/**
    * This file Copyright (c) 2017-2018 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.config.source.yaml.dependency;
  
  import info.magnolia.config.converters.RawDefinitionViewToMapConverter;
  import info.magnolia.config.registry.DefinitionProvider;
  import info.magnolia.config.registry.DefinitionProvider.Problem;
  import info.magnolia.config.registry.Registry;
  
  import java.util.Map;
  import java.util.function.Consumer;
  
  /**
   * A kind of {@link YamlConfigurationDependency} which represents a definition referenced within some YAML configuration file.
   */
  public class DefinitionDependency extends AbstractYamlConfigurationDependency {
  
      public static Builder resolve() {
          return new Builder();
      }
  
      private final Registry<?> registry;
  
      private final String referenceId;
  
      private DefinitionDependency(Registry<?> registry, String definitionReference, Consumer<Problem> problemCollector) {
          super(problemCollector);
          this.registry = registry;
          this.referenceId = definitionReference;
      }
  
      @Override
      public boolean exists() {
          try {
              resolveDefinitionProvider();
              return true;
          } catch (Registry.NoSuchDefinitionException ignore) {
              return false;
          }
      }
  
      @Override
      public long getLastModified() {
          return getLastModified(() -> resolveDefinitionProvider().getLastModified());
      }
  
      public DefinitionProvider<?> resolveDefinitionProvider() {
          return registry.getProvider(referenceId);
      }
  
      @Override
      public Map<String, Object> readData() {
          return RawDefinitionViewToMapConverter.rawViewToMap(resolveDefinitionProvider().getRaw());
      }
  
      public String getReferenceId() {
          return referenceId;
      }
  
      @Override
      public String toString() {
          return String.format("[%s] definition dependency with referenceId [%s]", this.registry.type().getName(), referenceId);
      }
  
      /**
       * Builder for {@link DefinitionDependency} class instances.
       */
      public static class Builder {
 
         private String definitionReference;
         private Consumer<Problem> problemCollector;
         private Registry<?> registry;
 
         public Builder withDefinitionReference(String definitionReference) {
             this.definitionReference = definitionReference;
             return this;
         }
 
         public Builder withProblemCollector(Consumer<Problem> problemCollector) {
             this.problemCollector = problemCollector;
             return this;
         }
         public Builder withRegistry(Registry<?> registry) {
             this.registry = registry;
             return this;
         }
 
         public DefinitionDependency build() {
             return new DefinitionDependency(registry, definitionReference, problemCollector);
         }
     }
 }