-- Id: 16060
-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=63490

--+------------------------------------------------------------------+
--|                               Copyright © 2018, Gehtsoft USA LLC |
--|                                            http://fxcodebase.com |
--+------------------------------------------------------------------+
--|                                      Developed by : Mario Jemic  |
--|                                          mario.jemic@gmail.com   |
--+------------------------------------------------------------------+
--|                                 Support our efforts by donating  |
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--+------------------------------------------------------------------+ 
 
function Init()
    indicator:name("Higher Time Frame Tick Count");
    indicator:description("Higher Time Frame Tick Count");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Oscillator);
   indicator.parameters:addGroup("Calculation");
   indicator.parameters:addBoolean("Cumulative", "Cumulative", "", true);
	indicator.parameters:addGroup("Color");
    indicator.parameters:addColor("color", "Bar Color", "", core.rgb(0, 255, 0));

    
end

-- Indicator instance initialization routine
-- Processes indicator parameters and creates output streams
-- TODO: Refine the first period calculation for each of the output streams.
-- TODO: Calculate all constants, create instances all subsequent indicators and load all required libraries
-- Parameters block
local source = nil;
local first; 
local bid, ask;
local offset, weekoffset;
local loading1, loading2;
local Count;
local Cumulative;
function Prepare(nameOnly)
    source = instance.source;
    first = source:first(); 
	Cumulative= instance.parameters.Cumulative;
    
    local name = profile:id().. ")";
    instance:name(name);
    if nameOnly then
        return;
    end
	
    bid=nil;
    ask=nil;	
	offset = core.host:execute("getTradingDayOffset");
    weekoffset = core.host:execute("getTradingWeekOffset");

	Count = instance:addStream("Count", core.Bar, name, "Count", instance.parameters.color, first);
 
end

 
--other
-- Indicator calculation routine
-- TODO: Add your code for calculation output values
 function Update(period, mode)
       local from, to;
       Count[period]=0;
       if period < source:first() then
           return ;
       end
 
       if  bid == nil then
           -- if the data is not loaded yet at all
           -- load the data
           from = source:date(source:first());   -- oldest data to load
           from = core.getcandle(source:barSize(), from, offset, weekoffset);
           if source:isAlive() then              -- newest data to load or 0 if the source is "alive"
               to = 0;
           else
               to = source:date(source:size() - 1);
               to = core.getcandle(source:barSize(), to, offset, weekoffset);
           end
           load_from = from;
           loading1 = true;
		   loading2 = true;
           bid = core.host:execute("getHistory", 1, source:instrument(), "t1", from, to, true);
		   ask = core.host:execute("getHistory", 2, source:instrument(), "t1", from, to, false);
           return ;
       end
 
       if loading1 or loading2 then
           return ;
       end
     
   
	   
		 
       local curr_date = source:date(period);
       curr_date = core.getcandle(source:barSize(), curr_date, offset, weekoffset);
 
       if curr_date < load_from then
           -- if the data we are trying to get is oldest than previously loaded
           -- the extend the history to the oldest data we can request
           from = source:date(source:first());     -- load from the oldest data we have in source
           from = core.getcandle(source:barSize(), from, offset, weekoffset);
           if bid:size() > bid:first() then
               to = bid:date(bid:first());     -- to the oldest data we have in other instrument
           else
               to = load_from;
           end
           load_from = from;
           loading1 = true;
		   loading2 = true;
           core.host:execute("extendHistory", 1, bid, from, to);
		   core.host:execute("extendHistory", 2, ask, from, to);
           return ;
       end
	   
	        
       if loading1  or loading2 then
           return ;
       end
	   startdate, enddate  = core.getcandle(source:barSize(), source:date(period), offset, weekoffset);
	   Start=core.findDate(bid, startdate, false);
	   End=core.findDate(bid, enddate, false);
	   
	   
	   if Start == -1 
	   or End==-1  
	   then
	   return;
	   end
	   
	   for i= Start, End , 1 do
	   
	   
			   if  Cumulative  then 
			       if ask[i] > ask[i-1]
				   or bid[i] > bid[i-1]
				   then
				   Count[period]=Count[period]+1;
				   end
				
				   if ask[i] < ask[i-1]
				   or bid[i] < bid[i-1]
				   then
				   Count[period]=Count[period]+1;
				   end
			   else 
				   if ask[i] > ask[i-1]
				   or bid[i] > bid[i-1]
				   then
				   Count[period]=Count[period]+1;
				   end
				
				   if ask[i] < ask[i-1]
				   or bid[i] < bid[i-1]
				   then
				   Count[period]=Count[period]-1;
				   end
			   end
	   end
	   
	   
end
 
function AsyncOperationFinished(cookie, success, message)
       if cookie == 1 then
           loading1  = false;
           -- update the indicator output when loading is finished
       elseif cookie == 2 then
           loading2  = false;
           -- update the indicator output when loading is finished
       end

      if not loading1 and not loading2 then    
  	  instance:updateFrom(source:first());
           return ;	   
       end
 end