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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 ASH_ASSISTANT_ASSISTANT_NOTIFICATION_EXPIRY_MONITOR_H_
#define ASH_ASSISTANT_ASSISTANT_NOTIFICATION_EXPIRY_MONITOR_H_
#include <memory>
#include <optional>
#include <string>
#include <vector>
#include "ash/assistant/model/assistant_notification_model_observer.h"
#include "base/memory/raw_ptr.h"
#include "base/timer/timer.h"
namespace ash {
class AssistantNotificationControllerImpl;
// Will track all Assistant notifications by subscribing to the given
// |controller| and will call
// |AssistantNotificationController::RemoveNotificationById| when the
// notification expires (i.e. when the current time passes the value in the
// expiry_time| field).
class AssistantNotificationExpiryMonitor {
public:
using AssistantNotification = assistant::AssistantNotification;
explicit AssistantNotificationExpiryMonitor(
AssistantNotificationControllerImpl* controller);
AssistantNotificationExpiryMonitor(
const AssistantNotificationExpiryMonitor&) = delete;
AssistantNotificationExpiryMonitor& operator=(
const AssistantNotificationExpiryMonitor&) = delete;
~AssistantNotificationExpiryMonitor();
private:
using NotificationId = std::string;
class Observer;
// Start/stop the timer waiting for the next expiry time.
// If the timer is already running this will start a new timer with the
// (new) expiry time that will expire first.
void UpdateTimer();
std::optional<base::TimeDelta> GetTimerTimeout() const;
std::optional<base::Time> GetTimerEndTime() const;
void RemoveExpiredNotifications();
std::vector<NotificationId> GetExpiredNotifications() const;
std::vector<const AssistantNotification*> GetNotifications() const;
base::OneShotTimer timer_;
const raw_ptr<AssistantNotificationControllerImpl> controller_;
std::unique_ptr<Observer> observer_;
};
} // namespace ash
#endif // ASH_ASSISTANT_ASSISTANT_NOTIFICATION_EXPIRY_MONITOR_H_
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