//
// Copyright Red Hat, Inc.
//
// SPDX-License-Identifier: GPL-2.0-or-later
//
package org.dogtagpki.server.cli;

import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;
import org.apache.commons.io.IOUtils;
import org.apache.tomcat.util.net.jss.TomcatJSS;
import org.dogtagpki.cli.CLI;
import org.dogtagpki.cli.CommandCLI;
import org.mozilla.jss.netscape.security.util.Cert;
import org.mozilla.jss.netscape.security.x509.X509CertImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.netscape.cmscore.apps.CMS;
import com.netscape.cmscore.apps.EngineConfig;
import com.netscape.cmscore.base.ConfigStorage;
import com.netscape.cmscore.base.FileConfigStore;
import com.netscape.cmscore.ldapconn.LDAPAuthenticationConfig;
import com.netscape.cmscore.ldapconn.LDAPConfig;
import com.netscape.cmscore.ldapconn.LDAPConnectionConfig;
import com.netscape.cmscore.ldapconn.LdapAuthInfo;
import com.netscape.cmscore.ldapconn.LdapConnInfo;
import com.netscape.cmscore.ldapconn.PKISocketConfig;
import com.netscape.cmscore.ldapconn.PKISocketFactory;
import com.netscape.cmscore.usrgrp.UGSubsystem;
import com.netscape.cmscore.usrgrp.UGSubsystemConfig;
import com.netscape.cmsutil.password.IPasswordStore;
import com.netscape.cmsutil.password.PasswordStoreConfig;

/**
 * @author Endi S. Dewata
 */
public class SubsystemUserCertAddCLI extends CommandCLI {

    public static Logger logger = LoggerFactory.getLogger(SubsystemUserCertAddCLI.class);

    public SubsystemUserCertAddCLI(CLI parent) {
        super("add", "Add " + parent.getParent().getParent().getName().toUpperCase() + " user cert", parent);
    }

    @Override
    public void createOptions() {
        Option option = new Option(null, "cert", true, "Certificate to add");
        option.setArgName("path");
        options.addOption(option);

        option = new Option(null, "format", true, "Certificate format: PEM (default), DER");
        option.setArgName("format");
        options.addOption(option);
    }

    @Override
    public void execute(CommandLine cmd) throws Exception {

        String[] cmdArgs = cmd.getArgs();

        if (cmdArgs.length < 1) {
            throw new Exception("Missing user ID");
        }

        String userID = cmdArgs[0];

        String filename = cmd.getOptionValue("cert");
        String format = cmd.getOptionValue("format");

        String catalinaBase = System.getProperty("catalina.base");

        TomcatJSS tomcatjss = TomcatJSS.getInstance();
        tomcatjss.loadConfig();
        tomcatjss.init();

        byte[] bytes;
        if (filename == null) {
            // read from standard input
            bytes = IOUtils.toByteArray(System.in);

        } else {
            // read from file
            bytes = Files.readAllBytes(Paths.get(filename));
        }

        if (format == null || "PEM".equalsIgnoreCase(format)) {
            bytes = Cert.parseCertificate(new String(bytes));

        } else if ("DER".equalsIgnoreCase(format)) {
            // nothing to do

        } else {
            throw new Exception("Unsupported format: " + format);
        }

        X509CertImpl cert = new X509CertImpl(bytes);

        String subsystem = parent.getParent().getParent().getName();
        String configDir = catalinaBase + File.separator + subsystem;
        String configFile = configDir+ File.separator + "conf" + File.separator + CMS.CONFIG_FILE;

        logger.info("Loading " + configFile);
        ConfigStorage storage = new FileConfigStore(configFile);
        EngineConfig cs = new EngineConfig(storage);
        cs.load();
        LDAPConfig ldapConfig = cs.getInternalDBConfig();

        PasswordStoreConfig psc = cs.getPasswordStoreConfig();
        IPasswordStore passwordStore = IPasswordStore.create(psc);

        LDAPConnectionConfig connConfig = ldapConfig.getConnectionConfig();
        LDAPAuthenticationConfig authConfig = ldapConfig.getAuthenticationConfig();

        LdapConnInfo connInfo = new LdapConnInfo(connConfig);

        LdapAuthInfo authInfo = new LdapAuthInfo();
        authInfo.setPasswordStore(passwordStore);
        authInfo.init(
                authConfig,
                connInfo.getHost(),
                connInfo.getPort(),
                connInfo.getSecure());

        PKISocketConfig socketConfig = cs.getSocketConfig();

        PKISocketFactory socketFactory;
        if (authInfo.getAuthType() == LdapAuthInfo.LDAP_AUTHTYPE_SSLCLIENTAUTH) {
            socketFactory = new PKISocketFactory(authInfo.getClientCertNickname());
        } else {
            socketFactory = new PKISocketFactory(connInfo.getSecure());
        }
        socketFactory.init(socketConfig);

        UGSubsystemConfig ugConfig = cs.getUGSubsystemConfig();
        UGSubsystem ugSubsystem = new UGSubsystem();

        try {
            ugSubsystem.init(socketConfig, ugConfig, passwordStore);
            ugSubsystem.addUserCert(userID, cert);

        } finally {
            ugSubsystem.shutdown();
        }
    }
}
