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

-- Wrap peripherals
local cardDrive = peripheral.wrap(cardDriveSide)
local monitor = peripheral.wrap(monitorSide)

-- Lock status
local deviceLocked = fs.exists("Block.txt")

-- Function to display a message on the monitor
local function displayMessage(line, message)
    monitor.setCursorPos(1, line)
    monitor.clearLine()
    monitor.write(message)
end

-- Function to display a detailed message about the access card status
local function displayAccessCardMessage(status)
    monitor.clear()
    if status == "insert" then
        displayMessage(1, "Doggy OS Enterprise Security")
        displayMessage(2, "============================")
        displayMessage(4, "Welcome to Doggy OS Enterprise Security System.")
        displayMessage(6, "Please insert your access card to proceed.")
    elseif status == "valid" then
        displayMessage(1, "Access Granted")
        displayMessage(2, "============================")
        displayMessage(4, "Welcome, authorized user!")
        displayMessage(6, "Access has been granted.")
        sleep(3) -- Display message for 3 seconds
    elseif status == "invalid" then
        displayMessage(1, "Access Denied")
        displayMessage(2, "============================")
        displayMessage(4, "Invalid or unauthorized card.")
        displayMessage(6, "Access denied. Please contact")
        displayMessage(7, "security for assistance.")
        sleep(3) -- Display message for 3 seconds
    elseif status == "locked" then
        displayMessage(1, "Device Disabled")
        displayMessage(2, "============================")
        displayMessage(4, "Suspicious activity detected.")
        displayMessage(6, "Device is locked. Please")
        displayMessage(7, "contact security for assistance.")
    elseif status == "override" then
        displayMessage(1, "Override Disk Detected")
        displayMessage(2, "============================")
        displayMessage(4, "Admin access granted.")
        displayMessage(6, "Device will reset now.")
        sleep(3) -- Display message for 3 seconds
    end
end

-- Function to lock the device after suspicious activity
local function lockDevice()
    deviceLocked = true
    displayAccessCardMessage("locked")
    -- Create a lock file to persist the lock state
    local file = fs.open("Block.txt", "w")
    file.write("Device is locked due to suspicious activity.")
    file.close()
end

-- Function to handle the override disk
local function handleOverrideDisk()
    fs.delete("Block.txt")
    displayAccessCardMessage("override")
    sleep(2)
    os.reboot()
end

-- Function to show "Device Disabled" message and check for override disk
local function showDeviceDisabledMessage()
    displayAccessCardMessage("locked")
    while deviceLocked do
        if cardDrive.isDiskPresent() then
            local diskID = cardDrive.getDiskID()
            local diskMountPath = "/disk"

            if fs.exists(diskMountPath .. "/Overide/" .. diskID .. ".ID") then
                handleOverrideDisk()
                break
            end
        end
        sleep(1) -- Wait briefly before checking again
    end
end

-- Function to check the inserted card and control the door
function checkCard()
    if deviceLocked then
        showDeviceDisabledMessage() -- Show static lock message if locked
        return
    end

    displayAccessCardMessage("insert") -- Initial message to insert card

    while true do
        if cardDrive.isDiskPresent() then
            local diskID = cardDrive.getDiskID()
            local diskMountPath = "/disk"

            -- Check for startup files
            if fs.exists(diskMountPath .. "/startup") or fs.exists(diskMountPath .. "/startup.lua") then
                if not fs.exists("Block.txt") then
                    -- Create Block.txt and reboot the device
                    local file = fs.open("Block.txt", "w")
                    file.write("Device is locked due to suspicious activity.")
                    file.close()
                    os.reboot()
                    break
                end
            end

            if fs.exists(diskMountPath .. "/Overide/" .. diskID .. ".ID") then
                handleOverrideDisk()
                break
            elseif fs.exists(diskMountPath .. "/Cards/" .. diskID .. ".ID") then
                displayAccessCardMessage("valid")
                redstone.setOutput(doorSide, true) -- Open door
                sleep(1) -- Ensure door is fully open before ejecting

                -- Eject the card
                cardDrive.ejectDisk()
                sleep(2) -- Keep door open for 2 seconds after ejecting
                redstone.setOutput(doorSide, false) -- Close door

                break -- Exit loop after valid card action
            else
                displayAccessCardMessage("invalid")
                lockDevice()
                break -- Exit loop after invalid card action
            end
        else
            -- No card inserted, continue checking
            sleep(1) -- Wait briefly before checking again
        end
    end
end

-- Main loop to continuously check for the card
while true do
    checkCard()
end