content: /*
   ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
   ~                                                                               ~
   ~ The MIT License (MIT)                                                         ~
   ~                                                                               ~
   ~ Copyright (c) 2015-2025 miaixz.org and other contributors.                    ~
   ~                                                                               ~
   ~ Permission is hereby granted, free of charge, to any person obtaining a copy  ~
   ~ of this software and associated documentation files (the "Software"), to deal ~
   ~ in the Software without restriction, including without limitation the rights  ~
   ~ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell     ~
   ~ copies of the Software, and to permit persons to whom the Software is         ~
   ~ furnished to do so, subject to the following conditions:                      ~
   ~                                                                               ~
   ~ The above copyright notice and this permission notice shall be included in    ~
   ~ all copies or substantial portions of the Software.                           ~
   ~                                                                               ~
   ~ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR    ~
   ~ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,      ~
   ~ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE   ~
   ~ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER        ~
   ~ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, ~
   ~ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN     ~
   ~ THE SOFTWARE.                                                                 ~
   ~                                                                               ~
   ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
  */
  package org.miaixz.bus.http.plugin.httpz;
  
  import java.io.IOException;
  
  import org.miaixz.bus.core.io.buffer.Buffer;
  import org.miaixz.bus.core.io.source.AssignSource;
  import org.miaixz.bus.core.io.source.BufferSource;
  import org.miaixz.bus.core.io.source.Source;
  import org.miaixz.bus.core.lang.MediaType;
  import org.miaixz.bus.core.xyz.IoKit;
  import org.miaixz.bus.http.Response;
  import org.miaixz.bus.http.bodys.ResponseBody;
  import org.miaixz.bus.http.metric.Interceptor;
  import org.miaixz.bus.http.metric.NewChain;
  
  /**
   * 请求参数-文件处理
   *
   * @author Kimi Liu
   * @since Java 17+
   */
  public abstract class FileInterceptor implements Interceptor, ProgressListener {
  
      @Override
      public Response intercept(NewChain chain) throws IOException {
          Response rsp = chain.proceed(chain.request());
          return rsp.newBuilder().body(new DownloadFileProgressResponseBody(rsp.body(), this)).build();
      }
  
      public abstract void updateProgress(long downloadLenth, long totalLength, boolean isFinish);
  
      public static class DownloadFileProgressResponseBody extends ResponseBody {
  
          private final ResponseBody body;
          private final ProgressListener progressListener;
          private BufferSource bufferSource;
  
          public DownloadFileProgressResponseBody(ResponseBody body, ProgressListener progressListener) {
              this.body = body;
              this.progressListener = progressListener;
          }
  
          @Override
          public MediaType contentType() {
              return body.contentType();
          }
  
          @Override
          public long length() {
              return body.length();
          }
  
          @Override
          public BufferSource source() {
              if (null == bufferSource) {
                  bufferSource = IoKit.buffer(source(body.source()));
              }
              return bufferSource;
          }
  
          private Source source(Source source) {
              return new AssignSource(source) {
  
                  long downloadLenth = 0L;
  
                  @Override
                  public long read(Buffer sink, long byteCount) throws IOException {
                      long bytesRead = super.read(sink, byteCount);
                      boolean isFinish = (bytesRead == -1);
                      if (!isFinish) {
                          downloadLenth += bytesRead;
                      }
                      progressListener.updateProgress(downloadLenth, body.length(), isFinish);
                      return bytesRead;
                  }
              };
          }
  
      }
  
  }
  