CC Minecraft - Advanced Monitor Check List

--[[

    Idea from SOLLY
    Created by LostboyDev
    7/18/22

    This is for advanced and advanced monitors only
    green button to add a task, red button to close

]]

local m = peripheral.find ("monitor")
local width, height = m.getSize()
local running = true

local addBtnPos = {x = 1, y = height}
local exitBtnPos = {x = width, y = height}
local tasks = {}
local tasksStartOffset = 3

function init()
    m.setBackgroundColor(colors.white)
    m.clear()
    m.setCursorPos(1, 1)
    load()
end

-- not finished
function load()
    if not fs.exists("tasks") then
        return
    end
    local file = fs.open("tasks", "r")
    local data = textutils.unserialise(file.readAll())
    tasks = data
    file.close()
end

function save()
    local file = fs.open("tasks", "w")
    local data = textutils.serialise(tasks)
    file.write(data)
    file.close()
end

function centeredText(str, y)
    local stringWidth = #str
    local newX = math.floor((width - stringWidth) / 2)
    m.setCursorPos(newX, y)
    m.write(str)
end

function drawPix(x, y, color)
    m.setCursorPos(x, y)
    m.setBackgroundColor(color)
    m.write(" ")
end

function draw()
    drawPix(addBtnPos.x, addBtnPos.y, colors.green)
    drawPix(exitBtnPos.x, exitBtnPos.y, colors.red)
    m.setTextColor(colors.black)
    m.setBackgroundColor(colors.white)
    centeredText("Todo List", 2)
    centeredText("LostboyDev", height)


    for k, v in pairs(tasks) do
        m.setTextColor(colors.cyan)
        centeredText("[" .. k .. "] " ..v, k + tasksStartOffset)
    end

end

function update()
    while running  do
        event, side, x, y = os.pullEvent("monitor_touch")
        if x == addBtnPos.x and  y == addBtnPos.y then
            term.setBackgroundColor(colors.white)
            term.clear()
            term.setCursorPos(1, 1)
            term.setTextColor(colors.red)
            term.write("Enter new Task: ")
            m.setBackgroundColor(colors.white)
            centeredText("Please Type Info In Computer", height/2)
            local input = read()
            table.insert(tasks, input)
            term.clear()
            term.setCursorPos(1, 1)
            m.setBackgroundColor(colors.white)
            m.setTextColor(colors.black)
            m.clear()
            save()
            draw()
        elseif x  == exitBtnPos.x and y == exitBtnPos.y then
            term.setBackgroundColor(colors.black )
            term.setTextColor(colors.white)
            term.clear()
            term.setCursorPos(1, 1)
            running = false
        else
            for k, v in pairs(tasks) do
                if y - tasksStartOffset == k then
                    table.remove(tasks,  k)
                    save()
                    init()
                    draw()
                end
            end
        end
    end
end

init()
draw()
update()