public override async Task <IEnumerable <WalletAddress> > GetUnspentAddressesAsync(
string toAddress,
decimal amount,
decimal fee,
decimal feePrice,
FeeUsagePolicy feeUsagePolicy,
AddressUsagePolicy addressUsagePolicy,
BlockchainTransactionType transactionType,
CancellationToken cancellationToken = default)
{
var unspentAddresses = (await DataRepository
.GetUnspentAddressesAsync(Currency)
.ConfigureAwait(false))
.ToList();
var selectedAddresses = (await SelectUnspentAddresses(
from: unspentAddresses,
amount: amount,
fee: fee,
feePrice: feePrice,
feeUsagePolicy: feeUsagePolicy,
addressUsagePolicy: addressUsagePolicy,
transactionType: transactionType)
.ConfigureAwait(false))
.ToList();
if (toAddress != null && selectedAddresses.Any(a => a.WalletAddress.Address == toAddress))
{
selectedAddresses.RemoveAll(a => a.WalletAddress.Address != toAddress);
}
return(ResolvePublicKeys(selectedAddresses
.Select(w => w.WalletAddress)
.ToList()));
}
protected IEnumerable <WalletAddress> ApplyAddressUsagePolicy(
List <WalletAddress> addresses,
decimal amount,
decimal fee,
decimal feePrice,
AddressUsagePolicy addressUsagePolicy)
{
var currency = Currencies.GetByName(Currency);
switch (addressUsagePolicy)
{
case AddressUsagePolicy.UseMinimalBalanceFirst:
addresses = addresses.SortList(new AvailableBalanceAscending());
break;
case AddressUsagePolicy.UseMaximumBalanceFirst:
addresses = addresses.SortList(new AvailableBalanceDescending());
break;
case AddressUsagePolicy.UseOnlyOneAddress:
var walletAddress = addresses
.FirstOrDefault(w => w.AvailableBalance() >= amount + currency.GetFeeAmount(fee, feePrice));
return(walletAddress != null
? new List <WalletAddress> {
walletAddress
}
: Enumerable.Empty <WalletAddress>());
default:
throw new Exception("Address usage policy not supported");
}
return(addresses);
}
public override async Task <IEnumerable <WalletAddress> > GetUnspentAddressesAsync(
decimal amount,
decimal fee,
decimal feePrice,
bool isFeePerTransaction,
AddressUsagePolicy addressUsagePolicy,
CancellationToken cancellationToken = default(CancellationToken))
{
var unspentAddresses = (await DataRepository
.GetUnspentAddressesAsync(Currency)
.ConfigureAwait(false))
.ToList();
var selectedAddresses = await SelectUnspentAddressesAsync(
from : unspentAddresses,
to : null,
amount : amount,
fee : fee,
isFeePerTransaction : isFeePerTransaction,
addressUsagePolicy : addressUsagePolicy,
cancellationToken : cancellationToken)
.ConfigureAwait(false);
return(ResolvePublicKeys(selectedAddresses
.Select(w => w.WalletAddress)
.ToList()));
}
protected IEnumerable <WalletAddress> ApplyAddressUsagePolicy(
List <WalletAddress> addresses,
decimal amount,
decimal fee,
decimal feePrice,
AddressUsagePolicy addressUsagePolicy)
{
switch (addressUsagePolicy)
{
case AddressUsagePolicy.UseMinimalBalanceFirst:
addresses = addresses
.SortList(comparison: (a, b) => a.AvailableBalance().CompareTo(b.AvailableBalance()));
break;
case AddressUsagePolicy.UseMaximumBalanceFirst:
addresses = addresses
.SortList(comparison: (a, b) => b.AvailableBalance().CompareTo(a.AvailableBalance()));
break;
case AddressUsagePolicy.UseOnlyOneAddress:
var walletAddress = addresses
.FirstOrDefault(w => w.AvailableBalance() >= amount + Currency.GetFeeAmount(fee, feePrice));
return(walletAddress != null
? new List <WalletAddress> {
walletAddress
}
: Enumerable.Empty <WalletAddress>());
default:
throw new Exception("Address usage policy not supported");
}
return(addresses);
}
public abstract Task <IEnumerable <WalletAddress> > GetUnspentAddressesAsync(
decimal amount,
decimal fee,
decimal feePrice,
bool isFeePerTransaction,
AddressUsagePolicy addressUsagePolicy,
CancellationToken cancellationToken = default(CancellationToken));
public abstract Task <IEnumerable <WalletAddress> > GetUnspentAddressesAsync(
string toAddress,
decimal amount,
decimal fee,
decimal feePrice,
FeeUsagePolicy feeUsagePolicy,
AddressUsagePolicy addressUsagePolicy,
BlockchainTransactionType transactionType,
CancellationToken cancellationToken = default);
public override async Task <IEnumerable <WalletAddress> > GetUnspentAddressesAsync(
decimal amount,
decimal fee,
decimal feePrice,
bool isFeePerTransaction,
AddressUsagePolicy addressUsagePolicy,
CancellationToken cancellationToken = default(CancellationToken))
{
// todo: unspent address using policy (transaction count minimization?)
var unspentAddresses = (await DataRepository
.GetUnspentAddressesAsync(Currency)
.ConfigureAwait(false))
.ToList();
unspentAddresses = ApplyAddressUsagePolicy(
addresses: unspentAddresses,
amount: amount,
fee: fee,
feePrice: feePrice,
addressUsagePolicy: addressUsagePolicy)
.ToList();
if (unspentAddresses.Count == 0)
{
return(unspentAddresses);
}
var requiredAmount = amount + fee;
var usedAddresses = new List <WalletAddress>();
var usedAmount = 0m;
foreach (var walletAddress in unspentAddresses)
{
if (usedAmount >= requiredAmount)
{
break;
}
usedAddresses.Add(walletAddress);
usedAmount += walletAddress.AvailableBalance();
}
if (requiredAmount > 0 && usedAmount < requiredAmount)
{
return(Enumerable.Empty <WalletAddress>());
}
return(ResolvePublicKeys(usedAddresses));
}
public Task <IEnumerable <WalletAddress> > GetUnspentAddressesAsync(
Currency currency,
decimal amount,
decimal fee,
decimal feePrice,
bool isFeePerTransaction,
AddressUsagePolicy addressUsagePolicy,
CancellationToken cancellationToken = default(CancellationToken))
{
return(GetAccountByCurrency(currency)
.GetUnspentAddressesAsync(
amount: amount,
fee: fee,
feePrice: feePrice,
isFeePerTransaction: isFeePerTransaction,
addressUsagePolicy: addressUsagePolicy,
cancellationToken: cancellationToken));
}
public Task <IEnumerable <WalletAddress> > GetUnspentAddressesAsync(
string currency,
string toAddress,
decimal amount,
decimal fee,
decimal feePrice,
FeeUsagePolicy feeUsagePolicy,
AddressUsagePolicy addressUsagePolicy,
BlockchainTransactionType transactionType,
CancellationToken cancellationToken = default)
{
return(GetCurrencyAccount(currency)
.GetUnspentAddressesAsync(
toAddress: toAddress,
amount: amount,
fee: fee,
feePrice: feePrice,
feeUsagePolicy: feeUsagePolicy,
addressUsagePolicy: addressUsagePolicy,
transactionType: transactionType,
cancellationToken: cancellationToken));
}
public override async Task <IEnumerable <WalletAddress> > GetUnspentAddressesAsync(
string toAddress,
decimal amount,
decimal fee,
decimal feePrice,
FeeUsagePolicy feeUsagePolicy,
AddressUsagePolicy addressUsagePolicy,
BlockchainTransactionType transactionType,
CancellationToken cancellationToken = default)
{
var unspentAddresses = (await DataRepository
.GetUnspentAddressesAsync(Currency)
.ConfigureAwait(false))
.ToList();
if (!transactionType.HasFlag(BlockchainTransactionType.SwapRedeem) &&
!transactionType.HasFlag(BlockchainTransactionType.SwapRefund))
{
unspentAddresses = unspentAddresses
.Where(w => w.Address != toAddress)
.ToList();
}
var selectedAddresses = await SelectUnspentAddressesAsync(
from : unspentAddresses,
to : toAddress,
amount : amount,
fee : fee,
feePrice : 0,
feeUsagePolicy : feeUsagePolicy,
addressUsagePolicy : addressUsagePolicy,
transactionType : transactionType,
cancellationToken : cancellationToken)
.ConfigureAwait(false);
return(ResolvePublicKeys(selectedAddresses
.Select(w => w.WalletAddress)
.ToList()));
}
public override async Task <IEnumerable <WalletAddress> > GetUnspentAddressesAsync(
string toAddress,
decimal amount,
decimal fee,
decimal feePrice,
FeeUsagePolicy feeUsagePolicy,
AddressUsagePolicy addressUsagePolicy,
BlockchainTransactionType transactionType,
CancellationToken cancellationToken = default)
{
if (feeUsagePolicy == FeeUsagePolicy.EstimatedFee)
{
var estimatedFee = await EstimateFeeAsync(
to : toAddress,
amount : amount,
type : transactionType,
cancellationToken : cancellationToken)
.ConfigureAwait(false);
if (estimatedFee == null)
{
return(Enumerable.Empty <WalletAddress>());
}
fee = estimatedFee.Value;
}
var unspentAddresses = (await DataRepository
.GetUnspentAddressesAsync(Currency)
.ConfigureAwait(false))
.ToList();
unspentAddresses = ApplyAddressUsagePolicy(
addresses: unspentAddresses,
amount: amount,
fee: fee,
feePrice: feePrice,
addressUsagePolicy: addressUsagePolicy)
.ToList();
if (unspentAddresses.Count == 0)
{
return(unspentAddresses);
}
var requiredAmount = amount + fee;
var usedAddresses = new List <WalletAddress>();
var usedAmount = 0m;
foreach (var walletAddress in unspentAddresses)
{
if (usedAmount >= requiredAmount)
{
break;
}
usedAddresses.Add(walletAddress);
usedAmount += walletAddress.AvailableBalance();
}
if (requiredAmount > 0 && usedAmount < requiredAmount)
{
return(Enumerable.Empty <WalletAddress>());
}
return(ResolvePublicKeys(usedAddresses));
}
private async Task <IEnumerable <SelectedWalletAddress> > SelectUnspentAddressesAsync(
IList <WalletAddress> from,
string to,
decimal amount,
decimal fee,
FeeUsagePolicy feeUsagePolicy,
AddressUsagePolicy addressUsagePolicy,
BlockchainTransactionType transactionType,
CancellationToken cancellationToken = default)
{
var xtz = Xtz;
if (addressUsagePolicy == AddressUsagePolicy.UseMinimalBalanceFirst)
{
from = from.ToList().SortList(new AvailableBalanceAscending());
}
else if (addressUsagePolicy == AddressUsagePolicy.UseMaximumBalanceFirst)
{
from = from.ToList().SortList(new AvailableBalanceDescending());
}
else if (addressUsagePolicy == AddressUsagePolicy.UseMaximumChainBalanceFirst)
{
var xtzUnspentAddresses = (await DataRepository
.GetUnspentAddressesAsync(xtz.Name)
.ConfigureAwait(false))
.ToList();
if (!xtzUnspentAddresses.Any())
{
Log.Debug("Unsufficient XTZ ammount for FA2 token processing");
return(Enumerable.Empty <SelectedWalletAddress>());
}
xtzUnspentAddresses = xtzUnspentAddresses.ToList().SortList(new AvailableBalanceDescending());
from = xtzUnspentAddresses.FindAll(a => from.Select(b => b.Address).ToList().Contains(a.Address));
}
else if (addressUsagePolicy == AddressUsagePolicy.UseOnlyOneAddress)
{
var xtzUnspentAddresses = (await DataRepository
.GetUnspentAddressesAsync(xtz.Name)
.ConfigureAwait(false))
.ToList();
xtzUnspentAddresses = xtzUnspentAddresses.ToList().SortList(new AvailableBalanceAscending());
if (!xtzUnspentAddresses.Any())
{
Log.Debug("Unsufficient XTZ ammount for FA2 token processing");
return(Enumerable.Empty <SelectedWalletAddress>());
}
from = from.ToList()
.Concat(xtzUnspentAddresses.FindAll(a => from.Select(b => b.Address).ToList().Contains(a.Address) == false))
.ToList();
//"to" used for redeem and refund - using the destination address is prefered
from = from.Where(a => a.Address == to).Concat(from.Where(a => a.Address != to)).ToList();
}
var result = new List <SelectedWalletAddress>();
var requiredAmount = amount;
var isFirstTx = true;
var completed = false;
foreach (var address in from)
{
var availableBalanceInTokens = address.AvailableBalance();
var xtzAddress = await DataRepository
.GetWalletAddressAsync(xtz.Name, address.Address)
.ConfigureAwait(false);
var availableBalanceInTez = xtzAddress != null?xtzAddress.AvailableBalance() : 0m;
var txFeeInTez = feeUsagePolicy == FeeUsagePolicy.FeePerTransaction
? fee
: await FeeByType(
type : transactionType,
from : address.Address,
cancellationToken : cancellationToken)
.ConfigureAwait(false);
var storageFeeInTez = StorageFeeByTypeAsync(
type: transactionType);
var leftBalanceInTez = availableBalanceInTez - txFeeInTez - storageFeeInTez - xtz.MicroTezReserve.ToTez();
if (leftBalanceInTez < 0) // ignore address with balance less than fee
{
Log.Debug("Unsufficient XTZ ammount for FA2 token processing on address {@address} with available balance {@balance} and needed amount {@amount}",
address.Address,
availableBalanceInTez,
txFeeInTez + storageFeeInTez + xtz.MicroTezReserve.ToTez());
continue;
}
if (addressUsagePolicy == AddressUsagePolicy.UseOnlyOneAddress)
{
if (Math.Min(availableBalanceInTokens, requiredAmount) == requiredAmount)
{
return new List <SelectedWalletAddress> {
new SelectedWalletAddress
{
WalletAddress = address,
UsedAmount = amount,
UsedFee = txFeeInTez,
UsedStorageFee = storageFeeInTez
}
}
}
;
continue;
}
decimal amountToUse = 0;
amountToUse = Math.Min(availableBalanceInTokens, requiredAmount);
requiredAmount -= amountToUse;
if (amountToUse > 0)
{
result.Add(new SelectedWalletAddress
{
WalletAddress = address,
UsedAmount = amountToUse,
UsedFee = txFeeInTez,
UsedStorageFee = storageFeeInTez
});
}
if (requiredAmount <= 0)
{
completed = true;
if (feeUsagePolicy == FeeUsagePolicy.FeeForAllTransactions)
{
var estimatedFee = result.Sum(s => s.UsedFee);
var remainingFee = fee - estimatedFee;
var extraFee = 0m;
if (remainingFee > 0)
{
foreach (var s in result)
{
xtzAddress = await DataRepository
.GetWalletAddressAsync(xtz.Name, s.WalletAddress.Address)
.ConfigureAwait(false);
extraFee = s == result.Last()
? Math.Min(xtzAddress.AvailableBalance() - s.UsedFee - s.UsedStorageFee - xtz.MicroTezReserve.ToTez(), remainingFee)
: Math.Min(xtzAddress.AvailableBalance() - s.UsedFee - s.UsedStorageFee - xtz.MicroTezReserve.ToTez(), Math.Round(remainingFee * s.UsedFee / estimatedFee, xtz.Digits));
remainingFee -= extraFee;
estimatedFee -= s.UsedFee;
s.UsedFee += extraFee;
if (remainingFee <= 0)
{
break;
}
}
}
else if (remainingFee < 0) //todo: delete
{
Log.Error("Error fee is too small for transaction, fee is {@fee} with estimated fee {@estimatedFee}",
fee,
estimatedFee);
return(Enumerable.Empty <SelectedWalletAddress>());
}
}
break;
}
if (isFirstTx)
{
isFirstTx = false;
}
}
if (completed)
{
return(result);
}
if (feeUsagePolicy == FeeUsagePolicy.FeeForAllTransactions) //todo: delete
{
Log.Error("Error fee is too big for transaction, fee is {@fee} with estimated fee {@estimatedFee}",
fee,
result.Sum(s => s.UsedFee));
}
return(Enumerable.Empty <SelectedWalletAddress>());
}
private async Task <IEnumerable <SelectedWalletAddress> > SelectUnspentAddressesAsync(
IList <WalletAddress> from,
string to,
decimal amount,
decimal fee,
bool isFeePerTransaction,
AddressUsagePolicy addressUsagePolicy,
CancellationToken cancellationToken = default(CancellationToken))
{
var activationFeeTez = 0m;
if (to != null)
{
var api = (ITezosBlockchainApi)Xtz.BlockchainApi;
var isActive = await api
.IsActiveAddress(to, cancellationToken)
.ConfigureAwait(false);
activationFeeTez = !isActive
? Xtz.ActivationFee.ToTez()
: 0;
}
if (addressUsagePolicy == AddressUsagePolicy.UseMinimalBalanceFirst)
{
from = from.ToList().SortList((a, b) => a.AvailableBalance().CompareTo(b.AvailableBalance()));
}
else if (addressUsagePolicy == AddressUsagePolicy.UseMaximumBalanceFirst)
{
from = from.ToList().SortList((a, b) => b.AvailableBalance().CompareTo(a.AvailableBalance()));
}
else if (addressUsagePolicy == AddressUsagePolicy.UseOnlyOneAddress)
{
var address = from.FirstOrDefault(w => w.AvailableBalance() >= amount + fee + activationFeeTez);
return(address != null
? new List <SelectedWalletAddress> {
new SelectedWalletAddress
{
WalletAddress = address,
UsedAmount = amount,
UsedFee = fee + activationFeeTez
}
}
: Enumerable.Empty <SelectedWalletAddress>());
}
for (var txCount = 1; txCount <= from.Count; ++txCount)
{
var result = new List <SelectedWalletAddress>();
var requiredAmount = amount;
var feePerTx = isFeePerTransaction
? fee
: fee / txCount;
var firstTx = true;
var completed = false;
foreach (var address in from)
{
var availableBalance = address.AvailableBalance();
var txFee = firstTx
? feePerTx + activationFeeTez
: feePerTx;
if (availableBalance <= txFee) // ignore address with balance less than fee
{
continue;
}
var amountToUse = Math.Min(Math.Max(availableBalance - txFee, 0), requiredAmount);
result.Add(new SelectedWalletAddress
{
WalletAddress = address,
UsedAmount = amountToUse,
UsedFee = txFee
});
requiredAmount -= amountToUse;
if (requiredAmount <= 0)
{
completed = true;
break;
}
if (result.Count == txCount) // will need more transactions
{
break;
}
if (firstTx)
{
firstTx = false;
}
}
if (completed)
{
return(result);
}
}
return(Enumerable.Empty <SelectedWalletAddress>());
}
public override Task <IEnumerable <SelectedWalletAddress> > SelectUnspentAddressesAsync(
IList <WalletAddress> from,
string to,
decimal amount,
decimal fee,
decimal feePrice,
FeeUsagePolicy feeUsagePolicy,
AddressUsagePolicy addressUsagePolicy,
BlockchainTransactionType transactionType,
CancellationToken cancellationToken = default)
{
var eth = Eth;
if (addressUsagePolicy == AddressUsagePolicy.UseMinimalBalanceFirst)
{
from = from.ToList().SortList(new AvailableBalanceAscending());
}
else if (addressUsagePolicy == AddressUsagePolicy.UseMaximumBalanceFirst)
{
from = from.ToList().SortList(new AvailableBalanceDescending());
}
else if (addressUsagePolicy == AddressUsagePolicy.UseOnlyOneAddress)
{
var feeInEth = feeUsagePolicy == FeeUsagePolicy.EstimatedFee
? eth.GetFeeAmount(GasLimitByType(transactionType, isFirstTx: true), eth.GasPriceInGwei)
: eth.GetFeeAmount(fee, feePrice);
var address = from.FirstOrDefault(w => w.AvailableBalance() >= amount + feeInEth);
return(address != null
? Task.FromResult <IEnumerable <SelectedWalletAddress> >(new List <SelectedWalletAddress>
{
new SelectedWalletAddress
{
WalletAddress = address,
UsedAmount = amount,
UsedFee = feeInEth
}
})
: Task.FromResult(Enumerable.Empty <SelectedWalletAddress>()));
}
for (var txCount = 1; txCount <= from.Count; ++txCount)
{
var result = new List <SelectedWalletAddress>();
var requiredAmount = amount;
var isFirstTx = true;
var completed = false;
foreach (var address in from)
{
var availableBalance = address.AvailableBalance();
var txFee = feeUsagePolicy == FeeUsagePolicy.EstimatedFee
? eth.GetFeeAmount(GasLimitByType(transactionType, isFirstTx), eth.GasPriceInGwei)
: feeUsagePolicy == FeeUsagePolicy.FeeForAllTransactions
? Math.Round(eth.GetFeeAmount(fee, feePrice) / txCount, eth.Digits)
: eth.GetFeeAmount(fee, feePrice);
if (availableBalance <= txFee) // ignore address with balance less than fee
{
if (result.Count + from.Count - from.IndexOf(address) <= txCount)
{
break;
}
else
{
continue;
}
}
var amountToUse = Math.Min(Math.Max(availableBalance - txFee, 0), requiredAmount);
result.Add(new SelectedWalletAddress
{
WalletAddress = address,
UsedAmount = amountToUse,
UsedFee = txFee
});
requiredAmount -= amountToUse;
if (requiredAmount <= 0)
{
completed = true;
break;
}
if (result.Count == txCount) // will need more transactions
{
break;
}
if (isFirstTx)
{
isFirstTx = false;
}
}
if (completed)
{
return(Task.FromResult <IEnumerable <SelectedWalletAddress> >(result));
}
}
return(Task.FromResult(Enumerable.Empty <SelectedWalletAddress>()));
}
private async Task <IEnumerable <SelectedWalletAddress> > SelectUnspentAddresses(
List <WalletAddress> from,
decimal amount,
decimal fee,
decimal feePrice,
FeeUsagePolicy feeUsagePolicy,
AddressUsagePolicy addressUsagePolicy,
BlockchainTransactionType transactionType)
{
var erc20 = Erc20;
var eth = Eth;
if (addressUsagePolicy == AddressUsagePolicy.UseMinimalBalanceFirst)
{
from = from.ToList().SortList((a, b) => a.AvailableBalance().CompareTo(b.AvailableBalance()));
}
else if (addressUsagePolicy == AddressUsagePolicy.UseMaximumBalanceFirst)
{
from = from.ToList().SortList((a, b) => b.AvailableBalance().CompareTo(a.AvailableBalance()));
}
else if (addressUsagePolicy == AddressUsagePolicy.UseMaximumChainBalanceFirst)
{
var ethUnspentAddresses = (await DataRepository
.GetUnspentAddressesAsync(eth.Name)
.ConfigureAwait(false))
.ToList();
if (!ethUnspentAddresses.Any())
{
Log.Debug("Unsufficient ETH ammount for ERC20 token processing");
return(Enumerable.Empty <SelectedWalletAddress>());
}
ethUnspentAddresses = ethUnspentAddresses.SortList((a, b) => b.AvailableBalance().CompareTo(a.AvailableBalance()));
from = from.FindAll(
a => ethUnspentAddresses.Select(b => b.Address)
.ToList()
.Contains(a.Address));
}
else if (addressUsagePolicy == AddressUsagePolicy.UseOnlyOneAddress)
{
var result = new List <SelectedWalletAddress>();
var feeInEth = feeUsagePolicy == FeeUsagePolicy.EstimatedFee
? erc20.GetFeeAmount(GasLimitByType(transactionType, isFirstTx: true), erc20.GasPriceInGwei)
: erc20.GetFeeAmount(fee, feePrice);
//take erc20 non zero addresses first
foreach (var address in from.TakeWhile(x => x.AvailableBalance() >= amount))
{
var ethAddress = await DataRepository
.GetWalletAddressAsync(eth.Name, address.Address)
.ConfigureAwait(false);
if (ethAddress == null || ethAddress.AvailableBalance() < feeInEth)
{
Log.Debug("Unsufficient ETH ammount for ERC20 token processing on address {@address} with available balance {@balance} and needed amount {@amount}",
ethAddress.Address,
ethAddress.AvailableBalance(),
feeInEth);
continue;
}
result.Add(new SelectedWalletAddress
{
WalletAddress = address,
UsedAmount = amount,
UsedFee = feeInEth
});
}
if (result.Any() || amount != 0m)
{
return(result);
}
//take non zero eth addresses
var ethUnspentAddresses = (await DataRepository
.GetUnspentAddressesAsync(eth.Name)
.ConfigureAwait(false))
.ToList();
if (!ethUnspentAddresses.Any())
{
Log.Debug("Unsufficient ETH ammount for ERC20 token processing");
return(Enumerable.Empty <SelectedWalletAddress>());
}
ethUnspentAddresses = ethUnspentAddresses.FindAll(a => a.AvailableBalance() > feeInEth);
ethUnspentAddresses = ethUnspentAddresses.SortList((a, b) => a.AvailableBalance().CompareTo(b.AvailableBalance()));
foreach (var address in ethUnspentAddresses)
{
result.Add(new SelectedWalletAddress
{
WalletAddress = address,
UsedAmount = amount,
UsedFee = feeInEth
});
}
return(result);
}
for (var txCount = 1; txCount <= from.Count; ++txCount)
{
var result = new List <SelectedWalletAddress>();
var requiredAmount = amount;
var isFirstTx = true;
var completed = false;
foreach (var address in from)
{
var availableBalance = address.AvailableBalance();
if (!(availableBalance > 0))
{
continue;
}
var ethAddress = await DataRepository
.GetWalletAddressAsync(eth.Name, address.Address)
.ConfigureAwait(false);
var ethAvailableBalance = ethAddress != null?ethAddress.AvailableBalance() : 0;
var txFee = feeUsagePolicy == FeeUsagePolicy.EstimatedFee
? eth.GetFeeAmount(GasLimitByType(transactionType, isFirstTx), erc20.GasPriceInGwei)
: feeUsagePolicy == FeeUsagePolicy.FeeForAllTransactions
? Math.Round(eth.GetFeeAmount(fee, feePrice) / txCount, eth.Digits)
: eth.GetFeeAmount(fee, feePrice);
if (ethAvailableBalance < txFee) // ignore address with balance less than fee
{
Log.Debug("Unsufficient ETH ammount for ERC20 token processing on address {@address} with available balance {@balance} and needed amount {@amount}",
ethAddress.Address,
ethAddress.AvailableBalance(),
txFee);
if (result.Count + from.Count - from.IndexOf(address) <= txCount)
{
break;
}
else
{
continue;
}
}
var amountToUse = Math.Min(availableBalance, requiredAmount);
result.Add(new SelectedWalletAddress
{
WalletAddress = address,
UsedAmount = amountToUse,
UsedFee = txFee
});
requiredAmount -= amountToUse;
if (requiredAmount <= 0)
{
completed = true;
break;
}
if (result.Count == txCount) // will need more transactions
{
break;
}
if (isFirstTx)
{
isFirstTx = false;
}
}
if (completed)
{
return(result);
}
}
return(Enumerable.Empty <SelectedWalletAddress>());
}
private IEnumerable <(WalletAddress, decimal)> SelectUnspentAddresses(
IList <WalletAddress> from,
decimal amount,
decimal fee,
decimal feePrice,
bool isFeePerTransaction,
AddressUsagePolicy addressUsagePolicy)
{
if (addressUsagePolicy == AddressUsagePolicy.UseMinimalBalanceFirst)
{
from = from.ToList().SortList((a, b) => a.AvailableBalance().CompareTo(b.AvailableBalance()));
}
else if (addressUsagePolicy == AddressUsagePolicy.UseMaximumBalanceFirst)
{
from = from.ToList().SortList((a, b) => b.AvailableBalance().CompareTo(a.AvailableBalance()));
}
else if (addressUsagePolicy == AddressUsagePolicy.UseOnlyOneAddress)
{
var address = from.FirstOrDefault(w => w.AvailableBalance() >= amount + Currency.GetFeeAmount(fee, feePrice));
return(address != null
? new List <(WalletAddress, decimal)> {
(address, amount + Currency.GetFeeAmount(fee, feePrice))
}
: Enumerable.Empty <(WalletAddress, decimal)>());
}
for (var txCount = 1; txCount <= from.Count; ++txCount)
{
var result = new List <(WalletAddress, decimal)>();
var requiredAmount = amount;
var feePerTx = isFeePerTransaction
? Currency.GetFeeAmount(fee, feePrice)
: Currency.GetFeeAmount(fee, feePrice) / txCount;
var completed = false;
foreach (var address in from)
{
var availableBalance = address.AvailableBalance();
if (availableBalance <= feePerTx) // ignore address with balance less than fee
{
continue;
}
var amountToUse = Math.Min(Math.Max(availableBalance - feePerTx, 0), requiredAmount);
result.Add((address, amountToUse));
requiredAmount -= amountToUse;
if (requiredAmount <= 0)
{
completed = true;
break;
}
if (result.Count == txCount) // will need more transactions
{
break;
}
}
if (completed)
{
return(result);
}
}
return(Enumerable.Empty <(WalletAddress, decimal)>());
}
public override async Task <IEnumerable <SelectedWalletAddress> > SelectUnspentAddressesAsync(
IList <WalletAddress> from,
string to,
decimal amount,
decimal fee,
decimal feePrice,
FeeUsagePolicy feeUsagePolicy,
AddressUsagePolicy addressUsagePolicy,
BlockchainTransactionType transactionType,
CancellationToken cancellationToken = default)
{
var xtz = Xtz;
if (addressUsagePolicy == AddressUsagePolicy.UseMinimalBalanceFirst)
{
from = from.ToList().SortList(new AvailableBalanceAscending());
}
else if (addressUsagePolicy == AddressUsagePolicy.UseMaximumBalanceFirst)
{
from = from.ToList().SortList(new AvailableBalanceDescending());
}
else if (addressUsagePolicy == AddressUsagePolicy.UseOnlyOneAddress)
{
//"to" used for redeem and refund - using the destination address is prefered
from = from.Where(a => a.Address == to).Concat(from.Where(a => a.Address != to)).ToList();
}
var result = new List <SelectedWalletAddress>();
var requiredAmount = amount;
if (feeUsagePolicy == FeeUsagePolicy.FeeForAllTransactions)
{
requiredAmount += fee;
}
var isFirstTx = true;
var completed = false;
foreach (var address in from)
{
var availableBalanceInTez = address.AvailableBalance();
var txFeeInTez = feeUsagePolicy == FeeUsagePolicy.FeePerTransaction
? fee
: await FeeByType(
type : transactionType,
from : address.Address,
isFirstTx : isFirstTx,
cancellationToken : cancellationToken)
.ConfigureAwait(false);
var storageFeeInTez = await StorageFeeByTypeAsync(
type : transactionType,
to : to,
isFirstTx : isFirstTx,
cancellationToken : cancellationToken)
.ConfigureAwait(false);
var netAvailableBalanceInTez = availableBalanceInTez - txFeeInTez - storageFeeInTez - xtz.MicroTezReserve.ToTez();
if (netAvailableBalanceInTez <= 0) // ignore address with balance less than fee
{
continue;
}
if (addressUsagePolicy == AddressUsagePolicy.UseOnlyOneAddress)
{
if (Math.Min(netAvailableBalanceInTez, requiredAmount) == requiredAmount)
{
return new List <SelectedWalletAddress> {
new SelectedWalletAddress
{
WalletAddress = address,
UsedAmount = amount,
UsedFee = txFeeInTez,
UsedStorageFee = storageFeeInTez
}
}
}
;
continue;
}
decimal amountToUse = 0;
if (feeUsagePolicy == FeeUsagePolicy.EstimatedFee)
{
amountToUse = Math.Min(netAvailableBalanceInTez, requiredAmount);
requiredAmount -= amountToUse;
}
else if (feeUsagePolicy == FeeUsagePolicy.FeeForAllTransactions)
{
amountToUse = Math.Min(netAvailableBalanceInTez, requiredAmount - txFeeInTez);
requiredAmount -= (amountToUse + txFeeInTez);
}
if (amountToUse > 0)
{
result.Add(new SelectedWalletAddress
{
WalletAddress = address,
UsedAmount = amountToUse,
UsedFee = txFeeInTez,
UsedStorageFee = storageFeeInTez
});
}
if (requiredAmount <= 0)
{
completed = true;
if (feeUsagePolicy == FeeUsagePolicy.FeeForAllTransactions)
{
requiredAmount = amount;
var estimatedFee = result.Sum(s => s.UsedFee);
var remainingFee = fee - estimatedFee;
var extraFee = 0m;
if (remainingFee > 0)
{
var res = result.ToList();
result = new List <SelectedWalletAddress>();
foreach (var s in res)
{
extraFee = Math.Round(remainingFee * s.UsedFee / estimatedFee, xtz.Digits);
if (extraFee + requiredAmount <= s.UsedAmount)
{
s.UsedAmount = requiredAmount;
s.UsedFee += extraFee;
result.Add(s);
break;
}
if (s == res.Last())
{
s.UsedAmount = requiredAmount;
s.UsedFee += Math.Min(s.WalletAddress.AvailableBalance() - s.UsedAmount - s.UsedFee - s.UsedStorageFee - xtz.MicroTezReserve.ToTez(), remainingFee);
if (s.WalletAddress.AvailableBalance() - s.UsedAmount - s.UsedFee - s.UsedStorageFee - xtz.MicroTezReserve.ToTez() < 0) //check if possible
{
Log.Error("Error in fee distribution for transactions, fee is {@fee} with used fee {@usedFee}",
fee,
s.UsedFee + s.UsedStorageFee);
}
}
else
{
if (extraFee >= s.UsedAmount)
{
//remainingFee -= s.UsedAmount; //todo: use it when replacing allocation fee
//estimatedFee -= s.UsedFee;
//continue;
extraFee = Math.Min(s.UsedAmount - 1 / xtz.DigitsMultiplier, extraFee);
}
remainingFee -= extraFee;
estimatedFee -= s.UsedFee;
s.UsedAmount -= extraFee;
s.UsedFee += extraFee;
}
requiredAmount -= Math.Min(requiredAmount, s.UsedAmount);
result.Add(s);
if (requiredAmount <= 0)
{
break;
}
}
}
else //todo: delete
{
Log.Error("Error fee is too small for transaction, fee is {@fee} with estimated fee {@estimatedFee}",
fee,
estimatedFee);
}
}
break;
}
if (isFirstTx)
{
isFirstTx = false;
}
}
if (completed)
{
return(result);
}
if (feeUsagePolicy == FeeUsagePolicy.FeeForAllTransactions) //todo: delete
{
Log.Error("Error fee is too big for transaction, fee is {@fee} with estimated fee {@estimatedFee}",
fee,
result.Sum(s => s.UsedFee));
}
return(Enumerable.Empty <SelectedWalletAddress>());
}
#endregion Addresses
}
public override Task <IEnumerable <SelectedWalletAddress> > SelectUnspentAddressesAsync(IList <WalletAddress> from, string to, decimal amount, decimal fee, decimal feePrice, FeeUsagePolicy feeUsagePolicy, AddressUsagePolicy addressUsagePolicy, BlockchainTransactionType transactionType, CancellationToken cancellationToken = default)
{
throw new NotImplementedException();
}