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;
  
  import java.io.IOException;
  import java.io.Reader;
  import java.net.URI;
  import java.nio.file.Path;
  import java.nio.file.Paths;
  import java.util.Collections;
  import java.util.List;
  import java.util.stream.Collectors;
  
  import lombok.SneakyThrows;
  import org.apache.commons.lang3.StringUtils;
  
  /**
   * @author <a href="mailto:chenxilzx1@gmail.com">theonefx</a>
   */
  public class CodeTemplateRepo {
  
      private final URI uri;
  
      private final List<CodeTemplate> templates;
  
      public CodeTemplateRepo(URI uri, List<CodeTemplate> templates) {
          this.templates = Collections.unmodifiableList(templates);
          this.uri = uri;
      }
  
      public List<CodeTemplate> getTemplates() {
          return templates;
      }
  
      public URI getUri() {
          return uri;
      }
  
      public CodeTemplate getTemplate(String path) {
          Path p = Paths.get(path);
          return templates.stream().filter(temp -> temp.getFullPath().equals(p)).findFirst().orElse(null);
      }
  
      @SneakyThrows
      public CodeTemplateRepo subRepo(String subRoot) {
          if (StringUtils.isBlank(subRoot) || ".".equalsIgnoreCase(subRoot)) {
              return this;
          }
  
          Path subPathPrefix = Paths.get(subRoot);
  
          List<CodeTemplate> subResourcesList = templates
                  .stream()
                  .filter(temp -> temp.getFullPath().startsWith(subPathPrefix))
                  .map(source -> {
                      Path folder = subPathPrefix.relativize(source.getFullPath());
                      String name = source.getFileName();
                      return new CodeTemplate(folder, name) {
                          @Override
                          public Reader getReader() throws IOException {
                              return source.getReader();
                          }
                      };
                  })
                  .collect(Collectors.toList());
  
  
          String path = uri.getPath();
          if (path == null) {
              path = "";
          }
  
          if (path.endsWith("/")) {
              path += subRoot;
          } else {
              path += "/" + subRoot;
          }
          URI subUri = new URI(uri.getScheme(), uri.getUserInfo(), uri.getHost(), uri.getPort(), path, uri.getQuery(), uri.getFragment());
          return new CodeTemplateRepo(subUri, subResourcesList);
      }
  
      public void cleanup() {
          if (templates == null) {
              return;
          }
  
          templates.forEach(CodeTemplate::cleanup);
      }
  }
  