// --- BEGIN COPYRIGHT BLOCK ---
// This program 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; version 2 of the License.
//
// This program 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 this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2016 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.cmstools.pkcs12;

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;
import org.mozilla.jss.util.Password;

import com.netscape.cmstools.cli.CLI;
import com.netscape.cmstools.cli.MainCLI;

import netscape.security.pkcs.PKCS12Util;

/**
 * Tool for exporting NSS database into PKCS #12 file
 */
public class PKCS12ExportCLI extends CLI {

    public PKCS12ExportCLI(PKCS12CLI certCLI) {
        super("export", "Export NSS database into PKCS #12 file", certCLI);

        createOptions();
    }

    public void printHelp() {
        formatter.printHelp(getFullName() + " [OPTIONS...]", options);
    }

    public void createOptions() {
        Option option = new Option(null, "pkcs12", true, "PKCS #12 file");
        option.setArgName("path");
        options.addOption(option);

        option = new Option(null, "pkcs12-password", true, "PKCS #12 password");
        option.setArgName("password");
        options.addOption(option);

        option = new Option(null, "pkcs12-password-file", true, "PKCS #12 password file");
        option.setArgName("path");
        options.addOption(option);

        options.addOption(null, "no-trust-flags", false, "Do not include trust flags");

        options.addOption("v", "verbose", false, "Run in verbose mode.");
        options.addOption(null, "debug", false, "Run in debug mode.");
        options.addOption(null, "help", false, "Show help message.");
    }

    public void execute(String[] args) throws Exception {

        CommandLine cmd = null;

        try {
            cmd = parser.parse(options, args, true);
        } catch (Exception e) {
            System.err.println("Error: " + e.getMessage());
            printHelp();
            System.exit(-1);
        }

        if (cmd.hasOption("help")) {
            printHelp();
            System.exit(0);
        }

        if (cmd.hasOption("verbose")) {
            Logger.getLogger("org.dogtagpki").setLevel(Level.INFO);
            Logger.getLogger("com.netscape").setLevel(Level.INFO);
            Logger.getLogger("netscape").setLevel(Level.INFO);

        } else if (cmd.hasOption("debug")) {
            Logger.getLogger("org.dogtagpki").setLevel(Level.FINE);
            Logger.getLogger("com.netscape").setLevel(Level.FINE);
            Logger.getLogger("netscape").setLevel(Level.FINE);
        }

        String filename = cmd.getOptionValue("pkcs12");

        if (filename == null) {
            System.err.println("Error: Missing PKCS #12 file.");
            printHelp();
            System.exit(-1);
        }

        String passwordString = cmd.getOptionValue("pkcs12-password");

        if (passwordString == null) {

            String passwordFile = cmd.getOptionValue("pkcs12-password-file");
            if (passwordFile != null) {
                try (BufferedReader in = new BufferedReader(new FileReader(passwordFile))) {
                    passwordString = in.readLine();
                }
            }
        }

        if (passwordString == null) {
            System.err.println("Error: Missing PKCS #12 password.");
            printHelp();
            System.exit(-1);
        }

        Password password = new Password(passwordString.toCharArray());

        boolean trustFlagsEnabled = !cmd.hasOption("no-trust-flags");

        try {
            PKCS12Util util = new PKCS12Util();
            util.setTrustFlagsEnabled(trustFlagsEnabled);
            util.exportData(filename, password);
        } finally {
            password.clear();
        }

        MainCLI.printMessage("Export complete");
    }
}