/*
    * 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.archetype.source;
  
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.io.Reader;
  import java.util.Iterator;
  import java.util.List;
  
  import org.apache.maven.archetype.catalog.Archetype;
  import org.apache.maven.archetype.catalog.ArchetypeCatalog;
  import org.codehaus.plexus.util.xml.XmlStreamReader;
  import org.eclipse.aether.RepositorySystemSession;
  import org.eclipse.aether.repository.RemoteRepository;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  @Named("catalog")
  @Singleton
  public class LocalCatalogArchetypeDataSource extends CatalogArchetypeDataSource {
      private static final Logger LOGGER = LoggerFactory.getLogger(LocalCatalogArchetypeDataSource.class);
  
      @Override
      public File updateCatalog(RepositorySystemSession repositorySession, Archetype archetype)
              throws ArchetypeDataSourceException {
          File localRepo = repositorySession.getLocalRepository().getBasedir();
  
          File catalogFile = new File(localRepo, ARCHETYPE_CATALOG_FILENAME);
  
          LOGGER.debug("Catalog to be used for update: " + catalogFile.getAbsolutePath());
  
          ArchetypeCatalog catalog;
          if (catalogFile.exists()) {
              try (Reader reader = new XmlStreamReader(catalogFile)) {
                  LOGGER.debug("Reading catalog to be updated: " + catalogFile);
                  catalog = readCatalog(reader);
              } catch (FileNotFoundException ex) {
                  LOGGER.debug("Catalog file don't exist");
                  catalog = new ArchetypeCatalog();
              } catch (IOException e) {
                  throw new ArchetypeDataSourceException("Error reading archetype catalog.", e);
              }
          } else {
              LOGGER.debug("Catalog file don't exist");
              catalog = new ArchetypeCatalog();
          }
  
          Iterator<Archetype> archetypes = catalog.getArchetypes().iterator();
          boolean found = false;
          Archetype newArchetype = archetype;
          while (!found && archetypes.hasNext()) {
              Archetype a = archetypes.next();
              if (a.getGroupId().equals(archetype.getGroupId())
                      && a.getArtifactId().equals(archetype.getArtifactId())) {
                  newArchetype = a;
                  found = true;
              }
          }
          if (!found) {
              catalog.addArchetype(newArchetype);
          }
  
          newArchetype.setVersion(archetype.getVersion());
          newArchetype.setRepository(archetype.getRepository());
          newArchetype.setDescription(archetype.getDescription());
          newArchetype.setProperties(archetype.getProperties());
          newArchetype.setGoals(archetype.getGoals());
  
          writeLocalCatalog(catalog, catalogFile);
          return catalogFile;
      }
  
      @Override
      public ArchetypeCatalog getArchetypeCatalog(
              RepositorySystemSession repositorySession, List<RemoteRepository> remoteRepositories)
              throws ArchetypeDataSourceException {
  
          File localRepo = repositorySession.getLocalRepository().getBasedir();
 
         File catalogFile = new File(localRepo, ARCHETYPE_CATALOG_FILENAME);
 
         if (catalogFile.exists() && catalogFile.isDirectory()) {
             catalogFile = new File(catalogFile, ARCHETYPE_CATALOG_FILENAME);
         }
         LOGGER.debug("Getting archetypes from catalog: " + catalogFile);
 
         if (catalogFile.exists()) {
             try {
                 return readCatalog(new XmlStreamReader(catalogFile));
             } catch (FileNotFoundException e) {
                 throw new ArchetypeDataSourceException("The specific archetype catalog does not exist.", e);
             } catch (IOException e) {
                 throw new ArchetypeDataSourceException("Error reading archetype catalog.", e);
             }
         } else {
             return new ArchetypeCatalog();
         }
     }
 }