protected override async Task HandleAsync(BlockSearchAction action, IDispatcher dispatcher)
{
var hashToSearch = action.hash;
Block blockResult = null;
Block prevBlock = null;
long maxHeight = 0;
string key = null;
if (string.IsNullOrWhiteSpace(hashToSearch))
{
var genSvcRet = await client.GetLastConsolidationBlock();
if (genSvcRet.ResultCode == APIResultCodes.Success)
{
blockResult = genSvcRet.GetBlock();
}
}
else
{
BlockAPIResult ret = null;
if (hashToSearch.Length < 40)
{
ret = await client.GetServiceBlockByIndex(action.hash, action.height);
}
else if (hashToSearch.Length == 44 || hashToSearch.Length == 43) // hash
{
ret = await client.GetBlock(action.hash);
}
else
{
var exists = await client.GetAccountHeight(action.hash);
if (exists.ResultCode == APIResultCodes.Success)
{
maxHeight = exists.Height;
key = action.hash;
ret = await client.GetBlockByIndex(action.hash, action.height == 0?exists.Height : action.height);
}
}
if (ret != null && ret.ResultCode == APIResultCodes.Success)
{
blockResult = ret.GetBlock();
}
}
(key, maxHeight) = await GetMaxHeightAsync(blockResult);
try
{
if (blockResult != null)
{
prevBlock = blockResult.PreviousHash == null ? null : (await client.GetBlock(blockResult.PreviousHash)).GetBlock();
}
}
catch (Exception) { }
dispatcher.Dispatch(new BlockSearchResultAction(blockResult, prevBlock, key, maxHeight));
}
protected TransactionBlock GetBlock(BlockTypes blockType, string json)
{
var ar = new BlockAPIResult
{
ResultBlockType = blockType,
BlockData = json
};
return(ar.GetBlock() as TransactionBlock);
}
private async Task <(string, long)> GetMaxHeightAsync(Block block)
{
BlockAPIResult lastBlockResult = null;
switch (block)
{
case ServiceBlock sb:
lastBlockResult = await client.GetLastServiceBlock();
break;
case ConsolidationBlock cb:
lastBlockResult = await client.GetLastConsolidationBlock();
break;
case TransactionBlock tb:
var tbLastResult = await client.GetAccountHeight(tb.AccountID);
if (tbLastResult.ResultCode == APIResultCodes.Success)
{
return(tb.AccountID, tbLastResult.Height);
}
break;
default:
break;
}
if (lastBlockResult != null && lastBlockResult.ResultCode == APIResultCodes.Success)
{
var lb = lastBlockResult.GetBlock();
return(lb.BlockType.ToString(), lb.Height);
}
else
{
return(null, 0);
}
}
