AceOS 3.0

--[[AceyoOS 2.0 done by aceyo369]]--
--[[Inspired by Nitrogen Fingers]]--

--[[ Side functions ]]--

local w, h = term.getSize()
local select = 1
local nF = true

local function clear()
  term.clear()
  term.setCursorPos(1, 1)
end

local function printCentered(msg, ypos)
  term.setCursorPos(w/2 - #msg/2, ypos)
  term.write(msg)
end

local function printAcross(bar,ypos)
  for i = 1,  w-1 do
    term.setCursorPos(i, ypos)
    term.write(bar)
  end
end

local function printLeft(msg, ypos)
  term.setCursorPos(3, ypos)
  term.write(msg)
end

local function printBottom(msg)
  term.setCursorPos(w/2 - #msg/2, h - 1)
  term.write(msg)
end

local function printRight(msg)
  term.setCursorPos(w/2 - 3, h/2 + 1)
  term.write(msg)
end

local function printMiddle(msg, xpos)
  term.setCursorPos(xpos, h/2)
  term.write(msg)
end

local function printBotline()
  printAcross("-", h - 2)
end

--[[ Main Desktop ]]--

runningTime = os.time()

mm = "Ace_Desktop"

local title = mm

local pID = os.getComputerID()

local user = "Anon"

local function printHeader()
  print("AceyoOS 1.0")
  printCentered(title,1)
  term.setCursorPos(1,2)
  term.write("Time: "..textutils.formatTime(runningTime,false))
  term.setCursorPos(w - 20, 2)
  print("Desktop_User:"..user)
  term.setCursorPos(w - 5, 1)
  print("ID: "..pID)  term.setCursorPos(w - 20, 2)
  printAcross("-", 3)
  printBotline()
end

--[[Extra loading screen]]--

local function runningPercent()
  clear()
  printHeader()
  printCentered("Loading...", h/2)
  for i = 0, 100 do
	term.setCursorPos(1, h/2 + 1)
    term.clearLine()
    printCentered(i.."%", h/2 + 1)
	sleep(0.001)
  end
  term.setCursorPos(1, h/2 + 1)
  term.clearLine()
  printCentered("100%", h/2 + 1)
  sleep(0.5)
  clear()
  printHeader()
  printCentered("Loading Complete", h/2)
  sleep(2)
  clear()
end

--[[All Menus with inputs]]--

local function printMain()
  if select == 1 then
  printCentered("[".."Computer List".."]", 4)
  printBottom("**Locate Computer IDs**")
  else printCentered("Computer List", 4) end

  if select == 2 then
  printCentered("[".."Command".."]", 6)
  printBottom("**Command Wireless Computers**")
  else printCentered("Command", 6) end

  if select == 3 then
  printCentered("[".."Simple Math".."]", 8)
  printBottom("**Solve Mathematics here**")
  else printCentered("Simple Math", 8) end

  if select == 4 then
  printCentered("[".."Games".."]", 10)
  printBottom("**Play available games here**")
  else printCentered("Games", 10) end

  if select == 5 then
  printCentered("[".."Programs".."]", 12)
  printBottom("**Edit and Run Computer Programs**")
  else printCentered("Programs", 12) end

  if select == 6 then
  printCentered("[".."Options".."]", 14)
  printBottom("**Change Setting**")
  else printCentered("Options", 14) end

  if select == 7 then
  printCentered("[".."Exit".."]", 16)
  printBottom("**Terminate the AceyoOS 1.0**")
  else printCentered("Exit", 16) end
end

local function inputMain()
  event, key = os.pullEvent("key")
  if key == 200 and select > 1 then
    select = select - 1
  end
  if key == 208 and select < 7 then
    select = select + 1
  end
  if key == 28 and select == 1 then
    title = "Computer_List"
    changeState("Computer_List")
  end
  if key == 28 and select == 2 then
    title = "Command"
    changeState("Command")
  end
  if key == 28 and select == 3 then
    title = "Simple_Math"
    changeState("Simple_Math")
  end
  if key == 28 and select == 4 then
    title = "Games"
    changeState("Games")
  end
  if key == 28 and select == 5 then
    title = "Program_System"
	changeState("Programs")
  end
  if key == 28 and select == 6 then
    title = "Options"
	changeState("Options")
  end
  if key == 28 and select == 7 then
    clear()
    nF = false
  end
end

local function printList()
  printCentered("No recorded Computer", h/2)
  printCentered("Press backspace", h/2 + 2)
  printCentered("to return to main menu", h/2 + 3)
end

local function inputList()
  event, key = os.pullEvent("key")
  if key == keys.backspace then
    title = mm
    changeState("main")
  end
end

local function printCommand()
  rednet.open("bottom")
  printCentered("Select Computer ID: ", h/2)
  CompID = tonumber(read())
  clear()
  printHeader()
  printCentered("Command for computer: ", h/2)
  cmd = read()
  clear()
  printHeader()
end

local sendmsg = "Sending..."

local function inputCommand()
  term.setCursorPos(w/2 - #sendmsg/2, h/2)
  textutils.slowPrint(sendmsg)
  rednet.send(CompID, cmd)
  sleep(1)
  clear()
  printHeader()
  printCentered("Command Sent", h/2)
  sleep(1)
  rednet.close("bottom")
  title = mm
  changeState("main")
end

local function printGames()
  if select == 1 then
  printCentered("[".."Snake Game".."]", 7)
  printBottom("**Play a classical Snakes**")
  else  printCentered("Snake Game", 7) end

  if select == 2 then
  printCentered("[".."T3".."]", 9)
  printBottom("**Play TicTacToe**")
  else printCentered("T3", 9) end

  if select == 3 then
  printCentered("[".."Back to Main Menu".."]", 11)
  printBottom("**To Main Menu**")
  else printCentered("Back to Main Menu", 11) end
end

local function inputGames()
  event, key = os.pullEvent("key")
  if key == 200 and select > 1 then
    select = select - 1
  elseif key == 208 and select < 3 then
    select = select + 1
  elseif key == 28 and select == 1 then
    runningPercent()
    shell.run("worm")
    nF = false
  elseif key == 28 and select == 2 then
    runningPercent()
    shell.run("t3")
    nF = false
  elseif key == 28 and select == 3 then
    title = mm
    changeState("main")
  end
end

local function printMath()
  printCentered("Insert your first number: ", h/2)
  first = tonumber(read())
  clear()
  printHeader()
  printCentered("<+,-,*,/>", h/2 - 1)
  printCentered("Insert your sign: ", h/2)
  sign = read()
  clear()
  printHeader()
end

local function inputMath()
  printCentered("Insert your second number: ", h/2)
  second = tonumber(read())
  clear()
  printHeader()
  if sign == "+" then
  total = first + second
  elseif sign == "-" then
  total = first - second
  elseif sign == "*" then
  total = first * second
  elseif sign == "/" then
  total = first / second
  end
  printCentered("Solution: "..total, h/2)
  printCentered("Press any key to go to Main Menu", h/2 + 2)
  event, key = os.pullEvent()
  title = mm
  changeState("main")
end

local function printprog()
  if select == 1 then
    printCentered("[".."Run a program".."]", 5)
   	printBottom("**Program can be from computer or disk**")
  else printCentered("Run a program", 5) end
  if select == 2 then
    printCentered("[".."Edit a program".."]", 7)
   	printBottom("**Able to edit and create script**")
  else printCentered("Edit a program", 7) end
  if select == 3 then
    printCentered("[".."Create a program".."]", 9)
   	printBottom("**Make your own program**")
  else printCentered("Create a program", 9) end
  if select == 4 then
    printCentered("[".."Back to Main Menu".."]", 11)
   	printBottom("**To Main Menu**")
  else printCentered("Back to Main Menu", 11) end
end

local function inputprog()
  event, key = os.pullEvent("key")
  if key == 200 and select > 1 then
    select = select - 1
  elseif key == 208 and select < 4 then
    select = select + 1
  end
  if key == 28 and select == 1 then
    clear()
   	printHeader()
   	term.setCursorPos(1, h/2)
   	shell.run("dir")
   	sleep(3)
   	clear()
   	printHeader()
   	printCentered("Program to run: ", h/2)
   	prog = read()
    if fs.exists(prog) == true then
   	  changeState("main")
	  title = mm
	  clear()
	  shell.run(prog)
    else
      clear()
      printHeader()
      printCentered("No Such Program", h/2)
	  sleep(1)
      changeState("Programs")
    end
  elseif key == 28 and select == 2 then
    clear()
	printHeader()
	term.setCursorPos(1, h/2)
    shell.run("dir")
    sleep(3)
    clear()
    printHeader()
    printCentered("Which program to edit?", h/2)
    term.setCursorPos(w/2 - 6, h/2 + 1)
    prog = read()
    shell.run("edit",prog)
  elseif key == 28 and select == 3 then
    clear()
    printHeader()
	printCentered("Name of your program: ", h/2)
    term.setCursorPos(w/2 - 6, h/2 + 1)
    prog = read()
    shell.run("edit",prog)
  elseif key == 28 and select == 4 then
    title = mm
	changeState("main")
  end
end

local function printOp()
  if select == 1 then
    printCentered("[".."Refresh Time".."]", h/2 - 1)
	printBottom("**See Current Time**")
  else printCentered("Refresh Time", h/2 - 1) end
  if select == 2 then
    printCentered("[".."Password".."]", h/2 + 1)
	printBottom("**Password Setting**")
  else printCentered("Password", h/2 + 1) end
  if select == 3 then
    printCentered("[".."Back to Main Menu".."]", h/2 + 3)
	printBottom("**To Main Menu**")
  else printCentered("Back to Main Menu", h/2 + 3) end
end

local function inputOp()
  event, key = os.pullEvent("key")
  if key == 200 and select > 1 then
    select = select - 1
  elseif key == 208 and select < 3 then
    select = select + 1
  elseif key == 28 and select == 1 then
    os.reboot()
  elseif key == 28 and select == 2 then
    title = "Password_Setting"
    changeState("Password")
  elseif key == 28 and select == 3 then
    title = mm
	changeState("main")
  end
end

local function printpwR()
  printCentered("Your Username: ", h/2 - 1)
  printCentered("Your Password: ", h/2)
end

local function inputpwR()
  term.setCursorPos(w/2 + 8, h/2 - 1)
  inputuser = read()
  term.setCursorPos(w/2 + 8, h/2)
  inputpw = read("*")
  if fs.exists("/user/"..inputuser) then
    clear()
	printHeader()
	printCentered("Account already exists", h/2)
	sleep(1.5)
  else
    fs.makeDir("/user/"..inputuser.."/"..inputpw)
    clear()
    printHeader()
    printCentered("Registration Complete", h/2)
    sleep(1)
    title = mm
    changeState("main")
  end
end

local function printpwL()
  printCentered("Your Username: ", h/2 - 1)
  printCentered("Your Password: ", h/2)
end

local function inputpwL()
  term.setCursorPos(w/2 + 8, h/2 - 1)
  inputuser = read()
  term.setCursorPos(w/2 + 8, h/2)
  inputpw = read("*")
  if fs.exists("/user/"..inputuser.."/"..inputpw) == true then
    user = inputuser
	clear()
	printHeader()
	printCentered("Welcome back, "..user.."!", h/2)
	sleep(1.5)
  else
    clear()
    printHeader()
    printCentered("Wrong Username or Password!", h/2)
	sleep(2)
  end
  clear()
  printHeader()
  title = mm
  changeState("main")
end

local function printpw()
  if select == 1 then
    printCentered("[".."Create Account".."]", h/2 - 1)
	printBottom("**New Account on Desktop**")
  else printCentered("Create Account", h/2 - 1) end
  if select == 2 then
    printCentered("[".."Login Account".."]", h/2 + 1)
	printBottom("**Access Available Account**")
  else printCentered("Login Account", h/2 + 1) end
  if select == 3 then
    printCentered("[".."Back to Main Menu".."]", h/2 + 3)
	printBottom("**To Main Menu**")
  else printCentered("Back to Main Menu", h/2 + 3) end
end

local function inputpw()
  event, key = os.pullEvent("key")
  if key == 200 and select > 1 then
    select = select - 1
  elseif key == 208 and select < 3 then
    select = select + 1
  elseif key == 28 and select == 1 then
    title = "Account Registration"
	changeState("Register")
  elseif key == 28 and select == 2 then
    changeState("Login")
  elseif key == 28 and select == 3 then
    title = mm
	changeState("main")
  end
end

--[[Menu Tables]]--


local state = {
  ["main"] = {
    printfunc = printMain,
    inputfunc = inputMain
  },
  ["Computer_List"] = {
    printfunc = printList,
    inputfunc = inputList
  },
  ["Command"] = {
    printfunc = printCommand,
    inputfunc = inputCommand
  },
  ["Simple_Math"] = {
    printfunc = printMath,
    inputfunc = inputMath
  },
  ["Games"] = {
    printfunc = printGames,
    inputfunc = inputGames
  },
  ["Programs"] = {
    printfunc = printprog,
	inputfunc = inputprog
  },
  ["Options"] = {
    printfunc = printOp,
	inputfunc = inputOp
  },
  ["Password"] = {
    printfunc = printpw,
	inputfunc = inputpw
  },
  ["Register"] = {
    printfunc = printpwR,
	inputfunc = inputpwR
  },
  ["Login"] = {
    printfunc = printpwL,
	inputfunc = inputpwL
  }
}

--[[For Changing Menus]]--

local menustate = state["main"]

function changeState(newstate)
  menustate = state[newstate]
  select = 1
end

local function Update()
    runningTime = os.time()
    printHeader()
end

--[[Overall compiled functions]]--

local function Main()
    os.startTimer(0.1)
    local event = os.pullEvent()
    if event == "timer" then
        clear()
	Update()
    	menustate.printfunc()
    	menustate.inputfunc()
    else
	runningTime = os.time()
    end
end


--[[Looping the main function]]--

while nF do
  if term.isColor() then
  	term.setBackgroundColour(colours.blue)
  	term.setTextColour(colours.white)
  end
  Main()
end