AutoUpdate

local newfiles = {"Wj6Ftupr"}
local color = colors.red

function writeCentered (dy, s, device)
    local w,h = device.getSize()
    local x = math.floor((w - string.len(s)) / 2)
    local y = math.floor(h/2) + dy
    device.setCursorPos(x,y)
    device.clearLine()
    device.write(s)
end

function drawLineCentered (dy, width, device)
    local w,h = device.getSize()
    local x = math.floor((w - width) / 2)
    local y = math.floor(h/2) + dy
    local str = ""
    for i = 1,width do
        str = str.." "
    end
    device.setCursorPos(x,y)
    device.clearLine()
    device.write(str)
end

function drawProgressBar (dy, widthfilled,widthempty,colorfull,colorempty,device)

    local w,h = device.getSize()
    local x = math.floor((w-(widthfilled+widthempty)) / 2)
    local y = math.floor(h/2) + dy
    local strfilled = ""
    for i = 1,widthfilled do
        strfilled = strfilled.." "
    end
    local strempty = ""
    for i = 1,widthempty do
        strempty = strempty.." "
    end
    device.setCursorPos(x,y)
    device.clearLine()
    device.setBackgroundColor(colorfull)
    device.write(strfilled)
    device.setBackgroundColor(colorempty)
    device.write(strempty)
    device.setBackgroundColor(colors.black)

end

function updateProgressbar(progress,total,device)

    local width = 40
    local ratio = progress/total
    local filled = 40*ratio
    local empty = width-filled
    drawProgressBar(0, filled,empty,color,colors.gray,device)

end

local monitor = peripheral.find("monitor", function(name, object) return object.isColour() end)

monitor.setBackgroundColor(colors.black)
monitor.clear()
monitor.setTextColor(color)
writeCentered (-1, "-- Downloading Packages --" ,monitor)
monitor.setBackgroundColor(colors.black)

local total = table.getn(newfiles)

if fs.exists(_G.osfolder) then
    fs.delete(_G.osfolder)
end

updateProgressbar(0,total,monitor)
writeCentered (1, "0%", monitor)
sleep(1)

for i,file in ipairs(newfiles) do

    shell.run("pastebin get " .. file .. " " .. osfolder.."/"..file)
    updateProgressbar(i,total,monitor)
    writeCentered (1, math.floor(i*100/total).."%",monitor)
end