ui

function center(y,str)
  local w,h = term.getSize()
  local x = (w/2) - (#str/2)
  term.setCursorPos(x,y)
  print(str)
end

function render()
term.setBackgroundColor(colors.white)
term.clear()
term.setCursorPos(1,1)
paintutils.drawLine(1,1,51,1,colors.lightGray)
term.setCursorPos(1,1)
term.setTextColor(colors.white)
center(1,"Venatus reLIVE")
term.setBackgroundColor(colors.white)
term.setTextColor(colors.black)
end

function renderstart()
render()
center(3,"Please select what you want to do.")
center(4,"Press the button on your keyboard to continue.")
center(6,"[L] Login")
center(7,"[C] Create")
center(8,"[E] Exit")
end

function renderlogin()
  render()
  center(3,"Please input the following information.")
end

renderstart()

local bRunning = true

while bRunning do
  local e,key = os.pullEvent("key")
  if key == keys.l then
    renderlogin()
    term.setCursorPos(2,5)
    write("Username: ")
    local username = read()
    term.setCursorPos(2,6)
    write("Password: ")
    local password = read("*")
    local auth = shell.run("auth "..username.." "..password)
    if auth == true then
      render()
      center(5,"Login successful.")
      center(6,"Welcome back, "..username..".")
      sleep(3)
      local bRunning = false
      _G.session = {active = true, user = username, pass = password}
      return
    elseif auth == false then
      render()
      center(5,"Login error.")
      center(6,"Either username/password is wrong or server is down.")
      sleep(3)
      local bRunning = false
      return
    end
  elseif key == keys.c then
    render()
    center(2,"Input the following information.")
    term.setCursorPos(2,4)
    write("Username: ")
    local username = read()
    term.setCursorPos(2,5)
    write("Password: ")
    local password = read("*")
    local new = shell.run("newuser "..username.." "..password)
    if new == true then
      render()
      center(5,"The account '"..username.."' has been created.")
      center(6,"We hope you enjoy Venatus reLIVE.")
      sleep(3)
      local bRunning = false
      _G.session = {active = true, user = username, pass = password}
      return
    elseif new == "test" then
      render()
      center(5,"There was an error processing your request.")
      center(6,"Either a user already exists with that name or the")
      center(7,"server is offline.")
      sleep(3)
      local bRunning = false
      return
    end
  elseif key == keys.e then
    local bRunning = false
    return
  end
end