content: /*
   * Copyright [2024] [name of copyright owner]
   *
   * 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
   *
   *     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 com.aliyun.fastmodel.driver.cli.terminal.printer;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.Writer;
  import java.util.List;
  import java.util.UUID;
  import java.util.stream.Collectors;
  
  import com.alibaba.fastjson.JSONArray;
  import com.alibaba.fastjson.JSONObject;
  
  import com.aliyun.fastmodel.driver.model.DriverColumnInfo;
  import com.aliyun.fastmodel.driver.model.DriverRow;
  import org.apache.commons.io.FileUtils;
  
  /**
   * DumpFilePrinter
   *
   * @author panguanjing
   * @date 2024/9/30
   */
  public class DumpFilePrinter implements OutputPrinter {
  
      private final List<String> fieldNames;
  
      private final String fileName;
  
      private final Writer writer;
  
      public DumpFilePrinter(List<DriverColumnInfo> columnInfos, String fileName, Writer writer) {
          String property = System.getProperty("user.dir");
          this.fileName = fileName == null ? property + "/" + UUID.randomUUID() + ".json" : fileName;
          this.writer = writer;
          fieldNames = columnInfos.stream().map(DriverColumnInfo::getColumnName).collect(Collectors.toList());
      }
  
      @Override
      public void printRows(List<DriverRow> rows) throws IOException {
          JSONArray jsonArray = new JSONArray();
          for (DriverRow row : rows) {
              JSONObject jsonObject = new JSONObject();
              for (int i = 0; i < fieldNames.size(); i++) {
                  jsonObject.put(fieldNames.get(i), row.getValue(i));
              }
              jsonArray.add(jsonObject);
          }
          FileUtils.writeStringToFile(new File(fileName), jsonArray.toJSONString());
      }
  
      @Override
      public void finish() throws IOException {
          writer.append(String.format("dump file (%s)%n", fileName));
          writer.flush();
      }
  }
  