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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_DOWNLOAD_INTERNAL_STORE_H_
#define COMPONENTS_DOWNLOAD_INTERNAL_STORE_H_
#include <memory>
#include <string>
#include <vector>
#include "base/callback_forward.h"
namespace download {
struct Entry;
// A backing storage interface responsible for persisting Entry objects.
class Store {
public:
using InitCallback =
base::OnceCallback<void(bool success,
std::unique_ptr<std::vector<Entry>> entries)>;
using StoreCallback = base::OnceCallback<void(bool success)>;
virtual ~Store() = default;
// Returns whether or not this Store is initialized and can be interracted
// with.
virtual bool IsInitialized() = 0;
// Initializes this Store and asynchronously returns whether or not that
// initialization was successful as well as a list of Entry objects from the
// Store.
virtual void Initialize(InitCallback callback) = 0;
// Destroys the underlying store and attempts to re-initialize.
virtual void HardRecover(StoreCallback callback) = 0;
// Adds or updates |entry| in this Store asynchronously and returns whether or
// not that was successful.
virtual void Update(const Entry& entry, StoreCallback callback) = 0;
// Removes the Entry associated with |guid| from this Store asynchronously and
// returns whether or not that was successful.
virtual void Remove(const std::string& guid, StoreCallback callback) = 0;
};
} // namespace download
#endif // COMPONENTS_DOWNLOAD_INTERNAL_STORE_H_