/* -*- 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 .

 */

#ifndef INCLUDED_TOOLS_INETMSG_HXX

#define INCLUDED_TOOLS_INETMSG_HXX

#include <tools/toolsdllapi.h>

#include <rtl/string.hxx>

#include <rtl/ustring.hxx>

#include <tools/inetmime.hxx>

#include <tools/stream.hxx>

#include <string_view>

#include <utility>

#include <vector>

#include <map>

#include <memory>

#include <config_options.h>

class DateTime;

class SAL_WARN_UNUSED INetMessageHeader

{

    OString m_aName;

    OString m_aValue;

public:

    INetMessageHeader()

    {}

    INetMessageHeader(OString aName, OString aValue)

        : m_aName (std::move(aName)), m_aValue (std::move(aValue))

    {}

    INetMessageHeader (

        const INetMessageHeader& rHdr)

        : m_aName (rHdr.m_aName), m_aValue (rHdr.m_aValue)

    {}

    INetMessageHeader& operator= (const INetMessageHeader& rHdr)

    {

        m_aName  = rHdr.m_aName;

        m_aValue = rHdr.m_aValue;

        return *this;

    }

    const OString& GetName() const { return m_aName; }

    const OString& GetValue() const { return m_aValue; }

};

enum class InetMessageMime

{

    VERSION                    = 0,

    CONTENT_DISPOSITION        = 1,

    CONTENT_TYPE               = 2,

    CONTENT_TRANSFER_ENCODING  = 3,

    NUMHDR                     = 4,

};

class SAL_WARN_UNUSED UNLESS_MERGELIBS(TOOLS_DLLPUBLIC) INetMIMEMessage

{

    ::std::vector< std::unique_ptr<INetMessageHeader> >

                    m_aHeaderList;

    std::unique_ptr<SvStream> m_xDocLB;

    ::std::map<InetMessageMime, sal_uInt32>   m_nMIMEIndex;

    INetMIMEMessage*                          pParent;

    ::std::vector< std::unique_ptr<INetMIMEMessage> >

                                              aChildren;

    OString                 m_aBoundary;

    OUString GetHeaderValue_Impl (

        sal_uInt32 nIndex) const

    {

        if ( nIndex < m_aHeaderList.size() ) {

            return INetMIME::decodeHeaderFieldBody(m_aHeaderList[ nIndex ]->GetValue());

        } else {

            return OUString();

        }

    }

    void SetHeaderField_Impl (

        const INetMessageHeader &rHeader, sal_uInt32 &rnIndex)

    {

        INetMessageHeader *p = new INetMessageHeader (rHeader);

        if (m_aHeaderList.size() <= rnIndex)

        {

            rnIndex = m_aHeaderList.size();

            m_aHeaderList.emplace_back( p );

        }

        else

        {

            m_aHeaderList[ rnIndex ].reset(p);

        }

    }

    void SetHeaderField_Impl (

        const OString &rName,

        const OUString &rValue,

        sal_uInt32 &rnIndex);

    bool IsMessage() const

    {

        OUString aType (GetContentType());

        return aType.matchIgnoreAsciiCase("message/");

    }

    INetMIMEMessage (const INetMIMEMessage& rMsg) = delete;

    INetMIMEMessage& operator= (const INetMIMEMessage& rMsg) = delete;

public:

    INetMIMEMessage();

    ~INetMIMEMessage();

    sal_uInt32 GetHeaderCount() const { return m_aHeaderList.size(); }

    INetMessageHeader GetHeaderField (sal_uInt32 nIndex) const

    {

        if ( nIndex < m_aHeaderList.size() ) {

            return *m_aHeaderList[ nIndex ];

        } else {

            return INetMessageHeader();

        }

    }

    SvStream* GetDocumentLB() const { return m_xDocLB.get(); }

    void      SetDocumentLB (std::unique_ptr<SvStream> pDocLB) { m_xDocLB = std::move(pDocLB); }

    static bool ParseDateField (

        std::u16string_view rDateField, DateTime& rDateTime);

    void     SetMIMEVersion (const OUString& rVersion);

    void     SetContentDisposition (const OUString& rDisposition);

    void     SetContentType (const OUString& rType);

    OUString GetContentType() const

    {

        return GetHeaderValue_Impl(

            m_nMIMEIndex.at(InetMessageMime::CONTENT_TYPE));

    }

    void     SetContentTransferEncoding (const OUString& rEncoding);

    OUString GetDefaultContentType ();

    // Message container methods.

    bool IsContainer() const

    {

        return (IsMessage() || IsMultipart());

    }

    bool IsMultipart() const

    {

        OUString aType (GetContentType());

        return aType.matchIgnoreAsciiCase("multipart/");

    }

    INetMIMEMessage* GetChild (sal_uInt32 nIndex) const

    {

        return ( nIndex < aChildren.size() ) ? aChildren[ nIndex ].get() : nullptr;

    }

    INetMIMEMessage* GetParent() const { return pParent; }

    void EnableAttachMultipartFormDataChild();

    void AttachChild( std::unique_ptr<INetMIMEMessage> pChildMsg );

    const OString& GetMultipartBoundary() const { return m_aBoundary; }

};

#endif

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */