/**************************************************************
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import java.util.Vector;
import com.sun.star.script.framework.runtime.XScriptContext;


public class PostNewsgroup extends JFrame
{

	// Post to newsgroup objects
	private NewsGroup[] subscribedNewsgroups = null;
	private XScriptContext xscriptcontext = null;

	private final int FRAMEX = 300;
	private final int FRAMEY = 300;
	private final int TEXTBOXWIDTH = 300;
	private final int TEXTBOXHEIGHT = 24;
	private final int TEXTAREAHEIGHT = 70;
	private final int BUTTONWIDTH = 80;
	private final int BUTTONHEIGHT = 30;

	private PostNewsgroup window = null;
	private JComboBox newsgroupComboBox = null;
	private JTextField hostTextField = null;
	private JTextField replyTextField = null;
	private JTextField subjectTextField = null;
	private JTextArea commentTextArea = null;
	private JRadioButton officeHtmlButton = null;
	private JRadioButton officeButton = null;
	private JRadioButton htmlButton = null;
	private JButton postButton = null;
	private JButton cancelButton = null;

	// JFrame for launch progress dialog
	private StatusWindow statusWindow = null;
	private String statusLine = "";

	// Tool tip text
	private final String newsgroupText = "Newsgroup name";
	private final String hostText = "Newsgroup host/server name";
	private final String replyText = "Email address to reply to";
	private final String subjectText = "Subject title for the mail";
	private final String commentText = "Additional comment on mail";
	private final String officeHtmlText = "Post as both Office and HTML attachments";
	private final String officeText = "Post as Office attachment only";
	private final String htmlText = "Post as HTML attachment only";
	private final String postText = "Post to newsgroup";
	private final String cancelText = "Cancel post to newsgroup";


	public void post( XScriptContext xsc )
	{
		xscriptcontext = xsc;
		window = this;

		// create mailcap and mimetypes files (fix for classloader problem)
		MimeConfiguration.createFiles( xscriptcontext );

		this.setTitle( "Post Document To Newsgroup" );
		this.setLocation( FRAMEX, FRAMEY );

		this.addFocusListener( new FocusAdapter()
		{
			public void focusGained( FocusEvent event )
			{
				System.out.println( "Focus gained" );
				window.update( window.getGraphics() );
			}

			public void focusLost( FocusEvent event )
                        {
				System.out.println( "Focus lost" );
                        }
		});

		Container container = getContentPane();
		container.setLayout( new GridBagLayout() );
		GridBagConstraints constraints = new GridBagConstraints();
		constraints.fill = GridBagConstraints.BOTH;

		JPanel labelPanel = constructLabelPanel();
		JPanel textPanel = constructTextPanel();
		JPanel optionPanel = constructOptionPanel();
		JPanel buttonPanel = constructButtonPanel();

		constraints.gridx = 0;
		constraints.gridy = 0;
		constraints.gridwidth = 1;
		constraints.gridheight = 3;
		constraints.insets = new Insets( 15, 15, 5, 5 );
		container.add( labelPanel, constraints );

		constraints.gridx = 1;
		constraints.gridy = 0;
		constraints.gridwidth = 4;
		constraints.gridheight = 3;
		constraints.insets = new Insets( 15, 5, 5, 15 );
		container.add( textPanel, constraints );

		constraints.gridx = 0;
		constraints.gridy = 3;
		constraints.gridwidth = 5;
		constraints.gridheight = 1;
		constraints.insets = new Insets( 5, 15, 5, 15 );
		container.add( optionPanel, constraints );

		constraints.gridx = 0;
		constraints.gridy = 4;
		constraints.gridwidth = 5;
		constraints.gridheight = 1;
		constraints.insets = new Insets( 5, 5, 5, 5 );
		container.add( buttonPanel, constraints );

		this.pack();
		this.setResizable( false );
		this.setVisible( true );
	}


	private JPanel constructLabelPanel()
	{
		JLabel newsgroupLabel = new JLabel( "Newsgroup:" );
		JLabel hostLabel = new JLabel( "Host:" );
		JLabel replyLabel = new JLabel( "Reply:" );
		JLabel subjectLabel = new JLabel( "Subject:" );
		JLabel commentLabel = new JLabel( "Comment:" );

		newsgroupLabel.setToolTipText( newsgroupText );
		hostLabel.setToolTipText( hostText );
		replyLabel.setToolTipText( replyText );
		subjectLabel.setToolTipText( subjectText );
		commentLabel.setToolTipText( commentText );

		JPanel newsgroupPanel = new JPanel();
		newsgroupPanel.setLayout( new BorderLayout() );
		newsgroupPanel.add( newsgroupLabel, "West" );
		JPanel hostPanel = new JPanel();
		hostPanel.setLayout( new BorderLayout() );
		hostPanel.add( hostLabel, "West" );
		JPanel replyPanel = new JPanel();
		replyPanel.setLayout( new BorderLayout() );
		replyPanel.add( replyLabel, "West" );
		JPanel subjectPanel = new JPanel();
		subjectPanel.setLayout( new BorderLayout() );
		subjectPanel.add( subjectLabel, "West" );
		JPanel commentPanel = new JPanel();
		commentPanel.setLayout( new BorderLayout() );
		commentPanel.add( commentLabel, "West" );
		JPanel emptyPanel = new JPanel();

		final int labelWidth = 80;
		newsgroupPanel.setPreferredSize( new Dimension( labelWidth, TEXTBOXHEIGHT ) );
		hostPanel.setPreferredSize( new Dimension( labelWidth, TEXTBOXHEIGHT ) );
		replyPanel.setPreferredSize( new Dimension( labelWidth, TEXTBOXHEIGHT ) );
		subjectPanel.setPreferredSize( new Dimension( labelWidth, TEXTBOXHEIGHT ) );
		commentPanel.setPreferredSize( new Dimension( labelWidth, TEXTBOXHEIGHT ) );

		JPanel panel = new JPanel();
		panel.setLayout( new GridBagLayout() );
		GridBagConstraints constraints = new GridBagConstraints();
		constraints.fill = GridBagConstraints.BOTH;
		constraints.insets = new Insets( 5, 5, 5, 5 );

		constraints.gridx = 0;
		constraints.gridy = 0;
		constraints.gridwidth = 1;
		constraints.gridheight = 1;
		constraints.weightx = constraints.weighty = 0.0;
		panel.add( newsgroupPanel, constraints );

		constraints.gridx = 0;
		constraints.gridy = 1;
		constraints.gridwidth = 1;
		constraints.gridheight = 1;
		panel.add( hostPanel, constraints );

		constraints.gridx = 0;
		constraints.gridy = 2;
		constraints.gridwidth = 1;
		constraints.gridheight = 1;
		panel.add( replyPanel, constraints );

		constraints.gridx = 0;
		constraints.gridy = 3;
		constraints.gridwidth = 1;
		constraints.gridheight = 1;
		panel.add( subjectPanel, constraints );

		constraints.gridx = 0;
		constraints.gridy = 4;
		constraints.gridwidth = 1;
		constraints.gridheight = 1;
		panel.add( commentPanel, constraints );

		constraints.gridx = 0;
		constraints.gridy = 5;
		constraints.gridwidth = 1;
		constraints.gridheight = 1;
		constraints.weightx = constraints.weighty = 1.0;
		panel.add( emptyPanel, constraints );

		return panel;
	}


	private JPanel constructTextPanel()
	{
		hostTextField = new JTextField();
                hostTextField.setPreferredSize( new Dimension( TEXTBOXWIDTH, TEXTBOXHEIGHT ) );
                hostTextField.setToolTipText( hostText );
		hostTextField.setBorder( new EtchedBorder() );

		//optionPanel.setBorder( new TitledBorder( new EtchedBorder(), "Document Format" ) );
		newsgroupComboBox = getNewsgroupCombo();

		replyTextField = new JTextField();
		replyTextField.setPreferredSize( new Dimension( TEXTBOXWIDTH, TEXTBOXHEIGHT ) );
		replyTextField.setToolTipText( replyText );
		replyTextField.setBorder( new EtchedBorder() );

		subjectTextField = new JTextField();
		subjectTextField.setPreferredSize( new Dimension( TEXTBOXWIDTH, TEXTBOXHEIGHT ) );
		subjectTextField.setToolTipText( subjectText );
		subjectTextField.setBorder( new EtchedBorder() );

		commentTextArea = new JTextArea();
		commentTextArea.setPreferredSize( new Dimension( TEXTBOXWIDTH, TEXTAREAHEIGHT ) );
		commentTextArea.setToolTipText( commentText );
		commentTextArea.setBorder( new EtchedBorder() );

		JPanel panel = new JPanel();
		panel.setLayout( new GridBagLayout() );
		GridBagConstraints constraints = new GridBagConstraints();
		constraints.fill = GridBagConstraints.BOTH;
		constraints.insets = new Insets( 5, 5, 5, 5 );

		constraints.gridx = 0;
		constraints.gridy = 0;
		constraints.gridwidth = 1;
		constraints.gridheight = 1;
		panel.add( newsgroupComboBox, constraints );

		constraints.gridx = 0;
		constraints.gridy = 1;
		constraints.gridwidth = 1;
		constraints.gridheight = 1;
		panel.add( hostTextField, constraints );

		constraints.gridx = 0;
		constraints.gridy = 2;
		constraints.gridwidth = 1;
		constraints.gridheight = 1;
		panel.add( replyTextField, constraints );

		constraints.gridx = 0;
		constraints.gridy = 3;
		constraints.gridwidth = 1;
		constraints.gridheight = 1;
		panel.add( subjectTextField, constraints );

		constraints.gridx = 0;
		constraints.gridy = 4;
		constraints.gridwidth = 1;
		constraints.gridheight = 2;
		panel.add( commentTextArea, constraints );

		return panel;
	}


	private JComboBox getNewsgroupCombo()
	{
		newsgroupComboBox = new JComboBox();
		//newsgroupComboBox.setBorder( new EtchedBorder() );

   		newsgroupComboBox.addActionListener(new ActionListener()
   		{
    			public void actionPerformed(ActionEvent e)
    			{
				// when newsgroup is selected
				if( subscribedNewsgroups != null )
				{
					int position = newsgroupComboBox.getSelectedIndex();
					if( position != -1 )
					{
						hostTextField.setText( subscribedNewsgroups[ position ].getHostName() );
						newsgroupComboBox.setToolTipText( "Newsgroup name: " + subscribedNewsgroups[ position ].getNewsgroupName() + "  (Host name: " + subscribedNewsgroups[ position ].getHostName() + ")" );
					}
				}
			}
		});

		NewsGroup groupToSend = null;
		SubscribedNewsgroups newsgroups = new SubscribedNewsgroups();
		subscribedNewsgroups = newsgroups.getNewsGroups();

		// Test for no .mozilla or no subscribed newsgroups
		// subscribedNewsgroups = null;

		if( subscribedNewsgroups == null )
		{
			//System.out.println( "Couldn't find any subscribed newsgroups in .mozilla" );
			JOptionPane.showMessageDialog( window, "No subscribed newsgroups found in mozilla/netscape profile \nPlease enter newsgroup and host name",
							"Newsgroups Information", JOptionPane.INFORMATION_MESSAGE );
		}
		else
		{
			// Copy all newsgroups into a vector for comparison
			// Alter entries (to include host name) if duplication is found
			Vector vector = new Vector( subscribedNewsgroups.length );
			for(int i=0; i < subscribedNewsgroups.length; i++ )
			{
				vector.add( subscribedNewsgroups[i].getNewsgroupName() );
			}
			// Compare and alter
			for(int i=0; i < subscribedNewsgroups.length; i++ )
			{
				// check if combo box already has a newsgroup with same name
				// then add host name to differentiate
				for(int j=0; j < subscribedNewsgroups.length; j++ )
				{
					if( j != i && subscribedNewsgroups[j].getNewsgroupName().equalsIgnoreCase( subscribedNewsgroups[i].getNewsgroupName() ) )
					{
						vector.set( j, subscribedNewsgroups[j].getNewsgroupName() + "  (" + subscribedNewsgroups[j].getHostName() + ")" );
						vector.set( i, subscribedNewsgroups[i].getNewsgroupName() + "  (" + subscribedNewsgroups[i].getHostName() + ")" );
					}
				}
			}
			// Copy converted newsgroups from vector to combo box
			for(int i=0; i < subscribedNewsgroups.length; i++ )
			{
				newsgroupComboBox.addItem( vector.elementAt(i) );
			}
		}// else

		newsgroupComboBox.setPreferredSize( new Dimension( TEXTBOXWIDTH, TEXTBOXHEIGHT ) );
		newsgroupComboBox.setEditable( true );

		return newsgroupComboBox;
	}


	private JPanel constructOptionPanel()
	{
		officeHtmlButton = new JRadioButton( "Office and HTML", true );
		officeHtmlButton.setToolTipText( officeHtmlText );

		officeButton = new JRadioButton( "Office" );
		officeButton.setToolTipText( officeText );

		htmlButton = new JRadioButton( "HTML" );
		htmlButton.setToolTipText( htmlText );

		JRadioButton[] rbuttons = { officeHtmlButton, officeButton, htmlButton };
		ButtonGroup radioButtonGroup = new ButtonGroup();
		for( int i=0; i < rbuttons.length; i++ )
		{
			radioButtonGroup.add( rbuttons[i] );
		}

		JPanel optionPanel = new JPanel();
		//optionPanel.setLayout( new GridLayout( 1, 3, 20, 0 ) );
		optionPanel.setBorder( new TitledBorder( new EtchedBorder(), "Document Format" ) );
		optionPanel.setLayout( new GridBagLayout() );
		GridBagConstraints constraints = new GridBagConstraints();
		constraints.fill = GridBagConstraints.BOTH;

		constraints.gridx = 0;
                constraints.gridy = 0;
                constraints.gridwidth = 1;
                constraints.gridheight = 1;
		constraints.insets = new Insets( 5, 5, 5, 30 );
                optionPanel.add( officeHtmlButton, constraints );

		constraints.gridx = 1;
                constraints.gridy = 0;
                constraints.gridwidth = 1;
                constraints.gridheight = 1;
		constraints.insets = new Insets( 5, 20, 5, 30 );
                optionPanel.add( officeButton, constraints );

		constraints.gridx = 2;
                constraints.gridy = 0;
                constraints.gridwidth = 1;
                constraints.gridheight = 1;
		constraints.insets = new Insets( 5, 20, 5, 5 );
                optionPanel.add( htmlButton, constraints );

                return optionPanel;
	}


	public boolean sendingActions()
	{
			// posting actions
			// Validate the data
			if( isValidData() )
			{
				// Create status window
				StatusWindow statusWindow = new StatusWindow( window,  "Posting to Newsgroup", FRAMEX, FRAMEY );

				statusWindow.setVisible( true );
				//statusWindow.requestFocusInWindow();
				statusLine = "Ready to send...";
				statusWindow.setStatus( 0, statusLine );

				// Get the boolean values for HTML/Office document
				// params: ( XScriptContext, StatusWindow, html document, office document )

				boolean html = false;
				boolean office = false;
				if( officeHtmlButton.isSelected() ) { html = true; office = true; }
				if( officeButton.isSelected() ) { office = true; html = false; }
				if( htmlButton.isSelected() ) { html = true; office = false; }

				OfficeAttachment officeAttach = new OfficeAttachment( xscriptcontext, statusWindow, html, office );

				statusLine = "Getting user input";
				statusWindow.setStatus( 2, statusLine );
				// Get replyto, subject, comment from textboxes
				String replyto = replyTextField.getText();
				String subject = subjectTextField.getText();
				String comment = commentTextArea.getText();

				// Get newsgroup from combo box (corresponding position)
				String host = "";
				String group = "";
				int position = newsgroupComboBox.getSelectedIndex();
				if( subscribedNewsgroups == null || position == -1 )
				{
					host = hostTextField.getText();
					group = newsgroupComboBox.getSelectedItem().toString();
				}
				else
				{
					//int position = newsgroupComboBox.getSelectedIndex();
					host = subscribedNewsgroups[ position ].getHostName();
					group = subscribedNewsgroups[ position ].getNewsgroupName();
				}

				statusLine = "Creating sender object";
				statusWindow.setStatus( 3, statusLine );
				Sender sender = new Sender( statusWindow, officeAttach, replyto, subject, comment, host, group );
				if( !sender.sendMail() )
				{
					//System.out.println( "Should end here (?)" );
					statusWindow.enableCancelButton( true );
					officeAttach.cleanUpOnError();
					return false;
				}

				statusLine = "Send is complete";
				statusWindow.setStatus( 14, statusLine );
			}
			else
			{
				//System.out.println( "Non valid data" );
				return false;
			}
			return true;
	}


	private JPanel constructButtonPanel()
	{
		Action postAction = new AbstractAction() {
			public void actionPerformed( ActionEvent event ) {
				// posting actions
				sendingActions();
			}// actionPerformed
		};

		Action cancelAction = new AbstractAction() {
                        public void actionPerformed( ActionEvent event ) {
                                // cancelling actions
				window.dispose();
                        }
                };

		postButton = new JButton();
		postButton.setAction( postAction );
		postButton.setToolTipText( postText );
		postButton.setText( "Post" );
		postButton.setPreferredSize( new Dimension( BUTTONWIDTH + 20, BUTTONHEIGHT ) );

		cancelButton = new JButton();
		cancelButton.setAction( cancelAction );
		cancelButton.setToolTipText( cancelText );
		cancelButton.setText( "Cancel" );
		cancelButton.setPreferredSize( new Dimension( BUTTONWIDTH + 20, BUTTONHEIGHT ) );

		JSeparator sep = new JSeparator( SwingConstants.HORIZONTAL );

		JPanel buttonPanel = new JPanel();
		buttonPanel.setLayout( new GridBagLayout() );
		GridBagConstraints constraints = new GridBagConstraints();
		constraints.fill = GridBagConstraints.BOTH;
		constraints.insets = new Insets( 5, 5, 5, 5 );

		JPanel emptyPanel1 = new JPanel();
		emptyPanel1.setPreferredSize( new Dimension( BUTTONWIDTH, BUTTONHEIGHT ) );

		JPanel emptyPanel2 = new JPanel();
		emptyPanel2.setPreferredSize( new Dimension( BUTTONWIDTH, BUTTONHEIGHT ) );

		constraints.gridx = 0;
                constraints.gridy = 0;
                constraints.gridwidth = 4;
                constraints.gridheight = 1;
                buttonPanel.add( sep, constraints );

		constraints.gridx = 0;
                constraints.gridy = 1;
                constraints.gridwidth = 1;
                constraints.gridheight = 1;
                buttonPanel.add( emptyPanel1, constraints );

                constraints.gridx = 1;
                constraints.gridy = 1;
                constraints.gridwidth = 1;
                constraints.gridheight = 1;
                buttonPanel.add( emptyPanel2, constraints );

		constraints.gridx = 2;
		constraints.gridy = 1;
		constraints.gridwidth = 1;
		constraints.gridheight = 1;
		buttonPanel.add( postButton, constraints );

		constraints.gridx = 3;
		constraints.gridy = 1;
		constraints.gridwidth = 1;
		constraints.gridheight = 1;
		constraints.insets = new Insets( 5, 5, 5, 0 );
		buttonPanel.add( cancelButton, constraints );

                return buttonPanel;
	}


	public void enableButtons( boolean enable )
	{
		if( enable )
		{
			postButton.setEnabled( true );
			cancelButton.setEnabled( true );
		}
		else
		{
			postButton.setEnabled( false );
			cancelButton.setEnabled( false );
		}
	}


	private boolean isValidData()
	{
		// newsgroupComboBox must not be blank (format? dots and whitespace)
		String newsgroupString = "";
		int position = newsgroupComboBox.getSelectedIndex();
		if( subscribedNewsgroups == null || position == -1 )
		{
			newsgroupString = newsgroupComboBox.getSelectedItem().toString();
		}
		else
		{
			//int position = newsgroupComboBox.getSelectedIndex();
			newsgroupString = subscribedNewsgroups[ position ].getNewsgroupName();
		}
		if( newsgroupString.length() == 0 )
		{
			//System.out.println( "Please enter a newsgroup name" );
			newsgroupComboBox.requestFocus();
			JOptionPane.showMessageDialog( window, "Please enter a newsgroup name", "Input Error", JOptionPane.ERROR_MESSAGE );
			return false;
		}


		// hostTextField must not be blank (format?)
		String  hostString = hostTextField.getText();
                if( hostString.length() == 0 )
                {
			//System.out.println( "Please enter a hostname" );
			hostTextField.requestFocus();
			JOptionPane.showMessageDialog( window, "Please enter a hostname", "Input Error", JOptionPane.ERROR_MESSAGE );
                        return false;
                }


		// replyTextField must have <string>@<string>.<string>
		// (string at least 2 chars long)
		// consider <s>.<s>@<s>.<s>.<s> format? (array of dot positions?)
		String replyString = replyTextField.getText();
		int atPos = replyString.indexOf( "@" );
		int dotPos = replyString.lastIndexOf( "." );
		int length = replyString.length();
		//System.out.println( "length: " + length + "\n atPos: " + atPos + "\n dotPos: " + dotPos );
		if( length == 0 || atPos == -1 || dotPos == -1 || atPos < 2 || dotPos < atPos || dotPos + 2 == length || atPos + 2 == dotPos || atPos != replyString.lastIndexOf( "@" ) || replyString.indexOf(" ") != -1 )
		{
			//System.out.println( "Please enter a valid reply to email address" );
			replyTextField.requestFocus();
			JOptionPane.showMessageDialog( window, "Please enter a valid reply to email address", "Input Error", JOptionPane.ERROR_MESSAGE );
			return false;
		}


		// subjectTextField must not be blank?
		String subjectString = subjectTextField.getText();
		if( subjectString.length() == 0 )
		{
			//System.out.println( "Please enter subject title" );
			subjectTextField.requestFocus();
			JOptionPane.showMessageDialog( window, "Please enter subject title", "Input Error", JOptionPane.ERROR_MESSAGE );
			return false;
		}

		// details are valid
		return true;
	}

}