/*
  Copyright 2010-2013 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 <QXmlStreamWriter>
#include <QFile>

#include <iostream>

#include "XMLExportEngine.hpp"

static XMLExportEngine xmlExportEngine;

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

    _shortExt = ".xml";
    _longExt = _("KissCount XML files (*.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++)
    {
	try
	{
	    account = _user->GetAccount(it->first);
	}
	catch(User::AccountNotFound)
	{
	    account.id = it->first;
	    account.name = "Unknown";
	    account.blocked = false;
	    account._virtual = false;
	    account.hidden = false;
	}

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

	_writer->writeStartElement("account");
	_writer->writeAttribute("id", QString::number(account.id));
	_writer->writeAttribute("name", account.name);
	_writer->writeAttribute("number", account.number);
	// _writer->writeAttribute("shared", (account.shared ? "1" : "0"));
	_writer->writeAttribute("blocked", (account.blocked ? "1" : "0"));
	// _writer->writeAttribute("default",  (account._default ? "1" : "0"));
	// _writer->writeAttribute("is_owner", (account.is_owner ? "1" : "0"));
	_writer->writeAttribute("virtual", (account._virtual ? "1" : "0"));
	_writer->writeAttribute("hidden", (account.hidden ? "1" : "0"));
	_writer->writeEndElement();
    }

    return true;
}

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

    for(it=_accountAmounts.begin(); it!=_accountAmounts.end(); it++)
    {
	_writer->writeStartElement("account_amount");
	_writer->writeAttribute("account", QString::number(it->first.account));
	_writer->writeAttribute("month", QString::number(it->first.month));
	_writer->writeAttribute("year", QString::number(it->first.year));
	_writer->writeAttribute("amount", v.sprintf("%d", it->second));
	_writer->writeEndElement();
    }

    return true;
}

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

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

	ESCAPE_CHARS(category.name);

	_writer->writeStartElement("category");
	_writer->writeAttribute("id", QString::number(category.id));
	_writer->writeAttribute("parent", QString::number(category.parent));
	_writer->writeAttribute("name", category.name);
	_writer->writeAttribute("font", category.font);
	rgb = category.backcolor.blue();
	rgb |= category.backcolor.green() << 8;
	rgb |= category.backcolor.red() << 16;
	_writer->writeAttribute("backcolor", v.sprintf("0x%08X", rgb));
	rgb = category.forecolor.blue();
	rgb |= category.forecolor.green() << 8;
	rgb |= category.forecolor.red() << 16;
	_writer->writeAttribute("forecolor", v.sprintf("0x%08X", rgb));
	_writer->writeAttribute("fix_cost", (category.fix_cost ? "1" : "0"));
	_writer->writeEndElement();
    }

    return true;
}

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

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

	_writer->writeStartElement("operation");
	_writer->writeAttribute("id", QString::number(it->id));
	_writer->writeAttribute("parent", QString::number(it->parent));
	_writer->writeAttribute("day", QString::number(it->day));
	_writer->writeAttribute("month", QString::number(it->month));
	_writer->writeAttribute("year", QString::number(it->year));
	_writer->writeAttribute("amount", v.sprintf("%d", it->amount));
	_writer->writeAttribute("description", it->description);
	_writer->writeAttribute("category", QString::number(it->category));
	_writer->writeAttribute("fix_cost", (it->fix_cost ? "1" : "0"));
	_writer->writeAttribute("account", QString::number(it->account));
	_writer->writeAttribute("checked", (it->checked ? "1" : "0"));
	_writer->writeAttribute("transfert", QString::number(it->transfert));
	_writer->writeAttribute("formula", it->formula);
	_writer->writeAttribute("meta", (it->meta ? "1" : "0"));
	_writer->writeAttribute("virtual", (it->_virtual ? "1" : "0"));
	_writer->writeEndElement();
    }

    return true;
}

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

    rc = ExportEngine::SaveFile(operations);

    if (!rc) return false;

    if (!file.open(QIODevice::ReadWrite|QIODevice::Truncate))
    {
	std::cout << "Error can't open the file " << _path.toStdString() << std::endl;
	return false;
    }

    _writer = new QXmlStreamWriter(&file);

    _writer->setCodec("UTF-8");
    _writer->setAutoFormatting(true);
    _writer->setAutoFormattingIndent(4);
    _writer->writeStartDocument("1.0");
    _writer->writeStartElement("kisscount");
    _writer->writeAttribute("version", "1");
    
    SaveAccounts();
    SaveAccountAmounts();
    SaveCategories();
    SaveOperations(operations);

    _writer->writeEndElement();
    _writer->writeEndDocument();

    file.flush();
    file.close();

    delete _writer;
    
    return true;
}