/**
 * 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.jooby.assets;

import static java.util.Objects.requireNonNull;

import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.net.URLClassLoader;

class AssetClassLoader {

  public static ClassLoader classLoader(final ClassLoader parent) throws IOException {
    requireNonNull(parent, "ClassLoader required.");
    File publicDir = new File("public");
    if (publicDir.exists()) {
      return new URLClassLoader(new URL[]{publicDir.toURI().toURL() }, parent);
    }
    return parent;
  }
}