line_level_ea_mt5/line_level_ea.mq5

//+------------------------------------------------------------------+
//|                                                line_level_ea.mq5 |
//|                                  Copyright 2025, MQL Development |
//|                                  https://www.mqldevelopment.com/ |
//+------------------------------------------------------------------+
#property copyright "Copyright 2025, MQL Development"
#property link      "https://www.mqldevelopment.com/"
#property version   "1.00"
#include <Trade\Trade.mqh>
CTrade  trade;

enum tradeType
  {
   buyTrades,   // Buy
   sellTrades,  // Sell
  };

input        string                  string_0                   = "<><><><><><> General SETTINGS <><><><><><>";   //__
input        int                     magic_no                   = 333;             // Magic no
input        tradeType               selectSide                 = buyTrades;       // Select Side
input        double                  lot_size                   = 0.1;             // Lot Size
input        double                  lot_multiplier             = 2;               // Lot Multiplier on Loss Trade
input        double                  levels_distence            = 10;              // Levels Distance in Dollars
input        double                  stoploss                   = 10;              // Fixed Stop Loss in Pips
input        double                  takeprofit                 = 10;              // Fixed Take Profit in Pips
input        bool                    countinueCycleAfterProfit  = true;            // Continue Trading After Profit

input        string                  time_setting               = "<><><><><> Time Filter Settings <><><><><>";             //_
input        bool                    EnableTimeFilter           = false;           // Enable Time Filter
input        string                  startTime                  = "03:00";         // Start Time Session
input        string                  endTime                    = "09:00";         // End Time Session

// Global Variables
double above_level = 0, below_level = 0;
static double tickCurrentBid = 0, tickCurrentAsk = 0;
double tickPreviousBid = 0, tickPreviousAsk = 0;
datetime  startTradingTime = 0, endTradingTime = 0;
string sep  =  ":";                // A separator as a character
ushort u_sep;                      // The code of the separator character
string result1[];
datetime ea_start_time = 0;
bool tradeNow = true;
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
//---
// Fill Values above and below levels
   trade.SetExpertMagicNumber(magic_no);
   trade.SetDeviationInPoints(10);
   trade.SetTypeFilling(ORDER_FILLING_IOC);
   trade.LogLevel(LOG_LEVEL_ALL);
   trade.SetAsyncMode(false);
   ea_start_time = TimeCurrent();
   double currentPrice = iClose(Symbol(), PERIOD_CURRENT, 0);
   getNearestLevels(currentPrice, levels_distence, below_level, above_level);

//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---

  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
//---
   double Ask = SymbolInfoDouble(Symbol(),SYMBOL_ASK);
   double Bid = SymbolInfoDouble(Symbol(),SYMBOL_BID);
   tickPreviousBid = tickCurrentBid;
   tickCurrentBid = Bid;
   tickPreviousAsk = tickCurrentAsk;
   tickCurrentAsk = Ask;
   timeConversion();
// Comment(" Below Value is: ", below_level, " Above Value: ",  above_level, " Previous Tick: ", tickPreviousAsk, " Tick Current Ask: ", tickCurrentAsk);
   double lastLot = 0;
   if(!countinueCycleAfterProfit)
      if(selectLatestTicket(lastLot) > 0)
        {
         tradeNow = false;
        }
   if(tradeNow)
      if((EnableTimeFilter && TimeCurrent() >= startTradingTime && TimeCurrent() < endTradingTime) ||  !EnableTimeFilter)
        {
         if(above_level == 0 && below_level == 0)
           {
            double currentPrice = iClose(Symbol(), PERIOD_CURRENT, 0);
            getNearestLevels(currentPrice, levels_distence, below_level, above_level);
            Print(" Price Levels Updated on New Session Start. ");
           }
         if(selectSide == buyTrades)  // Buy trade case
           {
            if(((tickPreviousAsk < above_level) && (tickCurrentAsk >= above_level)) ||
               ((tickPreviousAsk > below_level) && (tickCurrentAsk <= below_level)))
              {
               placeBuyTrade();
               Print(" ----------------------------- Buy Trade Executed and Levels Updated -----------------------------------------------------");

               double currentPrice = 0;
               if((tickPreviousAsk < above_level) && (tickCurrentAsk >= above_level))
                 {
                  currentPrice = above_level;
                 }
               else
                  if(((tickPreviousAsk > below_level) && (tickCurrentAsk <= below_level)))
                    {
                     currentPrice = below_level;
                    }
               getNearestLevels(currentPrice, levels_distence, below_level, above_level);

               Print(" Current Price: ", currentPrice, " Below Value is: ", below_level, " Above Value: ", above_level);
              }
           }
         if(selectSide == sellTrades)
           {
            if(((tickPreviousBid < above_level) && (tickCurrentBid >= above_level)) ||
               ((tickPreviousBid > below_level) && (tickCurrentBid <= below_level)))
              {
               placeSellTrade();
               Print(" ----------------------------- Sell Trade Executed and Levels Updated -----------------------------------------------------");

               double currentPrice = 0;
               if((tickPreviousBid < above_level) && (tickCurrentBid >= above_level))
                 {
                  currentPrice = above_level;
                 }
               else
                  if(((tickPreviousBid > below_level) && (tickCurrentBid <= below_level)))
                    {
                     currentPrice = below_level;
                    }
               getNearestLevels(currentPrice, levels_distence, below_level, above_level);

               Print(" Current Price: ", currentPrice, " Below Value: ", below_level, " Above Value: ", above_level);
              }
           }
        }
      else
        {
         below_level = 0;
         above_level = 0;
        }
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
double calculateBaseLevel(double price, double step)
  {
   return step * MathFloor(price / step);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void getNearestLevels(double currentPrice, double step,
                      double &LowerLevel, double &UpperLevel)
  {
   double epsilon = 0.000001;
// Compute the anchor as the nearest multiple of step.
   double anchor = MathRound(currentPrice / step) * step;
   double diff = fabs(currentPrice - anchor);

// If currentPrice exactly equals the anchor, use symmetric levels.
   if(diff < epsilon)
     {
      LowerLevel = anchor - step;
      UpperLevel = anchor + step;
      return;
     }

// Special handling for step == 10: use non–symmetric levels.
   if(step == 10)
     {
      if(currentPrice > anchor)
        {
         LowerLevel = anchor;
         UpperLevel = anchor + step;
        }
      else  // currentPrice < anchor
        {
         LowerLevel = anchor - step;
         UpperLevel = anchor;
        }
      return;
     }

// For all other steps, use the ratio threshold logic.
   double ratio = diff / step;
   double threshold = 0.45;  // Adjusted threshold

   if(currentPrice > anchor)
     {
      if(ratio > threshold)
        {
         LowerLevel = anchor - step;
         UpperLevel = anchor + step;
        }
      else
        {
         LowerLevel = anchor;
         UpperLevel = anchor + step;
        }
     }
   else // currentPrice < anchor
     {
      if(ratio > threshold)
        {
         LowerLevel = anchor - step;
         UpperLevel = anchor + step;
        }
      else
        {
         LowerLevel = anchor - step;
         UpperLevel = anchor;
        }
     }
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void placeBuyTrade()
  {

   double buySL = 0, buyTp=0;
//openPrice = SymbolInfoDouble(Symbol(),SYMBOL_ASK);
   double Ask = SymbolInfoDouble(Symbol(),SYMBOL_ASK);
   double Bid = SymbolInfoDouble(Symbol(),SYMBOL_BID);

   if(stoploss != 0)
     {
      buySL = Ask - (stoploss * 10 * Point());
     }
   if(takeprofit != 0)
     {
      buyTp = Ask + (takeprofit * 10 * Point());
     }
   double lot = 0;
   double lastLot = 0;
   if(selectLatestTicket(lastLot) < 0)
     {
      lot = lastLot * lot_multiplier;
     }
   else
     {
      lot = lot_size;
     }
   if(trade.PositionOpen(Symbol(),ORDER_TYPE_BUY,NormalizeDouble(lot, 2),Ask,buySL,buyTp,"Buy Trade Placed"))
     {
      Print("Buy Trade Placed: ",trade.ResultOrder());
     }
   else
     {
      Print("Error in placing Buy: "+Symbol()+"  ",GetLastError());
     }
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void placeSellTrade()
  {

   double sellSL = 0, sellTp = 0;
//openPrice = SymbolInfoDouble(Symbol(),SYMBOL_BID);
   double Ask = SymbolInfoDouble(Symbol(),SYMBOL_ASK);
   double Bid = SymbolInfoDouble(Symbol(),SYMBOL_BID);

   if(stoploss != 0)
     {
      sellSL = Bid + (stoploss * 10 * Point());
     }
   if(takeprofit != 0)
     {
      sellTp = Bid - (takeprofit * 10 * Point());
     }
   double lot = 0;
   double lastLot = 0;
   if(selectLatestTicket(lastLot) < 0)
     {
      lot = lastLot * lot_multiplier;
     }
   else
     {
      lot = lot_size;
     }
   if(trade.PositionOpen(Symbol(),ORDER_TYPE_SELL,NormalizeDouble(lot, 2),Bid,sellSL,sellTp,"Sell Trade Placed"))
     {
      Print("Sell Trade PLaced: ",trade.ResultOrder());
     }
   else
     {
      Print("Error in placing Sell: "+Symbol()+"  ",GetLastError());
     }

  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void timeConversion()
  {
   MqlDateTime date, date1;

   TimeToStruct(iTime(Symbol(),PERIOD_CURRENT,0),date);
   u_sep=StringGetCharacter(sep,0);
   StringSplit(startTime,u_sep,result1);
   date.hour = (int)StringToInteger(result1[0]);
   date.min = (int)StringToInteger(result1[1]);
   startTradingTime = StructToTime(date);

   TimeToStruct(iTime(Symbol(),PERIOD_CURRENT,0),date1);
   StringSplit(endTime,u_sep,result1);
   date.hour = (int)StringToInteger(result1[0]);
   date.min = (int)StringToInteger(result1[1]);
   endTradingTime = StructToTime(date);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
double selectLatestTicket(double &lastOrderLot)
  {

   int count = 0;
   ulong ticket_deal_Out=0, ticket_deal_In = 0;
   datetime latestCloseTime = 0;
   double orderProfit = 0;
   ulong latestTicket = 0;
   if(HistorySelect(ea_start_time, TimeCurrent()))
     {
      int total = HistoryDealsTotal();
      for(int i = total-1; i >= 0 ; i--)
        {
         ticket_deal_Out = HistoryDealGetTicket(i);
         if((HistoryDealGetInteger(ticket_deal_Out,DEAL_MAGIC) == magic_no) && HistoryDealGetInteger(ticket_deal_Out,DEAL_ENTRY) == DEAL_ENTRY_OUT
            && HistoryDealGetString(ticket_deal_Out,DEAL_SYMBOL) == Symbol()) // here is the problem solved after break
           {
            datetime orderCloseTime = (datetime) HistoryDealGetInteger(ticket_deal_Out, DEAL_TIME);
            if(orderCloseTime > latestCloseTime)
              {
               latestCloseTime = (datetime) HistoryDealGetInteger(ticket_deal_Out, DEAL_TIME);
               orderProfit = HistoryDealGetDouble(ticket_deal_Out, DEAL_PROFIT);
               latestTicket = ticket_deal_Out;
               lastOrderLot = HistoryDealGetDouble(ticket_deal_Out, DEAL_VOLUME);
               // Print(" Last order Lot: ", lastOrderLot);
              }
           }
        }
     }
// Print(" Latest Selected Ticket: ", latestTicket, " Order Close Time: ", latestCloseTime, " Ticket Profit: ", orderProfit);

   return orderProfit;
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+