login

rednet.open("top")
mag = peripheral.wrap("right")
os.loadAPI("tables")
writer = peripheral.wrap("left")
serverID = 190


function getUser()
  term.clear()
  term.setCursorPos(1,1)
  term.write("Enter username: ")
  username = io.read()
end

function getPin()  --gets pin code
  term.clear()
  term.setCursorPos(1,1)
  term.write("Enter pin: ")
    pin = tonumber(read("*"))
end

function exists(user) -- checks if username exists
  rednet.send(serverID,"requestInfo")
  sleep(.5)
  id,msg,chan = rednet.send(serverID,user)
  id,msg,chan = rednet.receive(5)
  if msg == "nonexisting" then
    return false
  else
    accInfo = msg
    print(msg)
    return true
  end
end
function login() --logs you in
  getUser()
  if exists(username) then
    --accInfo = tables.load("accounts/"..username)
    for k,v in pairs(accInfo) do
      if k == "pin" then
        getPin()
        if pin == v then
          print("access granted")
          return true
        else
          print("access denied")
          sleep(1)
          return false
        end
      end
    end
  else
    print("account: "..username.." doesnt exist")
    return false
  end
end

repeat
until login() == true
--login complete, initiate task

--term.clear()
--term.setCursorPos(1,1)
--term.write("Press a button to choose action")
--term.setCursorPos(1,2)
--term.write("[1] = Print New RFID")
--term.setCursorPos(1,3)
--term.write("[2] = Make new Mag-stripe")

function writeRFID()
  if char == "1" then
    print(" making card")
    for k,v in pairs(accInfo) do
      if k == "Card number" then -- gets card number
        CardNumber = v
      end
    end

    if writer.isPresent() then
      print(writer.encode(tostring(CardNumber),tostring(username)))
      for i = 1,29 do
        term.clear()
        term.setCursorPos(1,1)
        term.write("Card Progress: ")
        prcnt = writer.getProgress()*100
        term.write(math.floor(prcnt).."%")
        sleep(1)
      end
        event,side = os.pullEvent("rfid_written")
        print("RFID card compelete!")
      return true
      else print("insert RFID card")
      return false
    end
    else print("error")
    return false
  end
end

function writeMag()
  if char == "2" then
    for k,v in pairs(accInfo) do
      if k == "Card number" then
        cardNumber = v
        print(cardNumber)
      end
    end
  end
  mag.beginWrite(tostring(cardNumber),"KeyCard")
  print("swipe card")
end
for k,v in pairs(accInfo) do
  if k == "Card number" then
    CN = v
  end
end
--rednet.send(190,CN)