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// Copyright 2021 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_FEED_CORE_V2_FEEDSTORE_UTIL_H_
#define COMPONENTS_FEED_CORE_V2_FEEDSTORE_UTIL_H_
#include <optional>
#include <string>
#include <string_view>
#include "base/containers/flat_set.h"
#include "base/time/time.h"
#include "components/feed/core/proto/v2/store.pb.h"
#include "components/feed/core/v2/public/stream_type.h"
#include "components/feed/core/v2/types.h"
namespace feedwire {
class ConsistencyToken;
}
namespace feedstore {
class Metadata;
const char kForYouStreamKey[] = "i";
const char kFollowStreamKey[] = "w";
constexpr std::string_view kSingleWebFeedStreamKeyPrefix = "c";
constexpr std::string_view kSingleWebFeedMenuStreamKeyPrefix = "m/";
constexpr std::string_view kSingleWebFeedOtherStreamKeyPrefix = "o/";
std::string StreamKey(const feed::StreamType& stream_type);
feed::StreamType StreamTypeFromKey(std::string_view key);
std::string_view StreamPrefix(feed::StreamKind stream_type);
///////////////////////////////////////////////////
// Functions that operate on feedstore proto types.
int64_t ToTimestampMillis(base::Time t);
base::Time FromTimestampMillis(int64_t millis);
int64_t ToTimestampNanos(base::Time t);
base::Time FromTimestampMicros(int64_t millis);
void SetLastAddedTime(base::Time t, feedstore::StreamData& data);
void SetLastServerResponseTime(Metadata& metadata,
const feed::StreamType& stream_type,
const base::Time& server_time);
base::Time GetLastAddedTime(const feedstore::StreamData& data);
base::Time GetSessionIdExpiryTime(const feedstore::Metadata& metadata);
base::Time GetStreamViewTime(const Metadata& metadata,
const feed::StreamType& stream_type);
bool IsKnownStale(const Metadata& metadata,
const feed::StreamType& stream_type);
base::Time GetLastFetchTime(const Metadata& metadata,
const feed::StreamType& stream_type);
void SetLastFetchTime(Metadata& metadata,
const feed::StreamType& stream_type,
const base::Time& fetch_time);
feedstore::Metadata MakeMetadata(const std::string& gaia);
feedstore::DocView CreateDocView(uint64_t docid,
base::Time timestamp = base::Time::Now());
// Mutations of Metadata. Metadata will need stored again after being changed,
// call `FeedStream::SetMetadata()`.
void SetSessionId(feedstore::Metadata& metadata,
std::string token,
base::Time expiry_time);
void SetContentLifetime(
feedstore::Metadata& metadata,
const feed::StreamType& stream_type,
feedstore::Metadata::StreamMetadata::ContentLifetime content_lifetime);
void MaybeUpdateSessionId(feedstore::Metadata& metadata,
std::optional<std::string> token);
std::optional<Metadata> MaybeUpdateConsistencyToken(
const feedstore::Metadata& metadata,
const feedwire::ConsistencyToken& token);
feed::LocalActionId GetNextActionId(feedstore::Metadata& metadata);
const Metadata::StreamMetadata* FindMetadataForStream(
const Metadata& metadata,
const feed::StreamType& stream_type);
Metadata::StreamMetadata& MetadataForStream(
Metadata& metadata,
const feed::StreamType& stream_type);
std::optional<Metadata> SetStreamViewContentHashes(
const Metadata& metadata,
const feed::StreamType& stream_type,
const feed::ContentHashSet& content_hashes);
feed::ContentHashSet GetContentIds(const StreamData& stream_data);
feed::ContentHashSet GetViewContentIds(const Metadata& metadata,
const feed::StreamType& stream_type);
int32_t ContentHashFromPrefetchMetadata(
const feedwire::PrefetchMetadata& prefetch_metadata);
base::flat_set<uint32_t> GetViewedContentHashes(
const Metadata& metadata,
const feed::StreamType& stream_type);
} // namespace feedstore
#endif // COMPONENTS_FEED_CORE_V2_FEEDSTORE_UTIL_H_
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