libsignal/swift/Sources/LibSignalClient/zkgroup/BackupAuthCredentialRequest.swift

//
// Copyright 2023 Signal Messenger, LLC.
// SPDX-License-Identifier: AGPL-3.0-only
//

import Foundation
import SignalFfi

public class BackupAuthCredentialRequest: ByteArray, @unchecked Sendable {
    public required init(contents: Data) throws {
        try super.init(contents, checkValid: signal_backup_auth_credential_request_check_valid_contents)
    }

    public func issueCredential(
        timestamp: Date,
        backupLevel: BackupLevel,
        type: BackupCredentialType,
        params: GenericServerSecretParams
    ) -> BackupAuthCredentialResponse {
        return failOnError {
            self.issueCredential(
                timestamp: timestamp,
                backupLevel: backupLevel,
                type: type,
                params: params,
                randomness: try .generate()
            )
        }
    }

    public func issueCredential(
        timestamp: Date,
        backupLevel: BackupLevel,
        type: BackupCredentialType,
        params: GenericServerSecretParams,
        randomness: Randomness
    ) -> BackupAuthCredentialResponse {
        return failOnError {
            try withAllBorrowed(self, params, randomness) { contents, params, randomness in
                try invokeFnReturningVariableLengthSerialized {
                    signal_backup_auth_credential_request_issue_deterministic(
                        $0,
                        contents,
                        UInt64(timestamp.timeIntervalSince1970),
                        backupLevel.rawValue,
                        type.rawValue,
                        params,
                        randomness
                    )
                }
            }
        }
    }
}