/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.apache.directory.shared.client.api.operations;


import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

import org.apache.directory.api.ldap.model.constants.SchemaConstants;
import org.apache.directory.api.ldap.model.csn.CsnFactory;
import org.apache.directory.api.ldap.model.entry.Attribute;
import org.apache.directory.api.ldap.model.entry.DefaultEntry;
import org.apache.directory.api.ldap.model.entry.Entry;
import org.apache.directory.api.ldap.model.entry.ModificationOperation;
import org.apache.directory.api.ldap.model.message.ModifyRequest;
import org.apache.directory.api.ldap.model.message.ModifyRequestImpl;
import org.apache.directory.api.ldap.model.message.ModifyResponse;
import org.apache.directory.api.ldap.model.message.ResultCodeEnum;
import org.apache.directory.api.ldap.model.name.Dn;
import org.apache.directory.api.util.DateUtils;
import org.apache.directory.api.util.Network;
import org.apache.directory.ldap.client.api.LdapNetworkConnection;
import org.apache.directory.ldap.client.api.future.ModifyFuture;
import org.apache.directory.server.annotations.CreateLdapServer;
import org.apache.directory.server.annotations.CreateTransport;
import org.apache.directory.server.core.annotations.ApplyLdifs;
import org.apache.directory.server.core.api.CoreSession;
import org.apache.directory.server.core.integ.AbstractLdapTestUnit;
import org.apache.directory.server.core.integ.FrameworkRunner;
import org.apache.directory.shared.client.api.LdapApiIntegrationUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;


/**
 * Tests the modify operation
 *
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 */
@RunWith(FrameworkRunner.class)
@CreateLdapServer(transports =
    { @CreateTransport(protocol = "LDAP"), @CreateTransport(protocol = "LDAPS") })
@ApplyLdifs(
    {
        "dn: uid=billyd,ou=users,ou=system",
        "objectClass: person",
        "objectClass: organizationalPerson",
        "objectClass: inetOrgPerson",
        "uid: billyd",
        "userPassword: secret",
        "sn: billyd",
        "cn: billyd"
})
public class ClientModifyRequestTest extends AbstractLdapTestUnit
{
private LdapNetworkConnection connection;
private CoreSession session;


@Before
public void setup() throws Exception
{
    connection = (LdapNetworkConnection)LdapApiIntegrationUtils.getPooledAdminConnection( getLdapServer() );
    session = getLdapServer().getDirectoryService().getAdminSession();
}


@After
public void shutdown() throws Exception
{
    LdapApiIntegrationUtils.releasePooledAdminConnection( connection, getLdapServer() );
}


@Test
public void testModify() throws Exception
{
    Dn dn = new Dn( "uid=admin,ou=system" );

    String expected = String.valueOf( System.currentTimeMillis() );
    ModifyRequest modRequest = new ModifyRequestImpl();
    modRequest.setName( dn );
    modRequest.replace( SchemaConstants.SN_AT, expected );

    connection.modify( modRequest );

    Entry entry = session.lookup( dn );

    String actual = entry.get( SchemaConstants.SN_AT ).getString();

    assertEquals( expected, actual );
}


@Test
public void testModifyWithEntry() throws Exception
{
    Dn dn = new Dn( "uid=admin,ou=system" );

    Entry entry = new DefaultEntry( dn );

    String expectedSn = String.valueOf( System.currentTimeMillis() );
    String expectedCn = String.valueOf( System.currentTimeMillis() );

    entry.add( SchemaConstants.SN_AT, expectedSn );

    entry.add( SchemaConstants.CN_AT, expectedCn );

    connection.modify( entry, ModificationOperation.REPLACE_ATTRIBUTE );

    Entry lookupEntry = session.lookup( dn );

    String actualSn = lookupEntry.get( SchemaConstants.SN_AT ).getString();
    assertEquals( expectedSn, actualSn );

    String actualCn = lookupEntry.get( SchemaConstants.CN_AT ).getString();
    assertEquals( expectedCn, actualCn );
}


@Test
public void testModifyReplaceRemove() throws Exception
{
    Dn dn = new Dn( "uid=admin,ou=system" );

    Entry entry = new DefaultEntry( dn );

    entry.add( "givenName", "test" );

    connection.modify( entry, ModificationOperation.REPLACE_ATTRIBUTE );

    Entry lookupEntry = session.lookup( dn );

    String gn = lookupEntry.get( "givenName" ).getString();
    assertEquals( "test", gn );

    // Now, replace the givenName
    ModifyRequest modifyRequest = new ModifyRequestImpl();
    modifyRequest.setName( dn );
    modifyRequest.replace( "givenName" );
    connection.modify( modifyRequest );

    lookupEntry = session.lookup( dn );
    Attribute giveName = lookupEntry.get( "givenName" );
    assertNull( giveName );
}


@Test
public void modifyAsync() throws Exception
{
    Dn dn = new Dn( "uid=admin,ou=system" );

    String expected = String.valueOf( System.currentTimeMillis() );
    ModifyRequest modifyRequest = new ModifyRequestImpl();
    modifyRequest.setName( dn );
    modifyRequest.replace( SchemaConstants.SN_AT, expected );

    assertTrue( session.exists( dn ) );

    ModifyFuture modifyFuture = connection.modifyAsync( modifyRequest );

    ModifyResponse response = modifyFuture.get( 1000, TimeUnit.MILLISECONDS );

    assertNotNull( response );

    Entry entry = session.lookup( dn );

    String actual = entry.get( SchemaConstants.SN_AT ).getString();

    assertEquals( expected, actual );

    assertTrue( connection.isAuthenticated() );
    assertTrue( session.exists( dn ) );
}


/**
 * ApacheDS doesn't allow modifying entryUUID and entryCSN AT
 */
@Test
public void testModifyEntryUUIDAndEntryCSN() throws Exception
{
    Dn dn = new Dn( "uid=admin,ou=system" );

    ModifyRequest modifyRequest = new ModifyRequestImpl();
    modifyRequest.setName( dn );
    modifyRequest.replace( SchemaConstants.ENTRY_UUID_AT, UUID.randomUUID().toString() );

    ModifyResponse modResp = connection.modify( modifyRequest );
    assertEquals( ResultCodeEnum.INSUFFICIENT_ACCESS_RIGHTS, modResp.getLdapResult().getResultCode() );

    modifyRequest = new ModifyRequestImpl();
    modifyRequest.setName( dn );
    modifyRequest.replace( SchemaConstants.ENTRY_CSN_AT, new CsnFactory( 0 ).newInstance().toString() );

    // admin can modify the entryCsn
    modResp = connection.modify( modifyRequest );
    assertEquals( ResultCodeEnum.SUCCESS, modResp.getLdapResult().getResultCode() );

    LdapNetworkConnection nonAdminConnection = new LdapNetworkConnection( Network.LOOPBACK_HOSTNAME, getLdapServer().getPort() );

    Dn bindDn = new Dn( "uid=billyd,ou=users,ou=system" );
    nonAdminConnection.bind( bindDn.getName(), "secret" );

    // non-admin user cannot modify entryCSN
    modResp = nonAdminConnection.modify( modifyRequest );
    assertEquals( ResultCodeEnum.INSUFFICIENT_ACCESS_RIGHTS, modResp.getLdapResult().getResultCode() );

    nonAdminConnection.close();
}


/**
 * ApacheDS allows modifying the modifiersName and modifyTimestamp operational AT
 */
@Test
public void testModifyModifierNameAndModifyTimestamp() throws Exception
{
    Dn dn = new Dn( "uid=admin,ou=system" );

    String modifierName = "uid=x,ou=system";
    String modifiedTime = DateUtils.getGeneralizedTime();

    ModifyRequest modifyRequest = new ModifyRequestImpl();
    modifyRequest.setName( dn );
    modifyRequest.replace( SchemaConstants.MODIFIERS_NAME_AT, modifierName );
    modifyRequest.replace( SchemaConstants.MODIFY_TIMESTAMP_AT, modifiedTime );

    ModifyResponse modResp = connection.modify( modifyRequest );
    assertEquals( ResultCodeEnum.SUCCESS, modResp.getLdapResult().getResultCode() );

    Entry loadedEntry = connection.lookup( dn.getName(), "+" );

    assertEquals( modifierName, loadedEntry.get( SchemaConstants.MODIFIERS_NAME_AT ).getString() );
    assertEquals( modifiedTime, loadedEntry.get( SchemaConstants.MODIFY_TIMESTAMP_AT ).getString() );
}

}
