squawk/core/urlstorage.h
2021-04-13 16:27:31 +03:00

103 lines
3.1 KiB
C++

/*
* Squawk messenger.
* Copyright (C) 2019 Yury Gubich <blue@macaw.me>
*
* 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 3 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. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef CORE_URLSTORAGE_H
#define CORE_URLSTORAGE_H
#include <QString>
#include <QDataStream>
#include <lmdb.h>
#include <list>
#include "archive.h"
namespace Core {
/**
* @todo write docs
*/
class UrlStorage
{
class UrlInfo;
public:
struct MessageInfo {
MessageInfo();
MessageInfo(const QString& acc, const QString& j, const QString& id);
QString account;
QString jid;
QString messageId;
};
UrlStorage(const QString& name);
~UrlStorage();
void open();
void close();
void addFile(const QString& url);
void addFile(const QString& url, const QString& path);
void addFile(const QString& url, const QString& account, const QString& jid, const QString& id);
void addFile(const QString& url, const QString& path, const QString& account, const QString& jid, const QString& id);
std::list<MessageInfo> removeFile(const QString& url); //removes entry like it never was in the database, returns affected message infos
std::list<MessageInfo> deletedFile(const QString& path); //empties the localPath of the entry, returns affected message infos
std::list<MessageInfo> setPath(const QString& url, const QString& path);
QString addMessageAndCheckForPath(const QString& url, const QString& account, const QString& jid, const QString& id);
private:
QString name;
bool opened;
MDB_env* environment;
MDB_dbi base;
MDB_dbi map;
private:
void writeInfo(const QString& key, const UrlInfo& info, bool overwrite = false);
void writeInfo(const QString& key, const UrlInfo& info, MDB_txn* txn, bool overwrite = false);
void readInfo(const QString& key, UrlInfo& info);
void readInfo(const QString& key, UrlInfo& info, MDB_txn* txn);
private:
class UrlInfo {
public:
UrlInfo(const QString& path);
UrlInfo();
~UrlInfo();
void serialize(QDataStream& data) const;
void deserialize(QDataStream& data);
QString getPath() const;
bool hasPath() const;
void setPath(const QString& path);
void addMessage(const QString& acc, const QString& jid, const QString& id);
void getMessages(std::list<MessageInfo>& container) const;
private:
QString localPath;
std::list<MessageInfo> messages;
};
};
}
#endif // CORE_URLSTORAGE_H