/**
 * ============LICENSE_START===================================================
 * SPARKY (AAI UI service)
 * ============================================================================
 * Copyright © 2017 AT&T Intellectual Property.
 * Copyright © 2017 Amdocs
 * 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.
 * ============LICENSE_END=====================================================
 *
 * ECOMP and OpenECOMP are trademarks
 * and service marks of AT&T Intellectual Property.
 */

package org.openecomp.sparky.security.portal.config;

import java.util.Properties;

import org.openecomp.sparky.util.ConfigHelper;
import org.openecomp.sparky.util.Encryptor;
import org.openecomp.sparky.viewandinspect.config.TierSupportUiConstants;

/**
 * Provides Portal authentication configuration.
 */
public class PortalAuthenticationConfig {

  private String username;
  private String password;
  private boolean isOnapEnabled;

  public static final String PROP_USERNAME = "username";
  public static final String PROP_PASSWORD = "password"; // NOSONAR
  public static final String PROP_IS_ONAP_ENABLED = "onap_enabled"; // NOSONAR
  private static final String AUTHENTICATION_CONFIG_FILE = TierSupportUiConstants.PORTAL_AUTHENTICATION_FILE_LOCATION;

  private PortalAuthenticationConfig() {
    // Prevent instantiation
  }

  private static class PortalAuthenticationConfigHelper {
    private static final PortalAuthenticationConfig INSTANCE = new PortalAuthenticationConfig();

    private PortalAuthenticationConfigHelper() {
      // Deliberately empty
    }
  }

  /**
   * Get a singleton instance of the configuration.
   *
   * @return
   */
  public static PortalAuthenticationConfig getInstance() {
    PortalAuthenticationConfigHelper.INSTANCE.load();
    return PortalAuthenticationConfigHelper.INSTANCE;
  }

  public String getUsername() {
    return username;
  }

  public String getPassword() {
    Encryptor encryptor = new Encryptor();
    return encryptor.decryptValue(password);
  }
  
  public boolean getIsOnapEnabled() {
    return isOnapEnabled;
  }

  /**
   * Reload the Portal authentication properties from the classpath.
   */
  public void reload() {
    load();
  }

  /**
   * Load the Portal authentication properties from the classpath.
   */
  private void load() {
    Properties props = ConfigHelper.loadConfigFromExplicitPath(AUTHENTICATION_CONFIG_FILE);
    username = props.getProperty(PROP_USERNAME);
    password = props.getProperty(PROP_PASSWORD);
    isOnapEnabled = Boolean.parseBoolean(props.getProperty(PROP_IS_ONAP_ENABLED, "true"));
  }
}