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// Copyright 2020 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.
#include <string>
#include <base/files/file_path.h>
#include "dlcservice/boot/boot_slot.h"
#include "dlcservice/dlc.h"
namespace dlcservice {
extern const char kDlcPrefVerified[];
extern const char kDlcRootMount[];
// |Prefs| class can be used to persist key value pairs to disk.
class Prefs {
// Initializes prefs with root as |prefs_root|.
explicit Prefs(const base::FilePath& prefs_root);
// Initializes prefs starting path using |SystemState::dlc_prefs_dir()| with
// |DlcBase|'s DLC ID and |BootSlot::Slot|.
Prefs(const DlcBase& dlc, BootSlot::Slot slot);
// Sets the given |value| for |key|, creating the |key| if it did not exist.
bool SetKey(const std::string& key, const std::string& value);
// Gets the given |key|'s value into |value|. Returns false if |key| did not
// exist.
bool GetKey(const std::string& key, std::string* value);
// Creates the given |key| with empty value.
bool Create(const std::string& key);
// Returns true if the |key| exists.
bool Exists(const std::string& key);
// Removes the |key|.
bool Delete(const std::string& key);
base::FilePath prefs_root_;
Prefs(const Prefs&) = delete;
Prefs& operator=(const Prefs&) = delete;
} // namespace dlcservice