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// Copyright 2024 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_AFFILIATIONS_CORE_BROWSER_AFFILIATION_PREFETCHER_H_
#define COMPONENTS_AFFILIATIONS_CORE_BROWSER_AFFILIATION_PREFETCHER_H_
#include <memory>
#include <vector>
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "components/affiliations/core/browser/affiliation_source.h"
namespace affiliations {
class AffiliationService;
class FacetURI;
// This class prefetches affiliation information on start-up for all registered
// affiliation sources.
class AffiliationPrefetcher : public AffiliationSource::Observer {
public:
explicit AffiliationPrefetcher(
affiliations::AffiliationService* affiliation_service);
~AffiliationPrefetcher() override;
// Registers an affiliation source.
void RegisterSource(std::unique_ptr<AffiliationSource> source);
private:
void OnResultFromSingleSourceReceived(std::vector<FacetURI> results);
// AffiliationSource::Observer:
void OnFacetsAdded(std::vector<FacetURI> facets) override;
void OnFacetsRemoved(std::vector<FacetURI> facets) override;
// Triggered once affiliation requests for all sources are returned. It
// collects all facets from all sources and triggers a single affiliations
// request via the `affiliation_service_`.
void OnResultFromAllSourcesReceived(
std::vector<std::vector<FacetURI>> facets);
// Initializes the prefetcher 30 seconds after start-up on two main steps:
// 1. Make a single affiliation request for all registered sources.
// 2. Starts observing all sources for any upcoming changes (e.g
// added/removed facets).
void Initialize();
// Indicates whether passwords were fetched for all sources in `sources_`.
bool is_ready_ = false;
const raw_ptr<affiliations::AffiliationService> affiliation_service_ =
nullptr;
// Allows to aggregate all `GetFacets` results from multiple sources.
base::RepeatingCallback<void(std::vector<FacetURI>)>
on_facets_received_barrier_callback_;
// Sources registered that aren't observed yet.
std::vector<std::unique_ptr<AffiliationSource>> pending_initializations_;
// List of affiliation sources owned and being observed by the prefetcher.
std::vector<std::unique_ptr<AffiliationSource>> initialized_sources_;
base::WeakPtrFactory<AffiliationPrefetcher> weak_ptr_factory_{this};
};
} // namespace affiliations
#endif // COMPONENTS_AFFILIATIONS_CORE_BROWSER_AFFILIATION_PREFETCHER_H_
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