/*
    * 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.basepom.mojo.repack;
  
  import static java.lang.String.format;
  
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Locale;
  import java.util.Map;
  import java.util.Set;
  import java.util.SortedMap;
  import java.util.function.BiConsumer;
  
  import com.google.common.base.Strings;
  import com.google.common.collect.ImmutableSortedMap;
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.shared.utils.logging.MessageBuilder;
  import org.apache.maven.shared.utils.logging.MessageUtils;
  
  final class Reporter {
  
      private static final PluginLog LOG = new PluginLog(Reporter.class);
  
      private static final Set<Artifact> runtimeUnpackedArtifacts = new HashSet<>();
      private static final Set<Artifact> optionalArtifacts = new HashSet<>();
      private static final Map<Artifact, String> excludedArtifacts = new HashMap<>();
      private static final Set<Artifact> includedArtifacts = new HashSet<>();
  
  
      static void addRuntimeUnpacked(Artifact artifact) {
          runtimeUnpackedArtifacts.add(artifact);
      }
  
      static void addOptional(Artifact artifact) {
          optionalArtifacts.add(artifact);
      }
  
      static void addExcluded(Artifact artifact, String reason) {
          excludedArtifacts.put(artifact, reason);
      }
  
      static void addIncluded(Artifact artifact) {
          includedArtifacts.add(artifact);
      }
  
      public static void report(boolean quiet, Artifact source, String classifier) {
  
          LOG.report(quiet, "");
          header(quiet, format(Locale.ROOT, "Summary Report for: %s:%s (%s)", source.getGroupId(), source.getArtifactId(), classifier));
          LOG.report(quiet, "");
  
          header(quiet, "Included dependencies (" + includedArtifacts.size() + ")");
          logReport(quiet, includedArtifacts, (messageBuilder, artifact) -> messageBuilder.strong(artifact.getScope()));
  
          header(quiet, "Included optional dependencies (" + optionalArtifacts.size() + ")");
          logReport(quiet, optionalArtifacts, null);
  
          header(quiet, "Excluded dependencies (" + excludedArtifacts.size() + ")");
          logReport(quiet, excludedArtifacts.keySet(), (messageBuilder, artifact) -> messageBuilder.strong(excludedArtifacts.get(artifact)));
  
          header(quiet, "Runtime unpacked dependencies (" + runtimeUnpackedArtifacts.size() + ")");
          logReport(quiet, runtimeUnpackedArtifacts, null);
      }
  
      private static void header(boolean quiet, String value) {
          LOG.report(quiet, value);
          LOG.report(quiet, Strings.repeat("=", value.length()));
      }
  
      private static void logReport(boolean quiet, Set<Artifact> artifacts, BiConsumer<MessageBuilder, Artifact> consumer) {
          if (!artifacts.isEmpty()) {
              SortedMap<String, Artifact> names = computeNames(artifacts);
              final int namePadding = names.keySet().stream().map(String::length).reduce(0, Math::max);
  
              for (Map.Entry<String, Artifact> entry : names.entrySet()) {
                  final MessageBuilder mb = MessageUtils.buffer();
                  if (consumer == null) {
                      mb.a(entry.getKey());
                  } else {
                      mb.a(Strings.padEnd(entry.getKey() + ':', namePadding + 2, ' '));
                      consumer.accept(mb, entry.getValue());
                  }
                  LOG.report(quiet, "%s", mb);
              }
          }
          LOG.report(quiet, "");
     }
 
     private static SortedMap<String, Artifact> computeNames(Set<Artifact> artifacts) {
         ImmutableSortedMap.Builder<String, Artifact> builder = ImmutableSortedMap.naturalOrder();
         artifacts.forEach(a -> builder.put(computeArtifactName(a), a));
         return builder.build();
     }
 
     private static String computeArtifactName(Artifact artifact) {
         if (artifact.hasClassifier()) {
             return artifact.getGroupId() + ':' + artifact.getArtifactId() + ':' + artifact.getClassifier();
         } else {
             return artifact.getGroupId() + ':' + artifact.getArtifactId();
         }
     }
 }