chatserver.h - mozsearch

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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