// message.java 
// -----------------------
// part of the AnomicHTTPD caching proxy
// (C) by Michael Peter Christen; mc@anomic.de
// first published on http://www.anomic.de
// Frankfurt, Germany, 2004
// last major change: 29.06.2003
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// Using this software in any meaning (reading, learning, copying, compiling,
// running) means that you agree that the Author(s) is (are) not responsible
// for cost, loss of data or any harm that may be caused directly or indirectly
// by usage of this softare or this documentation. The usage of this software
// is on your own risk. The installation and usage (starting/running) of this
// software may allow other people or application to access your computer and
// any attached devices and is highly dependent on the configuration of the
// software which must be done by the user of the software; the author(s) is
// (are) also not responsible for proper configuration and usage of the
// software, even if provoked by documentation provided together with
// the software.
//
// Any changes to this file according to the GPL as documented in the file
// gpl.txt aside this file in the shipment you received can be done to the
// lines that follows this copyright notice here, but changes must not be
// done inside the copyright notive above. A re-distribution must contain
// the intact and unchanged copyright notice.
// Contributions and changes to the program code must be marked as such.


// You must compile this file with
// javac -classpath .:../../Classes message.java
// if the shell's current path is HTROOT/yacy

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import de.anomic.http.httpHeader;
import de.anomic.plasma.plasmaSwitchboard;
import de.anomic.server.serverFileUtils;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
import de.anomic.tools.crypt;
import de.anomic.yacy.yacyCore;
import de.anomic.yacy.yacySeed;

public class message {

    private static SimpleDateFormat SimpleFormatter = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
    public static String dateString(Date date) {
	return SimpleFormatter.format(date);
    }


    public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
	// return variable that accumulates replacements
	plasmaSwitchboard switchboard = (plasmaSwitchboard) env;
	serverObjects prop = new serverObjects();

	//System.out.println("yacy/message:post=" + post.toString());

	if ((post == null) || (env == null)) return new serverObjects();

	String process = (String) post.get("process", "permission");
	String key =  (String) post.get("key", "");

	int messagesize = 10240;
	int attachmentsize = 0;

	prop.put("messagesize", "0");
	prop.put("attachmentsize", "0");
        
        //System.out.println("DEBUG yacy/message: message post values = " + post.toString());

	String youare = (String) post.get("youare", ""); // seed hash of the target peer, needed for network stability
	// check if we are the right target and requester has correct information about this peer
	if ((yacyCore.seedDB.mySeed == null) || (!(yacyCore.seedDB.mySeed.hash.equals(youare)))) {
	    // this request has a wrong target
        //System.out.println("DEBUG yacy/message: authenticate failed");
	    prop.put("response", "-1"); // request rejected
	    return prop;
	}

        prop.put("messagesize", "" + messagesize);
	prop.put("attachmentsize", "" + attachmentsize);

	if (process.equals("permission")) {
	    // permission: respond with accceptabeale message and attachment size
	    String iam = (String) post.get("iam", "");    // seed hash of requester
	    prop.put("response", "Welcome to my peer!");
	    // that's it!
	}

	if (process.equals("post")) {
	    // post: post message to message board
	    String otherSeedString = (String) post.get("myseed", "");
	    if (otherSeedString.length() == 0) {
		prop.put("response", "-1"); // request rejected
		return prop;
	    }
            Date remoteTime = yacyCore.parseUniversalDate((String) post.get("mytime")); // read remote time
	    yacySeed otherSeed = yacySeed.genRemoteSeed(otherSeedString, key, remoteTime);

	    String subject = crypt.simpleDecode((String) post.get("subject", ""), key); // message's subject
	    String message = crypt.simpleDecode((String) post.get("message", ""), key); // message body

	    prop.put("response", "Thank you!");

            // save message
            switchboard.messageDB.write(switchboard.messageDB.newEntry(
                                            "remote",
                                            otherSeed.get("Name", "anonymous"), otherSeed.hash,
                                            yacyCore.seedDB.mySeed.getName(), yacyCore.seedDB.mySeed.hash,
                                            subject, message.getBytes()));

            // finally write notification
            File notifierSource = new File(switchboard.getRootPath(), switchboard.getConfig("htRootPath","htroot") + "/env/grafics/notifierActive.gif");
            File notifierDest   = new File(switchboard.getRootPath(), switchboard.getConfig("htRootPath","htroot") + "/env/grafics/notifier.gif");
            try {
		serverFileUtils.copy(notifierSource, notifierDest);
	    } catch (IOException e) {
		System.out.println("NEW MESSAGE ARRIVED! (error: " + e.getMessage() + ")");
	    };
        }
	//System.out.println("respond = " + prop.toString());

	// return rewrite properties
	return prop;
    }
/*
on 83 
DEBUG: message post values = {youare=Ty2F86ekSWM5, key=pPQSZaXD, iam=WSjicAx1hRio, process=permission}
von 93 wurde gesendet:
DEBUG: PUT BODY=------------1090394265522
Content-Disposition: form-data; name="youare"

Ty2F86ekSWM5
------------1090394265522
Content-Disposition: form-data; name="key"

pPQSZaXD
------------1090394265522
Content-Disposition: form-data; name="iam"

WSjicAx1hRio
------------1090394265522
Content-Disposition: form-data; name="process"

permission
------------1090394265522


on 93
DEBUG: message post values = {youare=WSjicAx1hRio, key=YJZLwaNS, iam=Ty2F86ekSWM5, process=permission}

 */
}