content: /*
   * LibertyBans
   * Copyright © 2021 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.it;
  
  import jakarta.inject.Provider;
  import org.junit.jupiter.api.extension.ExtensionContext;
  import org.junit.jupiter.api.extension.ParameterContext;
  import org.junit.jupiter.api.extension.ParameterResolutionException;
  import org.junit.jupiter.api.extension.ParameterResolver;
  import space.arim.injector.Injector;
  import space.arim.injector.error.InjectorException;
  
  import java.lang.reflect.ParameterizedType;
  import java.lang.reflect.Type;
  
  class InjectorParameterResolver implements ParameterResolver {
  
  	private final Injector injector;
  
  	InjectorParameterResolver(Injector injector) {
  		this.injector = injector;
  	}
  
  	/*
  	 * ParameterResolver
  	 */
  
  	@Override
  	public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext)
  			throws ParameterResolutionException {
  		return !parameterContext.isAnnotated(DontInject.class);
  	}
  
  	@Override
  	public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext)
  			throws ParameterResolutionException {
  		Class<?> parameterType = parameterContext.getParameter().getType();
  		try {
  			if (parameterType.equals(Provider.class)) {
  				Type type = parameterContext.getParameter().getParameterizedType();
  				ParameterizedType parameterizedType = (ParameterizedType) type;
  				Class<?> typeArgument = (Class<?>) parameterizedType.getActualTypeArguments()[0];
  				return (Provider<Object>) () -> injector.request(typeArgument);
  			}
  			return injector.request(parameterType);
  		} catch (InjectorException ex) {
  			throw new ParameterResolutionException("Unable to inject parameter", ex);
  		}
  	}
  
  }
  