// MessageSend_p.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: 28.06.2003
//
// 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 MessageSend_p.java
// if the shell's current path is HTROOT

import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;

import de.anomic.http.httpHeader;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
import de.anomic.yacy.yacyClient;
import de.anomic.yacy.yacyCore;
import de.anomic.yacy.yacySeed;

public class MessageSend_p {

    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) {
	serverObjects prop = new serverObjects();

	if ((post == null) || (post.get("hash","").length() == 0)) {
            prop.put("mode",2);
	    return prop;
	}
	
	String hash    = post.get("hash", "");
	String subject = post.get("subject", "");
	String message = post.get("message", "");

	if ((message.length() == 0) || (post.containsKey("preview"))) {
            if (post.containsKey("preview")) {
	       prop.put("mode", 1);
            } else {
                prop.put("mode", 0);
            }

	    // open an editor page for the message
	    // first ask if the other peer is online, and also what kind of document it accepts
	    HashMap result = yacyClient.permissionMessage(hash);
	    //System.out.println("DEBUG: permission request result = " + result.toString());
	    String peerName;
	    yacySeed targetPeer = null;
	    if (hash.equals(yacyCore.seedDB.mySeed.hash)) {
	        peerName = yacyCore.seedDB.mySeed.get(yacySeed.NAME,"nameless");
	    } else {
	        targetPeer = yacyCore.seedDB.getConnected(hash);
	        if (targetPeer == null)
	            peerName = "nameless";
	        else
	            peerName = targetPeer.get(yacySeed.NAME,"nameless");
	    }

            prop.put("mode_permission_peerName", peerName);
	    String response = (result == null) ? "-1" : (String) result.get("response");
	    if ((response == null) || (response.equals("-1"))) {
	        // we don't have permission or other peer does not exist
                prop.put("mode_permission",0);

	        if (targetPeer != null) {
	            yacyCore.peerActions.peerDeparture(targetPeer);
	        }
	    } else {
            prop.put("mode_permission",1);

                // write input form
                try {
                    int messagesize = Integer.parseInt((String) result.get("messagesize"));
                    int attachmentsize = Integer.parseInt((String) result.get("attachmentsize"));

                    prop.put("mode_permission_response", response);
                    prop.put("mode_permission_messagesize", messagesize);
                    prop.put("mode_permission_attachmentsize", attachmentsize);
                    prop.put("mode_permission_subject", subject);
                    prop.put("mode_permission_message", message);
                    prop.put("mode_permission_hash", hash);
                    if (post.containsKey("preview")) {
                        prop.putWiki("mode_permission_previewmessage", message);

                    }

                } catch (NumberFormatException e) {
                    // "unresolved pattern", the remote peer is alive but had an exception
                    prop.put("mode_permission",2);
                }
	    }
	} else {
	    prop.put("mode", 2);
	    // send written message to peer
	    try {
            prop.put("mode_status", 0);
	        int messagesize = Integer.parseInt(post.get("messagesize", "0"));
	        //int attachmentsize = Integer.parseInt(post.get("attachmentsize", "0"));

	        if (messagesize < 1000) messagesize = 1000; // debug
	        if (subject.length() > 100) subject = subject.substring(0, 100);
	        if (message.length() > messagesize) message = message.substring(0, messagesize);
	        byte[] mb;
	        try {
	            mb = message.getBytes("UTF-8");
	        } catch (UnsupportedEncodingException e) {
	            mb = message.getBytes();
	        }
	        HashMap result = yacyClient.postMessage(hash, subject, mb);

                //message has been sent
                prop.put("mode_status_response", result.get("response"));

	    } catch (NumberFormatException e) {
                prop.put("mode_status", 1);

	        // "unresolved pattern", the remote peer is alive but had an exception
                prop.put("mode_status_message", message);
	    }
	}

	return prop;
    }

}