package de.memtext.rights;

import java.io.Serializable;
import java.util.Collection;
import java.util.Iterator;
import java.util.TreeSet;

import de.memtext.util.EqualsUtil;

/**
 * A class for managing rights. In particular c
 */
public class Rights implements Serializable {

	private static final long serialVersionUID = 1;
	private boolean isAdmin = false;
	private boolean hasAllRights;
	private Collection keyColl = new TreeSet();

	public Rights() {

	}

	public Rights(boolean isAdmin, boolean hasAllRights) {
		setAdmin(isAdmin);
		setHasAllRights(hasAllRights);
	}

	public boolean isAdmin() {
		return isAdmin;
	}

	public void setAdmin(boolean isAdmin) {
		this.isAdmin = isAdmin;
	}

	public void addAllowed(RightsKeyEntry rke) {
		keyColl.add(rke);
	}

	public void clear() {
		keyColl.clear();
	}

	public boolean isEmpty() {
		return keyColl.isEmpty();
	}

	public boolean hasNoRights() {
		return !isAdmin && !hasAllRights && isEmpty();
	}

	public Iterator iterator() {
		return keyColl.iterator();
	}

	/**
	 * @return
	 */
	public boolean hasAllRights() {
		return hasAllRights;
	}

	/**
	 * @param b
	 */
	public void setHasAllRights(boolean b) {
		hasAllRights = b;
	}

	/**
	 * @param dn
	 * @return
	 */
	public boolean isAllowed(Object id) {
		boolean result = false;
		if (isAdmin || hasAllRights()) {
			result = true;
		} else {
			for (Iterator it = keyColl.iterator(); it.hasNext();) {
				RightsKeyEntry entry = (RightsKeyEntry) it.next();
				if (EqualsUtil.areEqual(entry.getKey(), id)) {
					result = true;
					break;
				}
			}
		}
		return result;

	}

	public boolean isSubordinatesAllowed(Object key) {
		boolean result = false;
		if (isAdmin || hasAllRights()) {
			result = true;
		} else {
			for (Iterator it = keyColl.iterator(); it.hasNext();) {
				RightsKeyEntry entry = (RightsKeyEntry) it.next();
				if (EqualsUtil.areEqual(entry.getKey(), key)) {
					result = entry.isSubordinatesAllowed();
					break;
				}
			}
		}
		return result;
	}

	public Object clone() throws CloneNotSupportedException {
		Rights cl = new Rights(isAdmin, hasAllRights);
		for (Iterator it = keyColl.iterator(); it.hasNext();) {
			RightsKeyEntry key = (RightsKeyEntry) it.next();
			cl.keyColl.add(key.clone());
		}
		return cl;
	}

	public String toString() {
		StringBuffer result = new StringBuffer("Rechte: ");
		for (Iterator it = keyColl.iterator(); it.hasNext();) {
			RightsKeyEntry entry = (RightsKeyEntry) it.next();
			result.append(entry.toString() + ",");
		}
		de.memtext.util.StringUtils.removeLastChar(result);
		return result.toString();
	}
}

// Created on 07.09.2004 at 11:10:06