/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <ContainerMediator.hxx>
#include <stringconstants.hxx>
#include <PropertyForward.hxx>

#include <com/sun/star/beans/PropertyAttribute.hpp>
#include <com/sun/star/sdbcx/XColumnsSupplier.hpp>
#include <com/sun/star/sdbcx/XTablesSupplier.hpp>
#include <com/sun/star/sdbcx/XRename.hpp>
#include <connectivity/dbtools.hxx>
#include <comphelper/property.hxx>
#include <tools/debug.hxx>
#include <tools/diagnose_ex.h>

namespace dbaccess
{
    using namespace ::com::sun::star::uno;
    using namespace ::com::sun::star::lang;
    using namespace ::com::sun::star::sdbc;
    using namespace ::com::sun::star::sdbcx;
    using namespace ::com::sun::star::beans;
    using namespace ::com::sun::star::container;

OContainerMediator::OContainerMediator( const Reference< XContainer >& _xContainer, const Reference< XNameAccess >& _xSettings )
    : m_xSettings( _xSettings )
    , m_xContainer( _xContainer )
{

    if ( _xSettings.is() && _xContainer.is() )
    {
        osl_atomic_increment(&m_refCount);
        try
        {
            m_xContainer->addContainerListener(this);
            Reference< XContainer > xContainer(_xSettings, UNO_QUERY);
            if ( xContainer.is() )
                xContainer->addContainerListener(this);
        }
        catch(Exception&)
        {
            OSL_FAIL("OContainerMediator::OContainerMediator: caught an exception!");
        }
        osl_atomic_decrement( &m_refCount );
    }
    else
    {
        m_xSettings.clear();
        m_xContainer.clear();
    }
}

OContainerMediator::~OContainerMediator()
{
    acquire();
    impl_cleanup_nothrow();
}

void OContainerMediator::impl_cleanup_nothrow()
{
    try
    {
        Reference< XContainer > xContainer( m_xSettings, UNO_QUERY );
        if ( xContainer.is() )
            xContainer->removeContainerListener( this );
        m_xSettings.clear();

        xContainer = m_xContainer;
        if ( xContainer.is() )
            xContainer->removeContainerListener( this );
        m_xContainer.clear();

        m_aForwardList.clear();
    }
    catch( const Exception& )
    {
        DBG_UNHANDLED_EXCEPTION("dbaccess");
    }
}

void SAL_CALL OContainerMediator::elementInserted( const ContainerEvent& _rEvent )
{
    ::osl::MutexGuard aGuard(m_aMutex);
    if ( _rEvent.Source == m_xSettings && m_xSettings.is() )
    {
        OUString sElementName;
        _rEvent.Accessor >>= sElementName;
        PropertyForwardList::const_iterator aFind = m_aForwardList.find(sElementName);
        if ( aFind != m_aForwardList.end() )
        {
            Reference< XPropertySet> xDest(_rEvent.Element,UNO_QUERY);
            aFind->second->setDefinition( xDest );
        }
    }
}

void SAL_CALL OContainerMediator::elementRemoved( const ContainerEvent& _rEvent )
{
    ::osl::MutexGuard aGuard(m_aMutex);
    Reference< XContainer > xContainer = m_xContainer;
    if ( _rEvent.Source == xContainer && xContainer.is() )
    {
        OUString sElementName;
        _rEvent.Accessor >>= sElementName;
        m_aForwardList.erase(sElementName);
        try
        {
            Reference<XNameContainer> xNameContainer( m_xSettings, UNO_QUERY );
            if ( xNameContainer.is() && m_xSettings->hasByName( sElementName ) )
                xNameContainer->removeByName( sElementName );
        }
        catch( const Exception& )
        {
            DBG_UNHANDLED_EXCEPTION("dbaccess");
        }
    }
}

void SAL_CALL OContainerMediator::elementReplaced( const ContainerEvent& _rEvent )
{
    Reference< XContainer > xContainer = m_xContainer;
    if ( _rEvent.Source == xContainer && xContainer.is() )
    {
        OUString sElementName;
        _rEvent.ReplacedElement >>= sElementName;

        PropertyForwardList::const_iterator aFind = m_aForwardList.find(sElementName);
        if ( aFind != m_aForwardList.end() )
        {
            OUString sNewName;
            _rEvent.Accessor >>= sNewName;
            try
            {
                Reference<XNameContainer> xNameContainer( m_xSettings, UNO_QUERY_THROW );
                if ( xNameContainer.is() && m_xSettings->hasByName( sElementName ) )
                {
                    Reference<XRename> xSource(m_xSettings->getByName(sElementName),UNO_QUERY_THROW);
                    xSource->rename(sNewName);
                }
            }
            catch( const Exception& )
            {
                DBG_UNHANDLED_EXCEPTION("dbaccess");
            }

            aFind->second->setName(sNewName);
        }
    }
}

void SAL_CALL OContainerMediator::disposing( const EventObject& /*Source*/ )
{
    ::osl::MutexGuard aGuard(m_aMutex);

    impl_cleanup_nothrow();
}

void OContainerMediator::impl_initSettings_nothrow( const OUString& _rName, const Reference< XPropertySet >& _rxDestination )
{
    try
    {
        if ( m_xSettings.is() && m_xSettings->hasByName( _rName ) )
        {
            Reference< XPropertySet > xSettings( m_xSettings->getByName( _rName ), UNO_QUERY_THROW );
            ::comphelper::copyProperties( xSettings, _rxDestination );
        }
    }
    catch( const Exception& )
    {
        DBG_UNHANDLED_EXCEPTION("dbaccess");
    }
}

void OContainerMediator::notifyElementCreated( const OUString& _sName, const Reference< XPropertySet >& _xDest )
{
    if ( !m_xSettings.is() )
        return;

    PropertyForwardList::const_iterator aFind = m_aForwardList.find( _sName );
    if  (   aFind != m_aForwardList.end()
        &&  aFind->second->getDefinition().is()
        )
    {
        OSL_FAIL( "OContainerMediator::notifyElementCreated: is this really a valid case?" );
        return;
    }

    std::vector< OUString > aPropertyList;
    try
    {
        // initially copy from the settings object (if existent) to the newly created object
        impl_initSettings_nothrow( _sName, _xDest );

        // collect the to-be-monitored properties
        Reference< XPropertySetInfo > xPSI( _xDest->getPropertySetInfo(), UNO_QUERY_THROW );
        Sequence< Property > aProperties( xPSI->getProperties() );
        for ( auto const & property : aProperties )
        {
            if ( ( property.Attributes & PropertyAttribute::READONLY ) != 0 )
                continue;
            if ( ( property.Attributes & PropertyAttribute::BOUND ) == 0 )
                continue;

            aPropertyList.push_back( property.Name );
        }
    }
    catch( const Exception& )
    {
        DBG_UNHANDLED_EXCEPTION("dbaccess");
    }

    ::rtl::Reference pForward( new OPropertyForward( _xDest, m_xSettings, _sName, aPropertyList ) );
    m_aForwardList[ _sName ] = pForward;
}

}   // namespace dbaccess

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