/*
 * The contents of this file are subject to the terms of the Common Development and
 * Distribution License (the License). You may not use this file except in compliance with the
 * License.
 *
 * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
 * specific language governing permission and limitations under the License.
 *
 * When distributing Covered Software, include this CDDL Header Notice in each file and include
 * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
 * Header, with the fields enclosed by brackets [] replaced by your own identifying
 * information: "Portions Copyright [year] [name of copyright owner]".
 *
 * Copyright 2014-2016 ForgeRock AS.
 */
package org.opends.server.core;

import java.lang.reflect.Constructor;

import static org.opends.messages.CoreMessages.ERR_CANNOT_INSTANTIATE_CONFIG_HANDLER;

import org.forgerock.i18n.LocalizableMessage;
import org.forgerock.i18n.slf4j.LocalizedLogger;
import org.forgerock.opendj.config.ConfigurationFramework;
import org.forgerock.opendj.config.server.ConfigException;
import org.opends.server.types.InitializationException;

/**
 * Bootstrap the server configuration.
 */
public class ConfigurationBootstrapper
{

  private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();

  /**
   * Bootstrap the server configuration.
   * <p>
   * The returned server management context is fully initialized with
   * all configuration objects valued from configuration file.
   *
   * @param serverContext
   *            The server context.
   * @param configClass
   *            The actual configuration class to use.
   * @return the configuration handler
   * @throws InitializationException
   *            If an error occurs during bootstrapping.
   */
  public static ConfigurationHandler bootstrap(ServerContext serverContext, Class<ConfigurationHandler> configClass)
      throws InitializationException {
    final ConfigurationFramework configFramework = ConfigurationFramework.getInstance();
    try
    {
      if (!configFramework.isInitialized())
      {
        configFramework.initialize();
      }
    }
    catch (ConfigException e)
    {
      // TODO : fix the message
      throw new InitializationException(LocalizableMessage.raw("Cannot initialize configuration framework"), e);
    }

    // Load and instantiate the configuration handler class.
    Class<ConfigurationHandler> handlerClass = configClass;
    final ConfigurationHandler configurationHandler;
    try
    {
      Constructor<ConfigurationHandler> cons = handlerClass.getConstructor(ServerContext.class);
      configurationHandler = cons.newInstance(serverContext);
    }
    catch (Exception e)
    {
      logger.traceException(e);
      LocalizableMessage message = ERR_CANNOT_INSTANTIATE_CONFIG_HANDLER.get(configClass, e.getLocalizedMessage());
      throw new InitializationException(message, e);
    }
    configurationHandler.initialize();
    return configurationHandler;
  }
}