content: /*
   * Copyright 2022-2023 the original author or authors.
   *
   * 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
   *
   *      https://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 com.alibaba.initializer.core.template.loader;
  
  import java.util.Map;
  import java.util.function.Function;
  import java.util.stream.Collectors;
  
  import com.alibaba.initializer.core.template.CodeTemplateRepo;
  import com.alibaba.initializer.core.template.CodeTemplateRepoLoader;
  import org.apache.commons.lang3.StringUtils;
  import org.apache.commons.lang3.tuple.Pair;
  
  import org.springframework.beans.factory.InitializingBean;
  import org.springframework.context.ApplicationContext;
  
  /**
   * Responsible for finding specific loader and adding caching function
   *
   * @author <a href="mailto:chenxilzx1@gmail.com">theonefx</a>
   */
  public class RootRepoTemplateLoader implements CodeTemplateRepoLoader, InitializingBean {
  
      private static final String ROOT = "root";
  
      private final ApplicationContext context;
  
      private Map<String, CodeTemplateRepoLoader> loaderMap;
  
      public RootRepoTemplateLoader(ApplicationContext context) {
          this.context = context;
      }
  
      @Override
      public CodeTemplateRepo load(String uri) {
          return loadWithoutCache(uri);
      }
  
      public CodeTemplateRepo loadWithoutCache(String uri) {
          if (StringUtils.isBlank(uri)) {
              return null;
          }
  
          Pair<String, String> schemaAndPath = getSchemaPathPair(uri);
          if (schemaAndPath == null) {
              return null;
          }
  
          CodeTemplateRepoLoader loader = loaderMap.get(schemaAndPath.getKey());
          if (loader == null) {
              return null;
          }
          return loader.load(schemaAndPath.getValue());
      }
  
  
      private Pair<String, String> getSchemaPathPair(String uri) {
          int idx = uri.indexOf(":");
          if (idx > 0) {
              return Pair.of(uri.substring(0, idx), uri.substring(idx + 1));
          } else {
              return null;
          }
      }
  
      @Override
      public String getProtocol() {
          return ROOT;
      }
  
      @Override
      public void afterPropertiesSet() {
          Map<String, CodeTemplateRepoLoader> map = context.getBeansOfType(CodeTemplateRepoLoader.class);
          loaderMap = map.values().stream()
                  .filter(loader -> !StringUtils.equals(loader.getProtocol(), ROOT))
                  .collect(Collectors.toMap(CodeTemplateRepoLoader::getProtocol, Function.identity()));
      }
  }
  