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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_MULTIPLE_EVENT_MODEL_PROVIDER_H_
#define COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_MULTIPLE_EVENT_MODEL_PROVIDER_H_
#include "base/memory/weak_ptr.h"
#include "components/feature_engagement/internal/event_model_provider.h"
#include "components/feature_engagement/public/configuration.h"
namespace feature_engagement {
class EventModel;
class MultipleEventModelWriter;
class EventModelWriter;
class EventModelReader;
// A MultipleEventModelProvider provides the ability to use multiple event
// models.
class MultipleEventModelProvider : public EventModelProvider {
public:
explicit MultipleEventModelProvider(
std::unique_ptr<EventModel> profile_event_model,
std::unique_ptr<EventModel> device_event_model);
MultipleEventModelProvider(const MultipleEventModelProvider&) = delete;
MultipleEventModelProvider& operator=(const MultipleEventModelProvider&) =
delete;
~MultipleEventModelProvider() override;
// EventModelProvider implementation.
void Initialize(OnModelInitializationFinished callback,
uint32_t current_day) override;
bool IsReady() const override;
const EventModelReader* GetEventModelReaderForFeature(
const FeatureConfig& feature_config) const override;
EventModelWriter* GetEventModelWriter() override;
private:
// Callback for when an underlying event model has been initialized.
void OnInitializationComplete(bool success);
// Called when both underlying models have finished their initialization
// attempts. Invokes the main `initialization_callback_` with the overall
// success status.
void EventModelsInitializationCompleted();
// Barrier closure that is run when both models have initialized.
base::RepeatingClosure initialization_complete_barrier_;
// Callback to be invoked once overall initialization is complete.
OnModelInitializationFinished initialization_callback_;
// Tracks the overall success of the initialization process. True if both
// underlying models initialize successfully.
bool initialization_success_ = false;
// The profile event model.
std::unique_ptr<EventModel> profile_event_model_;
// The local event model.
std::unique_ptr<EventModel> device_event_model_;
// Event model writer that combines the profile and device event models.
std::unique_ptr<MultipleEventModelWriter> multiple_event_model_writer_;
base::WeakPtrFactory<MultipleEventModelProvider> weak_ptr_factory_{this};
};
} // namespace feature_engagement
#endif // COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_MULTIPLE_EVENT_MODEL_PROVIDER_H_
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