public bool Process(ChainBase mainChain, IBlockProvider blockProvider)
{
var chainCopy = Chain.Clone();
var chainPosition = chainCopy.Changes.Position;
var accountCopy = Account.Clone();
var accountPosition = accountCopy.Entries.Position;
bool newChain = false;
if (!chainCopy.Initialized)
{
newChain = true;
var firstBlock = mainChain.GetBlock(StartHeight);
chainCopy.Initialize(firstBlock.Header, StartHeight);
}
var forkBlock = mainChain.FindFork(chainCopy);
if (forkBlock.HashBlock != chainCopy.Tip.HashBlock)
{
var subChain = chainCopy.CreateSubChain(forkBlock, false, chainCopy.Tip, true);
chainCopy.SetTip(chainCopy.GetBlock(forkBlock.Height));
foreach (var e in accountCopy.GetInChain(subChain, true)
.Where(c => c.Reason != AccountEntryReason.Lock && c.Reason != AccountEntryReason.Unlock)
.Reverse())
{
var neutralized = e.Neutralize();
accountCopy.PushAccountEntry(neutralized);
}
}
var unprocessedBlocks = mainChain.ToEnumerable(true)
.TakeWhile(block => block != forkBlock)
.Concat(newChain ? new ChainedBlock[] { forkBlock } : new ChainedBlock[0])
.Reverse().ToArray();
foreach (var block in unprocessedBlocks)
{
List <byte[]> searchedData = new List <byte[]>();
Scanner.GetScannedPushData(searchedData);
foreach (var unspent in accountCopy.Unspent)
{
searchedData.Add(unspent.OutPoint.ToBytes());
}
var fullBlock = blockProvider.GetBlock(block.HashBlock, searchedData);
if (fullBlock == null)
{
continue;
}
List <Tuple <OutPoint, AccountEntry> > spents = new List <Tuple <OutPoint, AccountEntry> >();
foreach (var spent in FindSpent(fullBlock, accountCopy.Unspent))
{
var entry = new AccountEntry(AccountEntryReason.Outcome,
block.HashBlock,
spent.Spendable, -spent.Spendable.TxOut.Value, spent.TxId);
spents.Add(Tuple.Create(entry.Spendable.OutPoint, entry));
}
if (CheckDoubleSpend)
{
var spentsDico = spents.ToDictionary(t => t.Item1, t => t.Item2);
foreach (var spent in Scanner.FindSpent(fullBlock))
{
if (!spentsDico.ContainsKey(spent.PrevOut))
{
return(false);
}
}
}
foreach (var spent in spents)
{
if (accountCopy.PushAccountEntry(spent.Item2) == null)
{
return(false);
}
}
foreach (var coins in Scanner.ScanCoins(fullBlock, (int)block.Height))
{
int i = 0;
foreach (var output in coins.Coins.Outputs)
{
if (!output.IsNull)
{
var entry = new AccountEntry(AccountEntryReason.Income, block.HashBlock,
new Spendable(new OutPoint(coins.TxId, i), output), output.Value, null);
if (accountCopy.PushAccountEntry(entry) == null)
{
return(false);
}
}
i++;
}
}
chainCopy.SetTip(block);
}
accountCopy.Entries.GoTo(accountPosition);
Account.PushAccountEntries(accountCopy.Entries);
chainCopy.Changes.GoTo(chainPosition);
Chain.PushChanges(chainCopy.Changes);
return(true);
}