Computercraft Keycard Reader System V1 [Part 2 - Validator]

--[[ Info

Requires an advanced computer to run

This program is designed as the validator for my keycard reader system. Since this computer SHOULDN'T have any openly accessible
floppy disk drives connected to it, this program should be safe from hijacking attempts. This is the program that can be used
to unlock doors, access a disk drive server, dispense stuff, etc.

IMPORTANT: I put delays in the program to keep this program synced to my card reader program. If you plan on using a custom reader,
feel free to remove them. Otherwise, keep them in.

]]--
os.pullEvent = os.pullEventRaw
term.clear()
term.setCursorPos(1,1)
term.setTextColor(colors.orange)
print("Keycard Validation System V1")
sleep(0.5)
print("Please Wait...")
-- Change to the side the reader will be connected to
rednet.open("right")
term.setTextColor(colors.green)
print("Rednet Communications Opened!")
sleep(1)

-- Main Program (loops indefinitely)
while true do
    term.clear()
    term.setCursorPos(1,1)
    term.setTextColor(colors.orange)
    -- You can change the text to say whatever
    print("Keycard Validation System")
    print("Waiting for keycard data...")
    id,IDdata = rednet.receive()
    term.setTextColor(colors.blue)
    print("Data Received...")
        -- ID checker - Checks ID number received from the card reader
        -- Change ### to ID number for the maintenance mode disk
        if IDdata == ### then
            term.setTextColor(colors.orange)
            print("Maintenance Card Detected!")
            sleep(1)
            rednet.broadcast("Break")
            print("Exiting to Terminal...")
            sleep(2)
            break;
        -- Add elseif statements for each ID you want validated (change the ### to the ID number of the disk)
        -- Copy this elseif statment to add more valid IDs
        elseif IDdata == ### then
            -- Delay is here for communications. Removing it may cause desync between systems
            term.setTextColor(colors.green)
            print("User Authorized!")
            name = "name goes here"
            valid = 1
            sleep(1)
            rednet.broadcast("Granted")
        else
            term.setTextColor(colors.red)
            -- Delay is here for communications. Removing it may cause desync between systems.
            sleep(1)
            rednet.broadcast("Denied")
            print("Invalid ID Detected!")
            print("Access Denied!")
            sleep(3)
            os.reboot()
        end
    -- If the ID was validated this will run
    if valid == 1 then
        term.setTextColor(colors.blue)
        print("Awaiting a response from the reader...")
        id,data = rednet.receive()
        if data == "resume" then
            rednet.broadcast(name)
            sleep(2)
            print("Response Received")
            -- Insert desired behavior here (e.g. break to terminal, unlock a door, or whatever)
            -- Demo Behavior, remove when editing
            rs.setOutput("left", true)
            sleep(2)
            rs.setOutput("left", false)
        else
            term.setTextColor(colors.red)
            print("Invalid Response")
            sleep(3)
        end
    end
end