/*
 * Copyright 2004 - 2013 Wayne Grant
 *           2013 - 2025 Kai Kramer
 *
 * This file is part of KeyStore Explorer.
 *
 * KeyStore Explorer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * KeyStore Explorer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with KeyStore Explorer.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kse.gui.crypto.policymapping;

import java.awt.BorderLayout;
import java.awt.Dialog;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.util.ResourceBundle;

import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.KeyStroke;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.border.EtchedBorder;

import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.kse.crypto.x509.PolicyMapping;
import org.kse.gui.components.JEscDialog;
import org.kse.gui.PlatformUtil;
import org.kse.gui.oid.JObjectId;

/**
 * Dialog to choose an policy mapping.
 */
public class DPolicyMappingChooser extends JEscDialog {
    private static final long serialVersionUID = 1L;

    private static ResourceBundle res = ResourceBundle.getBundle("org/kse/gui/crypto/policymapping/resources");

    private static final String CANCEL_KEY = "CANCEL_KEY";

    private JPanel jpPolicyMapping;
    private JLabel jlIssuerDomainPolicy;
    private JObjectId joiIssuerDomainPolicy;
    private JLabel jlSubjectDomainPolicy;
    private JObjectId joiSubjectDomainPolicy;
    private JPanel jpButtons;
    private JButton jbOK;
    private JButton jbCancel;

    private PolicyMapping policyMapping;

    /**
     * Constructs a new DPolicyMappingChooser dialog.
     *
     * @param parent        The parent frame
     * @param title         The dialog title
     * @param policyMapping Policy mapping
     */
    public DPolicyMappingChooser(JFrame parent, String title, PolicyMapping policyMapping) {
        super(parent, title, ModalityType.DOCUMENT_MODAL);
        initComponents(policyMapping);
    }

    /**
     * Constructs a new DPolicyMappingChooser dialog.
     *
     * @param parent        The parent dialog
     * @param title         The dialog title
     * @param policyMapping Policy mapping
     */
    public DPolicyMappingChooser(JDialog parent, String title, PolicyMapping policyMapping) {
        super(parent, title, Dialog.ModalityType.DOCUMENT_MODAL);
        initComponents(policyMapping);
    }

    private void initComponents(PolicyMapping policyMapping) {
        jlIssuerDomainPolicy = new JLabel(res.getString("DPolicyMappingChooser.jlIssuerDomainPolicy.text"));

        GridBagConstraints gbc_jlIssuerDomainPolicy = new GridBagConstraints();
        gbc_jlIssuerDomainPolicy.gridx = 0;
        gbc_jlIssuerDomainPolicy.gridy = 0;
        gbc_jlIssuerDomainPolicy.gridwidth = 1;
        gbc_jlIssuerDomainPolicy.gridheight = 1;
        gbc_jlIssuerDomainPolicy.insets = new Insets(5, 5, 5, 5);
        gbc_jlIssuerDomainPolicy.anchor = GridBagConstraints.EAST;

        joiIssuerDomainPolicy = new JObjectId(res.getString("DPolicyMappingChooser.IssuerDomainPolicy.Title"));
        joiIssuerDomainPolicy.setToolTipText(res.getString("DPolicyMappingChooser.joiIssuerDomainPolicy.tooltip"));

        GridBagConstraints gbc_joiIssuerDomainPolicy = new GridBagConstraints();
        gbc_joiIssuerDomainPolicy.gridx = 1;
        gbc_joiIssuerDomainPolicy.gridy = 0;
        gbc_joiIssuerDomainPolicy.gridwidth = 1;
        gbc_joiIssuerDomainPolicy.gridheight = 1;
        gbc_joiIssuerDomainPolicy.insets = new Insets(5, 5, 5, 5);
        gbc_joiIssuerDomainPolicy.anchor = GridBagConstraints.WEST;

        jlSubjectDomainPolicy = new JLabel(res.getString("DPolicyMappingChooser.jlSubjectDomainPolicy.text"));

        GridBagConstraints gbc_jlSubjectDomainPolicy = new GridBagConstraints();
        gbc_jlSubjectDomainPolicy.gridx = 0;
        gbc_jlSubjectDomainPolicy.gridy = 1;
        gbc_jlSubjectDomainPolicy.gridwidth = 1;
        gbc_jlSubjectDomainPolicy.gridheight = 1;
        gbc_jlSubjectDomainPolicy.insets = new Insets(5, 5, 5, 5);
        gbc_jlSubjectDomainPolicy.anchor = GridBagConstraints.EAST;

        joiSubjectDomainPolicy = new JObjectId(res.getString("DPolicyMappingChooser.SubjectDomainPolicy.Title"));
        joiSubjectDomainPolicy.setToolTipText(res.getString("DPolicyMappingChooser.joiSubjectDomainPolicy.tooltip"));

        GridBagConstraints gbc_joiSubjectDomainPolicy = new GridBagConstraints();
        gbc_joiSubjectDomainPolicy.gridx = 1;
        gbc_joiSubjectDomainPolicy.gridy = 1;
        gbc_joiSubjectDomainPolicy.gridwidth = 1;
        gbc_joiSubjectDomainPolicy.gridheight = 1;
        gbc_joiSubjectDomainPolicy.insets = new Insets(5, 5, 5, 5);
        gbc_joiSubjectDomainPolicy.anchor = GridBagConstraints.WEST;

        jpPolicyMapping = new JPanel(new GridBagLayout());

        jpPolicyMapping.setBorder(new CompoundBorder(new EmptyBorder(5, 5, 5, 5), new CompoundBorder(new EtchedBorder(),
                                                                                                     new EmptyBorder(5,
                                                                                                                     5,
                                                                                                                     5,
                                                                                                                     5))));

        jpPolicyMapping.add(jlIssuerDomainPolicy, gbc_jlIssuerDomainPolicy);
        jpPolicyMapping.add(joiIssuerDomainPolicy, gbc_joiIssuerDomainPolicy);
        jpPolicyMapping.add(jlSubjectDomainPolicy, gbc_jlSubjectDomainPolicy);
        jpPolicyMapping.add(joiSubjectDomainPolicy, gbc_joiSubjectDomainPolicy);

        jbOK = new JButton(res.getString("DPolicyMappingChooser.jbOK.text"));
        jbOK.addActionListener(evt -> okPressed());

        jbCancel = new JButton(res.getString("DPolicyMappingChooser.jbCancel.text"));
        jbCancel.addActionListener(evt -> cancelPressed());
        jbCancel.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW)
                .put(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), CANCEL_KEY);
        jbCancel.getActionMap().put(CANCEL_KEY, new AbstractAction() {
            private static final long serialVersionUID = 1L;

            @Override
            public void actionPerformed(ActionEvent evt) {
                cancelPressed();
            }
        });

        jpButtons = PlatformUtil.createDialogButtonPanel(jbOK, jbCancel);

        getContentPane().setLayout(new BorderLayout());
        getContentPane().add(BorderLayout.CENTER, jpPolicyMapping);
        getContentPane().add(BorderLayout.SOUTH, jpButtons);

        populate(policyMapping);

        setResizable(false);

        getRootPane().setDefaultButton(jbOK);

        pack();
    }

    private void populate(PolicyMapping policyMapping) {
        if (policyMapping != null) {

            ASN1ObjectIdentifier issuerDomainPolicy = policyMapping.getIssuerDomainPolicy();
            ASN1ObjectIdentifier subjectDomainPolicy = policyMapping.getSubjectDomainPolicy();
            joiIssuerDomainPolicy.setObjectId(issuerDomainPolicy);
            joiSubjectDomainPolicy.setObjectId(subjectDomainPolicy);
        }
    }

    /**
     * Get selected policy mapping.
     *
     * @return Policy mapping, or null if none
     */
    public PolicyMapping getPolicyMapping() {
        return policyMapping;
    }

    private void okPressed() {
        ASN1ObjectIdentifier issuerDomainPolicy = joiIssuerDomainPolicy.getObjectId();

        if (issuerDomainPolicy == null) {
            JOptionPane.showMessageDialog(this,
                                          res.getString("DPolicyMappingChooser.IssuerDomainPolicyValueReq.message"),
                                          getTitle(), JOptionPane.WARNING_MESSAGE);
            return;
        }

        ASN1ObjectIdentifier subjectDomainPolicy = joiSubjectDomainPolicy.getObjectId();

        if (subjectDomainPolicy == null) {
            JOptionPane.showMessageDialog(this,
                                          res.getString("DPolicyMappingChooser.SubjectDomainPolicyValueReq.message"),
                                          getTitle(), JOptionPane.WARNING_MESSAGE);
            return;
        }

        policyMapping = new PolicyMapping(issuerDomainPolicy, subjectDomainPolicy);

        closeDialog();
    }

    private void cancelPressed() {
        closeDialog();
    }

    private void closeDialog() {
        setVisible(false);
        dispose();
    }
}
