package net.sourceforge.fenixedu.domain.accessControl;

import java.util.List;

import net.sourceforge.fenixedu.domain.Person;
import net.sourceforge.fenixedu.domain.RootDomainObject;
import net.sourceforge.fenixedu.domain.exceptions.DomainException;

import org.apache.commons.lang.StringUtils;

import pt.ist.fenixWebFramework.security.accessControl.Checked;

public class PersistentGroupMembers extends PersistentGroupMembers_Base {

    @Checked("PersistentGroupMembersPredicates.checkPermissionsToManagePersistentGroups")
    public PersistentGroupMembers(String name, PersistentGroupMembersType type) {
	super();
	setRootDomainObject(RootDomainObject.getInstance());
	setName(name);
	setType(type);
	checkIfPersistenGroupAlreadyExists(name, type);
    }

    @Checked("PersistentGroupMembersPredicates.checkPermissionsToManagePersistentGroups")
    public void edit(String name, PersistentGroupMembersType type) {
	setName(name);
	setType(type);
	checkIfPersistenGroupAlreadyExists(name, type);
    }

    @Checked("PersistentGroupMembersPredicates.checkPermissionsToManagePersistentGroups")
    public void delete() {
	getPersons().clear();
	if (hasUnit()) {
	    getUnit().removeGroupFromUnitFiles(this);
	}
	removeUnit();
	removeRootDomainObject();
	deleteDomainObject();
    }

    @Checked("PersistentGroupMembersPredicates.checkPermissionsToManagePersistentGroups")
    public void setNewPersonToMembersList(Person person) {
	if (person == null) {
	    throw new DomainException("error.PersistentGroupMembers.empty.person");
	}
	addPersons(person);
    }

    @Override
    @Checked("PersistentGroupMembersPredicates.checkPermissionsToManagePersistentGroups")
    public void removePersons(Person person) {
	super.removePersons(person);
    }

    // This method is only used for Renderers
    public Person getNewPersonToMembersList() {
	return null;
    }

    @Override
    public void setName(String name) {
	if (StringUtils.isEmpty(name)) {
	    throw new DomainException("error.PersistentGroupMembers.empty.name");
	}
	super.setName(name);
    }

    @Override
    public void setType(PersistentGroupMembersType type) {
	if (type == null) {
	    throw new DomainException("error.PersistentGroupMembers.empty.type");
	}
	super.setType(type);
    }

    private void checkIfPersistenGroupAlreadyExists(String name, PersistentGroupMembersType type) {
	List<PersistentGroupMembers> persistentGroupMembers = RootDomainObject.getInstance().getPersistentGroupMembers();
	for (PersistentGroupMembers persistentGroup : persistentGroupMembers) {
	    if (!persistentGroup.equals(this) && persistentGroup.getName().equalsIgnoreCase(name)
		    && persistentGroup.getType().equals(type)) {
		throw new DomainException("error.PersistentGroupMembers.group.already.exists");
	    }
	}
    }
}