/*
    * 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.repository.metadata;
  
  import org.apache.maven.artifact.ArtifactScopeEnum;
  import org.codehaus.plexus.PlexusContainer;
  import org.codehaus.plexus.component.repository.exception.ComponentLookupException;
  
  /**
   * This object is tinted with ClasspathTransformation and GraphConflictResolver.
   * Get rid of them after debugging
   *
   * @author <a href="oleg@codehaus.org">Oleg Gusakov</a>
   */
  public class MetadataResolutionResult {
      MetadataTreeNode treeRoot;
  
      /**
       * these components are initialized on demand by
       * explicit call of the initTreeProcessing()
       */
      ClasspathTransformation classpathTransformation;
  
      GraphConflictResolver conflictResolver;
  
      // ----------------------------------------------------------------------------
      public MetadataResolutionResult() {}
      // ----------------------------------------------------------------------------
      public MetadataResolutionResult(MetadataTreeNode root) {
          this.treeRoot = root;
      }
      // ----------------------------------------------------------------------------
      public MetadataTreeNode getTree() {
          return treeRoot;
      }
      // ----------------------------------------------------------------------------
      public void setTree(MetadataTreeNode root) {
          this.treeRoot = root;
      }
  
      public void initTreeProcessing(PlexusContainer plexus) throws ComponentLookupException {
          classpathTransformation = plexus.lookup(ClasspathTransformation.class);
          conflictResolver = plexus.lookup(GraphConflictResolver.class);
      }
      // ----------------------------------------------------------------------------
      public MetadataGraph getGraph() throws MetadataResolutionException {
          return treeRoot == null ? null : new MetadataGraph(treeRoot);
      }
      // ----------------------------------------------------------------------------
      public MetadataGraph getGraph(ArtifactScopeEnum scope)
              throws MetadataResolutionException, GraphConflictResolutionException {
          if (treeRoot == null) {
              return null;
          }
  
          if (conflictResolver == null) {
              return null;
          }
  
          return conflictResolver.resolveConflicts(getGraph(), scope);
      }
      // ----------------------------------------------------------------------------
      public MetadataGraph getGraph(MetadataResolutionRequestTypeEnum requestType)
              throws MetadataResolutionException, GraphConflictResolutionException {
          if (requestType == null) {
              return null;
          }
  
          if (treeRoot == null) {
              return null;
          }
  
          if (conflictResolver == null) {
              return null;
          }
  
          if (requestType.equals(MetadataResolutionRequestTypeEnum.classpathCompile)) {
              return conflictResolver.resolveConflicts(getGraph(), ArtifactScopeEnum.compile);
          } else if (requestType.equals(MetadataResolutionRequestTypeEnum.classpathRuntime)) {
              return conflictResolver.resolveConflicts(getGraph(), ArtifactScopeEnum.runtime);
          } else if (requestType.equals(MetadataResolutionRequestTypeEnum.classpathTest)) {
              return conflictResolver.resolveConflicts(getGraph(), ArtifactScopeEnum.test);
          } else if (requestType.equals(MetadataResolutionRequestTypeEnum.graph)) {
             return getGraph();
         } else if (requestType.equals(MetadataResolutionRequestTypeEnum.versionedGraph)) {
             return new MetadataGraph(getTree(), true, false);
         } else if (requestType.equals(MetadataResolutionRequestTypeEnum.scopedGraph)) {
             return new MetadataGraph(getTree(), true, true);
         }
         return null;
     }
     // ----------------------------------------------------------------------------
     public ClasspathContainer getClasspath(ArtifactScopeEnum scope)
             throws MetadataGraphTransformationException, MetadataResolutionException {
         if (classpathTransformation == null) {
             return null;
         }
 
         MetadataGraph dirtyGraph = getGraph();
         if (dirtyGraph == null) {
             return null;
         }
 
         return classpathTransformation.transform(dirtyGraph, scope, false);
     }
 
     // ----------------------------------------------------------------------------
     public MetadataTreeNode getClasspathTree(ArtifactScopeEnum scope)
             throws MetadataGraphTransformationException, MetadataResolutionException {
         ClasspathContainer cpc = getClasspath(scope);
         if (cpc == null) {
             return null;
         }
 
         return cpc.getClasspathAsTree();
     }
     // ----------------------------------------------------------------------------
     // ----------------------------------------------------------------------------
 }