/*
 * RequestServlet.java
 *
 * Created on 4 de Março de 2005, 18:19
 */

package siprp.pagina;

import java.io.*;
import java.util.*;

import javax.mail.*;
import javax.mail.internet.*;
import javax.servlet.*;
import javax.servlet.http.*;

import org.apache.velocity.*;
import org.apache.velocity.app.*;
/**
 *
 * @author  psantos
 */
public class RequestServlet extends HttpServlet
{
	public void doPost( HttpServletRequest req, HttpServletResponse res )
	throws IOException
	{
		ServletOutputStream out = res.getOutputStream();
		res.setContentType( "text/html" );

		/*
		 parametros:
		 request_name
		 request_phone
		 request_email
		 request_details
		 */
		// recebe info de contacto
		Hashtable parameters = parseParameters( new Hashtable( req.getParameterMap() ) );

		// manda mail
		boolean success = sendMail( parameters );

		// mostra pagina correspondente
		out.println( showResultPage( success ) );
	}

	private String showResultPage( boolean success )
	{
		VelocityContext context = new VelocityContext();
		StringWriter output = new StringWriter();
		String template;
		if( success )
		{
			template = "pedido_enviado.html";
		}
		else
		{
			template = "pedido_nao_enviado.html";
		}
		try
		{
			Velocity.mergeTemplate( "mail/" + template, Velocity.ENCODING_DEFAULT, context, output );
			return output.toString();
		}
		catch( Exception e )
		{
			e.printStackTrace();
		}

		return null;
	}
	
	private boolean sendMail( Hashtable parameters )
	{
		String smtp_server = "localhost";
		//String from = "psantos@evolute.pt";
		String subject = "Pedido de informação através do site www.siprp.pt";
		String mailer = "Evolute Mailer";

		// Dados da form de pedido de informacao
		String name = ( String ) parameters.get( "request_name" );
		String phone = ( String ) parameters.get( "request_phone" );
		String email = ( String ) parameters.get( "request_email" );
		String details = ( String ) parameters.get( "request_details" );

		String destination = "psantos@evolute.pt";
		
		Properties props = System.getProperties();
		props.put( "mail.smtp.host", smtp_server );

		Session session = Session.getInstance( props, null );
		
		Message msg = new MimeMessage( session );
		try
		{
			VelocityContext context = new VelocityContext();
			StringWriter content = new StringWriter();

			msg.setFrom( new InternetAddress( email ) );
			msg.setRecipients( Message.RecipientType.TO, InternetAddress.parse( destination, true ) );
			msg.setSubject( subject );

			context.put( "name", name );
			context.put( "phone", phone );
			context.put( "email", email );
			context.put( "details", details );

			Velocity.mergeTemplate( "mail/pedido_informacao.txt", Velocity.ENCODING_DEFAULT, context, content );

			msg.setContent( content.toString(), "text/plain" );

			msg.setHeader( "X-Mailer", mailer );
			msg.setSentDate( new Date() );
			Transport.send( msg );

			return true;
		}
		catch( Exception e )
		{
			e.printStackTrace();
		}

		return false;
	}

	private String checkParameter( String parameter )
	{
		if( parameter != null && parameter.trim().length() > 0 )
		{
			return parameter.trim();
		}

		return null;
	}

	public Hashtable parseParameters( Hashtable parameters )
	{
		Hashtable tmp = new Hashtable();
		String[] element;
		String key;
		String new_element;
		for( Enumeration e = parameters.keys(); e.hasMoreElements(); )
		{
			key = ( String ) e.nextElement();
			element = ( String[] ) parameters.get( key );
			if( element != null )
			{
				new_element = checkParameter( element[ 0 ] );
				if( new_element != null )
				{
					tmp.put( key, new_element );
				}
			}
		}

		return tmp;
	}
}