/*******************************************************************************
 *  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.dicommodel.modules;




import cdac.medinfo.sdk.dcm30_04.baselibs.AcquisitionContextSequence;
import cdac.medinfo.sdk.dcm30_04.baselibs.AcquisitionContextSequenceItem;
import cdac.medinfo.sdk.dcm30_04.baselibs.DicomV3Factory;
import cdac.medinfo.sdk.dcm30_04.baselibs.Tag;
import cdac.medinfo.sdk.dcm30_04.commoninterface.IDataSet;
import cdac.medinfo.sdk.dcm30_04.commoninterface.IItem;
import cdac.medinfo.sdk.dcm30_04.commoninterface.ITag;

import cdac.medinfo.sdk.dcm30_04.exceptions.InvalidModuleException;
import cdac.medinfo.sdk.dcm30_04.exceptions.ItemLimitException;
import cdac.medinfo.sdk.dcm30_04.exceptions.MandatoryMissingException;
import cdac.medinfo.sdk.dcm30_04.utils.DicomConfig;
import cdac.medinfo.sdk.dcm30_04.utils.DicomConstants;
import cdac.medinfo.sdk.dcm30_04.utils.DicomLogger;
import cdac.medinfo.sdk.dcm30_04.utils.ICollectionIterator;
import cdac.medinfo.sdk.dcm30_04.utils.ISingleCollection;
import cdac.medinfo.sdk.dcm30_04.utils.SingleCollection;

// TODO: Auto-generated Javadoc
/**
 \* This module specifies Attributes for description of the conditions present during data  acquisition.
 */
public class AcquisitionContextModule extends Module  
{


	/**
	 * The obj single collection.
	 */
	public static ISingleCollection<ITag> objSingleCollection = null;

	/**
	 * Instantiates a new acquisition context module.
	 * 
	 * @param objIDataSet the obj i data set
	 */
	public AcquisitionContextModule(IDataSet objIDataSet)
	{
		super(objIDataSet);
	}

	static
	{
		objSingleCollection = new SingleCollection<ITag>();
		objSingleCollection.add(new Tag(0x0040,0x0555));
		objSingleCollection.add(new Tag(0x0040,0x0556));
	}

	/**
	 * This method validates each Attribute in the Module according to the Type
	 * of the Attribute.Attributes are of 5 types.
	 * Type 1,Type 2 are Mandatory:
	 * Mandatory Attributes have to present in the Module.
	 * Type 1C,2C are Conditional:
	 * Conditional Attributes' presence depend on a condition.
	 * If the condition is satisfied the Attribute has to be present.
	 * Type 3 are Optional
	 * Optional Attributes can be added as and when required.
	 * 
	 * @return boolean - returns validation status as success or failure
	 * 
	 * @throws InvalidModuleException - If validation of Module fails
	 */
	public  boolean validateModule() throws InvalidModuleException
	{

		try
		{
			/*
			 * Validation Rules for Mandatory Elements
			 */
			if(!isPresent(0x0040,0x0555))
				throw new MandatoryMissingException("0040,0555");
			ICollectionIterator<IItem> objAcquisitionContextSequenceIterator = getAcquisitionContextSequence().iterator();
			AcquisitionContextSequenceItem objAcquisitionContextSequenceItem = null;
			while(objAcquisitionContextSequenceIterator.hasNext())
			{
				objAcquisitionContextSequenceItem = (AcquisitionContextSequenceItem)objAcquisitionContextSequenceIterator.next();
				int iNoOfConceptCodeSequenceItems = objAcquisitionContextSequenceItem.getConceptCodeSequence().noOfItems();
				if(iNoOfConceptCodeSequenceItems > 1)
					throw new ItemLimitException("Sequence 0040,A168 shall contain single item for this module");
				int iNoOfConceptNameCodeSequenceItems = objAcquisitionContextSequenceItem.getConceptNameCodeSequence().noOfItems();
				if(iNoOfConceptNameCodeSequenceItems > 1)
					throw new ItemLimitException("Sequence 0040,A043 shall contain single item for this module");
			}

		}
		catch(MandatoryMissingException mme)
		{
			if(DicomConfig.createInstance().isLoggingOn())
				DicomLogger.getLogger().log(mme.getMessage());

			
				throw new InvalidModuleException(this.getClass().getSimpleName(),mme);

		}
		catch(ItemLimitException ile)
		{

			if(DicomConfig.createInstance().isLoggingOn())
				DicomLogger.getLogger().log(ile.getMessage());

			
				throw new InvalidModuleException(this.getClass().getSimpleName(),ile);

		}
		return true;
	}

	/**
	 * Sets Free-text description of the image-acquisition context.
	 * 
	 * @param strAcquisitionContextDescription String value of Acquisition Context Description.
	 */
	public void setAcquisitionContextDescription(String strAcquisitionContextDescription)
	{
		/*Accept Acquisition Context Description in String format of type ST.
		 * 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 DataSet
		 */
		addDataElement(0x0040, 0x0556, DicomConstants.DCM_DT_ST, strAcquisitionContextDescription);
	}

	/**
	 * Retrieves pre-initialized object of Acquisition Context Sequence.If the module contains the sequence object
	 * it returns the same otherwise it creates the sequence adds to the module with proper initialization
	 * and then returns the object of sequence
	 * 
	 * @return AcquisitionContextSequence - instance of Acquisition Context Sequence.
	 */
	public AcquisitionContextSequence getAcquisitionContextSequence()
	{
		AcquisitionContextSequence objAcquisitionContextSequence = (AcquisitionContextSequence)getDicomValue(0x0040, 0x0555);
		if(objAcquisitionContextSequence == null)
		{
			/*
			 * If the sequence object is not present in the DataSet, a new sequence object is created and
			 * the TransferSyntax and DictionaryReader is set into it as it is set in the Module. This ensures that 
			 * the DataElements getting added in the DataSet follow the same TransferSyntax and use the same
			 * DictionaryReader object as that of the module.
			 */
			DicomV3Factory objDicomV3Factory = DicomV3Factory.createInstance();
			objAcquisitionContextSequence = (AcquisitionContextSequence)objDicomV3Factory.createSequence(0x0040, 0x0555, objITransferSyntax, objIDictionaryReader);
			
			// This will add Data Element of SQ to the DataSet.
			addDataElement(0x0040, 0x0555, DicomConstants.DCM_DT_SQ, objAcquisitionContextSequence.getValue());
		}
		return objAcquisitionContextSequence;
	}

	/**
	 * Retrieves Free-text description of the image-acquisition context.
	 * 
	 * @return String - String value of Acquisition Context Description.
	 */
	public String getAcquisitionContextDescription()
	{
		Object objValue = getValue(0x0040,0x0556);
		if(objValue != null)
			return objValue.toString();
		return null;
	}

	/**
	 * This method returns the vector of keys representing the DataElements that belong to this module.
	 * 
	 * @return vector of Tags - returns the vector containing the collection of tags
	 */
	public ISingleCollection<ITag> getVectorOfKeys()
	{
		return objSingleCollection;
	}
}
