package de.comu.wikiplugin;

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;

import java.util.Date;
import java.util.Map;
import java.util.Properties;

import java.io.BufferedReader;
import java.io.InputStreamReader;

import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.Flags.Flag;
import javax.mail.Multipart;
import javax.mail.Part;
import javax.mail.internet.MimeBodyPart;

/**
 * Computer Mutter GmbH
 * www.comu.de
 *
 * @author Wolfgang Mutter
 */
public class POPmailPlugin implements WikiPlugin
{
    public static final java.text.SimpleDateFormat DATETIMEFORMAT = new java.text.SimpleDateFormat ( "dd.MM.yyyy HH:mm:ss" );

    /**
     *  This is the main entry point for any plugin.  The parameters are parsed,
     *  and a special parameter called "_body" signifies the name of the plugin
     *  body, i.e. the part of the plugin that is not a parameter of
     *  the form "key=value".  This has been separated using an empty
     *  line.
     *  <P>
     *  Note that it is preferred that the plugin returns
     *  XHTML-compliant HTML (i.e. close all tags, use &lt;br /&gt;
     *  instead of &lt;br&gt;, etc.
     *
     *  @param context The current WikiContext.
     *  @param params  A Map which contains key-value pairs.  Any
     *                 parameter that the user has specified on the
     *                 wiki page will contain String-String
     *  parameters, but it is possible that at some future date,
     *  JSPWiki will give you other things that are not Strings.
     *
     *  @return HTML, ready to be included into the rendered page.
     *
     *  @throws PluginException In case anything goes wrong.
     */
    public String execute ( WikiContext context, Map params ) throws PluginException
    {
        try
        {
            WikiEngine engine = context.getEngine ();
            WikiPage page = engine.getPage ( context.getPage ().getName () );
            String pageData = engine.getPureText ( page );
            String msg ="";
            Message m = null;
            
            Session session = Session.getDefaultInstance ( new Properties () );
            Store store = session.getStore ( "pop3" );
            store.connect ( (String)params.get ("host"),(String)params.get ("user"),(String)params.get ("pass") );
            Folder folder = store.getFolder ( "INBOX" );
            folder.open ( Folder.READ_WRITE );
            
            Message message[] = folder.getMessages ();
            
            for ( int i = 0; i < message.length; i++ )
            {
                m = message[i];
                if (pageData.indexOf (""+m.getSentDate ())==-1)
                {
                    msg+="__"+m.getSubject ()+"__\\\\"+DATETIMEFORMAT.format (m.getSentDate ())+" "+m.getFrom ()[0]+"\\\\\n{{{";
                    
                    if(m.getContent() instanceof Multipart) 
                    {
                        Multipart mp = (Multipart) m.getContent();
            
                        for ( int j = 0; j < mp.getCount(); j++ )
                        {
                            Part part = mp.getBodyPart( j );
                            String disposition = part.getDisposition();
              
                            if ( disposition.equals("inline") )
                            {
                                MimeBodyPart mimePart = (MimeBodyPart)part;

                                if ( mimePart.isMimeType("text/plain") )
                                {
                                    BufferedReader in = new BufferedReader(
                                    new InputStreamReader(mimePart.getInputStream()) );

                                    for ( String line; (line=in.readLine()) != null; )
                                        msg+="\n"+ line +"\n";
                                        
                                }
                            }
                        }

                    } else 
                    {
                        msg+="\n"+ m.getContent()+"\n"; 
                    }
                    
                  // msg+="{{{"+m.getContent ().toString ()+"}}}----\n\n";
                  msg+="}}}----\n";
                  m.setFlag ( Flag.DELETED,true );
                }
            }
            
            folder.close ( true );
            store.close ();
            
            if( msg.length () > 0 )
            {
                pageData = msg+pageData;
                engine.saveText (context,pageData);
            }
            return "Letzte Aktualisierung: "+DATETIMEFORMAT.format (new Date ());
        }
        
        catch (Exception exp)
        {
            System.err.println (exp);
            throw new PluginException (exp.toString ());
        }
    }
}