// Steering.java
// -----------------------
// part of YaCy
// (C) by Michael Peter Christen; mc@anomic.de
// first published on http://www.anomic.de
// Frankfurt, Germany, 2004, 2005
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
// 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 SettingsAck_p.java
// if the shell's current path is HTROOT

import java.io.File;

import de.anomic.http.httpHeader;
import de.anomic.plasma.plasmaSwitchboard;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
import de.anomic.yacy.yacyVersion;

public class Steering {

    public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch<?> ss) {
        if (post == null || ss == null) { return new serverObjects(); }

        final plasmaSwitchboard sb = (plasmaSwitchboard) ss;
        final serverObjects prop = new serverObjects();
        prop.put("info", "0"); //no information submitted
        if (prop == null) { return null; }

        // handle access rights
        if (!sb.verifyAuthentication(header, false)) {
            prop.put("AUTHENTICATE", "admin log-in"); // force log-in
            return prop;
        }

        if (post.containsKey("shutdown")) {
            sb.terminate(5000);
            prop.put("info", "3");
            return prop;
        }

        if (post.containsKey("restart")) {
            yacyVersion.restart();
            prop.put("info", "4");

            return prop;
        }
        
        if (post.containsKey("update")) {
            boolean devenvironment = yacyVersion.combined2prettyVersion(sb.getConfig("version","0.1")).startsWith("dev");
            String releaseFileName = post.get("releaseinstall", "");
            File releaseFile = new File(sb.getRootPath(), "DATA/RELEASE/" + releaseFileName);
            if ((!devenvironment) && (releaseFile.length() > 0) && (releaseFile.exists())) {
                yacyVersion.deployRelease(releaseFile);
            }
            prop.put("info", "5");
            prop.put("info_release", releaseFileName);

            return prop;
        }
        return prop;
    }

}