local function checkDiskIDs()
    -- Get a list of all connected peripherals
    local peripherals = peripheral.getNames()

    -- Array to store disk IDs
    local diskIDs = {}

    -- Loop through all peripherals
    for _, name in ipairs(peripherals) do
        -- Check if the peripheral is a disk drive
        if peripheral.getType(name) == "drive" then
            -- Get the disk ID from the disk drive
            local diskID = disk.getID(name)

            -- If a disk is inserted, add its ID to the array
            if diskID then
                table.insert(diskIDs, {id = diskID, name = name})
            end
        end
    end

    -- Check if any disks were found
    if #diskIDs > 0 then
        return diskIDs
    else
        return nil
    end
end

local function drawSecurityCardPrompt()
    local contentLines = {
        "Please insert your security card.",
        "Press ENTER to use password instead."
    }
    drawPopupWindow("Insert Security Card", contentLines)
end

local function drawErrorMessage(message)
    drawPopupWindow("Error", {message})
end

local function ejectDisk(diskName)
    peripheral.call(diskName, "ejectDisk")
end

local function insertSecurityCard(username)
    local idFolder = fs.combine(USERS_FOLDER .. username, "ID")
    if not fs.exists(idFolder) then
        return false
    end

    while true do
        drawSecurityCardPrompt()

        local event, key = os.pullEvent()

        if event == "key" and key == keys.enter then
            return false  -- Allow password login if enter is pressed
        elseif event == "disk" or event == "disk_insert" then
            local diskIDs = checkDiskIDs()
            if diskIDs then
                for _, disk in ipairs(diskIDs) do
                    ejectDisk(disk.name)  -- Eject the disk after checking
                    local idFile = fs.combine(idFolder, tostring(disk.id) .. ".file")
                    if fs.exists(idFile) then
                        return true  -- Allow access if a valid security ID is found
                    end
                end
                drawErrorMessage("Error: Unregistered security key.")
                os.sleep(2)
            end
        end
    end
end