/*
 * $Id$
 * 
 * This file is part of the Object Modeling System (OMS),
 * 2007-2012, Olaf David and others, Colorado State University.
 *
 * OMS is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, version 2.1.
 *
 * OMS 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with OMS.  If not, see <http://www.gnu.org/licenses/lgpl.txt>.
 */
package ngmf.ui.mms;

import java.io.File;
import java.text.DateFormat;
import java.util.Date;
import java.util.StringTokenizer;

public class ParameterSetHistory {

  private String date;
  private String who;
  private String comment;
  private String source;
  private String what;
  private final Throwable tracer = new Throwable();
  private DateFormat df = DateFormat.getDateTimeInstance();


  public ParameterSetHistory(String hist_string) {
    StringTokenizer st = new StringTokenizer(hist_string);
    st.nextToken("\"");
    this.date = st.nextToken("\"");
    st.nextToken("\"");
    this.who = st.nextToken("\"");
    st.nextToken("\"");
    this.what = st.nextToken("\"");
    st.nextToken("\"");
    this.source = st.nextToken("\"");
    st.nextToken("\"");
    this.comment = st.nextToken("\"");
  }


  public ParameterSetHistory(String date, String who, String what, String source, String comment) {
    this.date = date;
    this.who = who;
    this.what = what;
    this.source = source;
    this.comment = comment;
  }


  public ParameterSetHistory(Object what, String comment) {
    this.comment = comment;
    this.date = df.format(new Date());
    this.who = System.getProperty("user.name");
    this.source = findCaller(2);

    if (what.getClass() == MmsParameter.class) {
      MmsParameter param = (MmsParameter) what;
      this.what = "parameter " + param.getName() + " changed";

    } else if (what.getClass() == MmsDimension.class) {
      MmsDimension dim = (MmsDimension) what;
      this.what = "dimension " + dim.getName() + " changed";

    } else if (what.getClass() == File.class) {
      File file = (File) what;
      this.what = "file renamed from " + file.getPath();

    } else {
      System.out.println("MmsParameterSetHistory unknown object type");
    }
  }


  private String findCaller(int depth) {
    if (depth < 0) {
      throw new IllegalArgumentException();
    }
    tracer.fillInStackTrace();
    return tracer.getStackTrace()[depth + 1].toString();
  }


  /**
   * Getter for property date.
   * @return Value of property date.
   */
  public String getDate() {
    return this.date;
  }


  /**
   * Getter for property who.
   * @return Value of property who.
   */
  public String getWho() {
    return this.who;
  }


  /**
   * Getter for property comment.
   * @return Value of property comment.
   */
  public String getComment() {
    return this.comment;
  }


  /**
   * Setter for property comment.
   */
  public void setComment(String comment) {
    this.comment = comment;
  }


  /**
   * Getter for property classMethod.
   * @return Value of property classMethod.
   */
  public String getSource() {
    return this.source;
  }


  /**
   * Getter for property what.
   * @return Value of property what.
   */
  public String getWhat() {
    return this.what;
  }


  public String toString() {
    return "<history date=\"" + date + "\" who=\"" + who + "\" what=\"" + what + "\" source=\"" + source + "\" comment=\"" + comment + "\"\\>";
  }
}