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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_SEARCH_ENGINES_TEMPLATE_URL_PREPOPULATE_DATA_RESOLVER_H_
#define COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_PREPOPULATE_DATA_RESOLVER_H_
#include <optional>
#include <vector>
#include "base/memory/raw_ref.h"
#include "components/keyed_service/core/keyed_service.h"
#include "components/regional_capabilities/regional_capabilities_country_id.h"
#include "components/search_engines/keyword_web_data_service.h"
struct TemplateURLData;
class PrefService;
namespace regional_capabilities {
class RegionalCapabilitiesService;
}
namespace TemplateURLPrepopulateData {
// Provides context on TemplateURLPrepopulateData's data set.
struct BuiltinKeywordsMetadata {
// Country for which we are selecting the built-in prepopulate data.
regional_capabilities::CountryIdHolder country_id;
// Version of the built-in prepopulated keywords data.
int data_version;
};
// Resolves prepopulated engines using on various information from the browser
// context, like country, state of some prefs, etc.
// Use this service instead directly calling functions from
// `TemplateURLPrepopulateData`.
class Resolver : public KeyedService {
public:
Resolver(PrefService& prefs,
regional_capabilities::RegionalCapabilitiesService&
regional_capabilities);
// Returns the prepopulated URLs for the profile country.
std::vector<std::unique_ptr<TemplateURLData>> GetPrepopulatedEngines() const;
// Returns the prepopulated search engine with the given `prepopulated_id`
// from the profile country's known prepopulated search engines, or `nullptr`
// if it's not known there.
std::unique_ptr<TemplateURLData> GetPrepopulatedEngine(
int prepopulated_id) const;
// Returns the prepopulated search engine with the given `prepopulated_id`
// from the full list of known prepopulated search engines, or `nullptr` if
// it's not known there.
std::unique_ptr<TemplateURLData> GetEngineFromFullList(
int prepopulated_id) const;
// Returns the fallback default search provider, currently hardcoded to be
// Google, or whichever one is the first of the list if Google is not in the
// list of prepopulated search engines.
// May return `nullptr` if for some reason there are no prepopulated search
// engines available.
std::unique_ptr<TemplateURLData> GetFallbackSearch() const;
// Computes whether updates relative to prepopulated search engines need to be
// made in the local search engines database.
//
// Returns `std::nullopt` when no updates are needed, or a `Metadata`
// providing country and data version info about the data to be merged in.
std::optional<BuiltinKeywordsMetadata> ComputeDatabaseUpdateRequirements(
const WDKeywordsResult::Metadata& keywords_database_metadata) const;
private:
raw_ref<PrefService> profile_prefs_;
raw_ref<regional_capabilities::RegionalCapabilitiesService>
regional_capabilities_;
};
} // namespace TemplateURLPrepopulateData
#endif // COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_PREPOPULATE_DATA_RESOLVER_H_
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