startup

term.clear()
term.setCursorPos(1,1)
oldPull = os.pullEvent -- just incase you need
-- to pull events for custom things :>
os.pullEvent = os.pullEventRaw

env = {}
env.time = 3
env.side = "back"
env.messages = {}
env.messages.gotin = "Welcome back to Blitz HQ" -- lol
users = {"fisher","nukelar","User","NvQ"} -- it wont matter caps, it will lower case it when checking.
passwords = {"fishae","DeathByNuke9","Blitz1623","#CommunistsRule"}
masterpassword = "HappyAIDS69" --ok, its a randy thing ok?

function reset()
  term.setBackgroundColor(colors.white)
  term.setTextColor(colors.black)
  term.clear()
  term.setCursorPos(1,1)
end

while true do
reset()
size = {term.getSize()}
term.setBackgroundColor(colors.gray)
term.setCursorPos(3,3)
for i = 1,size[2]-4 do
  cpos = {term.getCursorPos()}
  for i = 1,size[1]-4 do
    term.write(" ")
  end
  term.setCursorPos(cpos[1],cpos[2]+1)
end

term.setBackgroundColor(colors.red)

title = " Blitz Bunker OS "
title1 = "                 "
function titlelen(y)
  term.setCursorPos((size[1]/2)-(#title/2),y)
end

titlelen(2)
print(title1)
titlelen(3)
print(title)
titlelen(4)
print(title1)
term.setCursorPos(4,6)
term.setBackgroundColor(colors.gray)
print("Input your Credentials to proceed.")
term.setCursorPos(4,8)
term.write("User: ")
local user = read()
term.setCursorPos(4,10)
term.write("Password: ")
local pass = read("*") --don't want any others getting this hence local

found = false

if pass == masterpassword then
  term.setCursorPos(4,12)
  print("Welcome back, "..user..". You look mighty spiffy today, might I also add, you have the mastercode! Don't tell anyone!")
  _G["cuser"] = user
  break
end

if not found then
for i = 1,#users do
  for i1 = 1,#passwords do
    if user:lower() == users[i]:lower() then
      if pass == passwords[i1] then
        found = true
        term.setCursorPos(4,12)
        print(env.messages.gotin)
        rs.setOutput(env.side, true)
        sleep(env.time)
        rs.setOutput(env.side,false)
      end
    end
  end
end
end
end
--print("Welcome to the computer, ".._G["cuser"]..", and have a nice day.")