Calculator

shell.run("bg")
term.clear()
--button.clearTable()
shell.run("monitor","monitor_0","clear")
term.clear()
os.loadAPI("button")
term.setCursorPos(1,1)
m = peripheral.wrap("monitor_0")
m.clear()
num1 = -1
num2 = -1
misc = " "

function fillTable()
  button.setTable("1",one,1,3,1,3)
  button.setTable("2",two,5,7,1,3)
  button.setTable("3",three,9,11,1,3)
  button.setTable("4",four,1,3,5,7)
  button.setTable("5",five,5,7,5,7)
  button.setTable("6",six,9,11,5,7)
  button.setTable("7",seven,1,3,9,11)
  button.setTable("8",eight,5,7,9,11)
  button.setTable("9",nine,9,11,9,11)
  button.setTable("0",zero,13,15,9,11)
  button.setTable("/",divide,13,15,1,3)
  button.setTable("*",multiply,13,15,5,7)
  button.setTable("+",add,17,19,1,3)
  button.setTable("-",subtract,17,19,5,7)
  button.setTable("=",calc,17,19,9,11)
  button.setTable("^",power,21,23,5,7)
  button.setTable("Cl",clear,21,23,1,3)
  button.screen()
end

function getClick()
  event,side,x,y = os.pullEvent("monitor_touch")
  button.checkxy(x,y)
end

function one()
  button.flash("1")
  if misc == " " then
    if num1 == -1 then
      num1 = 1
    else
      num1 = num1 * 10
      sleep(0.1)
      num1 = num1 + 1
    end
  else
    if num2 == -1 then
      num2 = 1
    else
      num2 = num2 * 10
      sleep(0.1)
      num2 = num2 + 1
    end
  end
end

function two()
  button.flash("2")
  if misc == " " then
    if num1 == -1 then
      num1 = 2
    else
      num1 = num1 * 10
      sleep(0.1)
      num1 = num1 + 2
    end
  else
    if num2 == -1 then
      num2 = 2
    else
      num2 = num2 * 10
      sleep(0.1)
      num2 = num2 + 2
    end
  end
end

function three()
  button.flash("3")
  if misc == " " then
    if num1 == -1 then
      num1 = 3
    else
    num1 = num1 * 10
    sleep(0.1)
    num1 = num1 + 3
    end
  else
    if num2 == -1 then
      num2 = 3
    else
      num2 = num2 * 10
      sleep(0.1)
      num2 = num2 + 3
    end
  end
end

function four()
  button.flash("4")
  if misc == " " then
    if num1 == -1 then
      num1 = 4
    else
    num1 = num1 * 10
    sleep(0.1)
    num1 = num1 + 4
    end
  else
    if num2 == -1 then
      num2 = 4
    else
      num2 = num2 * 10
      sleep(0.1)
      num2 = num2 + 4
    end
  end
end

function five()
  button.flash("5")
  if misc == " " then
    if num1 == -1 then
      num1 = 5
    else
    num1 = num1 * 10
    sleep(0.1)
    num1 = num1 + 5
    end
  else
    if num2 == -1 then
      num2 = 5
    else
      num2 = num2 * 10
      sleep(0.1)
      num2 = num2 + 5
    end
  end
end

function six()
  button.flash("6")
  if misc == " " then
    if num1 == -1 then
      num1 = 6
    else
    num1 = num1 * 10
    sleep(0.1)
    num1 = num1 + 6
    end
  else
    if num2 == -1 then
      num2 = 6
    else
      num2 = num2 * 10
      sleep(0.1)
      num2 = num2 + 6
    end
  end
end

function seven()
  button.flash("7")
  if misc == " " then
    if num1 == -1 then
      num1 = 7
    else
    num1 = num1 * 10
    sleep(0.1)
    num1 = num1 + 7
    end
  else
    if num2 == -1 then
      num2 = 7
    else
      num2 = num2 * 10
      sleep(0.1)
      num2 = num2 + 7
    end
  end
end

function eight()
  button.flash("8")
  if misc == " " then
    if num1 == -1 then
      num1 = 8
    else
    num1 = num1 * 10
    sleep(0.1)
    num1 = num1 + 8
    end
  else
    if num2 == -1 then
      num2 = 8
    else
      num2 = num2 * 10
      sleep(0.1)
      num2 = num2 + 8
    end
  end
end

function nine()
  button.flash("9")
  if misc == " " then
    if num1 == -1 then
      num1 = 9
    else
    num1 = num1 * 10
    sleep(0.1)
    num1 = num1 + 9
    end
  else
    if num2 == -1 then
      num2 = 9
    else
      num2 = num2 * 10
      sleep(0.1)
      num2 = num2 + 9
    end
  end
end

function zero()
  button.flash("0")
  if misc == " " then
    if num1 == -1 then
      num1 = 0
    else
    num1 = num1 * 10
    sleep(0.1)
    num1 = num1 + 0
    end
  else
    if num2 == -1 then
      num2 = 0
    else
      num2 = num2 * 10
      sleep(0.1)
      num2 = num2 + 0
    end
  end
end



function add()
  if misc == " " then
    button.toggleButton("+")
    misc = "+"
  elseif misc == "+" then
    button.toggleButton("+")
    misc = " "
  else
    button.toggleButton("+")
    button.toggleButton(misc)
    misc = "+"
  end
end

function subtract()
  if misc == " " then
    button.toggleButton("-")
    misc = "-"
  elseif misc == "-" then
    button.toggleButton("-")
    misc = " "
  else
    button.toggleButton("-")
    button.toggleButton(misc)
    misc = "-"
  end
end

function divide()
  if misc == " " then
    button.toggleButton("/")
    misc = "/"
  elseif misc == "/" then
    button.toggleButton("/")
    misc = " "
  else
    button.toggleButton("/")
    button.toggleButton(misc)
    misc = "/"
  end
end

function multiply()
  if misc == " " then
    button.toggleButton("*")
    misc = "*"
  elseif misc == "*" then
    button.toggleButton("*")
    misc = " "
  else
    button.toggleButton("*")
    button.toggleButton(misc)
    misc = "*"
  end
end

function power()
  if misc == " " then
    button.toggleButton("^")
    misc = "^"
  elseif misc == "^" then
    button.toggleButton("^")
    misc = " "
  else
    button.toggleButton("^")
    button.toggleButton(misc)
    misc = "^"
  end
end


function calc()
  button.toggleButton("=")
  if num2 == -1 then
    print("Invalid.")
  else
    if misc == "/" then
      ans = math.abs(num1/num2)
    elseif misc == "*" then
      ans = math.abs(num1*num2)
    elseif misc == "+" then
      ans = math.abs(num1+num2)
    elseif misc == "-" then
      ans = math.abs(num1-num2)
    else
      ans = math.abs(num1^num2)
    end
  end
sleep(0.5)
end

function clear()
  shell.run("reboot")
end


fillTable()
button.heading("")
button.label(1,1,"")
ans = " "
--m.setCursorPos(24,1)

while true do
  getClick()
  term.clear()
  term.setCursorPos(1,1)
  print(num1)
  print(misc)
  print(num2)
  print("=")
  print(ans)
  m.setCursorPos(25,1)
  m.write(num1)
  m.setCursorPos(25,3)
  m.write(misc)
  m.setCursorPos(25,5)
  m.write(num2)
  m.setCursorPos(25,7)
  m.write("=")
  m.setCursorPos(25,9)
  m.write(ans)
end