public Block DownloadChain(string address, string hash, Action <Block> Hook = null)
{
var maybeBlock = _tangleAccessor.GetSpecificFromAddress <Block>(hash, address);
if (!maybeBlock.HasValue)
{
throw new ArgumentException("Provided Block doesnt exist");
}
var block = maybeBlock.Value;
if (!block.Verify(_consensus.GetDifficulty(block.Height)))
{
throw new ArgumentException("Provided Block is NOT VALID!");
}
Hook?.Invoke(block);
//we store first block! stupid hack
_dataAccessor.AddBlock(block);
while (true)
{
//first we need to get the correct way
var startDifficulty = _consensus.GetDifficulty(block.Height + 1);
var newBlocks = _consensus.FindNewBlocks(block.NextAddress, block.Height + 1, startDifficulty);
//we repeat the whole until we dont have a newer way
if (newBlocks.Count == 0)
{
break;
}
//we then download this whole chain
newBlocks.ForEach(x => _dataAccessor.AddBlock(x));
//we just jump to the latest block
block = newBlocks.Last();
Hook?.Invoke(block);
}
return(block);
}