package org.apache.maven.surefire.common.junit48;
   
   /*
    * 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.
   */
  
  import org.apache.maven.surefire.common.junit4.JUnit4ProviderUtil;
  import org.apache.maven.surefire.group.match.GroupMatcher;
  import org.apache.maven.surefire.group.parse.GroupMatcherParser;
  import org.apache.maven.surefire.group.parse.ParseException;
  import org.apache.maven.surefire.testset.TestListResolver;
  import org.junit.runner.Description;
  import org.junit.runner.manipulation.Filter;
  
  import java.util.Map;
  
  import static org.apache.maven.surefire.booter.ProviderParameterNames.TESTNG_EXCLUDEDGROUPS_PROP;
  import static org.apache.maven.surefire.booter.ProviderParameterNames.TESTNG_GROUPS_PROP;
  import static org.apache.maven.surefire.util.internal.StringUtils.isNotBlank;
  
  /**
   * @author Todd Lipcon
   */
  public class FilterFactory
  {
      private final ClassLoader testClassLoader;
  
      public FilterFactory( ClassLoader testClassLoader )
      {
          this.testClassLoader = testClassLoader;
      }
  
      /**
       * @return {@code true} if non-blank
       * {@link org.apache.maven.surefire.booter.ProviderParameterNames#TESTNG_GROUPS_PROP} and/or
       * {@link org.apache.maven.surefire.booter.ProviderParameterNames#TESTNG_EXCLUDEDGROUPS_PROP} exists.
       */
      public boolean canCreateGroupFilter( Map<String, String> providerProperties )
      {
          String groups = providerProperties.get( TESTNG_GROUPS_PROP );
          String excludedGroups = providerProperties.get( TESTNG_EXCLUDEDGROUPS_PROP );
          return isNotBlank( groups ) || isNotBlank( excludedGroups );
      }
  
      /**
       * Creates filter using he key
       * {@link org.apache.maven.surefire.booter.ProviderParameterNames#TESTNG_GROUPS_PROP} and/or
       * {@link org.apache.maven.surefire.booter.ProviderParameterNames#TESTNG_EXCLUDEDGROUPS_PROP}.
       */
      public Filter createGroupFilter( Map<String, String> providerProperties )
      {
          String groups = providerProperties.get( TESTNG_GROUPS_PROP );
  
          GroupMatcher included = null;
          if ( isNotBlank( groups ) )
          {
              try
              {
                  included = new GroupMatcherParser( groups ).parse();
              }
              catch ( ParseException e )
              {
                  throw new IllegalArgumentException(
                      "Invalid group expression: '" + groups + "'. Reason: " + e.getMessage(), e );
              }
          }
  
          String excludedGroups = providerProperties.get( TESTNG_EXCLUDEDGROUPS_PROP );
  
          GroupMatcher excluded = null;
          if ( isNotBlank( excludedGroups ) )
          {
              try
              {
                  excluded = new GroupMatcherParser( excludedGroups ).parse();
              }
              catch ( ParseException e )
              {
                  throw new IllegalArgumentException(
                      "Invalid group expression: '" + excludedGroups + "'. Reason: " + e.getMessage(), e );
              }
          }
  
          if ( included != null && testClassLoader != null )
         {
             included.loadGroupClasses( testClassLoader );
         }
 
         if ( excluded != null && testClassLoader != null )
         {
             excluded.loadGroupClasses( testClassLoader );
         }
 
         return new GroupMatcherCategoryFilter( included, excluded );
     }
 
     public Filter createMethodFilter( String requestedTestMethod )
     {
         return new MethodFilter( requestedTestMethod );
     }
 
     public Filter createMethodFilter( TestListResolver resolver )
     {
         return new MethodFilter( resolver );
     }
 
     public Filter createMatchAnyDescriptionFilter( Iterable<Description> descriptions )
     {
         return JUnit4ProviderUtil.createMatchAnyDescriptionFilter( descriptions );
     }
 
     public Filter and( Filter filter1, Filter filter2 )
     {
         return new AndFilter( filter1, filter2 );
     }
 }