/*
  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 <iostream>

#include "GrisbiImportEngine.hpp"

#include <view/view.hpp>

static GrisbiImportEngine grisbiImportEngine;

void GrisbiImportEngine::LoadAccount(const QXmlAttributes& attrs)
{
    int id, i;
    QString account_number, name, key;
    Account ac;

    name = attrs.value("name");
    id = attrs.value("Number").toInt();
    account_number = attrs.value("Bank_account_number");
    key = attrs.value("Key");

    account_number += key;

    UNESCAPE_CHARS(name);
    UNESCAPE_CHARS(account_number);

    for (i=0; i<(int)_user->_accounts.size(); i++)
    {
	if (_user->_accounts[i].number == account_number)
	{
	    _accounts[id] = _user->_accounts[i].id;
	    return;
	}
    }

    _accounts[id] = 0;
    ac.number = account_number;
    ac.name = name;
    ac.shared = false;
    ac.blocked = false;
    ac._default = false;
    ac.is_owner = true;
    ac._virtual = false;
    ac.hidden = false;
    _unresolvedAccounts.push_back(ac);
}

void GrisbiImportEngine::LoadCategory(const QXmlAttributes& attrs)
{
    QString name;
    int id, i;
    Category cat;

    name = attrs.value("Na");
    id = attrs.value("Nb").toInt();

    UNESCAPE_CHARS(name);

    for (i=0; i<(int)_user->_categories.size(); i++)
    {
	if (_user->_categories[i].name == name)
	{
	    _categories[id] = _user->_categories[i].id;
	    return;
	}
    }

    _categories[id] = 0;
    cat.id = id;
    cat.name = name;
    cat.parent = 0;
    cat.backcolor = view::OWN_GREEN ; 
    cat.forecolor = Qt::black; 
    cat.fix_cost = false;
    _unresolvedCategories.push_back(cat);
}

void GrisbiImportEngine::LoadOperation(const QXmlAttributes& attrs)
{
    static int id=0;
    Operation op;
    QDate date;

    op.id = ++id;
    op.parent = 0;
    op.account = 0;
    op.category = 0;
    op.tag = 0;
    op.fix_cost = false;
    op.checked = false;
    op.transfert = 0;
    op.formula = "";
    op.meta = false;
    op._virtual = false;

    op.account = _accounts[attrs.value("Ac").toInt()];

    date = QDate::fromString(attrs.value("Dt"), "MM/dd/yyyy");
    op.day = date.day();
    op.month = date.month();
    op.year = date.year();
    op.amount = attrs.value("Am").toInt();
    op.category = _categories[attrs.value("Ca").toInt()];
    op.description = attrs.value("No");

    UNESCAPE_CHARS(op.description);

    _operations.push_back(op);
    _descriptions[op.id] = op.description;

    MatchPattern(op.description, op);
}

bool GrisbiImportEngine::startElement (const QString& namespaceURI, const QString& localName, const QString& qName, const QXmlAttributes& attrs)
{
    static char first = 0;

    if (!first && qName != "Grisbi")
    {
	throw "Invalid file !";
    }
    else
	first = 1;
    
    if (qName == "General")
    {
	if (attrs.value("File_version") < "0.6.0")
	    throw "Unsupported version !";

	if (attrs.value("Crypt_file") == "1")
	    throw "Crypted file !";
    }

    else if (qName == "Account")
	LoadAccount(attrs);

    else if (qName == "Category")
	LoadCategory(attrs);

    else if (qName == "Transaction")
	LoadOperation(attrs);

    return true;
}

GrisbiImportEngine::GrisbiImportEngine()
{
    KissCount::RegisterImportEngine(this);

    _shortExt = ".gsb";
    _longExt = _("Grisbi files (*.gsb)");

    _sax.setContentHandler(this);
}

GrisbiImportEngine::~GrisbiImportEngine()
{
}

bool GrisbiImportEngine::HandleFile(const QString& path, User* user, Database* db, KissCount* kiss)
{
    bool res = false;
    QFile file(path);

    if (!ImportEngine::HandleFile(path, user, db, kiss)) return false;

    QXmlInputSource *source = new QXmlInputSource(&file);
    try
    {
	res = _sax.parse(source, false);
	LinkChilds();
    }
    catch (const char* s)
    {
	std::cout << "GrisbiImportEngine :: " << s << std::endl;
	res = false;
    }

    file.close();
    delete source;

    return res;
}