libsignal/swift/Sources/LibSignalClient/zkgroup/CallLinkAuthCredentialResponse.swift

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

import Foundation
import SignalFfi

public class CallLinkAuthCredentialResponse: ByteArray {
  public required init(contents: [UInt8]) throws {
    try super.init(contents, checkValid: signal_call_link_auth_credential_response_check_valid_contents)
  }

  public static func issueCredential(userId: Aci, redemptionTime: Date, params: GenericServerSecretParams) -> CallLinkAuthCredentialResponse {
    return failOnError {
      issueCredential(userId: userId, redemptionTime: redemptionTime, params: params, randomness: try .generate())
    }
  }

  public static func issueCredential(userId: Aci, redemptionTime: Date, params: GenericServerSecretParams, randomness: Randomness) -> CallLinkAuthCredentialResponse {
    return failOnError {
      try userId.withPointerToFixedWidthBinary { userId in
        try params.withUnsafeBorrowedBuffer { params in
          try randomness.withUnsafePointerToBytes { randomness in
            try invokeFnReturningVariableLengthSerialized {
              signal_call_link_auth_credential_response_issue_deterministic($0, userId, UInt64(redemptionTime.timeIntervalSince1970), params, randomness)
            }
          }
        }
      }
    }
  }

  public func receive(userId: Aci, redemptionTime: Date, params: GenericServerPublicParams) throws -> CallLinkAuthCredential {
    return try withUnsafeBorrowedBuffer { contents in
      try userId.withPointerToFixedWidthBinary { userId in
        try params.withUnsafeBorrowedBuffer { params in
          try invokeFnReturningVariableLengthSerialized {
            signal_call_link_auth_credential_response_receive($0, contents, userId, UInt64(redemptionTime.timeIntervalSince1970), params)
          }
        }
      }
    }
  }
}