package com.ecyrd.jspwiki.plugin.i3g;

import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.Vector;
import com.ecyrd.jspwiki.ReferenceManager;
import com.ecyrd.jspwiki.WikiContext;
import com.ecyrd.jspwiki.WikiEngine;
import com.ecyrd.jspwiki.WikiPage;
import com.ecyrd.jspwiki.plugin.PluginException;
import com.ecyrd.jspwiki.plugin.WikiPlugin;


public class WikiMap implements WikiPlugin{
	
    private ReferenceManager ref;
	private WikiEngine engine;
	private Vector references, pages;
  
	public String execute(WikiContext context, Map params) throws PluginException {
			                                            
        engine = context.getEngine();
        ref=engine.getReferenceManager();
        
        String width="300", height="300", ownwindow="off", 
               recursiondepth="10" ,zoom="50", locality="1",
               debugMode="off", ip;
        int allpages=0;
        
        String startpage=context.getPage().getName();
        allpages=engine.getPageCount();
        ip = context.getHttpRequest().getRemoteAddr();
        
			
		try{
        if(PluginUtil.getParameter(params, "startpage")!=null)startpage=PluginUtil.getParameter(params, "startpage");
        }
        catch(Exception e){}
        try{
        if(PluginUtil.getParameter(params, "width")!=null) width=PluginUtil.getParameter(params, "width");
        }
        catch(Exception e){}
        try{
        if(PluginUtil.getParameter(params, "height")!=null)height=PluginUtil.getParameter(params, "height");
        }
        catch(Exception e){}
        try{
        if(PluginUtil.getParameter(params, "ownwindow")!=null)ownwindow=PluginUtil.getParameter(params, "ownwindow");
        }
        catch(Exception e){}
        try{
        if(PluginUtil.getParameter(params, "recursiondepth")!=null) recursiondepth=PluginUtil.getParameter(params, "recursiondepth");
        }
        catch(Exception e){}
        try{
        if(PluginUtil.getParameter(params, "zoom")!=null)zoom=PluginUtil.getParameter(params, "zoom");
        }
        catch(Exception e){}
        try{
        if(PluginUtil.getParameter(params, "locality")!=null)locality=PluginUtil.getParameter(params, "locality");
        }
        catch(Exception e){}
        try{
        if(PluginUtil.getParameter(params, "debugMode")!=null)debugMode=PluginUtil.getParameter(params, "debugMode");
            }
        catch(Exception e){}
        
            
        try{
			pages = new Vector();
			references = new Vector();
		    setupWikiStructureTO(startpage,pages,references, 0);
            }
			catch (Exception e) {return "<b>Please reload this page!</b>";} 
			   
            
        try {
			return "<b> "+
					"<APPLET  "+                           
				     " code=\"org.wikiwizard.jspwiki.wikimap.WikiMapApplet\""+                           
					 " archive=\"applets/WikiMap.jar\""+                                                
				       " width=\""+width+"\""+         
				       " height=\""+height+"\">"+ 
				       "<PARAM name=\"startpage\" value=\""+startpage+"\">"+
				       "<PARAM name=\"ownwindow\" value=\""+ownwindow+"\">"+
				       "<PARAM name=\"recursiondepth\" value=\""+recursiondepth+"\">"+
				       "<PARAM name=\"zoom\" value=\""+zoom+"\">"+
				       "<PARAM name=\"locality\" value=\""+locality+"\">"+
				       "<PARAM name=\"allpages\" value=\""+String.valueOf(allpages)+"\">"+
				       "<PARAM name=\"debugMode\" value=\""+debugMode+"\">"+
				       "<PARAM name=\"ip\" value=\""+ip+"\">"+
				       "<PARAM name=\"pages\" value=\""+pages.toString()+"\">"+
				       "<PARAM name=\"references\" value=\""+references.toString()+"\">"+
				       " </APPLET></b>";
			} catch (Exception e) {
			throw new PluginException(e.getMessage());
		}
	}
	
	//**without Servlet
	public String[] linksTO(String pagename)
	{
		String backText;
		String[] test;
		try{
			backText="";
			Collection linksto = engine.getPageManager().getAllPages();
			Iterator iter = linksto.iterator();
			while(iter.hasNext())
			{
				WikiPage holder = (WikiPage) iter.next();
				Collection colholder = ref.findReferrers(holder.getName());
				if (colholder!=null&&colholder.contains(pagename))		
				{
						backText=backText+","+holder.getName();
			    }
			}
			
			
			if(backText!="")
			{
			test=backText.substring(1,backText.length()).split(",");
			return test;
			}
			
		}
			catch (Exception e){}
		return null;
		}
	
	
	
	public void setupWikiStructureTO(String startPage, Vector pages, Vector references, int rekDepth ) {
		//Pout.print("setupWikiStructureTO");
		String[] strPages = linksTO(startPage);

		System.out.println("add "+startPage);
		pages.add(startPage);
		if(strPages==null||rekDepth>=1000)
			return;
		for(int i=0; i<strPages.length; i++)
		{
			references.add(startPage.toLowerCase()+","+strPages[i].toLowerCase());
            if(!contains(pages, strPages[i]))
				setupWikiStructureTO(strPages[i], pages, references, rekDepth+1);
		}
	}
	
	
	private boolean contains(Vector pages, String page)
	{
		for(int j=0; j<pages.size(); j++)
		{
			if(((String)pages.get(j)).toLowerCase().equals(page.toLowerCase()))
				return true;
		}
		return false;
	}
}