package org.gcube.portlets.user.moving;

import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.PortletException;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

import org.gcube.common.portal.PortalContext;

import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.util.bridges.mvc.MVCPortlet;

/**
 * Portlet implementation class CompileForm
 */
public class CompileForm extends MVCPortlet {
	private static com.liferay.portal.kernel.log.Log _log = LogFactoryUtil.getLog(CompileForm.class);
	private static final String MAIL_FROM = "MOVING Gateway <moving@d4science.org>";
	private static final String MAIL_SUBJECT = "MOVING EU Multi-Actor Platform: email confirmation";
	private static final String MAIL_BODY = "Dear Sir/Madam,\n"
			+ "Thank you for expressing your interest to join the MOVING EU-level Multi-Actor Platform (MAP). The MOVING team will carefully review the information provided and assess the suitability of your involvement to form a dynamic and relevant community.\n"
			+ "Please receive below a copy of the information submitted. \n"
			+ "\n"
			+ "Best regards,\n"
			+ "MOVING team\n";	

	private String mailServiceHost = "localhost";
	private String mailServicePort = "25";
	@Override
	public void render(RenderRequest renderRequest, RenderResponse renderResponse) {
		Connection conn = null;
		try {
			conn = DatabaseConnection.getInstance("/"+PortalContext.getConfiguration().getInfrastructureName()).getConnection();
			_log.info("Trying queries for getting combo values from DB");
			List<String> organisation_types = getOrganisationTypes(conn);
			List<String> main_motivations = getMainMotivations(conn);
			List<String> areas_of_expertise = getAreasOfExpertise(conn);
			List<String> degrees_of_participation = getDgreesOfParticipation(conn);	
			_log.info("Succesfully got combo values from DB, organisation_types found: " +organisation_types.size());
			renderRequest.setAttribute("organisation_types", organisation_types);
			renderRequest.setAttribute("main_motivations", main_motivations);
			renderRequest.setAttribute("areas_of_expertise", areas_of_expertise);
			renderRequest.setAttribute("degrees_of_participation", degrees_of_participation);
			super.render(renderRequest, renderResponse);		
		} catch (Exception e) {
			_log.error("Something wrong with Databaseconnection or with queries while getting combo types", e);
		}
	}

	public void submittedForm(ActionRequest actionRequest, ActionResponse actionResponse) throws IOException, PortletException {

		String name =  actionRequest.getParameter("name"); 
		String surname =  actionRequest.getParameter("surname"); 
		String organisation =  actionRequest.getParameter("organisation"); 
		String organisationType =  actionRequest.getParameter("organisationType"); 
		String emailAddress =  actionRequest.getParameter("emailAddress"); 
		String[] itemsAreaOfExpertiseSelectValues =  actionRequest.getParameterValues("areaOfExpertiseSelect"); 
		String areaOfExpertise = "";
		for (int i = 0; i < itemsAreaOfExpertiseSelectValues.length; i++) {
			areaOfExpertise += itemsAreaOfExpertiseSelectValues[i];
			areaOfExpertise += "; ";
		}
		String country =  actionRequest.getParameter("country"); 
		String participatedInActivitiesString =  (String) actionRequest.getParameter("participatedInActivities"); 
		boolean participatedInActivities = Boolean.parseBoolean(participatedInActivitiesString);
		String mainMotivation =  actionRequest.getParameter("mainMotivation"); 
		String textareaMotivation =  actionRequest.getParameter("textareaMotivation"); 
		String elaborated_expertise =  actionRequest.getParameter("textareaExperience"); 
		String degree_of_participation =  actionRequest.getParameter("commitment"); 
		_log.debug("name:" + name);
		_log.debug("surname:" + surname);
		_log.debug("organisation:" + organisation);
		_log.debug("organisationType:" + organisationType);
		_log.debug("email:" + emailAddress);
		_log.debug("country:" + country);
		_log.debug("participatedInActivities:" + participatedInActivities);
		_log.debug("mainMotivation:" + mainMotivation);
		_log.debug("textareaMotivation:\n" + textareaMotivation+"\n");
		_log.debug("itemsAreaOfExpertise (Multi):\n");
		for (int i = 0; i < itemsAreaOfExpertiseSelectValues.length; i++) {
			_log.debug(itemsAreaOfExpertiseSelectValues[i]);
		}
		_log.debug("textareaExperience:\n" + elaborated_expertise+"\n");
		_log.debug("degrees_of_participation: "+ degree_of_participation);
		_log.info("Got form compiled, inserting in DB.");
		try {
			Connection conn = DatabaseConnection.getInstance("/"+PortalContext.getConfiguration().getInfrastructureName()).getConnection();
			String insertTableSQL = "INSERT INTO forms(name, surname, organisation, organisation_type, email, "
					+ "country, activities_participation, main_motivation, elaborated_motivation, area_of_expertise, "
					+ "elaborated_expertise, degree_of_participation, data_management, processed_form, user_accepted) "
					+ "VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)";

			PreparedStatement preparedStatement = conn.prepareStatement(insertTableSQL);
			preparedStatement.setString(1, name);
			preparedStatement.setString(2, surname);
			preparedStatement.setString(3, organisation);
			preparedStatement.setString(4, organisationType);
			preparedStatement.setString(5, emailAddress);
			preparedStatement.setString(6, country);
			preparedStatement.setBoolean(7, participatedInActivities);
			preparedStatement.setString(8, mainMotivation);
			preparedStatement.setString(9, textareaMotivation);
			preparedStatement.setString(10, areaOfExpertise);
			preparedStatement.setString(11, elaborated_expertise);
			preparedStatement.setString(12, degree_of_participation);
			preparedStatement.setBoolean(13, true); //data_management
			preparedStatement.setBoolean(14, false); //processed_form
			preparedStatement.setBoolean(15, false); //user_accepted
			// execute insert SQL stetement
			preparedStatement .executeUpdate();
			_log.info("Inserting in DB done, sending confirmation to user and notification to managers via email");
			
			Properties props = System.getProperties();
			Session session = null;
			props.put("mail.smtp.host", mailServiceHost);
			props.put("mail.smtp.port", mailServicePort);
			//use localhost (probaly postfix instance)
			session = Session.getDefaultInstance(props);
			
			sendEmailConfirmationToUser(props, session, emailAddress);
			sendEmailNotificationToVREManagers(props, session, emailAddress);
		} catch (Exception e) {
			_log.error("Some error while trying to insert form");
			e.printStackTrace();
		}
	}

	private void sendEmailConfirmationToUser(Properties props, Session session, String emailadress) throws AddressException, MessagingException {
		_log.info("Sending confirmation to user");
		Message message = new MimeMessage(session);
		message.setFrom(new InternetAddress(MAIL_FROM));
		message.setRecipients(
		  Message.RecipientType.TO, InternetAddress.parse(emailadress));
		message.setSubject(MAIL_SUBJECT);
	    message.setText(MAIL_BODY);
	    // Send message
	    Transport.send(message);
	    _log.info("Sending confirmation email done");
	}
	
	private void sendEmailNotificationToVREManagers(Properties props, Session session, String emailadress) {
		
	}
	
	private static List<String> getOrganisationTypes(Connection conn) throws Exception {
		_log.debug("getting organisation_types ");
		List<String> toReturn = new ArrayList<>();
		String selectSQL = "SELECT * FROM organisation_types";
		PreparedStatement preparedStatement = conn.prepareStatement(selectSQL);
		ResultSet rs = preparedStatement.executeQuery();
		while (rs.next()) {
			String toAdd = rs.getString("combo_value");
			_log.debug("Adding organisation_types" + toAdd);
			toReturn.add(toAdd);
		}
		return toReturn;
	}

	private static List<String> getMainMotivations(Connection conn) throws Exception {
		_log.debug("getting main_motivations ");
		List<String> toReturn = new ArrayList<>();
		String selectSQL = "SELECT * FROM main_motivations";
		PreparedStatement preparedStatement = conn.prepareStatement(selectSQL);
		ResultSet rs = preparedStatement.executeQuery();
		while (rs.next()) {
			String toAdd = rs.getString("combo_value");
			_log.debug("Adding main_motivations" + toAdd);
			toReturn.add(toAdd);
		}
		return toReturn;
	}

	private static List<String> getAreasOfExpertise(Connection conn) throws Exception {
		_log.debug("getting areas_of_expertise ");
		List<String> toReturn = new ArrayList<>();
		String selectSQL = "SELECT * FROM areas_of_expertise";
		PreparedStatement preparedStatement = conn.prepareStatement(selectSQL);
		ResultSet rs = preparedStatement.executeQuery();
		while (rs.next()) {
			String toAdd = rs.getString("combo_value");
			_log.debug("Adding areas_of_expertise" + toAdd);
			toReturn.add(toAdd);
		}
		return toReturn;
	}

	private static List<String> getDgreesOfParticipation(Connection conn) throws Exception {
		_log.debug("getting degrees_of_participation ");
		List<String> toReturn = new ArrayList<>();
		String selectSQL = "SELECT * FROM degrees_of_participation";
		PreparedStatement preparedStatement = conn.prepareStatement(selectSQL);
		ResultSet rs = preparedStatement.executeQuery();
		while (rs.next()) {
			String toAdd = rs.getString("combo_value");
			_log.debug("Adding degrees_of_participation" + toAdd);
			toReturn.add(toAdd);
		}
		return toReturn;
	}


}