/*
 * JBoss, Home of Professional Open Source
 * Copyright 2015 Red Hat Inc. and/or its affiliates and other contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jboss.arquillian.container.test.impl.enricher.resource;

import java.util.Collection;

import org.jboss.arquillian.core.api.annotation.Observes;
import org.jboss.arquillian.core.spi.ServiceLoader;
import org.jboss.arquillian.test.spi.enricher.resource.ResourceProvider;

public class RemoteResourceCommandObserver {

   public void lookup(@Observes RemoteResourceCommand command, ServiceLoader serviceLoader) {
      Collection<ResourceProvider> resourceProviders = serviceLoader.all(ResourceProvider.class);
      Class<?> type = command.getType();
      for(ResourceProvider resourceProvider: resourceProviders) {
         if(resourceProvider.canProvide(type)) {
            Object value = resourceProvider.lookup(command.getResource(), command.getAnnotations());
            if(value == null) {
               throw new RuntimeException("Provider for type " + type + " returned a null value: " + resourceProvider);
            }
            command.setResult(value);
            return;
         }
      }
      throw new IllegalArgumentException("No ResourceProvider found for type: " + type);
   }
}
