PIN confirm

-- PIN Configuration Script with Confirmation and Masked Input

local configFile = "/disk/security/PIN.config"

-- Function to display a simple GUI
local function displayGUI()
    term.clear()
    term.setCursorPos(1, 1)
    print("Set PIN for Lockscreen:")
end

-- Function to get masked input
local function maskedInput()
    local input = ""
    term.setCursorBlink(true)
    while true do
        local _, key = os.pullEvent("key")
        if key == keys.enter then
            print()
            term.setCursorBlink(false)
            break
        elseif key == keys.backspace then
            if #input > 0 then
                input = input:sub(1, #input - 1)
                term.setCursorPos(term.getCursorPos() - 1, term.getCursorY())
                write(" ")  -- Replace the last character with a space
                term.setCursorPos(term.getCursorPos() - 1, term.getCursorY())
            end
        elseif key >= 32 and key <= 126 then
            input = input .. string.char(key)
            write("*")
        end
    end
    return input
end

-- Function to get input and save PIN to file
local function setPIN()
    local pin
    local confirmedPin

    -- Get the first PIN entry
    term.setCursorPos(1, 3)
    write("Enter PIN: ")
    pin = maskedInput()

    -- Get the second PIN entry for confirmation
    term.setCursorPos(1, 4)
    write("Confirm PIN: ")
    confirmedPin = maskedInput()

    -- Check if the two PINs match
    if pin == confirmedPin then
        -- Open the file in write mode and save the PIN
        local file = fs.open(configFile, "w")
        file.write(pin)
        file.close()

        print("PIN set successfully!")
    else
        print("PIN entries do not match. Please try again.")
        setPIN()
    end
end

-- Main function
local function main()
    displayGUI()
    setPIN()
end

-- Run the main function
main()