unit StrategyTest;

interface

uses
    Myc.Signals,
    Myc.Trade.Types,
    Myc.Trade.DataPoint,
    Myc.Trade.DataArray,
    Myc.DataRecord,
    Myc.Trade.Indicators;

function CreateStrategy1(Timeframe: TTimeframe): TConverter<TDataPoint<TOhlcItem>, Double>;

implementation

uses
    System.SysUtils,
    System.Math;

function CreateStrategy1(Timeframe: TTimeframe): TConverter<TDataPoint<TOhlcItem>, Double>;
type
    TSignal = record
        Sig: Double;
        SL: Double;
        Entry: Double;
        pnl: Double;
    end;
begin
    var ticker := TConverter.CreateIdentity<TDataPoint<TOhlcItem>>;

    var OhlcPoint := ticker.Chain<TDataPoint<TOhlcItem>>(TConverter.CreateOhlcAggregation(Timeframe));

    var Ohlc := OhlcPoint.Field<TOhlcItem>('Data');

    var Closes := Ohlc.Field<Double>('Close');

    var Hull := Closes.Chain<Double>(TIndicators.CreateHMA(250)).MakeParallel;
    var Sma := Closes.Chain<Double>(TIndicators.CreateSMA(200)).MakeParallel;

    var Lowest: Double := Double.MaxValue;
    var Highest: Double := Double.MinValue;

    var ATR := Ohlc.Chain<Double>(TIndicators.CreateATR(50)).MakeParallel;

    // next stage

    var ATREndPoint := TConverter.CreateEndpoint<Double>(ATR.Sender, 5);
    var ATRSeries: TSeries<Double>;

    var HullEndPoint := TConverter.CreateEndpoint<Double>(Hull.Sender, 5);
    var HullSeries: TSeries<Double>;

    var SmaEndPoint := TConverter.CreateEndpoint<Double>(Sma.Sender, 5);
    var SmaSeries: TSeries<Double>;

    var curr: TSignal;
    curr.SL := Double.NaN;
    curr.Entry := Double.NaN;

    var lastHull, lastSma: Double;

    var conv :=
        TConverter.Join<Double>(
            [Ohlc.Field<Double>('Low').Sender, Ohlc.Field<Double>('High').Sender, Closes.Sender, ATR.Sender, Hull.Sender, Sma.Sender]
        );

    var Signal :=
        TConverter<TArray<Double>, TSignal>.CreateGeneric(
            function(const Values: TArray<Double>): TSignal
            begin
                var low := Values[0];
                var high := Values[1];
                var close := Values[2];
                var atr := Values[3];
                var hull := Values[4];
                var sma := Values[5];

                if low < Lowest then
                    Lowest := low;
                if high > Highest then
                    Highest := high;

                Result := curr;
                Result.Sig := 0;
                var pnl: double := NaN;

                if (hull < sma) and (lastHull >= lastSma) then
                begin
                    if curr.Sig > 0 then
                        pnl := close - curr.Entry;

                    curr.Sig := -1;
                    curr.SL := Highest;
                    curr.Entry := close;
                    Result := curr;
                end
                else if (hull > sma) and (lastHull <= lastSma) then
                begin
                    if curr.Sig < 0 then
                        pnl := curr.Entry - close;

                    curr.Sig := 1;
                    curr.SL := Lowest;
                    curr.Entry := close;
                    Result := curr;
                end;

                atr := 15 * atr;
                if curr.Sig > 0 then
                begin
                    if close > curr.SL then
                    begin
                        if curr.SL < close - atr then
                            curr.SL := close - atr;
                        Result.SL := curr.SL;
                    end;

                    if low <= curr.SL then
                    begin
                        pnl := curr.SL - curr.Entry;
                        curr.Sig := 0;
                        Result.Sig := 0;
                        curr.SL := NaN;
                    end;
                end
                else if curr.Sig < 0 then
                begin
                    if close < curr.SL then
                    begin
                        if curr.SL > close + atr then
                            curr.SL := close + atr;
                        Result.SL := curr.SL;
                    end;

                    if high >= curr.SL then
                    begin
                        pnl := curr.Entry - curr.SL;
                        curr.Sig := 0;
                        Result.Sig := 0;
                        curr.SL := NaN;
                    end;
                end;

                if Result.Sig <> 0 then
                begin
                    Lowest := Double.MaxValue;
                    Highest := Double.MinValue;
                    Result.SL := Double.NaN;
                    Result.Entry := Double.NaN;
                end;

                Result.pnl := pnl;

                lastHull := hull;
                lastSma := sma;
            end
        );

    conv.Link(Signal);

    var pnl := Signal.Field<Double>('pnl');

    var FEquity: Double := 10000;
    var FInit: Boolean := false;

    var equity :=
        TConverter<Double, Double>.CreateAggregation(
            function(const Value: Double; const Broadcast: TConverter<Double, Double>.TBroadcastProc): TState
            begin
                if not FInit then
                begin
                    FInit := true;
                    Broadcast(FEquity);
                end;

                if not IsNan(Value) then
                begin
                    FEquity := FEquity + Value;
                    Result := Broadcast(FEquity);
                end;
            end
        );

    pnl.Sender.Link(equity);

    Result := TConverter<TDataPoint<TOhlcItem>, Double>.Construct(ticker, equity.Sender);
end;

end.