// Copyright (c) 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SERVICE_EVICE_HID_HID_CONNECTION_FIDO_H_
#define SERVICE_DEVICE_HID_HID_CONNECTION_FIDO_H_

#include "base/files/scoped_file.h"
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "base/memory/ref_counted_memory.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "services/device/hid/hid_connection.h"

namespace device {

class HidConnectionFido : public HidConnection {
public:
  HidConnectionFido(
      scoped_refptr<HidDeviceInfo> device_info, base::ScopedFD fd,
      scoped_refptr<base::SequencedTaskRunner> blocking_task_runner);

private:
  friend class base::RefCountedThreadSafe<HidConnectionFido>;
  class BlockingTaskHelper;

  ~HidConnectionFido() override;

  // HidConnection implementation.
  void PlatformClose() override;
  void PlatformWrite(scoped_refptr<base::RefCountedBytes> buffer,
                     WriteCallback callback) override;
  void PlatformGetFeatureReport(uint8_t report_id,
                                ReadCallback callback) override;
  void PlatformSendFeatureReport(scoped_refptr<base::RefCountedBytes> buffer,
                                 WriteCallback callback) override;

  const scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
  const scoped_refptr<base::SequencedTaskRunner> task_runner_;

  SEQUENCE_CHECKER(sequence_checker_);

  base::WeakPtrFactory<HidConnectionFido> weak_factory_;

  // |helper_| lives on the sequence to which |blocking_task_runner_| posts
  // tasks so all calls must be posted there including this object's
  // destruction.
  std::unique_ptr<BlockingTaskHelper> helper_;

  DISALLOW_COPY_AND_ASSIGN(HidConnectionFido);
};

} // namespace device

#endif // SERVICE_DEVICE_HID_HID_CONNECTION_FIDO_H_