/*
    * Copyright 2019 the original author or 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 org.bremersee.ldaptive;
  
  import java.util.Optional;
  import org.ldaptive.LdapException;
  import org.ldaptive.ResultCode;
  
  /**
   * The default ldaptive error handler.
   *
   * @author Christian Bremer
   */
  public class DefaultLdaptiveErrorHandler extends AbstractLdaptiveErrorHandler {
  
    @Override
    public LdaptiveException map(LdapException ldapException) {
      return LdaptiveException.builder()
          .reason(Optional.ofNullable(ldapException)
              .map(LdapException::getMessage)
              .orElse("Unknown"))
          .errorCode(errorCode(ldapException))
          .httpStatus(httpStatus(ldapException))
          .cause(ldapException)
          .build();
    }
  
    private int httpStatus(LdapException ldapException) {
      return Optional.ofNullable(ldapException)
          .map(LdapException::getResultCode)
          .map(this::httpStatus)
          .orElse(500);
    }
  
    private int httpStatus(ResultCode resultCode) {
      ResultCode code = Optional.ofNullable(resultCode).orElse(ResultCode.OTHER);
      return switch (code) {
        case SUCCESS -> 200;
        case INVALID_CREDENTIALS -> 400;
        case NO_SUCH_OBJECT -> 404;
        default -> 500;
      };
    }
  
    private String errorCode(LdapException ldapException) {
      return Optional.ofNullable(ldapException)
          .map(LdapException::getResultCode)
          .map(ResultCode::name)
          .orElse(null);
    }
  
  }