local Players = game:GetService("Players")
local VirtualInputManager = game:GetService("VirtualInputManager")

local player = Players.LocalPlayer


local ALT_USERNAME = "YourAltUsername"
local CONTROLLER_USERNAME = "YourMainUsername"

local IS_ALT = (player.Name == ALT_USERNAME)

local function getKeyCode(keyString)
	keyString = keyString:upper()

	-- adding this because roblox stupid enum just doesnt uses numbers..
	local numberMap = {
		["1"] = "One", ["2"] = "Two", ["3"] = "Three",
		["4"] = "Four", ["5"] = "Five", ["6"] = "Six",
		["7"] = "Seven", ["8"] = "Eight", ["9"] = "Nine",
		["0"] = "Zero"
	}

	-- Arrow because same reason as before.
	local arrowMap = {
		["UP"] = "Up",
		["DOWN"] = "Down",
		["LEFT"] = "Left",
		["RIGHT"] = "Right"
	}

	-- Esc
	if keyString == "ESC" then
		return Enum.KeyCode.Escape
	end

	-- F1–F12
	if keyString:match("^F%d+$") then
		local number = tonumber(keyString:sub(2))
		if number and number >= 1 and number <= 12 then
			return Enum.KeyCode[keyString]
		end
	end

	if numberMap[keyString] then
		return Enum.KeyCode[numberMap[keyString]]
	end

	if arrowMap[keyString] then
		return Enum.KeyCode[arrowMap[keyString]]
	end

	return Enum.KeyCode[keyString]
end

local function pressKey(keyString)
	local keyEnum = getKeyCode(keyString)
	if not keyEnum then return end
	
	VirtualInputManager:SendKeyEvent(true, keyEnum, false, game)
	task.wait(0.1)
	VirtualInputManager:SendKeyEvent(false, keyEnum, false, game)
end

local function holdKey(keyString, duration)
	local keyEnum = getKeyCode(keyString)
	if not keyEnum then return end
	
	VirtualInputManager:SendKeyEvent(true, keyEnum, false, game)
	task.wait(duration)
	VirtualInputManager:SendKeyEvent(false, keyEnum, false, game)
end

local function handleChat(plr, message)
	if plr.Name ~= CONTROLLER_USERNAME then return end
	if not IS_ALT then return end

	local pressPrefix = "!key press "
	local holdPrefix = "!key hold "


	if message:sub(1, #pressPrefix):lower() == pressPrefix then
		local key = message:sub(#pressPrefix + 1)
		if key ~= "" then
			pressKey(key)
		end
		return
	end

	if message:sub(1, #holdPrefix):lower() == holdPrefix then
		local args = message:sub(#holdPrefix + 1)
		local split = string.split(args, " ")
		local key = split[1]
		local duration = tonumber(split[2])

		if key and duration then
			holdKey(key, duration)
		end
	end
end

for _, plr in pairs(Players:GetPlayers()) do
	plr.Chatted:Connect(function(message)
		handleChat(plr, message)
	end)
end

Players.PlayerAdded:Connect(function(plr)
	plr.Chatted:Connect(function(message)
		handleChat(plr, message)
	end)
end)