/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef DOM_FS_CHILD_FILESYSTEMBACKGROUNDREQUESTHANDLER_H_
#define DOM_FS_CHILD_FILESYSTEMBACKGROUNDREQUESTHANDLER_H_

#include "mozilla/MozPromise.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/dom/FileSystemManagerChild.h"
#include "mozilla/dom/quota/ForwardDecls.h"
#include "mozilla/ipc/PBackgroundChild.h"

template <class T>
class RefPtr;

namespace mozilla {

namespace ipc {
class PrincipalInfo;
}  // namespace ipc

namespace dom {

namespace fs {
class FileSystemChildFactory;
}

class FileSystemBackgroundRequestHandler {
 public:
  explicit FileSystemBackgroundRequestHandler(
      fs::FileSystemChildFactory* aChildFactory);

  explicit FileSystemBackgroundRequestHandler(
      RefPtr<FileSystemManagerChild> aFileSystemManagerChild);

  FileSystemBackgroundRequestHandler();

  NS_INLINE_DECL_REFCOUNTING(FileSystemBackgroundRequestHandler)

  void ClearActor();

  void Shutdown();

  const RefPtr<FileSystemManagerChild>& FileSystemManagerChildStrongRef() const;

  virtual RefPtr<FileSystemManagerChild::ActorPromise>
  CreateFileSystemManagerChild(
      const mozilla::ipc::PrincipalInfo& aPrincipalInfo);

 protected:
  virtual ~FileSystemBackgroundRequestHandler();

  const UniquePtr<fs::FileSystemChildFactory> mChildFactory;

  MozPromiseRequestHolder<
      mozilla::ipc::PBackgroundChild::CreateFileSystemManagerParentPromise>
      mCreateFileSystemManagerParentPromiseRequestHolder;
  MozPromiseHolder<FileSystemManagerChild::ActorPromise>
      mCreateFileSystemManagerChildPromiseHolder;

  RefPtr<FileSystemManagerChild> mFileSystemManagerChild;

  FlippedOnce<false> mShutdown;

  bool mCreatingFileSystemManagerChild;
};  // class FileSystemBackgroundRequestHandler

}  // namespace dom
}  // namespace mozilla

#endif  // DOM_FS_CHILD_FILESYSTEMBACKGROUNDREQUESTHANDLER_H_