package org.apache.ode.jacob;

import java.util.Set;

import org.apache.ode.jacob.oo.Channel;
import org.apache.ode.jacob.oo.ChannelListener;
import org.apache.ode.jacob.soup.CommChannel;
import org.apache.ode.jacob.vpu.JacobVPU;

public class Jacob {

    public static Object getExtension(Class<?> extensionClass) {
        return JacobVPU.activeJacobThread().getExtension(extensionClass);
    }

    @SuppressWarnings("unchecked")
    public static <T extends Channel> T importChannel(String channelId, Class<T> channelClass) {
        return (T) JacobVPU.activeJacobThread().importChannel(channelId, channelClass);
    }

    /**
     * Instantiation; the Java code <code>instance(new F(x,y,z))</code> is
     * equivalent to <code>F(x,y,z)</code> in the process calculus.
     *
     * @param concretion the concretion of a process template
     */
    public static void instance(Runnable concretion) {
        JacobVPU.activeJacobThread().instance(concretion);
    }

    public static <T extends Channel> T newChannel(Class<T> channelType)
            throws IllegalArgumentException {
        return newChannel(channelType, null);
    }

    /**
     * Channel creation; the Java code <code>Channel x = newChannel(XChannel.class) ...</code>
     * is equivalent to <code>(new x) ... </code> in the process calculus.
     */
    @SuppressWarnings("unchecked")
    public static <T extends Channel> T newChannel(Class<T> channelType, String description)
        throws IllegalArgumentException
    {
        return (T) JacobVPU.activeJacobThread().newChannel(channelType, description);
    }

    /**
     * Object; the Java code "object(x, ChannelListener)" is equivalent to
     * <code>x ? ChannelListener</code> in the process algebra.
     *
     * @param methodList method list for the communication reduction
     * @see JacobThread#object
     */
    public static void object(ChannelListener methodList) {
        JacobVPU.activeJacobThread().object(false, methodList);
    }

    public static void object(boolean replication, ChannelListener methodList) {
        JacobVPU.activeJacobThread().object(replication, methodList);
    }
    
    public static void object(boolean replication, Set<ChannelListener> methodLists) {
        JacobVPU.activeJacobThread().object(replication,
                methodLists.toArray(new ChannelListener[methodLists.size()]));
    }

    // calculus API

    /**
     * DOCUMENT ME
     * @param channel
     * @return
     */
    public static ChannelRef newCommChannel(String description) {
        return JacobVPU.activeJacobThread().newCommChannel(description);
    }
    
    /**
     * DOCUMENT ME
     * @param channel
     * @return
     */
    public static String exportCommChannel(CommChannel channel) {
        return JacobVPU.activeJacobThread().exportCommChannel(channel);
    }

    /**
     * DOCUMENT ME
     * @param channel
     * @return
     */
    public static ChannelRef importCommChannel(String channelId, Class<?> channelType) {
        return JacobVPU.activeJacobThread().importCommChannel(channelId, channelType);
    }
    
    /**
     * Send a message. 
     *
     * @param message
     *            self-contained message
     */
    public static void sendMessage(Message message) {
        JacobVPU.activeJacobThread().sendMessage(message);
    }

    public static void subscribe(boolean replicate, ChannelRef channel, MessageListener messageListener) throws IllegalArgumentException {
        JacobVPU.activeJacobThread().subscribe(replicate, channel, messageListener);
    }
    
    public static void subscribe(boolean replicate, ChannelRef channel, MessageListener[] messageListeners) throws IllegalArgumentException {
        JacobVPU.activeJacobThread().subscribe(replicate, channel, messageListeners);
    }

    
}