/*
    * 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.lifecycle.mapping;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.LinkedHashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Optional;
  import java.util.function.Function;
  import java.util.stream.Collectors;
  
  /**
   * Mojo (goals) bindings to a lifecycle phase.
   *
   * @see LifecycleMojo
   */
  public class LifecyclePhase {
  
      private List<LifecycleMojo> mojos;
  
      public LifecyclePhase() {}
  
      public LifecyclePhase(String goals) {
          set(goals);
      }
  
      public List<LifecycleMojo> getMojos() {
          return mojos;
      }
  
      public void setMojos(List<LifecycleMojo> mojos) {
          this.mojos = mojos;
      }
  
      public void set(String goals) {
          mojos = new ArrayList<>();
  
          if (goals != null && !goals.isEmpty()) {
              String[] mojoGoals = goals.split(",");
              mojos = Arrays.stream(mojoGoals).map(fromGoalIntoLifecycleMojo).collect(Collectors.toList());
          }
      }
  
      private final Function<String, LifecycleMojo> fromGoalIntoLifecycleMojo = s -> {
          LifecycleMojo lifecycleMojo = new LifecycleMojo();
          lifecycleMojo.setGoal(s.trim());
          return lifecycleMojo;
      };
  
      @Override
      public String toString() {
          return Optional.ofNullable(getMojos()).orElse(Collections.emptyList()).stream()
                  .map(LifecycleMojo::getGoal)
                  .collect(Collectors.joining(","));
      }
  
      @Deprecated
      public static Map<String, String> toLegacyMap(Map<String, LifecyclePhase> lifecyclePhases) {
          if (lifecyclePhases == null) {
              return null;
          }
  
          if (lifecyclePhases.isEmpty()) {
              return Collections.emptyMap();
          }
  
          Map<String, String> phases = new LinkedHashMap<>();
          for (Map.Entry<String, LifecyclePhase> e : lifecyclePhases.entrySet()) {
              phases.put(e.getKey(), e.getValue().toString());
          }
          return phases;
      }
  }