/*
 * This program 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 2 of the
 * License, or (at your option) any later version.
 *
 * This program 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 PURPOUSE. See the GNU
 * General Public License for more details.
 *
 * You should have recieved a copy of the GNU General Public License
 * along with this program; if not write to the Free Software
 * Foundation, inc., 59 Temple Place, Suite 330, Boston MA 02111-1307
 * USA
 */

package run.trackers;

import run.*;

import run.elements.*;

import java.io.*;

import java.util.*;


/**
 * This is the contact force tracker     The tracker calculates the force
 * applied to one or several contact_triangle element The force is always in
 * the normal direction to the contact surface
 *
 * @author Jonas Forssell
 *
 * @see Tracker, TrackWriter, GidTrackWriter
 */
public class ContactForceTracker extends Tracker {
    private static int TYPE = 2;
    private Vector elementlist;
    private double[] resultlist;
    private boolean Elements_are_set;
    private boolean File_is_set;

    /**
     * Constructor
     */
    public ContactForceTracker() {
        elementlist = new Vector();
        resultlist = new double[1];
    }

    /**
     * Collects the data from the nodes
     */
    public void collectData()
        throws Error
    {
        // No data needs to be continuously collected so this is empty.
        // Data is only collected just before printing.
    }

    private void collectOwnData()
        throws Error
    {
        int i;
        Contact_Triangle tempelement;

        // Loop through the list of elements and collect new data from them
        for (i = 0; i < elementlist.size(); i++) {
            tempelement = (Contact_Triangle) elementlist.elementAt(i);

            // Collect new data from the element
            resultlist[i] = tempelement.getContactForce();
        }
    }

    /**
     * Calculate
     */
    public void calculate() {
        // No calculation needed 
    }

    private void calculateOwn() {
        int i;

        // 3. Summarize the element forces
        result = 0;

        for (i = 0; i < resultlist.length; i++) {
            result += resultlist[i];
        }
    }

    /**
     * This method checks the data in the indatafile and sets the corresponding
     * parameters for the Tracker. It is defined in the element due to the
     * fact of isolating the Tracker from the main program, thus making adding
     * a new Tracker a simpler issue. Creation date: (08/09/01 %T)
     *
     * @param param2 java.lang.String
     * @param param3 java.lang.String
     * @param param1 java.lang.String
     *
     * @exception java.text.ParseException The exception description.
     */
    public void parse_Fembic(
        Token[] param, int lineno, RplVector globalnodelist,
        RplVector globalelementlist
    )
        throws java.text.ParseException
    {
        int number_of_elements;
        int j;
        Jama.Matrix dummy = new Jama.Matrix(3, 1);
        int i = 0;

        while (i < param.length) {
            // The elements to scan are defined
            if (
                param[i].getw().toUpperCase().equals("ELEMENTS") &&
                param[i + 1].getw().toUpperCase().equals("=")
            ) {
                // Assume now that the element numbers are delivered in param3, with the format
                // [elementnr,elementnr,.....,elementnr]
                if (
                    ! param[i + 2].getw().toUpperCase().startsWith("[") ||
                    ! param[i + 2].getw().toUpperCase().endsWith("]")
                ) {
                    throw new java.text.ParseException(
                        "Error, element number definition should be [elementnr1,elementnr2,.....,elementnrN]",
                        lineno
                    );
                }

                // Ok, now find the numbers
                try {
                    number_of_elements = super.getNumberOfNodes(
                            param[i + 2].getw().toUpperCase()
                        );

                    if (number_of_elements < 1) {
                        throw new java.text.ParseException(
                            "Too few elements defined for this tracker. Minimum one required",
                            lineno
                        );
                    }

                    // Allocate space for the elements
                    resultlist = new double[number_of_elements];

                    // Now, add all the elements to the local elementslist.
                    for (j = 0; j < number_of_elements; j++) {
                        elementlist.add(
                            super.findElement(
                                super.getNodeNumber(
                                    j + 1, param[i + 2].getw().toUpperCase()
                                ), globalelementlist
                            )
                        );
                        resultlist[i] = 0;
                    }
                } catch (IllegalArgumentException e) {
                    System.out.println(e + "In line " + lineno);
                }

                i += 3;
                Elements_are_set = true;
            } else
            // The filename of the tracker is defined
            if (
                param[i].getw().toUpperCase().equals("FILENAME") &&
                param[i + 1].getw().toUpperCase().equals("=")
            ) {
                // Assume now that the material name is delivered in param3
                filename = new String(param[i + 2].getw().trim());
                i += 3;
                File_is_set = true;
            } else {
                // Neither elements nor filename is defined. Then the parameter is wrong.
                throw new java.text.ParseException(
                    "Unknown Tracker parameter ", lineno
                );
            }
        }
    }

	/**
     * This method checks the data in the indatafile in Nastran format and sets the corresponding
     * parameters for the Tracker. It is defined in the element due to the
     * fact of isolating the Tracker from the main program, thus making adding
     * a new Tracker a simpler issue. Creation date: (08/09/01 %T)
     *
     * @param param run.Token[] - An array containing the text to be parsed but
     *        split into tokens.
     * @param lineno int - The line number of the indata file being parsed
     * @param globalnodelist java.util.Vector - A vector containing all the
     *        nodes in the solution. This resides in the Smack object.
     * @param globalelementlist java.util.Vector - A vector containing all the
     *        elements in the solution. This resides in the Smack object.
     *
     * @exception java.text.ParseException The exception description.
     */
    public void parse_Nastran(
        Token[] param, int lineno, RplVector globalnodelist,
        RplVector globalelementlist
    )
        throws java.text.ParseException
    {
    }

	/**
     * This method checks the data in the indatafile in Gmsh format and sets the corresponding
     * parameters for the Tracker. It is defined in the element due to the
     * fact of isolating the Tracker from the main program, thus making adding
     * a new Tracker a simpler issue. Creation date: (08/09/01 %T)
     *
     * @param param run.Token[] - An array containing the text to be parsed but
     *        split into tokens.
     * @param lineno int - The line number of the indata file being parsed
     * @param globalnodelist java.util.Vector - A vector containing all the
     *        nodes in the solution. This resides in the Smack object.
     * @param globalelementlist java.util.Vector - A vector containing all the
     *        elements in the solution. This resides in the Smack object.
     *
     * @exception java.text.ParseException The exception description.
     */
    public void parse_Gmsh(
        Token[] param, int lineno, RplVector globalnodelist,
        RplVector globalelementlist
    )
        throws java.text.ParseException
    {
    }







    /**
     * This method checks that all mandatory parameters have been set
     */
    public void checkIndata()
        throws Error
    {
        if (! Elements_are_set) {
            throw new Error(
                "No element defined for this Contact force tracker: " + number
            );
        }

        if (! File_is_set) {
            throw new Error(
                "No Filename defined for this Contact force tracker: " +
                number
            );
        }
    }

    /**
     * This method is used to create the lines needed in the result file. The
     * method creates a string which is printed directly. However, due to the
     * fact that the line may be different depending on what is requested to
     * be printed and that the number of methods should be kept down, the
     * first parameter here is a control parameter. This parameter describes
     * what should be printed. The second parameter is the current time.
     * Creation date: (09/12/01 %T)
     *
     * @param ctrl int
     * @param currtime int
     */
    public void print_Gid(int ctrl, double currtime)
        throws IOException, Error
    {
        // Start by collecting data (needed here since it is not done continuously
        collectOwnData();

        // Calculate
        calculateOwn();

        // Now proceed
        String out;
        int i;

        switch (ctrl) {
        case RESULT_HEADER:

            /* This is the first time the tracker is asked to write something. Therefore, a
             * header is suitable to start with and the file should be created */
            try {
                bw = new BufferedWriter(new FileWriter(filename));

                // OK, file was openend allright. Now, proceed to write the header.
                out = new String(
                        "# Impact contact force tracker results from tracker number: " +
                        number + "\n"
                    );
                out += "# The following elements are included in the section:\n";
                out += "# \n# ";

                for (i = 0; i < elementlist.size(); i++) {
                    out += (((Contact_Triangle) elementlist.elementAt(i)).getNumber() +
                    ": ");
                }

                out += "\n# \n";
                out += "# X: time \t Y: force in direction: ";
                out += "\n#\n";
                bw.write(out);
                bw.flush();
                bw.close();
            } catch (IOException ioe) {
                System.out.println(
                    "Error in creating the ContactForceTracker file: " +
                    filename
                );
                throw ioe;
            }

            // If all goes well, we should just return.
            return;

        case RESULT:

            /* This is not the first time the tracker is asked to write something. Therefore, the
             * file must be opened for append. */
            try {
                bw = new BufferedWriter(new FileWriter(filename, true));

                // OK, file was openend allright. Now, proceed to write the results.
                bw.write(currtime + "\t" + result + "\n");
                bw.flush();
                bw.close();
            } catch (IOException ioe) {
                System.out.println(
                    "Error in writing results to the ContactForceTracker file: " +
                    filename
                );
                throw ioe;
            }

            // If everything went well, we will just return.
            return;

        default:
            throw new Error(
                "Unknown parameter for print_Gid in ContactForceTracker number: " +
                number
            );
        }
    }

    /**
     * Sets up any initial conditions needed. Creation date: (27/09/01 %T)
     */
    public void setInitialConditions() {
    }

    /**
     * Returns the tracker type number The type variable is defined in the
     * superclass Tracker
     */
    public int getType() {
        return TYPE;
    }
}

