//+------------------------------------------------------------------+
//|                                                       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  magic =999;
//+------------------------------------------------------------------+
int OnInit()
  {
//---
  // checkLisicen();
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |

//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---
   
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
     // if(chophepGD == false){return;}
    //  if(OrdersTotal()>0){return;}  // chi cho vao 1 lenh
      
      if(demsolenh( Symbol() ) >0 ){return;}
      
// dieu kien vao lenh-------------- 
      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,magic,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);
     
     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");}
   
}
//==========================================
int demsolenh(string captiencandem)
{
   int dem;
   for(int i = OrdersTotal()-1 ; i>=0; i--)
   {
    if(OrderSelect(i, SELECT_BY_POS)==False)  {continue;}
    if(OrderSymbol() != captiencandem){continue;}
    if(OrderMagicNumber()!= magic){continue;}
        dem ++;// dem dc 1 lenh
   } 

return(dem);
}
//====================================