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// Copyright 2014 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_VARIATIONS_STUDY_FILTERING_H_
#define COMPONENTS_VARIATIONS_STUDY_FILTERING_H_
#include <string>
#include <vector>
#include "base/compiler_specific.h"
#include "base/component_export.h"
#include "base/time/time.h"
#include "base/version.h"
#include "components/variations/client_filterable_state.h"
#include "components/variations/processed_study.h"
#include "components/variations/proto/study.pb.h"
#include "components/variations/proto/variations_seed.pb.h"
#include "components/variations/variations_layers.h"
namespace variations {
struct ClientFilterableState;
// Internal functions exposed for testing purposes only.
namespace internal {
// Checks whether a study is applicable for the given |channel| per |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyChannel(const Study::Filter& filter, Study::Channel channel);
// Checks whether a study is applicable for the given |form_factor| per
// |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyFormFactor(const Study::Filter& filter,
Study::FormFactor form_factor);
// Checks whether a study is applicable for the given |hardware_class| per
// |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyHardwareClass(const Study::Filter& filter,
const std::string& hardware_class);
// Checks whether a study is applicable for the given |locale| per |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyLocale(const Study::Filter& filter, const std::string& locale);
// Checks whether a study is applicable for the given |country| per |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyCountry(const Study::Filter& filter, const std::string& country);
// Checks whether a study is applicable for the given |platform| per |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyPlatform(const Study::Filter& filter, Study::Platform platform);
// Checks whether a study is applicable given |is_low_end_device| per |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyLowEndDevice(const Study::Filter& filter,
bool is_low_end_device);
// Checks whether a study is applicable given the ChromeVariations policy value.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyPolicyRestriction(const Study::Filter& filter,
RestrictionPolicy policy_restriction);
// Checks whether a study is applicable for the given date/time per |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyStartDate(const Study::Filter& filter,
const base::Time& date_time);
// Checks whether a study is applicable for the given date/time per |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyEndDate(const Study::Filter& filter,
const base::Time& date_time);
// Checks whether a study is applicable for the given version per |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyVersion(const Study::Filter& filter,
const base::Version& version);
// Checks whether a study is applicable for the given OS version per |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyOSVersion(const Study::Filter& filter,
const base::Version& os_version);
// Checks whether a study is applicable given |is_enterprise| per |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyEnterprise(const Study::Filter& filter,
const ClientFilterableState& client_state);
// Checks whether a study is applicable for the given Google group memberships
// per |filter|.
COMPONENT_EXPORT(VARIATIONS)
bool CheckStudyGoogleGroup(const Study::Filter& filter,
const ClientFilterableState& client_state);
// Returns the country that should be used for filtering this study, depending
// on whether the study has session or permanent consistency.
COMPONENT_EXPORT(VARIATIONS)
const std::string& GetClientCountryForStudy(
const Study& study,
const ClientFilterableState& client_state);
// Checks whether |study| is expired using the given date/time.
COMPONENT_EXPORT(VARIATIONS)
bool IsStudyExpired(const Study& study, const base::Time& date_time);
// Returns whether |study| should be disabled according to the restriction
// parameters in the |config|.
COMPONENT_EXPORT(VARIATIONS)
bool ShouldAddStudy(const ProcessedStudy& processed_study,
const ClientFilterableState& client_state,
const VariationsLayers& layers);
} // namespace internal
// Validates and preprocesses studies in |seed|, filters them according to
// the |client_state| and |layers|, and ensures the result has at most one
// study with the same name.
COMPONENT_EXPORT(VARIATIONS)
std::vector<ProcessedStudy> FilterAndValidateStudies(
const VariationsSeed& seed,
const ClientFilterableState& client_state,
const VariationsLayers& layers);
} // namespace variations
#endif // COMPONENTS_VARIATIONS_STUDY_FILTERING_H_
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