/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.apache.maven.surefire.common.junit48;
  
  import java.util.Collection;
  
  import org.junit.runner.Description;
  import org.junit.runner.manipulation.Filter;
  
  final class CombinedCategoryFilter extends Filter {
      private final Collection<Filter> includedFilters;
  
      private final Collection<Filter> excludedFilters;
  
      CombinedCategoryFilter(Collection<Filter> includedFilters, Collection<Filter> excludedFilters) {
          this.includedFilters = includedFilters;
          this.excludedFilters = excludedFilters;
      }
  
      @Override
      public boolean shouldRun(Description description) {
          return (includedFilters.isEmpty() || anyFilterMatchesDescription(includedFilters, description))
                  && (excludedFilters.isEmpty() || allFiltersMatchDescription(excludedFilters, description));
      }
  
      private boolean anyFilterMatchesDescription(Collection<Filter> filters, Description description) {
          for (Filter f : filters) {
              if (f.shouldRun(description)) {
                  return true;
              }
          }
          return false;
      }
  
      private boolean allFiltersMatchDescription(Collection<Filter> filters, Description description) {
          for (Filter f : filters) {
              if (!f.shouldRun(description)) {
                  return false;
              }
          }
          return true;
      }
  
      @Override
      public String describe() {
          StringBuilder sb = new StringBuilder();
          if (!includedFilters.isEmpty()) {
              sb.append("(");
              sb.append(joinFilters(includedFilters, " OR "));
              sb.append(")");
              if (!excludedFilters.isEmpty()) {
                  sb.append(" AND ");
              }
          }
  
          if (!excludedFilters.isEmpty()) {
              sb.append("NOT (");
              sb.append(joinFilters(includedFilters, " OR "));
              sb.append(")");
          }
  
          return sb.toString();
      }
  
      private String joinFilters(Collection<Filter> filters, String sep) {
          boolean isFirst = true;
          StringBuilder sb = new StringBuilder();
          for (Filter f : filters) {
              if (!isFirst) {
                  sb.append(sep);
              }
              sb.append(f.describe());
              isFirst = false;
          }
          return sb.toString();
      }
  }