/*
 * The contents of this file are subject to the terms of the Common Development and
 * Distribution License (the License). You may not use this file except in compliance with the
 * License.
 *
 * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
 * specific language governing permission and limitations under the License.
 *
 * When distributing Covered Software, include this CDDL Header Notice in each file and include
 * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
 * Header, with the fields enclosed by brackets [] replaced by your own identifying
 * information: "Portions Copyright [year] [name of copyright owner]".
 *
 * Copyright 2014-2016 ForgeRock AS.
 */
package com.forgerock.opendj.ldap.tools;

import static com.forgerock.opendj.cli.CliMessages.*;
import static com.forgerock.opendj.ldap.tools.ToolsMessages.INFO_COMPARE_OPERATION_RESULT_FALSE;
import static com.forgerock.opendj.ldap.tools.ToolsMessages.INFO_COMPARE_OPERATION_RESULT_TRUE;
import static com.forgerock.opendj.ldap.tools.ToolsMessages.INFO_LDAPCOMPARE_TOOL_DESCRIPTION;

import java.io.PrintStream;
import java.util.Random;

import org.forgerock.i18n.LocalizableMessage;
import org.forgerock.opendj.ldap.ByteStringBuilder;
import org.forgerock.opendj.ldap.TestCaseUtils;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

@SuppressWarnings("javadoc")
public class LDAPCompareITCase extends ToolsITCase {

    private static final int NB_RAND_SIMPLE_COMPARE = 10;
    private static final int NB_OTHER_SIMPLE_SEARCH = 2;

    @DataProvider
    public Object[][] ldapCompareArgs() throws Exception {
        Object[][] data = new Object[NB_RAND_SIMPLE_COMPARE + NB_OTHER_SIMPLE_SEARCH][];
        Random rand = new Random();
        long[] randUIDs = new long[NB_RAND_SIMPLE_COMPARE];

        // Check if the help message is correctly prompted
        data[0] = new Object[] { args("--help"), INFO_LDAPCOMPARE_TOOL_DESCRIPTION.get(), "" };

        // Check if the help reference message is prompted if arguments failed to be parsed
        data[1] = new Object[] {
            args("-42"), "", INFO_GLOBAL_HELP_REFERENCE.get("java " + LDAPCompare.class.getCanonicalName()) };

        // Perform some basic comparison on random user from the test server
        for (int i = 0; i < NB_RAND_SIMPLE_COMPARE; i++) {
            randUIDs[i] = Math.round(rand.nextInt(1000));
        }

        for (int i = 0; i < NB_RAND_SIMPLE_COMPARE; i++) {
            long firstUID = randUIDs[i];
            // For first test, ensure that both uids are equals
            long secondUID = i == 0 ? firstUID : randUIDs[rand.nextInt(randUIDs.length)];

            data[i + NB_OTHER_SIMPLE_SEARCH] = produceLDAPCompareBasicTest(firstUID, secondUID);
        }

        return data;
    }

    private Object[] produceLDAPCompareBasicTest(long firstUID, long secondUID) {
        String uid = String.format("uid:user.%d", firstUID);
        String dn = String.format("uid=user.%d,ou=people,o=test", secondUID);
        LocalizableMessage messageToCheck = INFO_COMPARE_OPERATION_RESULT_FALSE.get(dn);

        if (firstUID == secondUID) {
            messageToCheck = INFO_COMPARE_OPERATION_RESULT_TRUE.get(dn);
        }

        return new Object[] {
            args("-h", TestCaseUtils.getServerSocketAddress().getHostName(), "-p",
                Integer.toString(TestCaseUtils.getServerSocketAddress().getPort()), uid, dn), messageToCheck, "" };
    }

    @Test(dataProvider = "ldapCompareArgs")
    public void testITLDAPSearch(String[] arguments, Object expectedOut, Object expectedErr) throws Exception {
        ByteStringBuilder out = new ByteStringBuilder();
        ByteStringBuilder err = new ByteStringBuilder();

        try (PrintStream outStream = new PrintStream(out.asOutputStream());
             PrintStream errStream = new PrintStream(err.asOutputStream())) {
            LDAPCompare ldapCompare = new LDAPCompare(outStream, errStream);

            ldapCompare.run(arguments);
            checkOuputStreams(out, err, expectedOut, expectedErr);
        } catch (final LDAPToolException ae) {
            checkOuputStreams(out, err, expectedOut, expectedErr);
        }
    }
}