/*******************************************************************************
 * Copyright (c) 2007, 2011 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.db.management.discovery;

import java.net.InetSocketAddress;

/**
 * @author Tuukka Lehtonen
 */
public final class InetAddressUtils {

    /**
     * @param hostAndPort
     * @return
     * @throws IllegalArgumentException
     */
    public static InetSocketAddress parse(String hostAndPort) throws IllegalArgumentException {
        String[] split = hostAndPort.split(":");
        if (split.length != 2)
            throw new IllegalArgumentException("address does not contain a port, missing ':' character");
        return new InetSocketAddress(split[0], Integer.parseInt(split[1]));
    }

    /**
     * @param hostAndPort
     * @return
     * @throws IllegalArgumentException
     */
    public static InetSocketAddress parseUnresolved(String hostAndPort) throws IllegalArgumentException {
        String[] split = hostAndPort.split(":");
        if (split.length != 2)
            throw new IllegalArgumentException("address does not contain a port, missing ':' character");
        return InetSocketAddress.createUnresolved(split[0], Integer.parseInt(split[1]));
    }

    public static String toHostString(InetSocketAddress address) {
        if (address == null) return "null";
        return address.getHostName() + ":" + address.getPort();
    }
    
    /**
     * @param hostAndPort
     * @return
     * @throws IllegalArgumentException
     */
    public static InetSocketAddress parseHostAddressPort(String hostAddressPort) throws IllegalArgumentException {
        String[] split = hostAddressPort.split(":");
        if (split.length != 2)
            throw new IllegalArgumentException("address not in format '[<host>/]<address>:port', does not contain a port, missing ':' character: " + hostAddressPort);
        String[] split2 = split[0].split("/");
        if (split2.length == 1)
            return new InetSocketAddress(split[0], Integer.parseInt(split[1]));
        if (split2.length == 2)
            return new InetSocketAddress(split2[1], Integer.parseInt(split[1]));
        throw new IllegalArgumentException("expected address in format '[<host>/]<address>:port', got " + hostAddressPort);
    }

    public static void main(String[] args) {
        System.out.println(parseHostAddressPort("/127.0.0.1:1234"));
        System.out.println(parseHostAddressPort("localhost/127.0.0.1:1234"));
        System.out.println(parseHostAddressPort("127.0.0.1:1234"));
        System.out.println(parseHostAddressPort("localhost:1234"));
    }
}