package net.sf.jabref.external;

 import net.sf.jabref.*;

 import net.sf.jabref.gui.FileListEditor;

 import net.sf.jabref.gui.FileListEntry;

 import net.sf.jabref.gui.FileDialogs;

 import javax.swing.*;

 import java.awt.event.ActionEvent;

 import java.io.File;

 import java.io.IOException;

 /**

  * Action for moving or renaming a file that is linked to from an entry in JabRef.

  */

 public class MoveFileAction extends AbstractAction {

     private JabRefFrame frame;

     private EntryEditor eEditor;

     private FileListEditor editor;

     private boolean toFileDir;

     public MoveFileAction(JabRefFrame frame, EntryEditor eEditor, FileListEditor editor,

                           boolean toFileDir) {

         this.frame = frame;

         this.eEditor = eEditor;

         this.editor = editor;

         this.toFileDir = toFileDir;

     }

     public void actionPerformed(ActionEvent event) {

         int selected = editor.getSelectedRow();

         if (selected == -1)

             return;

         FileListEntry flEntry = editor.getTableModel().getEntry(selected);

         // Check if the current file exists:

         String ln = flEntry.getLink();

         boolean httpLink = ln.toLowerCase().startsWith("http");

         if (httpLink) {

             // TODO: notify that this operation cannot be done on remote links

         }

         // Get an absolute path representation:

         String dir = frame.basePanel().metaData().getFileDirectory(GUIGlobals.FILE_FIELD);

         if ((dir == null) || (dir.trim().length() == 0) || !(new File(dir)).exists()) {

             JOptionPane.showMessageDialog(frame, Globals.lang("File_directory_is_not_set_or_does_not_exist!"),

                     Globals.lang("Move/Rename file"), JOptionPane.ERROR_MESSAGE);

             return;

         }

         File file = new File(ln);

         if (!file.isAbsolute()) {

             file = Util.expandFilename(ln, new String[]{dir});

         }

         if ((file != null) && file.exists()) {

             // Ok, we found the file. Now get a new name:

             String extension = null;

             if (flEntry.getType() != null)

                 extension = "." + flEntry.getType().getExtension();

             File newFile = null;

             boolean repeat = true;

             while (repeat) {

                 repeat = false;

                 String chosenFile;

                 if (toFileDir) {

                     String suggName = eEditor.getEntry().getCiteKey()+extension;

                     CheckBoxMessage cbm = new CheckBoxMessage(Globals.lang("Move file to file directory?"),

                             Globals.lang("Rename to '%0'",suggName),

                             Globals.prefs.getBoolean("renameOnMoveFileToFileDir"));

                     int answer;

                     // Only ask about renaming file if the file doesn't have the proper name already:

                     if (!suggName.equals(file.getName()))

                         answer = JOptionPane.showConfirmDialog(frame, cbm, Globals.lang("Move/Rename file"),

                                 JOptionPane.YES_NO_OPTION);

                     else

                         answer = JOptionPane.showConfirmDialog(frame, Globals.lang("Move file to file directory?"),

                                 Globals.lang("Move/Rename file"), JOptionPane.YES_NO_OPTION);

                     if (answer != JOptionPane.YES_OPTION)

                         return;

                     Globals.prefs.putBoolean("renameOnMoveFileToFileDir", cbm.isSelected());

                     StringBuilder sb = new StringBuilder(dir);

                     if (!dir.endsWith(File.separator))

                         sb.append(File.separator);

                     if (cbm.isSelected()) {

                         // Rename:

                         sb.append(suggName);

                     }

                     else {

                         // Do not rename:

                         sb.append(file.getName());

                     }

                     chosenFile = sb.toString();

                 } else {

                     chosenFile = FileDialogs.getNewFile(frame, file, extension, JFileChooser.SAVE_DIALOG, false);

                 }

                 if (chosenFile == null) {

                     return; // cancelled

                 }

                 newFile = new File(chosenFile);

                 // Check if the file already exists:

                 if (newFile.exists() && (JOptionPane.showConfirmDialog

                         (frame, "'" + newFile.getName() + "' " + Globals.lang("exists. Overwrite file?"),

                                 Globals.lang("Move/Rename file"), JOptionPane.OK_CANCEL_OPTION)

                         != JOptionPane.OK_OPTION)) {

                     if (!toFileDir)

                         repeat = true;

                     else

                         return;

                 }

             }

             if (!newFile.equals(file)) {

                 try {

                     boolean success = file.renameTo(newFile);

                     if (!success) {

                         success = Util.copyFile(file, newFile, true);

                     }

                     if (success) {

                         // Remove the original file:

                         file.delete();

                         // Relativise path, if possible.

                         String canPath = (new File(dir)).getCanonicalPath();

                         if (newFile.getCanonicalPath().startsWith(canPath)) {

                             if ((newFile.getCanonicalPath().length() > canPath.length()) &&

                                     (newFile.getCanonicalPath().charAt(canPath.length()) == File.separatorChar))

                                 flEntry.setLink(newFile.getCanonicalPath().substring(1+canPath.length()));

                             else

                                 flEntry.setLink(newFile.getCanonicalPath().substring(canPath.length()));

                         }

                         else

                             flEntry.setLink(newFile.getCanonicalPath());

                         eEditor.updateField(editor);

                         JOptionPane.showMessageDialog(frame, Globals.lang("File moved"),

                                 Globals.lang("Move/Rename file"), JOptionPane.INFORMATION_MESSAGE);

                     } else {

                         JOptionPane.showMessageDialog(frame, Globals.lang("Move file failed"),

                                 Globals.lang("Move/Rename file"), JOptionPane.ERROR_MESSAGE);

                     }

                 } catch (SecurityException ex) {

                     ex.printStackTrace();

                     JOptionPane.showMessageDialog(frame, Globals.lang("Could not move file") + ": " + ex.getMessage(),

                             Globals.lang("Move/Rename file"), JOptionPane.ERROR_MESSAGE);

                 } catch (IOException ex) {

                     ex.printStackTrace();

                     JOptionPane.showMessageDialog(frame, Globals.lang("Could not move file") + ": " + ex.getMessage(),

                             Globals.lang("Move/Rename file"), JOptionPane.ERROR_MESSAGE);

                 }

             }

         }

         else {

             // File doesn't exist, so we can't move it.

             JOptionPane.showMessageDialog(frame, Globals.lang("Could not find file '%0'.", flEntry.getLink()),

                     Globals.lang("File not found"), JOptionPane.ERROR_MESSAGE);

         }

     }

 }