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// Copyright (C) 2016 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef CHATSERVER_H
#define CHATSERVER_H
#include <QObject>
#include <QStringList>
QT_BEGIN_NAMESPACE
class QTimer;
QT_END_NAMESPACE
class ChatServer : public QObject
{
Q_OBJECT
Q_PROPERTY(QStringList userList READ userList NOTIFY userListChanged)
public:
explicit ChatServer(QObject *parent = nullptr);
virtual ~ChatServer();
public:
//a user logs in with the given username
Q_INVOKABLE bool login(const QString &userName);
//the user logs out, will be removed from userlist immediately
Q_INVOKABLE bool logout(const QString &userName);
//a user sends a message to all other users
Q_INVOKABLE bool sendMessage(const QString &user, const QString &msg);
//response of the keep alive signal from a client.
// This is used to detect disconnects.
Q_INVOKABLE void keepAliveResponse(const QString &user);
QStringList userList() const;
protected slots:
void sendKeepAlive();
void checkKeepAliveResponses();
signals:
void newMessage(QString time, QString user, QString msg);
void keepAlive();
void userListChanged();
void userCountChanged();
private:
QStringList m_userList;
QStringList m_stillAliveUsers;
QTimer *m_keepAliveCheckTimer;
};
#endif // CHATSERVER_H
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