//+------------------------------------------------------------------+
//|                                                       baiso1.mq4 |
//|                        Copyright 2016, MetaQuotes Software Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2016, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
// NOI KHAI BAO BIEN


      extern double khoiLuong= 0.01;// 0       
      double stoploss = 0;
      double takeprofit = 0;
      extern  string ghichu =  "hello";
      color maucualenh = clrRed;
      extern int loaiLenh = OP_BUY; 
      double giavaolenh=0; 
      datetime thoigiangiaodich;
      bool chophepGD = true;
//+------------------------------------------------------------------+
int OnInit()
  {
//---
   checkLisicen();
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |

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

//khai báo hàm ở đây
//+------------------------------------------------------------------+
void OnTick()
  {
//--- 
    /*  tinhlotsize();
      checkDKvaolenh();
      dinhdangLot();
      vaolenh();*/
      
      if(chophepGD == false){return;}
      if(OrdersTotal()>0){return;}  // chi cho vao 1 lenh
    //  if(iTime(Symbol(),15,0) == thoigiangiaodich){return;}  thoigiangiaodich = iTime(Symbol(),15,0);
 
      if( Close[1]>Open[1] ){ loaiLenh = OP_BUY; }
       if(Close[1]<Open[1] ){     loaiLenh= OP_SELL; }
    
      if(loaiLenh == OP_SELL)
      { 
         giavaolenh = Bid;
         stoploss = giavaolenh + 20*10*Point();
         takeprofit = giavaolenh - 60*10*Point();
      }
      if(loaiLenh ==OP_BUY)
      {
         giavaolenh = Ask;
         stoploss = giavaolenh - 20*10*Point();
         takeprofit = giavaolenh + 60*10*Point();
      }
   
      khoiLuong = dinhdangLot();
                     
      OrderSend(  Symbol(),loaiLenh,khoiLuong,giavaolenh,20,stoploss,takeprofit,ghichu,0,0,maucualenh );
  }
//+------------------------------------------------------------------+

double dinhdangLot()
{
   if(khoiLuong==0){ khoiLuong = MarketInfo(Symbol(),MODE_MINLOT)   ; }
   if(khoiLuong> MarketInfo(Symbol(),MODE_MAXLOT)){ khoiLuong = MarketInfo(Symbol(),MODE_MAXLOT)   ; }
    
    khoiLuong = NormalizeDouble(khoiLuong,2);
  //  bằng 0 --> lot nhỏ nhất chấp nhận 0.01    0.001  0.1
    
    //9000 lot --> 50 lot  sô lot lớn nhất dc chấp nhận.
    
    //0.014875  -->  0.01 0.02
     
     return(khoiLuong);// tra ve khoi da duoc dinh dang
     
}

//======================================================
void checkLisicen()
{
   
   if(AccountNumber() != 22629828 ){Alert("khong dung tai khoan");chophepGD= false;}
   
   if(AccountEquity()  < 1000 ){ Comment("tai khoan qua nho , rui ro cao"); }
   
   if(IsTradeAllowed() ==false   ){ Alert("hay click vao trade allow");}
   
}
//==========================================