package org.varienaja.comments;
   
   import java.io.Serializable;
   import java.util.Date;
   import java.util.LinkedList;
   import java.util.List;
   
   /**
    * Class representing a Comment
   * @author Varienaja
   */
  public class Comment implements Serializable, Comparable<Comment> {
  	private static final long serialVersionUID = 20080224172312L;
  	
  	private String _title;
  	private String _source;
  	private List<CommentElement> _elements;
  	private Date _date;
  	
  	public Comment(String source, String title, Date date) {
  		_source = source==null ? "" : source;
  		_title = title==null ? "" : title;
  		_date = date==null ? new Date() : date;
  		_elements = new LinkedList<CommentElement>();
  	}
  	
  	public String getTitle() {
  		return _title;
  	}
  	
  	public void setTitle(String title) {
  		_title = title;
  	}
  	
  	public String getSource() {
  		return _source;
  	}
  	
  	public List<CommentElement> getElements() {
  		return _elements;
  	}
  	
  	public void addElement(CommentElement element) {
  		_elements.add(element);
  	}
  	
  	/**
  	 * Splits an existing CommentElement into several others.
  	 * @param src The source element.
  	 * @param dest The destination elements.
  	 */
  	public void splitElement(CommentElement src, List<CommentElement> dest) {
  		int index = _elements.indexOf(src);
  		if (index!=-1) {
  			_elements.remove(index);
  			for (CommentElement element : dest) {
  				_elements.add(index++, element);
  			}
  		}
  	}
  	
  	public void setDate(Date date) {
  		_date = date;
  	}
  	
  	public Date getDate() {
  		return _date;
  	}
  	
  	public boolean equals(Object o) {
  		if (!(o instanceof Comment)) return false;
  		
  		Comment other = (Comment) o;
  		return _title.equals(other._title) &&
  			_source.equals(other._source) &&
  			_date.equals(other._date);
  	}
  	
  	public int hashCode() {
  		return _date.hashCode()*_source.hashCode()*_title.hashCode();
  	}
  
  	/**
  	 * Sort by date descending
  	 */
  	public int compareTo(Comment other) {
  		return -_date.compareTo(other._date);
  	}
  	
  	/**
  	 * Returns the title and contents of the review.
  	 */
  	@Override
  	public String toString() {
  		StringBuilder sb = new StringBuilder();
  		sb.append(getTitle());
  		sb.append(' ');
  		for (CommentElement element : getElements()) {
  			sb.append(element.getText());
 			sb.append(' ');
 		}
 		return sb.toString();
 	}
 	
 
 }