/*
    * 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.eclipse.aether.internal.impl.version;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.util.Collections;
  import java.util.Map;
  
  import org.eclipse.aether.ConfigurationProperties;
  import org.eclipse.aether.RepositorySystemSession;
  import org.eclipse.aether.spi.version.VersionSchemeSelector;
  import org.eclipse.aether.util.ConfigUtils;
  import org.eclipse.aether.version.VersionScheme;
  
  import static java.util.Objects.requireNonNull;
  
  /**
   * Default implementation.
   *
   * @since 2.0.0
   */
  @Singleton
  @Named
  public class DefaultVersionSchemeSelector implements VersionSchemeSelector {
      static final String CONFIG_PROPS_PREFIX = ConfigurationProperties.PREFIX_AETHER + "versionScheme.";
  
      /**
       * The name of the version scheme to be used in session.
       *
       * @configurationSource {@link RepositorySystemSession#getConfigProperties()}
       * @configurationType {@link java.lang.String}
       * @configurationDefaultValue {@link #DEFAULT_VERSION_SCHEME_NAME}
       */
      public static final String CONFIG_PROP_VERSION_SCHEME_NAME = CONFIG_PROPS_PREFIX + "name";
  
      public static final String DEFAULT_VERSION_SCHEME_NAME = GenericVersionSchemeProvider.NAME;
  
      private final Map<String, VersionScheme> versionSchemes;
  
      @Inject
      public DefaultVersionSchemeSelector(Map<String, VersionScheme> versionSchemes) {
          this.versionSchemes = requireNonNull(versionSchemes);
      }
  
      @Override
      public VersionScheme selectVersionScheme(String schemeName) {
          requireNonNull(schemeName, "null schemeName");
          VersionScheme versionScheme = versionSchemes.get(schemeName);
          if (versionScheme == null) {
              throw new IllegalArgumentException("scheme not supported");
          }
          return versionScheme;
      }
  
      @Override
      public VersionScheme selectVersionScheme(RepositorySystemSession session) {
          return selectVersionScheme(
                  ConfigUtils.getString(session, DEFAULT_VERSION_SCHEME_NAME, CONFIG_PROP_VERSION_SCHEME_NAME));
      }
  
      @Override
      public Map<String, VersionScheme> getVersionSchemes() {
          return Collections.unmodifiableMap(versionSchemes);
      }
  }