content: /* 
   * LibertyBans-api
   * Copyright © 2020 Anand Beh <https://www.arim.space>
   * 
   * LibertyBans-api is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Affero General Public License as
   * published by the Free Software Foundation, either version 3 of the
   * License, or (at your option) any later version.
   * 
   * LibertyBans-api is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
   * GNU Affero General Public License for more details.
   * 
   * You should have received a copy of the GNU Affero General Public License
   * along with LibertyBans-api. If not, see <https://www.gnu.org/licenses/>
   * and navigate to version 3 of the GNU Affero General Public License.
   */
  package space.arim.libertybans.api.user;
  
  import java.util.Optional;
  import java.util.UUID;
  
  import space.arim.omnibus.util.concurrent.CentralisedFuture;
  
  /**
   * Provides the capability to resolve UUIDs and names.
   * 
   * @author A248
   *
   */
  public interface UserResolver {
  
  	/**
  	 * Performs a full lookup of a UUID from a player name. May contact
  	 * external APIs such as the Mojang API.
  	 * 
  	 * @param name the player name
  	 * @return a future yielding the UUID or an empty optional if not found
  	 */
  	CentralisedFuture<Optional<UUID>> lookupUUID(String name);
  
  	/**
  	 * Performs a full lookup of a player name from a UUID. May contact
  	 * external APIs such as the Mojang API.
  	 * 
  	 * @param uuid the uuid
  	 * @return a future yielding the player name or an empty optional if not found
  	 */
  	CentralisedFuture<Optional<String>> lookupName(UUID uuid);
  
  }
  