door.lua

-- Door computer startup.lua

local modem = peripheral.find("modem")
if not modem then error("No modem found. Please attach a wireless modem.") end

modem.open(1) -- Use channel 1 for all communications

local doorId = nil

local function setDoorId()
    if fs.exists("door_id.txt") then
        local file = fs.open("door_id.txt", "r")
        doorId = file.readAll()
        file.close()
        print("Door ID loaded: " .. doorId)
    else
        print("Enter the door ID:")
        doorId = read()
        local file = fs.open("door_id.txt", "w")
        file.write(doorId)
        file.close()
        print("Door ID set and saved: " .. doorId)
    end
end

local function operateDoor(action)
    print("Attempting to " .. action .. " door " .. doorId)
    if action == "open" then
        -- Set redstone output to bottom (directly powering the door below)
        rs.setOutput("bottom", true)
        print("Door " .. doorId .. " opened")
        sleep(3)  -- Keep the door open for 3 seconds
        rs.setOutput("bottom", false)
        print("Door " .. doorId .. " closed")
    else
        print("Invalid action: " .. action)
    end
end

local function monitorAccess()
    if not doorId then
        error("Door ID is not set. Please restart the computer and set a door ID.")
    end

    print("Monitoring for access requests on channel 1...")
    print("This door's ID: " .. doorId)
    while true do
        local _, _, _, _, message = os.pullEvent("modem_message")

        -- Only log the type of message and door ID for security reasons
        if type(message) == "table" then
            print("Received message: {type=" .. (message.type or "nil") .. ", doorId=" .. (message.doorId or "nil") .. "}")

            if message.type == "door_command" and message.doorId == doorId then
                print("Valid door command received for this door")
                operateDoor(message.action)
            else
                print("Ignoring message: not for this door or incorrect format")
            end
        else
            print("Ignoring non-table message")
        end
    end
end

setDoorId()
monitorAccess()