<%#
 Copyright 2013-2018 the original author or authors from the JHipster project.

 This file is part of the JHipster project, see https://www.jhipster.tech/
 for more information.

 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 <%=packageName%>.service.util;

import org.apache.commons.lang3.RandomStringUtils;

/**
 * Utility class for generating random Strings.
 */
public final class RandomUtil {

    private static final int DEF_COUNT = 20;

    private RandomUtil() {
    }

    /**
     * Generate a password.
     *
     * @return the generated password
     */
    public static String generatePassword() {
        return RandomStringUtils.randomAlphanumeric(DEF_COUNT);
    }

    /**
     * Generate an activation key.
     *
     * @return the generated activation key
     */
    public static String generateActivationKey() {
        return RandomStringUtils.randomNumeric(DEF_COUNT);
    }

    /**
     * Generate a reset key.
     *
     * @return the generated reset key
     */
    public static String generateResetKey() {
        return RandomStringUtils.randomNumeric(DEF_COUNT);
    }
    <%_ if (authenticationType === 'session') { _%>

    /**
     * Generate a unique series to validate a persistent token, used in the
     * authentication remember-me mechanism.
     *
     * @return the generated series data
     */
    public static String generateSeriesData() {
        return RandomStringUtils.randomAlphanumeric(DEF_COUNT);
    }

    /**
     * Generate a persistent token, used in the authentication remember-me mechanism.
     *
     * @return the generated token data
     */
    public static String generateTokenData() {
        return RandomStringUtils.randomAlphanumeric(DEF_COUNT);
    }
    <%_ } _%>
}