/*
 *  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.api.ldap.extras.extended.ads_impl.gracefulDisconnect;


import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.nio.ByteBuffer;
import java.util.Iterator;

import org.apache.directory.api.asn1.DecoderException;
import org.apache.directory.api.asn1.EncoderException;
import org.apache.directory.api.asn1.ber.Asn1Decoder;
import org.apache.directory.api.ldap.extras.extended.ads_impl.gracefulDisconnect.GracefulDisconnectContainer;
import org.apache.directory.api.ldap.extras.extended.ads_impl.gracefulDisconnect.GracefulDisconnectDecoder;
import org.apache.directory.api.ldap.extras.extended.ads_impl.gracefulDisconnect.GracefulDisconnectResponseDecorator;
import org.apache.directory.api.util.Strings;
import org.junit.Test;
import org.junit.runner.RunWith;

import com.mycila.junit.concurrent.Concurrency;
import com.mycila.junit.concurrent.ConcurrentJunitRunner;


/**
 * Test the GracefulDisconnectTest codec
 *
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 */
@RunWith(ConcurrentJunitRunner.class)
@Concurrency()
public class GracefulDisconnectResponseTest
{
    /**
     * Test the decoding of a GracefulDisconnect
     */
    @Test
    public void testDecodeGracefulDisconnectSuccess()
    {
        Asn1Decoder decoder = new GracefulDisconnectDecoder();
        ByteBuffer stream = ByteBuffer.allocate( 0x70 );
        stream.put( new byte[]
            { 0x30, 0x6E, // GracefulDisconnec ::= SEQUENCE {
                0x02,
                0x01,
                0x01, // timeOffline INTEGER (0..720) DEFAULT 0,
                ( byte ) 0x80,
                0x01,
                0x01, // delay INTEGER (0..86400) DEFAULT
                      // 0
                // replicatedContexts Referral OPTIONAL
                0x30,
                0x66,
                0x04,
                0x1F,
                'l',
                'd',
                'a',
                'p',
                ':',
                '/',
                '/',
                'd',
                'i',
                'r',
                'e',
                'c',
                't',
                'o',
                'r',
                'y',
                '.',
                'a',
                'p',
                'a',
                'c',
                'h',
                'e',
                '.',
                'o',
                'r',
                'g',
                ':',
                '8',
                '0',
                '/',
                0x04,
                0x43,
                'l',
                'd',
                'a',
                'p',
                ':',
                '/',
                '/',
                'l',
                'd',
                'a',
                'p',
                '.',
                'n',
                'e',
                't',
                's',
                'c',
                'a',
                'p',
                'e',
                '.',
                'c',
                'o',
                'm',
                '/',
                'o',
                '=',
                'B',
                'a',
                'b',
                's',
                'c',
                'o',
                ',',
                'c',
                '=',
                'U',
                'S',
                '?',
                '?',
                '?',
                '(',
                'i',
                'n',
                't',
                '=',
                '%',
                '5',
                'c',
                '0',
                '0',
                '%',
                '5',
                'c',
                '0',
                '0',
                '%',
                '5',
                'c',
                '0',
                '0',
                '%',
                '5',
                'c',
                '0',
                '4',
                ')'
            // }
        } );
        String decodedPdu = Strings.dumpBytes( stream.array() );
        stream.flip();

        GracefulDisconnectContainer container = new GracefulDisconnectContainer();

        try
        {
            decoder.decode( stream, container );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        GracefulDisconnectResponseDecorator gracefulDisconnect = container.getGracefulDisconnectResponse();
        assertEquals( 1, gracefulDisconnect.getTimeOffline() );
        assertEquals( 1, gracefulDisconnect.getDelay() );
        assertEquals( 2, gracefulDisconnect.getReplicatedContexts().getLdapUrls().size() );
        
        Iterator<String> ldapUrls = gracefulDisconnect.getReplicatedContexts().getLdapUrls().iterator();
        assertEquals( "ldap://directory.apache.org:80/", ldapUrls.next() );
        assertEquals( "ldap://ldap.netscape.com/o=Babsco,c=US???(int=%5c00%5c00%5c00%5c04)", ldapUrls.next() );

        // Check the length
        assertEquals( 0x70, gracefulDisconnect.computeLengthInternal() );

        // Check the encoding
        try
        {
            ByteBuffer bb = gracefulDisconnect.encodeInternal();

            String encodedPdu = Strings.dumpBytes( bb.array() );

            assertEquals( encodedPdu, decodedPdu );
        }
        catch ( EncoderException ee )
        {
            ee.printStackTrace();
            fail( ee.getMessage() );
        }
    }


    /**
     * Test the decoding of a GracefulDisconnect with a timeOffline only
     */
    @Test
    public void testDecodeGracefulDisconnectTimeOffline()
    {
        Asn1Decoder decoder = new GracefulDisconnectDecoder();
        ByteBuffer bb = ByteBuffer.allocate( 0x05 );
        bb.put( new byte[]
            { 0x30, 0x03, // GracefulDisconnect ::= SEQUENCE {
                0x02,
                0x01,
                0x01 // timeOffline INTEGER (0..720) DEFAULT 0,
        } );

        String decodedPdu = Strings.dumpBytes( bb.array() );
        bb.flip();

        GracefulDisconnectContainer container = new GracefulDisconnectContainer();

        try
        {
            decoder.decode( bb, container );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        GracefulDisconnectResponseDecorator gracefulDisconnect = container.getGracefulDisconnectResponse();
        assertEquals( 1, gracefulDisconnect.getTimeOffline() );
        assertEquals( 0, gracefulDisconnect.getDelay() );
        assertEquals( 0, gracefulDisconnect.getReplicatedContexts().getLdapUrls().size() );

        // Check the length
        assertEquals( 0x05, gracefulDisconnect.computeLengthInternal() );

        // Check the encoding
        try
        {
            ByteBuffer bb1 = gracefulDisconnect.encodeInternal();

            String encodedPdu = Strings.dumpBytes( bb1.array() );

            assertEquals( encodedPdu, decodedPdu );
        }
        catch ( EncoderException ee )
        {
            ee.printStackTrace();
            fail( ee.getMessage() );
        }
    }


    /**
     * Test the decoding of a GracefulDisconnect with a delay only
     */
    @Test
    public void testDecodeGracefulDisconnectDelay()
    {
        Asn1Decoder decoder = new GracefulDisconnectDecoder();
        ByteBuffer bb = ByteBuffer.allocate( 0x05 );
        bb.put( new byte[]
            { 0x30, 0x03, // GracefulDisconnect ::= SEQUENCE {
                ( byte ) 0x80,
                0x01,
                0x01 // delay INTEGER (0..86400) DEFAULT
                     // 0
        } );

        String decodedPdu = Strings.dumpBytes( bb.array() );
        bb.flip();

        GracefulDisconnectContainer container = new GracefulDisconnectContainer();

        try
        {
            decoder.decode( bb, container );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        GracefulDisconnectResponseDecorator gracefulDisconnect = container.getGracefulDisconnectResponse();
        assertEquals( 0, gracefulDisconnect.getTimeOffline() );
        assertEquals( 1, gracefulDisconnect.getDelay() );
        assertEquals( 0, gracefulDisconnect.getReplicatedContexts().getLdapUrls().size() );

        // Check the length
        assertEquals( 0x05, gracefulDisconnect.computeLengthInternal() );

        // Check the encoding
        try
        {
            ByteBuffer bb1 = gracefulDisconnect.encodeInternal();

            String encodedPdu = Strings.dumpBytes( bb1.array() );

            assertEquals( encodedPdu, decodedPdu );
        }
        catch ( EncoderException ee )
        {
            ee.printStackTrace();
            fail( ee.getMessage() );
        }
    }


    /**
     * Test the decoding of a GracefulDisconnect with a timeOffline and a delay
     */
    @Test
    public void testDecodeGracefulDisconnectTimeOfflineDelay()
    {
        Asn1Decoder decoder = new GracefulDisconnectDecoder();
        ByteBuffer bb = ByteBuffer.allocate( 0x08 );
        bb.put( new byte[]
            { 0x30, 0x06, // GracefulDisconnect ::= SEQUENCE {
                0x02,
                0x01,
                0x01, // timeOffline INTEGER (0..720) DEFAULT 0,
                ( byte ) 0x80,
                0x01,
                0x01, // timeOffline INTEGER (0..720)
                      // DEFAULT 0,
            } );

        String decodedPdu = Strings.dumpBytes( bb.array() );
        bb.flip();

        GracefulDisconnectContainer container = new GracefulDisconnectContainer();

        try
        {
            decoder.decode( bb, container );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        GracefulDisconnectResponseDecorator gracefulDisconnect = container.getGracefulDisconnectResponse();
        assertEquals( 1, gracefulDisconnect.getTimeOffline() );
        assertEquals( 1, gracefulDisconnect.getDelay() );
        assertEquals( 0, gracefulDisconnect.getReplicatedContexts().getLdapUrls().size() );

        // Check the length
        assertEquals( 0x08, gracefulDisconnect.computeLengthInternal() );

        // Check the encoding
        try
        {
            ByteBuffer bb2 = gracefulDisconnect.encodeInternal();

            String encodedPdu = Strings.dumpBytes( bb2.array() );

            assertEquals( encodedPdu, decodedPdu );
        }
        catch ( EncoderException ee )
        {
            ee.printStackTrace();
            fail( ee.getMessage() );
        }
    }


    /**
     * Test the decoding of a GracefulDisconnect with replicatedContexts only
     */
    @Test
    public void testDecodeGracefulDisconnectReplicatedContextsOnly()
    {
        Asn1Decoder decoder = new GracefulDisconnectDecoder();
        ByteBuffer stream = ByteBuffer.allocate( 0x6A );
        stream.put( new byte[]
            {
                0x30, 0x68, // GracefulDisconnec ::= SEQUENCE {
                0x30,
                0x66, // replicatedContexts Referral OPTIONAL
                0x04,
                0x1F,
                'l',
                'd',
                'a',
                'p',
                ':',
                '/',
                '/',
                'd',
                'i',
                'r',
                'e',
                'c',
                't',
                'o',
                'r',
                'y',
                '.',
                'a',
                'p',
                'a',
                'c',
                'h',
                'e',
                '.',
                'o',
                'r',
                'g',
                ':',
                '8',
                '0',
                '/',
                0x04,
                0x43,
                'l',
                'd',
                'a',
                'p',
                ':',
                '/',
                '/',
                'l',
                'd',
                'a',
                'p',
                '.',
                'n',
                'e',
                't',
                's',
                'c',
                'a',
                'p',
                'e',
                '.',
                'c',
                'o',
                'm',
                '/',
                'o',
                '=',
                'B',
                'a',
                'b',
                's',
                'c',
                'o',
                ',',
                'c',
                '=',
                'U',
                'S',
                '?',
                '?',
                '?',
                '(',
                'i',
                'n',
                't',
                '=',
                '%',
                '5',
                'c',
                '0',
                '0',
                '%',
                '5',
                'c',
                '0',
                '0',
                '%',
                '5',
                'c',
                '0',
                '0',
                '%',
                '5',
                'c',
                '0',
                '4',
                ')'
        } );

        String decodedPdu = Strings.dumpBytes( stream.array() );
        stream.flip();

        GracefulDisconnectContainer container = new GracefulDisconnectContainer();

        try
        {
            decoder.decode( stream, container );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        GracefulDisconnectResponseDecorator gracefulDisconnect = container.getGracefulDisconnectResponse();
        assertEquals( 0, gracefulDisconnect.getTimeOffline() );
        assertEquals( 0, gracefulDisconnect.getDelay() );
        assertEquals( 2, gracefulDisconnect.getReplicatedContexts().getLdapUrls().size() );
        
        Iterator<String> ldapUrls = gracefulDisconnect.getReplicatedContexts().getLdapUrls().iterator();
        assertEquals( "ldap://directory.apache.org:80/", ldapUrls.next() );
        assertEquals( "ldap://ldap.netscape.com/o=Babsco,c=US???(int=%5c00%5c00%5c00%5c04)", ldapUrls.next() );

        // Check the length
        assertEquals( 0x6A, gracefulDisconnect.computeLengthInternal() );

        // Check the encoding
        try
        {
            ByteBuffer bb = gracefulDisconnect.encodeInternal();

            String encodedPdu = Strings.dumpBytes( bb.array() );

            assertEquals( encodedPdu, decodedPdu );
        }
        catch ( EncoderException ee )
        {
            ee.printStackTrace();
            fail( ee.getMessage() );
        }
    }


    /**
     * Test the decoding of a empty GracefulDisconnect
     */
    @Test
    public void testDecodeGracefulDisconnectEmpty()
    {
        Asn1Decoder decoder = new GracefulDisconnectDecoder();
        ByteBuffer bb = ByteBuffer.allocate( 0x02 );
        bb.put( new byte[]
            { 0x30, 0x00 // GracefulDisconnect ::= SEQUENCE {
        } );

        String decodedPdu = Strings.dumpBytes( bb.array() );
        bb.flip();

        GracefulDisconnectContainer container = new GracefulDisconnectContainer();

        try
        {
            decoder.decode( bb, container );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        GracefulDisconnectResponseDecorator gracefulDisconnect = container.getGracefulDisconnectResponse();
        assertEquals( 0, gracefulDisconnect.getTimeOffline() );
        assertEquals( 0, gracefulDisconnect.getDelay() );
        assertEquals( 0, gracefulDisconnect.getReplicatedContexts().getLdapUrls().size() );

        // Check the length
        assertEquals( 0x02, gracefulDisconnect.computeLengthInternal() );

        // Check the encoding
        try
        {
            ByteBuffer bb1 = gracefulDisconnect.encodeInternal();

            String encodedPdu = Strings.dumpBytes( bb1.array() );

            assertEquals( encodedPdu, decodedPdu );
        }
        catch ( EncoderException ee )
        {
            ee.printStackTrace();
            fail( ee.getMessage() );
        }
    }


    // Defensive tests

    /**
     * Test the decoding of a GracefulDisconnect with a timeOffline off limit
     */
    @Test
    public void testDecodeGracefulDisconnectTimeOfflineOffLimit()
    {
        Asn1Decoder decoder = new GracefulDisconnectDecoder();
        ByteBuffer bb = ByteBuffer.allocate( 0x0b );
        bb.put( new byte[]
            { 0x30, 0x04, // GracefulDisconnect ::= SEQUENCE {
                0x02,
                0x02,
                0x03,
                ( byte ) 0xE8 // timeOffline INTEGER (0..720)
                              // DEFAULT 0,
        } );
        bb.flip();

        GracefulDisconnectContainer container = new GracefulDisconnectContainer();

        try
        {
            decoder.decode( bb, container );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
            return;
        }

        fail( "We should not reach this point" );
    }


    /**
     * Test the decoding of a GracefulDisconnect with a delay off limit
     */
    @Test
    public void testDecodeGracefulDisconnectDelayOffLimit()
    {
        Asn1Decoder decoder = new GracefulDisconnectDecoder();
        ByteBuffer bb = ByteBuffer.allocate( 0x0b );
        bb.put( new byte[]
            { 0x30, 0x05, // GracefulDisconnect ::= SEQUENCE {
                ( byte ) 0x80,
                0x03,
                0x01,
                ( byte ) 0x86,
                ( byte ) 0xA0 // delay
                              // INTEGER
                              // (0..86400)
                              // DEFAULT
                              // 0
        } );
        bb.flip();

        GracefulDisconnectContainer container = new GracefulDisconnectContainer();

        try
        {
            decoder.decode( bb, container );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
            return;
        }

        fail( "We should not reach this point" );
    }


    /**
     * Test the decoding of a GracefulDisconnect with an empty TimeOffline
     */
    @Test
    public void testDecodeGracefulDisconnectTimeOfflineEmpty()
    {
        Asn1Decoder decoder = new GracefulDisconnectDecoder();
        ByteBuffer bb = ByteBuffer.allocate( 0x0b );
        bb.put( new byte[]
            { 0x30, 0x02, // GracefulDisconnect ::= SEQUENCE {
                0x02,
                0x00 // timeOffline INTEGER (0..720) DEFAULT 0,
        } );
        bb.flip();

        GracefulDisconnectContainer container = new GracefulDisconnectContainer();

        try
        {
            decoder.decode( bb, container );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
            return;
        }

        fail( "We should not reach this point" );
    }


    /**
     * Test the decoding of a GracefulDisconnect with an empty delay
     */
    @Test
    public void testDecodeGracefulDisconnectDelayEmpty()
    {
        Asn1Decoder decoder = new GracefulDisconnectDecoder();
        ByteBuffer bb = ByteBuffer.allocate( 0x0b );
        bb.put( new byte[]
            { 0x30, 0x02, // GracefulDisconnect ::= SEQUENCE {
                ( byte ) 0x80,
                0x00 // delay INTEGER (0..86400) DEFAULT 0
        } );
        bb.flip();

        GracefulDisconnectContainer container = new GracefulDisconnectContainer();

        try
        {
            decoder.decode( bb, container );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
            return;
        }

        fail( "We should not reach this point" );
    }


    /**
     * Test the decoding of a GracefulDisconnect with an empty replicated
     * contexts
     */
    @Test
    public void testDecodeGracefulDisconnectReplicatedContextsEmpty()
    {
        Asn1Decoder decoder = new GracefulDisconnectDecoder();
        ByteBuffer bb = ByteBuffer.allocate( 0x04 );
        bb.put( new byte[]
            { 0x30, 0x02, // GracefulDisconnect ::= SEQUENCE {
                0x30,
                0x00 // replicatedContexts Referral OPTIONAL
        } );
        bb.flip();

        GracefulDisconnectContainer container = new GracefulDisconnectContainer();

        try
        {
            decoder.decode( bb, container );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
            return;
        }

        fail( "We should not reach this point" );
    }


    /**
     * Test the decoding of a GracefulDisconnect with an invalid replicated
     * context
     */
    @Test
    public void testDecodeGracefulDisconnectReplicatedContextsInvalid()
    {
        Asn1Decoder decoder = new GracefulDisconnectDecoder();
        ByteBuffer bb = ByteBuffer.allocate( 0x06 );
        bb.put( new byte[]
            { 0x30, 0x04, // GracefulDisconnect ::= SEQUENCE {
                0x30,
                0x02, // replicatedContexts Referral OPTIONAL
                0x04,
                0x00 } );
        bb.flip();

        GracefulDisconnectContainer container = new GracefulDisconnectContainer();

        try
        {
            decoder.decode( bb, container );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
            return;
        }

        fail( "We should not reach this point" );
    }
}