/*
 * Copyright 2021 Apollo Authors
 *
 * 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 com.ctrip.framework.apollo.portal.spi.oidc;

import java.util.Base64;
import java.util.concurrent.ThreadLocalRandom;
import org.springframework.security.crypto.password.PasswordEncoder;

/**
 * @author vdisk <vdisk@foxmail.com>
 */
public class PlaceholderPasswordEncoder implements PasswordEncoder {

  public static final String ENCODING_ID = "placeholder";

  /**
   * generate a random string as a password placeholder.
   */
  @Override
  public String encode(CharSequence rawPassword) {
    byte[] bytes = new byte[32];
    ThreadLocalRandom.current().nextBytes(bytes);
    return Base64.getEncoder().encodeToString(bytes);
  }

  /**
   * placeholder will never matches a password
   */
  @Override
  public boolean matches(CharSequence rawPassword, String encodedPassword) {
    return false;
  }
}
