Display

slc = 0
x, y = term.getSize()

function display()
  clear()
  if slc == 0 then
    header()
    intro()
  elseif slc == 1 then
    test()
  elseif slc == 2 then
    debug()
  end
end

function header()
  clear()
  print("=======================================")
  term.write("|            ")
  term.setTextColor(colors.lightBlue)
  term.write(" SortBob 1.0  ")
  term.setTextColor(colors.yellow)
  term.write("   ["..time().."]")
  term.setTextColor(colors.white)
  term.write(" | ")
  print("=======================================")
  print(" ")
end

-------------Programs------------------

function intro()
  header()
  print(format("Please select a program: "))
  print(format("setLayout"))
  print(format("checkChest"))
  print(format("debug"))
  input()
end

function test()
  clear()
  print("test")
  input()
end

function debug()
  header()
  print("Dimensions: width = "..x..", height = "..y)
  input()
end

-----------Functions---------------

function input()
  print("")
  term.write("Input: ")
  selection(read())
end

function selection(input)
  if input == "" then
      clear()
      print("Display closed")
      error()
  end
  if input == "home" then
    slc = 0
  end
  if slc == 0 then
    if  input == "set Layout" then
      slc = 1
    elseif input == "debug" then
      slc = 2
    end
  end
end

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

function format(str)
  length = string.len(str)
  spaces = math.floor((x - length)/2)
  for i = 1,spaces do
    str = " "..str.." "
  end
  if string.len(str) < x then
    str = str.." "
  end
  return str
end

function time()
  local time = os.time()
  h = math.floor(time)
  m = math.floor((time-h)*100)
  if h < 10 then
    h = "0"..h
  end
  if m < 10 then
    m = "0"..m
  end
  return (h..":"..m)
end
-------------Main--------------
while true do
  display()
end