//+------------------------------------------------------------------+
//|                                                        MTBox.mqh |
//|                        Copyright 2018, MetaQuotes Software Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property library
#property version  "1.2.5"

#include <Trade\SymbolInfo.mqh>
#include "MTUtils.mqh"

//+------------------------------------------------------------------+
//|              Definitions                                                    |
//+------------------------------------------------------------------+

#define UPDATE_BASE_W 0
#define UPDATE_SHORT_W 1
#define UPDATE_LONG_W 2


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
class DBox
  {
public:
   int               height;
   int               length;
   double            l_multiplier;
   double            w_multiplier;

protected:
   double            long_signal;
   double            short_signal;
   int               length_left;
   bool              is_first_trade;
   long               cid;
   CSymbolInfo       s_info;
public:
   bool              shouldGoLong(double price) {return price >= long_signal; }
   bool              shouldGoShort(double price) {return price <= short_signal; }
   bool              shouldUpdateBox() {return length_left <= 0;}
   bool              isFirstBox() { return is_first_trade; }
   double            getLongSignal() {return long_signal; }
   double            getShortSignal() {return short_signal; }
   double            getLengthLeft() {return length_left; }
   void              Init(int i_height,int i_length,double il_multiplier,double iw_multiplier);
   void              reduceBoxLife() {length_left --;}
   void              resetLength() {length_left = length;}
   void              doFirstBox(double price, double ask, double bid);
   void              DrawBox(void);
   void              UpdateBox(double price,double ask,double bid, int update_status);
   void              PrintTheBox(double price,double ask,double bid);
  };

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void DBox::Init(int i_height, int i_length, double il_multiplier, double iw_multiplier)
  {
   height = i_height;
   length = i_length;
   l_multiplier = il_multiplier;
   w_multiplier = iw_multiplier;
   long_signal = 0.0;
   short_signal = 0.0;
   length_left = i_length;
   is_first_trade = true;
   cid = ChartID();


  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void DBox::doFirstBox(double price,double ask,double bid)
  {
   UpdateBox(price,ask,bid);
   is_first_trade = false;
   return;
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void DBox::DrawBox()
  {
   long box_plot = cid;

   if(ObjectFind(box_plot, "top_line")>=0)
     {
      ObjectMove(box_plot, "top_line", 0,0, long_signal);
     }
   else
     {
      ObjectCreate(box_plot,"top_line", OBJ_HLINE, 0, 0,long_signal);
     }



   if(ObjectFind(box_plot, "bottom_line") >= 0)
     {
      ObjectMove(box_plot, "bottom_line", 0,0,short_signal);
     }
   else
     {
      ObjectCreate(box_plot,"bottom_line", OBJ_HLINE, 0, 0,short_signal);
     }

   ObjectSetInteger(box_plot, "bottom_line", OBJPROP_COLOR, clrPurple);
   ObjectSetInteger(box_plot, "top_line", OBJPROP_COLOR, clrPurple);

   ChartRedraw(box_plot);
  }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void DBox::UpdateBox(double price, double ask, double bid, int update_status=UPDATE_BASE_W)
  {
   switch(update_status)
     {

      case UPDATE_SHORT_W:
         short_signal = NormalizeDouble(price - (w_multiplier* height*_Point), _Digits);
         long_signal = NormalizeDouble(price + (l_multiplier * height * _Point), _Digits);
         break;
      case UPDATE_LONG_W:
         short_signal = NormalizeDouble(price - (l_multiplier* height*_Point), _Digits);
         long_signal = NormalizeDouble(price + (w_multiplier * height * _Point), _Digits);
         break;
      default:
         long_signal = NormalizeDouble(price +(0.5*height*_Point), _Digits);
         short_signal = NormalizeDouble(price - (0.5*height*_Point), _Digits);
         break;
     }

   resetLength();
   DrawBox();
  }
//+------------------------------------------------------------------+
void DBox::PrintTheBox(double price, double ask, double bid)
  {

   double sell_volume = s_info.SessionSellOrdersVolume();
   double buy_volume = s_info.SessionBuyOrdersVolume();
   int buy_orders = s_info.SessionBuyOrders();

   Comment("Box : Long Signal = ", getLongSignal(), " | Short Signal = ", getShortSignal(), " | Price : ", price, " | Lenght : ", getLengthLeft(),
           "\nSell Volume : ", sell_volume, " | Buy Volume : ", buy_volume,"| Total Used : ", buy_orders,
           "\nPRICE :", PRICE);
  }
//+------------------------------------------------------------------+

//+------------------------------------------------------------------+