source: main/trunk/greenstone3/src/java/org/greenstone/gsdl3/action/SystemAction.java@ 23333

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;
import java.util.*;
import java.io.StringReader;
import org.xml.sax.InputSource;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.apache.log4j.*;

public class SystemAction extends Action {
    
      static Logger logger = Logger.getLogger(org.greenstone.gsdl3.action.SystemAction.class.getName());

    /** process a request */
    public Node process (Node message_node) {
    
    Element message = this.converter.nodeToElement(message_node);

    // 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);
    String uid = request.getAttribute(GSXML.USER_ID_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 result = this.doc.createElement(GSXML.MESSAGE_ELEM);
    
    String coll = (String)params.get(GSParams.SYSTEM_CLUSTER);

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

    Element mr_request_message = this.doc.createElement(GSXML.MESSAGE_ELEM);
    Element mr_request = GSXML.createBasicRequest(this.doc, GSXML.REQUEST_TYPE_SYSTEM, to, lang, uid);
    mr_request_message.appendChild(mr_request);
    
    Element system = this.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(GSParams.SYSTEM_SUBSET);
        system.setAttribute(GSXML.SYSTEM_SUBSET_ATT, info);
    }
    else if(subaction.equals("s")) { // save format statement
         logger.error("Initiate save");
         String format_string = (String)params.get("data");
         logger.error("data="+format_string);
         Iterator it = params.keySet().iterator();
         while(it.hasNext())
         {
            logger.error("Param: "+it.next());
         }  
        Element page_response = this.doc.createElement(GSXML.RESPONSE_ELEM);

        try {
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = factory.newDocumentBuilder();
            InputSource is = new InputSource( new StringReader( format_string ) );
            Document d = builder.parse( is );
            page_response.appendChild(d);
        }
        catch( Exception ex ) {
            logger.error("There was an exception "+ex);
        }

        //Element child = this.doc.createElement("div"); //format_string);
        //Node text = this.doc.createTextNode(format_string); //"<h1>Hi there and greetings!</h1>");
        //child.innerHTML = "<h1>Hi there and greetings!</h1>";
        //child.setNodeValue(format_string);
        //child.appendChild(text);
        result.appendChild(page_response);
        return result;
    } else {
        String name = (String)params.get(GSParams.SYSTEM_MODULE_NAME);
        String type = (String)params.get(GSParams.SYSTEM_MODULE_TYPE);

        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
        logger.error("bad subaction type");
        Element page_response = this.doc.createElement(GSXML.RESPONSE_ELEM);
        result.appendChild(page_response);
    
        return result;
        }
    }

    Node response_message = this.mr.process(mr_request_message);
    
    result.appendChild(GSXML.duplicateWithNewName(this.doc, (Element)GSXML.getChildByTagName(response_message, GSXML.RESPONSE_ELEM), GSXML.RESPONSE_ELEM, true));
    return result;
    
    }

}