import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import ca.uhn.hl7v2.HL7Exception;
import ca.uhn.hl7v2.conf.ProfileException;
import ca.uhn.hl7v2.conf.check.DefaultValidator;
import ca.uhn.hl7v2.conf.parser.ProfileParser;
import ca.uhn.hl7v2.conf.spec.RuntimeProfile;
import ca.uhn.hl7v2.model.Message;
//import ca.uhn.hl7v2.model.v231.message.*;
//import ca.uhn.hl7v2.model.v24.message.*;
//import ca.uhn.hl7v2.model.v251.message.*;
//import ca.uhn.hl7v2.model.v25.message.*;
//import ca.uhn.hl7v2.model.v26.message.*;
//import ca.uhn.hl7v2.model.v25.*;


import ca.uhn.hl7v2.parser.EncodingNotSupportedException;
import ca.uhn.hl7v2.parser.FastParser;
import ca.uhn.hl7v2.parser.PipeParser;
import ca.uhn.hl7v2.util.Terser;
import ca.uhn.hl7v2.validation.impl.NoValidation;
//import ca.uhn.hl7v2.model.v25.message.RSP_K21;



import ca.uhn.hl7v2.HL7Exception;
import ca.uhn.hl7v2.conf.ProfileException;
import ca.uhn.hl7v2.conf.parser.ProfileParser;
import ca.uhn.hl7v2.conf.spec.RuntimeProfile;
import ca.uhn.hl7v2.conf.store.CodeStore;
import ca.uhn.hl7v2.conf.store.ProfileCodeStore;
import ca.uhn.hl7v2.conf.store.ProfileStoreFactory;
import ca.uhn.hl7v2.model.Message;
import ca.uhn.hl7v2.parser.PipeParser;
import ca.uhn.hl7v2.validation.impl.NoValidation;
// those imports are required even if not explicitly used in this class!!! do not remove it
import ca.uhn.hl7v2.model.v231.message.*;
import ca.uhn.hl7v2.model.v24.message.*;
import ca.uhn.hl7v2.model.v251.message.*;
import ca.uhn.hl7v2.model.v25.message.*;
import ca.uhn.hl7v2.model.v26.message.*;
//import net.ihe.gazelle.iti.hl7v2.model.v25.message.QBP_Q21;
//import net.ihe.gazelle.iti.hl7v2.model.v25.message.RSP_K22;


import org.dom4j.io.SAXReader;
import org.dom4j.*;


public class Guess {


	public static String messageType(String message)
	{	
		try 
		{						
			Message sutMessage;
			
			PipeParser pipeParser = new PipeParser() ;
			pipeParser.setValidationContext(new NoValidation());

			sutMessage = pipeParser.parse(message);
			Terser t = new Terser(sutMessage);
			
			String messageType = "";
			
			messageType = t.get("/.MSH-9-1") + "^";
			messageType = messageType + t.get("/.MSH-9-2") + "^";
			messageType = messageType + t.get("/.MSH-9-3");				
			
			if (messageType.isEmpty() || messageType.length() < 11 || messageType.length() > 15)
			{
				return null;
			}

			return messageType;

		} catch (HL7Exception e) 
		{			
			e.printStackTrace();
			return null;
		} 
	}
	
	
	public static String lastChangeToGetTheMessageType(String message)
	{
		
      if (message.startsWith("MSH"))
      {
      	int a = 0;
      	int b = 0;
      	
      	a = message.indexOf("|");
      	
      	for (int i=0; i<7 ; i++)
      	{
      		a = message.indexOf("|", a+1);
      		
      		if (a == -1)
      			 return null;
      	}       	
      	
      	message = message.substring(a+1, message.indexOf("|", a+1));
      	
      	 return message;
      }
      else
    	  return null;
      
	}
	


}