/*
 * #%L
 * BSD implementations of Bio-Formats readers and writers
 * %%
 * Copyright (C) 2005 - 2015 Open Microscopy Environment:
 *   - Board of Regents of the University of Wisconsin-Madison
 *   - Glencoe Software, Inc.
 *   - University of Dundee
 * %%
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * #L%
 */

package loci.formats.tools;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;

import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

import loci.common.Constants;
import loci.common.RandomAccessInputStream;
import loci.common.RandomAccessOutputStream;
import loci.formats.FormatException;
import loci.formats.tiff.TiffParser;
import loci.formats.tiff.TiffSaver;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Provides a GUI for editing TIFF file comments.
 *
 * @author Curtis Rueden ctrueden at wisc.edu
 */
public class EditTiffG extends JFrame implements ActionListener {

  // -- Constants --

  private static final String TITLE = "EditTiffG";

  private static final Logger LOGGER = LoggerFactory.getLogger(EditTiffG.class);

  // -- Fields --

  private JTextArea textArea;
  private JFileChooser fileBox;
  private File file;

  // -- Constructor --

  public EditTiffG() {
    setTitle(TITLE);
    setLayout(new BorderLayout());
    textArea = new JTextArea(25, 80);
    add(new JScrollPane(textArea), BorderLayout.CENTER);
    //textArea.setWrapStyleWord(true);
    textArea.setLineWrap(true);

    JMenuBar menubar = new JMenuBar();
    setJMenuBar(menubar);

    JMenu file = new JMenu("File");
    menubar.add(file);

    JMenuItem fileOpen = new JMenuItem("Open");
    file.add(fileOpen);
    fileOpen.addActionListener(this);
    fileOpen.setActionCommand("open");

    JMenuItem fileSave = new JMenuItem("Save");
    file.add(fileSave);
    fileSave.addActionListener(this);
    fileSave.setActionCommand("save");

    JMenuItem fileExit = new JMenuItem("Exit");
    file.add(fileExit);
    fileExit.addActionListener(this);
    fileExit.setActionCommand("exit");

    fileBox = new JFileChooser(System.getProperty("user.dir"));

    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    pack();
    setVisible(true);
  }

  // -- EditTiffG methods --

  public String getXML() {
    return textArea.getText();
  }

  public void setXML(String xml) {
    textArea.setText(xml);
  }

  public void open() {
    int rval = fileBox.showOpenDialog(this);
    if (rval != JFileChooser.APPROVE_OPTION) return;
    File f = fileBox.getSelectedFile();
    openFile(f);
  }

  public void save() {
    saveFile(file);
  }

  public void exit() {
    System.exit(0);
  }

  public void openFile(File f) {
    try {
      String id = f.getAbsolutePath();
      String xml = new TiffParser(id).getComment();
      setXML(xml);
      file = f;
      setTitle(TITLE + " - " + id);
    }
    catch (IOException exc) {
      showError(exc);
    }
  }

  public void saveFile(File f) {
    RandomAccessInputStream in = null;
    RandomAccessOutputStream out = null;
    try {
      String xml = getXML();
      String path = f.getAbsolutePath();
      in = new RandomAccessInputStream(path);
      out = new RandomAccessOutputStream(path);
      TiffSaver saver = new TiffSaver(out, path);
      saver.overwriteComment(in, xml);
    }
    catch (FormatException exc) {
      showError(exc);
    }
    catch (IOException exc) {
      showError(exc);
    } finally {
      try {
        if (in != null) in.close();
      } catch (Exception e) {}
      try {
        if (out != null) out.close();
      } catch (Exception e) {}
    }
  }

  public void showError(Throwable t) {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    String error = "";
    try {
      t.printStackTrace(
        new PrintWriter(new OutputStreamWriter(out, Constants.ENCODING)));
      error = new String(out.toByteArray(), Constants.ENCODING);
    }
    catch (UnsupportedEncodingException e) {
      LOGGER.warn("Failed to show error", e);
    }
    JOptionPane.showMessageDialog(this, "Sorry, there was an error: " + error,
      TITLE, JOptionPane.ERROR_MESSAGE);
  }

  public static void openFile(String filename) {
    EditTiffG etg = new EditTiffG();
    File f = new File(filename);
    if (f.exists()) etg.openFile(f);
  }

  // -- ActionListener methods --

  @Override
  public void actionPerformed(ActionEvent e) {
    String cmd = e.getActionCommand();
    if ("open".equals(cmd)) open();
    else if ("save".equals(cmd)) save();
    else if ("exit".equals(cmd)) exit();
  }

  // -- Main method --

  public static void main(String[] args) throws Exception {
    EditTiffG.openFile(args[0]);
  }

}