/*
 * ahcommand.h - Ad-Hoc Command
 * Copyright (C) 2005  Remko Troncon
 *
 * 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 */

#ifndef AHCOMMAND_H
#define AHCOMMAND_H

#include <QString>
#include <QSharedDataPointer>

#include "xmpp_xdata.h"

class QDomElement;
class QDomDocument;

class AHCError
{
public:
    enum ErrorType {
        None, MalformedAction, BadAction, BadLocale,
        BadPayload, BadSessionID, SessionExpired, Forbidden, ItemNotFound,
        FeatureNotImplemented
    };

    AHCError(ErrorType = None);
    AHCError(const QDomElement& e);

    ErrorType type() const { return type_; }
    static QString error2description(const AHCError&);
    QDomElement toXml(QDomDocument* doc) const;

protected:
    static ErrorType strings2error(const QString&, const QString&);

private:
    ErrorType type_;
};

class AHCommandPrivate;
class AHCommand
{
public:
    // Types
    enum Action { NoAction, Execute, Prev, Next, Complete, Cancel };
    enum Status { NoStatus, Completed, Executing, Canceled };
    typedef QList<Action> ActionList;
    enum NoteType { Info, Warn, Error };
    struct Note {
        QString  text;
        NoteType type;
        Note() : type(Info) {}
    };

    // Constructors
    AHCommand();
    AHCommand(const QString& node, const QString& sessionId = "", Action action = Execute);
    AHCommand(const QString& node, XMPP::XData data, const QString& sessionId = "", Action action = Execute);
    AHCommand(const QDomElement &e);
    AHCommand(const AHCommand &other);
    ~AHCommand();

    AHCommand& operator=(const AHCommand &other);

    // Inspectors
    const QString& node() const;
    bool hasData() const;
    const XMPP::XData& data() const;
    const ActionList& actions() const;
    Action defaultAction() const;
    Status status() const;
    Action action() const;
    const QString& sessionId() const;
    const AHCError& error() const;
    bool hasNote() const;
    const Note& note() const;

    // XML conversion
    QDomElement toXml(QDomDocument* doc, bool submit) const;

    // Helper constructors
    static AHCommand formReply(const AHCommand&, const XMPP::XData&);
    static AHCommand formReply(const AHCommand&, const XMPP::XData&, const QString& sessionId);
    static AHCommand canceledReply(const AHCommand&);
    static AHCommand completedReply(const AHCommand&);
    static AHCommand completedReply(const AHCommand&, const XMPP::XData&);
    //static AHCommand errorReply(const AHCommand&, const AHCError&);

protected:
    void setStatus(Status s);
    void setError(const AHCError& e);
    void setDefaultAction(Action a);

    static QString action2string(Action);
    static QString status2string(Status);
    static Action string2action(const QString&);
    static Status string2status(const QString&);

private:
    QSharedDataPointer<AHCommandPrivate> d;
};

#endif
