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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_DISPLAY_DECIDER_H_
#define CHROME_BROWSER_NOTIFICATIONS_SCHEDULER_INTERNAL_DISPLAY_DECIDER_H_
#include <map>
#include <memory>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "chrome/browser/notifications/scheduler/public/notification_scheduler_types.h"
namespace base {
class Clock;
} // namespace base
namespace notifications {
struct ClientState;
struct NotificationEntry;
struct SchedulerConfig;
// This class uses scheduled notifications data and notification impression data
// of each notification type to find a list of notification that should be
// displayed to the user.
// All operations should be done on the main thread.
class DisplayDecider {
public:
using Notifications = std::map<
SchedulerClientType,
std::vector<raw_ptr<const NotificationEntry, VectorExperimental>>>;
using ClientStates = std::map<SchedulerClientType, const ClientState*>;
using Results = std::set<std::string>;
// Creates the decider to determine notifications to show.
static std::unique_ptr<DisplayDecider> Create(
const SchedulerConfig* config,
std::vector<SchedulerClientType> clients,
base::Clock* clock);
DisplayDecider() = default;
DisplayDecider(const DisplayDecider&) = delete;
DisplayDecider& operator=(const DisplayDecider&) = delete;
virtual ~DisplayDecider() = default;
// Finds notifications to show. Returns a list of notification guids.
virtual void FindNotificationsToShow(
Notifications notifications,
ClientStates client_states,
Results* results) = 0;
};
} // namespace notifications
#endif // CHROME_BROWSER_NOTIFICATIONS_SCHEDULER_INTERNAL_DISPLAY_DECIDER_H_
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