-- take note of YtLink, I keep passing it around in order to show it as the title bar
-- of the download window, YOU WILL HAVE TO PAY ATTENTION TO IT
-- IT GOES THROUGH FUCKING EVERYTHING
-- Also it will be replaced by what the user saves the file as
-- keep that in mind as well
require ('iuplua')

local cancelflag		--set variable
local downloadProgress		--set variable

local function downloadStart(YtLink)		--create button and cancle flag
     cancelButton = iup.button{
        title = "Cancel",
        action = function()	      
            cancelflag = true         
            
            --return iup.CLOSE		--not sure if needed
        
         end

    }
    local downloadProgress = iup.progressbar{expand="HORIZONTAL", MARQUEE="YES"}	
    local dlgProgress = iup.dialog{				   --create main window
        title = YtLink,
        dialogframe = "YES", border = "YES",
        iup.vbox {			-- create vbox that contains said objects
            downloadProgress,
            cancelButton,
        }
    }
    dlgProgress.size = "QUARTERxEIGHT" 		--should be size of dialog box
   -- dlgProgress.menubox = "NO"		-- no windows menus
    dlgProgress.close_cb = cancelButton.action	-- calls the action of the button
    dlgProgress:showxy(iup.CENTER, iup.CENTER)	-- show and position box
    return dlgProgress
end


local function DL_progress(YtLink)  -- monitor download progress
   downloadStart(YtLink) 		  -- start the progress bar
  -- downloadProgress.value = 0  
 --  local pipe = io.popen(YtLink)
   os.execute(YtLink)
    --[[repeat
        local c = pipe:read()	  -- read the first 20 characters of each line
        if c then 		-- if c is true then...
             
             --downloadProgress.value = c/100 -- x out of 100
	     				     -- in this case x is the progress
	     				     -- data we grabbed            	
             iup.Flush()		     -- speeds everything up considerably
             -- when changing an attribute of an element, the change may not 
             -- take place immediately
             -- in that case throw in a flush after the change
            
             iup.LoopStep() -- required to work, also allows user to click button
             iup.Flush() -- added this second flush... helps a shit ton
             if cancelflag then  -- if cancelflag is true, then break
             			 -- which happens if you click the button
                   
                   iup.Message("Terminated", "You have canceled the conversion") 
                   iup.Flush()
                   break 

             end

       end
       

        

until not c-- creating a loop until c is not true
pipe:close() -- closing the ipopen--]]
iup.Close()
end

convert_mp3 = {}
convert_mp3.go = function(tubeLink)
  DL_progress(tubeLink)
end

--if you can have your script call this one and insert the link to YtLink... win

--local YtLink = ('http://www.youtube.com/watch?v=jrmlums5bV8')


--DL_progress( YtLink)