/*
 * Copyright (C) Ascensio System SIA, 2009-2026
 *
 * 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, together with the
 * additional terms provided in the LICENSE file.
 *
 * 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: https://www.gnu.org/licenses/agpl-3.0.html
 *
 * You can contact Ascensio System SIA by email at info@onlyoffice.com
 * or by postal mail at 20A-6 Ernesta Birznieka-Upisha Street, Riga,
 * LV-1050, Latvia, European Union.
 *
 * The interactive user interfaces in modified versions of the Program
 * are required to display Appropriate Legal Notices in accordance with
 * Section 5 of the GNU AGPL version 3.
 *
 * No trademark rights are granted under this License.
 *
 * All non-code elements of the Product, including illustrations,
 * icon sets, and technical writing content, are licensed under the
 * Creative Commons Attribution-ShareAlike 4.0 International License:
 * https://creativecommons.org/licenses/by-sa/4.0/legalcode
 *
 * This license applies only to such non-code elements and does not
 * modify or replace the licensing terms applicable to the Program's
 * source code, which remains licensed under the GNU Affero General
 * Public License v3.
 *
 * SPDX-License-Identifier: AGPL-3.0-only
 */

#include "SharedStrings.h"

#include "../../Common/SimpleTypes_Shared.h"

#include "../../XlsbFormat/Biff12_records/BeginSst.h"
#include "../../XlsbFormat/Biff12_unions/SHAREDSTRINGS.h"
#include "../../XlsbFormat/Biff12_records/SSTItem.h"

#include "../../../MsBinaryFile/XlsFile/Format/Logic/GlobalsSubstream.h"
#include "../../../MsBinaryFile/XlsFile/Format/Logic/WorkbookStreamObject.h"
#include "../../../MsBinaryFile/XlsFile/Format/Logic/Biff_records/SST.h"
#include "../../../MsBinaryFile/XlsFile/Format/Logic/Biff_unions/SHAREDSTRINGS.h"


#include "../../Binary/XlsbFormat/FileTypes_SpreadsheetBin.h"

namespace OOX
{
	namespace Spreadsheet
	{
		CSharedStrings::CSharedStrings(OOX::Document* pMain) : OOX::File(pMain), OOX::IFileContainer(pMain)
		{
			m_nCount        = 0;
			m_bSpreadsheets = true;

			CXlsx* xlsx = dynamic_cast<CXlsx*>(File::m_pMainDocument);
			if ((xlsx) && (!xlsx->m_pSharedStrings))
				xlsx->m_pSharedStrings = this;
		}
		CSharedStrings::CSharedStrings(OOX::Document* pMain, const CPath& oRootPath, const CPath& oPath) : OOX::File(pMain), OOX::IFileContainer(pMain)
		{
			m_nCount        = 0;
			m_bSpreadsheets = true;

			CXlsx* xlsx = dynamic_cast<CXlsx*>(File::m_pMainDocument);
			if ((xlsx) && (!xlsx->m_pSharedStrings))
				xlsx->m_pSharedStrings = this;

			read( oRootPath, oPath );
		}
		CSharedStrings::~CSharedStrings()
		{
			ClearItems();
		}
		void CSharedStrings::readBin(const CPath& oPath)
		{
			CXlsb* xlsb = dynamic_cast<CXlsb*>(File::m_pMainDocument);
			if (xlsb)
			{
				XLSB::SharedStringsStreamPtr sharedStringsStream(new XLSB::SharedStringsStream);

				xlsb->ReadBin(oPath, sharedStringsStream.get());

				if (sharedStringsStream != nullptr)
				{
					auto ptr = static_cast<XLSB::SHAREDSTRINGS*>(sharedStringsStream->m_SHAREDSTRINGS.get());
					if (ptr != nullptr)
					{
						ReadAttributes(ptr->m_BrtBeginSst);

						for(auto &sstItem : ptr->m_arBrtSSTItem)
						{
							CSi* pItem = new CSi();
							auto ptr = static_cast<XLSB::SSTItem*>(sstItem.get());
							if(ptr != nullptr)
							{
								pItem->fromBin(ptr->richStr);
							}
							m_arrItems.push_back(pItem);
							m_nCount++;
						}

					}

				}

				//sharedStringsStream.reset();
			}

		}
		XLS::BaseObjectPtr CSharedStrings::WriteBin() const
		{
			XLSB::SharedStringsStreamPtr sharedStringsStream(new XLSB::SharedStringsStream);
			auto ptr(new XLSB::SHAREDSTRINGS);
			XLS::BaseObjectPtr objectPtr(ptr);

			auto atribPtr(new XLSB::BeginSst);
			ptr->m_BrtBeginSst = XLS::BaseObjectPtr{atribPtr};
			if(m_oCount.IsInit())
				atribPtr->cstTotal = m_oCount->GetValue();
			if(m_oUniqueCount.IsInit())
				atribPtr->cstUnique = m_oUniqueCount->GetValue();

			for(auto i:m_arrItems)
			{
				ptr->m_arBrtSSTItem.push_back(i->toBin());
			}
			return objectPtr;
		}
		void CSharedStrings::toXLS(XLS::BaseObjectPtr globalsSubstreamPtr) const
		{
			auto castedPtr = static_cast<XLS::GlobalsSubstream*>(globalsSubstreamPtr.get());
			auto SharedStringsObj = new XLS::SHAREDSTRINGS(XLS::WorkbookStreamObject::DefaultCodePage);
			auto Sst = new XLS::SST(XLS::WorkbookStreamObject::DefaultCodePage);
			SharedStringsObj->sstPtr = XLS::BaseObjectPtr(Sst);

			for(auto i:m_arrItems)
			{
				Sst->rgb.push_back(i->toXLS());
			}

			castedPtr->m_SHAREDSTRINGS = XLS::BaseObjectPtr(SharedStringsObj);
		}
		void CSharedStrings::read(const CPath& oPath)
		{
			//don't use this. use read(const CPath& oRootPath, const CPath& oFilePath)
			CPath oRootPath;
			read(oRootPath, oPath);
		}
		void CSharedStrings::read(const CPath& oRootPath, const CPath& oPath)
		{
			m_oReadPath = oPath;
			IFileContainer::Read( oRootPath, oPath );

			if( m_oReadPath.GetExtention() == _T(".bin"))
			{
				readBin(m_oReadPath);
				return;
			}

			XmlUtils::CXmlLiteReader oReader;

			if ( !oReader.FromFile( m_oReadPath.GetPath() ) )
			{
				//test un-upper(lower)case open - CALACATA GREECE.xlsx
				if (!m_oReadPath.FileInDirectoryCorrect())
					return;
				if ( !oReader.FromFile( m_oReadPath.GetPath() ) )
					return;
			}

			if ( !oReader.ReadNextNode() )
				return;

			std::wstring sName = XmlUtils::GetNameNoNS(oReader.GetName());
			if ( _T("sst") == sName )
			{
				ReadAttributes( oReader );

				m_nCount = 0;

				if ( !oReader.IsEmptyNode() )
				{
					int nSharedStringsDepth = oReader.GetDepth();
					while ( oReader.ReadNextSiblingNode( nSharedStringsDepth ) )
					{
						sName = XmlUtils::GetNameNoNS(oReader.GetName());

						if ( _T("si") == sName )
						{
							CSi* pItem = new CSi();
							*pItem = oReader;

							m_arrItems.push_back(pItem );
							m_nCount++;
						}
					}
				}
			}
		}
		void CSharedStrings::write(const CPath& oPath, const CPath& oDirectory, CContentTypes& oContent) const
		{
			CXlsb* xlsb = dynamic_cast<CXlsb*>(File::m_pMainDocument);
			if ((xlsb) && (xlsb->m_bWriteToXlsb))
			{
				XLS::BaseObjectPtr object = WriteBin();
				xlsb->WriteBin(oPath, object.get());
			}
			else
			{
				NSStringUtils::CStringBuilder writer;
				writer.WriteString(_T("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><sst xmlns=\"http://schemas.openxmlformats.org/spreadsheetml/2006/main\""));
				WritingStringNullableAttrInt(L"count", m_oCount, m_oCount->GetValue());
				WritingStringNullableAttrInt(L"uniqueCount", m_oUniqueCount, m_oUniqueCount->GetValue());
				writer.WriteString(_T(">"));

				for(size_t i = 0; i < m_arrItems.size(); i++)
				{
					m_arrItems[i]->toXML(writer);
				}

				writer.WriteString(_T("</sst>"));
				std::wstring sPath = oPath.GetPath();
				NSFile::CFileBinary::SaveToFile(sPath.c_str(), writer.GetData());
			}
			oContent.Registration( type().OverrideType(), oDirectory, oPath.GetFilename() );
		}
		const OOX::FileType CSharedStrings::type() const
		{
			CXlsb* xlsb = dynamic_cast<CXlsb*>(File::m_pMainDocument);
			if ((xlsb) && (xlsb->m_bWriteToXlsb))
			{
				return OOX::SpreadsheetBin::FileTypes::SharedStringsBin;
			}
			return OOX::Spreadsheet::FileTypes::SharedStrings;
		}
		const CPath CSharedStrings::DefaultDirectory() const
		{
			return type().DefaultDirectory();
		}
		const CPath CSharedStrings::DefaultFileName() const
		{
			CXlsb* xlsb = dynamic_cast<CXlsb*>(File::m_pMainDocument);
			if ((xlsb) && (xlsb->m_bWriteToXlsb))
			{
				CPath name = type().DefaultFileName();

				name.SetExtention(L"bin");
				return name;
			}
			else
			{
				return type().DefaultFileName();
			}
		}
		const CPath& CSharedStrings::GetReadPath()
		{
			return m_oReadPath;
		}
		const int CSharedStrings::AddSi(CSi* pSi)
		{
			int nIndex = m_nCount++;
			m_arrItems.push_back(pSi);
			return nIndex;
		}
		void CSharedStrings::ClearItems()
		{
			m_nCount = 0;
			for(size_t i = 0; i < m_arrItems.size(); i++)
			{
				if ( m_arrItems[i] )delete m_arrItems[i];

				m_arrItems[i] = NULL;
			}
			m_arrItems.clear();
		}
		void CSharedStrings::ReadAttributes(XmlUtils::CXmlLiteReader& oReader)
		{
			WritingElement_ReadAttributes_Start( oReader )
				WritingElement_ReadAttributes_Read_if ( oReader, _T("count"),		m_oCount )
				WritingElement_ReadAttributes_Read_if ( oReader, _T("uniqueCount"),	m_oUniqueCount )
			WritingElement_ReadAttributes_End( oReader )
		}
		void CSharedStrings::ReadAttributes(XLS::BaseObjectPtr& obj)
			{
				auto ptr = static_cast<XLSB::BeginSst*>(obj.get());

				if(ptr != nullptr)
				{
					m_oCount        = ptr->cstTotal;
					m_oUniqueCount  = ptr->cstUnique;
				}

			}

	} //Spreadsheet
} // namespace OOX