public ResultWrapper <FeeHistoryResults> GetFeeHistory(long blockCount, BlockParameter newestBlock, double[]?rewardPercentiles = null)
{
ResultWrapper <FeeHistoryResults> initialCheckResult = Validate(ref blockCount, newestBlock, rewardPercentiles);
if (initialCheckResult.Result.ResultType == ResultType.Failure)
{
return(initialCheckResult);
}
Block?block = _blockFinder.FindBlock(newestBlock);
if (block is null)
{
return(ResultWrapper <FeeHistoryResults> .Fail("newestBlock: Block is not available", ErrorCodes.ResourceUnavailable));
}
long oldestBlockNumber = block !.Number;
Stack <UInt256> baseFeePerGas = new((int)(blockCount + 1));
baseFeePerGas.Push(BaseFeeCalculator.Calculate(block !.Header, _specProvider.GetSpec(block !.Number + 1)));
Stack <double> gasUsedRatio = new Stack <double>((int)blockCount);
Stack <UInt256[]>?rewards = rewardPercentiles is null || rewardPercentiles.Any() is false ? null : new Stack <UInt256[]>((int)blockCount);
while (block is not null && blockCount > 0)
{
oldestBlockNumber = block.Number;
baseFeePerGas.Push(block.BaseFeePerGas);
gasUsedRatio.Push(block.GasUsed / (double)block.GasLimit);
if (rewards is not null)
{
List <UInt256> rewardsInBlock = CalculateRewardsPercentiles(block, rewardPercentiles);
if (rewardsInBlock is not null)
{
rewards.Push(rewardsInBlock.ToArray());
}
}
blockCount--;
block = _blockFinder.FindParent(block, BlockTreeLookupOptions.RequireCanonical);
}
FeeHistoryResults feeHistoryResults = new(oldestBlockNumber, baseFeePerGas.ToArray(), gasUsedRatio.ToArray(), rewards?.ToArray());
return(ResultWrapper <FeeHistoryResults> .Success(feeHistoryResults));
}