/// <summary>
/// Create a new transfer and add it to the pending list
/// </summary>
/// <param name="transfer"></param>
public string CreateTransfer(Transfer transfer)
{
if (transfer == null ||
transfer.Amount <= 0 ||
transfer.Biscuit < 0)
{
return("Error with the transfer. It can't be added (You don't have enough money or you're trying to send negative/zero value)");
}
var guid = Guid.NewGuid();
MainViewModel.WaitingForBlockchainAccess(guid);
var chain = MainViewModel.BlockChain.Chain.ToArray();
var transactions = MainViewModel.BlockChain.PendingTransfers.ToArray();
MainViewModel.BlockChainWaitingList.Remove(guid);
if (GetBalance(transfer.FromAddress, chain, transactions) >= transfer.Amount + transfer.Biscuit ||
new User(Constants.PRIVATE_WORDS_KITTYCHAIN).PublicAddress == transfer.FromAddress)
{
PendingTransfers.Add(transfer);
var receivers = MainViewModel.BlockChainUpdated?.GetInvocationList();
if (receivers != null)
{
foreach (EventHandler receiver in receivers)
{
receiver.BeginInvoke(this, EventArgs.Empty, null, null);
}
}
return(Constants.TRANSFER_ADDED);
}
return("Error with the transfer. It can't be added (You don't have enough money or you're trying to send negative/zero value)");
}
/// <summary>
/// Compare 2 blocks with :
/// - Chain
/// - PendingTransfers
/// - Difficulty
/// </summary>
/// <param name="obj">
/// The compared object, transform in KittyChain object
/// </param>
public override bool Equals(object obj)
{
if (!(obj is KittyChain other) ||
!Chain.SequenceEqual(other.Chain) ||
!PendingTransfers.SequenceEqual(other.PendingTransfers) ||
!Difficulty.Equals(other.Difficulty))
{
return(false);
}
return(true);
}
/// <summary>
/// Add the created block to the blockchain
/// Create the transfer to give the biscuit to the creator of the block
/// </summary>
/// <param name="block"></param>
public string AddBlock(Block block)
{
block.Transfers = PendingTransfers.ToArray();
PendingTransfers = new List <Transfer>();
block.Index = LastBlock.Index + 1;
Chain.Add(block);
if (block.Index % Constants.NUMBER_OF_BLOCKS_TO_CHECK_DIFFICULTY == 0)
{
return(CheckDifficulty());
}
var receivers = MainViewModel.BlockChainUpdated?.GetInvocationList();
if (receivers != null)
{
foreach (EventHandler receiver in receivers)
{
receiver.BeginInvoke(this, EventArgs.Empty, null, null);
}
}
return("");
}
