//+------------------------------------------------------------------+
//|                                           Strategy: Paulo BB.mq5 |
//|                                                      Paulo Souza |
//|           https://www.pensador.com/frases_de_buda_inspiracionais/|
//+------------------------------------------------------------------+
#property copyright "CopyRights para Katie EA"
#property link      ""
#property version   "3.00"
#property description "Alvos definidos para 35pts(gain) 60pts(loss), alterar esses dados pode implicar na perca de capital."
#property description "................n é precisa entrar para historia para fazer um mundo melhor........................."


int LotDigits; //initialized in OnInit
int NextOpenTradeAfterBars = 10; //next open trade after time
datetime LastTradeTime = 0;
input int Começar_apartir_de_hora = 12; //time of the day
input int Começar_apartir_de_Minuto = 00; //time of the day
input int Terminar_Hora = 16; //time of the day
input int TOD_To_Min = 15; //time of the day
input double Numero_Contratos = 1;
int MaxSlippage = 3; //adjusted in OnInit
int MaxSlippage_;
bool crossed[2]; //initialized to true, used in function Cross
bool Audible_Alerts = true;
int MaxOpenTrades = 1;
int MaxLongTrades = 1000;
int MaxShortTrades = 1000;
int MaxPendingOrders = 1000;
bool Hedging = false;
int OrderRetry = 5; //# of retries if sending order returns error
int OrderWait = 5; //# of seconds to wait if sending order returns error
int Bands_handle;
double Bands_Upper[];

bool inTimeInterval(datetime t, int TOD_From_Hour, int TOD_From_Min, int TOD_To_Hour, int TOD_To_Min)
  {
   string TOD = TimeToString(t, TIME_MINUTES);
   string TOD_From = StringFormat("%02d", TOD_From_Hour)+":"+StringFormat("%02d", TOD_From_Min);
   string TOD_To = StringFormat("%02d", TOD_To_Hour)+":"+StringFormat("%02d", TOD_To_Min);
   return((StringCompare(TOD, TOD_From) >= 0 && StringCompare(TOD, TOD_To) <= 0)
     || (StringCompare(TOD_From, TOD_To) > 0
       && ((StringCompare(TOD, TOD_From) >= 0 && StringCompare(TOD, "23:59") <= 0)
         || (StringCompare(TOD, "00:00") >= 0 && StringCompare(TOD, TOD_To) <= 0))));
  }

bool Cross(int i, bool condition) //returns true if "condition" is true and was false in the previous call
  {
   bool ret = condition && !crossed[i];
   crossed[i] = condition;
   return(ret);
  }

void myAlert(string type, string message)
  {
   if(type == "print")
      Print(message);
   else if(type == "error")
     {
      Print(type+" | katie Scalper M-Indice 2018 @ "+Symbol()+","+Period()+" | "+message);
     }
   else if(type == "order")
     {
      Print(type+" | katie Scalper M-Indice 2018 @ "+Symbol()+","+Period()+" | "+message);
      if(Audible_Alerts) Alert(type+" | katie Scalper M-Indice 2018 @ "+Symbol()+","+Period()+" | "+message);
     }
   else if(type == "modify")
     {
     }
  }

int TradesCount(ENUM_ORDER_TYPE type) //returns # of open trades for order type, current symbol and magic number
  {
   if(type <= 1)
     {
      if (PositionSelect(Symbol()) && PositionGetInteger(POSITION_MAGIC) == Numero_Magico && PositionGetInteger(POSITION_TYPE) == type)
         return(1);
      else
         return(0);
     }
   else
     {
      int result = 0;
      int total = OrdersTotal();
      for(int i = 0; i < total; i++)
        {
         if(OrderGetTicket(i) <= 0) continue;
         if(OrderGetInteger(ORDER_MAGIC) != Numero_Magico || OrderGetString(ORDER_SYMBOL) != Symbol() || OrderGetInteger(ORDER_TYPE) != type) continue;
         result++;
        }
      return(result);
     }
  }

ulong myOrderSend(ENUM_ORDER_TYPE type, double price, double volume, string ordername) //send order, return ticket ("price" is irrelevant for market orders)
  {
   if(!TerminalInfoInteger(TERMINAL_TRADE_ALLOWED) || !MQLInfoInteger(MQL_TRADE_ALLOWED)) return(0);
   int retries = 0;
   int long_trades = TradesCount(ORDER_TYPE_BUY);
   int short_trades = TradesCount(ORDER_TYPE_SELL);
   int long_pending = TradesCount(ORDER_TYPE_BUY_LIMIT) + TradesCount(ORDER_TYPE_BUY_STOP) + TradesCount(ORDER_TYPE_BUY_STOP_LIMIT);
   int short_pending = TradesCount(ORDER_TYPE_SELL_LIMIT) + TradesCount(ORDER_TYPE_SELL_STOP) + TradesCount(ORDER_TYPE_SELL_STOP_LIMIT);
   string ordername_ = ordername;
   if(ordername != "")
      ordername_ = "("+ordername+")";
   //test Hedging
   if(!Hedging && ((type % 2 == 0 && short_trades + short_pending > 0) || (type % 2 == 1 && long_trades + long_pending > 0)))
     {
      myAlert("print", "Order"+ordername_+" not sent, hedging not allowed");
      return(0);
     }
   //test maximum trades
   if((type % 2 == 0 && long_trades >= MaxLongTrades)
   || (type % 2 == 1 && short_trades >= MaxShortTrades)
   || (long_trades + short_trades >= MaxOpenTrades)
   || (type > 1 && long_pending + short_pending >= MaxPendingOrders))
     {
      myAlert("print", "Order"+ordername_+" not sent, maximum reached");
      return(0);
     }
   //prepare to send order
   MqlTradeRequest request;
   ZeroMemory(request);
   request.action = (type <= 1) ? TRADE_ACTION_DEAL : TRADE_ACTION_PENDING;
   
   //set allowed filling type
   int filling = (int)SymbolInfoInteger(Symbol(),SYMBOL_FILLING_MODE);
   if(request.action == TRADE_ACTION_DEAL && (filling & 1) != 1)
      request.type_filling = ORDER_FILLING_IOC;

   request.magic = Numero_Magico;
   request.symbol = Symbol();
   request.volume = NormalizeDouble(volume, LotDigits);
   request.sl = 0;
   request.tp = 0;
   request.deviation = MaxSlippage_;
   request.type = type;
   request.comment = ordername;

   int expiration=(int)SymbolInfoInteger(Symbol(), SYMBOL_EXPIRATION_MODE);
   if((expiration & SYMBOL_EXPIRATION_GTC) != SYMBOL_EXPIRATION_GTC)
     {
      request.type_time = ORDER_TIME_DAY;  
      request.type_filling = ORDER_FILLING_RETURN;
     }

   MqlTradeResult result;
   ZeroMemory(result);
   while(!OrderSuccess(result.retcode) && retries < OrderRetry+1)
     {
      //refresh price before sending order
      MqlTick last_tick;
      SymbolInfoTick(Symbol(), last_tick);
      if(type == ORDER_TYPE_BUY)
         price = last_tick.ask;
      else if(type == ORDER_TYPE_SELL)
         price = last_tick.bid;
      else if(price < 0) //invalid price for pending order
        {
         myAlert("order", "Order"+ordername_+" not sent, invalid price for pending order");
	      return(0);
        }
      request.price = NormalizeDouble(price, Digits());     
      OrderSend(request, result);
      if(!OrderSuccess(result.retcode))
        {
         myAlert("print", "OrderSend"+ordername_+" error: "+result.comment);
         Sleep(OrderWait*1000);
        }
      retries++;
     }
   if(!OrderSuccess(result.retcode))
     {
      myAlert("error", "OrderSend"+ordername_+" failed "+(OrderRetry+1)+" times; error: "+result.comment);
      return(0);
     }
   string typestr[8] = {"Buy", "Sell", "Buy Limit", "Sell Limit", "Buy Stop", "Sell Stop", "Buy Stop Limit", "Sell Stop Limit"};
   myAlert("order", "Order sent"+ordername_+": "+typestr[type]+" "+Symbol()+" Magic #"+Numero_Magico);
   return(result.order);
  }

int myOrderModifyRel(ENUM_ORDER_TYPE type, ulong ticket, double SL, double TP) //works for positions and orders, modify SL and TP (relative to open price), zero targets do not modify, ticket is irrelevant for open positions
  {
   if(!TerminalInfoInteger(TERMINAL_TRADE_ALLOWED) || !MQLInfoInteger(MQL_TRADE_ALLOWED)) return(-1);
   int retries = 0;
   int err;
   SL = NormalizeDouble(SL, Digits());
   TP = NormalizeDouble(TP, Digits());
   if(SL < 0) SL = 0;
   if(TP < 0) TP = 0;
   //prepare to select order
   if((type <= 1 && !PositionSelect(Symbol())) || (type > 1 && !OrderSelect(ticket)))
     {
      err = GetLastError();
      myAlert("error", "PositionSelect / OrderSelect failed; error #"+err);
      return(-1);
     }
   //ignore open positions other than "type"
   if (type <= 1 && PositionGetInteger(POSITION_TYPE) != type) return(0);
   //prepare to modify order, convert relative to absolute
   double openprice = (type <= 1) ? PositionGetDouble(POSITION_PRICE_OPEN) : OrderGetDouble(ORDER_PRICE_OPEN);
   if(((type <= 1) ? PositionGetInteger(POSITION_TYPE) : OrderGetInteger(ORDER_TYPE)) % 2 == 0) //buy
     {
      if(NormalizeDouble(SL, Digits()) != 0)
         SL = openprice - SL;
      if(NormalizeDouble(TP, Digits()) != 0)
         TP = openprice + TP;
     }
   else //sell
     {
      if(NormalizeDouble(SL, Digits()) != 0)
         SL = openprice + SL;
      if(NormalizeDouble(TP, Digits()) != 0)
         TP = openprice - TP;
     }
   double currentSL = (type <= 1) ? PositionGetDouble(POSITION_SL) : OrderGetDouble(ORDER_SL);
   double currentTP = (type <= 1) ? PositionGetDouble(POSITION_TP) : OrderGetDouble(ORDER_TP);
   if(NormalizeDouble(SL, Digits()) == 0) SL = currentSL; //not to modify
   if(NormalizeDouble(TP, Digits()) == 0) TP = currentTP; //not to modify
   if(NormalizeDouble(SL - currentSL, Digits()) == 0
   && NormalizeDouble(TP - currentTP, Digits()) == 0)
      return(0); //nothing to do
   MqlTradeRequest request;
   ZeroMemory(request);
   request.action = (type <= 1) ? TRADE_ACTION_SLTP : TRADE_ACTION_MODIFY;
   if (type > 1)
      request.order = ticket;
   else
      request.position = PositionGetInteger(POSITION_TICKET);
   request.symbol = Symbol();
   request.price = (type <= 1) ? PositionGetDouble(POSITION_PRICE_OPEN) : OrderGetDouble(ORDER_PRICE_OPEN);
   request.sl = NormalizeDouble(SL, Digits());
   request.tp = NormalizeDouble(TP, Digits());
   request.deviation = MaxSlippage_;
   MqlTradeResult result;
   ZeroMemory(result);
   while(!OrderSuccess(result.retcode) && retries < OrderRetry+1)
     {
      OrderSend(request, result);
      if(!OrderSuccess(result.retcode))
        {
         err = GetLastError();
         myAlert("print", "OrderModify error #"+err);
         Sleep(OrderWait*1000);
        }
      retries++;
     }
   if(!OrderSuccess(result.retcode))
     {
      myAlert("error", "OrderModify failed "+(OrderRetry+1)+" times; error #"+err);
      return(-1);
     }
   string alertstr = "Order modify: ticket="+ticket;
   if(NormalizeDouble(SL, Digits()) != 0) alertstr = alertstr+" SL="+SL;
   if(NormalizeDouble(TP, Digits()) != 0) alertstr = alertstr+" TP="+TP;
   myAlert("modify", alertstr);
   return(0);
  }

bool OrderSuccess(uint retcode)
  {
   return(retcode == TRADE_RETCODE_PLACED || retcode == TRADE_RETCODE_DONE
      || retcode == TRADE_RETCODE_DONE_PARTIAL || retcode == TRADE_RETCODE_NO_CHANGES);
  }

double getBid()
  {
   MqlTick last_tick;
   SymbolInfoTick(Symbol(), last_tick);
   return(last_tick.bid);
  }

//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  
   {
    bool     prototipo=true;               // true só roda em demo, false conta real
   long         account=0;                 // Account login
   long     periodo_licenca=60;           // Qtd dias licença
   
   datetime dt_expiracao=__DATE__+PeriodSeconds(PERIOD_D1)*periodo_licenca;                   // Data de expiração

   ENUM_ACCOUNT_TRADE_MODE tradeMode=(ENUM_ACCOUNT_TRADE_MODE)AccountInfoInteger(ACCOUNT_TRADE_MODE);

   if(prototipo)
     {
      if(tradeMode==ACCOUNT_TRADE_MODE_REAL)
        {
         Alert(__FUNCTION__,": Licença somente para conta DEMO");
         return(INIT_FAILED);
        }
      dt_expiracao=__DATE__+PeriodSeconds(PERIOD_D1)*60; // Expira 60 dias após a compilação
      if(TimeCurrent()>dt_expiracao)
        {
         Alert(__FUNCTION__,": licença DEMO expirada");
         return(INIT_FAILED);
        }
     }

   if(!prototipo)
     {
      if(AccountInfoInteger(ACCOUNT_LOGIN)!=account)
        {
         Alert(__FUNCTION__,": Sua conta não esta aurotizada");
         return(INIT_FAILED);
        }
      if(TimeCurrent()>dt_expiracao)
        {
         Alert(__FUNCTION__,": Licença expirada");
         return(INIT_FAILED);
        }
  }
   
  
   MaxSlippage_ = MaxSlippage;
   //initialize LotDigits
   double LotStep = SymbolInfoDouble(Symbol(), SYMBOL_VOLUME_STEP);
   if(LotStep >= 1) LotDigits = 0;
   else if(LotStep >= 0.1) LotDigits = 1;
   else if(LotStep >= 0.01) LotDigits = 2;
   else LotDigits = 3;
   LastTradeTime = 0;
   int i;
   //initialize crossed
   for (i = 0; i < ArraySize(crossed); i++)
      crossed[i] = true;
   Bands_handle = iBands(NULL, PERIOD_CURRENT, 14, 0, 1, PRICE_CLOSE);
   if(Bands_handle < 0)
     {
      Print("The creation of iBands has failed: Bands_handle=", INVALID_HANDLE);
      Print("Runtime error = ", GetLastError());
      return(INIT_FAILED);
     }
   
   return(INIT_SUCCEEDED);
  }

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

//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
   ulong ticket = 0;
   double price;   
   double SL;
   double TP;
   
   if(CopyBuffer(Bands_handle, UPPER_BAND, 0, 200, Bands_Upper) <= 0) return;
   ArraySetAsSeries(Bands_Upper, true);
   
   //Open Buy Order (Katie Esta Comprando), instant signal is tested first
   if(Cross(0, getBid() > Bands_Upper[0]) //Price crosses above Bollinger Bands
   )
     {
      MqlTick last_tick;
      SymbolInfoTick(Symbol(), last_tick);
      price = last_tick.ask;
      SL = 60 * Point(); //Stop Loss = value in points (relative to price)
      TP = 35 * Point(); //Take Profit = value in points (relative to price)
      if(TimeCurrent() - LastTradeTime < NextOpenTradeAfterBars * PeriodSeconds()) return; //next open trade after time
      if(!inTimeInterval(TimeCurrent(), Começar_apartir_de_hora, Começar_apartir_de_Minuto, Terminar_Hora, TOD_To_Min)) return; //open trades only at specific times of the day   
      if(TerminalInfoInteger(TERMINAL_TRADE_ALLOWED) && MQLInfoInteger(MQL_TRADE_ALLOWED))
        {
         ticket = myOrderSend(ORDER_TYPE_BUY, price, Numero_Contratos, "Katie Esta Comprando");
         if(ticket == 0) return;
        }
      else //not autotrading => only send alert
         myAlert("order", "Katie Esta Comprando");
      LastTradeTime = TimeCurrent();
      myOrderModifyRel(ORDER_TYPE_BUY, ticket, 0, TP);
      myOrderModifyRel(ORDER_TYPE_BUY, ticket, SL, 0);
     }
   
   //Open Sell Order (Katie Esta Vendendo), instant signal is tested first
   if(Cross(1, getBid() < Bands_Upper[0]) //Price crosses below Bollinger Bands
   )
     {
      MqlTick last_tick;
      SymbolInfoTick(Symbol(), last_tick);
      price = last_tick.bid;
      SL = 60 * Point(); //Stop Loss = value in points (relative to price)
      TP = 35 * Point(); //Take Profit = value in points (relative to price)
      if(TimeCurrent() - LastTradeTime < NextOpenTradeAfterBars * PeriodSeconds()) return; //next open trade after time
      if(!inTimeInterval(TimeCurrent(), Começar_apartir_de_hora, Começar_apartir_de_Minuto, Terminar_Hora, TOD_To_Min)) return; //open trades only at specific times of the day   
      if(TerminalInfoInteger(TERMINAL_TRADE_ALLOWED) && MQLInfoInteger(MQL_TRADE_ALLOWED))
        {
         ticket = myOrderSend(ORDER_TYPE_SELL, price, Numero_Contratos, "Katie Esta Vendendo");
         if(ticket == 0) return;
        }
      else //not autotrading => only send alert
         myAlert("order", "Katie Esta Vendendo");
      LastTradeTime = TimeCurrent();
      myOrderModifyRel(ORDER_TYPE_SELL, ticket, 0, TP);
      myOrderModifyRel(ORDER_TYPE_SELL, ticket, SL, 0);
  
     }
  }