/*
 * Copyright 2018 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jbpm.process.workitem.camel;

import java.io.File;
import java.io.IOException;
import java.net.URISyntaxException;

import org.apache.commons.io.FileUtils;
import org.apache.ftpserver.DataConnectionConfigurationFactory;
import org.apache.ftpserver.FtpServer;
import org.apache.ftpserver.ftplet.FtpException;
import org.apache.ftpserver.listener.ListenerFactory;
import org.apache.ftpserver.ssl.SslConfiguration;
import org.apache.ftpserver.ssl.SslConfigurationFactory;
import org.drools.core.process.instance.WorkItem;
import org.drools.core.process.instance.impl.DefaultWorkItemManager;
import org.drools.core.process.instance.impl.WorkItemImpl;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
import org.kie.api.runtime.process.WorkItemManager;

public class CamelFtpsTest extends CamelFtpBaseTest {

    private static final String CLIENT_SSL_STORE_PASSWD = "passwd";
    private static final String SERVER_SSL_STORE_PASSWD = "passwd";
    private static final String CLIENT_SSL_KEY_PASSWD = "passwd";
    private static final String SERVER_SSL_KEY_PASSWD = "passwd";

    private static File SERVER_SSL_KEY_TRUST_STORE;
    private static File CLIENT_SSL_KEY_TRUST_STORE;

    @BeforeClass
    public static void setupKeyTrustStores() throws URISyntaxException {
        CLIENT_SSL_KEY_TRUST_STORE = new File(CamelFtpsTest.class.getResource("/ssl/client.jks").toURI());
        SERVER_SSL_KEY_TRUST_STORE = new File(CamelFtpsTest.class.getResource("/ssl/server.jks").toURI());
    }

    @Test
    public void testFtps() throws IOException {
        FTPSCamelWorkitemHandler handler = new FTPSCamelWorkitemHandler();
        handler.setLogThrownException(true);

        final String testData = "test-data";

        final WorkItem workItem = new WorkItemImpl();
        workItem.setParameter("username",
                              USER);
        workItem.setParameter("password",
                              PASSWD);
        workItem.setParameter("hostname",
                              HOST);
        workItem.setParameter("port",
                              PORT.toString());
        workItem.setParameter("directoryname",
                              testFile.getParentFile().getName());
        workItem.setParameter("CamelFileName",
                              testFile.getName());
        workItem.setParameter("payload",
                              testData);

        workItem.setParameter("isImplicit",
                              "true");
        workItem.setParameter("securityProtocol",
                              "TLS");

        // needed for SSL
        workItem.setParameter("ftpClient.trustStore.file",
                              CLIENT_SSL_KEY_TRUST_STORE.getAbsolutePath());
        workItem.setParameter("ftpClient.trustStore.password",
                              CLIENT_SSL_STORE_PASSWD);
        workItem.setParameter("ftpClient.trustStore.keyPassword",
                              CLIENT_SSL_KEY_PASSWD);

        workItem.setParameter("ftpClient.keyStore.file",
                              CLIENT_SSL_KEY_TRUST_STORE.getAbsolutePath());
        workItem.setParameter("ftpClient.keyStore.password",
                              CLIENT_SSL_STORE_PASSWD);
        workItem.setParameter("ftpClient.keyStore.keyPassword",
                              CLIENT_SSL_KEY_PASSWD);

        WorkItemManager manager = new DefaultWorkItemManager(null);
        handler.executeWorkItem(workItem,
                                manager);

        // assertions
        Assert.assertTrue("Expected file does not exist.",
                          testFile.exists());

        String resultText = FileUtils.readFileToString(testFile);
        Assert.assertEquals(resultText,
                            testData);
    }

    @Override
    protected FtpServer configureFtpServer(CamelFtpBaseTest.FtpServerBuilder builder) throws FtpException {
        ListenerFactory listenerFactory = configureSSL();

        return builder.addUser(USER,
                               PASSWD,
                               ftpRoot,
                               true).registerDefaultListener(listenerFactory.createListener()).build();
    }

    private ListenerFactory configureSSL() {
        ListenerFactory listener = new ListenerFactory();
        listener.setServerAddress("127.0.0.1");
        listener.setPort(PORT);

        SslConfigurationFactory ssl = new SslConfigurationFactory();
        ssl.setKeystoreFile(SERVER_SSL_KEY_TRUST_STORE);
        ssl.setKeyPassword(SERVER_SSL_KEY_PASSWD);
        ssl.setKeystorePassword(SERVER_SSL_STORE_PASSWD);
        ssl.setTruststoreFile(SERVER_SSL_KEY_TRUST_STORE);
        ssl.setTruststorePassword(SERVER_SSL_STORE_PASSWD);
        ssl.setClientAuthentication("NEED");

        SslConfiguration sslConfig = ssl.createSslConfiguration();

        listener.setSslConfiguration(sslConfig);
        listener.setImplicitSsl(true);
        DataConnectionConfigurationFactory dataConfigFactory = new DataConnectionConfigurationFactory();
        dataConfigFactory.setImplicitSsl(true);

        listener.setDataConnectionConfiguration(dataConfigFactory.createDataConnectionConfiguration());

        return listener;
    }
}