private async Task <TransactionSummary> TxToJSON(ITransaction tx, UInt64 blockHeight, bool confirmed,
bool returnLegacyAddresses, bool noAsm, bool noScriptSig,
bool noSpend)
{
UInt32 blockTimestamp = 0;
string blockHash = "";
if (confirmed)
{
using (var getBlockHeaderResult = await chain_.FetchBlockHeaderByHeightAsync(blockHeight))
{
Utils.CheckBitprimApiErrorCode(getBlockHeaderResult.ErrorCode, "FetchBlockHeaderByHeightAsync(" + blockHeight + ") failed, check error log");
IHeader blockHeader = getBlockHeaderResult.Result.BlockData;
blockTimestamp = blockHeader.Timestamp;
blockHash = Binary.ByteArrayToHexString(blockHeader.Hash);
}
}
ApiCallResult <UInt64> getLastHeightResult = await chain_.FetchLastHeightAsync();
Utils.CheckBitprimApiErrorCode(getLastHeightResult.ErrorCode, "FetchLastHeightAsync failed, check error log");
var txJson = new TransactionSummary();
txJson.txid = Binary.ByteArrayToHexString(tx.Hash);
txJson.version = tx.Version;
txJson.locktime = tx.Locktime;
txJson.vin = await TxInputsToJSON(tx, returnLegacyAddresses, noAsm, noScriptSig);
txJson.vout = await TxOutputsToJSON(tx, returnLegacyAddresses, noAsm, noSpend);
txJson.confirmations = confirmed? getLastHeightResult.Result - blockHeight + 1 : 0;
txJson.isCoinBase = tx.IsCoinbase;
txJson.valueOut = Utils.SatoshisToCoinUnits(tx.TotalOutputValue);
txJson.size = tx.GetSerializedSize();
UInt64 inputsTotal = await ManuallyCalculateInputsTotal(tx); //TODO Solve at native layer
txJson.valueIn = Utils.SatoshisToCoinUnits(inputsTotal);
if (confirmed)
{
txJson.blockhash = blockHash;
txJson.time = blockTimestamp;
txJson.blocktime = blockTimestamp;
txJson.blockheight = (Int64)blockHeight;
}
else
{
txJson.blockheight = -1;
txJson.time = (UInt32)DateTimeOffset.UtcNow.ToUnixTimeSeconds();
}
if (!tx.IsCoinbase)
{
txJson.fees = Utils.SatoshisToCoinUnits(inputsTotal - tx.TotalOutputValue); //TODO Solve at native layer
}
return(txJson);
}
private async Task <GetLastBlock> GetLastBlock()
{
if (!memoryCache_.TryGetValue(Constants.Cache.LAST_BLOCK_HEIGHT_CACHE_KEY, out ulong currentHeight))
{
var getLastHeightResult = await chain_.FetchLastHeightAsync();
Utils.CheckBitprimApiErrorCode(getLastHeightResult.ErrorCode, "FetchLastHeightAsync() failed");
currentHeight = getLastHeightResult.Result;
memoryCache_.Set(Constants.Cache.LAST_BLOCK_HEIGHT_CACHE_KEY, currentHeight,
new MemoryCacheEntryOptions
{
AbsoluteExpirationRelativeToNow = Constants.Cache.LAST_BLOCK_HEIGHT_MAX_AGE,
Size = Constants.Cache.LAST_BLOCK_HEIGHT_ENTRY_SIZE
});
}
if (!memoryCache_.TryGetValue(Constants.Cache.LAST_BLOCK_CACHE_KEY, out GetLastBlock ret))
{
using (var getBlockDataResult = await chain_.FetchBlockHeaderByHeightAsync(currentHeight))
{
Utils.CheckBitprimApiErrorCode(getBlockDataResult.ErrorCode, "FetchBlockHeaderByHeightAsync(" + currentHeight + ") failed");
ret = new GetLastBlock
{
BlockHeight = getBlockDataResult.Result.BlockHeight
, Bits = getBlockDataResult.Result.BlockData.Bits
, Hash = getBlockDataResult.Result.BlockData.Hash
};
memoryCache_.Set(Constants.Cache.LAST_BLOCK_CACHE_KEY, ret,
new MemoryCacheEntryOptions
{
AbsoluteExpirationRelativeToNow = Constants.Cache.LAST_BLOCK_MAX_AGE,
Size = Constants.Cache.LAST_BLOCK_ENTRY_SIZE
});
}
}
return(ret);
}
private async Task <List <BlockSummary> > GetPreviousBlocks(UInt64 startingHeight, UInt64 blockCount, long initialTimeStamp, long lastTimeStamp, UInt64 topHeight)
{
//Prerequisite: blockDateToSearch doesn't include Time. Only date. Kind UTC.
var blocks = new List <BlockSummary>();
var blockWithinDate = true;
for (UInt64 i = 0; i < blockCount && startingHeight >= i && blockWithinDate; i++)
{
using (var getHeaderResult = await chain_.FetchBlockHeaderByHeightAsync(startingHeight - i))
{
Utils.CheckBitprimApiErrorCode(getHeaderResult.ErrorCode, "FetchBlockHeaderByHeightAsync(" + (startingHeight - i) + ") failed, check error log");
blockWithinDate = getHeaderResult.Result.BlockData.Timestamp >= initialTimeStamp && getHeaderResult.Result.BlockData.Timestamp <= lastTimeStamp;
if (blockWithinDate)
{
blocks.Add(await GetBlockSummary(getHeaderResult.Result.BlockData, getHeaderResult.Result.BlockHeight, topHeight));
}
}
}
return(blocks);
}
