rmad/state_handler/base_state_handler.h

// Copyright 2021 The Chromium OS 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 RMAD_STATE_HANDLER_BASE_STATE_HANDLER_H_
#define RMAD_STATE_HANDLER_BASE_STATE_HANDLER_H_

#include <base/memory/ref_counted.h>

#include "rmad/proto_bindings/rmad.pb.h"
#include "rmad/utils/json_store.h"

namespace rmad {

class BaseStateHandler : public base::RefCounted<BaseStateHandler> {
 public:
  explicit BaseStateHandler(JsonStore* json_store);
  virtual ~BaseStateHandler() = default;

  // Returns the RmadState that the class handles. This can be declared by the
  // macro ASSIGN_STATE(state).
  virtual RmadState GetState() const = 0;

  // Returns the next RmadState in the RMA flow depending on device status and
  // user input (e.g. json_store_ content).
  virtual RmadState GetNextState() const = 0;

 protected:
  JsonStore* json_store_;
};

#define ASSIGN_STATE(state) \
  RmadState GetState() const override { return state; }

}  // namespace rmad

#endif  // RMAD_STATE_HANDLER_BASE_STATE_HANDLER_H_