public void DebugToConsole(IEnumerable <BCTransaction> transactionList)
{
BCTransactionProvider bc = new BCTransactionProvider();
BCTransaction prevItem = null;
foreach (var item in transactionList)
{
bool isValid = true;
if (prevItem != null)
{
isValid = bc.IsValid(prevItem, item);
}
if (isValid == false)
{
Console.ForegroundColor = ConsoleColor.Red;
}
Console.WriteLine($"Transaction Id: {item.TransactionId}");
Console.WriteLine($"Transaction Previous Id: {item.TransactionPreviousId}");
Console.WriteLine($"Owner Id: {item.OwnerId}");
Console.WriteLine($"Date Created: {item.DateCreated}");
Console.WriteLine($"Transaction amount: {item.Amount}");
Console.WriteLine($"Balance: {item.Balance}"); Console.WriteLine($"Transaction Hash (simple): {item.TransactionHashSimple}");
Console.WriteLine($"Transaction Hash (crypto): {item.TransactionHashCrypto}");
Console.WriteLine("--------------------------------------------");
Console.ResetColor();
prevItem = item;
}
}
private void InitializeBCTransactions()
{
_bcTransactions = new List <BCTransaction>();
BCTransaction newBCTrans;
BCTransactionProvider bctProvider;
newBCTrans =
new BCTransaction {
TransactionId = "0", OwnerId = "ABC", TransactionPreviousId = "0", DateCreated = Convert.ToDateTime("2019-04-01 14:45"), Amount = 0
};
_bcTransactions.Add(newBCTrans);
//Create some mock transactions
for (int i = 1; i < _numberOfTransactions + 1; i++)
{
bctProvider = new BCTransactionProvider();
Random random = new Random();
int randomNumber = random.Next(-500, 500);
if (randomNumber == 0)
{
randomNumber = random.Next(10, 500);
}
newBCTrans = bctProvider.AddTransaction(newBCTrans.TransactionId, newBCTrans.TransactionHashCrypto, i.ToString(), "ABC", DateTime.Now, randomNumber, newBCTrans.Balance);
_bcTransactions.Add(newBCTrans);
}
}
public bool IsValid(BCTransaction previousTransaction, BCTransaction nextTransaction)
{
var transHashes = BlockChainer.GetHashedValue(previousTransaction.TransactionId, previousTransaction.TransactionHashCrypto, nextTransaction);
var validationHash = nextTransaction.TransactionHashCrypto;
return(transHashes.Item2 == validationHash);
}
public BCTransaction AddTransaction(string transactionPreviousId, string transactionPreviousHashId, string transactionId, string ownderId, DateTime dateCreated, decimal amount, decimal balance)
{
BCTransaction bCTransaction = new BCTransaction()
{
TransactionPreviousId = transactionPreviousId,
TransactionId = transactionId,
OwnerId = ownderId,
DateCreated = dateCreated,
Amount = amount,
Balance = balance + amount
};
var transHashes = BlockChainer.GetHashedValue(transactionPreviousId, transactionPreviousHashId, bCTransaction);
bCTransaction.TransactionHashSimple = transHashes.Item1;
bCTransaction.TransactionHashCrypto = transHashes.Item2;
return(bCTransaction);
}
public void SaveToFile(IEnumerable <BCTransaction> transactionList, string filename)
{
BCTransactionProvider bc = new BCTransactionProvider();
BCTransaction prevItem = null;
using (StreamWriter sw = new StreamWriter($@"{filename}"))
{
sw.WriteLine("Transaction Id;Transaction Previous Id;Owner Id;Date Created;Transaction amount;Balance;Hash;HashCrypto;IsValid");
foreach (var item in transactionList)
{
bool isValid = true;
if (prevItem != null)
{
isValid = bc.IsValid(prevItem, item);
}
sw.WriteLine($"{item.TransactionId};{item.TransactionPreviousId};{item.OwnerId};{item.DateCreated};{item.Amount};{item.Balance};'{item.TransactionHashSimple}';{item.TransactionHashCrypto};{isValid}");
prevItem = item;
}
}
}
public static (string, string) GetHashedValue(string transactionPreviousId, string transactionPreviousHashId, BCTransaction bcTransaction)
{
string transactionHashSimple = $"{transactionPreviousId}:{bcTransaction.TransactionId}";
string data = transactionPreviousHashId + bcTransaction.TransactionId + bcTransaction.DateCreated.ToString("yyyyMMddHHmmss") + bcTransaction.Amount.ToString() + bcTransaction.OwnerId;
string transactionHashCrypto = CryptoSha256.ComputeHash(data);
return(transactionHashSimple, transactionHashCrypto);
}
