//ver1
public static Transaction NewTransaction(string from, string to, int amount, UTXOSet set)
{
var inputs = new List <TxInput>();
var outputs = new List <TxOutput>();
var walletBank = new WalletBank();
var wallet = walletBank.FindWallet(from);
var pubKeyHash = wallet.PublicKeyHash;
var spendableOutputs = set.FindSpendableOutputs(pubKeyHash, amount);
var account = spendableOutputs.Item2;
var validOutputs = spendableOutputs.Item1;
if (account < amount)
{
Console.WriteLine("Insufficient funds");
return(null);
}
else
{
foreach (var output in validOutputs.Keys)
{
var txId = (output);
if (validOutputs.ContainsKey(txId))
{
foreach (var @out in validOutputs[txId])
{
var input = new TxInput()
{
Id = HexadecimalEncoding.FromHexStringToByte(txId), Out = @out, Signature = null, PubKey = wallet.PublicKey
};
inputs.Add(input);
}
}
}
outputs.Add(TxOutput.NewTxOutput(amount, to));
if (account > amount)
{
outputs.Add(TxOutput.NewTxOutput(account - amount, from));
}
}
var tx = new Transaction()
{
Id = null,
Inputs = inputs,
Outputs = outputs,
TimeStamp = DateTime.Now
};
tx.Id = tx.CalculateHash();
set.Chain.SignTransaction(tx, wallet.PrivateKey);
return(tx);
}
public void ReindexUTXO()
{
var utxoSet = new UTXOSet(this);
utxoSet.ReIndex();
var countTxs = utxoSet.CountTransactions();
Console.WriteLine("DONE, there is: " + countTxs + " transactions");
}
public float GetBalance(string address)
{
var balance = 0;
var pubKeyHash = WalletCore.TransferAddressToPkHash(address);
var utxoSet = new UTXOSet(this);
var utxo = FindUnspentTransactionsOutputs(pubKeyHash);
foreach (var output in utxo)
{
balance += output.Value;
}
Console.WriteLine("Balance of " + address + ": " + balance);
return(balance);
}
