/*
    * 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.shared.dependency.graph.internal;
  
  import java.util.List;
  
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.model.Exclusion;
  import org.apache.maven.shared.dependency.graph.DependencyNode;
  
  class VerboseDependencyNode extends DefaultDependencyNode {
  
      private final ConflictData data;
  
      VerboseDependencyNode(
              DependencyNode parent,
              Artifact artifact,
              String premanagedVersion,
              String premanagedScope,
              String versionConstraint,
              Boolean optional,
              List<Exclusion> exclusions,
              ConflictData data) {
          super(parent, artifact, premanagedVersion, premanagedScope, versionConstraint, optional, exclusions);
  
          this.data = data;
      }
  
      @Override
      public String toNodeString() {
          StringBuilder buffer = new StringBuilder();
  
          boolean included = (data.getWinnerVersion() == null);
  
          if (!included) {
              buffer.append('(');
          }
  
          buffer.append(getArtifact());
  
          ItemAppender appender = new ItemAppender(buffer, included ? " (" : " - ", "; ", included ? ")" : "");
  
          if (getPremanagedVersion() != null) {
              appender.append("version managed from ", getPremanagedVersion());
          }
  
          if (getPremanagedScope() != null) {
              appender.append("scope managed from ", getPremanagedScope());
          }
  
          if (data.getOriginalScope() != null) {
              appender.append("scope updated from ", data.getOriginalScope());
          }
  
          if (data.getIgnoredScope() != null) {
              appender.append("scope not updated to ", data.getIgnoredScope());
          }
  
          //        if ( getVersionSelectedFromRange() != null )
          //        {
          //            appender.append( "version selected from range ", getVersionSelectedFromRange().toString() );
          //            appender.append( "available versions ", getAvailableVersions().toString() );
          //        }
  
          if (!included) {
              String winnerVersion = data.getWinnerVersion();
              if (winnerVersion.equals(getArtifact().getVersion())) {
                  appender.append("omitted for duplicate");
              } else {
                  appender.append("omitted for conflict with ", winnerVersion);
              }
          }
  
          appender.flush();
  
          if (!included) {
              buffer.append(')');
          }
  
          return buffer.toString();
      }
  
      /**
      * Utility class to concatenate a number of parameters with separator tokens.
      */
     private static class ItemAppender {
         private StringBuilder buffer;
 
         private String startToken;
 
         private String separatorToken;
 
         private String endToken;
 
         private boolean appended;
 
         ItemAppender(StringBuilder buffer, String startToken, String separatorToken, String endToken) {
             this.buffer = buffer;
             this.startToken = startToken;
             this.separatorToken = separatorToken;
             this.endToken = endToken;
 
             appended = false;
         }
 
         public ItemAppender append(String item1) {
             appendToken();
 
             buffer.append(item1);
 
             return this;
         }
 
         public ItemAppender append(String item1, String item2) {
             appendToken();
 
             buffer.append(item1).append(item2);
 
             return this;
         }
 
         public void flush() {
             if (appended) {
                 buffer.append(endToken);
 
                 appended = false;
             }
         }
 
         private void appendToken() {
             buffer.append(appended ? separatorToken : startToken);
 
             appended = true;
         }
     }
 }