/* -*- 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 "dp_manager.h"

#include <dp_misc.h>

#include <cppuhelper/compbase.hxx>

#include <cppuhelper/supportsservice.hxx>

#include <com/sun/star/deployment/XPackageManagerFactory.hpp>

#include <com/sun/star/lang/XServiceInfo.hpp>

#include <unordered_map>

using namespace ::dp_misc;

using namespace ::com::sun::star;

using namespace ::com::sun::star::uno;

namespace dp_manager::factory {

typedef ::cppu::WeakComponentImplHelper<

    deployment::XPackageManagerFactory, lang::XServiceInfo > t_pmfac_helper;

namespace {

class PackageManagerFactoryImpl : private cppu::BaseMutex, public t_pmfac_helper

{

    Reference<XComponentContext> m_xComponentContext;

    Reference<deployment::XPackageManager> m_xUserMgr;

    Reference<deployment::XPackageManager> m_xSharedMgr;

    Reference<deployment::XPackageManager> m_xBundledMgr;

    Reference<deployment::XPackageManager> m_xTmpMgr;

    Reference<deployment::XPackageManager> m_xBakMgr;

    typedef std::unordered_map<

        OUString, WeakReference<deployment::XPackageManager> > t_string2weakref;

    t_string2weakref m_managers;

protected:

    inline void check();

    virtual void SAL_CALL disposing() override;

public:

    explicit PackageManagerFactoryImpl(

        Reference<XComponentContext> const & xComponentContext );

    // XServiceInfo

    virtual OUString SAL_CALL getImplementationName() override;

    virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;

    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;

    // XPackageManagerFactory

    virtual Reference<deployment::XPackageManager> SAL_CALL getPackageManager(

        OUString const & context ) override;

};

}

PackageManagerFactoryImpl::PackageManagerFactoryImpl(

    Reference<XComponentContext> const & xComponentContext )

    : t_pmfac_helper( m_aMutex ),

      m_xComponentContext( xComponentContext )

{

}

// XServiceInfo

OUString PackageManagerFactoryImpl::getImplementationName()

{

    return u"com.sun.star.comp.deployment.PackageManagerFactory"_ustr;

}

sal_Bool PackageManagerFactoryImpl::supportsService( const OUString& ServiceName )

{

    return cppu::supportsService(this, ServiceName);

}

css::uno::Sequence< OUString > PackageManagerFactoryImpl::getSupportedServiceNames()

{

    // a private one:

    return { u"com.sun.star.comp.deployment.PackageManagerFactory"_ustr };

}

inline void PackageManagerFactoryImpl::check()

{

    ::osl::MutexGuard guard( m_aMutex );

    if (rBHelper.bInDispose || rBHelper.bDisposed)

    {

        throw lang::DisposedException(

            u"PackageManagerFactory instance has already been disposed!"_ustr,

            static_cast<OWeakObject *>(this) );

    }

}

void PackageManagerFactoryImpl::disposing()

{

    // dispose all managers:

    ::osl::MutexGuard guard( m_aMutex );

    for (auto const& elem : m_managers)

        try_dispose( elem.second );

    m_managers = t_string2weakref();

    // the below are already disposed:

    m_xUserMgr.clear();

    m_xSharedMgr.clear();

    m_xBundledMgr.clear();

    m_xTmpMgr.clear();

    m_xBakMgr.clear();

}

// XPackageManagerFactory

Reference<deployment::XPackageManager>

PackageManagerFactoryImpl::getPackageManager( OUString const & context )

{

    Reference< deployment::XPackageManager > xRet;

    ::osl::ResettableMutexGuard guard( m_aMutex );

    check();

    t_string2weakref::const_iterator const iFind( m_managers.find( context ) );

    if (iFind != m_managers.end()) {

        xRet = iFind->second;

        if (xRet.is())

            return xRet;

    }

    guard.clear();

    xRet.set( PackageManagerImpl::create( m_xComponentContext, context ) );

    guard.reset();

    std::pair< t_string2weakref::iterator, bool > insertion(

        m_managers.emplace( context, xRet ) );

    if (insertion.second)

    {

        OSL_ASSERT( insertion.first->second.get() == xRet );

        // hold user, shared mgrs for whole process: live deployment

        if ( context == "user" )

            m_xUserMgr = xRet;

        else if ( context == "shared" )

            m_xSharedMgr = xRet;

        else if ( context == "bundled" )

            m_xBundledMgr = xRet;

        else if ( context == "tmp" )

            m_xTmpMgr = xRet;

        else if ( context == "bak" )

            m_xBakMgr = xRet;

    }

    else

    {

        Reference< deployment::XPackageManager > xAlreadyIn(

            insertion.first->second );

        if (xAlreadyIn.is())

        {

            guard.clear();

            try_dispose( xRet );

            xRet = std::move(xAlreadyIn);

        }

        else

        {

            insertion.first->second = xRet;

        }

    }

    return xRet;

}

} // namespace dp_manager::factory

extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*

com_sun_star_comp_deployment_PackageManagerFactory_get_implementation(

    css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const& )

{

    return cppu::acquire(new dp_manager::factory::PackageManagerFactoryImpl(context));

}

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