/*
    * DavMail POP/IMAP/SMTP/CalDav/LDAP Exchange Gateway
    * Copyright (C) 2010  Mickael Guessant
    *
    * This program is free software; you can redistribute it and/or
    * modify it under the terms of the GNU General Public License
    * as published by the Free Software Foundation; either version 2
    * of the License, or (at your option) any later version.
    *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
   */
  package davmail.ui;
  
  import davmail.BundleMessage;
  import davmail.ui.browser.DesktopBrowser;
  import davmail.ui.tray.DavGatewayTray;
  
  import javax.swing.*;
  import java.awt.*;
  import java.awt.event.ActionEvent;
  
  /**
   * Edit Caldav scheduling notifications.
   */
  public class NotificationDialog extends JDialog {
  
      protected boolean sendNotification;
      protected boolean hasRecipients;
  
      protected JTextField toField;
      protected JTextField ccField;
      protected JTextField subjectField;
      protected JEditorPane bodyField;
  
      protected void addRecipientComponent(JPanel panel, String label, JTextField textField, String toolTipText) {
          JLabel fieldLabel = new JLabel(label);
          fieldLabel.setHorizontalAlignment(SwingConstants.RIGHT);
          fieldLabel.setVerticalAlignment(SwingConstants.CENTER);
          JPanel innerPanel = new JPanel();
          innerPanel.setLayout(new BoxLayout(innerPanel, BoxLayout.X_AXIS));
          innerPanel.setBorder(BorderFactory.createEmptyBorder(1, 1, 1, 1));
          innerPanel.setAlignmentX(Component.RIGHT_ALIGNMENT);
          innerPanel.add(fieldLabel);
          innerPanel.add(textField);
          panel.add(innerPanel);
          if (toolTipText != null) {
              fieldLabel.setToolTipText(toolTipText);
              textField.setToolTipText(toolTipText);
          }
      }
  
      /**
       * Notification dialog to let user edit message body or cancel notification.
       * Called from EWS => no recipients information
       *
       * @param subject     notification subject
       * @param description notification description
       */
      public NotificationDialog(String subject, String description) {
          this(null, null, subject, description);
      }
  
      /**
       * Notification dialog to let user edit message body or cancel notification.
       *
       * @param to          main recipients
       * @param cc          copy recipients
       * @param subject     notification subject
       * @param description notification description
       */
      public NotificationDialog(String to, String cc, String subject, String description) {
          hasRecipients = to != null || cc != null;
          setModal(true);
          setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
          setTitle(BundleMessage.format("UI_CALDAV_NOTIFICATION"));
          try {
              setIconImages(DavGatewayTray.getFrameIcons());
          } catch (NoSuchMethodError error) {
              DavGatewayTray.debug(new BundleMessage("LOG_UNABLE_TO_SET_ICON_IMAGE"));
          }
  
          JPanel mainPanel = new JPanel();
          // add help (F1 handler)
          mainPanel.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(KeyStroke.getKeyStroke("F1"),
                  "help");
          mainPanel.getActionMap().put("help", new AbstractAction() {
              public void actionPerformed(ActionEvent e) {
                  DesktopBrowser.browse("https://davmail.sourceforge.net");
              }
          });
  
          mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS));
         mainPanel.add(getRecipientsPanel());
         mainPanel.add(getBodyPanel(description));
 
         JPanel recipientsPanel = getRecipientsPanel();
         if (to != null) {
             toField.setText(to);
         }
         if (cc != null) {
             ccField.setText(cc);
         }
         if (subject != null) {
             subjectField.setText(subject);
         }
         add(BorderLayout.NORTH, recipientsPanel);
         JPanel bodyPanel = getBodyPanel(description);
         add(BorderLayout.CENTER, bodyPanel);
         bodyField.setPreferredSize(recipientsPanel.getPreferredSize());
 
         JPanel buttonPanel = new JPanel();
         JButton cancel = new JButton(BundleMessage.format("UI_BUTTON_CANCEL"));
         JButton send = new JButton(BundleMessage.format("UI_BUTTON_SEND"));
 
         send.addActionListener(evt -> {
             sendNotification = true;
             setVisible(false);
         });
 
         cancel.addActionListener(evt -> {
             // nothing to do, just hide
             setVisible(false);
         });
 
         buttonPanel.add(send);
         buttonPanel.add(cancel);
 
         add(BorderLayout.SOUTH, buttonPanel);
 
         pack();
         setResizable(true);
         // center frame
         setLocation(getToolkit().getScreenSize().width / 2 -
                         getSize().width / 2,
                 getToolkit().getScreenSize().height / 2 -
                         getSize().height / 2);
         setAlwaysOnTop(true);
         setVisible(true);
     }
 
     protected JPanel getRecipientsPanel() {
         JPanel recipientsPanel = new JPanel();
         recipientsPanel.setLayout(new BoxLayout(recipientsPanel, BoxLayout.Y_AXIS));
         recipientsPanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
 
         if (hasRecipients) {
             toField = new JTextField("", 40);
             addRecipientComponent(recipientsPanel, BundleMessage.format("UI_TO"), toField,
                     BundleMessage.format("UI_TO_HELP"));
             ccField = new JTextField("", 40);
             addRecipientComponent(recipientsPanel, BundleMessage.format("UI_CC"), ccField,
                     BundleMessage.format("UI_CC_HELP"));
         }
         subjectField = new JTextField("", 40);
         if (!hasRecipients) {
             subjectField.setEditable(false);
         }
         addRecipientComponent(recipientsPanel, BundleMessage.format("UI_SUBJECT"), subjectField,
                 BundleMessage.format("UI_SUBJECT_HELP"));
         return recipientsPanel;
     }
 
     protected JPanel getBodyPanel(String description) {
         JPanel bodyPanel = new JPanel();
         bodyPanel.setLayout(new BoxLayout(bodyPanel, BoxLayout.Y_AXIS));
         bodyPanel.setBorder(BorderFactory.createTitledBorder(BundleMessage.format("UI_NOTIFICATION_BODY")));
 
         bodyField = new JTextPane();
         bodyField.setText(description);
         //HTMLEditorKit htmlEditorKit = new HTMLEditorKit();
         //bodyField.setEditorKit(htmlEditorKit);
         //bodyField.setContentType("text/html");
 
         bodyPanel.add(new JScrollPane(bodyField));
         return bodyPanel;
     }
 
     /**
      * Cancel notification flag.
      *
      * @return false if user chose to cancel notification
      */
     public boolean getSendNotification() {
         return sendNotification;
     }
 
     /**
      * Get edited recipients.
      *
      * @return recipients string
      */
     public String getTo() {
         return toField.getText();
     }
 
     /**
      * Get edited copy recipients.
      *
      * @return copy recipients string
      */
     public String getCc() {
         return ccField.getText();
     }
 
     /**
      * Get edited subject.
      *
      * @return subject
      */
     public String getSubject() {
         return subjectField.getText();
     }
 
     /**
      * Get edited body.
      *
      * @return edited notification body
      */
     public String getBody() {
         return bodyField.getText();
     }
 }