/*******************************************************************************
 *  Copyright 2017-2018 Centre for Development of Advanced Computing(C-DAC), Pune
 *  
 * Licensed 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
 *  
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package cdac.medinfo.sdk.dcm30_04.baselibs;

import cdac.medinfo.sdk.dcm30_04.commoninterface.IDataElement;
import cdac.medinfo.sdk.dcm30_04.commoninterface.IDictionaryReader;
import cdac.medinfo.sdk.dcm30_04.commoninterface.ITransferSyntax;
import cdac.medinfo.sdk.dcm30_04.enums.EnumDeidentificationAction;
import cdac.medinfo.sdk.dcm30_04.exceptions.InvalidItemException;
import cdac.medinfo.sdk.dcm30_04.exceptions.MandatoryMissingException;
import cdac.medinfo.sdk.dcm30_04.exceptions.ValidationException;
import cdac.medinfo.sdk.dcm30_04.utils.DicomConfig;
import cdac.medinfo.sdk.dcm30_04.utils.DicomConstants;
import cdac.medinfo.sdk.dcm30_04.utils.DicomLogger;

/**
* This item class contains the methods to set, get and validate the attribute present in Deidentification Action Sequence .
 */
public class DeidentificationActionSequenceItem extends Item
{


	private static final long serialVersionUID = 1L;

	/**
	 * This constructor creates the item with default TransferSyntax 
	 */
	DeidentificationActionSequenceItem()
	{
		super();
	}

	/*
	 * This constructor calls the respective superclass constructor
	 * This constructor should throw exception if null TS is tried to be set
	 */
	/**
	 * This constructor creates the item with specified TransferSyntax 
	 * and default DictionaryReader
	 * @param objITransferSyntax specifies the DICOM Standard defined TransfeSyntax
	 */
	DeidentificationActionSequenceItem(ITransferSyntax objITransferSyntax)
	{
		super(objITransferSyntax);
	}

	/**
	 * This constructor creates DeidentificationActionSequenceItem with specified TransferSyntax and
	 * specified DictionaryReader.
	 * @param objTransferSyntax specifies the DICOM Standard defined TransfeSyntax.
	 * @param objDictionaryReader specifies the DICOM Dictionary reader to be used.
	 */
	DeidentificationActionSequenceItem(ITransferSyntax objTransferSyntax, IDictionaryReader objDictionaryReader)
	{
		super(objTransferSyntax,objDictionaryReader);
	}

	/*
	 * (non-Javadoc) This method validates the contents of the Item
	 * @see cdac.medinfo.sdk.dcm30_04.commoninterface.IItem#validate()
	 */
	/**
	 * Validates all the attributes in DeidentificationActionSequenceItem that are present in the DataSet
	 * @return boolean - Success -true, Failure - false
	 * @throws InvalidItemException throws InvalidItemException If Mandatory or Conditional element fails.
	 */
	public boolean validateForModule()  throws InvalidItemException
	{
		try{
			if(!contains(0x0008,0x0306))
				throw new MandatoryMissingException("0008,0306");
			if(!contains(0x0008,0x0307))
				throw new MandatoryMissingException("0008,0307");
		}
		catch(MandatoryMissingException me)
		{
			if(DicomConfig.createInstance().isLoggingOn())
			{
				DicomLogger.getLogger().log(me.getMessage());
			}
			throw new ValidationException(this.getClass().getSimpleName(),me);
		}
		return true;
	}
	
	/**
	 * Sets Identifying Private Elements.
	 * @param arrShIdentifyingPrivateElements
	 */
	public void setIdentifyingPrivateElements(short[] arrShIdentifyingPrivateElements)
	{
		/*Accept the Identifying Private Elements in Array of short format of type US.
		 * Read the Transfer Syntax and check if ImplicitDE or ExplicitDE to create
		 * 
		 * Set the iGroupNumber and iElementNumber to ImplicitDE object 
		 * Set the iVRType
		 * Set length from the element
		 * Add this element to the Data Set
		 */
		IDataElement objIDataElement = null;
		if(objITransferSyntax.getVRTransferSyntax() == DicomConstants.DCM_VR_IMPLICIT)	
			objIDataElement = new ImplicitDE(0x0008, 0x0306, arrShIdentifyingPrivateElements,getDictionaryReader());
		else
			objIDataElement = new ExplicitDE(0x0008, 0x0306,DicomConstants.DCM_DT_US, arrShIdentifyingPrivateElements);

		addDataElement(objIDataElement);
	}

	/**
	 * Retrieves Identifying Private Elements.
	 * @return short Array - Identifying Private Elements.
	 */
	public short[] getIdentifyingPrivateElements()
	{
		Object objValue = getValue(0x0008, 0x0306);
		if(objValue != null)
			return (short[])objValue;
		return null;
	}
	
	/**
	 * Sets Deidentification Action.
	 * Defined Terms:
	 * 1) D - replace with a non-zero length value that may be a dummy value and consistent with the VR
	 * 2) Z - replace with a zero length value, or a non-zero length value that maybe a dummy value and consistent with the VR
	 * 3) X - remove
	 * 4) U - replace with a non-zero length UID that is internally consistent with in a set of Instance
	 * @param enumDeidentificationAction enum value of Deidentification Action.
	 */
	public void setDeidentificationAction(EnumDeidentificationAction enumDeidentificationAction)
	{
		/* Accept the Deidentification Action in String format of type CS.
		 * Read the Transfer Syntax and check if ImplicitDE or ExplicitDE to create
		 * Set the iGroupNumber and iElementNumber to ImplicitDE object 
		 * Set the iVRType
		 * Set length from the element
		 * Add this element to the Data Set
		 */
		IDataElement objIDataElement = null;
		if(objITransferSyntax.getVRTransferSyntax() == DicomConstants.DCM_VR_IMPLICIT)
			objIDataElement = new ImplicitDE(0x0008,0x0307, enumDeidentificationAction.getValue(),getDictionaryReader());
		else
			objIDataElement = new ExplicitDE(0x0008,0x0307,DicomConstants.DCM_DT_CS, enumDeidentificationAction.getValue());

		addDataElement(objIDataElement);


	}

	/**
	 * Return Deidentification Action. 
	 * @return String - value of Deidentification Action.
	 */
	public String getDeidentificationAction()
	{
		Object objValue = getValue(0x0008,0x0307);
		if(objValue != null)
			return objValue.toString();
		return null;
	}

	
}
