public PriceProfile()
{
CreateMap <IExchangeEntity, PriceDto>()
.ForMember(dest => dest.Symbol, m => m.MapFrom(src => src.TokenSymbol))
.ForMember(dest => dest.Price,
m => m.MapFrom(src => UniswapUtils.CalculateMarginalRate(src.EthLiquidity, src.TokenLiquidity)))
.ForMember(dest => dest.InvPrice,
m => m.MapFrom(src => UniswapUtils.CalculateInvMarginRate(src.EthLiquidity, src.TokenLiquidity)));
}
public ExchangeProfile()
{
CreateMap <IExchangeEntity, ExchangeDto>()
.ForMember(dest => dest.Name, m => m.MapFrom(src => src.TokenName))
.ForMember(dest => dest.Symbol, m => m.MapFrom(src => src.TokenSymbol))
.ForMember(dest => dest.Fee, m => m.MapFrom(src => UniswapUtils.Fee))
.ForMember(dest => dest.Version, m => m.MapFrom(src => UniswapUtils.Version))
.ForMember(dest => dest.ExchangeAddress, m => m.MapFrom(src => src.Id))
.ForMember(dest => dest.EthDecimals, m => m.MapFrom(src => EthUtils.Decimals))
.ForMember(dest => dest.Price, m => m.MapFrom(src => UniswapUtils.CalculateMarginalRate(src.EthLiquidity, src.TokenLiquidity)));
}
public async Task <OperationResult <ExchangeTicker> > GetByAddress(string exchangeAddress)
{
var exchangeEntity = await _exchangeRepository.FindByAsync(exchangeAddress : exchangeAddress);
if (exchangeEntity == null)
{
return(new OperationResult <ExchangeTicker>());
}
var exchangeEvents = await _repository.GetForLastDayByExchangeAddressAsync(exchangeAddress);
if (!exchangeEvents.Any())
{
return(new OperationResult <ExchangeTicker>(null));
}
var orderedPurchaseEvents = exchangeEvents
.Where(IsEthOrTokenPurchaseEvent)
.OrderBy(x => x.BlockNumber)
.ThenBy(x => x.LogIndex);
var ticker = new ExchangeTicker();
if (orderedPurchaseEvents.Any())
{
var firstTrade = orderedPurchaseEvents.First();
var lastTrade = orderedPurchaseEvents.Last();
var startPrice = firstTrade.TokenAmount / firstTrade.EthAmount;
var priceChange = UniswapUtils.CalculateMarginalRate(lastTrade.EthLiquidityBeforeEvent,
lastTrade.TokenLiquidityBeforeEvent) -
UniswapUtils.CalculateMarginalRate(firstTrade.EthLiquidityBeforeEvent,
firstTrade.TokenLiquidityBeforeEvent);
var ethTradeVolume = orderedPurchaseEvents.Sum(@event => @event.EthAmount);
var highPrice = orderedPurchaseEvents.Max(@event =>
UniswapUtils.CalculateMarginalRate(@event.EthLiquidityBeforeEvent,
@event.TokenLiquidityBeforeEvent));
var lowPrice = orderedPurchaseEvents.Min(@event =>
UniswapUtils.CalculateMarginalRate(@event.EthLiquidityBeforeEvent,
@event.TokenLiquidityBeforeEvent));
var weightedAveragePrice =
orderedPurchaseEvents.Sum(@event =>
@event.EthAmount *
UniswapUtils.CalculateMarginalRate(@event.EthLiquidityBeforeEvent,
@event.TokenLiquidityBeforeEvent)) / ethTradeVolume;
ticker.Count = orderedPurchaseEvents.Count();
ticker.LowPrice = lowPrice;
ticker.HighPrice = highPrice;
ticker.LastTradeErc20Qty = lastTrade.TokenAmount;
ticker.LastTradeEthQty = lastTrade.EthAmount;
ticker.LastTradePrice = UniswapUtils.CalculateMarginalRate(lastTrade.EthLiquidityBeforeEvent,
lastTrade.TokenLiquidityBeforeEvent);
ticker.PriceChange = priceChange;
ticker.TradeVolume = ethTradeVolume;
ticker.PriceChangePercent = priceChange / startPrice;
ticker.WeightedAvgPrice = weightedAveragePrice;
}
ticker.EndTime = DateTime.UtcNow.ToUnixTimestamp();
ticker.Erc20Liquidity = exchangeEntity.TokenLiquidity;
ticker.EthLiquidity = exchangeEntity.EthLiquidity;
ticker.Price =
UniswapUtils.CalculateMarginalRate(exchangeEntity.EthLiquidity, exchangeEntity.TokenLiquidity);
ticker.InvPrice =
UniswapUtils.CalculateInvMarginRate(exchangeEntity.EthLiquidity, exchangeEntity.TokenLiquidity);
ticker.Symbol = exchangeEntity.TokenSymbol;
ticker.StartTime = DateTime.UtcNow.Subtract(TimeSpan.FromDays(1)).ToUnixTimestamp();
ticker.Theme = exchangeEntity.Theme;
return(new OperationResult <ExchangeTicker>(ticker));
}