public async Task <IActionResult> AddDerivationScheme(string storeId, [FromForm] DerivationSchemeViewModel vm,
string cryptoCode)
{
vm.CryptoCode = cryptoCode;
var store = HttpContext.GetStoreData();
if (store == null)
{
return(NotFound());
}
var network = cryptoCode == null ? null : _ExplorerProvider.GetNetwork(cryptoCode);
if (network == null)
{
return(NotFound());
}
vm.Network = network;
vm.RootKeyPath = network.GetRootKeyPath();
DerivationSchemeSettings strategy = null;
var wallet = _WalletProvider.GetWallet(network);
if (wallet == null)
{
return(NotFound());
}
if (!string.IsNullOrEmpty(vm.Config))
{
if (!DerivationSchemeSettings.TryParseFromJson(vm.Config, network, out strategy))
{
TempData.SetStatusMessageModel(new StatusMessageModel()
{
Severity = StatusMessageModel.StatusSeverity.Error,
Message = "Config file was not in the correct format"
});
vm.Confirmation = false;
return(View(nameof(AddDerivationScheme), vm));
}
}
if (vm.ElectrumWalletFile != null)
{
if (!DerivationSchemeSettings.TryParseFromElectrumWallet(await ReadAllText(vm.ElectrumWalletFile), network, out strategy))
{
TempData.SetStatusMessageModel(new StatusMessageModel()
{
Severity = StatusMessageModel.StatusSeverity.Error,
Message = "Electrum wallet/Air-gapped hardware wallet file was not in the correct format"
});
vm.Confirmation = false;
return(View(nameof(AddDerivationScheme), vm));
}
}
else
{
try
{
if (!string.IsNullOrEmpty(vm.DerivationScheme))
{
var newStrategy = ParseDerivationStrategy(vm.DerivationScheme, null, network);
if (newStrategy.AccountDerivation != strategy?.AccountDerivation)
{
var accountKey = string.IsNullOrEmpty(vm.AccountKey) ? null : new BitcoinExtPubKey(vm.AccountKey, network.NBitcoinNetwork);
if (accountKey != null)
{
var accountSettings = newStrategy.AccountKeySettings.FirstOrDefault(a => a.AccountKey == accountKey);
if (accountSettings != null)
{
accountSettings.AccountKeyPath = vm.KeyPath == null ? null : KeyPath.Parse(vm.KeyPath);
accountSettings.RootFingerprint = string.IsNullOrEmpty(vm.RootFingerprint) ? (HDFingerprint?)null : new HDFingerprint(NBitcoin.DataEncoders.Encoders.Hex.DecodeData(vm.RootFingerprint));
}
}
strategy = newStrategy;
strategy.Source = vm.Source;
vm.DerivationScheme = strategy.AccountDerivation.ToString();
}
}
else
{
strategy = null;
}
}
catch
{
ModelState.AddModelError(nameof(vm.DerivationScheme), "Invalid Derivation Scheme");
vm.Confirmation = false;
return(View(nameof(AddDerivationScheme), vm));
}
}
var oldConfig = vm.Config;
vm.Config = strategy == null ? null : strategy.ToJson();
PaymentMethodId paymentMethodId = new PaymentMethodId(network.CryptoCode, PaymentTypes.BTCLike);
var exisingStrategy = store.GetSupportedPaymentMethods(_NetworkProvider)
.Where(c => c.PaymentId == paymentMethodId)
.OfType <DerivationSchemeSettings>()
.FirstOrDefault();
var storeBlob = store.GetStoreBlob();
var wasExcluded = storeBlob.GetExcludedPaymentMethods().Match(paymentMethodId);
var willBeExcluded = !vm.Enabled;
var showAddress = // Show addresses if:
// - If the user is testing the hint address in confirmation screen
(vm.Confirmation && !string.IsNullOrWhiteSpace(vm.HintAddress)) ||
// - The user is clicking on continue after changing the config
(!vm.Confirmation && oldConfig != vm.Config) ||
// - The user is clickingon continue without changing config nor enabling/disabling
(!vm.Confirmation && oldConfig == vm.Config && willBeExcluded == wasExcluded);
showAddress = showAddress && strategy != null;
if (!showAddress)
{
try
{
if (strategy != null)
{
await wallet.TrackAsync(strategy.AccountDerivation);
}
store.SetSupportedPaymentMethod(paymentMethodId, strategy);
storeBlob.SetExcluded(paymentMethodId, willBeExcluded);
store.SetStoreBlob(storeBlob);
}
catch
{
ModelState.AddModelError(nameof(vm.DerivationScheme), "Invalid Derivation Scheme");
return(View(vm));
}
await _Repo.UpdateStore(store);
_EventAggregator.Publish(new WalletChangedEvent()
{
WalletId = new WalletId(storeId, cryptoCode)
});
if (willBeExcluded != wasExcluded)
{
var label = willBeExcluded ? "disabled" : "enabled";
TempData[WellKnownTempData.SuccessMessage] = $"On-Chain payments for {network.CryptoCode} has been {label}.";
}
else
{
TempData[WellKnownTempData.SuccessMessage] = $"Derivation settings for {network.CryptoCode} has been modified.";
}
return(RedirectToAction(nameof(UpdateStore), new { storeId = storeId }));
}
else if (!string.IsNullOrEmpty(vm.HintAddress))
{
BitcoinAddress address = null;
try
{
address = BitcoinAddress.Create(vm.HintAddress, network.NBitcoinNetwork);
}
catch
{
ModelState.AddModelError(nameof(vm.HintAddress), "Invalid hint address");
return(ShowAddresses(vm, strategy));
}
try
{
var newStrategy = ParseDerivationStrategy(vm.DerivationScheme, address.ScriptPubKey, network);
if (newStrategy.AccountDerivation != strategy.AccountDerivation)
{
strategy.AccountDerivation = newStrategy.AccountDerivation;
strategy.AccountOriginal = null;
}
}
catch
{
ModelState.AddModelError(nameof(vm.HintAddress), "Impossible to find a match with this address");
return(ShowAddresses(vm, strategy));
}
vm.HintAddress = "";
TempData[WellKnownTempData.SuccessMessage] =
"Address successfully found, please verify that the rest is correct and click on \"Confirm\"";
ModelState.Remove(nameof(vm.HintAddress));
ModelState.Remove(nameof(vm.DerivationScheme));
}
return(ShowAddresses(vm, strategy));
}