/*
 *  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.ldap.codec.compare;


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.Map;

import org.apache.directory.junit.tools.Concurrent;
import org.apache.directory.junit.tools.ConcurrentJunitRunner;
import org.apache.directory.shared.asn1.DecoderException;
import org.apache.directory.shared.asn1.EncoderException;
import org.apache.directory.shared.asn1.ber.Asn1Decoder;
import org.apache.directory.shared.asn1.ber.Asn1Container;
import org.apache.directory.shared.ldap.codec.LdapMessageContainer;
import org.apache.directory.shared.ldap.codec.ResponseCarryingException;
import org.apache.directory.shared.ldap.message.CompareRequest;
import org.apache.directory.shared.ldap.codec.message.LdapEncoder;
import org.apache.directory.shared.ldap.message.Message;
import org.apache.directory.shared.ldap.message.ResultCodeEnum;
import org.apache.directory.shared.ldap.message.control.Control;
import org.apache.directory.shared.util.Strings;
import org.junit.Test;
import org.junit.runner.RunWith;


/**
 * Test the CompareRequest codec
 * 
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 */
@RunWith(ConcurrentJunitRunner.class)
@Concurrent()
public class CompareRequestTest
{
    /** The encoder instance */
    LdapEncoder encoder = new LdapEncoder();


    /**
     * Test the decoding of a full CompareRequest
     */
    @Test
    public void testDecodeCompareRequestSuccess()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x38 );

        stream.put( new byte[]
            { 0x30,
                0x36, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01,
                0x01, // messageID MessageID
                // CHOICE { ..., compareRequest CompareRequest, ...
                0x6E,
                0x31, // CompareRequest ::= [APPLICATION 14] SEQUENCE {
                // entry LDAPDN,
                0x04, 0x20, 'c', 'n', '=', 't', 'e', 's', 't', 'M', 'o', 'd', 'i', 'f', 'y', ',', 'o', 'u', '=', 'u',
                's', 'e', 'r', 's', ',', 'o', 'u', '=', 's', 'y', 's', 't', 'e', 'm',
                // ava AttributeValueAssertion }
                0x30, 0x0D, // AttributeValueAssertion ::= SEQUENCE {
                // attributeDesc AttributeDescription,
                0x04, 0x04, 't', 'e', 's', 't',
                // assertionValue AssertionValue }
                0x04, 0x05, 'v', 'a', 'l', 'u', 'e' } );

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

        // Allocate a LdapMessage Container
        Asn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the CompareRequest PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        // Ceck the decoded CompareRequest PDU
        CompareRequest compareRequest = ( ( LdapMessageContainer ) ldapMessageContainer ).getCompareRequest();

        assertEquals( 1, compareRequest.getMessageId() );
        assertEquals( "cn=testModify,ou=users,ou=system", compareRequest.getName().toString() );
        assertEquals( "test", compareRequest.getAttributeId() );
        assertEquals( "value", compareRequest.getAssertionValue().toString() );

        // Check the encoding
        try
        {
            ByteBuffer bb = encoder.encodeMessage( compareRequest );

            // Check the length
            assertEquals( 0x38, bb.limit() );

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

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


    /**
     * Test the decoding of an empty CompareRequest
     */
    @Test
    public void testDecodeCompareRequestEmptyRequest()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x07 );

        stream.put( new byte[]
            { 0x30, 0x05, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                // CHOICE { ..., compareRequest CompareRequest, ...
                0x6E, 0x00 // CompareRequest ::= [APPLICATION 14] SEQUENCE {
            } );

        stream.flip();

        // Allocate a LdapMessage Container
        Asn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the CompareRequest PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
            fail( "We should never reach this point !!!" );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
        }
    }


    /**
     * Test the decoding of an empty entry CompareRequest
     */
    @Test
    public void testDecodeCompareRequestEmptyEntry()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x18 );

        stream.put( new byte[]
            { 0x30, 0x16, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                // CHOICE { ..., compareRequest CompareRequest, ...
                0x6E, 0x11, // CompareRequest ::= [APPLICATION 14] SEQUENCE {
                0x04, 0x00, // entry LDAPDN,
                // ava AttributeValueAssertion }
                0x30, 0x0D, // AttributeValueAssertion ::= SEQUENCE {
                // attributeDesc AttributeDescription,
                0x04, 0x04, 't', 'e', 's', 't',
                // assertionValue AssertionValue }
                0x04, 0x05, 'v', 'a', 'l', 'u', 'e' } );

        stream.flip();

        // Allocate a LdapMessage Container
        Asn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the CompareRequest PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
            fail( "We should never reach this point !!!" );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
        }
    }


    /**
     * Test the decoding of an empty ava
     */
    @Test
    public void testDecodeCompareRequestEmptyAVA()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x2B );

        stream.put( new byte[]
            { 0x30,
                0x29, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01,
                0x01, // messageID MessageID
                // CHOICE { ..., compareRequest CompareRequest, ...
                0x6E,
                0x24, // CompareRequest ::= [APPLICATION 14] SEQUENCE {
                // entry LDAPDN,
                0x04, 0x20, 'c', 'n', '=', 't', 'e', 's', 't', 'M', 'o', 'd', 'i', 'f', 'y', ',', 'o', 'u', '=', 'u',
                's', 'e', 'r', 's', ',', 'o', 'u', '=', 's', 'y', 's', 't', 'e', 'm',
                // ava AttributeValueAssertion }
                0x30, 0x00 // AttributeValueAssertion ::= SEQUENCE {
            } );

        stream.flip();

        // Allocate a LdapMessage Container
        Asn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the CompareRequest PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
            fail( "We should never reach this point !!!" );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
        }
    }


    /**
     * Test the decoding of an empty ava
     */
    @Test
    public void testDecodeCompareRequestInvalidDN()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x2B );

        stream.put( new byte[]
            { 0x30,
                0x29, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01,
                0x01, // messageID MessageID
                // CHOICE { ..., compareRequest CompareRequest, ...
                0x6E,
                0x24, // CompareRequest ::= [APPLICATION 14] SEQUENCE {
                // entry LDAPDN,
                0x04, 0x20, 'c', 'n', ':', 't', 'e', 's', 't', 'M', 'o', 'd', 'i', 'f', 'y', ',', 'o', 'u', '=', 'u',
                's', 'e', 'r', 's', ',', 'o', 'u', '=', 's', 'y', 's', 't', 'e', 'm',
                // ava AttributeValueAssertion }
                0x30, 0x00 // AttributeValueAssertion ::= SEQUENCE {
            } );

        stream.flip();

        // Allocate a LdapMessage Container
        Asn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the CompareRequest PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
            fail( "We should never reach this point !!!" );
        }
        catch ( DecoderException de )
        {
            assertTrue( de instanceof ResponseCarryingException );
            Message response = ( ( ResponseCarryingException ) de ).getResponse();
            assertTrue( response instanceof org.apache.directory.shared.ldap.codec.message.CompareResponseImpl);
            assertEquals( ResultCodeEnum.INVALID_DN_SYNTAX, ( (org.apache.directory.shared.ldap.codec.message.CompareResponseImpl) response ).getLdapResult()
                .getResultCode() );
            return;
        }
    }


    /**
     * Test the decoding of an empty attributeDesc ava
     */
    @Test
    public void testDecodeCompareRequestEmptyAttributeDesc()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x2D );

        stream.put( new byte[]
            { 0x30,
                0x2B, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01,
                0x01, // messageID MessageID
                // CHOICE { ..., compareRequest CompareRequest, ...
                0x6E,
                0x26, // CompareRequest ::= [APPLICATION 14] SEQUENCE {
                // entry LDAPDN,
                0x04, 0x20, 'c', 'n', '=', 't', 'e', 's', 't', 'M', 'o', 'd', 'i', 'f', 'y', ',', 'o', 'u', '=', 'u',
                's', 'e', 'r', 's', ',', 'o', 'u', '=', 's', 'y', 's', 't', 'e', 'm',
                // ava AttributeValueAssertion }
                0x30, 0x02, // AttributeValueAssertion ::= SEQUENCE {
                0x04, 0x00 } );

        stream.flip();

        // Allocate a LdapMessage Container
        Asn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the CompareRequest PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
            fail( "We should never reach this point !!!" );
        }
        catch ( DecoderException de )
        {
            assertTrue( de instanceof ResponseCarryingException );
            Message response = ( ( ResponseCarryingException ) de ).getResponse();
            assertTrue( response instanceof org.apache.directory.shared.ldap.codec.message.CompareResponseImpl);
            assertEquals( ResultCodeEnum.INVALID_ATTRIBUTE_SYNTAX, ( (org.apache.directory.shared.ldap.codec.message.CompareResponseImpl) response ).getLdapResult()
                .getResultCode() );
            return;
        }
    }


    /**
     * Test the decoding of an empty attributeValue ava
     */
    @Test
    public void testDecodeCompareRequestEmptyAttributeValue()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x33 );

        stream.put( new byte[]
            { 0x30,
                0x31, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01,
                0x01, // messageID MessageID
                // CHOICE { ..., compareRequest CompareRequest, ...
                0x6E,
                0x2C, // CompareRequest ::= [APPLICATION 14] SEQUENCE {
                // entry LDAPDN,
                0x04, 0x20, 'c', 'n', '=', 't', 'e', 's', 't', 'M', 'o', 'd', 'i', 'f', 'y', ',', 'o', 'u', '=', 'u',
                's', 'e', 'r', 's', ',', 'o', 'u', '=', 's', 'y', 's', 't', 'e', 'm',
                // ava AttributeValueAssertion }
                0x30, 0x08, // AttributeValueAssertion ::= SEQUENCE {
                // attributeDesc AttributeDescription,
                0x04, 0x04, 't', 'e', 's', 't',
                // assertionValue AssertionValue }
                0x04, 0x00 } );

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

        // Allocate a LdapMessage Container
        Asn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the CompareRequest PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        // Check the decoded CompareRequest PDU
        CompareRequest compareRequest = ( ( LdapMessageContainer ) ldapMessageContainer ).getCompareRequest();

        assertEquals( 1, compareRequest.getMessageId() );
        assertEquals( "cn=testModify,ou=users,ou=system", compareRequest.getName().toString() );
        assertEquals( "test", compareRequest.getAttributeId() );
        assertEquals( "", compareRequest.getAssertionValue().toString() );

        // Check the encoding
        try
        {
            ByteBuffer bb = encoder.encodeMessage( compareRequest );

            // Check the length
            assertEquals( 0x33, bb.limit() );

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

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


    /**
     * Test the decoding of an compare request with controls
     */
    @Test
    public void testDecodeCompareRequestWithControls()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x55 );

        stream.put( new byte[]
            {
                0x30,
                0x53, // LDAPMessage ::= SEQUENCE {
                0x02,
                0x01,
                0x01, // messageID MessageID
                // CHOICE { ..., compareRequest CompareRequest, ...
                0x6E,
                0x31, // CompareRequest ::= [APPLICATION 14] SEQUENCE {
                // entry LDAPDN,
                0x04, 0x20, 'c', 'n', '=', 't', 'e', 's', 't', 'M', 'o', 'd', 'i', 'f', 'y', ',', 'o', 'u', '=', 'u',
                's', 'e', 'r', 's', ',', 'o', 'u', '=', 's', 'y', 's', 't', 'e', 'm',
                // ava AttributeValueAssertion }
                0x30,
                0x0D, // AttributeValueAssertion ::= SEQUENCE {
                // attributeDesc AttributeDescription,
                0x04, 0x04, 't', 'e', 's', 't',
                // assertionValue AssertionValue }
                0x04, 0x05, 'v', 'a', 'l', 'u', 'e', ( byte ) 0xA0,
                0x1B, // A control
                0x30, 0x19, 0x04, 0x17, 0x32, 0x2E, 0x31, 0x36, 0x2E, 0x38, 0x34, 0x30, 0x2E, 0x31, 0x2E, 0x31, 0x31,
                0x33, 0x37, 0x33, 0x30, 0x2E, 0x33, 0x2E, 0x34, 0x2E, 0x32 } );

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

        // Allocate a LdapMessage Container
        Asn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the CompareRequest PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        // Ceck the decoded CompareRequest PDU
        CompareRequest compareRequest = ( ( LdapMessageContainer ) ldapMessageContainer ).getCompareRequest();

        assertEquals( 1, compareRequest.getMessageId() );
        assertEquals( "cn=testModify,ou=users,ou=system", compareRequest.getName().toString() );
        assertEquals( "test", compareRequest.getAttributeId() );
        assertEquals( "value", compareRequest.getAssertionValue().toString() );

        // Check the Control
        Map<String, Control> controls = compareRequest.getControls();

        assertEquals( 1, controls.size() );

        Control control = controls.get( "2.16.840.1.113730.3.4.2" );
        assertEquals( "2.16.840.1.113730.3.4.2", control.getOid() );
        assertEquals( "", Strings.dumpBytes((byte[]) control.getValue()) );

        // Check the encoding
        try
        {
            ByteBuffer bb = encoder.encodeMessage( compareRequest );

            // Check the length
            assertEquals( 0x55, bb.limit() );

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

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