/*
 * 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 "office_presentation.h"
#include "draw_page.h"

#include <xml/xmlchar.h>
#include "odf_document.h"
#include "odfcontext.h"

#include "serialize_elements.h"

namespace cpdoccore { 
namespace odf_reader {

// office:presentation
//////////////////////////////////////////////////////////////////////////////////////////////////
const wchar_t * office_presentation::ns = L"office";
const wchar_t * office_presentation::name = L"presentation";

void office_presentation::add_child_element( xml::sax * Reader, const std::wstring & Ns, const std::wstring & Name)
{
	if	CP_CHECK_NAME(L"draw", L"page") 
	{
		CP_CREATE_ELEMENT(pages_);
	}
	else if CP_CHECK_NAME(L"table", L"tracked-changes")
	{
		CP_CREATE_ELEMENT(tracked_changes_);
	}
	else if CP_CHECK_NAME(L"table", L"content-validations")
	{
		CP_CREATE_ELEMENT(content_validations_);
	}
	else if CP_CHECK_NAME(L"presentation", L"footer-decl") 
	{
		CP_CREATE_ELEMENT(footer_decls_);
	}
	else if CP_CHECK_NAME(L"presentation", L"date-time-decl") 
	{
		CP_CREATE_ELEMENT(date_time_decls_);
	}
	else if CP_CHECK_NAME(L"text", L"user-field-decls")
	{
		CP_CREATE_ELEMENT(user_fields_);
	}
	else if CP_CHECK_NAME(L"text", L"sequence-decls")
	{
		CP_CREATE_ELEMENT(sequences_);
	}
	else if CP_CHECK_NAME(L"text", L"variable-decls")
	{
		CP_CREATE_ELEMENT(variables_);
	}
}

void office_presentation::add_text(const std::wstring & Text)
{
}

void office_presentation::add_attributes( const xml::attributes_wc_ptr & Attributes )
{
}

void office_presentation::collect_page_names(oox::pptx_conversion_context& Context)
{
	for (size_t i = 0; i < pages_.size(); i++)
	{
		draw_page* page = dynamic_cast<draw_page*>(pages_[i].get());
		if (!page)
			continue;

		Context.add_page_name(page->get_draw_name());
	}
}

void office_presentation::docx_convert(oox::docx_conversion_context & Context)
{
    Context.start_office_text();
	_CP_LOG << L"[info][docx] process pages (" << pages_.size() << L" elmements)" << std::endl;
	
	for (size_t i = 0; i < pages_.size(); i++)
	{
        pages_[i]->docx_convert(Context);
    }
    Context.end_office_text();
}

void office_presentation::xlsx_convert(oox::xlsx_conversion_context & Context)
{
    Context.start_office_spreadsheet(this);
    _CP_LOG << L"[info][xlsx] process pages (" << pages_.size() << L" elmements)" << std::endl;
	
	for (size_t i = 0; i < pages_.size(); i++)
	{
        pages_[i]->xlsx_convert(Context);
    }
    Context.end_office_spreadsheet();
}

bool CheckPageLayout(std::vector<std::pair<std::wstring,std::wstring>>* vec_name_layout, draw_page* page, bool new_name)
{
	if(vec_name_layout->empty() || !page)
		return true;
	for(size_t i = 0; i < vec_name_layout->size();i++)
	{
		if((*vec_name_layout)[i].first == page->attlist_.page_layout_name_.get_value_or(L""))
		{
			if(new_name)
				page->attlist_.master_page_name_ = (*vec_name_layout)[i].second;
			return true;
		}
	}
	return false;
}

void office_presentation::pptx_convert(oox::pptx_conversion_context & Context)
{
    Context.start_office_presentation();

    _CP_LOG << L"[info][pptx] process pages(" << pages_.size() << L" elmements)" << std::endl;
	
	for (size_t i = 0; i < footer_decls_.size(); i++)
    {
		presentation_footer_decl * style = dynamic_cast<presentation_footer_decl *>(footer_decls_[i].get());

        if (!style)
            continue;

		std::wstring style_name_ = L"footer:" + style->presentation_name_.get_value_or(L"");
		Context.root()->odf_context().drawStyles().add(style_name_, footer_decls_[i]);
    }
	for (size_t i = 0; i < date_time_decls_.size(); i++)
	{
		presentation_date_time_decl * style = dynamic_cast<presentation_date_time_decl *>(date_time_decls_[i].get());

        if (!style)
            continue;

		std::wstring style_name_ = L"datetime:" + style->presentation_name_.get_value_or(L"");
		Context.root()->odf_context().drawStyles().add(style_name_, date_time_decls_[i]);
    }
	if (user_fields_)
		user_fields_->pptx_convert(Context);

	if (variables_)
		variables_->pptx_convert(Context);

	if (sequences_)
		sequences_->pptx_convert(Context);

	collect_page_names(Context);

	
	std::vector<std::pair<std::wstring,std::wstring>>* vec_name_master_page = &(Context.root()->odf_context().styleContainer().get_vec_new_name());
	unsigned int pos_in_vec = 0;
	if(!vec_name_master_page->empty())
	{
		for (size_t i = 0; i < pages_.size(); i++)
		{
			 if(i >= 1)
			{
				office_element_ptr & elm = pages_[i];
				draw_page* page = dynamic_cast<draw_page*>(elm.get());
				if(CheckPageLayout(vec_name_master_page,page,true))
					continue;
				for(size_t t = 0 ; t < i ; t++)
				{
					office_element_ptr & elm_prev_page = pages_[t];
					draw_page* prev_page = dynamic_cast<draw_page*>(elm_prev_page.get());
					if(!prev_page)
						break;
					if(page->attlist_.master_page_name_.get_value_or(L"") == prev_page->attlist_.master_page_name_.get_value_or(L"") && page->attlist_.page_layout_name_.get_value_or(L"") != prev_page->attlist_.page_layout_name_.get_value_or(L""))
					{
						page->attlist_.master_page_name_  = (*vec_name_master_page)[pos_in_vec].second;
						(*vec_name_master_page)[pos_in_vec].first = page->attlist_.page_layout_name_.get_value_or(L"");
						pos_in_vec++;
						break;
					}
				}
			}
			if(pos_in_vec == vec_name_master_page->size())
				break;
		}
	}
	for (size_t i = 0; i < pages_.size(); i++)
	{
		office_element_ptr & elm = pages_[i];
		draw_page* page = dynamic_cast<draw_page*>(elm.get());
		CheckPageLayout(vec_name_master_page,page,true);
        pages_[i]->pptx_convert(Context);
    }
    Context.end_office_presentation();
}

}
}