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package org.glassfish.loadbalancer.admin.cli.transform;

import org.glassfish.loadbalancer.admin.cli.reader.api.BaseReader;
import org.glassfish.loadbalancer.admin.cli.reader.api.PropertyReader;
import org.glassfish.loadbalancer.admin.cli.reader.api.LoadbalancerReader;
import org.glassfish.loadbalancer.admin.cli.reader.api.ClusterReader;

import org.glassfish.loadbalancer.admin.cli.beans.Cluster;
import org.glassfish.loadbalancer.admin.cli.beans.Loadbalancer;
import org.glassfish.loadbalancer.admin.cli.beans.Property;

/**
 * Provides transform capabilites for LB
 *
 * @author Satish Viswanatham
 */
public class LoadbalancerVisitor implements Visitor {

    // ------ CTOR ------
    public LoadbalancerVisitor(Loadbalancer lb) {
        _lb = lb;
    }

    /**
     * Visit reader class 
     */
    @Override
    public void visit(BaseReader br) throws Exception {
        // FIXME, make as assert here about no class cast exception
		if (br instanceof LoadbalancerReader) {
			LoadbalancerReader lbRdr = (LoadbalancerReader) br;

			PropertyReader[] pRdrs = lbRdr.getProperties();

			if ((pRdrs != null) && (pRdrs.length > 0)) {
				Property[] props = new Property[pRdrs.length];
				for (int i = 0; i < pRdrs.length; i++) {
					props[i] = new Property();
					pRdrs[i].accept(new PropertyVisitor(props[i]));
				}
				_lb.setProperty2(props);
			}

			ClusterReader[] cRdrs = lbRdr.getClusters();

			if ((cRdrs != null) && (cRdrs.length > 0)) {
				Cluster[] cls = new Cluster[cRdrs.length];
				for (int i = 0; i < cRdrs.length; i++) {
					cls[i] = new Cluster();
					cRdrs[i].accept(new ClusterVisitor(cls[i]));
				}
				_lb.setCluster(cls);
			}
		}
    }
    //--- PRIVATE VARS ----
    Loadbalancer _lb = null;
}