/*
  Copyright 2010-2012 Grégory Soutadé

  This file is part of KissCount.

  KissCount is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  KissCount is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with KissCount.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <libxml/encoding.h>
#include <libxml/xmlwriter.h>

#include <iostream>

#include "XMLExportEngine.hpp"

static XMLExportEngine xmlExportEngine;

XMLExportEngine::XMLExportEngine()
{
    KissCount::RegisterExportEngine(this);

    _shortExt = "xml";
    _longExt = _("KissCount XML files (*.xml)|*.xml");
}

XMLExportEngine::~XMLExportEngine()
{
}

bool XMLExportEngine::HandleFile(const QString& path, User* user, Database* db, KissCount* kiss)
{
    return ExportEngine::HandleFile(path, user, db, kiss);
}

bool XMLExportEngine::SaveAccounts()
{
    Account account;
    std::map<int, int>::iterator it;

    for(it=_accounts.begin(); it!=_accounts.end(); it++)
    {
	account = _user->GetAccount(it->first);

	ESCAPE_CHARS(account.name);
	ESCAPE_CHARS(account.number);

	xmlTextWriterStartElement(_writer, (const xmlChar*) "account");
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "id", (const xmlChar*) QString::number(account.id).toStdString().c_str());
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "name", (const xmlChar*) account.name.toStdString().c_str());
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "number", (const xmlChar*) account.number.toStdString().c_str());
	// xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "shared", (const xmlChar*) (account.shared ? "1" : "0"));
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "blocked", (const xmlChar*) (account.blocked ? "1" : "0"));
	// xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "default", (const xmlChar*)  (account._default ? "1" : "0"));
	// xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "is_owner", (const xmlChar*) (account.is_owner ? "1" : "0"));
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "virtual", (const xmlChar*) (account._virtual ? "1" : "0"));
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "hidden", (const xmlChar*) (account.hidden ? "1" : "0"));
	xmlTextWriterEndElement(_writer);
    }

    return true;
}

bool XMLExportEngine::SaveAccountAmounts()
{
    std::map<AccountAmount, double, AccountAmount>::iterator it;

    for(it=_accountAmounts.begin(); it!=_accountAmounts.end(); it++)
    {
	xmlTextWriterStartElement(_writer, (const xmlChar*) "account_amount");
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "account", (const xmlChar*) QString::number(it->first.account).toStdString().c_str());
	xmlTextWriterWriteFormatAttribute(_writer, (const xmlChar*) "month", "%d", it->first.month);
	xmlTextWriterWriteFormatAttribute(_writer, (const xmlChar*) "year", "%d", it->first.year);
	xmlTextWriterWriteFormatAttribute(_writer, (const xmlChar*) "amount", "%.2lf", it->second);
	xmlTextWriterEndElement(_writer);
    }

    return true;
}

bool XMLExportEngine::SaveCategories()
{
    Category category;
    std::map<int, int>::iterator it;
    int rgb;

    for(it=_categories.begin(); it!=_categories.end(); it++)
    {
	category = _user->GetCategory(it->first);

	ESCAPE_CHARS(category.name);

	xmlTextWriterStartElement(_writer, (const xmlChar*) "category");
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "id", (const xmlChar*) QString::number(category.id).toStdString().c_str());
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "parent", (const xmlChar*) QString::number(category.parent).toStdString().c_str());
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "name", (const xmlChar*) category.name.toStdString().c_str());
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "font", (const xmlChar*) category.font.toStdString().c_str());
	rgb = category.backcolor.blue();
	rgb |= category.backcolor.green() << 8;
	rgb |= category.backcolor.red() << 16;
	xmlTextWriterWriteFormatAttribute(_writer, (const xmlChar*) "backcolor", "0x%08X", rgb);
	rgb = category.forecolor.blue();
	rgb |= category.forecolor.green() << 8;
	rgb |= category.forecolor.red() << 16;
	xmlTextWriterWriteFormatAttribute(_writer, (const xmlChar*) "forecolor", "0x%08X", rgb);
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "fix_cost", (const xmlChar*) (category.fix_cost ? "1" : "0"));
	xmlTextWriterEndElement(_writer);
    }

    return true;
}

bool XMLExportEngine::SaveOperations(std::vector<Operation>* operations)
{
    std::vector<Operation>::iterator it;

    for(it=operations->begin(); it!=operations->end(); it++)
    {
	ESCAPE_CHARS(it->description);

	xmlTextWriterStartElement(_writer, (const xmlChar*) "operation");
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "id", (const xmlChar*) QString::number(it->id).toStdString().c_str());
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "parent", (const xmlChar*) QString::number(it->parent).toStdString().c_str());
	xmlTextWriterWriteFormatAttribute(_writer, (const xmlChar*) "day", "%d", it->day);
	xmlTextWriterWriteFormatAttribute(_writer, (const xmlChar*) "month", "%d", it->month);
	xmlTextWriterWriteFormatAttribute(_writer, (const xmlChar*) "year", "%d", it->year);
	xmlTextWriterWriteFormatAttribute(_writer, (const xmlChar*) "amount", "%.2lf", it->amount);
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "description", (const xmlChar*) it->description.toStdString().c_str());
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "category", (const xmlChar*) QString::number(it->category).toStdString().c_str());
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "fix_cost", (const xmlChar*) (it->fix_cost ? "1" : "0"));
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "account", (const xmlChar*) QString::number(it->account).toStdString().c_str());
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "checked", (const xmlChar*) (it->checked ? "1" : "0"));
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "transfert", (const xmlChar*) QString::number(it->transfert).toStdString().c_str());
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "formula", (const xmlChar*) it->formula.toStdString().c_str());
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "meta", (const xmlChar*) (it->meta ? "1" : "0"));
	xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "virtual", (const xmlChar*) (it->_virtual ? "1" : "0"));
	xmlTextWriterEndElement(_writer);
    }

    return true;
}

bool XMLExportEngine::SaveFile(std::vector<Operation>* operations)
{
    int rc;

    rc = ExportEngine::SaveFile(operations);

    if (!rc) return false;

    _writer = xmlNewTextWriterFilename(_path.toStdString().c_str(), 0);

    if (!_writer)
    {
	std::cout << "Error can't open the file" << std::endl;
	return false;
    }

    rc = xmlTextWriterStartDocument(_writer, 0, "UTF-8", 0);

    if (rc < 0) return false;

    xmlTextWriterStartElement(_writer, (const xmlChar*) "kisscount");
    xmlTextWriterWriteAttribute(_writer, (const xmlChar*) "version", (const xmlChar*) "1");
    
    SaveAccounts();
    SaveAccountAmounts();
    SaveCategories();
    SaveOperations(operations);

    xmlTextWriterEndElement(_writer);

    xmlTextWriterEndDocument(_writer);

    xmlFreeTextWriter(_writer);
    
    return true;
}