package net.sourceforge.fenixedu.domain.accessControl;

import java.util.Collections;
import java.util.Set;

import net.sourceforge.fenixedu.domain.Person;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.Argument;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.GroupBuilder;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.operators.IdOperator;

public class PersistentGroup extends DomainBackedGroup<PersistentGroupMembers> {

    private static final long serialVersionUID = 156456365385985497L;

    public PersistentGroup(PersistentGroupMembers object) {
	super(object);
    }

    public PersistentGroupMembers getPersistentGroupMembers() {
	return getObject();
    }

    public String getName() {
	return getObject().getName();
    }

    @Override
    public Set<Person> getElements() {
	PersistentGroupMembers groupMembers = getObject();
	return Collections.unmodifiableSet(groupMembers.getPersonsSet());
    }

    @Override
    protected Argument[] getExpressionArguments() {
	return new Argument[] { new IdOperator(getObject()) };
    }

    @Override
    public boolean isMember(Person person) {
	if (person != null) {
	    PersistentGroupMembers groupMembers = getObject();
	    for (Person groupPerson : groupMembers.getPersons()) {
		if (person.equals(groupPerson)) {
		    return true;
		}
	    }
	}
	return false;
    }

    public static class Builder implements GroupBuilder {

	public Group build(Object[] arguments) {
	    return new PersistentGroup((PersistentGroupMembers) arguments[0]);
	}

	public int getMinArguments() {
	    return 1;
	}

	public int getMaxArguments() {
	    return 1;
	}
    }
}