/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2018-     Equinor ASA
//
//  ResInsight 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.
//
//  ResInsight 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 at <http://www.gnu.org/licenses/gpl.html>
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#include "RicHoloLensSessionManager.h"
#include "RicHoloLensSession.h"

#include "RiaLogging.h"

#include "cafCmdFeatureManager.h"

//==================================================================================================
//
//
//
//==================================================================================================

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RicHoloLensSessionManager::RicHoloLensSessionManager()
{
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RicHoloLensSessionManager* RicHoloLensSessionManager::instance()
{
    static RicHoloLensSessionManager theInstance;
    return &theInstance;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
bool RicHoloLensSessionManager::createSession( const QString& serverUrl,
                                               const QString& sessionName,
                                               const QString& sessionPinCode )
{
    if ( m_session )
    {
        RiaLogging::error( "Terminate existing session before creating a new session" );
        return false;
    }

    RiaLogging::info( QString( "Creating HoloLens session: '%1' with pin code: %2, server url: %3" )
                          .arg( sessionName )
                          .arg( sessionPinCode )
                          .arg( serverUrl ) );
    m_session = RicHoloLensSession::createSession( serverUrl, sessionName, sessionPinCode.toLatin1(), this );

    refreshToolbarState();

    return true;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
bool RicHoloLensSessionManager::createDummyFileBackedSession()
{
    if ( m_session )
    {
        RiaLogging::error( "Terminate existing session before creating a new session" );
        return false;
    }

    m_session = RicHoloLensSession::createDummyFileBackedSession();
    RiaLogging::info( "Created dummy file-backed HoloLens session" );

    refreshToolbarState();

    return true;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RicHoloLensSessionManager::terminateSession()
{
    if ( !m_session )
    {
        return;
    }

    RiaLogging::info( "Terminating HoloLens session" );

    RicHoloLensSession* sessionToDelete = m_session;
    m_session->destroySession();
    m_session = nullptr;

    refreshToolbarState();

    sessionToDelete->deleteLater();
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RicHoloLensSession* RicHoloLensSessionManager::session()
{
    return m_session;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RicHoloLensSessionManager::refreshToolbarState()
{
    QStringList commandIds;

    commandIds << "RicHoloLensCreateSessionFeature";
    commandIds << "RicHoloLensExportToSharingServerFeature";
    commandIds << "RicHoloLensAutoExportToSharingServerFeature";
    commandIds << "RicHoloLensTerminateSessionFeature";

    caf::CmdFeatureManager::instance()->refreshStates( commandIds );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RicHoloLensSessionManager::handleSessionNotification( const RicHoloLensSession* session, Notification notification )
{
    if ( notification == RicHoloLensSessionObserver::CreateSessionFailed )
    {
        if ( m_session && m_session == session ) terminateSession();
    }
    else
    {
        refreshToolbarState();
    }
}