/*
 * Copyright (C) 2010  Sergey Ilinykh
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see <https://www.gnu.org/licenses/>.
 *
 */

#ifndef XMPP_BITSOFBINARY_H
#define XMPP_BITSOFBINARY_H

#include "xmpp/jid/jid.h"
#include "xmpp_hash.h"

#include <QDomElement>
#include <QFile>
#include <QHash>
#include <QObject>
#include <QSharedDataPointer>

namespace XMPP {
class Client;
class JT_BitsOfBinary;

class BoBData {
    class Private;

public:
    BoBData();
    BoBData(const BoBData &other);
    BoBData(const QDomElement &);
    ~BoBData();
    BoBData &operator=(const BoBData &other);

    bool isNull() const;

    static Hash cidToHash(const QString &cid);

    QString cid() const;
    void    setCid(const QString &);

    const Hash &hash() const;
    void        setHash(const Hash &hash);

    QByteArray data() const;
    void       setData(const QByteArray &);

    QString type() const;
    void    setType(const QString &);

    unsigned int maxAge() const;
    void         setMaxAge(unsigned int);

    void        fromXml(const QDomElement &);
    QDomElement toXml(QDomDocument *doc) const;

private:
    QSharedDataPointer<Private> d;
};

class BoBCache : public QObject {
    Q_OBJECT

public:
    BoBCache(QObject *parent);
    virtual void    put(const BoBData &) = 0;
    virtual BoBData get(const Hash &)    = 0;
};

class BoBManager : public QObject {
    Q_OBJECT

public:
    BoBManager(Client *);
    void setCache(BoBCache *);

    BoBData bobData(const QString &);
    // file data, mime type, max age in seconds
    BoBData append(const QByteArray &data, const QString &type, unsigned int maxAge = 0);
    Hash    append(QFile         &file,
                   const QString &type = "application/octet-stream"); // this method adds just to runtime cache
    void    append(const BoBData &);

private:
    BoBCache                                  *_cache;
    QHash<XMPP::Hash, QPair<QString, QString>> _localFiles; // cid => (filename, mime)
};
} // namespace XMPP

#endif // XMPP_BITSOFBINARY_H
