source: trunk/gsdl3/src/java/org/greenstone/gsdl3/action/SystemAction.java@ 4144

package org.greenstone.gsdl3.action;

import org.greenstone.gsdl3.core.ModuleInterface;
import org.greenstone.gsdl3.util.*;

// XML classes
import org.w3c.dom.Node; 
import org.w3c.dom.Element; 
import org.w3c.dom.Document; 

// other java stuff
import java.io.File;
import java.util.HashMap;

public class SystemAction extends Action {
    
    /** process a request */
    public Element process (Element message) {
    
    // assume only one request
    Element request = (Element)GSXML.getChildByTagName(message, GSXML.REQUEST_ELEM);
    
    String subaction = request.getAttribute(GSXML.SUBACTION_ATT);
    String lang = request.getAttribute(GSXML.LANG_ATT);
    // get the param list
    Element cgi_param_list = (Element)GSXML.getChildByTagName(request, GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
    HashMap params = GSXML.extractParams(cgi_param_list, false);

    Element page = doc_.createElement(GSXML.PAGE_ELEM);
    page.setAttribute(GSXML.LANG_ATT, lang);

    // add the page extra stuff from message
    page.appendChild(doc_.importNode(GSXML.getChildByTagName(message, GSXML.PAGE_EXTRA_ELEM), true));

    String coll = (String)params.get(GSCGI.COLLECTION_ARG);

    String to = "";
    if (coll!=null && !coll.equals("")) {
        to = coll;
    }

    Element mr_request_message = doc_.createElement(GSXML.MESSAGE_ELEM);
    Element mr_request = GSXML.createBasicRequest(doc_, GSXML.REQUEST_TYPE_SYSTEM, to, lang);
    mr_request_message.appendChild(mr_request);
    
    Element system = doc_.createElement(GSXML.SYSTEM_ELEM);
    mr_request.appendChild(system);
    
    // will need to change the following if can do more than one system request at once
    if (subaction.equals("c")) { // configure
        system.setAttribute(GSXML.TYPE_ATT, GSXML.SYSTEM_TYPE_CONFIGURE);
        String info = (String)params.get(GSCGI.STATUS_SUBSET_ARG);
        system.setAttribute(GSXML.SYSTEM_SUBSET_ATT, info);
    
    } else {
        String name = (String)params.get(GSCGI.STATUS_MODULE_NAME_ARG);
        String type = (String)params.get(GSCGI.STATUS_MODULE_TYPE_ARG);

        system.setAttribute(GSXML.SYSTEM_MODULE_NAME_ATT, name);
        system.setAttribute(GSXML.SYSTEM_MODULE_TYPE_ATT, type);
        
        if (subaction.equals("d")) { // delete
        system.setAttribute(GSXML.TYPE_ATT, GSXML.SYSTEM_TYPE_DEACTIVATE);

        } else if (subaction.equals("a")) { // add
        system.setAttribute(GSXML.TYPE_ATT, GSXML.SYSTEM_TYPE_ACTIVATE);
        } else {
        // create the default response
        // for now just have an error
        System.err.println("SystemAction error: bad subaction type");
        return null;
        }
    }

    Element response_message = mr_.process(mr_request_message);
    
    page.appendChild(GSXML.duplicateWithNewName(doc_, (Element)GSXML.getChildByTagName(response_message, GSXML.RESPONSE_ELEM), GSXML.PAGE_RESPONSE_ELEM, true));
    
    // check that the stylesheet is present - cant output the page without one. 
    String stylesheet = GSFile.stylesheetFile(config_, "system.xsl");
    if (stylesheet==null) {
        System.err.println("SystemAction Error: system stylesheet not found!");
        return page;
    }
    Document style_doc = converter_.getDOM(new File(stylesheet));
    GSXSLT.absoluteIncludePaths(style_doc, config_);
    return (Element)transformer_.transform(style_doc, page);

    
    }

}