/*
    * 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.internal;
  
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.util.Iterator;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  import java.util.TreeSet;
  
  import org.apache.maven.lifecycle.MavenExecutionPlan;
  import org.apache.maven.lifecycle.internal.builder.BuilderCommon;
  import org.apache.maven.plugin.MojoExecution;
  import org.apache.maven.plugin.descriptor.MojoDescriptor;
  import org.apache.maven.project.MavenProject;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * <p>
   * Logs debug output from the various lifecycle phases.
   * </p>
   * <strong>NOTE:</strong> This class is not part of any public api and can be changed or deleted without prior notice.
   *
   * @since 3.0
   */
  @Named
  @Singleton
  public class LifecycleDebugLogger {
      private final Logger logger = LoggerFactory.getLogger(getClass());
  
      public void debug(String s) {
          logger.debug(s);
      }
  
      public void info(String s) {
          logger.info(s);
      }
  
      public void debugReactorPlan(ProjectBuildList projectBuilds) {
          if (!logger.isDebugEnabled()) {
              return;
          }
  
          logger.debug("=== REACTOR BUILD PLAN ================================================");
  
          for (Iterator<ProjectSegment> it = projectBuilds.iterator(); it.hasNext(); ) {
              ProjectSegment projectBuild = it.next();
  
              logger.debug("Project: " + projectBuild.getProject().getId());
              logger.debug("Tasks:   " + projectBuild.getTaskSegment().getTasks());
              logger.debug("Style:   " + (projectBuild.getTaskSegment().isAggregating() ? "Aggregating" : "Regular"));
  
              if (it.hasNext()) {
                  logger.debug("-----------------------------------------------------------------------");
              }
          }
  
          logger.debug("=======================================================================");
      }
  
      public void debugProjectPlan(MavenProject currentProject, MavenExecutionPlan executionPlan) {
          if (!logger.isDebugEnabled()) {
              return;
          }
  
          logger.debug("=== PROJECT BUILD PLAN ================================================");
          logger.debug("Project:       " + BuilderCommon.getKey(currentProject));
  
          debugDependencyRequirements(executionPlan.getMojoExecutions());
  
          logger.debug("Repositories (dependencies): " + currentProject.getRemoteProjectRepositories());
          logger.debug("Repositories (plugins)     : " + currentProject.getRemotePluginRepositories());
  
          for (ExecutionPlanItem mojoExecution : executionPlan) {
              debugMojoExecution(mojoExecution.getMojoExecution());
          }
  
          logger.debug("=======================================================================");
      }
 
     private void debugMojoExecution(MojoExecution mojoExecution) {
         String mojoExecId =
                 mojoExecution.getGroupId() + ':' + mojoExecution.getArtifactId() + ':' + mojoExecution.getVersion()
                         + ':' + mojoExecution.getGoal() + " (" + mojoExecution.getExecutionId() + ')';
 
         Map<String, List<MojoExecution>> forkedExecutions = mojoExecution.getForkedExecutions();
         if (!forkedExecutions.isEmpty()) {
             for (Map.Entry<String, List<MojoExecution>> fork : forkedExecutions.entrySet()) {
                 logger.debug("--- init fork of " + fork.getKey() + " for " + mojoExecId + " ---");
 
                 debugDependencyRequirements(fork.getValue());
 
                 for (MojoExecution forkedExecution : fork.getValue()) {
                     debugMojoExecution(forkedExecution);
                 }
 
                 logger.debug("--- exit fork of " + fork.getKey() + " for " + mojoExecId + " ---");
             }
         }
 
         logger.debug("-----------------------------------------------------------------------");
         logger.debug("Goal:          " + mojoExecId);
         logger.debug(
                 "Style:         " + (mojoExecution.getMojoDescriptor().isAggregator() ? "Aggregating" : "Regular"));
         logger.debug("Configuration: " + mojoExecution.getConfiguration());
     }
 
     private void debugDependencyRequirements(List<MojoExecution> mojoExecutions) {
         Set<String> scopesToCollect = new TreeSet<>();
         Set<String> scopesToResolve = new TreeSet<>();
 
         for (MojoExecution mojoExecution : mojoExecutions) {
             MojoDescriptor mojoDescriptor = mojoExecution.getMojoDescriptor();
 
             String scopeToCollect = mojoDescriptor.getDependencyCollectionRequired();
             if (scopeToCollect != null && !scopeToCollect.isEmpty()) {
                 scopesToCollect.add(scopeToCollect);
             }
 
             String scopeToResolve = mojoDescriptor.getDependencyResolutionRequired();
             if (scopeToResolve != null && !scopeToResolve.isEmpty()) {
                 scopesToResolve.add(scopeToResolve);
             }
         }
 
         logger.debug("Dependencies (collect): " + scopesToCollect);
         logger.debug("Dependencies (resolve): " + scopesToResolve);
     }
 }