package net.sourceforge.fenixedu.domain.research;

import java.util.HashSet;
import java.util.Set;

import net.sourceforge.fenixedu.domain.Person;
import net.sourceforge.fenixedu.domain.RootDomainObject;
import net.sourceforge.fenixedu.domain.accessControl.Group;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.Argument;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.GroupBuilder;
import net.sourceforge.fenixedu.domain.organizationalStructure.Party;

public class AuthorGroup extends Group {

    @Override
    public boolean equals(final Object other) {
        boolean result = other != null;

        if (result) {
            result = this.getClass().equals(other.getClass());
        }

        return result;
    }

    @Override
    public int hashCode() {
        return getClass().hashCode();
    }

    public static class AuthorGroupBuilder implements GroupBuilder {
        @Override
        public Group build(Object[] arguments) {
            return new AuthorGroup();
        }

        @Override
        public int getMinArguments() {
            return 0;
        }

        @Override
        public int getMaxArguments() {
            return 0;
        }
    }

    @Override
    public Set<Person> getElements() {
        Set<Person> authors = new HashSet<Person>();
        for (Party party : RootDomainObject.getInstance().getPartysSet()) {
            if (party instanceof Person) {
                if (((Person) party).hasAnyResultParticipations()) {
                    authors.add((Person) party);
                }
            }
        }
        return authors;
    }

    @Override
    public boolean isMember(Person person) {
        return person != null && person.hasAnyResultParticipations();
    }

    @Override
    protected Argument[] getExpressionArguments() {
        return new Argument[0];
    }

}