content: /*
   * LibertyBans
   * Copyright © 2022 Anand Beh
   *
   * LibertyBans 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 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. If not, see <https://www.gnu.org/licenses/>
   * and navigate to version 3 of the GNU Affero General Public License.
   */
  
  package space.arim.libertybans.core.addon;
  
  import space.arim.libertybans.core.commands.SubCommandGroup;
  
  /**
   * The starting point for an addon. Implementations of this interface are discovered using the
   * service loader.
   *
   */
  public interface AddonProvider {
  
  	/**
  	 * Additional bind modules to add to the injector.
  	 * <p>
  	 * <b>Commands</b> may be provided by binding implementations of {@link SubCommandGroup} using
  	 * multi-binding.
  	 * <p>
  	 * Addons which need to perform startup/shutdown operations should register an implementation
  	 * of {@link Addon}.
  	 *
  	 * @return bind modules to add
  	 */
  	AddonBindModule[] bindModules();
  
  	/**
  	 * Determines whether this addon can load. For example, may return {@code UNSATISFIED_DEPENDENCIES}
  	 * if required dependencies are not present.
  	 *
  	 * @return whether this addon can load
  	 */
  	default Availability availability() {
  		return Availability.YES;
  	}
  
  	enum Availability {
  		YES,
  		UNSATISFIED_DEPENDENCIES,
  		UNSATISFIED_PLATFORM
  	}
  
  }
  