private void SetSecretPhrase(NxtAccount account)
{
var localPasswordGenerator = new LocalPasswordGenerator();
var secretPhrase = localPasswordGenerator.GenerateDetermenisticPassword(MasterKey, account.Id, 256);
account.SecretPhrase = secretPhrase;
}
public async Task BackupAccount(NxtAccount account)
{
var decryptedAccountData = JsonConvert.SerializeObject(account);
var encryptedMessage = nxtConnector.Encrypt(decryptedAccountData, MainAccount, secretPhrase);
var encryptedJson = JsonConvert.SerializeObject(encryptedMessage);
await nxtConnector.UploadTaggedData(encryptedJson, tagName, tags, "slack tipbot data storage", secretPhrase);
}
private void SetAccountRs(NxtAccount account)
{
var accountWithPublicKey = GetAccountFromSecretPhrase(account.SecretPhrase);
account.NxtPublicKey = accountWithPublicKey.PublicKey.ToHexString();
account.NxtAccountRs = accountWithPublicKey.AccountRs;
}
public async Task UpdateAccount(NxtAccount account)
{
using (var context = new WalletContext())
{
context.NxtAccounts.Attach(account);
context.Entry(account).State = EntityState.Modified;
await context.SaveChangesAsync();
}
}
private async Task <NxtAccount> CreateNxtAccount(string slackUserId)
{
NxtAccount account = new NxtAccount {
SlackId = slackUserId
};
await walletRepository.AddAccount(account);
nxtConnector.SetNxtProperties(account);
await walletRepository.UpdateAccount(account);
return(account);
}
public void SetNxtProperties(NxtAccount account)
{
if (string.IsNullOrEmpty(account.SecretPhrase))
{
SetSecretPhrase(account);
SetAccountRs(account);
}
else if (string.IsNullOrEmpty(account.NxtAccountRs))
{
SetAccountRs(account);
}
}
public async Task <NxtAccount> AddAccount(NxtAccount account)
{
using (var context = new WalletContext())
{
context.NxtAccounts.Add(account);
await context.SaveChangesAsync();
if (doBlockchainBackup)
{
await blockchainStore.BackupAccount(account);
}
return(account);
}
}
public async Task <ulong> Transfer(NxtAccount senderAccount, string addressRs, NxtTransferable transferable, decimal amount, string message, string recipientPublicKey = "")
{
SetNxtProperties(senderAccount);
var parameters = new CreateTransactionBySecretPhrase(true, 1440, Amount.OneNxt, senderAccount.SecretPhrase);
parameters.RecipientPublicKey = recipientPublicKey;
parameters.Message = new CreateTransactionParameters.UnencryptedMessage(message, true);
var quantity = (long)(amount * (long)Math.Pow(10, transferable.Decimals));
switch (transferable.Type)
{
case NxtTransferableType.Nxt: return(await SendMoney(parameters, addressRs, quantity));
case NxtTransferableType.Asset: return(await TransferAsset(addressRs, transferable.Id, quantity, parameters));
case NxtTransferableType.Currency: return(await TransferCurrency(addressRs, transferable.Id, quantity, parameters));
default: throw new ArgumentException($"Unsupported NxtTransferableType: {transferable.Type}", nameof(transferable));
}
}
private async Task SendTransferableRecipientMessage(SlackUser slackUser, string recipientUserId, NxtTransferable transferable, NxtAccount recipientAccount, decimal amount)
{
if (transferable.HasRecipientMessage())
{
var balance = await nxtConnector.GetBalance(transferable, recipientAccount.NxtAccountRs);
if (balance == 0)
{
var imId = await SlackConnector.GetInstantMessageId(recipientUserId);
var message = transferable.RecipientMessage.Replace("{amount}", $"{amount}").Replace("{sender}", $"<@{slackUser.Id}>");
await SlackConnector.SendMessage(imId, message);
}
}
}
private async Task SendTransferableSenderMessage(SlackUser slackUser, string recipient, NxtTransferable transferable, NxtAccount recipientAccount)
{
if (transferable != Nxt.Singleton)
{
var balance = await nxtConnector.GetBalance(Nxt.Singleton, recipientAccount.NxtAccountRs);
if (balance < 1)
{
var imId = await SlackConnector.GetInstantMessageId(slackUser.Id);
var message = MessageConstants.RecipientDoesNotHaveAnyNxtHint(recipientAccount.SlackId, transferable.Name);
await SlackConnector.SendMessage(imId, message);
}
}
}
private async Task Tip(SlackUser slackUser, SlackChannelSession channelSession, string recipient, List <string> slackUserIds, decimal amountToTip,
string unit, string comment, NxtTransferable transferable, NxtAccount account)
{
var isRecipientSlackUser = slackUserIds.Any();
var recipientCount = isRecipientSlackUser ? slackUserIds.Count : 1;
if (slackUserIds.Contains(SlackConnector.SelfId))
{
await SlackConnector.SendMessage(channelSession.Id, MessageConstants.CantTipBotChannel);
return;
}
if (slackUserIds.Contains(slackUser.Id))
{
await SlackConnector.SendMessage(channelSession.Id, MessageConstants.CantTipYourselfChannel);
return;
}
if (!isRecipientSlackUser && !nxtConnector.IsValidAddressRs(recipient))
{
await SlackConnector.SendMessage(channelSession.Id, MessageConstants.InvalidAddress);
return;
}
if (account == null)
{
await SlackConnector.SendMessage(channelSession.Id, MessageConstants.NoAccountChannel);
return;
}
if (!string.IsNullOrEmpty(comment) && comment.Length > 512)
{
await SlackConnector.SendMessage(channelSession.Id, MessageConstants.CommentTooLongChannel);
return;
}
if (!(await VerifyParameters(transferable, unit, account, channelSession.Id, amountToTip, recipientCount)))
{
return;
}
if (isRecipientSlackUser)
{
foreach (var slackUserId in slackUserIds)
{
var recipientAccount = await walletRepository.GetAccount(slackUserId);
var recipientPublicKey = "";
if (recipientAccount == null)
{
recipientAccount = await SendTipRecievedInstantMessage(slackUser, slackUserId);
recipientPublicKey = recipientAccount.NxtPublicKey;
}
try
{
var recipientUserName = SlackConnector.GetUser(slackUserId).Name;
var txMessage = MessageConstants.NxtTipTransactionMessage(slackUser.Name, recipientUserName, comment);
var txId = await nxtConnector.Transfer(account, recipientAccount.NxtAccountRs, transferable, amountToTip, txMessage, recipientPublicKey);
if (recipientCount == 1)
{
var reply = MessageConstants.TipSentChannel(slackUser.Id, slackUserId, amountToTip, transferable.Name, txId, comment);
await SlackConnector.SendMessage(channelSession.Id, reply, false);
}
else
{
var imId = await SlackConnector.GetInstantMessageId(slackUserId);
var reply = MessageConstants.TipSentDirectMessage(slackUser.Id, amountToTip, transferable.Name, txId);
await SlackConnector.SendMessage(imId, reply);
}
await SendTransferableRecipientMessage(slackUser, slackUserId, transferable, recipientAccount, amountToTip);
await SendTransferableSenderMessage(slackUser, slackUserId, transferable, recipientAccount);
}
catch (NxtException e)
{
logger.LogError(0, e, e.Message);
throw;
}
}
if (recipientCount > 1)
{
var reply = MessageConstants.MultitipSentChannel(slackUser.Id, recipient, amountToTip, transferable.Name, comment);
await SlackConnector.SendMessage(channelSession.Id, reply);
}
}
else
{
try
{
var txMessage = MessageConstants.NxtTipTransactionMessage(slackUser.Name, "", comment);
var txId = await nxtConnector.Transfer(account, recipient, transferable, amountToTip, txMessage, "");
var reply = MessageConstants.TipToAddressRsSentChannel(slackUser.Id, recipient, amountToTip, transferable.Name, txId, comment);
await SlackConnector.SendMessage(channelSession.Id, reply, false);
}
catch (NxtException e)
{
logger.LogError(0, e, e.Message);
throw;
}
}
}
private async Task <bool> VerifyParameters(NxtTransferable transferable, string unit, NxtAccount account, string slackSessionId, decimal amount, int recipientCount = 1)
{
if (transferable == null)
{
await SlackConnector.SendMessage(slackSessionId, MessageConstants.UnknownUnit(unit));
return(false);
}
amount *= recipientCount;
var nxtBalance = await nxtConnector.GetBalance(Nxt.Singleton, account.NxtAccountRs);
if (transferable == Nxt.Singleton)
{
if (nxtBalance >= amount && nxtBalance < amount + 1 && recipientCount == 1)
{
await SlackConnector.SendMessage(slackSessionId, MessageConstants.NotEnoughFundsNeedFee(nxtBalance));
return(false);
}
if (nxtBalance < amount + recipientCount)
{
await SlackConnector.SendMessage(slackSessionId, MessageConstants.NotEnoughFunds(nxtBalance, transferable.Name));
return(false);
}
}
else
{
if (nxtBalance < recipientCount)
{
await SlackConnector.SendMessage(slackSessionId, MessageConstants.NotEnoughFundsNeedFee(nxtBalance, recipientCount));
return(false);
}
var balance = await nxtConnector.GetBalance(transferable, account.NxtAccountRs);
if (balance < amount)
{
await SlackConnector.SendMessage(slackSessionId, MessageConstants.NotEnoughFunds(balance, transferable.Name));
return(false);
}
}
return(true);
}
private void SetupNxtAccount(NxtAccount nxtAccount, decimal balance)
{
walletRepositoryMock.Setup(r => r.GetAccount(It.Is <string>(slackId => slackId == nxtAccount.SlackId))).ReturnsAsync(nxtAccount);
nxtConnectorMock.Setup(c => c.GetBalance(It.Is <NxtTransferable>(t => t == Nxt.Singleton), It.Is <string>(rs => rs == nxtAccount.NxtAccountRs))).ReturnsAsync(balance);
SetupTransferable(Nxt.Singleton, balance, nxtAccount.NxtAccountRs);
}