/*
    * 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.providers;
  
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.LinkedHashMap;
  import javax.inject.Provider;
  import org.apache.maven.lifecycle.Lifecycle;
  import org.apache.maven.lifecycle.mapping.LifecyclePhase;
  
  /**
   * Base lifecycle provider.
   */
  public abstract class AbstractLifecycleProvider implements Provider<Lifecycle> {
      private final Lifecycle lifecycle;
  
      protected AbstractLifecycleProvider(String id, String[] phases, String[] pluginBindings) {
          HashMap<String, LifecyclePhase> defaultBindings = null;
          if (pluginBindings != null) {
              final int len = pluginBindings.length;
  
              if (len < 2 || len % 2 != 0) {
                  throw new IllegalArgumentException("Plugin bindings must have more than 0, even count of elements");
              }
  
              defaultBindings = new LinkedHashMap<>(len / 2);
  
              for (int i = 0; i < len; i += 2) {
                  defaultBindings.put(pluginBindings[i], new LifecyclePhase(pluginBindings[i + 1]));
              }
          }
  
          this.lifecycle = new Lifecycle(
                  id,
                  Collections.unmodifiableList(Arrays.asList(phases)),
                  defaultBindings == null ? null : Collections.unmodifiableMap(defaultBindings));
      }
  
      @Override
      public Lifecycle get() {
          return lifecycle;
      }
  }