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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2010-2011 Sun Microsystems, Inc. All rights reserved.

 *

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

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 * http://www.netbeans.org/cddl-gplv2.html

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 * Portions Copyrighted 2010-2011 Sun Microsystems, Inc.

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package org.netbeans.modules.jackpot30.impl.indexing.options;

import java.awt.Component;

import java.io.File;

import java.net.MalformedURLException;

import java.net.URISyntaxException;

import java.net.URL;

import java.text.DateFormat;

import java.util.Collection;

import java.util.Date;

import java.util.HashMap;

import java.util.Map;

import java.util.concurrent.atomic.AtomicBoolean;

import java.util.concurrent.atomic.AtomicReference;

import java.util.logging.Level;

import java.util.logging.Logger;

import javax.swing.DefaultComboBoxModel;

import javax.swing.DefaultListCellRenderer;

import javax.swing.JButton;

import javax.swing.JFileChooser;

import javax.swing.JList;

import javax.swing.JTextField;

import javax.swing.SwingUtilities;

import javax.swing.UIManager;

import javax.swing.event.DocumentEvent;

import javax.swing.event.DocumentListener;

import org.codeviation.pojson.Pojson;

import org.netbeans.modules.jackpot30.impl.WebUtilities;

import org.netbeans.modules.jackpot30.impl.indexing.IndexInfo;

import org.netbeans.modules.jackpot30.impl.indexing.RemoteIndex;

import org.openide.NotificationLineSupport;

import org.openide.util.RequestProcessor;

/**

 *

 * @author lahvac

 */

public class CustomizeRemoteIndex extends javax.swing.JPanel {

    private final JButton okButton;

    public CustomizeRemoteIndex(JButton okButton) {

        this.okButton = okButton;

        initComponents();

        DocumentListener updateErrorsListener = new DocumentListener() {

            public void insertUpdate(DocumentEvent e) {

                updateErrors();

            }

            public void removeUpdate(DocumentEvent e) {

                updateErrors();

            }

            public void changedUpdate(DocumentEvent e) {}

        };

        folder.getDocument().addDocumentListener(updateErrorsListener);

        indexURL.getDocument().addDocumentListener(new DocumentListener() {

            public void insertUpdate(DocumentEvent e) {

                indexURLUpdated();

            }

            public void removeUpdate(DocumentEvent e) {

                indexURLUpdated();

            }

            public void changedUpdate(DocumentEvent e) {

            }

        });

        indexInfo.setFont(UIManager.getFont("Label.font"));

        indexInfo.setBackground(UIManager.getColor("Label.background"));

        indexInfo.setDisabledTextColor(UIManager.getColor("Label.foreground"));

    }

    /** This method is called from within the constructor to

     * initialize the form.

     * WARNING: Do NOT modify this code. The content of this method is

     * always regenerated by the Form Editor.

     */

    @SuppressWarnings("unchecked")

    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents

    private void initComponents() {

        java.awt.GridBagConstraints gridBagConstraints;

        buttonGroup1 = new javax.swing.ButtonGroup();

        folderPanel = new javax.swing.JPanel();

        folderLabel = new javax.swing.JLabel();

        folderChooser = new javax.swing.JButton();

        folder = new javax.swing.JTextField();

        indexInfo = new javax.swing.JTextArea();

        remoteIndexPanel = new javax.swing.JPanel();

        indexURL = new javax.swing.JTextField();

        indexURLLabel = new javax.swing.JLabel();

        subIndex = new javax.swing.JComboBox();

        jLabel1 = new javax.swing.JLabel();

        setBorder(javax.swing.BorderFactory.createEmptyBorder(12, 12, 12, 12));

        setLayout(new java.awt.GridBagLayout());

        folderPanel.setLayout(new java.awt.GridBagLayout());

        org.openide.awt.Mnemonics.setLocalizedText(folderLabel, org.openide.util.NbBundle.getMessage(CustomizeRemoteIndex.class, "CustomizeRemoteIndex.folderLabel.text")); // NOI18N

        gridBagConstraints = new java.awt.GridBagConstraints();

        gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;

        gridBagConstraints.insets = new java.awt.Insets(0, 0, 0, 6);

        folderPanel.add(folderLabel, gridBagConstraints);

        org.openide.awt.Mnemonics.setLocalizedText(folderChooser, org.openide.util.NbBundle.getMessage(CustomizeRemoteIndex.class, "CustomizeRemoteIndex.folderChooser.text")); // NOI18N

        folderChooser.addActionListener(new java.awt.event.ActionListener() {

            public void actionPerformed(java.awt.event.ActionEvent evt) {

                folderChooserActionPerformed(evt);

            }

        });

        gridBagConstraints = new java.awt.GridBagConstraints();

        gridBagConstraints.gridx = 2;

        gridBagConstraints.gridy = 0;

        gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;

        gridBagConstraints.insets = new java.awt.Insets(0, 6, 0, 0);

        folderPanel.add(folderChooser, gridBagConstraints);

        folder.setText(org.openide.util.NbBundle.getMessage(CustomizeRemoteIndex.class, "CustomizeRemoteIndex.folder.text")); // NOI18N

        gridBagConstraints = new java.awt.GridBagConstraints();

        gridBagConstraints.gridx = 1;

        gridBagConstraints.gridy = 0;

        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;

        gridBagConstraints.weightx = 1.0;

        folderPanel.add(folder, gridBagConstraints);

        gridBagConstraints = new java.awt.GridBagConstraints();

        gridBagConstraints.gridx = 0;

        gridBagConstraints.gridy = 0;

        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;

        gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;

        gridBagConstraints.weightx = 1.0;

        add(folderPanel, gridBagConstraints);

        indexInfo.setColumns(20);

        indexInfo.setEditable(false);

        indexInfo.setRows(5);

        indexInfo.setBorder(null);

        gridBagConstraints = new java.awt.GridBagConstraints();

        gridBagConstraints.gridx = 0;

        gridBagConstraints.gridy = 2;

        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;

        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;

        gridBagConstraints.weightx = 1.0;

        gridBagConstraints.weighty = 1.0;

        gridBagConstraints.insets = new java.awt.Insets(6, 0, 0, 0);

        add(indexInfo, gridBagConstraints);

        indexURL.setColumns(40);

        indexURL.setText(org.openide.util.NbBundle.getMessage(CustomizeRemoteIndex.class, "CustomizeRemoteIndex.indexURL.text")); // NOI18N

        org.openide.awt.Mnemonics.setLocalizedText(indexURLLabel, org.openide.util.NbBundle.getMessage(CustomizeRemoteIndex.class, "CustomizeRemoteIndex.indexURLLabel.text")); // NOI18N

        subIndex.addActionListener(new java.awt.event.ActionListener() {

            public void actionPerformed(java.awt.event.ActionEvent evt) {

                subIndexActionPerformed(evt);

            }

        });

        org.openide.awt.Mnemonics.setLocalizedText(jLabel1, org.openide.util.NbBundle.getMessage(CustomizeRemoteIndex.class, "CustomizeRemoteIndex.jLabel1.text")); // NOI18N

        javax.swing.GroupLayout remoteIndexPanelLayout = new javax.swing.GroupLayout(remoteIndexPanel);

        remoteIndexPanel.setLayout(remoteIndexPanelLayout);

        remoteIndexPanelLayout.setHorizontalGroup(

            remoteIndexPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

            .addGroup(remoteIndexPanelLayout.createSequentialGroup()

                .addContainerGap()

                .addGroup(remoteIndexPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

                    .addGroup(remoteIndexPanelLayout.createSequentialGroup()

                        .addGap(12, 12, 12)

                        .addComponent(jLabel1)

                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)

                        .addComponent(subIndex, 0, 589, Short.MAX_VALUE))

                    .addGroup(remoteIndexPanelLayout.createSequentialGroup()

                        .addComponent(indexURLLabel)

                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)

                        .addComponent(indexURL, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))

                .addContainerGap())

        );

        remoteIndexPanelLayout.setVerticalGroup(

            remoteIndexPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

            .addGroup(remoteIndexPanelLayout.createSequentialGroup()

                .addContainerGap()

                .addGroup(remoteIndexPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)

                    .addComponent(indexURLLabel)

                    .addComponent(indexURL, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))

                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)

                .addGroup(remoteIndexPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)

                    .addComponent(jLabel1)

                    .addComponent(subIndex, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))

                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))

        );

        gridBagConstraints = new java.awt.GridBagConstraints();

        gridBagConstraints.gridx = 0;

        gridBagConstraints.gridy = 1;

        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;

        gridBagConstraints.weightx = 1.0;

        add(remoteIndexPanel, gridBagConstraints);

    }// </editor-fold>//GEN-END:initComponents

    private void folderChooserActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_folderChooserActionPerformed

        showFileChooser(folder);

}//GEN-LAST:event_folderChooserActionPerformed

    private void subIndexActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_subIndexActionPerformed

        subindexSelectionUpdated();

    }//GEN-LAST:event_subIndexActionPerformed

    // Variables declaration - do not modify//GEN-BEGIN:variables

    private javax.swing.ButtonGroup buttonGroup1;

    private javax.swing.JTextField folder;

    private javax.swing.JButton folderChooser;

    private javax.swing.JLabel folderLabel;

    private javax.swing.JPanel folderPanel;

    private javax.swing.JTextArea indexInfo;

    private javax.swing.JTextField indexURL;

    private javax.swing.JLabel indexURLLabel;

    private javax.swing.JLabel jLabel1;

    private javax.swing.JPanel remoteIndexPanel;

    private javax.swing.JComboBox subIndex;

    // End of variables declaration//GEN-END:variables

    private void showFileChooser(JTextField folder) {

        JFileChooser c = new JFileChooser();

        c.setSelectedFile(new File(folder.getText()));

        c.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);

        c.setMultiSelectionEnabled(false);

        c.setApproveButtonText("Select");

        if (c.showDialog(this, null) == JFileChooser.APPROVE_OPTION) {

            folder.setText(c.getSelectedFile().getAbsolutePath());

        }

    }

    public void setIndex(RemoteIndex index) {

        folder.setText(index.folder);

        indexURL.setText(index.remote.toExternalForm());

        subIndex.setSelectedItem(index.remoteSegment);

    }

    public RemoteIndex getIndex() {

        try {

            return RemoteIndex.create(folder.getText(), new URL(indexURL.getText()), (String) subIndex.getSelectedItem());

        } catch (MalformedURLException ex) {

            throw new IllegalStateException(ex);

        }

    }

    private NotificationLineSupport notificationSupport;

    public void setNotificationSupport(NotificationLineSupport notificationSupport) {

        this.notificationSupport = notificationSupport;

    }

    private void updateErrors() {

        notificationSupport.clearMessages();

        File folderFile = new File(folder.getText());

        if (!folderFile.exists()) {

            notificationSupport.setErrorMessage("Specified directory does not exist.");

            okButton.setEnabled(false);

            return;

        }

        if (!folderFile.isDirectory()) {

            notificationSupport.setErrorMessage("Specified directory is not directory.");

            okButton.setEnabled(false);

            return ;

        }

        if (checkingIndexURL.get()) {

            notificationSupport.setInformationMessage("Checking index URL");

            okButton.setEnabled(false);

            return;

        }

        String urlError = checkingIndexURLError.get();

        if (urlError != null) {

            notificationSupport.setErrorMessage(urlError);

            okButton.setEnabled(false);

            return;

        }

        okButton.setEnabled(true);

    }

    private final AtomicBoolean checkingIndexURL = new AtomicBoolean();

    private final AtomicReference<String> checkingIndexURLContentCopy = new AtomicReference<String>();

    private final AtomicReference<String> checkingIndexURLError = new AtomicReference<String>();

    private void indexURLUpdated() {

        checkingIndexURLContentCopy.set(indexURL.getText());

        urlCheckerTask.cancel();

        urlCheckerTask.schedule(50);

    }

    private static final RequestProcessor WORKER = new RequestProcessor(CustomizeRemoteIndex.class.getName(), 1, false, false);

    private final RequestProcessor.Task urlCheckerTask = WORKER.create(new Runnable() {

        public void run() {

            checkingIndexURL.set(true);

            checkingIndexURLError.set(null);

            SwingUtilities.invokeLater(new Runnable() {

                public void run() {

                    updateErrors();

                }

            });

            String urlText = checkingIndexURLContentCopy.get();

            Collection<? extends String> subindices = null;

            try {

                URL url = new URL(urlText);

                if (!url.getPath().endsWith("/"))

                    url = new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getPath() + "/" + (url.getQuery() != null ? "?" + url.getQuery() : ""));

                subindices = WebUtilities.requestStringArrayResponse(url.toURI().resolve("list"));

                if (subindices.isEmpty()) {

                   checkingIndexURLError.set("Not an index.");

                }

            } catch (URISyntaxException ex) {

                checkingIndexURLError.set(ex.getLocalizedMessage());

            } catch (MalformedURLException ex) {

                checkingIndexURLError.set(ex.getLocalizedMessage());

            } catch (ThreadDeath td) {

                throw td;

            } catch (Throwable t) {//#6541019

                checkingIndexURLError.set("Invalid URL");

            }

            checkingIndexURL.set(false);

            final Collection<? extends String> subindicesFinal = subindices;

            SwingUtilities.invokeLater(new Runnable() {

                public void run() {

                    updateErrors();

                    if (subindicesFinal == null || subindicesFinal.isEmpty()) return;

                    DefaultComboBoxModel model = (DefaultComboBoxModel) subIndex.getModel();

                    String selected = (String) model.getSelectedItem();

                    model.removeAllElements();

                    boolean containsSelection = false;

                    Map<String, String> displayNames = new HashMap<String, String>();

                    for (String subindex : subindicesFinal) {

                        String[] subindexSplit = subindex.split(":", 2);

                        if (subindexSplit[0].equals(selected)) containsSelection = true;

                        model.addElement(subindexSplit[0]);

                        displayNames.put(subindexSplit[0], subindexSplit[1]);

                    }

                    if (containsSelection) {

                        model.setSelectedItem(selected);

                    }

                    subindexSelectionUpdated();

                    subIndex.setRenderer(new RendererImpl(displayNames));

                }

            });

        }

    });

    private final AtomicReference<String> indexInfoURLContentCopy = new AtomicReference<String>();

    private final AtomicReference<String> indexInfoSubIndexCopy = new AtomicReference<String>();

    private void subindexSelectionUpdated() {

        indexInfoURLContentCopy.set(indexURL.getText());

        indexInfoSubIndexCopy.set((String) subIndex.getSelectedItem());

        indexInfoTask.cancel();

        indexInfoTask.schedule(50);

    }

    private final RequestProcessor.Task indexInfoTask = WORKER.create(new Runnable() {

        public void run() {

            String urlText = indexInfoURLContentCopy.get();

            String subIndex = indexInfoSubIndexCopy.get();

            IndexInfo info = null;

            try {

                URL url = new URL(urlText);

                if (!url.getPath().endsWith("/"))

                    url = new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getPath() + "/" + (url.getQuery() != null ? "?" + url.getQuery() : ""));

                String indexInfoText = WebUtilities.requestStringResponse(url.toURI().resolve("info?path=" + WebUtilities.escapeForQuery(subIndex)));

                info = IndexInfo.empty();

                if (indexInfoText != null)

                    Pojson.update(info, indexInfoText);

            } catch (URISyntaxException ex) {

                Logger.getLogger(CustomizeRemoteIndex.class.getName()).log(Level.FINE, null, ex);

            } catch (MalformedURLException ex) {

                Logger.getLogger(CustomizeRemoteIndex.class.getName()).log(Level.FINE, null, ex);

            }

            final IndexInfo infoFinal = info;

            SwingUtilities.invokeLater(new Runnable() {

                public void run() {

                    if (infoFinal != null) {

                        indexInfo.setText(toDisplayText(infoFinal));

                    } else {

                        indexInfo.setText("");

                    }

                }

            });

        }

    });

    private static String toDisplayText(IndexInfo info) {

        StringBuilder sb = new StringBuilder();

        if (info.sourceLocation != null) {

            sb.append("Source Location: ").append(info.sourceLocation).append("\n");

        }

        if (info.lastUpdate >= 0) {

            sb.append("Last Update:\t").append(DateFormat.getDateTimeInstance().format(new Date(info.lastUpdate))).append("\n");

        }

        if (info.totalFiles >= 0) {

            sb.append("Indexed Files:\t").append(info.totalFiles).append("\n");

        }

        return sb.toString();

    }

    private static final class RendererImpl extends DefaultListCellRenderer {

        private final Map<String, String> displayNames;

        public RendererImpl(Map<String, String> displayNames) {

            this.displayNames = displayNames;

        }

        @Override

        public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {

            return super.getListCellRendererComponent(list, displayNames.get(value), index, isSelected, cellHasFocus);

        }

    }

}