// Copyright 2017 The Nomulus Authors. All Rights Reserved.
//
// 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 google.registry.util;

import com.google.common.base.Ascii;
import com.google.common.base.CharMatcher;

/** Utilities for working with {@code Registrar} objects. */
public class RegistrarUtils {

  private static final CharMatcher ASCII_LETTER_OR_DIGIT_MATCHER =
      JavaCharMatchers.asciiLetterOrDigitMatcher();

  /** Strip out anything that isn't a letter or digit, and lowercase. */
  public static String normalizeRegistrarName(String name) {
    return Ascii.toLowerCase(ASCII_LETTER_OR_DIGIT_MATCHER.retainFrom(name));
  }

  /**
   * Returns a normalized registrar ID by taking the input and making it lowercase and removing all
   * characters that aren't alphanumeric or hyphens. The normalized id should be unique in the
   * database, and is suitable for use in email addresses.
   */
  public static String normalizeRegistrarId(String registrarId) {
    return Ascii.toLowerCase(registrarId).replaceAll("[^a-z0-9\\-]", "");
  }
}
