/*
 * 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.apache.fineract.cn.anubis.security;

import static org.apache.fineract.cn.anubis.config.AnubisConstants.LOGGER_NAME;

import java.util.Set;
import org.apache.fineract.cn.anubis.annotation.AcceptedTokenType;
import org.apache.fineract.cn.anubis.api.v1.RoleConstants;
import org.apache.fineract.cn.anubis.service.PermittableService;
import org.apache.fineract.cn.lang.ApplicationName;
import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;

/**
 * @author Myrle Krantz
 */
@Component
public class GuestAuthenticator {
  private Set<ApplicationPermission> permissions;
  private final Logger logger;
  private final ApplicationName applicationName;

  @Autowired
  public GuestAuthenticator(final PermittableService permittableService,
                            final @Qualifier(LOGGER_NAME) Logger logger,
                            final ApplicationName applicationName) {
    this.permissions = permittableService.getPermittableEndpointsAsPermissions(AcceptedTokenType.GUEST);
    this.logger = logger;
    this.applicationName = applicationName;
  }

  AnubisAuthentication authenticate(final String user) {
    if (!user.equals(RoleConstants.GUEST_USER_IDENTIFIER))
      throw AmitAuthenticationException.invalidHeader();

    logger.info("Guest access \"authenticated\" successfully.", user);

    return new AnubisAuthentication(
            null,
            RoleConstants.GUEST_USER_IDENTIFIER,
            applicationName.toString(),
            applicationName.toString(),
            permissions);
  }
}