package com.c2kernel.lifecycle.instance;

import java.util.Enumeration;
import java.util.Iterator;

import com.c2kernel.entity.Agent;
import com.c2kernel.entity.AgentHelper;
import com.c2kernel.entity.agent.Job;
import com.c2kernel.entity.agent.JobArrayList;
import com.c2kernel.lifecycle.instance.stateMachine.Transitions;
import com.c2kernel.lookup.AgentPath;
import com.c2kernel.lookup.RolePath;
import com.c2kernel.process.Gateway;
import com.c2kernel.utils.Logger;

final class JobPusher extends Thread {
    private final Activity activity;
    private final RolePath myRole;

    JobPusher(Activity activity, RolePath role) {
        this.activity = activity;
        this.myRole = role;
    }

    @Override
	public void run()
    {
        Thread.currentThread().setName("Agent job pusher for "+activity.getName()+" to role "+myRole);
    	for (Enumeration<AgentPath> e = myRole.getChildren(); e.hasMoreElements();)
    	{
            AgentPath nextAgent = e.nextElement();
    		Logger.msg(7, "Activity.pushJobsToAgents() - Calculating jobs for " + nextAgent.getAgentName());
    		try
    		{
    			// get joblist for user
    			JobArrayList jobList = new JobArrayList(this.activity.calculateJobs(nextAgent, false));
    			// only transmit start, complete and resume jobs
    			for (Iterator<Job> element = jobList.list.iterator(); element.hasNext();)
    			{
    				Job thisJob = element.next();
    				if (thisJob.getPossibleTransition() != Transitions.START
    					&& thisJob.getPossibleTransition() != Transitions.COMPLETE
                    && thisJob.getPossibleTransition() != Transitions.RESUME
                    && thisJob.getPossibleTransition() != Transitions.SUSPEND
                    && thisJob.getPossibleTransition() != Transitions.REASSIGN)
    					element.remove();
    			}
    			Logger.msg(7, "Activity.pushJobsToAgents() - User will receive " + jobList.list.size() + " jobs");
    			String stringJobs = Gateway.getMarshaller().marshall(jobList);
    			// push it to the agent
    			org.omg.CORBA.Object agentIOR = nextAgent.getIOR();
    			Agent thisAgent = AgentHelper.narrow(agentIOR);
    			Logger.debug("Calling agent "+thisAgent.getSystemKey()+" from "+activity.getPath());
    			thisAgent.refreshJobList(this.activity.getItemEntityPath().getSysKey(), activity.getPath(), stringJobs);
    		}
    		catch (Exception ex)
    		{
    			Logger.error(
    				"Agent "
    					+ nextAgent.getAgentName()
    					+ " of role "
    					+ myRole
    					+ " could not be found to be informed of a change in "
    					+ this.activity.getItemEntityPath().getSysKey());
    			Logger.error(ex);
    		}
    	}

    }
}