-- Id: 9291
-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=40833

--+------------------------------------------------------------------+
--|                               Copyright © 2018, Gehtsoft USA LLC |
--|                                            http://fxcodebase.com |
--+------------------------------------------------------------------+
--|                                      Developed by : Mario Jemic  |
--|                                          mario.jemic@gmail.com   |
--+------------------------------------------------------------------+
--|                                 Support our efforts by donating  |
--|                                 Patreon : https://goo.gl/GdXWeN  |
--|                                  Paypal : https://goo.gl/9Rj74e  |
--|                    BitCoin : 15VCJTLaz12Amr7adHSBtL9v8XomURo9RF  |
--|               BitCoin Cash : 1BEtS465S3Su438Kc58h2sqvVvHK9Mijtg  |
--|           Ethereum : 0x8C110cD61538fb6d7A2B47858F0c0AaBd663068D  |
--|                   LiteCoin : LLU8PSY2vsq7B9kRELLZQcKf5nJQrdeqwD  |
--+------------------------------------------------------------------+

function Init()
    indicator:name("Multiple Distance from Target with Alert");
    indicator:description("Multiple Distance from Target with Alert");
    indicator:requiredSource(core.Tick);
    indicator:type(core.Indicator);
	indicator.parameters:addGroup("Calculation");
	indicator.parameters:addString("Method", "Method", "Method" , "Pip");
    indicator.parameters:addStringAlternative("Method", "Pip", "Pip" , "Pip");
    indicator.parameters:addStringAlternative("Method", "Value", "Value" , "Value");
	
	
    indicator.parameters:addGroup("Style");
     indicator.parameters:addInteger("Size", "Font Size", "", 20); 
    indicator.parameters:addColor("Color", "Line Color ", " ", core.rgb(255, 0, 0));
	
	
	indicator.parameters:addGroup("Alert Style");
    indicator.parameters:addColor("Up", "Up Trend Color", "", core.rgb(0, 0, 255));
	indicator.parameters:addColor("Down", "Down Trend Color", "", core.rgb(0, 0, 255));
	
	
	indicator.parameters:addGroup("Alerts Sound");indicator.parameters:addGroup("Alerts Sound");   
    indicator.parameters:addBoolean("PlaySound", "Play Sound", "", false);	
    indicator.parameters:addBoolean("RecurrentSound", "Recurrent Sound", "", false);
	
	indicator.parameters:addGroup("Alerts Email");   
	indicator.parameters:addBoolean("SendEmail", "Send Email", "", false);
    indicator.parameters:addString("Email", "Email", "", "");
    indicator.parameters:setFlag("Email", core.FLAG_EMAIL);
	
	
	Parameters (1, "Cross")
	 
	
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

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


    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 = 1;
local Up={};
local Down={};
local Label={};
local ON={};
 local U={};
local D={};
local up={};
local down={};
 
local Email;
local SendEmail;
local  RecurrentSound ,SoundFile  ;

local Alert;
local Indicator;
local PlaySound;

local FIRST=true;


local Method;

local first;
local source = nil;

-- Streams block
local Color = nil;
local db;
local font;
local Size;
-- Routine
function Prepare(nameOnly)
    Color = instance.parameters.Color;
	Size = instance.parameters.Size;
	Method = instance.parameters.Method;
    source = instance.source;
    first = source:first();
	
	FIRST=true;

    local name = profile:id() .. "(" .. source:name() .. ", " .. Method  .. ")";
    instance:name(name);

	if nameOnly then
		return;
	end
	core.host:execute("addCommand", 1 , "Select Level",  "Select Level");
	core.host:execute("addCommand", 2 , "Reset",  "Reset");
		
		require("storagedb");
    db = storagedb.get_db(name);
	
	core.host:execute ("setTimer", 3, 1);
	
	 font = core.host:execute("createFont", "Ariel", Size, true, false); 
	 Initialization();
end



function  Initialization ()
     Size=instance.parameters.Size;
	 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;
	
		if ON[i] then
		up[i] = instance:createTextOutput ("Up", "Up", "Wingdings", Size, core.H_Center, core.V_Center, instance.parameters.Up, 0);
		down[i] = instance:createTextOutput ("Dn", "Dn", "Wingdings", Size, core.H_Center, core.V_Center, instance.parameters.Down, 0);
		end
	end
		
	

	
end	


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


local i;
	for i = 1, Number , 1 do
		  if ON[i] then
		 down[i]:setNoData (period); 
		 up[i]:setNoData (period);
		 end
   end	 
   
   
local Num =tonumber(db:get (tostring("Num"), 0));

if Num == 0 then
return;
end
   
   for i = 1, Num , 1 do
   core.host:execute("drawLabel1",i*10+ 4, -100, core.CR_RIGHT,    2*Size +( i *100), core.CR_TOP, core.H_Center, core.V_Bottom,
									 font , Color, ""    );		
	end
    Activate (1, period)
	 
  
end


function Activate (id, period)

     local Num =tonumber(db:get (tostring("Num"), 0));
	 
	 if Num == 0 then
	 return;
	 end
	 
	local i; 
	
    local Level;
for i= 1, Num ,1 do	
	    
	         Level=tonumber(db:get (tostring("Level".. i), 0));
		
	  if id == 1  and ON[id] and Level~= 0 then
	  
	       
			if 	source[period-1] <  Level
			and 	source[period ] >  Level
			then
			           
						     up[id]:set(period , Level, "\108");	
						   
			
			 D[id] = nil;
						   
							  if U[id]~=source:serial(period) 
							  and period == source:size()-1
							  then
							  U[id]=source:serial(period);
							  SoundAlert(Up[id]);
							  EmailAlert( i.. ". Level Cross Over");
							  end
			core.host:execute("drawLabel1",i*10+ 4, -100, core.CR_RIGHT,    2*Size +( i *100), core.CR_TOP, core.H_Center, core.V_Bottom,
									 font , Color, "Cross Over"    );					  
			elseif 	source[period-1] >  Level
			and 	source[period ] <  Level		
            then			
			
			            			 
			               down[id]:set(period , Level, "\108");	  						   
						   
		     U[id] = nil;
		   
			                 if  D[id]~=source:serial(period)
							 and period == source:size()-1
							 then
							 D[id]=source:serial(period);
							 SoundAlert(Down[id]);			 
							 EmailAlert(   i.. ". Level Cross Under");								   
			                     end		
             core.host:execute("drawLabel1",i*10+ 4, -100, core.CR_RIGHT,    2*Size +( i *100), core.CR_TOP, core.H_Center, core.V_Bottom,
									 font , Color, "Cross Under"    );									 
	         end
	       
	 
           	  
	  end
	  
	 
	  
    end

end

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

 if FIRST then
 FIRST= false;
 return;
 end
 
  --Alert:invoke( "PlaySound", Sound, RecurrentSound);
   terminal:alertSound(Sound, RecurrentSound);
end
 


function EmailAlert( Subject)

if not SendEmail then
return
end
 
    local date = source:date(NOW);
	local DATA = core.dateToTable (date);
	
    local LABEL =  DATA.month..", ".. DATA.day ..", ".. DATA.hour  ..", ".. DATA.min ..", ".. DATA.sec;
 

  --Alert:invoke( "SendEmail", Email, Subject,  profile:id() .. "(" .. source:instrument() .. ")"  .. Subject..", " .. LABEL );
   terminal:alertEmail(Email, Subject, profile:id() .. "(" .. source:instrument() .. ")" .. Subject .. ", " .. LABEL);
end
	 

function AsyncOperationFinished(cookie, success, message)

       local Num =tonumber(db:get (tostring("Num"), 0));
		   local i; 
       if cookie == 1 then
           local t, c;
           t, c = core.parseCsv(message, ";");
		        Num = Num+1;
		        db:put(  "Level".. Num, tostring(t[0]));	
				db:put(  "Num", tostring(Num));	
			 	             
       elseif cookie == 2 then 
	 
	    for i = 1,Num, 1 do
	    db:put(  "Level".. i, tostring(0));	
		end
		db:put(  "Num", tostring(0));
		core.host:execute ("removeAll")
       end
	   
	   Num =tonumber(db:get (tostring("Num"), 0));
	   
	   if Num == 0 then
	   return;
	   end
	   
	   for i= 1, Num, 1 do
	         local Level;	    
	         Level=tonumber(db:get (tostring("Level".. i), 0));
	   
	   
			  if Level ~= 0 then
			   core.host:execute("drawLine", i*10+1, source:date(first), Level, source:date(source:size()-1), Level,  Color);
			   
			   core.host:execute("drawLabel1", i*10+2, -100, core.CR_RIGHT,     ( i *100), core.CR_TOP, core.H_Center, core.V_Bottom,
									 font , Color, i..". Target : " ..   string.format("%." .. 5 .. "f", Level) );
									 
				local Distance;
				 
			   if Method == "Pip" then
			   Distance= (source[source:size()-1]-Level)/ source:pipSize();
			   else
			   Distance= source[source:size()-1]-Level;
			   end
				
				
				core.host:execute("drawLabel1",i*10+ 3, -100, core.CR_RIGHT,    Size +( i *100), core.CR_TOP, core.H_Center, core.V_Bottom,
									 font , Color, "Distance : " ..  string.format("%." .. 5 .. "f", Distance)    );					 

			  end
	  end
 end
 
function ReleaseInstance()
core.host:execute("deleteFont", font);      
core.host:execute ("killTimer", 1)
end