package com.atlassian.activeobjects.internal;
   
   import com.atlassian.activeobjects.config.ActiveObjectsConfiguration;
   import com.atlassian.activeobjects.external.ActiveObjects;
   import com.atlassian.tenancy.api.Tenant;
   import com.google.common.collect.ImmutableSet;
   
   import java.util.Collection;
   
  /**
   * A delegating factory that will check multiple factories to achieve its goal.
   */
  public final class DelegatingActiveObjectsFactory implements ActiveObjectsFactory {
      private final ImmutableSet<ActiveObjectsFactory> factories;
  
      public DelegatingActiveObjectsFactory(Collection<ActiveObjectsFactory> factories) {
          this.factories = ImmutableSet.<ActiveObjectsFactory>builder().addAll(factories).build();
      }
  
      public boolean accept(ActiveObjectsConfiguration configuration) {
          for (ActiveObjectsFactory factory : factories) {
              if (factory.accept(configuration)) {
                  return true;
              }
          }
          return false;
      }
  
      public ActiveObjects create(ActiveObjectsConfiguration configuration, Tenant tenant) {
          for (ActiveObjectsFactory factory : factories) {
              if (factory.accept(configuration)) {
                  return factory.create(configuration, tenant);
              }
          }
          throw new IllegalStateException("Could not find a factory for this configuration, " + configuration + ", " +
                  "did you call #accept(ActiveObjectsConfiguration) before calling me?");
      }
  }