/*
 * Copyright (C) 2015 Jolla Ltd.
 * Contact: Slava Monich <slava.monich@jolla.com>
 *
 * You may use this file under the terms of the BSD license as follows:
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *   * Neither the name of Nemo Mobile nor the names of its contributors
 *     may be used to endorse or promote products derived from this
 *     software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef QUSBMODED_H
#define QUSBMODED_H

#include "qusbmoded_types.h"

#include <QObject>
#include <QStringList>

class QDBusPendingCallWatcher;

class QUSBMODED_EXPORT QUsbModed : public QObject
{
    Q_OBJECT
    Q_PROPERTY(bool available READ available NOTIFY availableChanged)
    Q_PROPERTY(QStringList supportedModes READ supportedModes NOTIFY supportedModesChanged)
    Q_PROPERTY(QString currentMode READ currentMode WRITE setCurrentMode NOTIFY currentModeChanged)
    Q_PROPERTY(QString configMode READ configMode WRITE setConfigMode NOTIFY configModeChanged)

    // States (from usb_moded-dbus.h)
    Q_PROPERTY(QString USB_CONNECTED READ USB_CONNECTED CONSTANT)
    Q_PROPERTY(QString DATA_IN_USE READ DATA_IN_USE CONSTANT)
    Q_PROPERTY(QString USB_DISCONNECTED READ USB_DISCONNECTED CONSTANT)
    Q_PROPERTY(QString USB_CONNECTED_DIALOG_SHOW READ USB_CONNECTED_DIALOG_SHOW CONSTANT)

    // Modes (from usb_moded-modes.h)
    Q_PROPERTY(QString MODE_UNDEFINED READ MODE_UNDEFINED CONSTANT)
    Q_PROPERTY(QString MODE_ASK READ MODE_ASK CONSTANT)
    Q_PROPERTY(QString MODE_MASS_STORAGE READ MODE_MASS_STORAGE CONSTANT)
    Q_PROPERTY(QString MODE_DEVELOPER READ MODE_DEVELOPER CONSTANT)
    Q_PROPERTY(QString MODE_MTP READ MODE_MTP CONSTANT)
    Q_PROPERTY(QString MODE_HOST READ MODE_HOST CONSTANT)
    Q_PROPERTY(QString MODE_CONNECTION_SHARING READ MODE_CONNECTION_SHARING CONSTANT)
    Q_PROPERTY(QString MODE_DIAG READ MODE_DIAG CONSTANT)
    Q_PROPERTY(QString MODE_ADB READ MODE_ADB CONSTANT)
    Q_PROPERTY(QString MODE_PC_SUITE READ MODE_PC_SUITE CONSTANT)
    Q_PROPERTY(QString MODE_CHARGING READ MODE_CHARGING CONSTANT)
    Q_PROPERTY(QString MODE_CHARGER READ MODE_CHARGER CONSTANT)

public:
    class Mode {
    public:
        // States (from usb_moded-dbus.h)
        static const QString Connected;
        static const QString DataInUse;
        static const QString Disconnected;
        static const QString ModeRequest;

        // Modes (from usb_moded-modes.h)
        static const QString Undefined;
        static const QString Ask;
        static const QString MassStorage;
        static const QString Developer;
        static const QString MTP;
        static const QString Host;
        static const QString ConnectionSharing;
        static const QString Diag;
        static const QString Adb;
        static const QString PCSuite;
        static const QString Charging;
        static const QString Charger;

    private:
        Mode(); // Disallow instantiation
    };

    explicit QUsbModed(QObject* parent = NULL);
    ~QUsbModed();

    bool available() const;
    QStringList supportedModes() const;
    QString currentMode() const;
    QString configMode() const;

    bool setCurrentMode(QString mode);
    bool setConfigMode(QString mode);

private:
    // Getters for QML constants
    QString USB_CONNECTED() const { return Mode::Connected; }
    QString DATA_IN_USE() const { return Mode::DataInUse; }
    QString USB_DISCONNECTED() const { return Mode::Disconnected; }
    QString USB_CONNECTED_DIALOG_SHOW() const { return Mode::ModeRequest; }
    QString MODE_UNDEFINED() const { return Mode::Undefined; }
    QString MODE_ASK() const { return Mode::Ask; }
    QString MODE_MASS_STORAGE() const { return Mode::MassStorage; }
    QString MODE_DEVELOPER() const { return Mode::Developer; }
    QString MODE_MTP() const { return Mode::MTP; }
    QString MODE_HOST() const { return Mode::Host; }
    QString MODE_CONNECTION_SHARING() const { return Mode::ConnectionSharing; }
    QString MODE_DIAG() const { return Mode::Diag; }
    QString MODE_ADB() const { return Mode::Adb; }
    QString MODE_PC_SUITE() const { return Mode::PCSuite; }
    QString MODE_CHARGING() const { return Mode::Charging; }
    QString MODE_CHARGER() const { return Mode::Charger; }

Q_SIGNALS:
    void availableChanged();
    void supportedModesChanged();
    void currentModeChanged();
    void configModeChanged();
    void usbStateError(QString error);

private Q_SLOTS:
    void onServiceRegistered(QString service);
    void onServiceUnregistered(QString service);
    void onGetModesFinished(QDBusPendingCallWatcher* call);
    void onGetConfigFinished(QDBusPendingCallWatcher* call);
    void onGetModeRequestFinished(QDBusPendingCallWatcher* call);
    void onSetModeFinished(QDBusPendingCallWatcher* call);
    void onSetConfigFinished(QDBusPendingCallWatcher* call);
    void onUsbConfigChanged(QString section, QString key, QString value);
    void onUsbStateChanged(QString mode);
    void onUsbSupportedModesChanged(QString modes);

private:
    void setup();
    void setupCallFinished(int callId);
    void updateSupportedModes(QString modes);

private:
    class Private;
    Private* iPrivate;
};

#endif // QUSBMODED_H