Installer/Updater

--Quartz OS Installer/Updater

print("\nWould you like to update this program to allow for new files from the most recent update?\n\nChoose no if this has been updated just a moment ago.\n\nChoose yes if this is a new install. [Y/N]")

while true do
    evt, key, held = os.pullEvent("key")
    if key == 21 then
        fs.delete("/system/updater.lua")
        shell.run("pastebin get iUuXr9je /system/updater.lua")
        print("\nIf this is a new install, please now run '/system/updater.lua' and choose no at the next prompt.\n\nIf not please now run 'qupdate'")
        continue = false
        break
    elseif key == 49 then
        continue = true
        break
    end
end

pastes = {"J9n73fsB", "H3erkhRc", "JS7FsH1F", "CJjXEKWx", "0YXPahu4"}
locations = {"/startup.lua", "/system/drivers/audio.lua", "/system/drivers/display.lua", "/system/audioalerts.lua", "/system/compatibility/compat.lua"}
names = {"Startup", "Audio Driver", "Display Driver", "Audio Alert Library", "Compatibility Layer"}
optional = {false, false, false, false, false}

function install(id, check, updating)
    if check and fs.exists(locations[id]) then
        fs.delete(locations[id])
        update = true
    elseif updating then
        update = true
    else
        update = false
    end

    shell.run("pastebin get "..pastes[id].." "..locations[id])

    if update then
        print("Updated "..names[id])
    else
        print("Installed "..names[id])
    end
    print()
end

function ask(id)
    if fs.exists(locations[id]) then
        fs.delete(locations[id])
        install(id, false, true)
        return
    end

    print()
    print("Would you like to install "..names[id].."? [Y/N]")
    while true do
        evt, key, held = os.pullEvent("key")
        if key == 21 then
            install(id, false, false)
            return
        elseif key == 49 then
            return
        end
    end
end

if continue then
    for id = 1,#pastes do
        if not optional[id] then
            install(id, true, false)
        else
            ask(id)
        end
    end
    print("IT IS RECOMMENDED YOU NOW REBOOT!")
end