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package org.glassfish.gms.admin;

import com.sun.enterprise.admin.cli.CLICommand;
import com.sun.enterprise.gms.tools.MulticastTester;
import org.glassfish.api.Param;
import org.glassfish.api.admin.CommandException;
import org.jvnet.hk2.annotations.Scoped;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.component.PerLookup;

import java.util.ArrayList;
import java.util.List;

/**
 * asadmin local command that wraps the multicast validator tool
 * in shoal-gms-impl.jar
 */
@Service(name="validate-multicast")
@Scoped(PerLookup.class)
public final class ValidateMulticastCommand extends CLICommand {

    /*
     * These are copied from the Shoal workspace. We could get the
     * values from public fields in that code, but we don't want them
     * to be able to be changed out from under us.
     */
    private static final String DASH = "--";
    private static final String PORT_OPTION = "multicastport";
    private static final String ADDRESS_OPTION = "multicastaddress";
    private static final String BIND_INT_OPTION = "bindinterface";
    private static final String PERIOD_OPTION = "sendperiod";
    private static final String TIMEOUT_OPTION = "timeout";
    private static final String DEBUG_OPTION = "debug";

    @Param(name=PORT_OPTION, optional=true)
    private String port;

    @Param(name=ADDRESS_OPTION, optional=true)
    private String address;

    @Param(name=BIND_INT_OPTION, optional=true)
    private String bindInterface;

    @Param(name=PERIOD_OPTION, optional=true)
    private String period;

    @Param(name=TIMEOUT_OPTION, optional=true)
    private String timeout;

    @Param(name="verbose", optional=true)
    private String debug;

    @Override
    protected int executeCommand() throws CommandException {
        // todo: see if we can have exceptions come back to us for decent return value
        MulticastTester.main(createArgs());
        return 0;
    }

    private String [] createArgs() {
        List argList = new ArrayList();
        if (port != null && !port.isEmpty()) {
            argList.add(DASH + PORT_OPTION);
            argList.add(port);
        }
        if (address != null && !address.isEmpty()) {
            argList.add(DASH + ADDRESS_OPTION);
            argList.add(address);
        }
        if (bindInterface != null && !bindInterface.isEmpty()) {
            argList.add(DASH + BIND_INT_OPTION);
            argList.add(bindInterface);
        }
        if (period != null && !period.isEmpty()) {
            argList.add(DASH + PERIOD_OPTION);
            argList.add(period);
        }
        if (timeout != null && !timeout.isEmpty()) {
            argList.add(DASH + TIMEOUT_OPTION);
            argList.add(timeout);
        }
        if (debug != null && "true".equalsIgnoreCase(debug)) {
            argList.add(DASH + DEBUG_OPTION);
        }
        return argList.toArray(new String[0]);
    }
}