/*
  Copyright 2010-2011 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 "../Database.hpp"

#include "OFXImportEngine.hpp"

static OFXImportEngine ofxImportEngine;

int OFXImportEngine::account_cb(const struct OfxAccountData data, void * account_data)
{
    int i, id;
    OFXImportEngine* _this = (OFXImportEngine*) account_data;
    QString account_number = QString(data.account_number);
    Account ac;
    static int unknownAccount = 0;

    _this->_curAccount = 0;

    UNESCAPE_CHARS(account_number);

    id = Database::HashPassword(data.account_id).toInt(0, 16);

    for (i=0; i<(int)_this->_user->_accounts.size(); i++)
    {
	if (_this->_user->_accounts[i].number == account_number)
	{
	    _this->_accounts[id] = _this->_user->_accounts[i].id;
	    _this->_curAccount = _this->_user->_accounts[i].id;
	    // std::cout << "Account " << data.account_number << " is " << i << std::endl;
	    //_this->_unresolvedAccounts.push_back(account_number);
	    break;
	}
    }

    if (!_this->_curAccount)
    {
	_this->_curAccount = _this->_accounts[id] = --unknownAccount;
	ac.number = account_number;
	ac.shared = false;
	ac.blocked = false;
	ac._default = false;
	ac.is_owner = true;
	ac._virtual = false;
	_this->_unresolvedAccounts.push_back(ac);
    }

    return 0;
}

int OFXImportEngine::transaction_cb(const struct OfxTransactionData data, void * transaction_data)
{
    static int id=0;
    OFXImportEngine* _this = (OFXImportEngine*) transaction_data;
    Operation op;
    struct tm t;

    if (!data.amount_valid ||
	(!data.date_posted_valid && !data.date_initiated_valid)) return 1;

    op.id = ++id;
    op.parent = 0;
    op.category = 0;
    op.fix_cost = false;
    op.account = _this->_curAccount;
    op.checked = false;
    op.transfert = 0;
    op.formula = "";
    op.meta = false;
    op._virtual = false;

    op.amount = data.amount;

    if (data.date_initiated_valid)
	gmtime_r(&data.date_initiated, &t);
    else
	gmtime_r(&data.date_posted, &t);

    op.day = t.tm_mday;
    op.month = t.tm_mon;
    op.year = t.tm_year+1900;

    if (data.name_valid)
	op.description = data.name;

    if (data.memo_valid)
    {
	if (op.description.size())
	    op.description += " ";
	op.description += data.memo;
    }

    UNESCAPE_CHARS(op.description);

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

    _this->MatchPattern(op.description, op);

    return 0;
}

int OFXImportEngine::account_balance_cb(const struct OfxStatementData data, void * statement_data)
{
    // OFXImportEngine* _this = (OFXImportEngine*) statement_data;
    
    return 0;
}

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

    _ctx = libofx_get_new_context();

    if (!_ctx)
	throw std::string("Unable to initialize libofx");

    ofx_set_account_cb(_ctx, account_cb, this);
    ofx_set_transaction_cb(_ctx, transaction_cb, this);
    ofx_set_statement_cb(_ctx, account_balance_cb, this);

    _shortExt = "ofx";
    _longExt = _("OFX files (*.ofx)|*.ofx");
}

OFXImportEngine::~OFXImportEngine()
{
    if (_ctx)
	libofx_free_context(_ctx);
}

bool OFXImportEngine::HandleFile(const QString& path, User* user, Database* db, KissCount* kiss)
{
    if (!ImportEngine::HandleFile(path, user, db, kiss)) return false;

    return !libofx_proc_file(_ctx, path.toStdString().c_str(), AUTODETECT);
}