/*
 * This file is part of rasdaman community.
 *
 * Rasdaman community is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Rasdaman community is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
 rasdaman GmbH.
 *
 * For more information please see <http://www.rasdaman.org>
 * or contact Peter Baumann via <baumann@rasdaman.com>.
 */
package petascope.wcps.server.core;

import petascope.wcps.server.exceptions.WCPSException;
import org.w3c.dom.*;

public class ComplexConstant implements IRasNode {

    private String re, im;

    public ComplexConstant(String str) throws WCPSException {
        boolean ok = true;
        // We only accept the following String representation of a complex number: {re,im}
        if (str.startsWith("{") && str.endsWith("}")) {
            str = str.substring(1, str.length() - 2);
            if (str.indexOf(",") != -1 && str.lastIndexOf(",") != str.indexOf(",")) {
                int comma = str.indexOf(",");
                re = str.substring(0, comma - 1);
                im = str.substring(comma + 1, str.length() - comma - 1);
            } else {
                ok = false;
            }
        } else {
            ok = false;
        }
        if (ok == false) {
            throw new WCPSException("Could not parse Complex Constant !");
        }

        // parse the real part
        try {
            Integer real = Integer.parseInt(re);
        } catch (NumberFormatException e) {
            try {
                Float real = Float.parseFloat(re);
            } catch (NumberFormatException e2) {
                throw new WCPSException("Could not parse float or integer "
                        + "number for real part of complex number:" + re);
            }
        }
        // parse the imaginary part
        try {
            Integer imag = Integer.parseInt(im);
        } catch (NumberFormatException e) {
            try {
                Float imag = Float.parseFloat(im);
            } catch (NumberFormatException e2) {
                throw new WCPSException("Could not parse float or integer "
                        + "number for imaginary part of complex number" + im);
            }
        }
    }

    public ComplexConstant(Node node, XmlQuery xq) throws WCPSException {
        System.err.println("Parsing complex constant: " + node.getNodeName());

        while ((node != null) && node.getNodeName().equals("#text")) {
            node = node.getNextSibling();
        }

        while (node != null) {
            String name = node.getNodeName();
            if (name.equals("re")) {
                re = node.getNodeValue();
            } else if (name.equals("im")) {
                im = node.getNodeValue();
            } else {
                throw new WCPSException("Unknown node while processing complex constant: " + name);
            }

            node = node.getNextSibling();
        }

        // parse the real part
        try {
            Integer real = Integer.parseInt(re);
        } catch (NumberFormatException e) {
            try {
                Float real = Float.parseFloat(re);
            } catch (NumberFormatException e2) {
                throw new WCPSException("Could not parse float or integer "
                        + "number for real part of complex number:" + re);
            }
        }
        // parse the imaginary part
        try {
            Integer imag = Integer.parseInt(im);
        } catch (NumberFormatException e) {
            try {
                Float imag = Float.parseFloat(im);
            } catch (NumberFormatException e2) {
                throw new WCPSException("Could not parse float or integer "
                        + "number for imaginary part of complex number" + im);
            }
        }
    }

    public String toRasQL() {
        return "complex ( " + re + ", " + im + " ) ";
    }
}