowFont)

        a.setFont(settings.windowFont, "QWidget");

#ifdef Q_WS_MAC

    // Make sure AssitantClient shows the window in front.

    mw->raise();

#endif

    mw->show();

    if (!file.isEmpty())

        mw->showLink( MainWindow::urlifyFileName(file) );

    else if (file.isEmpty())

        mw->showLinks( links );

    a.connect( &a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()) );

    int appExec = a.exec();

    delete (MainWindow*)mw;

    return appExec;

}

QT_END_NAMESPACE

int main( int argc, char ** argv )

{

    Q_INIT_RESOURCE(assistant);

    return QT_PREPEND_NAMESPACE(runAssistant)(argc, argv);

}

#include "main.moc"