/*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2007 Igor Ulyanov <iulyanov@gmail.com>

 * Copyright (c) 2004-2014 Andrey Korotaev <unC0Rr@gmail.com>

 *

 * 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; version 2 of the License

 *

 * 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

 */

#ifndef _CHAT_WIDGET_INCLUDED

#define _CHAT_WIDGET_INCLUDED

#include <QWidget>

#include <QString>

#include <QGridLayout>

#include <QList>

#include <QPair>

#include <QRegExp>

#include <QHash>

#include <QListWidgetItem>

#include "SDLInteraction.h"

#include "SmartLineEdit.h"

class QTextBrowser;

class QLineEdit;

class QListView;

class QSettings;

class QAbstractItemModel;

class QMenu;

/**

 * @brief Chat widget.

 *

 * By default uses :res/css/chat.css as style sheet for chat.

 * See \repo{res/css/chat.css} for a more detailed description.

 *

 * @see http://doc.qt.nokia.com/4.5/richtext-html-subset.html#css-properties

 */

class HWChatWidget : public QWidget

{

        Q_OBJECT

    public:

        HWChatWidget(QWidget* parent, bool notify);

        void setIgnoreListKick(bool enabled); ///< automatically kick people on ignore list (if possible)

        void setShowFollow(bool enabled);

        static const QString & styleSheet();

        void displayError(const QString & message);

        void displayNotice(const QString & message);

        void displayWarning(const QString & message);

        void setUser(const QString & nickname);

        void setUsersModel(QAbstractItemModel * model);

        void setSettings(QSettings * settings);

    protected:

        virtual void dragEnterEvent(QDragEnterEvent * event);

        virtual void dropEvent(QDropEvent * event);

        virtual void resizeEvent(QResizeEvent * event);

        virtual void showEvent(QShowEvent * event);

    private:

        static QString * s_styleSheet;

        static QStringList * s_displayNone;

        static bool s_isTimeStamped;

        static QString s_tsFormat;

        static const QRegExp URLREGEXP;

        static void setStyleSheet(const QString & styleSheet = "");

        void addLine(const QString & cssClass, QString line, bool isHighlight = false);

        bool parseCommand(const QString & line);

        void discardStyleSheet();

        void saveStyleSheet();

        QString linkedNick(const QString & nickname);

        void beforeContentAdd();

        void afterContentAdd();

        /**

         * @brief Checks whether the message contains a highlight.

         * @param sender the sender of the message

         * @param message the message

         * @return true if the sender is somebody else and the message contains a highlight, otherwise false

         */

        bool containsHighlight(const QString & sender, const QString & message);

        /**

         * @brief Escapes HTML chars in the message and converts URls to HTML links.

         * @param message the message to be converted to HTML

         * @return the HTML message

         */

        QString messageToHTML(const QString & message);

        void printChatString(

            const QString & nick,

            const QString & str,

            const QString & cssClassPart,

            bool highlight);

    public slots:

        void onChatAction(const QString & nick, const QString & str);

        void onChatMessage(const QString & nick, const QString & str);

        void onServerMessage(const QString& str);

        void nickAdded(const QString& nick, bool notifyNick);

        void nickRemoved(const QString& nick);

        void nickRemoved(const QString& nick, const QString& message);

        void clear();

        void adminAccess(bool);

        void onPlayerInfo(

            const QString & nick,

            const QString & ip,

            const QString & version,

            const QString & roomInfo);

    signals:

        void chatLine(const QString& str);

        void kick(const QString & str);

        void ban(const QString & str);

        void info(const QString & str);

        void follow(const QString &);

        void nickCountUpdate(int cnt);

        void consoleCommand(const QString & command);

    private:

        bool m_isAdmin;

        QHBoxLayout mainLayout;

        QTextBrowser* chatText;

        QStringList chatStrings;

        QListView* chatNicks;

        SmartLineEdit* chatEditLine;

        QAction * acInfo;

        QAction * acKick;

        QAction * acBan;

        QAction * acFollow;

        QAction * acIgnore;

        QAction * acFriend;

        QSettings * gameSettings;

        QMenu * m_nicksMenu;

        QStringList m_helloSounds;

        QString m_hilightSound;

        QString m_userNick;

        QString m_clickedNick;

        QList<QRegExp> m_highlights; ///< regular expressions used for highlighting

        bool notify;

        bool m_autoKickEnabled;

        bool m_scrollToBottom;

        int m_scrollBarPos;

    private slots:

        void returnPressed();

        void onBan();

        void onKick();

        void onInfo();

        void onFollow();

        void onIgnore();

        void onFriend();

        void chatNickDoubleClicked(const QModelIndex & index);

        void linkClicked(const QUrl & link);

        void nicksContextMenuRequested(const QPoint & pos);

};

#endif // _CHAT_WIDGET_INCLUDED