/*
 * 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.actions;

import java.awt.Toolkit;
import java.security.Key;
import java.security.KeyStore;
import java.security.cert.X509Certificate;

import javax.swing.ImageIcon;
import javax.swing.JOptionPane;

import org.kse.gui.passwordmanager.Password;
import org.kse.crypto.x509.X509CertUtil;
import org.kse.gui.KseFrame;
import org.kse.gui.error.DError;
import org.kse.utilities.history.HistoryAction;
import org.kse.utilities.history.KeyStoreHistory;
import org.kse.utilities.history.KeyStoreState;

/**
 * Action to remove from the selected key pair entry's certificate chain.
 */
public class RemoveFromCertificateChainAction extends KeyStoreExplorerAction implements HistoryAction {
    private static final long serialVersionUID = 1L;

    /**
     * Construct action.
     *
     * @param kseFrame KeyStore Explorer frame
     */
    public RemoveFromCertificateChainAction(KseFrame kseFrame) {
        super(kseFrame);

        putValue(LONG_DESCRIPTION, res.getString("RemoveFromCertificateChainAction.statusbar"));
        putValue(NAME, res.getString("RemoveFromCertificateChainAction.text"));
        putValue(SHORT_DESCRIPTION, res.getString("RemoveFromCertificateChainAction.tooltip"));
        putValue(SMALL_ICON, new ImageIcon(
                Toolkit.getDefaultToolkit().createImage(getClass().getResource("images/removecert.png"))));
    }

    @Override
    public String getHistoryDescription() {
        return (String) getValue(NAME);
    }

    /**
     * Do action.
     */
    @Override
    protected void doAction() {
        try {
            KeyStoreHistory history = kseFrame.getActiveKeyStoreHistory();
            KeyStoreState currentState = history.getCurrentState();

            String alias = kseFrame.getSelectedEntryAlias();

            Password password = getEntryPassword(alias, currentState);

            if (password == null) {
                return;
            }

            KeyStoreState newState = currentState.createBasisForNextState(this);

            KeyStore keyStore = newState.getKeyStore();

            Key privKey = keyStore.getKey(alias, password.toCharArray());

            X509Certificate[] certChain = X509CertUtil.orderX509CertChain(
                    X509CertUtil.convertCertificates(keyStore.getCertificateChain(alias)));

            if (certChain.length == 1) {
                JOptionPane.showMessageDialog(frame, res.getString(
                                                      "RemoveFromCertificateChainAction.CannotRemoveOnlyCert.message"), res.getString(
                                                      "RemoveFromCertificateChainAction.RemoveFromCertificateChain" +
                                                      ".Title"),
                                              JOptionPane.WARNING_MESSAGE);
                return;
            }

            // Certificate to remove is the end one in the chain
            X509Certificate[] newCertChain = new X509Certificate[certChain.length - 1];

            System.arraycopy(certChain, 0, newCertChain, 0, newCertChain.length);

            keyStore.deleteEntry(alias);

            keyStore.setKeyEntry(alias, privKey, password.toCharArray(), newCertChain);

            currentState.append(newState);

            kseFrame.updateControls(true);

            JOptionPane.showMessageDialog(frame, res.getString(
                                                  "RemoveFromCertificateChainAction.RemoveFromCertificateChainSuccessful.message"), res.getString(
                                                  "RemoveFromCertificateChainAction.RemoveFromCertificateChain.Title"),
                                          JOptionPane.INFORMATION_MESSAGE);
        } catch (Exception ex) {
            DError.displayError(frame, ex);
        }
    }
}
