package com.nilhcem.fakesmtp.gui;

 import com.nilhcem.fakesmtp.core.ArgsHandler;

 import com.nilhcem.fakesmtp.core.Configuration;

 import com.nilhcem.fakesmtp.core.exception.UncaughtExceptionHandler;

 import com.nilhcem.fakesmtp.model.UIModel;

 import com.nilhcem.fakesmtp.server.SMTPServerHandler;

 import org.slf4j.LoggerFactory;

 import javax.swing.JFrame;

 import java.awt.Dimension;

 import java.awt.Toolkit;

 import java.awt.event.WindowAdapter;

 import java.awt.event.WindowEvent;

 import java.io.IOException;

 /**

  * Provides the main window of the application.

  *

  * @author Nilhcem

  * @since 1.0

  */

 public final class MainFrame extends WindowAdapter {

         private final JFrame mainFrame = new JFrame(Configuration.INSTANCE.get("application.title"));

         private final MenuBar menu = new MenuBar();

         private final MainPanel panel = new MainPanel(menu);

         /**

          * Creates the main window and makes it visible.

          * <p>

          * First, assigns the main panel to the default uncaught exception handler to display exceptions in this panel.<br><br>

          * Before creating the main window, the application will have to set some elements, such as:

      * </p>

          * <ul>

          *   <li>The minimum and default size;</li>

          *   <li>The menu bar and the main panel;</li>

          *   <li>An icon image;</li>

          *   <li>A shutdown hook to stop the server, once the main window is closed.</li>

          * </ul><br>

      * <p>

          * The icon of the application is a modified version from the one provided in "{@code WebAppers.com}"

          * <i>(Creative Commons Attribution 3.0 License)</i>.

      * </p>

          */

         public MainFrame() {

                 ((UncaughtExceptionHandler) Thread.getDefaultUncaughtExceptionHandler()).setParentComponent(panel.get());

                 Dimension frameSize = new Dimension(Integer.parseInt(Configuration.INSTANCE.get("application.min.width")),

                         Integer.parseInt(Configuration.INSTANCE.get("application.min.height")));

                 mainFrame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

                 mainFrame.addWindowListener(this); // for catching windowClosing event

                 mainFrame.setSize(frameSize);

                 mainFrame.setMinimumSize(frameSize);

                 mainFrame.setJMenuBar(menu.get());

                 mainFrame.getContentPane().add(panel.get());

                 mainFrame.setLocationRelativeTo(null); // Center main frame

                 mainFrame.setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().

                         getResource(Configuration.INSTANCE.get("application.icon.path"))));

                 // Add shutdown hook to stop server if enabled

                 Runtime.getRuntime().addShutdownHook(new Thread() {

                         public void run() {

                                 SMTPServerHandler.INSTANCE.stopServer();

                         }

                 });

                 // Restore last saved smtp port (if not overridden by the user)

                 String smtpPort = ArgsHandler.INSTANCE.getPort();

                 if (smtpPort == null) {

                         smtpPort = Configuration.INSTANCE.get("smtp.default.port");

                 }

                 panel.getPortText().setText(smtpPort);

                 // Restore last emails directory (if not overridden by the user)

                 String emailsDir = ArgsHandler.INSTANCE.getOutputDirectory();

                 if (emailsDir == null) {

                         emailsDir = Configuration.INSTANCE.get("emails.default.dir");

                 }

                 if (emailsDir != null && !emailsDir.isEmpty()) {

                         panel.getSaveMsgTextField().get().setText(emailsDir);

                         UIModel.INSTANCE.setSavePath(emailsDir);

                 }

                 mainFrame.setVisible(true);

         }

         @Override

         public void windowClosing(WindowEvent e) {

                 // Save configuration

                 Configuration.INSTANCE.set("smtp.default.port", panel.getPortText().get().getText());

                 Configuration.INSTANCE.set("emails.default.dir", panel.getSaveMsgTextField().get().getText());

                 try {

                         Configuration.INSTANCE.saveToUserProfile();

                 } catch (IOException ex) {

                         LoggerFactory.getLogger(MainFrame.class).error("Could not save configuration", ex);

                 }

                 // Check for SMTP server running and stop it

                 if (SMTPServerHandler.INSTANCE.getSmtpServer().isRunning()) {

                         SMTPServerHandler.INSTANCE.getSmtpServer().stop();

                 }

                 mainFrame.dispose();

         }

 }