package e4s.tutorial;

import e4s.html.BODY;
import e4s.html.E4CgiParams;
import e4s.html.E4Color;
import e4s.html.E4Message;
import e4s.html.E4Method;
import e4s.html.FONT;
import e4s.html.FORM;
import e4s.html.HTML;
import e4s.html.TABLE;
import e4s.html.input.extended.CHECKBOX;
import e4s.html.input.extended.E4InputFieldName;
import e4s.html.input.extended.E4ValidatorEMail;
import e4s.html.input.extended.E4ValidatorNoBlanks;
import e4s.html.input.extended.TEXTAREA;
import e4s.html.input.extended.TEXTFIELD;
import e4s.mail.E4SendMail;
import e4s.servlet.E4ModuleImplementation;


/**
 * Sending eMails from your servlet.
 *
 * {@tutorial Example_MailSend}
 */
public class Example_MailSend extends E4ModuleImplementation
{
	public static E4Method start = null;
	public static E4Method sendMail = null;
	// public static E4Method receiveMail = null;

	private final E4InputFieldName FIELD_TO = new E4InputFieldName("TO");
	private final E4InputFieldName FIELD_CC = new E4InputFieldName("CC");
	private final E4InputFieldName FIELD_SUBJ = new E4InputFieldName("SUBJ");
	private final E4InputFieldName FIELD_MSG = new E4InputFieldName("MSG");
	private final E4InputFieldName FIELD_PLAIN = new E4InputFieldName("PLAIN");

	
	public FORM makeForm( boolean init )
	{
		FORM form = new FORM("TESTFORM");
		
		TEXTFIELD fTo = form.TEXTFIELD(FIELD_TO,"To",40);
		fTo.setValidator(new E4ValidatorEMail(true));
		form.BR();
		
		TEXTFIELD fCc = form.TEXTFIELD(FIELD_CC,"Cc",40);
		fCc.setValidator(new E4ValidatorEMail(false));
		form.BR();

		CHECKBOX fPlain = form.CHECKBOX(FIELD_PLAIN,"Send as plain text");
		form.BR();

		TEXTFIELD fSubj = form.TEXTFIELD(FIELD_SUBJ,"Subject",60);
		fSubj.setValidator(new E4ValidatorNoBlanks());
		form.BR();

		TEXTAREA fMsg = form.TEXTAREA(FIELD_MSG,"E4Message",60,4);
		form.P();
		
		form.setAction(sendMail);
		
		form.FORM_Submit("Send");
		
		if (init)
		{
			fSubj.setValue("Testmail generated from the e4s tutorial");
			fMsg.setValue("Hi there, this is my message to you!");
			fPlain.setValue(false);
		}

		return form;
	}

	
	public void start( HTML html )
	{
		BODY body = html.BODY();
		body.Message("Send Mail Tutorial");
		
		FORM form = makeForm(true);
		body.addElement(form);
		
		body.P();
		
		// body.A(receiveMail).print("Receive");
	}
	
	
	public void sendMail( HTML html, E4CgiParams params )
	throws Exception      
	{
		BODY body = html.BODY();

		FORM form = makeForm(false);
		
		if (! form.validate(params,getServlet()))
		{
			body.Message(E4Message.ERROR,"Send Mail Tutorial - please correct the errors");
			body.addElement(form);
		}
		else
		{
			String to = params.get(FIELD_TO);
			String cc = params.get(FIELD_CC);
			String subj = params.get(FIELD_SUBJ);
			String msg = params.get(FIELD_MSG);
			boolean plain_text = params.getBool(FIELD_PLAIN);
			
			try
			{ 
				E4SendMail mail = new E4SendMail( to, cc );

				if (plain_text)
				{
					mail.sendPLAIN(subj,msg);
				}
				else
				{
					TABLE table = new TABLE(E4ID());
					table.setBorder();
					table.setBgColor(E4Color.LIGHT_YELLOW);
					table.TR().TD().FONT(FONT.ARIAL).B().print(subj);
					if (isok(msg))
						table.TR().TD().FONT(FONT.ARIAL).I().print(msg);
					table.TR().TD().IMG("http://java.sun.com/im/logo_java.gif");
					
					mail.sendHTML(subj,table,getServlet());
				}
					
				body.Message(E4Message.INFO,"E-mail message sent to " + to);
			}
			catch( Exception e )
			{
				body.Message(E4Message.ERROR,"Cannot send e-mail");
				body.P();
				body.SystemError(e);
			}
		}
	}
	
	
	/* public void receiveMail( HTML html, E4CgiParams params )
	throws Exception      
	{
		ReceiveMail mail = new ReceiveMail();
		mail.receive();
	} */
}