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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 COMPONENTS_ATTRIBUTION_REPORTING_TRIGGER_CONFIG_H_
#define COMPONENTS_ATTRIBUTION_REPORTING_TRIGGER_CONFIG_H_
#include <stdint.h>
#include "base/component_export.h"
#include "base/containers/flat_set.h"
#include "base/types/expected.h"
#include "components/attribution_reporting/source_registration_error.mojom-forward.h"
#include "components/attribution_reporting/source_type.mojom-forward.h"
#include "components/attribution_reporting/trigger_data_matching.mojom-forward.h"
namespace base {
class DictValue;
} // namespace base
namespace attribution_reporting {
class COMPONENT_EXPORT(ATTRIBUTION_REPORTING) TriggerDataSet {
public:
using TriggerData = base::flat_set<uint32_t>;
static base::expected<TriggerDataSet, mojom::SourceRegistrationError>
Parse(const base::DictValue&, mojom::SourceType, mojom::TriggerDataMatching);
static std::optional<TriggerDataSet> Create(TriggerData);
// Creates an empty set matching no trigger data.
TriggerDataSet();
// Creates a set with the default trigger data cardinality for the given
// source type.
explicit TriggerDataSet(mojom::SourceType);
~TriggerDataSet();
TriggerDataSet(const TriggerDataSet&);
TriggerDataSet& operator=(const TriggerDataSet&);
TriggerDataSet(TriggerDataSet&&);
TriggerDataSet& operator=(TriggerDataSet&&);
base::DictValue ToJson() const;
void Serialize(base::DictValue&) const;
// Returns the matching trigger data, if any.
//
// Accepts a 64-bit integer instead of a 32-bit one for backward
// compatibility with pre-Flex triggers that supply the full range.
//
// Note: `TriggerDataMatching::kModulus` can still be applied
// even if the trigger data does not form a contiguous range starting at 0.
// Such a combination is prohibited by `TriggerDataSet::Parse()`, but there is
// still a well-defined meaning for it for arbitrary trigger data, so we do
// not bother preventing it here, though we may do so in the future.
std::optional<uint32_t> find(uint64_t trigger_data,
mojom::TriggerDataMatching) const;
const TriggerData& trigger_data() const { return trigger_data_; }
friend bool operator==(const TriggerDataSet&,
const TriggerDataSet&) = default;
private:
explicit TriggerDataSet(TriggerData);
TriggerData trigger_data_;
};
COMPONENT_EXPORT(ATTRIBUTION_REPORTING)
base::expected<mojom::TriggerDataMatching, mojom::SourceRegistrationError>
ParseTriggerDataMatching(const base::DictValue&);
COMPONENT_EXPORT(ATTRIBUTION_REPORTING)
void Serialize(base::DictValue&, mojom::TriggerDataMatching);
} // namespace attribution_reporting
#endif // COMPONENTS_ATTRIBUTION_REPORTING_TRIGGER_CONFIG_H_
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