/* -*- 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 .

 */

#pragma once

#include <rtl/ref.hxx>

#include <cppuhelper/implbase.hxx>

#include <com/sun/star/embed/XStorage.hpp>

#include <com/sun/star/embed/XTransactedObject.hpp>

#include <com/sun/star/io/XOutputStream.hpp>

#include <com/sun/star/io/XStream.hpp>

#include <com/sun/star/io/XTruncate.hpp>

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

#include <com/sun/star/uno/XAggregation.hpp>

#include "tdoc_storage.hxx"

#include <mutex>

namespace tdoc_ucp {

class OfficeDocumentsManager;

class ParentStorageHolder

{

public:

    ParentStorageHolder(

        css::uno::Reference< css::embed::XStorage > xParentStorage,

        const OUString & rUri );

    bool isParentARootStorage() const

    { return m_bParentIsRootStorage; }

    css::uno::Reference< css::embed::XStorage >

    getParentStorage() const

    {

        std::scoped_lock aGuard( m_aMutex );

        return m_xParentStorage;

    }

    void clearParentStorage()

    {

        std::scoped_lock aGuard( m_aMutex );

        m_xParentStorage = nullptr;

    }

private:

    mutable std::mutex m_aMutex;

    css::uno::Reference< css::embed::XStorage > m_xParentStorage;

    bool                                  m_bParentIsRootStorage;

};

typedef

    cppu::WeakImplHelper<

        css::embed::XStorage,

        css::embed::XTransactedObject > StorageUNOBase;

class Storage : public StorageUNOBase, public ParentStorageHolder

{

public:

    Storage(

        const css::uno::Reference< css::uno::XComponentContext > & rxContext,

        rtl::Reference< StorageElementFactory > xFactory,

        const OUString & rUri,

        const css::uno::Reference< css::embed::XStorage > & xParentStorage,

        const css::uno::Reference< css::embed::XStorage > & xStorageToWrap );

    virtual ~Storage() override;

    // XInterface

    virtual css::uno::Any SAL_CALL queryInterface(

            const css::uno::Type& aType ) override;

    virtual void SAL_CALL acquire()

        noexcept override;

    virtual void SAL_CALL release()

        noexcept override;

    // XTypeProvider (implemented by base, but needs to be overridden for

    //                delegating to aggregate)

    virtual css::uno::Sequence< css::uno::Type > SAL_CALL

    getTypes() override;

    virtual css::uno::Sequence< sal_Int8 > SAL_CALL

    getImplementationId() override;

    // XComponent ( one of XStorage bases )

    virtual void SAL_CALL

    dispose() override;

    virtual void SAL_CALL

    addEventListener( const css::uno::Reference< css::lang::XEventListener > & xListener ) override;

    virtual void SAL_CALL

    removeEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener ) override;

    // XNameAccess ( one of XStorage bases )

    virtual css::uno::Any SAL_CALL

    getByName( const OUString& aName ) override;

    virtual css::uno::Sequence< OUString > SAL_CALL

    getElementNames() override;

    virtual sal_Bool SAL_CALL

    hasByName( const OUString& aName ) override;

    // XElementAccess (base of XNameAccess)

    virtual css::uno::Type SAL_CALL

    getElementType() override;

    virtual sal_Bool SAL_CALL

    hasElements() override;

    // XStorage

    virtual void SAL_CALL

    copyToStorage( const css::uno::Reference< css::embed::XStorage >& xDest ) override;

    virtual css::uno::Reference< css::io::XStream > SAL_CALL

    openStreamElement( const OUString& aStreamName,

                       sal_Int32 nOpenMode ) override;

    virtual css::uno::Reference< css::io::XStream > SAL_CALL

    openEncryptedStreamElement( const OUString& aStreamName,

                                sal_Int32 nOpenMode,

                                const OUString& aPassword ) override;

    virtual css::uno::Reference< css::embed::XStorage > SAL_CALL

    openStorageElement( const OUString& aStorName,

                        sal_Int32 nOpenMode ) override;

    virtual css::uno::Reference< css::io::XStream > SAL_CALL

    cloneStreamElement( const OUString& aStreamName ) override;

    virtual css::uno::Reference< css::io::XStream > SAL_CALL

    cloneEncryptedStreamElement( const OUString& aStreamName,

                                 const OUString& aPassword ) override;

    virtual void SAL_CALL

    copyLastCommitTo( const css::uno::Reference<

                        css::embed::XStorage >& xTargetStorage ) override;

    virtual void SAL_CALL

    copyStorageElementLastCommitTo( const OUString& aStorName,

                                    const css::uno::Reference<

                                        css::embed::XStorage > &

                                            xTargetStorage ) override;

    virtual sal_Bool SAL_CALL

    isStreamElement( const OUString& aElementName ) override;

    virtual sal_Bool SAL_CALL

    isStorageElement( const OUString& aElementName ) override;

    virtual void SAL_CALL

    removeElement( const OUString& aElementName ) override;

    virtual void SAL_CALL

    renameElement( const OUString& aEleName,

                   const OUString& aNewName ) override;

    virtual void SAL_CALL

    copyElementTo( const OUString& aElementName,

                   const css::uno::Reference< css::embed::XStorage >& xDest,

                   const OUString& aNewName ) override;

    virtual void SAL_CALL

    moveElementTo( const OUString& aElementName,

                   const css::uno::Reference< css::embed::XStorage >& xDest,

                   const OUString& rNewName ) override;

    // XTransactedObject

    virtual void SAL_CALL commit() override;

    virtual void SAL_CALL revert() override;

private:

    rtl::Reference< StorageElementFactory >         m_xFactory;

    css::uno::Reference< css::uno::XAggregation >         m_xAggProxy;

    css::uno::Reference< css::embed::XStorage >           m_xWrappedStorage;

    css::uno::Reference< css::embed::XTransactedObject >  m_xWrappedTransObj;

    css::uno::Reference< css::lang::XComponent >          m_xWrappedComponent;

    css::uno::Reference< css::lang::XTypeProvider >       m_xWrappedTypeProv;

    bool                                                  m_bIsDocumentStorage;

    StorageElementFactory::StorageMap::iterator m_aContainerIt;

    friend class StorageElementFactory;

};

typedef

    cppu::WeakImplHelper<

        css::io::XOutputStream,

        css::lang::XComponent > OutputStreamUNOBase;

class OutputStream : public OutputStreamUNOBase, public ParentStorageHolder

{

public:

    OutputStream(

        const css::uno::Reference< css::uno::XComponentContext > & rxContext,

        const OUString & rUri,

        const css::uno::Reference< css::embed::XStorage >  & xParentStorage,

        const css::uno::Reference< css::io::XOutputStream > & xStreamToWrap );

    virtual ~OutputStream() override;

    // XInterface

    virtual css::uno::Any SAL_CALL

    queryInterface( const css::uno::Type& aType ) override;

    // XTypeProvider (implemented by base, but needs to be overridden for

    //                delegating to aggregate)

    virtual css::uno::Sequence< css::uno::Type > SAL_CALL

    getTypes() override;

    virtual css::uno::Sequence< sal_Int8 > SAL_CALL

    getImplementationId() override;

    // XOutputStream

    virtual void SAL_CALL

    writeBytes( const css::uno::Sequence< sal_Int8 >& aData ) override;

    virtual void SAL_CALL

    flush(  ) override;

    // Note: We need to intercept this one.

    virtual void SAL_CALL

    closeOutput(  ) override;

    // XComponent

    // Note: We need to intercept this one.

    virtual void SAL_CALL

    dispose() override;

    virtual void SAL_CALL

    addEventListener( const css::uno::Reference< css::lang::XEventListener >& xListener ) override;

    virtual void SAL_CALL

    removeEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener ) override;

private:

    css::uno::Reference<

        css::uno::XAggregation >     m_xAggProxy;

    css::uno::Reference<

        css::io::XOutputStream >     m_xWrappedStream;

    css::uno::Reference<

        css::lang::XComponent >      m_xWrappedComponent;

    css::uno::Reference<

        css::lang::XTypeProvider >   m_xWrappedTypeProv;

};

typedef cppu::WeakImplHelper< css::io::XStream,

                               css::io::XOutputStream,

                               css::io::XTruncate,

                               css::io::XInputStream,

                               css::lang::XComponent >

        StreamUNOBase;

class Stream : public StreamUNOBase, public ParentStorageHolder

{

public:

    Stream(

        const css::uno::Reference< css::uno::XComponentContext > & rxContext,

        rtl::Reference<OfficeDocumentsManager> const & docsMgr,

        const OUString & rUri,

        const css::uno::Reference< css::embed::XStorage >  & xParentStorage,

        const css::uno::Reference< css::io::XStream > & xStreamToWrap );

    virtual ~Stream() override;

    // XInterface

    virtual css::uno::Any SAL_CALL

    queryInterface( const css::uno::Type& aType ) override;

    // XTypeProvider (implemented by base, but needs to be overridden for

    //                delegating to aggregate)

    virtual css::uno::Sequence< css::uno::Type > SAL_CALL

    getTypes() override;

    virtual css::uno::Sequence< sal_Int8 > SAL_CALL

    getImplementationId() override;

    // XStream

    virtual css::uno::Reference< css::io::XInputStream > SAL_CALL

    getInputStream() override;

    virtual css::uno::Reference< css::io::XOutputStream > SAL_CALL

    getOutputStream() override;

    // XOutputStream

    virtual void SAL_CALL

    writeBytes( const css::uno::Sequence< sal_Int8 >& aData ) override;

    virtual void SAL_CALL

    flush() override;

    virtual void SAL_CALL

    closeOutput() override;

    // XTruncate

    virtual void SAL_CALL

    truncate() override;

    // XInputStream

    virtual sal_Int32 SAL_CALL

    readBytes( css::uno::Sequence< sal_Int8 >& aData,

               sal_Int32 nBytesToRead ) override;

    virtual sal_Int32 SAL_CALL

    readSomeBytes( css::uno::Sequence< sal_Int8 >& aData,

                   sal_Int32 nMaxBytesToRead ) override;

    virtual void SAL_CALL

    skipBytes( sal_Int32 nBytesToSkip ) override;

    virtual sal_Int32 SAL_CALL

    available() override;

    virtual void SAL_CALL

    closeInput() override;

    // XComponent

    // Note: We need to intercept this one.

    virtual void SAL_CALL

    dispose() override;

    virtual void SAL_CALL

    addEventListener( const css::uno::Reference< css::lang::XEventListener >& xListener ) override;

    virtual void SAL_CALL

    removeEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener ) override;

private:

    /// @throws css::io::IOException

    void commitChanges();

    rtl::Reference<OfficeDocumentsManager> m_docsMgr;

    OUString m_uri;

    css::uno::Reference<

        css::uno::XAggregation >     m_xAggProxy;

    css::uno::Reference<

        css::io::XStream >           m_xWrappedStream;

    css::uno::Reference<

        css::io::XOutputStream >     m_xWrappedOutputStream;

    css::uno::Reference<

        css::io::XTruncate >         m_xWrappedTruncate;

    css::uno::Reference<

        css::io::XInputStream >      m_xWrappedInputStream;

    css::uno::Reference<

        css::lang::XComponent >      m_xWrappedComponent;

    css::uno::Reference<

        css::lang::XTypeProvider >   m_xWrappedTypeProv;

};

} // namespace tdoc_ucp

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