package com.ecyrd.jspwiki.plugin.i3g;

import java.util.Collection;
import java.util.Iterator;
import java.util.Map;


import com.ecyrd.jspwiki.WikiContext;
import com.ecyrd.jspwiki.WikiEngine;
import com.ecyrd.jspwiki.attachment.Attachment;
import com.ecyrd.jspwiki.attachment.AttachmentManager;
import com.ecyrd.jspwiki.plugin.PluginException;
import com.ecyrd.jspwiki.providers.ProviderException;

/**
 * Displays a list of all attachments of a page
 * usefull if you removed the attachments display 
 * in your template. So you still are able to
 * display attachments on some pages, where it 
 * seems to be important.
 * 
 * @param title - set the title of the attachments
 * @param info - sets the alt attribute of the paperclip icon
 * 
 * @author Christoph Sauer
 */
public class AttachmentList extends I3gWikiPlugin {

	public String execute(WikiContext context, Map params)
			throws PluginException {

		String title = getParameter(params, "title", "Attachments", false);
		String info = getParameter(params, "info", "Info on", false);

		String result = "";
		try {
			WikiEngine engine = context.getEngine();
			AttachmentManager mgr = engine.getAttachmentManager();
            Collection atts = mgr.listAttachments( context.getPage() );

            result = 
            "<p><b>"+ title +":</b>" +
			"<div class=\"attachments\" align=\"center\">" +
            "<table width=\"90%\">";
            
            if( atts == null ) {
                return "<tr><td>No attachments to display.</td></tr>";
            }

            Iterator iter = atts.iterator();
            while(iter.hasNext()) {
            	Attachment  att = (Attachment) iter.next();
            	
            	String src = context.getURL(WikiContext.ATTACH, att.getName());
            	String inf = context.getURL(WikiContext.INFO, att.getName());
            	String base = context.getEngine().getBaseURL();
            	
            	String link1 = "<a href=\"" + src + "\">" + att.getFileName() + "</a>";
            	String link2 = "<a href=\"" + inf + "\">" +
            	               "<img src=\"" + base + "images/attachment_big.png\" border=\"0\" alt=\"" + 
							   info + "\"" + att.getFileName() + "\"/></a>";
            	
	            result +=
	            		"<tr>" +
	                    "<td>" + link1 + "</td>" +
	                    "<td>" + link2 + "</td>" + 
	                    "<td>" + att.getSize()+ " bytes</td>" +
						"</tr>\n";
            }

		     result +=
             "</table>" +
             "</div></p>";
				     
			//Attachment att = mgr.getAttachmentInfo(context, src);
			
			
		} catch (ProviderException e) {
			throw new PluginException("Attachment info failed: "
					+ e.getMessage());
		}

		return result;
		
	}
	
}