content: /*
   * LibertyBans
   * Copyright © 2023 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.exempt;
  
  import jakarta.inject.Inject;
  import space.arim.injector.MultiBinding;
  import space.arim.libertybans.api.Victim;
  import space.arim.libertybans.core.env.CmdSender;
  import space.arim.omnibus.util.concurrent.FactoryOfTheFuture;
  
  import java.util.Set;
  import java.util.concurrent.CompletionStage;
  
  public final class Exemption {
  
  	private final FactoryOfTheFuture futuresFactory;
  	private final Set<ExemptProvider> providers;
  
  	@Inject
  	public Exemption(FactoryOfTheFuture futuresFactory, @MultiBinding Set<ExemptProvider> providers) {
  		this.futuresFactory = futuresFactory;
  		this.providers = providers;
  	}
  
  	public CompletionStage<Boolean> isVictimExempt(CmdSender sender, String category, Victim target) {
  		CompletionStage<Boolean> isExemptFuture = null;
  		for (ExemptProvider provider : providers) {
  			var thisFuture = provider.isExempted(sender, category, target);
  			if (isExemptFuture == null) {
  				isExemptFuture = thisFuture;
  			} else {
  				isExemptFuture = isExemptFuture.thenCombine(thisFuture, (isExempt1, isExempt2) -> isExempt1 || isExempt2);
  			}
  		}
  		return (isExemptFuture == null) ? futuresFactory.completedFuture(false) : isExemptFuture;
  	}
  
  }
  