-- More information about this indicator can be found at:
--http://fxcodebase.com/code/viewtopic.php?f=17&t=62917

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-- Indicator profile initialization routine
-- Defines indicator profile properties and indicator parameters
-- TODO: Add minimal and maximal value of numeric parameters and default color of the streams

function Init()
   indicator:name("Moving average channel break with Alert");
    indicator:description("");
   indicator:requiredSource(core.Bar);
    indicator:type(core.Indicator);
   
   
     indicator.parameters:addGroup("Mode");  
	indicator.parameters:addString("Live", "End of Turn / Live", "", "Live");
    indicator.parameters:addStringAlternative("Live", "End of Turn", "", "End of Turn");
	indicator.parameters:addStringAlternative("Live", "Live", "", "Live");   
   
    indicator.parameters:addGroup("Calculation");		
	

    indicator.parameters:addInteger("Period", "Fast Period MA", "", 12, 2, 2000 );
	indicator.parameters:addString("Method", "MA Method", "Method" , "TMA");
    indicator.parameters:addStringAlternative("Method", "MVA", "MVA" , "MVA");
    indicator.parameters:addStringAlternative("Method", "EMA", "EMA" , "EMA");
    indicator.parameters:addStringAlternative("Method", "LWMA", "LWMA" , "LWMA");
    indicator.parameters:addStringAlternative("Method", "TMA", "TMA" , "TMA");
    indicator.parameters:addStringAlternative("Method", "SMMA", "SMMA" , "SMMA");
    indicator.parameters:addStringAlternative("Method", "KAMA", "KAMA" , "KAMA");
    indicator.parameters:addStringAlternative("Method", "VIDYA", "VIDYA" , "VIDYA");
    indicator.parameters:addStringAlternative("Method", "WMA", "WMA" , "WMA");
	indicator.parameters:addStringAlternative("Method", "TEMA", "TEMA" , "TEMA");
    indicator.parameters:addStringAlternative("Method", "DEMA", "DEMA" , "DEMA");

	 
	indicator.parameters:addColor("color2", "Top MA color", "MA color", core.rgb(0,255,0));
	indicator.parameters:addInteger("width2", "MA Line width", "Line width", 1, 1, 5);
    indicator.parameters:addInteger("style2", "MA Line style", "Line style", core.LINE_SOLID);
    indicator.parameters:setFlag("style2", core.FLAG_LINE_STYLE);
	 
	indicator.parameters:addColor("color1", "Bottom MA color", "MA color", core.rgb(255,0,0));
	indicator.parameters:addInteger("width1", "MA Line width", "Line width", 1, 1, 5);
    indicator.parameters:addInteger("style1", "MA Line style", "Line style", core.LINE_SOLID);
    indicator.parameters:setFlag("style1", core.FLAG_LINE_STYLE);
	
 

	
	indicator.parameters:addGroup("Alert Style");
    indicator.parameters:addColor("UpTrendColor", "Up Trend Color", "", core.rgb(0, 255, 0));
	indicator.parameters:addColor("DownTrendColor", "Down Trend Color", "", core.rgb(255, 0, 0));
	indicator.parameters:addInteger("Size", "Label Size", "", 10, 1 , 100);
	
	indicator.parameters:addGroup("Alerts Sound");   
    indicator.parameters:addBoolean("PlaySound", "Play Sound", "", true);	
    indicator.parameters:addBoolean("RecurrentSound", "Recurrent Sound", "", false);
	indicator.parameters:addBoolean("ShowAlert", "Show Alert", "", true);
	
	indicator.parameters:addGroup("Alerts Email");   
	indicator.parameters:addBoolean("SendEmail", "Send Email", "", true);
    indicator.parameters:addString("Email", "Email", "", "");
    indicator.parameters:setFlag("Email", core.FLAG_EMAIL);
	indicator.parameters:addBoolean("Show", "Show Dialog box Alert", "", true);
	indicator.parameters:addBoolean("OnlyOnce", "Alert Once", "Subsequent Alert will be ignored.", false);	
	
	Parameters (1, "Top Line");
	Parameters (2, "Bottom Line");
 
end

function Parameters ( id, Label )
  
  
   indicator.parameters:addGroup(Label .. " Alert");
  
    indicator.parameters:addBoolean("ON"..id , "Show " .. Label .." Alert" , "", true);


    indicator.parameters:addFile("Up"..id, Label .. " Cross Over Sound", "", "");
    indicator.parameters:setFlag("Up"..id, core.FLAG_SOUND);
	
	indicator.parameters:addFile("Down"..id, Label .. " Cross Under Sound", "", "");
    indicator.parameters:setFlag("Down"..id, core.FLAG_SOUND);
	
	 indicator.parameters:addString("Label"..id, "Label", "", Label);

end 

local 	Number = 2;

-- 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 Up={};
local Down={};
local Label={};
local ON={};
local Size;
local Email;
local SendEmail;
local  RecurrentSound ,SoundFile  ;
local Show;
local Alert;
local PlaySound;
local Live;
local FIRST=true;
local OnlyOnce;
local U={};
local D={};
local UpTrendColor, DownTrendColor;
local OnlyOnceFlag;
local font;
-- Streams block

local first;
local source = nil;
local Price2, Price1;
local Indicator;
local Method, Period;
local  top, bottom;
local Top,Bottom;
local ShowAlert;
 
-- Routine
function Prepare(nameOnly) 
    
	OnlyOnceFlag=true;
	FIRST=true;
	OnlyOnce = instance.parameters.OnlyOnce;
	ShowAlert = instance.parameters.ShowAlert;
	Show = instance.parameters.Show;
	Live = instance.parameters.Live;
	UpTrendColor = instance.parameters.UpTrendColor;
	DownTrendColor = instance.parameters.DownTrendColor;
	Size=instance.parameters.Size;
	

	Method = instance.parameters.Method;	
    Period = instance.parameters.Period;
	
	source = instance.source; 
	    -- Base name of the indicator.
    local name = profile:id() .. "(" .. source:name() .. ", " .. Method .. ", " .. Period  .. ")";
    instance:name(name);
	
	if   (nameOnly) then
        return;
    end
	
	
    font = core.host:execute("createFont", "Wingdings", Size, false, false);
	
    assert(core.indicators:findIndicator(Method) ~= nil, "Please, download and install " .. Method ..".LUA indicator"); 
	
	 -- Create short and long EMAs for the source
    top = core.indicators:create(Method, source.high, Period);
	bottom = core.indicators:create(Method, source.low, Period);
	
	first=math.max(top.DATA:first(),bottom.DATA:first() );

    Top = instance:addStream("Top", core.Line, name .. ".Top", "Top", instance.parameters.color2,  first);
	Top:setWidth(instance.parameters.width2);
    Top:setStyle(instance.parameters.style2);
	
	Bottom = instance:addStream("Bottom", core.Line, name .. ".Bottom", "Bottom", instance.parameters.color1,  first);
	Bottom:setWidth(instance.parameters.width1);
    Bottom:setStyle(instance.parameters.style1);
	   
	Initialization();
end


function  Initialization ()
    
	 SendEmail = instance.parameters.SendEmail;
	 
	 local i;
	 for i = 1, Number , 1 do 
	  Label[i]=instance.parameters:getString("Label" .. i);
	  ON[i]=instance.parameters:getBoolean("ON" .. i);
	 end
	 
	 
	 

    if SendEmail then
        Email = instance.parameters.Email;
    else
        Email = nil;
    end
    assert(not(SendEmail) or (SendEmail and Email ~= ""), "E-mail address must be specified");
	
	
	 PlaySound = instance.parameters.PlaySound;
    if PlaySound then
    
	  for i = 1, Number , 1 do 
	  Up[i]=instance.parameters:getString("Up" .. i);
	  Down[i]=instance.parameters:getString("Down" .. i);
	  end
	
    else 
	
	  for i = 1, Number , 1 do 
       Up[i]=nil;
	  Down[i]=nil;
	  end
		
    end
    
        for i = 1, Number , 1 do 
	  assert(not(PlaySound) or (PlaySound and Up[i] ~= "") or (PlaySound and Up[i] ~= ""), "Sound file must be chosen"); 
	 assert(not(PlaySound) or (PlaySound and Down[i] ~= "") or (PlaySound and Down[i] ~= ""), "Sound file must be chosen");
	end
	 
    RecurrentSound = instance.parameters.RecurrentSound;
	
	for i = 1, Number , 1 do 
	U[i] = nil;
	D[i] = nil;	 
	end
		 
end	


 function Calculate(period, mode)
 
   
	
	 top:update(mode);
	 bottom:update(mode);

	 if   period < first then
	return;
	end
	
	Top[period]= top.DATA[period];
	Bottom[period]= bottom.DATA[period];
 
 end
 

-- Indicator calculation routine
-- TODO: Add your code for calculation output values
function Update(period, mode) 



    Calculate(period, mode);

    core.host:execute ("removeLabel", source:serial(period)); 
   
     if period < first then
	 return;
	 end
	
    Activate (1, period);
	Activate (2, period);
 
end

function ReleaseInstance()
       core.host:execute("deleteFont", font);
end	   

function Activate (id, period)

   local Shift=0;
   

   if Live~= "Live" then
	period=period-1;
	Shift=1;
	end
 
	  if id == 1  and ON[id]  then
	  
	       
			if  source.close[period] > Top[period] 
			and   source.close[period-1] <= Top[period-1] 
			then
			           
						    
             core.host:execute("drawLabel1", source:serial(period), source:date(period),  core.CR_CHART, Top[period], core.CR_CHART, core.H_Center, core.V_Top, font, UpTrendColor, "\225");

 						 
						   
			
			 D[id] = nil;
						   
							  if U[id]~=source:serial(period) 
							  and period == source:size()-1-Shift
							  and not FIRST 
							  then
							  OnlyOnceFlag=false;
							  U[id]=source:serial(period);
							  SoundAlert(Up[id]);
							  EmailAlert(  Label[id], " Cross Over", period);
							  SendAlert("Crossed over");  
							        
									Pop(Label[id], " Cross Over " );  	
								    
								 
							  end
			end
			
	  
	 
	  end
	  
	  
	  if id == 2  and ON[id]  then
	  
	       
			if  source.close[period] < Bottom[period] 
			and   source.close[period-1] >= Bottom[period-1] 
			then
			           
						    
             core.host:execute("drawLabel1", source:serial(period), source:date(period),  core.CR_CHART, Bottom[period], core.CR_CHART, core.H_Center, core.V_Bottom, font, DownTrendColor, "\226");

 						 
						   
			
			 D[id] = nil;
						   
							  if U[id]~=source:serial(period) 
							  and period == source:size()-1-Shift
							  and not FIRST 
							  then
							  OnlyOnceFlag=false;
							  U[id]=source:serial(period);
							  SoundAlert(Up[id]);
							  EmailAlert(  Label[id], " Cross Over", period);
							  SendAlert("Crossed over");  
							        
									Pop(Label[id], " Cross Over " );  	
								    
								 
							  end
			end
			
	  
	 
	  end
	  
	  
	  
		   
        if FIRST then
        FIRST=false;      
        end		

end


function AsyncOperationFinished (cookie, success, message)
end


function Pop(label , note)
  
   if not Show then
   return;
   end
   
   core.host:execute ("prompt", 1, label ,   " ( " .. source:instrument() .. " : " .. source:barSize() .. " ) "  ..   label .. " : " .. note );
   

end


function SendAlert(message)
    if not ShowAlert then
        return;
    end
 
    
   terminal:alertMessage(source:instrument(), source[NOW], message, source:date(NOW));
end

function SoundAlert(Sound)
 if not PlaySound then
 return;
 end

  if OnlyOnce and OnlyOnceFlag== false then
 return;
 end

 
  terminal:alertSound(Sound, RecurrentSound);
end



function EmailAlert( label , Subject, period)

if not SendEmail then
return
end

 if OnlyOnce and OnlyOnceFlag== false then
 return;
 end


    local date = source:date(period);
	local DATA = core.dateToTable (date);
	
    
   local delim = "\013\010";  
   local Note=  profile:id().. delim.. " Label : " ..label  .. delim .. " Alert : " .. Subject ;   
   local Symbol= "Instrument : " .. source:instrument() ;
   local Time =  " Date : " .. DATA.month.." / ".. DATA.day .." Time:  ".. DATA.hour  .." / ".. DATA.min .." / ".. DATA.sec;  
   
   
    local TF= "Time Frame : " .. source:barSize();       
    local text = Note  .. delim ..  Symbol .. delim .. TF  .. delim .. Time;
	 

   terminal:alertEmail(Email, profile:id(), text);
end