Card Data 2

-- main.lua
local cardDriveSide = "bottom" -- side where the card reader is connected
local monitorSide = "right" -- side where the monitor is connected
local doorSide = "left" -- side where the door is connected

local cardDrive = peripheral.wrap(cardDriveSide)
local monitor = peripheral.wrap(monitorSide)

-- Clear monitor and initialize
monitor.clear()
monitor.setCursorPos(1, 1)

function displayOwnerData(diskPath)
    local nameFile = fs.open(diskPath.."/Data/Owner/Name.txt", "r")
    local rankFile = fs.open(diskPath.."/Data/Owner/Rank.txt", "r")

    if nameFile and rankFile then
        local name = nameFile.readAll()
        local rank = rankFile.readAll()

        nameFile.close()
        rankFile.close()

        monitor.clear()
        monitor.setCursorPos(1, 1)
        monitor.write("Name: " .. name)
        monitor.setCursorPos(1, 2)
        monitor.write("Rank: " .. rank)
    else
        monitor.clear()
        monitor.setCursorPos(1, 1)
        monitor.write("Owner data missing.")
    end
end

function checkCard()
    if cardDrive.isDiskPresent() then
        local diskID = cardDrive.getDiskID()
        local diskPath = cardDrive.getMountPath() -- Should be /disk2

        if fs.exists("/disk/Cards/"..diskID..".ID") then
            displayOwnerData(diskPath)
            redstone.setOutput(doorSide, true) -- Open door
            sleep(5) -- Keep door open for 5 seconds
            redstone.setOutput(doorSide, false) -- Close door
        else
            monitor.clear()
            monitor.setCursorPos(1, 1)
            monitor.write("Invalid card.")
        end
    else
        monitor.clear()
        monitor.setCursorPos(1, 1)
        monitor.write("Insert card.")
    end
end

while true do
    checkCard()
    sleep(1)
end