// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_DOWNLOAD_DRAG_DOWNLOAD_UTIL_H_
#define CONTENT_BROWSER_DOWNLOAD_DRAG_DOWNLOAD_UTIL_H_

#include <string>

#include "base/files/file.h"
#include "content/browser/download/drag_download_file.h"
#include "ui/base/dragdrop/download_file_interface.h"

namespace base {
class FilePath;
}

namespace content {

// Create a new file at the specified path. If the file already exists, try to
// insert the sequential unifier to produce a new file, like foo-01.txt.
// Return a File if successful.
base::File CreateFileForDrop(base::FilePath* file_path);

// Implementation of DownloadFileObserver to finalize the download process.
class PromiseFileFinalizer : public ui::DownloadFileObserver {
 public:
  explicit PromiseFileFinalizer(
      std::unique_ptr<DragDownloadFile> drag_file_downloader);

  PromiseFileFinalizer(const PromiseFileFinalizer&) = delete;
  PromiseFileFinalizer& operator=(const PromiseFileFinalizer&) = delete;

  // DownloadFileObserver methods.
  void OnDownloadCompleted(const base::FilePath& file_path) override;
  void OnDownloadAborted() override;

 protected:
  ~PromiseFileFinalizer() override;

 private:
  void Cleanup();

  std::unique_ptr<DragDownloadFile> drag_file_downloader_;
};

}  // namespace content

#endif  // CONTENT_BROWSER_DOWNLOAD_DRAG_DOWNLOAD_UTIL_H_