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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 CHROME_BROWSER_NOTIFICATIONS_SCHEDULER_INTERNAL_IMPRESSION_STORE_H_
#define CHROME_BROWSER_NOTIFICATIONS_SCHEDULER_INTERNAL_IMPRESSION_STORE_H_
#include <memory>
#include <string>
#include <vector>
#include "base/functional/bind.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/notifications/proto/client_state.pb.h"
#include "chrome/browser/notifications/scheduler/internal/collection_store.h"
#include "chrome/browser/notifications/scheduler/internal/impression_types.h"
#include "components/leveldb_proto/public/proto_database.h"
// Forward declaration for proto conversion.
namespace leveldb_proto {
void DataToProto(notifications::ClientState* client_state,
notifications::proto::ClientState* proto);
void ProtoToData(notifications::proto::ClientState* proto,
notifications::ClientState* client_state);
} // namespace leveldb_proto
namespace notifications {
// An impression storage using a proto database to persist data.
class ImpressionStore : public CollectionStore<ClientState> {
public:
ImpressionStore(
std::unique_ptr<
leveldb_proto::ProtoDatabase<proto::ClientState, ClientState>> db);
ImpressionStore(const ImpressionStore&) = delete;
ImpressionStore& operator=(const ImpressionStore&) = delete;
~ImpressionStore() override;
private:
using KeyEntryVector = std::vector<std::pair<std::string, ClientState>>;
using KeyVector = std::vector<std::string>;
using EntryVector = std::vector<ClientState>;
// CollectionStore implementation.
void InitAndLoad(LoadCallback callback) override;
void Add(const std::string& key,
const ClientState& client_state,
UpdateCallback callback) override;
void Update(const std::string& key,
const ClientState& client_state,
UpdateCallback callback) override;
void Delete(const std::string& key, UpdateCallback callback) override;
// Called when the proto database is initialized but no yet loading the data
// into memory.
void OnDbInitialized(LoadCallback callback,
leveldb_proto::Enums::InitStatus status);
// Called after loading the data from database.
void OnDataLoaded(LoadCallback callback,
bool success,
std::unique_ptr<EntryVector> entry_vector);
std::unique_ptr<leveldb_proto::ProtoDatabase<proto::ClientState, ClientState>>
db_;
base::WeakPtrFactory<ImpressionStore> weak_ptr_factory_{this};
};
} // namespace notifications
#endif // CHROME_BROWSER_NOTIFICATIONS_SCHEDULER_INTERNAL_IMPRESSION_STORE_H_
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