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// Copyright 2023 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_CHROMEOS_REPORTING_WEBSITES_WEBSITE_METRICS_RETRIEVER_ASH_H_
#define CHROME_BROWSER_CHROMEOS_REPORTING_WEBSITES_WEBSITE_METRICS_RETRIEVER_ASH_H_
#include "base/callback_list.h"
#include "base/functional/callback_forward.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_observation.h"
#include "base/sequence_checker.h"
#include "chrome/browser/apps/app_service/metrics/app_platform_metrics_service.h"
#include "chrome/browser/apps/app_service/metrics/website_metrics.h"
#include "chrome/browser/chromeos/reporting/websites/website_metrics_retriever_interface.h"
#include "chrome/browser/profiles/profile.h"
namespace reporting {
// Retriever implementation that retrieves the `WebsiteMetrics` component in
// Ash. If the component is not initialized, it will observe component
// initialization and return the initialized component when complete.
class WebsiteMetricsRetrieverAsh
: public WebsiteMetricsRetrieverInterface,
public ::apps::AppPlatformMetricsService::Observer {
public:
explicit WebsiteMetricsRetrieverAsh(base::WeakPtr<Profile> profile);
WebsiteMetricsRetrieverAsh(const WebsiteMetricsRetrieverAsh&) = delete;
WebsiteMetricsRetrieverAsh& operator=(const WebsiteMetricsRetrieverAsh&) =
delete;
~WebsiteMetricsRetrieverAsh() override;
// WebsiteMetricsRetrieverInterface:
void GetWebsiteMetrics(WebsiteMetricsCallback callback) override;
// Returns true if the retriever is observing the specified source for
// initialization of the `WebsiteMetrics` component. Only needed for testing
// purposes.
bool IsObservingSourceForTest(
::apps::AppPlatformMetricsService* app_platform_metrics_service);
private:
// AppPlatformMetricsService::Observer:
void OnWebsiteMetricsInit(::apps::WebsiteMetrics* website_metrics) override;
// AppPlatformMetricsService::Observer:
void OnAppPlatformMetricsServiceWillBeDestroyed() override;
SEQUENCE_CHECKER(sequence_checker_);
const base::WeakPtr<Profile> profile_;
// Observer that tracks initialization of the `WebsiteMetrics` component.
base::ScopedObservation<::apps::AppPlatformMetricsService,
::apps::AppPlatformMetricsService::Observer>
init_observer_ GUARDED_BY_CONTEXT(sequence_checker_){this};
// List of registered callbacks that need to be triggered once the
// `WebsiteMetrics` component is initialized.
base::OnceCallbackList<void(::apps::WebsiteMetrics*)> callback_list_
GUARDED_BY_CONTEXT(sequence_checker_);
};
} // namespace reporting
#endif // CHROME_BROWSER_CHROMEOS_REPORTING_WEBSITES_WEBSITE_METRICS_RETRIEVER_ASH_H_
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