-- video explanation is HERE: https://www.youtube.com/watch?v=Arn8ExQ2Gjg
-- note that some of the code has changed since then (it works better now!)
-- get luamacros HERE: http://www.hidmacros.eu/forum/viewtopic.php?f=10&t=241#p794
-- plug in your 2nd keyboard, load this script into LUAmacros, and press the triangle PLAY button.
-- Then, press any key on that keyboard to assign logical name ('MACROS') to macro keyboard
clear() --clear the console from last run
local keyboardIdentifier = '0000AAA'


local path = "../keypressed.txt"
local outputFilePath = "../luaoutput.txt"



-- MUST BE RUN AS ADMINISTRATOR TO BE ABLE TO DYNAMICALY GET THE WORKING DIRECTORY
-- -- Open a pipe to run the Windows 'cd' command, which returns the current working directory
-- local handle = io.popen("cd")
-- -- Read the output of the command as a single line (i.e., C:\Users\User\LUAMacros\luascript.lua)
-- local cwd = handle:read("*l")
-- -- Close the pipe to free system resources
-- handle:close()
-- -- Construct the full path to 'keypressed.txt' by appending the filename to the working directory
-- local path = cwd .. "\\keypressed.txt"
-- -- Construct the full path to 'luaoutput.txt' similarly
-- local outputFilePath = cwd .. "\\luaoutput.txt"


--You need to get the identifier code for the keyboard with name "MACROS"
--This appears about halfway through the SystemID item and looks like 1BB382AF or some other alphanumeric combo.
-- It's usually 7 or 8 characters long.
--Once you have this identifier, replace the value of keyboardIdentifier with it

--Don't ask for keyboard assignment help if the user has manually entered a keyboard identifier
if keyboardIdentifier == '0000AAA' then
	lmc_assign_keyboard('MACROS');
else lmc_device_set_name('MACROS', keyboardIdentifier);
end
--This lists connected keyboards
dev = lmc_get_devices()

-- Need this output file so we could read it with python so that we can dinamically determine which keyboard is connected to the system
local output = io.open(outputFilePath, "w")

if not output then
  print("Failed to open output file at: " .. outputFilePath)
  return
end

for key,value in pairs(dev) do
  print(key..':')
  output:write(key .. ':\n')
  for key2,value2 in pairs(value) do
      print('  '..key2..' = '..value2)
      output:write('  ' .. key2 .. ' = ' .. value2 .. '\n')
  end
end
output:flush()
output:close()
print('You need to get the identifier code for the keyboard with name "MACROS"')
print('Then replace the first 0000AAA value in the code with it. This will prevent having to manually identify keyboard every time.')
-- Hide window to tray to keep taskbar tidy
lmc.minimizeToTray = true
--lmc_minimize()

--Start Script
sendToPython = function (key)
      --print('It was assigned string:    ' .. key)
      local file = io.open(path, "w") -- writing this string to a text file on disk is probably NOT the best method. Feel free to program something better!
      --If you didn't put your Python scripts into C:/Users/User/Desktop/luamacros, Make sure to substitute the path that leads to your own "keypressed.txt" file, using the double backslashes.
	  --print("we are inside the text file")
      file:write(key)
      file:flush() --"flush" means "save." Lol.
      file:close()
      lmc_send_keys('{F24}')  -- This presses F24. Using the F24 key to trigger Python is probably NOT the best method. Feel free to program something better!
end

local config = {
	[45]  = "insert",
	[36]  = "home",
	[33]  = "pageup",
	[46]  = "delete",
	[35]  = "end",
	[34]  = "pagedown",
	[27]  = "escape",
	[112] = "F1",
	[113] = "F2",
	[114] = "F3",
	[115] = "F4",
	[116] = "F5",
	[117] = "F6",
	[118] = "F7",
	[119] = "F8",
	[120] = "F9",
	[121] = "F10",
	[122] = "F11",
	[123] = "F12",
	-- [8]   = "backspace",
	[220] = "backslash",
	-- [13]  = "enter",
	[16]  = "rShift",
	[17]  = "rCtrl",
	-- [38]  = "up",
	-- [37]  = "left",
	-- [40]  = "down",
	-- [39]  = "right",
	[32]  = "space",
	[186] = "semicolon",
	[222] = "singlequote",
	[190] = "period",
	[191] = "slash",
	[188] = "comma",
	[219] = "leftbracket",
	[221] = "rightbracket",
	[189] = "minus",
	[187] = "equals",
	[96]  = "num0",
	[97]  = "num1",
	[98]  = "num2",
	[99]  = "num3",
	[100] = "num4",
	[101] = "num5",
	[102] = "num6",
	[103] = "num7",
	[104] = "num8",
	[105] = "num9",

	[106] = "numMult",
    [107] = "numPlus",
    [108] = "numEnter", --sometimes this is different, check your keyboard
	[109] = "numMinus",
    [110] = "numDelete",
	[111] = "numDiv",
    [144] = "numLock", --probably it is best to avoid this key. I keep numlock ON, or it has unexpected effects

    [192] = "`",  --this is the tilde key just before the number row
    [9]   = "tab",
    [20]  = "capslock",
    [18]  = "alt",


	[string.byte('Q')] = "q",
	[string.byte('W')] = "w",
	[string.byte('E')] = "e",
	[string.byte('R')] = "r",
	[string.byte('T')] = "t",
	[string.byte('Y')] = "y",
	[string.byte('U')] = "u",
	[string.byte('I')] = "i",
	[string.byte('O')] = "o",
	[string.byte('P')] = "p",
	[string.byte('A')] = "a",
	[string.byte('S')] = "s",
	[string.byte('D')] = "d",
	[string.byte('F')] = "f",
	[string.byte('G')] = "g",
	[string.byte('H')] = "h",
	[string.byte('J')] = "j",
	[string.byte('K')] = "k",
	[string.byte('L')] = "l",
	[string.byte('Z')] = "z",
	[string.byte('X')] = "x",
	[string.byte('C')] = "c",
	[string.byte('V')] = "v",
	[string.byte('B')] = "b",
	[string.byte('N')] = "n",
	[string.byte('M')] = "m",

    [string.byte('0')] = "0",
	[string.byte('1')] = "1",
	[string.byte('2')] = "2",
	[string.byte('3')] = "3",
	[string.byte('4')] = "4",
	[string.byte('5')] = "5",
    [string.byte('6')] = "6",
    [string.byte('7')] = "7",
    [string.byte('8')] = "8",
    [string.byte('9')] = "9",

	--[255] = "printscreen" --these keys do not work
}

-- define callback for whole device
lmc_set_handler('MACROS', function(button, direction)
	--Ignoring upstrokes ensures keystrokes are not registered twice, but activates faster than ignoring downstrokes. It also allows press and hold behaviour
        if (direction == 0) then return end -- ignore key upstrokes.
	if type(config[button]) == "string" then
                print(' ')
                print('Your key ID number is:   ' .. button)
				print('It was assigned string:    ' .. config[button])
				sendToPython(config[button])
	
	else
		print(' ')
		print('Not yet assigned: ' .. button)
		-- Forward arrow keys to OS
		if button == 37 then lmc_send_keys('{LEFT}')
		elseif button == 38 then lmc_send_keys('{UP}')
		elseif button == 39 then lmc_send_keys('{RIGHT}')
		elseif button == 40 then lmc_send_keys('{DOWN}')
		elseif button == 13 then lmc_send_keys('\n')

		end
	end

end)



