/*
 * Copyright 2007 Sun Microsystems, Inc.
 *
 * This file is part of jVoiceBridge.
 *
 * jVoiceBridge is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation and distributed hereunder
 * to you.
 *
 * jVoiceBridge is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Sun designates this particular file as subject to the "Classpath"
 * exception as provided by Sun in the License file that accompanied this
 * code.
 */

package com.sun.voip.server;

import com.sun.voip.CallParticipant;
import com.sun.voip.CallState;
import com.sun.voip.Logger;
import com.sun.voip.MediaInfo;
import com.sun.voip.RtpPacket;
import com.sun.voip.SdpInfo;

import java.text.ParseException;
import java.net.InetSocketAddress;

/**
 * Non-Signaling handles calls setup by an external source.
 */
public class NSIncomingCallAgent extends CallSetupAgent {

    private SipUtil sipUtil;

    public NSIncomingCallAgent(CallHandler callHandler) {
		super(callHandler);

        MediaInfo mixerMediaPreference =
            callHandler.getConferenceManager().getMediaInfo();

        sipUtil = new SipUtil(mixerMediaPreference);
    }




    public void initiateCall() {
		setState(CallState.INVITED);

		CallParticipant cp = callHandler.getCallParticipant();

		String remoteMediaInfo = cp.getRemoteMediaInfo();

		if (Logger.logLevel >= Logger.LOG_MOREINFO) {
			Logger.println("Call " + cp
			+ ":   NSIncomingCallAgent remoteMediaInfo " + remoteMediaInfo);
		}

		String[] tokens = remoteMediaInfo.split("\\+");

		/*
		 * The remote media info is the SDP info but instead of
		 * new line as the separator, it has "+".
		 * Reformat the SDP with \r\n.
		 */
		String sdp = "";

		for (int i = 0; i < tokens.length; i++) {
			sdp += tokens[i] + "\r\n";
		}

		if (Logger.logLevel >= Logger.LOG_MOREINFO) {
			Logger.println("Call " + cp
			+ ":  NSIncomingCallAgent Sdp\n" + sdp);
		}

		SdpInfo sdpInfo = null;

		try {
			sdpInfo = sipUtil.getSdpInfo(sdp, true);

				String remoteHost = sdpInfo.getRemoteHost();
				int remotePort = sdpInfo.getRemotePort();

				Logger.println("Call " + cp
					+ ":  NSIncomingCallAgent:  remote socket " + remoteHost + " "
					+ remotePort + " mediaInfo " + sdpInfo.getMediaInfo());

					InetSocketAddress isa =
						new InetSocketAddress(remoteHost, remotePort);

					setEndpointAddress(isa, sdpInfo.getMediaInfo().getPayload(),
					sdpInfo.getTransmitMediaInfo().getPayload(),
					sdpInfo.getTelephoneEventPayload());

		} catch (ParseException e) {
			Logger.println("Call " + cp
			+ ":  NSIncomingCallAgent couldn't parse sdp");
				cancelRequest("NSIncomingCallAgent couldn't parse sdp");
			return;
		}

		setState(CallState.ANSWERED);
			setState(CallState.ESTABLISHED);
    }

}