/*

 *   SONEWS News Server

 *   see AUTHORS for the list of contributors

 *

 *   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 3 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 PURPOSE.  See the

 *   GNU General Public License for more details.

 *

 *   You should have received a copy of the GNU General Public License

 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

package org.sonews.util;

import java.util.HashMap;

import java.util.Map;

/**

 * Class that allows simple String template handling.

 * @author Christian Lins

 * @since sonews/0.5.0

 */

public class StringTemplate 

{

  private String              str               = null;

  private String              templateDelimiter = "%";

  private Map<String, String> templateValues    = new HashMap<String, String>();

  public StringTemplate(String str, final String templateDelimiter)

  {

    if(str == null || templateDelimiter == null)

    {

      throw new IllegalArgumentException("null arguments not allowed");

    }

    this.str               = str;

    this.templateDelimiter = templateDelimiter;

  }

  public StringTemplate(String str)

  {

    this(str, "%");

  }

  public StringTemplate set(String template, String value)

  {

    if(template == null || value == null)

    {

      throw new IllegalArgumentException("null arguments not allowed");

    }

    this.templateValues.put(template, value);

    return this;

  }

  public StringTemplate set(String template, long value)

  {

    return set(template, Long.toString(value));

  }

  public StringTemplate set(String template, double value)

  {

    return set(template, Double.toString(value));

  }

  public StringTemplate set(String template, Object obj)

  {

    if(template == null || obj == null)

    {

      throw new IllegalArgumentException("null arguments not allowed");

    }

    return set(template, obj.toString());

  }

  @Override

  public String toString()

  {

    String ret = str;

    for(String key : this.templateValues.keySet())

    {

      String value = this.templateValues.get(key);

      ret = ret.replace(templateDelimiter + key, value);

    }

    return ret;

  }

}