ocal wSide = "right" -- the side the RFID Writer is on
local writer = peripheral.wrap(wSide) -- wraps the RFID Writer to the writer variable
local cReady = false -- stores if an RFID card is present and not previously encoded
local info = {"Username: ", "Password: "} -- an array that stores prompts for the user
local str = "" -- variable used as a placeholder for formatting functions
local data = "" -- will store all of the data for the card
local label = "" -- will store the card label

function sData(str) -- formats a string with [] use substring search to get data between
return "[" .. str .. "]"
end

function sProgress(str) -- formats the progress 'bar'
local temp2 = math.floor(str * 100)
return "[" .. temp2 .. "%]"
end

function wProgress(str) -- displays the write progress 'bar'
print("Write in progress: " .. sProgress(str))
end

function checkCard() -- checks that the card is writtable
if writer.isPresent()== true then
if writer.isCoded() == false then
cReady = true
end
else
cReady = false
end
end

function getData() -- gets the information needed for the card
for i,v in ipairs(info) do -- this loop will gather the basic information by prompting the user
term.clear()
term.setCursorPos(1,1)
write(info[i])
local temp = read()
data = data .. sData(temp) -- appends the data together until we have a single line; you could append \n if line breaks were necessary
end
term.clear()
term.setCursorPos(1,1)
write("Card Label: ")
label = read() -- stores the
end

function writeData() -- writes the data to the card
checkCard()
if cReady == true then
getData()
writer.encode(data, label) -- this is the part where the card actually gets written
while writer.getProgress() > -1 do -- displays the write progress
term.clear()
term.setCursorPos(1,1)
wProgress(writer.getProgress())
sleep(3)
end
term.clear()
term.setCursorPos(1,1)
print("Process complete.")
else
print("No card inserted, or invalid card.")
end
end

writeData() -- showtime