/*
    * 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.testng.utils;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.maven.surefire.group.match.AndGroupMatcher;
  import org.apache.maven.surefire.group.match.GroupMatcher;
  import org.apache.maven.surefire.group.match.InverseGroupMatcher;
  import org.apache.maven.surefire.group.parse.GroupMatcherParser;
  import org.apache.maven.surefire.group.parse.ParseException;
  import org.testng.IMethodSelector;
  import org.testng.IMethodSelectorContext;
  import org.testng.ITestNGMethod;
  
  /**
   * Method selector delegating to {@link GroupMatcher} to decide if a method is included or not.
   */
  public class GroupMatcherMethodSelector implements IMethodSelector {
  
      private static final long serialVersionUID = 1L;
  
      private static GroupMatcher matcher;
  
      private Map<ITestNGMethod, Boolean> answers = new HashMap<>();
  
      @Override
      public boolean includeMethod(IMethodSelectorContext context, ITestNGMethod method, boolean isTestMethod) {
          Boolean result = answers.get(method);
          if (result != null) {
              return result;
          }
  
          if (matcher == null) {
              return true;
          }
  
          String[] groups = method.getGroups();
          result = matcher.enabled(groups);
          answers.put(method, result);
          return result;
      }
  
      @Override
      public void setTestMethods(List<ITestNGMethod> testMethods) {}
  
      public static void setGroups(String groups, String excludedGroups) {
          // System.out.println( "Processing group includes: '" + groups + "'\nExcludes: '" + excludedGroups + "'" );
  
          try {
              AndGroupMatcher matcher = new AndGroupMatcher();
              GroupMatcher in = null;
              if (groups != null && !groups.trim().isEmpty()) {
                  in = new GroupMatcherParser(groups).parse();
              }
  
              if (in != null) {
                  matcher.addMatcher(in);
              }
  
              GroupMatcher ex = null;
              if (excludedGroups != null && !excludedGroups.trim().isEmpty()) {
                  ex = new GroupMatcherParser(excludedGroups).parse();
              }
  
              if (ex != null) {
                  matcher.addMatcher(new InverseGroupMatcher(ex));
              }
  
              if (in != null || ex != null) {
                  // System.out.println( "Group matcher: " + matcher );
                  GroupMatcherMethodSelector.matcher = matcher;
              }
          } catch (ParseException e) {
              throw new IllegalArgumentException(
                      "Cannot parse group includes/excludes expression(s):\nIncludes: " + groups + "\nExcludes: "
                              + excludedGroups,
                      e);
          }
      }
  
     public static void setGroupMatcher(GroupMatcher matcher) {
         GroupMatcherMethodSelector.matcher = matcher;
     }
 }