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// Copyright 2020 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_ASH_CHILD_ACCOUNTS_FAMILY_USER_METRICS_SERVICE_H_
#define CHROME_BROWSER_ASH_CHILD_ACCOUNTS_FAMILY_USER_METRICS_SERVICE_H_
#include <memory>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "base/timer/timer.h"
#include "components/keyed_service/core/keyed_service.h"
class PrefRegistrySimple;
class PrefService;
namespace content {
class BrowserContext;
} // namespace content
namespace ash {
// Service to initialize and control metric recorders of family users on Chrome
// OS.
class FamilyUserMetricsService : public KeyedService {
public:
// Interface for observing events on the FamilyUserMetricsService.
class Observer : public base::CheckedObserver {
public:
// Called when we detect a new day. This event can fire sooner or later than
// 24 hours due to clock or time zone changes.
virtual void OnNewDay() {}
};
static void RegisterProfilePrefs(PrefRegistrySimple* registry);
// Returns the day id for a given time for testing.
static int GetDayIdForTesting(base::Time time);
explicit FamilyUserMetricsService(content::BrowserContext* context);
FamilyUserMetricsService(const FamilyUserMetricsService&) = delete;
FamilyUserMetricsService& operator=(const FamilyUserMetricsService&) = delete;
~FamilyUserMetricsService() override;
// KeyedService:
void Shutdown() override;
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
private:
// Helper function to check if a new day has arrived.
void CheckForNewDay();
const raw_ptr<PrefService> pref_service_;
// A periodic timer that checks if a new day has arrived.
base::RepeatingTimer timer_;
// The |observers_| list is a superset of the |family_user_metrics_|.
base::ObserverList<Observer> observers_;
std::vector<std::unique_ptr<Observer>> family_user_metrics_;
};
} // namespace ash
#endif // CHROME_BROWSER_ASH_CHILD_ACCOUNTS_FAMILY_USER_METRICS_SERVICE_H_
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