/*
 * (c) Copyright Ascensio System SIA 2010-2018
 *
 * This program is a free software product. You can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License (AGPL)
 * version 3 as published by the Free Software Foundation. In accordance with
 * Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
 * that Ascensio System SIA expressly excludes the warranty of non-infringement
 * of any third-party rights.
 *
 * This program is distributed WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE. For
 * details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
 *
 * You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia,
 * EU, LV-1021.
 *
 * The  interactive user interfaces in modified source and object code versions
 * of the Program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU AGPL version 3.
 *
 * Pursuant to Section 7(b) of the License you must retain the original Product
 * logo when distributing the program. Pursuant to Section 7(e) we decline to
 * grant you any rights under trademark law for use of our trademarks.
 *
 * All the Product's GUI elements, including illustrations and icon sets, as
 * well as technical writing content are licensed under the terms of the
 * Creative Commons Attribution-ShareAlike 4.0 International. See the License
 * terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
 *
 */
#pragma once

#include "OfficeDrawing/RecordFactory.h"

#include "OfficeDrawing/DrawingContainer.h"
#include "OfficeDrawing/DrawingRecord.h"
#include "OfficeDrawing/DrawingGroup.h"
#include "OfficeDrawing/GroupContainer.h"
#include "OfficeDrawing/Shape.h"

namespace DocFileFormat
{
	class OfficeArtContent
	{
	private:
		enum DrawingType
		{
			MainDocument,
			Header
		};

		struct OfficeArtWordDrawing
		{
			DrawingType dgglbl;
			DrawingContainer* container;
		};

	public:

		OfficeArtContent (const FileInformationBlock* pFIB, POLE::Stream* pStream): m_pDrawingGroupData(NULL), m_pBackgroud(NULL)
		{
			VirtualStreamReader oStearmReader(pStream, 0 , pFIB->m_nWordVersion);

			if (pFIB->m_FibWord97.fcDggInfo > oStearmReader.GetSize()) return;

            oStearmReader.Seek (pFIB->m_FibWord97.fcDggInfo, 0/*STREAM_SEEK_SET*/);

			if (pFIB->m_FibWord97.lcbDggInfo > 0)
			{
				unsigned int maxPosition	=	(int)(pFIB->m_FibWord97.fcDggInfo + pFIB->m_FibWord97.lcbDggInfo);

				// read the DrawingGroupData
				m_pDrawingGroupData			=	static_cast<DrawingGroup*>(RecordFactory::ReadRecord (&oStearmReader, 0));

				while (oStearmReader.GetPosition() < maxPosition)
				{
					OfficeArtWordDrawing drawing;
					drawing.dgglbl			=	(DrawingType)oStearmReader.ReadByte();
					drawing.container		=	static_cast<DrawingContainer*>(RecordFactory::ReadRecord (&oStearmReader, 0));

					for (unsigned int i = 0; i < drawing.container->Children.size(); ++i)
					{
						Record* groupChild = drawing.container->Children[i];
						if (groupChild)
						{
							if (GroupContainer::TYPE_CODE_0xF003 == groupChild->TypeCode)
							{
								// the child is a subgroup
								GroupContainer* group	=	static_cast<GroupContainer*>(groupChild);
								if (group)
								{
									group->Index =	i;
								}
							}
							else if (ShapeContainer::TYPE_CODE_0xF004 == groupChild->TypeCode)
							{
								// the child is a shape
								ShapeContainer* shape	=	static_cast<ShapeContainer*>(groupChild);
								if (shape)
								{
									shape->Index = i;
									if (shape->isBackground())
									{
										m_pBackgroud = shape;
									}
								}
							}
						}
					}

					m_arrDrawings.push_back( drawing );
				}
			}
		}

		~OfficeArtContent()
		{
			RELEASEOBJECT (m_pDrawingGroupData);

			for ( std::list<OfficeArtWordDrawing>::iterator iter = m_arrDrawings.begin(); iter != m_arrDrawings.end(); ++iter)
				RELEASEOBJECT(iter->container);  
		}
		inline ShapeContainer* GetShapeBackgound()
		{
			return m_pBackgroud;
		}
		inline ShapeContainer* GetShapeContainer (int spid)
		{
			ShapeContainer* ret = NULL;

			for (std::list<OfficeArtWordDrawing>::iterator iter = m_arrDrawings.begin(); iter != m_arrDrawings.end(); ++iter)
			{
				GroupContainer* group = iter->container->FirstChildWithType<GroupContainer>();
				if (group)
				{
					for (unsigned int i = 1; i < group->Children.size(); ++i)
					{
						Record* groupChild = group->Children[i];

						if ( groupChild->TypeCode == GroupContainer::TYPE_CODE_0xF003)
						{
							//It's a group of shapes
							GroupContainer* subgroup	=	static_cast<GroupContainer*>(groupChild);

							//the referenced shape must be the first shape in the group
							ShapeContainer* container	=	static_cast<ShapeContainer*>(subgroup->Children[0]);
							Shape* shape				=	static_cast<Shape*>(container->Children[1]);

							if (shape->GetShapeID() == spid)
							{
								ret = container;
								break;
							}
						}
						else if ( groupChild->TypeCode == ShapeContainer::TYPE_CODE_0xF004 )
						{
							//It's a singe shape
							ShapeContainer* container	=	static_cast<ShapeContainer*>(groupChild);
							Shape* shape				=	static_cast<Shape*>(container->Children[0]);

							if (shape->GetShapeID() == spid)
							{
								ret	 =	container;
								break;
							}
						}
					}
				}
				else
				{
					continue;
				}

				if (ret)
					break;
			}

			return ret;
		}

		inline const DrawingGroup* GetDrawingGroup () const
		{
			return m_pDrawingGroupData;
		}

	private:
		ShapeContainer*					m_pBackgroud;
		DrawingGroup*					m_pDrawingGroupData;
		std::list<OfficeArtWordDrawing>	m_arrDrawings;
	};
}