/* Rajarshi Guha <rajarshi@presidency.com>
 * 14/12/2004
 *
 * Updated 01/03/2006 - Synced with latest CDK. Added usage message
 *
 * Based on code written by Marty Hall
 */

import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import org.apache.axis.encoding.XMLType;
import org.apache.axis.AxisFault;
import javax.xml.namespace.QName;
import javax.xml.rpc.ParameterMode;

import java.util.Vector;
import java.util.Iterator;

public class CDKsimClient 
{
    private Call call;
    private QName qn;
    private boolean requestError; 
    private String requestErrorMessage; 

    // Initialize the Axis setup
    public CDKsimClient(String host) {

        String endpoint = "http://localhost:8080/axis/services/CDKsim";
	if (host != null) {
	    endpoint = host;
	}
        try {
            Service  service = new Service();
            call = (Call) service.createCall();
            call.setTargetEndpointAddress( new java.net.URL(endpoint) );
        } catch (Throwable t) {
            handleError("CDKsimClient (constructor) had an Exception.",t);
        }
    }
  	
    // Return true in an error was found 
    public boolean error() {
        return requestError;
    }  

    // Return the error message 
    public String getErrorText() {
        String msg;
        if (requestError) {
            msg = requestErrorMessage;
        } else {
            msg = "";
        }  
        return msg;
    }

    public double getSim(String target, String query, int l, int d) {
        try {
            call.removeAllParameters();
            call.setOperationName( "getSim" );
            call.addParameter( "target", XMLType.XSD_STRING, ParameterMode.IN);
            call.addParameter( "query",  XMLType.XSD_STRING, ParameterMode.IN);
            call.addParameter( "length", XMLType.XSD_INTEGER, ParameterMode.IN);
            call.addParameter( "depth",  XMLType.XSD_INTEGER, ParameterMode.IN);
            call.setReturnType( XMLType.XSD_DOUBLE );

            Double ret = (Double)call.invoke( new Object[] { target, query, new Integer(l), new Integer(d) });
            if (ret == null) {
                System.out.println("Error in SOAP call");
            }
            double retval = ret.doubleValue();
            System.out.println("CDKsimClient got result : ");
            System.out.println(retval);
            return retval;
        } catch (Throwable t) {
            handleError("CDKsimClient (getFPString) had an Exception.",t);
            return (-1.0);
        }
    }
 

    // Set error flags, print stack trace
    public void handleError(String text, Throwable t) { 
        requestError = true;
        requestErrorMessage = t.toString();
        System.out.println(text);
        System.out.println(t);
        t.printStackTrace();
        return;
    }  

    // Test program
    public static void main(String [] args) {
        if (args.length < 2) {
            System.out.println("Usage: java CDKsimClient target query [host]");
	    System.out.println("\ntarget and query should be valid SMILES strings");
	    System.out.println("If host is not specified then http://localhost:8080/axis/services/CDKws is used\n");
            System.exit(0);
        }
	String host = null;
	if (args.length == 3) {
	    host = args[2];
	}
        CDKsimClient sr = new CDKsimClient(host);
        sr.getSim(args[0], args[1], 1024, 6);
    }
}