/*
    * Copyright (C) 2012 Jean-Christophe Gay (contact@jeanchristophegay.com)
    *
    * Licensed 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.codehaus.mojo.buildplan;
  
  import static org.codehaus.mojo.buildplan.util.Objects.firstNonNull;
  import static org.codehaus.plexus.util.StringUtils.isEmpty;
  
  import java.util.Collections;
  import java.util.List;
  import org.apache.maven.lifecycle.DefaultLifecycles;
  import org.apache.maven.lifecycle.Lifecycle;
  import org.apache.maven.plugin.MojoExecution;
  import org.codehaus.mojo.buildplan.util.LinkedMultimap;
  import org.codehaus.mojo.buildplan.util.Multimap;
  import org.codehaus.plexus.logging.console.ConsoleLogger;
  
  public class Groups {
  
      public static class ByPlugin {
  
          public static Multimap<String, MojoExecution> of(List<MojoExecution> executions) {
              return of(executions, null);
          }
  
          public static Multimap<String, MojoExecution> of(List<MojoExecution> executions, String artifactIdFilter) {
              Multimap<String, MojoExecution> result = new LinkedMultimap<>();
              boolean notFiltering = isEmpty(artifactIdFilter);
              for (MojoExecution execution : executions) {
                  if (notFiltering || execution.getArtifactId().equalsIgnoreCase(artifactIdFilter)) {
                      result.put(execution.getArtifactId(), execution);
                  }
              }
              return result;
          }
      }
  
      public static class ByPhase {
  
          public static Multimap<String, MojoExecution> of(List<MojoExecution> plan) {
              return of(plan, new Options(defaultLifecycles()));
          }
  
          public static Multimap<String, MojoExecution> of(List<MojoExecution> executions, String phaseFilter) {
              return of(executions, new Options(defaultLifecycles()).forPhase(phaseFilter));
          }
  
          public static Multimap<String, MojoExecution> of(List<MojoExecution> executions, Options options) {
              Multimap<String, MojoExecution> result = new LinkedMultimap<>();
              boolean notFiltering = isEmpty(options.phase);
              for (MojoExecution execution : executions) {
                  String phase = firstNonNull(execution.getLifecyclePhase(), "<no phase>");
                  if (options.showingAllPhases) {
                      Lifecycle lifecycle = options.defaultLifecycles.get(phase);
                      if (lifecycle != null) {
                          lifecycle
                                  .getPhases()
                                  .forEach(defaultPhase -> result.put(defaultPhase, NoMojoExecution.INSTANCE));
                      }
                  }
                  if (notFiltering || phase.equalsIgnoreCase(options.phase)) {
                      result.put(phase, execution);
                  }
              }
              return result;
          }
  
          private static DefaultLifecycles defaultLifecycles() {
              return new DefaultLifecycles(Collections.emptyMap(), new ConsoleLogger());
          }
      }
  
      public static class Options {
  
          private final DefaultLifecycles defaultLifecycles;
  
          private String phase;
          private boolean showingAllPhases;
          private boolean showingLifecycles;
  
          public Options(DefaultLifecycles defaultLifecycles) {
              this.defaultLifecycles = defaultLifecycles;
          }
  
          public Options forPhase(String phase) {
              this.phase = phase;
              return this;
         }
 
         public Options showingAllPhases() {
             this.showingAllPhases = true;
             return this;
         }
 
         public Options showingLifecycles() {
             this.showingLifecycles = true;
             return this;
         }
     }
 }