public CoinTransaction Send(Dictionary <String, TransactionOutput> chainUtxos, string recipient, decimal amount)
{
if (GetBalance(chainUtxos) < amount)
{
return(null);
}
var inputs = new List <TransactionInput>();
decimal sum = 0;
foreach (var utxoItem in UTXOs)
{
var utxo = utxoItem.Value;
sum += utxo.Amount;
inputs.Add(new TransactionInput()
{
TransactionOutputId = utxo.Id
});
if (sum > amount)
{
break;
}
}
var tx = new CoinTransaction(PublicKey, recipient, amount, inputs);
tx.Sign(this);
foreach (var transactionInput in inputs)
{
UTXOs.Remove(transactionInput.TransactionOutputId);
}
return(tx);
}
public void Mine(Wallet wallet)
{
var txs = _mempoolRepository.GetNextList();
var lastBlockHash = _blockRepository.GetLastBlockHash();
if (lastBlockHash == null)
{
lastBlockHash = InsertGenesis(wallet);
}
var newBlock = new Block(lastBlockHash);
foreach (var tx in txs)
{
switch (tx.Type)
{
case TransactionType.Coins:
break;
case TransactionType.VisitToTheDoctor:
break;
default:
throw new ArgumentOutOfRangeException();
}
}
var coinBase = new Wallet();
var mainedBlockMoney = new CoinTransaction(coinBase.PublicKey, wallet.PublicKey, 100, null);
mainedBlockMoney.Sign(coinBase);
mainedBlockMoney.Id = Guid.NewGuid().ToString();
mainedBlockMoney.Outputs.Add(
new TransactionOutput(mainedBlockMoney.Reciepient, mainedBlockMoney.Amount, mainedBlockMoney.Id)
);
UTXOs[mainedBlockMoney.Outputs[0].Id] = mainedBlockMoney.Outputs[0];
newBlock.AddTransaction(UTXOs, mainedBlockMoney);
newBlock.MineBlock(new Random().Next(0, 5));
_blockRepository.Add(newBlock);
}
private string InsertGenesis(Wallet wallet)
{
var coinBase = new Wallet();
var genesisCoinTransaction = new CoinTransaction(coinBase.PublicKey, wallet.PublicKey, 100, null);
genesisCoinTransaction.Sign(coinBase);
genesisCoinTransaction.Id = "0";
genesisCoinTransaction.Outputs.Add(
new TransactionOutput(genesisCoinTransaction.Reciepient, genesisCoinTransaction.Amount, genesisCoinTransaction.Id)
);
UTXOs[genesisCoinTransaction.Outputs[0].Id] = genesisCoinTransaction.Outputs[0];
var genesis = new Block("0");
genesis.AddTransaction(UTXOs, genesisCoinTransaction);
_blockRepository.Add(genesis);
return(_blockRepository.GetLastBlockHash());
}
public static void Test()
{
WalletA = new Wallet();
WalletB = new Wallet();
var coinBase = new Wallet();
_genesisCoinTransaction = new CoinTransaction(coinBase.PublicKey, WalletA.PublicKey, 100, null);
_genesisCoinTransaction.Sign(coinBase);
_genesisCoinTransaction.Id = "0";
_genesisCoinTransaction.Outputs.Add(
new TransactionOutput(_genesisCoinTransaction.Reciepient, _genesisCoinTransaction.Amount, _genesisCoinTransaction.Id)
);
UTXOs[_genesisCoinTransaction.Outputs[0].Id] = _genesisCoinTransaction.Outputs[0];
var genesis = new Block("0");
genesis.AddTransaction(UTXOs, _genesisCoinTransaction);
AddBlock(genesis);
var balance = WalletA.GetBalance(UTXOs);
var block1 = new Block(genesis.Hash);
block1.AddTransaction(UTXOs, WalletA.Send(UTXOs, WalletB.PublicKey, 40));
AddBlock(block1);
balance = WalletA.GetBalance(UTXOs);
var block2 = new Block(block1.Hash);
block2.AddTransaction(UTXOs, WalletA.Send(UTXOs, WalletB.PublicKey, 1000));
AddBlock(block2);
balance = WalletA.GetBalance(UTXOs);
var block3 = new Block(block2.Hash);
block3.AddTransaction(UTXOs, WalletB.Send(UTXOs, WalletA.PublicKey, 20));
AddBlock(block3);
balance = WalletA.GetBalance(UTXOs);
}