text: /*
   * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #pragma once
  
  #include <AK/FileStream.h>
  #include <AK/HashMap.h>
  #include <AK/NonnullOwnPtr.h>
  #include <AK/Optional.h>
  #include <AK/RefCounted.h>
  #include <AK/URL.h>
  #include <ProtocolServer/Forward.h>
  
  namespace ProtocolServer {
  
  class Download {
  public:
      virtual ~Download();
  
      i32 id() const { return m_id; }
      URL url() const { return m_url; }
  
      Optional<u32> status_code() const { return m_status_code; }
      Optional<u32> total_size() const { return m_total_size; }
      size_t downloaded_size() const { return m_downloaded_size; }
      const HashMap<String, String, CaseInsensitiveStringTraits>& response_headers() const { return m_response_headers; }
  
      void stop();
      virtual void set_certificate(String, String);
  
      // FIXME: Want Badge<Protocol>, but can't make one from HttpProtocol, etc.
      void set_download_fd(int fd) { m_download_fd = fd; }
      int download_fd() const { return m_download_fd; }
  
  protected:
      explicit Download(ClientConnection&, NonnullOwnPtr<OutputFileStream>&&);
  
      void did_finish(bool success);
      void did_progress(Optional<u32> total_size, u32 downloaded_size);
      void set_status_code(u32 status_code) { m_status_code = status_code; }
      void did_request_certificates();
      void set_response_headers(const HashMap<String, String, CaseInsensitiveStringTraits>&);
      void set_downloaded_size(size_t size) { m_downloaded_size = size; }
      const OutputFileStream& output_stream() const { return *m_output_stream; }
  
  private:
      ClientConnection& m_client;
      i32 m_id { 0 };
      int m_download_fd { -1 }; // Passed to client.
      URL m_url;
      Optional<u32> m_status_code;
      Optional<u32> m_total_size {};
      size_t m_downloaded_size { 0 };
      NonnullOwnPtr<OutputFileStream> m_output_stream;
      HashMap<String, String, CaseInsensitiveStringTraits> m_response_headers;
  };
  
  }
  