/**************************************************************************
 * CreateNewAgent.java
 *
 * Copyright (C) 2001 CERN - European Organization for Nuclear Research
 * All rights reserved.
 **************************************************************************/

package com.c2kernel.lifecycle.instance.predefined.server;

import java.util.Arrays;

import com.c2kernel.common.CannotManageException;
import com.c2kernel.common.InvalidDataException;
import com.c2kernel.common.ObjectCannotBeUpdated;
import com.c2kernel.common.ObjectNotFoundException;
import com.c2kernel.lifecycle.instance.predefined.PredefinedStep;
import com.c2kernel.lookup.AgentPath;
import com.c2kernel.lookup.ItemPath;
import com.c2kernel.lookup.LookupManager;
import com.c2kernel.lookup.RolePath;
import com.c2kernel.process.Gateway;
import com.c2kernel.utils.Logger;

public class RemoveRole extends PredefinedStep
{
    public RemoveRole()
    {
        super();
    }

	//requestdata is xmlstring
    @Override
	protected String runActivityLogic(AgentPath agent, ItemPath item,
			int transitionID, String requestData) throws InvalidDataException {
    	
    	String[] params = getDataList(requestData);
    	if (Logger.doLog(3)) Logger.msg(3, "AddC2KObject: called by "+agent+" on "+item+" with parameters "+Arrays.toString(params));
    	LookupManager lookup;
		try {
			lookup = Gateway.getLookupManager();
		} catch (CannotManageException e) {
			throw new InvalidDataException(e.getMessage(), "");
		}
		
       	RolePath thisRole;
		try {
			thisRole = lookup.getRolePath(params[0]);
		} catch (ObjectNotFoundException e) {
			throw new InvalidDataException("Role "+params[0]+" not found.", "");
		}
       	AgentPath[] agents = thisRole.getAgentsWithRole();
       	if (agents.length > 0)
       		throw new InvalidDataException("Cannot remove role. "+agents.length+" agents still hold it.", "");
       	try {
			lookup.removeRole(agent, thisRole);
		} catch (ObjectCannotBeUpdated e) {
			Logger.error(e);
			throw new InvalidDataException("Role "+params[0]+" could not be removed.", "");
		} catch (ObjectNotFoundException e) {
			throw new InvalidDataException("Role "+params[0]+" not found.", "");
		}

        return requestData;

    }
}