MensaDelPopolo

output = "top"
allowed = "bottom"
denied = "back"

local function searchUser(user)
    local userList = fs.open("users", "r")
    checkUser = string.find(userList.readAll(), user)
    userList.close()
    return checkUser
end

local function addUser(user)
    local userList = fs.open("users", "a")
  userList.writeLine(user)
  userList.close()
end

local function resetRedstone()
    rs.setOutput(output, false)
    rs.setOutput(allowed, false)
    rs.setOutput(denied, false)
end

local function resetList()
    if fs.exists("users") then
        fs.delete("users")
    end
    local userList = fs.open("users", "w")
    userList.writeLine("Kiiw")
    userList.writeLine("_Roovy")
    userList.writeLine("LoreSao99")
    userList.close()
end

os.setAlarm(0)
resetRedstone()
resetList()

while true do
    local event, user = os.pullEvent()
    if event == "player" then
        local checkUser = searchUser(user)
        if checkUser == nil or checkUser == "" then
            print("User " .. user .. " allowed")
            addUser(user)
            rs.setOutput(output, true)
            rs.setOutput(allowed, true)
      sleep(10)
      resetRedstone()
    else
        rs.setOutput(denied, true)
      sleep(1)
      resetRedstone()
        end
    elseif event == "alarm" then
        resetList()
    end
    sleep(1)
end