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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 CHROME_BROWSER_WEBAUTHN_MECHANISM_SORTER_H_
#define CHROME_BROWSER_WEBAUTHN_MECHANISM_SORTER_H_
#include <vector>
#include "chrome/browser/webauthn/authenticator_request_dialog_model.h"
// LINT.IfChange
//
// Represents the type of credential that was selected after deduplication.
// These values are persisted to logs. Entries should not be renumbered and
// numeric values should never be reused.
enum class WebAuthnMechanismDeduplicatedType {
kEnclavePasskey = 0,
kPlatformPasskey = 1,
kPassword = 2,
kOther = 3,
kMaxValue = kOther,
};
// LINT.ThenChange(//tools/metrics/histograms/metadata/webauthn/enums.xml)
// Class to handle deduplication and sorting of WebAuthn mechanisms,
// with specific logic for the kModalImmediate UI presentation.
class MechanismSorter {
public:
// Processes a list of mechanisms by deduplicating and sorting them.
// - Deduplication: For mechanisms with the same `mechanism.name`,
// selects the "best" one based on rules (e.g., recency).
// - Sorting: Orders the resulting mechanisms based on preference rules
// (e.g. recency, passkeys preferred, alphabetical).
//
// This logic is applied when ui_presentation is
// `UIPresentation::kModalImmediate`. For other presentations, it may apply a
// default behavior or pass through the mechanisms unmodified.
static std::vector<AuthenticatorRequestDialogModel::Mechanism>
ProcessMechanisms(
std::vector<AuthenticatorRequestDialogModel::Mechanism> mechanisms,
UIPresentation ui_presentation);
};
#endif // CHROME_BROWSER_WEBAUTHN_MECHANISM_SORTER_H_
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