package net.ihe.swfid.tools;

import java.io.IOException;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;

import org.apache.commons.io.HexDump;
import org.apache.xerces.impl.dv.util.HexBin;
import org.dcm4che2.data.DicomObject;
import org.dcm4che2.data.Tag;
import org.dcm4che2.net.ConfigurationException;
import org.dcm4che2.tool.dcmqr.DcmQR;
import org.jfree.util.Log;

import com.sun.xml.fastinfoset.algorithm.HexadecimalEncodingAlgorithm;

/**
 * 
 * @author abderrazek boufahja
 *
 */
public class DcmQRSimulator {
	
	public DcmQRSimulator(){
	}
	
	/**
	 * @param host       : HostName to connect to the service
	 * @param port       : System port  
	 * @param aet        : Called AET
	 * @param queryValue : Search criteria PatientName, the begin of the name with character * at the end 
	 * @return return the list of result
	 * @throws IOException
	 * @throws ConfigurationException
	 * @throws InterruptedException
	 */
	public List<DicomObject> getListDicomObjectFromPatientName(String host,
																int port,
																String aet,
																String queryValue) 
																throws IOException, ConfigurationException, InterruptedException{
		return this.getListDicomObjectFromTag(host, port, aet, "PatientName", queryValue);
	}
	
	/**
	 * @param host : HostName to connect to the service
	 * @param port : port of the service 
	 * @param aet  : Called AET
	 * @param mapOfQuery List of query
	 * @return
	 * @throws IOException
	 * @throws ConfigurationException
	 * @throws InterruptedException
	 * @throws IllegalArgumentException
	 * @throws IllegalAccessException
	 */
	public List<DicomObject> getListDicomObjectFromTags(String host,
					int port,
					String aet, 
					HashMap<String ,String > mapOfQuery) 
					throws IOException, ConfigurationException, InterruptedException, IllegalArgumentException, IllegalAccessException{
		if (
			(host == null) ||
			(aet == null)
		){
			return null;
		}
		DcmQR pQR = initializeQuery(host,port, aet);
		if (mapOfQuery != null){
			for (String querr:mapOfQuery.keySet()){
				Field[] lf = Tag.class.getFields();
				boolean isInt = false;
				boolean isTagged = false;
				Integer t = null;
				try{
					t = Integer.parseInt(querr,16);
					isInt = true;
				}
				catch(NumberFormatException e){
					isInt = false;
				}
				
				for (Field f:lf){
					if (f.getName().equals(querr)){
						pQR.addMatchingKey(Tag.toTagPath(querr), mapOfQuery.get(querr));
						isTagged = true;
						break;
					}
					if (isInt){
						int sint = f.getInt(null);
						if (sint == t.intValue()){
							pQR.addMatchingKey(Tag.toTagPath(f.getName()), mapOfQuery.get(querr));
							isTagged = true;
							break;
						}
					} 
				}
				if (isTagged == false) return new ArrayList<DicomObject>();
				
			}
		}
		pQR.start();
		pQR.open();
		List<DicomObject> listPQR = pQR.query();
		pQR.close();
		return listPQR;
	}
	
	/**
	 * @param host       : HostName to connect to the service
	 * @param port       : port of the service
	 * @param aet        : Called AET
	 * @param query      : query
	 * @param queryValue : Search criteria PatientName, the begin of the name with character * at the end 
	 * @return
	 * @throws IOException
	 * @throws ConfigurationException
	 * @throws InterruptedException
	 */
	public List<DicomObject> getListDicomObjectFromTag(String host,
														int port,
														String aet, 
														String query, 
														String queryValue) 
														throws IOException, ConfigurationException, InterruptedException{
		if (
				(host == null) ||
				(aet == null)  ||
				(queryValue == null) ||
				(query == null)
			){
			return null;
		}
		DcmQR pQR = initializeQuery(host,port, aet);
		pQR.addMatchingKey(Tag.toTagPath(query), queryValue);
		pQR.start();
		pQR.open();
		List<DicomObject> listPQR = pQR.query();
		pQR.close();
		return listPQR;
	}
	
	
	/**
	 * @param host :  HostName to connect to the service
	 * @param port :  port of the service
	 * @param aet  : Called AET
	 * @param queryValue : Search criteria PatientName, the begin of the name with character * at the end 
	 * @return DcmQR - Query sent to DCM4chee
	 */
	private DcmQR initializeQuery(String host,int port,String aet) {
		
		DcmQR pQR = new DcmQR(host);
		
		pQR.setRemoteHost(host);
		pQR.setRemotePort(port);
		pQR.setCalledAET(aet,true);
		pQR.setCalling(aet);
		pQR.setCGet(false);
		pQR.setPackPDV(true);
		pQR.setTcpNoDelay(true);
		pQR.setMaxOpsInvoked(1);
		pQR.setMaxOpsPerformed(0);
		pQR.configureTransferCapability(false);
		
		pQR.setQueryLevel(DcmQR.QueryRetrieveLevel.PATIENT);
		return pQR;
	}
	
	/**
	 * @param ldo : List of DicomObject
	 * @return
	 */
	public static String formatListDicomObject(List<DicomObject> ldo){
		String res = new String();
		res = res + "## Number of Patients : " ;
		if (ldo != null){
			res = res + ldo.size() + "\n\n";
		}
		for (DicomObject dobj:ldo){
			res = res + dobj.toString() + "\n\n";
		}
		return res;
	}
	
	/**
	 * @return
	 */
	public List<String> getListTagName() {
		List<String> listTag = new ArrayList<String>();
		Field[] lf = Tag.class.getFields();
		for (Field f: lf){
			listTag.add(f.getName());
		}
		Collections.sort(listTag);
		return listTag;
	}
	
	/**
	 * @return
	 */
	public List<String> getListTagValue() {
		List<String> listTag = new ArrayList<String>();
		Field[] lf = Tag.class.getFields();
		for (Field f: lf){
			try {
				listTag.add((String) f.get(null));
			} catch (IllegalArgumentException e) {
				e.printStackTrace();
			} catch (IllegalAccessException e) {
				e.printStackTrace();
			}
		}
		Collections.sort(listTag);
		return listTag;
	}
	
	/**
	 * @param hexString
	 * @return
	 */
	public static String getNameOfTag(String hexString){
		Integer t = null;
		try{
			t = Integer.parseInt(hexString,16);
			Field[] lf = Tag.class.getFields();
			for (Field f:lf){
				int sint = f.getInt(null);
				if (sint == t.intValue()){
					return f.getName();
				}
			}
		}
		catch(Exception e){
			return null;
		}
		return null;
	}
	

}