/* -*- 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 <xmlscript/xmllib_imexp.hxx>

#include <cppuhelper/implbase.hxx>

#include <com/sun/star/xml/input/XRoot.hpp>

#include <com/sun/star/xml/sax/SAXException.hpp>

#include <rtl/ref.hxx>

#include <o3tl/string_view.hxx>

#include <vector>

namespace xmlscript

{

inline sal_Int32 toInt32( std::u16string_view rStr )

{

    sal_Int32 nVal;

    if (rStr.size() > 2 && rStr[ 0 ] == '0' && rStr[ 1 ] == 'x')

    {

        nVal = o3tl::toUInt32(rStr.substr( 2 ),  16);

    }

    else

    {

        nVal = o3tl::toInt32(rStr);

    }

    return nVal;

}

inline bool getBoolAttr(

    bool * pRet, OUString const & rAttrName,

    css::uno::Reference< css::xml::input::XAttributes > const & xAttributes, sal_Int32 uid )

{

    OUString aValue(

        xAttributes->getValueByUidName( uid, rAttrName ) );

    if (!aValue.isEmpty())

    {

        if ( aValue == "true" )

        {

            *pRet = true;

            return true;

        }

        else if ( aValue == "false" )

        {

            *pRet = false;

            return true;

        }

        else

        {

            throw css::xml::sax::SAXException(rAttrName + ": no boolean value (true|false)!", css::uno::Reference< css::uno::XInterface >(), css::uno::Any() );

        }

    }

    return false;

}

inline bool getStringAttr(

    OUString * pRet, OUString const & rAttrName,

    css::uno::Reference< css::xml::input::XAttributes > const & xAttributes, sal_Int32 uid )

{

    *pRet = xAttributes->getValueByUidName( uid, rAttrName );

    return (!pRet->isEmpty());

}

inline bool getLongAttr(

    sal_Int32 * pRet, OUString const & rAttrName,

    css::uno::Reference< css::xml::input::XAttributes > const & xAttributes,

    sal_Int32 uid )

{

    OUString aValue(

        xAttributes->getValueByUidName( uid, rAttrName ) );

    if (!aValue.isEmpty())

    {

        *pRet = toInt32( aValue );

        return true;

    }

    return false;

}

// Library import

struct LibraryImport

    : public ::cppu::WeakImplHelper< css::xml::input::XRoot >

{

    friend class LibrariesElement;

    friend class LibraryElement;

    LibDescriptorArray* mpLibArray;

    LibDescriptor* const mpLibDesc;      // Single library mode

    sal_Int32 XMLNS_LIBRARY_UID;

    sal_Int32 XMLNS_XLINK_UID;

public:

    explicit LibraryImport( LibDescriptorArray* pLibArray )

        : mpLibArray(pLibArray)

        , mpLibDesc(nullptr)

        , XMLNS_LIBRARY_UID(0)

        , XMLNS_XLINK_UID(0)

    {

    }

    // Single library mode

    explicit LibraryImport(LibDescriptor* pLibDesc)

        : mpLibArray(nullptr)

        , mpLibDesc(pLibDesc)

        , XMLNS_LIBRARY_UID(0)

        , XMLNS_XLINK_UID(0)

    {

    }

    virtual ~LibraryImport() override;

    // XRoot

    virtual void SAL_CALL startDocument(

        css::uno::Reference< css::xml::input::XNamespaceMapping > const & xNamespaceMapping ) override;

    virtual void SAL_CALL endDocument() override;

    virtual void SAL_CALL processingInstruction(

        OUString const & rTarget, OUString const & rData ) override;

    virtual void SAL_CALL setDocumentLocator(

        css::uno::Reference< css::xml::sax::XLocator > const & xLocator ) override;

    virtual css::uno::Reference< css::xml::input::XElement > SAL_CALL startRootElement(

        sal_Int32 nUid, OUString const & rLocalName,

        css::uno::Reference< css::xml::input::XAttributes > const & xAttributes ) override;

};

class LibElementBase

    : public ::cppu::WeakImplHelper< css::xml::input::XElement >

{

protected:

    rtl::Reference<LibraryImport>  mxImport;

    rtl::Reference<LibElementBase> mxParent;

private:

    OUString const _aLocalName;

    css::uno::Reference< css::xml::input::XAttributes > _xAttributes;

public:

    LibElementBase(

        OUString aLocalName,

        css::uno::Reference< css::xml::input::XAttributes > const & xAttributes,

        LibElementBase * pParent, LibraryImport * pImport );

    virtual ~LibElementBase() override;

    // XElement

    virtual css::uno::Reference< css::xml::input::XElement > SAL_CALL getParent() override;

    virtual OUString SAL_CALL getLocalName() override;

    virtual sal_Int32 SAL_CALL getUid() override;

    virtual css::uno::Reference< css::xml::input::XAttributes > SAL_CALL getAttributes() override;

    virtual void SAL_CALL ignorableWhitespace(

        OUString const & rWhitespaces ) override;

    virtual void SAL_CALL characters( OUString const & rChars ) override;

    virtual void SAL_CALL processingInstruction(

        OUString const & rTarget, OUString const & rData ) override;

    virtual void SAL_CALL endElement() override;

    virtual css::uno::Reference< css::xml::input::XElement > SAL_CALL startChildElement(

        sal_Int32 nUid, OUString const & rLocalName,

        css::uno::Reference< css::xml::input::XAttributes > const & xAttributes ) override;

};

class LibrariesElement : public LibElementBase

{

    friend class LibraryElement;

    std::vector< LibDescriptor > mLibDescriptors;

public:

    virtual css::uno::Reference< css::xml::input::XElement > SAL_CALL startChildElement(

        sal_Int32 nUid, OUString const & rLocalName,

        css::uno::Reference< css::xml::input::XAttributes > const & xAttributes ) override;

    virtual void SAL_CALL endElement() override;

    LibrariesElement(

        OUString const & rLocalName,

        css::uno::Reference< css::xml::input::XAttributes > const & xAttributes,

        LibraryImport * pImport )

        : LibElementBase( rLocalName, xAttributes, nullptr, pImport )

        {}

};

class LibraryElement : public LibElementBase

{

    std::vector< OUString > mElements;

public:

    virtual css::uno::Reference< css::xml::input::XElement > SAL_CALL startChildElement(

        sal_Int32 nUid, OUString const & rLocalName,

        css::uno::Reference< css::xml::input::XAttributes > const & xAttributes ) override;

    virtual void SAL_CALL endElement() override;

    LibraryElement(

        OUString const & rLocalName,

        css::uno::Reference< css::xml::input::XAttributes > const & xAttributes,

        LibElementBase * pParent, LibraryImport * pImport )

        : LibElementBase( rLocalName, xAttributes, pParent, pImport )

    {}

};

}

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