/* Rajarshi Guha <rajarshi@presidency.com>
 * 14/12/2004
 *
 * Updated 07/03/2006 to work with the latest version of the QSAR package
 * Updated 01/03/2006 to be in sync with the latest CVS
 *
 * 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.io.*;
import java.util.Vector;
import java.util.Iterator;

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

    // Initialize the Axis setup
    public CDKdescClient(String host) {
        String endpoint = "http://localhost:8080/axis/services/CDKdesc";
	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("CDKClient (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 String getDescriptors(String[] args) {
        try {
            call.removeAllParameters();
            call.setOperationName( "getDescriptors" );
            call.addParameter( "moleculeString", XMLType.XSD_STRING, ParameterMode.IN);
            call.addParameter( "classes", XMLType.XSD_STRING, ParameterMode.IN);
            call.setReturnType( XMLType.XSD_STRING );

            String ret = (String)call.invoke( new Object[] { args[0],args[1] });
            System.out.println("CDKdescClient got result : ");
            System.out.println(ret);
            return ret;
        } catch (Throwable t) {
            handleError("CDKdescClient (getDescriptors) had an Exception.",t);
            return null;
        }
    }
    public static String readFile(String inFileName) throws IOException {
        FileReader r = null;
        try {
            r = new FileReader(new File(inFileName));
            StringBuffer sb = new StringBuffer();
            char[] b = new char[8192];
            int n;
            while ((n = r.read(b)) > 0) { sb.append(b, 0, n); }
            return sb.toString();
        } finally {
            try {
                r.close();
            } catch (IOException e1) {
                e1.printStackTrace();
            }
        }
    }    

    // 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 < 1) {
	    System.out.println("Usage: java CDKdescClient SDFile [class1,class2,...] [host]\n");
	    System.out.println("SDFile is a molecular structure.\n");
	    System.out.println("class1,class2 etc are possible descriptor classes. The available");
	    System.out.println("values are: geometrical, topological, constitutional, electronic");
	    System.out.println("            hybrid\n"+
			       "If no value is specifed that all available descriptors will be\n"+
			       "calculated");
	    System.out.println("host can be a valid AXIS server. By default the host is set to");
	    System.out.println("http://localhost:8080/axis/services/CDKdesc\n");
	    System.exit(0);
	}

        try {
            String testcml = readFile(args[0]);
	    String types = "all";
	    String host = null;
	    if (args.length >= 2) {
		types = args[1];
	    }
	    if (args.length == 3) {
		host = args[2];
	    }
            CDKdescClient sr = new CDKdescClient(host);
            String[] wsargs = {testcml,types};
            sr.getDescriptors(wsargs);
        } catch (Exception e) {
            System.out.println(e.toString());
        }
    }
}