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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_PREFS_H_
#define COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_PREFS_H_
#include <string>
#include "base/memory/raw_ptr.h"
class PrefService;
class PrefRegistrySimple;
namespace base {
class Clock;
} // namespace base
namespace syncer {
// Use this for determining if a cache guid was recently used by this device.
class DeviceInfoPrefs {
public:
static void RegisterProfilePrefs(PrefRegistrySimple* registry);
// |pref_service| and |clock| must outlive this class and be non null.
DeviceInfoPrefs(PrefService* pref_service, const base::Clock* clock);
DeviceInfoPrefs(const DeviceInfoPrefs&) = delete;
DeviceInfoPrefs& operator=(const DeviceInfoPrefs&) = delete;
~DeviceInfoPrefs();
// Returns if the given |cache_guid| is present in the saved pref. This is
// most reliable when dealing with recent devices only, due to garbage
// collection of local GUIDs, as per kMaxDaysLocalCacheGuidsStored.
bool IsRecentLocalCacheGuid(const std::string& cache_guid) const;
// Adds the given |cache_guid| to the internal list stored in prefs and
// exposed via IsRecentLocalCacheGuid(). If the |cache_guid| already exists,
// this will reset the expiry date for that entry.
void AddLocalCacheGuid(const std::string& cache_guid);
// Garbage-collects local cache GUIDs if too old.
void GarbageCollectExpiredCacheGuids();
private:
const raw_ptr<PrefService> pref_service_;
const raw_ptr<const base::Clock> clock_;
};
} // namespace syncer
#endif // COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_PREFS_H_
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