/*
 * 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.
 */

package org.netbeans.modules.versioning.ui.options;

import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import javax.swing.DefaultComboBoxModel;
import javax.swing.DefaultListCellRenderer;
import javax.swing.DefaultListModel;
import javax.swing.JList;
import org.netbeans.modules.versioning.core.util.VCSSystemProvider.VersioningSystem;
import org.netbeans.modules.versioning.core.api.VCSFileProxy;
import org.netbeans.modules.versioning.core.api.VersioningSupport;
import org.netbeans.modules.versioning.core.util.Utils;
import org.netbeans.spi.options.OptionsPanelController;
import org.openide.filesystems.FileChooserBuilder;
import org.openide.util.Lookup;
import org.openide.util.NbBundle;
import org.openide.util.RequestProcessor;

@OptionsPanelController.Keywords(keywords={"#GeneralOptionsPanel.kw1", "#GeneralOptionsPanel.kw3", "#GeneralOptionsPanel.kw3"}, location="Team", tabTitle="#CTL_OptionsPanel.tabName")
@NbBundle.Messages({
    "CTL_OptionsPanel.tabName=Versioning",
    "GeneralOptionsPanel.kw1=general",
    "GeneralOptionsPanel.kw2=versioning",
    "GeneralOptionsPanel.kw3=disconnected repositories"
})
final class GeneralOptionsPanel extends javax.swing.JPanel implements ActionListener {
    
    private final GeneralOptionsPanelController controller;
    private String[] keywords;
    private boolean originalLabels;
    private final HashMap<VersioningSystem, List<String>> savedDisconnectedFolders = new HashMap<VersioningSystem, List<String>>();
    private int selectedIndex = 0;
    
    GeneralOptionsPanel (GeneralOptionsPanelController controller) {
        this.controller = controller;        
        initComponents();
        cmbVersioningSystems.setRenderer(new Renderer());
        cmbVersioningSystems.addActionListener(this);
        btnRemove.addActionListener(this);
        btnAdd.addActionListener(this);
    }
    
    @Override
    public void addNotify() {
        super.addNotify();        
    }

    @Override
    public void removeNotify() {        
        super.removeNotify();
    }

    Collection<String> getKeywords () {
        if (keywords == null) {
            keywords = new String[] {
                Bundle.GeneralOptionsPanel_kw1().toUpperCase(),
                Bundle.GeneralOptionsPanel_kw2().toUpperCase(),
                Bundle.GeneralOptionsPanel_kw3().toUpperCase()
            };
        }
        return Collections.unmodifiableList(Arrays.asList(keywords));
    }

    private void fillDisconnectedFolders () {
        if (cmbVersioningSystems.getSelectedItem() instanceof VersioningSystem) {
            String[] disconnected = Utils.getDisconnectedRoots(((VersioningSystem) cmbVersioningSystems.getSelectedItem()));
            DefaultListModel<String> model = new DefaultListModel<>();
            for (String f : disconnected) {
                model.addElement(f);
            }
            lstDisconnectedFolders.setModel(model);
        }
    }

    /** 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.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        cmbVersioningSystems = new javax.swing.JComboBox();
        jLabel2 = new javax.swing.JLabel();
        jScrollPane1 = new javax.swing.JScrollPane();
        lstDisconnectedFolders = new javax.swing.JList();
        btnRemove = new javax.swing.JButton();
        btnAdd = new javax.swing.JButton();
        jLabel3 = new javax.swing.JLabel();
        jSeparator1 = new javax.swing.JSeparator();
        cbShowLabels = new javax.swing.JCheckBox();

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

        jLabel2.setLabelFor(lstDisconnectedFolders);
        org.openide.awt.Mnemonics.setLocalizedText(jLabel2, org.openide.util.NbBundle.getMessage(GeneralOptionsPanel.class, "GeneralOptionsPanel.jLabel2.text")); // NOI18N

        jScrollPane1.setViewportView(lstDisconnectedFolders);

        org.openide.awt.Mnemonics.setLocalizedText(btnRemove, org.openide.util.NbBundle.getMessage(GeneralOptionsPanel.class, "GeneralOptionsPanel.btnRemove.text")); // NOI18N
        btnRemove.setToolTipText(org.openide.util.NbBundle.getMessage(GeneralOptionsPanel.class, "GeneralOptionsPanel.btnRemove.TTtext")); // NOI18N

        org.openide.awt.Mnemonics.setLocalizedText(btnAdd, org.openide.util.NbBundle.getMessage(GeneralOptionsPanel.class, "GeneralOptionsPanel.btnAdd.text")); // NOI18N
        btnAdd.setToolTipText(org.openide.util.NbBundle.getMessage(GeneralOptionsPanel.class, "GeneralOptionsPanel.btnAdd.toolTipText")); // NOI18N

        org.openide.awt.Mnemonics.setLocalizedText(jLabel3, org.openide.util.NbBundle.getMessage(GeneralOptionsPanel.class, "LBL_OptionsPanel.disconnectedFolders.title")); // NOI18N

        org.openide.awt.Mnemonics.setLocalizedText(cbShowLabels, org.openide.util.NbBundle.getMessage(GeneralOptionsPanel.class, "GeneralOptionsPanel.cbShowLabels.text")); // NOI18N
        cbShowLabels.setToolTipText(org.openide.util.NbBundle.getMessage(GeneralOptionsPanel.class, "GeneralOptionsPanel.cbShowLabels.TTtext")); // NOI18N
        cbShowLabels.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                cbShowLabelsActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(cbShowLabels)
                        .addGap(0, 0, Short.MAX_VALUE))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(12, 12, 12)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jLabel2)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jLabel1)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(cmbVersioningSystems, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(btnRemove)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(btnAdd))
                            .addComponent(jScrollPane1)))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel3)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jSeparator1)))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(cbShowLabels)
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jLabel3)
                    .addComponent(jSeparator1, javax.swing.GroupLayout.PREFERRED_SIZE, 4, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(cmbVersioningSystems, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jLabel2)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(btnRemove)
                    .addComponent(btnAdd))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
    }// </editor-fold>//GEN-END:initComponents

    private void cbShowLabelsActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cbShowLabelsActionPerformed
        fireChanged();
    }//GEN-LAST:event_cbShowLabelsActionPerformed

    void load () {
        fillVersioningSystems();
        originalLabels = VersioningSupport.isTextAnnotationVisible();
        cbShowLabels.setSelected(originalLabels);
        cmbVersioningSystems.setSelectedIndex(selectedIndex);
        for (int i = 0; i < cmbVersioningSystems.getItemCount(); i++) {
            VersioningSystem vs = (VersioningSystem) cmbVersioningSystems.getItemAt(i);
            savedDisconnectedFolders.put(vs, Arrays.asList(Utils.getDisconnectedRoots(vs)));
        }
    }
    
    void store() {
        originalLabels = cbShowLabels.isSelected();
        VersioningSupport.getPreferences().putBoolean(VersioningSupport.PREF_BOOLEAN_TEXT_ANNOTATIONS_VISIBLE, originalLabels);
        savedDisconnectedFolders.clear();
    }
    
    boolean valid() {
        return true;
    }
    
    void cancel() {
        for(Map.Entry<VersioningSystem, List<String>> entry : savedDisconnectedFolders.entrySet()) {
            VersioningSystem vs = entry.getKey();
            List<String> saved = entry.getValue();
            List<String> current = Arrays.asList(Utils.getDisconnectedRoots(vs));
            for (String folder : saved) {
                if (!current.contains(folder)) {
                    Utils.disconnectRepository(vs, folder);
                }
            }
            for (String folder : current) {
                if (!saved.contains(folder)) {
                    Utils.connectRepository(vs, folder);
                }
            }
        }
        savedDisconnectedFolders.clear();
    }
    
    private void fireChanged() {
        boolean isChanged = originalLabels != cbShowLabels.isSelected();
        for(VersioningSystem vs : savedDisconnectedFolders.keySet()) {
            isChanged |= !savedDisconnectedFolders.get(vs).equals(Arrays.asList(Utils.getDisconnectedRoots(vs)));
        }
        controller.changed(isChanged);
    }
 
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton btnAdd;
    private javax.swing.JButton btnRemove;
    private javax.swing.JCheckBox cbShowLabels;
    private javax.swing.JComboBox cmbVersioningSystems;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JSeparator jSeparator1;
    private javax.swing.JList lstDisconnectedFolders;
    // End of variables declaration//GEN-END:variables

    private void fillVersioningSystems () {
        List<VersioningSystem> systems = new LinkedList<VersioningSystem>();
        for (VersioningSystem system : Lookup.getDefault().lookupAll(VersioningSystem.class)) {
            systems.add(system);
        }
        cmbVersioningSystems.setModel(new DefaultComboBoxModel(systems.toArray(new VersioningSystem[systems.size()])));
    }

    @Override
    public void actionPerformed (ActionEvent e) {
        if (e.getSource() == cmbVersioningSystems) {
            fillDisconnectedFolders();
            selectedIndex = cmbVersioningSystems.getSelectedIndex();
        } else if (e.getSource() == btnRemove) {
            if (cmbVersioningSystems.getSelectedItem() instanceof VersioningSystem && lstDisconnectedFolders.getSelectedValue() != null) {
                String f = (String) lstDisconnectedFolders.getSelectedValue();
                Utils.connectRepository((VersioningSystem) cmbVersioningSystems.getSelectedItem(), f);
                fillDisconnectedFolders();
                refreshSystems();
            }
        } else if (e.getSource() == btnAdd) {
            if (cmbVersioningSystems.getSelectedItem() instanceof VersioningSystem) {
                VersioningSystem vcs = (VersioningSystem) cmbVersioningSystems.getSelectedItem();
                File f = new FileChooserBuilder("VersioningOptions.disconnected").setTitle(NbBundle.getMessage(GeneralOptionsPanel.class, "LBL_DisconnectingFolder.title")) //NOI18N
                        .setDirectoriesOnly(true).setFileHiding(true).showOpenDialog();
                if (f != null && (vcs.getTopmostManagedAncestor(VCSFileProxy.createFileProxy(f)) != null)) {
                    Utils.disconnectRepository(vcs, f.getAbsolutePath());
                    fillDisconnectedFolders();
                    refreshSystems();
                }
            }
        }
        fireChanged();
    }

    private void refreshSystems () {
        RequestProcessor.getDefault().post(new Runnable() {
            @Override
            public void run () {
                Utils.versionedRootsChanged();
            }
        }).schedule(100);
    }
    
    private static class Renderer extends DefaultListCellRenderer {

        @Override
        public Component getListCellRendererComponent (JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
            if (value instanceof VersioningSystem) {
                value = ((VersioningSystem) value).getDisplayName();
            }
            return super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
        }
    }
}
