--settings
Compid = os.computerID()
Label = os.getComputerLabel()
LoginServ = 1337
rednet.open("right")
rednet.open("left")
rednet.open("front")
rednet.open("back")
rednet.open("top")
rednet.open("bottom")
ready = 0


--functions
local function Login()
shell.run("clear")
term.setCursorPos(15,9)
write ("Username: ")
UserIn = read()
term.clear()
term.setCursorPos(15,9)
write ("Password: ")
PassIn = read()

ping = rednet.send(LoginServ, "Ping")
if ping == false then
term.setCursorPos(15,9)
write ("Error 32: Login Servers Can Not Be Reached")
term.setCursorPos(15,10)
write ("Please Report this error to your local Administrator")
sleep(2)
elseif ping == true then
i = 0

while ready == 0 do
i = i + 1
if i == 5 then
print("Login Servers Busy, Try Again")
sleep(3)
os.reboot()
rednet.send(LoginServ, "Waiting")
id, msg = rednet.recieve(0.1)
if msg == "ready" then
ready = 1
end
end

rednet.send(LoginServ, UserIn)  -- Sends username to Login Server
rednet.send(LoginServ, PassIn)  -- Sends Password to login server to compare
id, msg = rednet.receive(2)

if msg == "Invalid" then
term.clear()
term.setCursorPos(15,9)
write ("Access Denied")
term.setCursorPos(15,10)
write ("Username and Password do not match")
sleep(3)
os.shutdown()

elseif msg == "Correct" then
rednet.send(LoginServ, Label) -- Sends the Comp label to login server to check if user has clearance
id, msg = rednet.receive(2)

elseif msg == "Denied" then
term.clear()
term.setCursorPos(15,9)
write ("You do not have access to this terminal")
sleep(3)
os.shutdown()
elseif msg == "Granted" then
rednet.send(LoginServ, "IsFirst")
id, msg = rednet.receive(2)
if msg == "yes" then
term.setCursorPos(15,9)
write ("This is your first time logining in.")
term.setCursorPos(15,10)
write ("Please Enter Your New Password")
term.setCursorPos(15,11)
write ("Password: ")
NewPass = read()
rednet.send(LoginServ, NewPass)
shell.run("clear")
term.setCursorPos(15,9)
write ("Your Password has been changed to: ", NewPass)
sleep(1)
rednet.send(LoginServ, "EndLogin")
Desktop()
elseif msg == "no" then
rednet.send(LoginServ, "EndLogin")
Desktop()
end


end
end
end
end

local function Desktop()
while true do
local time = os.time()
time = textutils.formatTime(time, false)
term.clear()
shell.run("clear")
print("Logged In As: ", Username, "                ComputerID: ", Compid)
term.setCursorPos(1,5)
print("                            _____ __  ")
print("     /\                    | ____/_ | ")
print("    /  \   _ __ ___  __ _  | |__  | | ")
print("   / /\ \ | '__/ _ \/ _` | |___ \ | | ")
print("  / ____ \| | |  __/ (_| |  ___) || | ")
print(" /_/    \_\_|  \___|\__,_| |____/ |_| ")
term.setCursorPos(1,17)
term.write("|=====|------------------------------------------|")
print("|SHIFT|                                 |", time ,"|")
term.setCursorPos(1,19)
term.write("|=====|------------------------------------------|")
event, id = os.pullEvent()
if event == "key" and id == "25" then
Menu()
end
if event == "key" and id == "42" then
event, id = os.pullEvent()
if event == "char" and id == "l" then
Logout()
else end
end
end
end

local function Logout()
shell.run("clear")
print("Logout")
sleep(2)
end

local function Menu()
shell.run("clear")
print("menu function")
sleep(2)
end



--program
while true do
Login()
end