using cAlgo.API;
using cAlgo.API.Internals;
using System;

//===========================================================================================================================================
//      ClickEntry
//===========================================================================================================================================
namespace cAlgo.Robots {
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class ClickEntry : Robot {
        // --- min lots
        [Parameter("Min Lots", DefaultValue = 0.01, MinValue = 0.01, Step = 0.1)]
        public double MinLots { get; set; }

        // --- max lots
        [Parameter("Max Lots", DefaultValue = 100, MinValue = 0.01, Step = 0.1)]
        public double MaxLots { get; set; }

        // --- risk%
        [Parameter("Risk Percnet", DefaultValue = 0.5, MinValue = 0.001, MaxValue = 20, Step = 0.1)]
        public double RiskPercent { get; set; }

        // --- risk amount
        [Parameter("Risk Amount", DefaultValue = 1000, MinValue = 1,  Step = 0.5)]
        public double RiskAmount { get; set; }

        // --- RRR
        [Parameter("Risk Reward Ratio", DefaultValue = 2, MinValue = 0.01)]
        public double RiskRewardRatio { get; set; }

        //---------
        // OnStart
        protected override void OnStart() {
            var sltpSetter = new ClickEntrySupport(Chart, RiskRewardRatio);
            sltpSetter.Fixed += (obj, args) => Order(args.StopLoss, args.TakeProfit);
        }

        //--------
        // order
        private void Order(double stopPrice, double limitPrice) {
            TradeType tt = (stopPrice < limitPrice ? TradeType.Buy : TradeType.Sell);
            var price = (tt == TradeType.Buy ? Ask : Bid);
            var digit = (int)(Math.Log10(Symbol.PipSize) - Math.Log10(Symbol.TickSize));
            var stopPips = Math.Round(Math.Abs(price - stopPrice) / Symbol.PipSize, digit);
            var limitPips = Math.Round(Math.Abs(price - limitPrice) / Symbol.PipSize, digit);

            // --- calc volume
            var permitalbleLoss = Math.Min((Account.Balance) * RiskPercent / 100, RiskAmount);
            var volume = permitalbleLoss / stopPips / Symbol.PipValue;
            volume = Symbol.NormalizeVolumeInUnits(volume);
            if (volume < Symbol.QuantityToVolumeInUnits(MinLots)) volume = Symbol.QuantityToVolumeInUnits(MinLots);
            if (volume > Symbol.QuantityToVolumeInUnits(MaxLots)) volume = Symbol.QuantityToVolumeInUnits(MaxLots);

            // --- order
            var res = ExecuteMarketOrder(tt, SymbolName, volume, ToString(), stopPips, limitPips);
            if (!res.IsSuccessful) {
                Print(res.Error.ToString());
            }

            // --- stop
            Stop();
        }
    }
    //==================================================
    // ClickEntrySupport
    //  for decide SL and TP at intaractive
    //==================================================
    internal class ClickEntrySupport :IDisposable {
        public event EventHandler<PriceFixecEventArgs> Fixed;
        public double RiskRewardRatio { get; set; }

        private Point _mouseDown = new Point(0, 0);
        private ChartHorizontalLine _stopLine;
        private ChartHorizontalLine _limitLine;
        private const string STOP_LINE_NAME = "EasyEntryStopLine";
        private const string LIMIT_LINE_NAME = "EasyEntryLimitLine";
        private Chart _chart;

        public ClickEntrySupport(Chart chart, double riskRewardRatio) {
            RiskRewardRatio = riskRewardRatio;
            _chart = chart;

            _stopLine = _chart.DrawHorizontalLine(STOP_LINE_NAME, 0, Color.Red, 1, LineStyle.Dots);
            _limitLine = _chart.DrawHorizontalLine(LIMIT_LINE_NAME, 0, Color.Green, 1, LineStyle.Dots);
            _chart.MouseMove += OnMove;
            _chart.MouseDown += OnDown;
            _chart.MouseUp += OnUp;
        }

        //----------
        // Dispose
        public void Dispose() {
            _chart.RemoveObject(_stopLine.Name);
            _chart.RemoveObject(_limitLine.Name);
            _chart.MouseUp -= OnUp;
            _chart.MouseDown -= OnDown;
            _chart.MouseMove -= OnMove;
        }

        //-----------
        // for event
        private void OnUp(ChartMouseEventArgs args) {
            if (_mouseDown == new Point(args.MouseX, args.MouseY)) {
                Fixed(this, new PriceFixecEventArgs(_stopLine.Y, _limitLine.Y));
                Dispose();
            }
        }
        private void OnDown(ChartMouseEventArgs args) {
            _mouseDown = new Point(args.MouseX, args.MouseY);
        }
        private void OnMove(ChartMouseEventArgs args) {
            _stopLine.Y = args.YValue;
            var bid = _chart.Bars.LastBar.Close;
            _limitLine.Y = bid + (bid - args.YValue) * RiskRewardRatio;
        }
    }
    //============
    // EventArgs
    //============
    internal class PriceFixecEventArgs : EventArgs {
        public double StopLoss, TakeProfit;
        public PriceFixecEventArgs(double sl, double tp) { StopLoss = sl; TakeProfit = tp; }
    }
}