// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0

#pragma once

#include <QApplication>

QT_FORWARD_DECLARE_CLASS(QSharedMemory)

namespace SharedTools {

class QtLocalPeer;

class QtSingleApplication : public QApplication
{
    Q_OBJECT

public:
    QtSingleApplication(const QString &id, int &argc, char **argv);
    ~QtSingleApplication();

    bool isRunning(qint64 pid = -1);

    void setActivationWindow(QWidget* aw, bool activateOnMessage = true);
    QWidget* activationWindow() const;
    bool event(QEvent *event) override;

    QString applicationId() const;
    void setBlock(bool value);

    bool sendMessage(const QString &message, int timeout = 5000, qint64 pid = -1);
    void activateWindow();

Q_SIGNALS:
    void messageReceived(const QString &message, QObject *socket);
    void fileOpenRequest(const QString &file);

private:
    QString instancesFileName(const QString &appId);

    qint64 firstPeer;
    QSharedMemory *instances;
    QtLocalPeer *pidPeer;
    QWidget *actWin;
    QString appId;
    bool block;
};

// Instantiates Freeze Detector when QTC_FREEZE_DETECTOR env var is set.
QtSingleApplication *createApplication(const QString &id, int &argc, char **argv);

} // namespace SharedTools