TODO List New and Improved | Advance Monitors Computercraft

-- Define the size and position of the monitor window
local monitor = peripheral.wrap("top")
local width, height = monitor.getSize()
local x, y = 1, 1

-- Define the todo list data structure
local todoList = {}

-- Define the maximum number of items to display on one page
local maxItemsPerPage = height - 2  -- accounting for borders and prompt

-- Define the background and text colors
local bgColor = colors.lightGray
local textColor = colors.white

-- Define the colors for the "+" button
local addButtonBgColor = colors.green
local addButtonTextColor = bgColor

-- Define a function to draw the todo list on the monitor
local function drawTodoList(page)
  -- Clear the monitor
  monitor.setBackgroundColor(bgColor)
  monitor.clear()
  monitor.setCursorPos(1,1)

  -- Draw the todo list items for the current page
  local startIndex = (page - 1) * maxItemsPerPage + 1
  local endIndex = math.min(page * maxItemsPerPage, #todoList)
  for i = startIndex, endIndex do
    local listItem = todoList[i]
    monitor.write("- " .. listItem)
    monitor.setCursorPos(1, monitor.getCursorY() + 1)
  end

  -- Draw the "+" button at the bottom of the screen
  monitor.setCursorPos(width - 1, height)
  monitor.setBackgroundColor(addButtonBgColor)
  monitor.setTextColor(addButtonTextColor)
  monitor.write("+")
end

-- Define a function to handle user input (clicks on the monitor)
local function handleInput()
  -- Define the current page at the beginning of the function
  local page = 1

  while true do
    -- Wait for a user input event
    local event, player, x, y = os.pullEvent("monitor_touch")

    -- Check if the "+" button was clicked
    if x == width and y == height then
      -- Prompt the user to enter a task, and add it to the todo list if entered
      term.clear()
      term.setCursorPos(1, 1)
      term.setTextColor(textColor)
      term.write("Enter a new task: ")
      local task = io.read()
      if task ~= "" then
        table.insert(todoList, task)
      end

      -- Redraw the todo list on the monitor
      drawTodoList(1)
    else
      -- Check if a todo list item was clicked, and remove it if so
      local itemIndex = y + maxItemsPerPage * (page - 1)
      if itemIndex <= #todoList then
        table.remove(todoList, itemIndex)
        drawTodoList(page)
      end
    end
  end
end

-- Start the program by drawing the initial todo list and handling user input
drawTodoList(1)
handleInput()