/// <summary>
/// Creates CAN IPNS record object to point to a CAN object of the given hash with the given sequence number.
/// </summary>
/// <param name="Hash">Hash of the CAN object to point IPNS record to.</param>
/// <param name="SequenceNumber">Sequence number of the IPNS record.</param>
/// <param name="ExpirationTimeSeconds">Expiration time of the newly created record in seconds.</param>
/// <returns>Valid signed CAN IPNS record object, ready to be sent to CAN server.</returns>
public static CanIpnsEntry CreateIpnsRecord(byte[] Hash, UInt64 SequenceNumber, int ExpirationTimeSeconds)
{
log.Trace("(Hash:'{0}',SequenceNumber:{1},ExpirationTimeSeconds:{2})", Hash.ToBase58(), SequenceNumber, ExpirationTimeSeconds);
string validityString = DateTime.UtcNow.AddMonths(1).ToString(Rfc3339DateTimeFormat, DateTimeFormatInfo.InvariantInfo);
byte[] validityBytes = Encoding.UTF8.GetBytes(validityString);
UInt64 ttlNanoSec = (UInt64)(TimeSpan.FromSeconds(ExpirationTimeSeconds).TotalMilliseconds) * (UInt64)1000000;
string valueString = CanApi.CreateIpfsPathFromHash(Hash);
byte[] valueBytes = Encoding.UTF8.GetBytes(valueString);
CanIpnsEntry res = new CanIpnsEntry()
{
Sequence = SequenceNumber,
ValidityType = CanIpnsEntry.Types.ValidityType.Eol,
Ttl = ttlNanoSec,
Validity = ProtocolHelper.ByteArrayToByteString(validityBytes),
Value = ProtocolHelper.ByteArrayToByteString(valueBytes)
};
res.Signature = ProtocolHelper.ByteArrayToByteString(CreateIpnsRecordSignature(res));
log.Trace("(-):{0}", res);
return(res);
}
/// <summary>
/// Deletes CAN object from CAN server.
/// </summary>
/// <param name="ObjectHash">CAN object hash.</param>
/// <returns>Structure describing whether the function succeeded and response provided by CAN server.</returns>
public async Task <CanDeleteResult> CanDeleteObjectByHash(byte[] ObjectHash)
{
string objectPath = CanApi.CreateIpfsPathFromHash(ObjectHash);
return(await CanDeleteObject(objectPath));
}
