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// Copyright 2023 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_VARIATIONS_VARIATIONS_SAFE_SEED_STORE_LOCAL_STATE_H_
#define COMPONENTS_VARIATIONS_VARIATIONS_SAFE_SEED_STORE_LOCAL_STATE_H_
#include "base/component_export.h"
#include "base/memory/raw_ptr.h"
#include "base/time/time.h"
#include "base/version_info/channel.h"
#include "components/variations/seed_reader_writer.h"
#include "components/variations/variations_safe_seed_store.h"
class PrefService;
class PrefRegistrySimple;
namespace variations {
class EntropyProviders;
// Implementation of VariationsSafeSeedStore that uses local state and the
// standard prefs from it.
class COMPONENT_EXPORT(VARIATIONS) VariationsSafeSeedStoreLocalState
: public VariationsSafeSeedStore {
public:
// |local_state| should generally be the same value that VariationsSeedStore
// uses.
// |seed_file_dir| is the file path to the seed file directory. If empty, the
// seed is not stored in a separate seed file, only in |local_state_|.
// |channel| describes the release channel of the browser.
// |entropy_providers| is used to provide entropy when setting up the seed
// file field trial. If null, the client will not participate in the
// experiment.
explicit VariationsSafeSeedStoreLocalState(
PrefService* local_state,
const base::FilePath& seed_file_dir,
version_info::Channel channel,
const EntropyProviders* entropy_providers);
VariationsSafeSeedStoreLocalState(const VariationsSafeSeedStoreLocalState&) =
delete;
VariationsSafeSeedStoreLocalState& operator=(
const VariationsSafeSeedStoreLocalState&) = delete;
~VariationsSafeSeedStoreLocalState() override;
// VariationsSafeSeedStore:
base::Time GetFetchTime() const override;
void SetFetchTime(const base::Time& fetch_time) override;
int GetMilestone() const override;
base::Time GetTimeForStudyDateChecks() const override;
StoredSeed GetCompressedSeed() const override;
void SetCompressedSeed(ValidatedSeedInfo seed_info) override;
std::string GetLocale() const override;
void SetLocale(const std::string& locale) override;
std::string GetPermanentConsistencyCountry() const override;
void SetPermanentConsistencyCountry(
const std::string& permanent_consistency_country) override;
std::string GetSessionConsistencyCountry() const override;
void SetSessionConsistencyCountry(
const std::string& session_consistency_country) override;
SeedReaderWriter* GetSeedReaderWriterForTesting() override;
void SetSeedReaderWriterForTesting(
std::unique_ptr<SeedReaderWriter> seed_reader_writer) override;
void ClearState() override;
static void RegisterPrefs(PrefRegistrySimple* registry);
private:
// Local State accessor, which should be the same as the one in
// VariationsSeedStore.
raw_ptr<PrefService> local_state_;
// Handles reads and writes to seed files.
std::unique_ptr<SeedReaderWriter> seed_reader_writer_;
};
} // namespace variations
#endif // COMPONENTS_VARIATIONS_VARIATIONS_SAFE_SEED_STORE_LOCAL_STATE_H_
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