/*
 * Copyright (c) 2016, Ariane van der Steldt
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * Neither the name of GROUPON nor the names of its contributors may be
 * used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.groupon.lex.metrics.lib;

import java.net.InetSocketAddress;
import java.net.UnknownHostException;
import org.kohsuke.args4j.CmdLineException;
import org.kohsuke.args4j.CmdLineParser;
import org.kohsuke.args4j.OptionDef;
import org.kohsuke.args4j.spi.OptionHandler;
import org.kohsuke.args4j.spi.Parameters;
import org.kohsuke.args4j.spi.Setter;

/**
 * Resolves a name to many inet socket addresses.
 */
public class ManyInetAddressOptionHandler extends OptionHandler<InetSocketAddress> {
    public ManyInetAddressOptionHandler(CmdLineParser parser, OptionDef option, Setter<? super InetSocketAddress> setter) {
        super(parser, option, setter);
    }

    protected int defaultPort() {
        return 0;
    }

    @Override
    public int parseArguments(Parameters prmtrs) throws CmdLineException {
        final HostnamePort hp = HostnamePort.valueOf(prmtrs.getParameter(0), defaultPort());

        try {
            for (InetSocketAddress addr : hp.getAddressList())
                setter.addValue(addr);
            return 1;
        } catch (UnknownHostException ex) {
            throw new CmdLineException(owner, "unable to resolve " + hp.getHostname(), ex);
        }
    }

    @Override
    public String getDefaultMetaVariable() {
        return "inet-address";
    }

    @Override
    protected String print(InetSocketAddress v) {
        return v.toString();
    }
}