managing-apps/src/Managing.Infrastructure.Web3/Services/Gmx/GmxHelpers.cs

using Managing.Domain.Trades;
using Managing.Infrastructure.Evm.Models.Gmx;
using Managing.Infrastructure.Evm.Referentials;
using Nethereum.Web3;
using System.Numerics;
using static Managing.Common.Enums;

namespace Managing.Infrastructure.Evm.Services.Gmx;

public static class GmxHelpers
{

    public static decimal GetQuantityForLeverage(decimal quantity, decimal? leverage)
    {
        return leverage.HasValue ? leverage.Value * quantity : quantity;
    }

    public static (List<string> CollateralTokens, List<string> IndexTokens, List<bool> IsLong) GetPositionQueryData(List<string> contractAddress)
    {
        var collateralToken = new List<string>();
        var indexTokens = new List<string>();
        var isLongs = new List<bool>();

        foreach (var token in contractAddress)
        {
            collateralToken.Add(token);
            indexTokens.Add(token);
            isLongs.Add(true);
        }

        foreach (var token in contractAddress)
        {
            collateralToken.Add(Arbitrum.Address.USDC);
            indexTokens.Add(token);
            isLongs.Add(false);
        }

        return (collateralToken, indexTokens, isLongs);
    }

    public static List<BigInteger> GetIndexesRange(int lastIndex)
    {
        var indexes = new List<BigInteger>();

        var limit = 15;
        var from = (lastIndex - limit) < 0 ? 0 : lastIndex - limit;

        for (int i = from; i <= lastIndex; i++)
        {
            indexes.Add(new BigInteger(i));
        }

        return indexes;
    }

    public static BigInteger GetAcceptablePrice(decimal price, bool isLong)
    {
        decimal priceBasisPoints;
        var basisPointDivisor = 10000m;
        var allowedSlippage = 34m;
        var toDecimal = 30;

        if (isLong)
        {
            priceBasisPoints = basisPointDivisor - allowedSlippage;
        }
        else
        {
            priceBasisPoints = basisPointDivisor + allowedSlippage;
        }
        var test = Web3.Convert.ToWei(price, toDecimal) * new BigInteger(priceBasisPoints);

        var priceLimit = test / Web3.Convert.ToWei(basisPointDivisor, 0);

        return priceLimit;
    }

    internal static BigInteger? GetGasLimit()
    {
        throw new NotImplementedException();
    }

    internal static List<Trade> Map(List<GmxOrder> orders, Ticker ticker)
    {
        return orders.ConvertAll(order => Map(order, ticker));

        }
    private static Trade Map(GmxOrder order, Ticker ticker)
    {
        var trade = new Trade(DateTime.UtcNow, 
            order.IsLong ? TradeDirection.Short : TradeDirection.Long, 
            TradeStatus.Requested, 
            GetTradeType(order.IsLong, order.TriggerAboveThreshold), 
            ticker,
            Convert.ToDecimal(order.SizeDelta),
            Convert.ToDecimal(order.TriggerPrice), 
            null,
            "", ""
            );

        return trade;
    }

    public static bool GetTriggerAboveThreshold(bool isLong, TradeType tradeType)
    {
        if ((isLong && tradeType == TradeType.TakeProfit) ||
            (!isLong && tradeType == TradeType.StopLoss))
        {
            return true;
        }

        return false;
    }

    public static TradeType GetTradeType(bool isLong, bool isAboveThreshold)
    {
        if ((isLong && isAboveThreshold) ||
            (!isLong && !isAboveThreshold))
        {
            return TradeType.TakeProfit;
        }

        return TradeType.StopLoss;
    }

    internal static string GeTimeframe(Timeframe timeframe)
    {
        return timeframe switch
        {
            Timeframe.FiveMinutes => "5m",
            Timeframe.FifteenMinutes => "15m",
            Timeframe.ThirtyMinutes => "30m",
            Timeframe.OneHour => "1h",
            Timeframe.FourHour => "4h",
            Timeframe.OneDay => "1d",
            _ => throw new NotImplementedException(),
        };
    }
}