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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_SCANNER_SCANNER_ACTION_HANDLER_H_
#define ASH_SCANNER_SCANNER_ACTION_HANDLER_H_
#include <string_view>
#include "ash/ash_export.h"
#include "ash/scanner/scanner_command.h"
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
namespace manta::proto {
class ScannerAction;
}
namespace ash {
class ScannerCommandDelegate;
// The callback which is called when a command to the system is finished. A
// boolean is provided to signify whether the command succeeded or not.
using ScannerCommandCallback = base::OnceCallback<void(bool success)>;
// Converts a `manta::proto::ScannerAction` to a `ScannerCommand` for use in
// `HandleScannerCommand`.
// `action.action_case()` must not be `ACTION_NOT_SET`.
ASH_EXPORT ScannerCommand
ScannerActionToCommand(manta::proto::ScannerAction action);
// Given a ScannerCommand this method will apply the contained command to the
// system. The callback passed will be invoked after the action has completed,
// with a bool specifying if the command was completed successfully.
//
// Requires a `ScannerCommandDelegate` to perform the actions given. All calls
// to `delegate`'s methods are guaranteed to be on the same sequence as the
// sequence which called this function.
//
// As `delegate`'s methods may be called asynchronously from this function, this
// function expects a weak pointer to it to ensure that use after free errors do
// not occur. If at any point `delegate` is null when this function attempts to
// call methods on `delegate`, `callback` will be called with a success value of
// false.
ASH_EXPORT void HandleScannerCommand(
base::WeakPtr<ScannerCommandDelegate> delegate,
ScannerCommand command,
ScannerCommandCallback callback);
} // namespace ash
#endif // ASH_SCANNER_SCANNER_ACTION_HANDLER_H_
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