/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <file/FDateFunctions.hxx>
#include <tools/date.hxx>
#include <tools/time.hxx>
#include <tools/datetime.hxx>
#include <osl/diagnose.h>

using namespace connectivity;
using namespace connectivity::file;

ORowSetValue OOp_DayOfWeek::operate(const ORowSetValue& lhs) const
{
    if (lhs.isNull())
        return lhs;

    sal_Int32 nRet = 0;
    css::util::Date aD = lhs.getDate();
    Date aDate(aD.Day, aD.Month, aD.Year);
    DayOfWeek eDayOfWeek = aDate.GetDayOfWeek();
    switch (eDayOfWeek)
    {
        case MONDAY:
            nRet = 2;
            break;
        case TUESDAY:
            nRet = 3;
            break;
        case WEDNESDAY:
            nRet = 4;
            break;
        case THURSDAY:
            nRet = 5;
            break;
        case FRIDAY:
            nRet = 6;
            break;
        case SATURDAY:
            nRet = 7;
            break;
        case SUNDAY:
            nRet = 1;
            break;
        default:
            OSL_FAIL("Error in enum values for date");
    }
    return nRet;
}

ORowSetValue OOp_DayOfMonth::operate(const ORowSetValue& lhs) const
{
    if (lhs.isNull())
        return lhs;

    css::util::Date aD = lhs.getDate();
    return static_cast<sal_Int16>(aD.Day);
}

ORowSetValue OOp_DayOfYear::operate(const ORowSetValue& lhs) const
{
    if (lhs.isNull())
        return lhs;

    css::util::Date aD = lhs.getDate();
    Date aDate(aD.Day, aD.Month, aD.Year);
    return static_cast<sal_Int16>(aDate.GetDayOfYear());
}

ORowSetValue OOp_Month::operate(const ORowSetValue& lhs) const
{
    if (lhs.isNull())
        return lhs;

    css::util::Date aD = lhs.getDate();
    return static_cast<sal_Int16>(aD.Month);
}

ORowSetValue OOp_DayName::operate(const ORowSetValue& lhs) const
{
    if (lhs.isNull())
        return lhs;

    OUString sRet;
    css::util::Date aD = lhs.getDate();
    Date aDate(aD.Day, aD.Month, aD.Year);
    DayOfWeek eDayOfWeek = aDate.GetDayOfWeek();
    switch (eDayOfWeek)
    {
        case MONDAY:
            sRet = "Monday";
            break;
        case TUESDAY:
            sRet = "Tuesday";
            break;
        case WEDNESDAY:
            sRet = "Wednesday";
            break;
        case THURSDAY:
            sRet = "Thursday";
            break;
        case FRIDAY:
            sRet = "Friday";
            break;
        case SATURDAY:
            sRet = "Saturday";
            break;
        case SUNDAY:
            sRet = "Sunday";
            break;
        default:
            OSL_FAIL("Error in enum values for date");
    }
    return sRet;
}

ORowSetValue OOp_MonthName::operate(const ORowSetValue& lhs) const
{
    if (lhs.isNull())
        return lhs;

    OUString sRet;
    css::util::Date aD = lhs.getDate();
    switch (aD.Month)
    {
        case 1:
            sRet = "January";
            break;
        case 2:
            sRet = "February";
            break;
        case 3:
            sRet = "March";
            break;
        case 4:
            sRet = "April";
            break;
        case 5:
            sRet = "May";
            break;
        case 6:
            sRet = "June";
            break;
        case 7:
            sRet = "July";
            break;
        case 8:
            sRet = "August";
            break;
        case 9:
            sRet = "September";
            break;
        case 10:
            sRet = "October";
            break;
        case 11:
            sRet = "November";
            break;
        case 12:
            sRet = "December";
            break;
    }
    return sRet;
}

ORowSetValue OOp_Quarter::operate(const ORowSetValue& lhs) const
{
    if (lhs.isNull())
        return lhs;

    sal_Int32 nRet = 1;
    css::util::Date aD = lhs.getDate();
    if (aD.Month >= 4 && aD.Month < 7)
        nRet = 2;
    else if (aD.Month >= 7 && aD.Month < 10)
        nRet = 3;
    else if (aD.Month >= 10 && aD.Month <= 12)
        nRet = 4;
    return nRet;
}

ORowSetValue OOp_Week::operate(const std::vector<ORowSetValue>& lhs) const
{
    if (lhs.empty() || lhs.size() > 2)
        return ORowSetValue();

    size_t nSize = lhs.size();

    css::util::Date aD = lhs[nSize - 1].getDate();
    Date aDate(aD.Day, aD.Month, aD.Year);

    sal_Int16 nStartDay = SUNDAY;
    if (nSize == 2 && !lhs[0].isNull())
        nStartDay = lhs[0].getInt16();

    return static_cast<sal_Int16>(aDate.GetWeekOfYear(static_cast<DayOfWeek>(nStartDay)));
}

ORowSetValue OOp_Year::operate(const ORowSetValue& lhs) const
{
    if (lhs.isNull())
        return lhs;

    css::util::Date aD = lhs.getDate();
    return aD.Year;
}

ORowSetValue OOp_Hour::operate(const ORowSetValue& lhs) const
{
    if (lhs.isNull())
        return lhs;

    css::util::Time aT = lhs.getTime();
    return static_cast<sal_Int16>(aT.Hours);
}

ORowSetValue OOp_Minute::operate(const ORowSetValue& lhs) const
{
    if (lhs.isNull())
        return lhs;

    css::util::Time aT = lhs.getTime();
    return static_cast<sal_Int16>(aT.Minutes);
}

ORowSetValue OOp_Second::operate(const ORowSetValue& lhs) const
{
    if (lhs.isNull())
        return lhs;

    css::util::Time aT = lhs.getTime();
    return static_cast<sal_Int16>(aT.Seconds);
}

ORowSetValue OOp_CurDate::operate(const std::vector<ORowSetValue>& lhs) const
{
    if (!lhs.empty())
        return ORowSetValue();

    Date aCurDate(Date::SYSTEM);
    return aCurDate.GetUNODate();
}

ORowSetValue OOp_CurTime::operate(const std::vector<ORowSetValue>& lhs) const
{
    if (!lhs.empty())
        return ORowSetValue();

    tools::Time aCurTime(tools::Time::SYSTEM);
    return aCurTime.GetUNOTime();
}

ORowSetValue OOp_Now::operate(const std::vector<ORowSetValue>& lhs) const
{
    if (!lhs.empty())
        return ORowSetValue();

    DateTime aCurTime(DateTime::SYSTEM);
    return aCurTime.GetUNODateTime();
}

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