/*
 *
 *  Copyright (C) 2015-2019, Open Connections GmbH
 *  All rights reserved.  See COPYRIGHT file for details.
 *
 *  This software and supporting documentation are maintained by
 *
 *    OFFIS e.V.
 *    R&D Division Health
 *    Escherweg 2
 *    D-26121 Oldenburg, Germany
 *
 *
 *  Module:  dcmfg
 *
 *  Author:  Michael Onken
 *
 *  Purpose: Class for managing US Image Description Functional Group
 *
 */

#include "dcmtk/config/osconfig.h"

#include "dcmtk/dcmdata/dcdeftag.h"
#include "dcmtk/dcmfg/fgusimagedescription.h"
#include "dcmtk/dcmiod/iodtypes.h"
#include "dcmtk/dcmiod/iodutil.h"

// Constructor
FGUSImageDescription::FGUSImageDescription()
    : FGBase(DcmFGTypes::EFG_USIMAGEDESCRIPTION)
    , m_FrameType(DCM_FrameType)
    , m_VolumetricProperties(DCM_VolumetricProperties)
    , m_VolumeBasedCalculationTechnique(DCM_VolumeBasedCalculationTechnique)
{
}

FGUSImageDescription::~FGUSImageDescription()
{
    // nothing to do
}

FGBase* FGUSImageDescription::clone() const
{
    FGUSImageDescription* copy = new FGUSImageDescription();
    if (copy)
    {
        copy->m_FrameType                       = this->m_FrameType;
        copy->m_VolumetricProperties            = this->m_VolumetricProperties;
        copy->m_VolumeBasedCalculationTechnique = this->m_VolumeBasedCalculationTechnique;
    }
    return copy;
}

void FGUSImageDescription::clearData()
{
    m_FrameType.clear();
    m_VolumetricProperties.clear();
    m_VolumeBasedCalculationTechnique.clear();
}

OFCondition FGUSImageDescription::check() const
{
    // Checks in read() and write() are sufficient for now
    return EC_Normal;
}

// --- get() functionality ---

OFCondition FGUSImageDescription::getFrameType(OFString& value, const long signed int pos)
{
    return DcmIODUtil::getStringValueFromElement(m_FrameType, value, pos);
}

OFCondition FGUSImageDescription::getVolumetricProperties(OFString& value, const long signed int pos)
{
    return DcmIODUtil::getStringValueFromElement(m_VolumetricProperties, value, pos);
}

OFCondition FGUSImageDescription::getVolumeBasedCalculationTechnique(OFString& value, const long signed int pos)
{
    return DcmIODUtil::getStringValueFromElement(m_VolumeBasedCalculationTechnique, value, pos);
}

// --- set() functionality ---

OFCondition FGUSImageDescription::setFrameType(const DcmFGTypes::E_FGUSFrameType pixelDataChar,
                                               const OFString& imageFlavor,
                                               const OFString& derivedPixelContrast,
                                               const OFBool checkValue)
{
    // Build a string of VM 4 with first two values at least set
    OFString value;
    switch (pixelDataChar)
    {
        case (DcmFGTypes::EFGFT_ORIGINAL):
            value = "ORIGINAL\\PRIMARY\\";
            break;
        case (DcmFGTypes::EFGFT_DERIVED):
            value = "DERIVED\\PRIMARY\\";
            break;
        default:
            return IOD_EC_InvalidElementValue;
    }
    value += imageFlavor;
    value += "\\";
    value += derivedPixelContrast;

    OFCondition result;
    if (checkValue)
    {
        result = DcmCodeString::checkStringValue(value, "4");
    }
    if (result.good())
    {
        result = m_FrameType.putOFStringArray(value);
    }
    return result;
}

OFCondition FGUSImageDescription::setVolumetricProperties(const OFString& value, const OFBool checkValue)
{
    OFCondition result;
    if (checkValue)
    {
        if ((value != "VOLUME") && (value != "SAMPLED") && (value != "DISTORTED") && (value != "MIXED"))
        {
            result = IOD_EC_InvalidElementValue;
        }
        else
            result = DcmCodeString::checkStringValue(value, "1");
    }
    if (result.good())
    {
        result = m_VolumetricProperties.putOFStringArray(value);
    }
    return result;
}

OFCondition FGUSImageDescription::setVolumeBasedCalculationTechnique(const OFString& value, const OFBool checkValue)
{
    OFCondition result = (checkValue) ? DcmCodeString::checkStringValue(value, "1") : EC_Normal;
    if (result.good())
        result = m_VolumeBasedCalculationTechnique.putOFStringArray(value);
    return result;
}

/// Read Frame Content Sequence from given item
OFCondition FGUSImageDescription::read(DcmItem& item)
{
    clearData();

    DcmItem* seqItem   = NULL;
    OFCondition result = getItemFromFGSequence(item, DCM_USImageDescriptionSequence, 0, seqItem);
    if (result.bad())
        return result;

    DcmIODUtil::getAndCheckElementFromDataset(*seqItem, m_FrameType, "4", "1", "USImageDescriptionMacro");
    DcmIODUtil::getAndCheckElementFromDataset(*seqItem, m_VolumetricProperties, "1", "1", "USImageDescriptionMacro");
    DcmIODUtil::getAndCheckElementFromDataset(
        *seqItem, m_VolumeBasedCalculationTechnique, "1", "1", "USImageDescriptionMacro");
    return result;
}

/// Writes single Frame Content Sequence into given item
OFCondition FGUSImageDescription::write(DcmItem& item)
{
    DcmItem* seqItem   = NULL;
    OFCondition result = createNewFGSequence(item, DCM_USImageDescriptionSequence, 0, seqItem);
    if (result.bad())
        return result;

    // --- write frame content macro attributes ---
    DcmIODUtil::copyElementToDataset(result, *seqItem, m_FrameType, "4", "1", "USImageDescriptionMacro");
    DcmIODUtil::copyElementToDataset(result, *seqItem, m_VolumetricProperties, "1", "1", "USImageDescriptionMacro");
    DcmIODUtil::copyElementToDataset(
        result, *seqItem, m_VolumeBasedCalculationTechnique, "1", "1", "USImageDescriptionMacro");

    return result;
}

int FGUSImageDescription::compare(const FGBase& rhs) const
{
    int result = FGBase::compare(rhs);
    if (result != 0)
        return result;

    const FGUSImageDescription* myRhs = OFstatic_cast(const FGUSImageDescription*, &rhs);
    if (!myRhs)
        return -1;

    // Compare all elements
    result = m_FrameType.compare(myRhs->m_FrameType);
    if (result == 0)
        result = m_VolumetricProperties.compare(myRhs->m_VolumetricProperties);
    if (result == 0)
        result = m_VolumeBasedCalculationTechnique.compare(myRhs->m_VolumeBasedCalculationTechnique);

    return result;
}