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/*
 * Copyright Amherst College
 *
 * 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 edu.amherst.acdc.mint;

import static org.apache.commons.lang3.RandomStringUtils.random;

import org.fcrepo.kernel.api.services.functions.HierarchicalIdentifierSupplier;

/**
 * @author acoburn
 */
public class IdGenerator implements HierarchicalIdentifierSupplier {

    private final int length;

    /**
     * Create a 20-character id generator
     */
    public IdGenerator() {
        this(20);
    }

    /**
     * Create an id generator with a configurable length
     * @param length the length
     */
    public IdGenerator(final int length) {
        this.length = length;
    }

    @Override
    public String get() {
        return random(length, "abcdefghijklmnopqrstuvwxyz");
    }
}