/*
    * 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.basepom.mojo.duplicatefinder.classpath;
  
  import java.io.File;
  import java.util.function.Predicate;
  import java.util.stream.Collectors;
  
  import com.google.common.collect.ImmutableSet;
  import com.google.common.collect.Multimap;
  
  final class ClasspathCacheElement {
  
      private final File element;
      private final ImmutableSet<String> classes;
      private final ImmutableSet<String> resources;
  
      public static Builder builder(final File element) {
          return new Builder(element);
      }
  
      private ClasspathCacheElement(final File element, final ImmutableSet<String> classes, final ImmutableSet<String> resources) {
          this.element = element;
          this.classes = classes;
          this.resources = resources;
      }
  
      void putClasses(final Multimap<String, File> classMap, final Predicate<String> excludePredicate) {
          for (final String className : classes.stream().filter(excludePredicate.negate()).collect(Collectors.toList())) {
              classMap.put(className, element);
          }
      }
  
      void putResources(final Multimap<String, File> resourceMap, final Predicate<String> excludePredicate) {
          for (final String resource : resources.stream().filter(excludePredicate.negate()).collect(Collectors.toList())) {
              resourceMap.put(resource, element);
          }
      }
  
      static final class Builder {
  
          private final File element;
          private final ImmutableSet.Builder<String> classBuilder = ImmutableSet.builder();
          private final ImmutableSet.Builder<String> resourcesBuilder = ImmutableSet.builder();
  
          private Builder(final File element) {
              this.element = element;
          }
  
          void addClass(final String className) {
              classBuilder.add(className);
          }
  
          void addResource(final String resource) {
              resourcesBuilder.add(resource);
          }
  
          ClasspathCacheElement build() {
              return new ClasspathCacheElement(element, classBuilder.build(), resourcesBuilder.build());
          }
      }
  }