package java_lab1;

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.filechooser.FileNameExtensionFilter;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;

import java.awt.GridBagLayout;
import javax.swing.JSplitPane;
import java.awt.GridBagConstraints;
import javax.swing.JList;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JScrollPane;
import java.awt.Insets;
import javax.swing.JTree;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Enumeration;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.awt.event.ActionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.event.TreeSelectionEvent;

public class Gui extends JFrame {

	private JPanel contentPane;
	private URLClassLoader classLoader;
	private JTree tree;
	private JList<String> list;
	private JarEntry entry;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Gui frame = new Gui();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public Gui() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		GridBagLayout gbl_contentPane = new GridBagLayout();
		gbl_contentPane.columnWidths = new int[] { 0, 0 };
		gbl_contentPane.rowHeights = new int[] { 0, 0 };
		gbl_contentPane.columnWeights = new double[] { 1.0, Double.MIN_VALUE };
		gbl_contentPane.rowWeights = new double[] { 1.0, Double.MIN_VALUE };
		contentPane.setLayout(gbl_contentPane);

		JSplitPane splitPane = new JSplitPane();
		GridBagConstraints gbc_splitPane = new GridBagConstraints();
		gbc_splitPane.fill = GridBagConstraints.BOTH;
		gbc_splitPane.gridx = 0;
		gbc_splitPane.gridy = 0;
		contentPane.add(splitPane, gbc_splitPane);

		JPanel panel = new JPanel();
		splitPane.setLeftComponent(panel);
		GridBagLayout gbl_panel = new GridBagLayout();
		gbl_panel.columnWidths = new int[] { 0, 0 };
		gbl_panel.rowHeights = new int[] { 0, 0, 0 };
		gbl_panel.columnWeights = new double[] { 1.0, Double.MIN_VALUE };
		gbl_panel.rowWeights = new double[] { 0.0, 1.0, Double.MIN_VALUE };
		panel.setLayout(gbl_panel);

		JButton btnNewButton = new JButton("New button");
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				JFileChooser chooser = new JFileChooser();
				FileNameExtensionFilter filter = new FileNameExtensionFilter("Jar files", "jar");
				chooser.setFileFilter(filter);
				int returnVal = chooser.showOpenDialog(null);
				if (returnVal == JFileChooser.APPROVE_OPTION) {
					System.out.println("You chose to open this file: " + chooser.getSelectedFile().getName());
				}
				File file = chooser.getSelectedFile();
				try {
					JarFile jarFile = new JarFile(file.getAbsolutePath());
					Enumeration<JarEntry>entries=jarFile.entries();
					while(entries.hasMoreElements()){
						JarEntry jarEntry=entries.nextElement();
						String entryName=jarEntry.getName();
						if(entryName.equals()){

						}

					}
				} catch (IOException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}


				if (file != null) {
					try {
						classLoader = new URLClassLoader(new URL[] { new URL("file:///" + file.getAbsolutePath()) });
					} catch (MalformedURLException e) {
						e.printStackTrace();
					}
					DefaultMutableTreeNode root = new DefaultMutableTreeNode(file);
					Thread thread = new Thread(new JarFileReader(file, root));
					thread.start();
					try {
						thread.join();
					} catch (Exception e) {
						e.printStackTrace();
					}
					tree.setModel(new DefaultTreeModel(root));
					tree.repaint();
				}
			}
		});
		GridBagConstraints gbc_btnNewButton = new GridBagConstraints();
		gbc_btnNewButton.insets = new Insets(0, 0, 5, 0);
		gbc_btnNewButton.gridx = 0;
		gbc_btnNewButton.gridy = 0;
		panel.add(btnNewButton, gbc_btnNewButton);

		JScrollPane scrollPane = new JScrollPane();
		GridBagConstraints gbc_scrollPane = new GridBagConstraints();
		gbc_scrollPane.fill = GridBagConstraints.BOTH;
		gbc_scrollPane.gridx = 0;
		gbc_scrollPane.gridy = 1;
		panel.add(scrollPane, gbc_scrollPane);

		tree = new JTree();
		tree.addTreeSelectionListener(new TreeSelectionListener() {
			public void valueChanged(TreeSelectionEvent arg0) {
				TreePath path = tree.getSelectionPath();
				StringBuilder pathFile = new StringBuilder("/");
				if (path != null) {
					Object[] pathElement = path.getPath();
					for (int i = 1; i < pathElement.length - 1; i++) {
						pathFile.append(pathElement[i]).append("/");
					}
					pathFile.append(pathElement[pathElement.length - 1]);
				}
				try {
					String classpath = pathFile.toString().replaceAll("/", ".");
					if (classpath.endsWith(".class")) {
						Class<?> c = Class.forName(classpath.substring(1, pathFile.length() - 6), false, classLoader);
						list.setModel(ClassDetail.getInfo(c));
					}
				} catch (ClassNotFoundException e1) {
					e1.printStackTrace();
				}
			}
		});
		scrollPane.setViewportView(tree);

		list = new JList();
		splitPane.setRightComponent(list);
	}

}